Table of Content

10 January 2022, Volume 30 Issue 1

Previous Issue    Next Issue

Comprehensive Review

Visual analysis of research on medical protective clothing based on CiteSpace

LIU Xingchen, XIE Hong

2022, 30(1):  1-8.  DOI: 10.19398/j.att.202011009

Asbtract ( )   HTML ( )   PDF (6410KB) ( )  

Figures and Tables | References | Related Articles | Metrics

In order to understand the research progress of medical protective clothing, the spatio-temporal relationship, cooperative relationship, co-occurrence relationship and co-citation relationship of medical protective clothing were studied. By using bibliometrics and knowledge graph method as the research methods, and CiteSpace as the analysis tool, this paper conducted a visual analysis on 380 literatures published on the Web of Science from January 1, 2006 to October 30, 2020. It is found that the development of medical protective clothing on the timeline shows a spiral upward trend, presents local concentration in the spatial dimension, and loose cooperation in the dimension of cooperative relationship. Research on medical protective clothing is mainly carried out by colleges and universities. At present, no core academic society has been formed. In the dimension of co-occurrence relationship, it is found that studies are focused on medicine and materials science. The co-citation relationship reveals scholars and top journals with high influence in medical protective clothing. In terms of research hotspots, topics of risk, exposure and performance, etc. are research hotspots of high frequency, and the research topics will change constantly over time. Through analysis, it is predicted that topics that are likely to become research hotspots in the future are personal protective equipment, Covid-19, surface and physical activity.

Bibliometric analysis of literatures on textile and clothing footprint based on CiteSpace

FENG Xiang, WANG Xiaopeng, QIU Xiaoxiao, WANG Laili

2022, 30(1):  9-17.  DOI: 10.19398/j.att.20201100

Asbtract ( )   HTML ( )   PDF (6488KB) ( )  

Figures and Tables | References | Related Articles | Metrics

In order to study the current status and trends of literatures on textile and clothing footprints, this paper selected CNKI database and WEB OF SCIENCE database, and took journal articles on textile and clothing footprints between 2011 and 2020 as the data source. CiteSpace visual literature analysis tool was employed to analyze the keyword frequency, time zone view, cluster diagram, timeline view and burst terms, etc. of research on footprint in the field of textile and clothing. The results showed that: There were abundant studies on the accounting method, accounting data, case demonstration and other aspects of carbon footprint and water footprint, forming a relatively sound research network; research on chemical footprint started late and relevant studies are being further deepened and refined; Chinese literatures on textile and clothing footprints mainly focused on the accounting, assessment and application demonstration in the stage of industrial production; English literatures mainly focused on the perspectives of full life cycle and global industrial chain, quantifying and evaluating the carbon footprint and water footprint of textile and clothing. The relationship between the sustainable development of the industry, resource consumption and environmental pollution were also well investigated.

Research progress in the prediction of heat transfer properties of fabrics based on structural characteristics

LI Jinyu, YANG Yunchu, LIU Mingming

2022, 30(1):  18-25.  DOI: 10.19398/j.att.202104011

Asbtract ( )   HTML ( )   PDF (2027KB) ( )  

Figures and Tables | References | Related Articles | Metrics

In order to predict the heat transfer properties of fabrics accurately, design fabrics better, and improve the thermal comfort of fabrics, the prediction models of heat transfer properties related to the structural parameters and internal characteristics of fabrics are introduced from different modeling methods, including statistical model, artificial neural network model, mathematical theoretical model and finite element model, the characteristics and application scope of different kinds of prediction models are analyzed. The research status of heat transfer simulation of fabrics at home and abroad in recent years is reviewed. Besides, the heat transfer model and research progress of fabrics containing moisture and fabrics containing phase change materials are summarized. Based on the above literature analysis, it is pointed out that the heat transfer properties of fabrics can be enhanced by optimizing the structural characteristics of fabrics, and the development trend of studies on the prediction of heat transfer properties of fabrics is proposed, so as to provide a new idea for the research of thermal comfort of garments.

Research progress on preparation of alginate fiber and its application in textiles

LIU Xiulong, WANG Yunyi

2022, 30(1):  26-35.  DOI: 10.19398/j.att.202103041

Asbtract ( )   HTML ( )   PDF (1169KB) ( )  

References | Related Articles | Metrics

The preparation methods of alginate fiber include wet spinning, electrostatic spinning, microfluidic spinning and centrifugal spinning. Among them, alginate fiber prepared by wet spinning has poor mechanical properties, salt and detergent resistance and dyeing properties, which hinder its large-scale application in the field of textiles and garments. Through fiber modification and functional transformation, the properties of alginate fiber prepared by wet spinning can be improved, and its application scope in the field of textiles and garments can be expanded. From three aspects: alginate fiber preparation, property modification and development of functional alginate fiber for textiles, this paper compared differences among preparation methods of alginate fiber, and summed up modification methods of mechanical properties, salt and washing resistance and dyeing properties of alginate fiber for textiles, types of functional alginate fiber for textiles. Lastly, it was pointed out that the industrial application of the preparation methods and research findings of functional alginate fiber are the direction for future development.

Progress on the application of molecular biotechnology in the identification of sheep wool and cashmere

FEI Jing, CHEN Xiao, LIU Minhua, GE Cunqing, QIN Hao

2022, 30(1):  36-40.  DOI: 10.19398/j.att.202010012

Asbtract ( )   HTML ( )   PDF (1065KB) ( )  

Figures and Tables | References | Related Articles | Metrics

Similarity between cashmere and sheep wool in appearance, physical and chemical properties are two main reasons why traditional detection methods can't distinguish them objectively. To solve this problem fundamentally, starting from the most essential characteristics of life, researchers developed a new detection method for fibrokeratin of special animals and a detection method for the genetic material DNA in medullary cells. This review provides a systematic comparative analysis of several existing molecular biological detection methods, and focuses on the basic principle, development history, application scope and existing problems of these methods. Among them, DNA detection features a high sensitivity, but a limited applicable scope. While protein analysis is more stable, and easy to achieve qualitative detection of a variety of mixtures, but its sensitivity is not as good as that of DNA detection. In conclusion, molecular biological detection methods are a good supplement to traditional methods and can provide objective and consistent results within their scope of application.

Materials Engineering

Preparation and electrochemical properties of carbon nanofiber anode materials

ZHOU Rongxin, GE Yeqian

2022, 30(1):  41-46.  DOI: 10.19398/j.att.202011004

Asbtract ( )   HTML ( )   PDF (4306KB) ( )  

Figures and Tables | References | Related Articles | Metrics

In order to obtain carbon nanofiber anode materials with excellent performance and investigate the carbonization process of the materials, one-dimensional carbon nanofiber anode materials were prepared by means of electrospinning and high-temperature carbonization. The morphology, chemical composition, structure and electrochemical properties of the resulting carbon nanofibers were tested and analyzed, and the optimized pre-oxidation and carbonization conditions were obtained. The results indicate that the carbon nanofibers prepared under the pre-oxidation conditions of 250℃, 120 min, and the carbonization condition of 800℃, 120 min have better morphological characteristics and chemical properties. The average diameter is 190 nm. The carbon structure is more ordered, with a carbon content of 73.7%. By assembling a lithium-ion battery and testing the charging-discharging performance of the battery, we find that the specific discharge capacity reaches 568.4 mAh/g at a current density of 100 mA/g, and the capacity retention rate reaches 77.3% after 100 cycles.

Research on tensile performance of aluminized carbon fiber braided grid based on ABAQUS

LIU Zhan, LI Jing, PENG Zhen

2022, 30(1):  47-53.  DOI: 10.19398/j.att.202009032

Asbtract ( )   HTML ( )   PDF (2976KB) ( )  

Figures and Tables | References | Related Articles | Metrics

In order to investigate the mechanical behavior of aluminized carbon fiber plain braided grid under the condition of large deformation, the tensile properties of the grid sample were tested by electronic universal testing machine through the method of experiment combined with finite element simulation according to GB/T 1447-2005 Fiber-reinforced plastics composites-Determination of tensile properties. A unit cell model of the grid sample was established in Pro/E and imported into the finite element software ABAQUS for the subsequent tensile simulation. The validity of the simulation analysis was verified by the test data. The results show that the aluminized carbon fiber plain braided grid is highly nonlinear. The intersections of warp and weft yarns are prone to stress concentration and even destruction and failure. The experimental numerical curve exhibited an upward trend, which was consistent with the simulation numerical curve, and the difference is small. Thus, the feasibility of the simulation analysis of the grid model was verified, providing reference for the design and engineering application of aluminized carbon fiber braided grid.

Bending properties of epoxy foam-filled spacer fabric composite material

XIE Zhangting, ZHEN Liangang, ZHOU Jiade, ZHANG Fengxiang, XU Fujun

2022, 30(1):  54-60.  DOI: 10.19398/j.att.202101019

Asbtract ( )   HTML ( )   PDF (7569KB) ( )  

Figures and Tables | References | Related Articles | Metrics

In order to obtain a foam core composite material with light weight, high strength and good integrity, and examine the effect of foam filling on the bending properties of the composite material, a kind of foam core composite material was prepared by filling epoxy foam into the composite of glass fiber spacer fabric/epoxy resin, and the bending properties of the composite material before and after filling of foam were tested. The experimental results show that the bending stiffness of the foam core composite material is up to 14.92×10⁶N·mm², the warp-wise stiffness increases by 66.93%, and the weft-wise stiffness increases by 106.08%. It can thus be seen that the epoxy foam can significantly promote the bending performance of the material. In order to reveal the mechanism of epoxy foam in the bending properties of the composite material, and the bending failure modes of the material before and after filling of foam were analyzed through microscope images. The results show that the epoxy foam can not only transfer the load, but also play a synergistic supporting role with the column yarn, absorb load and energy through deformation and rupture. Therefore, the bending performance of the composite material is significantly improved.

Preparation of a composite material with woven fabric/thermal insulation coating sandwich structure and its infrared stealth performance

ZHAO Hongjie, ZHU Chengyan, JIN Xiaoke, WENG Xiaoxia, TIAN Wei

2022, 30(1):  61-69.  DOI: 10.19398/j.att.202101025

Asbtract ( )   HTML ( )   PDF (6664KB) ( )  

Figures and Tables | References | Related Articles | Metrics

In order to prepare an infrared stealth composite material, a low-emissivity woven fabric is used as the upper and lower layers, a thermal insulation coating is used as the middle layer, and a composite material with sandwich structure is obtained through hot pressing process. Among them, the low-emissivity woven fabric takes FDY polyester filament as the warp yarn, and silver-plated nylon filament as the weft yarn; the surface-modified SiO₂ aerogel is selected as the functional filler for the thermal insulation coating, and E51 epoxy resin is the film forming agent. The morphology and structure of the silver-plated fiber and SiO₂ aerogel particles, infrared emissivity of the woven fabric, thermal conductivity of thermal insulation coating film, infrared stealth performance of the composite material, etc. are tested and analyzed, and the optimal process conditions are determined. The results show that when the particle size of the SiO₂ aerogel is 15 μm and the mass fraction in the coating is 12%, the thermal insulation performance of the coating film is the best, the thermal conductivity is as low as 0.05835 W/(m·K), and the corresponding composite material has the best infrared stealth effect. Using the composite material to camouflage a heat source target and testing with a thermal infrared imager, it can be concluded that the differences between the surface of material and the surrounding environment in terms of image grayscale and infrared radiation temperature are the smallest.

Study on the swelling and weight loss of chitosan/gelatin/tea polyphenol composite film

YU Yangxiao, SONG Gongji, ZHANG Zifan, ZHAO Mingda, SUN Chunjie, SUN Jiaqi, XU Jianmei

2022, 30(1):  70-77.  DOI: 10.19398/j.att.202010007

Asbtract ( )   HTML ( )   PDF (2744KB) ( )  

Figures and Tables | References | Related Articles | Metrics

In order to obtain a composite film that is not easy to deform with environmental humidity, not easy to gain weight when absorbing water and lose weight when dissolved, we determined chitosan/gelatin/tea polyphenol composite films with 6 different ratios through a formula experiment, prepared them with tape casting method, and tested the water absorption, swelling performance and weight loss of the composite films. The result indicated that the prepared composite films had the lowest water absorption when the mass percentages of chitosan, gelatin, and tea polyphenols were 67.55%, 0%, 32.45%, respectively. At this moment, the swelling rate was close to 0% and the weight loss rate was low. When the proportions of the three components were 63.08%, 7.52%, and 29.40%, the swelling rate of the prepared composite film was 0%, but the water absorption rate was high. When the proportions of the three components were 50.00%, 0%, and 50.00%, the weight loss rate of the composite film prepared was the lowest, but the swelling rate was negative, indicating that the prepared composite film shrank in water. Therefore, the optimal ratio is 67.55% chitosan, 0% gelatin and 32.45% tea polyphenols. The experiment also shows that the introduction of tea polyphenols can significantly overcome the shortcomings of the chitosan/gelatin composite film, which is easy to swell and dissolve when exposed to water.

Preparation and properties of sandwich structure PVA/SiO₂/GO composite nanofiltration membrane

LIU Yang, WANG Chen, FENG Weizhong, JIA Ziqi

2022, 30(1):  78-89.  DOI: 10.19398/j.att.202005026

Asbtract ( )   HTML ( )   PDF (6742KB) ( )  

References | Related Articles | Metrics

In order to enhance the nanofiltration performance of graphene oxide(GO) nanofiltration membrane, a large area GO nanofiltration membrane was prepared by electrostatic spraying technology. Further, combined with electrospinning technology, a PVA/GO nanofiltration membrane with composite sandwich structure was designed and prepared, which greatly improved the structural stability of the nanofiltration membrane. To further improve the nanofiltration performance of PVA/GO nanofiltration membrane, hydrophilic nanoparticles silica(SiO₂) was intercalated into GO, which increased the interlayer spacing of the GO nanofiltration membrane. Finally, the nanofiltration performance, structural stability, reusability and adsorption performance of the PVA/SiO₂/GO nanofiltration membrane(PS@GS-NF) with composite sandwich structure were studied. The results show that the steady-state pure water permeability coefficient of PS@GS-NF can reach as high as 21.1 L/(m²·h·bar), and the retention rate of organic dyes can be maintained as high as 98%. The sandwich structure also ensures that the PS@GS-NF has high structural stability. In addition, PS@GS-NF has excellent reusability and adsorption properties for positively charged organic dye molecules, with the recovery rate of 92% for pure water permeability, and the adsorption rate of 96% for positively charged methylene blue organic dye molecules.

Textile Equipment

Optimization of the position of the flared mouth to converge fleece output by the combing machine

JIA Guoxin, REN Jiazhi, LI Jinjian

2022, 30(1):  90-95.  DOI: 10.19398/j.att.202006028

Asbtract ( )   HTML ( )   PDF (2022KB) ( )  

Figures and Tables | References | Related Articles | Metrics

In order to reduce the irregularity of combed cotton sliver, a quantitative distribution model of fleece output by detaching roller was studied, a mathematical model for the aggregation of combed fleece at the flared mouth and the CV value of the evenness of converged sliver was established, and the universal applicability of the model was proved. A Matlab program was developed for the model and applied to a certain model of combing machine. The calculation results show that the position of flared mouth has a great influence on the evenness of the sliver it converges. The farther the flared mouth is away from the output roller, the worse the evenness of the sliver. When the coordinates of the center of flared mouth are (15, 0), the evenness of the sliver CV reached a minimum of 0.341%. This research method can be applied to the convergence of fleece and sliver, for example, the convergence of fleece of combing machine.

Research on a method to improve the drawing speed of drawing frame

WANG Qing, YIN Junqing, ZHANG Zhouqiang

2022, 30(1):  96-100.  DOI: 10.19398/j.att.202009014

Asbtract ( )   HTML ( )   PDF (1493KB) ( )  

Figures and Tables | References | Related Articles | Metrics

The development of technology requires that the drawing frame should achieve high speed, but most domestic drawing frames can't meet this requirement, so a method to improve the drawing speed of drawing frame was studied in this paper. Firstly, a method was proposed to enhance the speed of drawing frame by increasing the diameter of front roller of the drafting mechanism. Then, through an analysis and calculation of the drawing performance of the drawing mechanism, the feasibility of this method and its influence degree on the drawing performance were verified. Finally, a modal analysis of the front roller was carried out by Ansys software, the first six natural frequencies of the front roller were acquired and compared with the working frequency of the front roller. The analysis results show that: the diameter of front roller of the drafting mechanism can increase from 35mm to 48mm, on the premise that the drafting effect was guaranteed. Taking a drawing speed of 600m/min as an example, with the original angular velocity, the speed can reach 823m/min, up 37.17%, after the diameter is increased. No matter the diameter of the front roller is 35mm or 48mm, there is no resonance in the front roller, that is, no fracture in the front roller.

Research on non-contact yarn state detection technology

ZHANG Yujuan, PENG Laihu, XU Yushan, YUAN Yanhong

2022, 30(1):  101-108.  DOI: 10.19398/j.att.202012020

Asbtract ( )   HTML ( )   PDF (3249KB) ( )  

Figures and Tables | References | Related Articles | Metrics

Given the fact that fluctuation of yarn tension, yarn breakage, yarn stoppage and other changes in yarn state in the mechanical production of knitting can affect the quality of fabric, the dynamic characteristics of yarn delivery are deeply analyzed, and a photoelectric sensing detection method based on infrared projection is proposed. An overall detection scheme for yarn state is presented. The hardware design and software development of the yarn state detector are discussed in detail. According to the characteristics of the photoelectric sensing signal, a two-way differential detection amplifier circuit is designed, and a hysteresis comparison circuit is adopted to realize the conversion from analog signal to digital signal. Through the statistical induction of pulse signals, the relationship between the yarn tension and the number of pulses is finally obtained. After that, the dynamic detection and real-time alarm of yarn state during the production and knitting of the knitting machine are realized. The test shows that the yarn state detection method based on photoelectric induction is feasible, and the designed yarn state detector works normally. As the yarn tension changes, the number of measured pulses also changes accordingly. There is a positive correlation between the two. The research results are of great significance for the research of non-contact detection of yarn tension.

Development of a new method for evaluating the drapability of fabrics

RYKLIN Dzmitry, TANG Xiaotong

2022, 30(1):  109-114.  DOI: 10.19398/j.att.202101015

Asbtract ( )   HTML ( )   PDF (4005KB) ( )  

Figures and Tables | References | Related Articles | Metrics

In order to establish a new method for evaluating the drapability of fabrics, a mathematical model describing the drapability of fabrics was developed, and a new index was presented to evaluate the drapability of fabrics. Six pieces of plain linen fabrics were selected. Based on the existing testing instrument for the drapability of fabrics, a 3D scanner was introduced to obtain the 3D images and data of draping fabrics and the data obtained were statistically processed to get evaluation results. The results show that the newly developed mathematical model can accurately describe the draping appearance of different linen fabrics. The test and data analysis of different plain linen fabrics confirm that the new method has higher accuracy. Compared with the umbrella method, this method can evaluate the draping morphologies of fabrics in a more effective way.

Integrated color blending control technology for the driving and detection of seamless underwear machine

SHI Weimin, PENG Laihu

2022, 30(1):  115-121.  DOI: 10.19398/j.att.202011021

Asbtract ( )   HTML ( )   PDF (2593KB) ( )  

Figures and Tables | References | Related Articles | Metrics

In view of the problems in the color blending and knitting process of the seamless underwear machine, such as the instability of actions like yarn addition, yarn cutting, and yarn change, due to the implementation of drive open-loop control and uncontrollable time delay, the color blending principle and drive control characteristic of underwear production are deeply analyzed. For the purpose of improving the control stability of color blending and knitting, a color blending control technology scheme that integrates the drive and fault detection of seamless underwear machine is proposed. According to the driving characteristics and characteristics of loop current, key hardware circuits and software programs are designed. The test results show that the proposed scheme is stable and reliable, with low power consumption, high working efficiency and effective judgment of fault information. So it can meet the color blending control requirements of seamless underwear machine.

Impact of the suction parameters of textile air compressor pretreatment on its energy consumption

LIU Qianqian, JIN Guiming, YAN Suqian, QIN Li

2022, 30(1):  122-128.  DOI: 10.19398/j.att.202104031

Asbtract ( )   HTML ( )   PDF (1530KB) ( )  

Figures and Tables | References | Related Articles | Metrics

To investigate the impact of the suction parameters of the centrifugal air compressor pretreatment on its overall energy consumption, according to the actual condition of the air compressor station in a textile factory, after the inlet air was processed by the combined air conditioning unit, an actual measurement analysis was performed on the energy consumption of the running centrifugal air compressor under different temperature and humidity environment and the energy consumption generated by the pretreatment unit corresponding to the cooling capacity. Through data analysis, it was found that: in view of the overall energy consumption of the air compressor and the pretreatment system, when the suction moisture content remained the same and the inlet temperature was reduced by about 8 ℃, the overall energy consumption was small; when the suction temperature remained unchanged, with a moisture content of about 15.0 g/kg, the overall energy consumption reached the minimum value. The results show that through controlling the suction parameters of the air compressor after pretreatment, the overall energy consumption of the air compressor and the pretreatment system can be effectively reduced.

Dyeing and Finishing & Chemical Engineering

Research on the characteristics of optically variable pigments and their multi-tone photochromic printing process

PAN Yuange, WANG Chenglong, JIN Shulan, LUO Jun, CEN Weiguo, ZHENG Jinhuan

2022, 30(1):  129-136.  DOI: 10.19398/j.att.202011019

Asbtract ( )   HTML ( )   PDF (2416KB) ( )  

Figures and Tables | References | Related Articles | Metrics

In view of the high price of optically variable pigments, lack of chromatogram, poor color fastness of printed fabrics, and stiff hand feel, etc., the basic characteristics of the optically variable pigments and the printing process of disperse dyes/optically variable pigments in the same slurry are studied systematically to broaden the chromatography of optically variable pigments, and a controllable multi-tone photochromic printed fabric is developed. The results show that the Mc-series optically variable pigments have an obvious discoloration effect, excellent sensitivity and fatigue resistance. The multi-tone photochromic printing process developed is: a mass fraction of the optically variable pigments of 6%, a proper quantity of disperse dyes, a ratio of the adhesives TF-321G to TF-3201 of 2:1, a mass fraction is 6%, a mass fraction of the thickener TF-321F of 1.2%, a baking temperature of 170℃, and a baking time of 4 min. With different color tones and dosages of the disperse dye, the chromatogram of printed fabrics has been expanded.

Research on construction and performance of integrated ink based on blue light curing

YAN Kai, LUO Xun, ZHANG Qiyang, WANG Chenglong, QIAO Luyang, ZHENG Jinhuan

2022, 30(1):  137-145.  DOI: 10.19398/j.att.202011022

Asbtract ( )   HTML ( )   PDF (5513KB) ( )  

Figures and Tables | References | Related Articles | Metrics

In order to improve the migration and aggregation of titanium dioxide and enhance its anchoring effect on coating ink, we prepared an integrated coating of polyurethane acrylate-based titanium dioxide (PU-TiO2) was made. The PU-TiO₂ integrated coating was made into a light-cured PU-TiO₂ integrated coating ink, and the light-cured PU-TiO₂integrated coating ink system and its properties were studied. Through UV spectrum analysis and analysis of photopolymerization properties, it is concluded that when the mass ratio between the initiator camphorquinone (CQ) and the co-initiator 4-ethyl dimethylaminobenzoate (EDB) is 6:4, and the mass fraction of the initiator system accounts for 1.5% of the ink system, the ink performance reaches the best; through an analysis of photopolymerization properties, rheological properties and film tensile properties, it can be seen that the integrated coating ink is a typical Newtonian fluid. When the mass ratio between the coating and the monomer is 4:6, the ink performance is the best. Compared with the light-cured ink prepared by unmodified titanium dioxide, the migration and aggregation of the integrated coating ink are significantly improved during the curing, and the tensile properties and dispersion stability of the film are also improved.

Study on the darkening dyeing process and mechanism of indigo denim

Yang Shuwei, Wang Rong, Fang Xiaoli, Yu Zhicheng

2022, 30(1):  146-150.  DOI: 10.19398/j.att.202101033

Asbtract ( )   HTML ( )   PDF (1307KB) ( )  

Figures and Tables | References | Related Articles | Metrics

In order to enhance the dyeing depth of indigo denim, reduce the dyeing process by increasing theK/S value of denim and realize energy conservation and emissions reduction, this paper studies the modification process and mechanism of the cationic modifier B, discusses the effect of the mass concentration of modifier B, modification temperature, modification time onK/S value, and tests the infrared spectrum and Zeta potential of the cotton fabrics before and after modification, and the dyeing fastness of the cotton fabric after dyeing. The results indicated that the cotton fabric treated with the cationic modifier B was dyed with indigo. Under the same dyeing condition, the dyeingK/S value increased from 10.90 to 20.13. The dyeing depth of the modified cotton fabric after padding twice can be equal to that of the unmodified cotton fabric after padding for 5 times, and the color fastness to soap washing, friction and sunlight were good. The optimized modification process parameters were as follows: 6 g/L modifier B, a modification temperature of 60℃, and a modification time of 20 min. The infrared spectrum showed that the modified cotton fabric had a quaternary ammonium group, and the Zeta potential showed that the surface Zeta potential of the modified cotton fabric changed from-22.1 mV to +8.70 mV.

Influence of household drum washing on the style of denim fabric

CHENG Yu, LIANG Huier

2022, 30(1):  151-156.  DOI: 10.19398/j.att.202011013

Asbtract ( )   HTML ( )   PDF (1565KB) ( )  

Figures and Tables | References | Related Articles | Metrics

With a view to explore the hand feel and style characteristics of denim fabrics under different washing times of PhahrOmeter fabric evaluation system, three blended denim fabric samples, 100% cotton, 100% Lyocell fiber, modal/cotton/linen were selected, and by simulating the household drum washing method during wearing, the samples were washed for 0 times, 10 times, 20 times and 30 times and the hand feel styles were tested. Using the gray correlation method, the relationship between hand feel factor and the hand feel values of fabrics was calculated and analyzed. The results show that the stiffness of fabric is the main factor affecting the performance trend of the hand style styles of the fabric. The softness and stiffness of fabric are inversely proportional. The test values of the softness of fabric decrease with the increase of washing times, while the smoothness of fabric shows an opposite trend. That is, the more the fabric is washed, the greater the test value, the softer the fabric. During the test, pure cotton denim with similar square meter mass and thickness is the closest to blended modal/cotton/linen fabrics in terms of style, and modal fiber can improve the hand feel and stiffness of denim fabrics.

Study on dyeing properties of knitted cotton fabric by natural dye Viola Philippica

WANG Linan, ZHANG Jun, FU Hongping, YU Zhicheng

2022, 30(1):  157-161.  DOI: 10.19398/j.att.202102001

Asbtract ( )   HTML ( )   PDF (1104KB) ( )  

Figures and Tables | References | Related Articles | Metrics

In this study, the Chinese herb viola philippica extract was selected as a natural dye to treat the knitted cotton fabric. The dyeing properties of the modified knitted cotton fabric, the dyeing methods and dyeing process parameters (dosage of ferrous sulfate, pH value, dyeing temperature and dyeing time) were optimized. The color fastness, UV resistance and antibacterial property of the dyed fabric were evaluated. The results showed that the one-bath mordant dyeing method was the best for the dyeing of knitted cotton fabric by the natural dye viola philippica. The optimal dyeing process was determined as follows: viola philippica 20 g/L, ferrous sulfate 2%(o.w.f), citric acid 0.5 g/L, a pH value of 6, 90℃ for 50 min. Under this condition, the color fastness to soap washing and friction of the dyed fabric reached level 3 or above. The color fastness to sunlight on cotton fabrics was better than most natural dyes and reached 3 level. The UPF value was still higher than 50 after 20 laundries. The antibacterial rates of the dyed fabric against Escherichia coli and Staphylococcus aureus were 77.03% and 73.88% respectively.

Research on surface modification and properties of filter material for flue gas purification

LIU Na, CHEN Xiangyun, ZHANG Yongfeng, Lü Wenjing, JIAO Zhiying

2022, 30(1):  162-168.  DOI: 10.19398/j.att.202104022

Asbtract ( )   HTML ( )   PDF (1168KB) ( )  

Figures and Tables | References | Related Articles | Metrics

In order to enhance the properties of filter material and meet the requirements of dust removal in coking plant, this study uses PTFE emulsion to modify the surface of basalt needle-punched filter material (X), the FMS needle-punched filter material (F), the basalt and FMS needle-punched filter material (XF). According to relevant standards, thermal properties, oxidation resistance and antistatic properties of the filter material before and after the modification are tested. The results show that three kinds of filter materials are all exothermic reactions before and after surface modification. The extrapolated initial temperatures of thermal decomposition before and after surface modification are about 350℃, the average temperature of coke oven flue gas is 230℃, all higher than the operating temperature, which meets the requirements for use. After oxidant treatment, the average loss rate of breaking strength of three filter materials is small after surface modification, indicating that the oxidation resistance has been improved. Before surface modification, the induction electrostatic level is A for X filter material, A for F filter material, C for XF filter material, and B for X filter material, F filter material, and XF filter material after surface modification.

Application effect of magnetic scale inhibitor and polycarboxylic acid scale inhibitor for the air-conditioning circulating water system of textile mills

SU Zhe, YAN Suqian, QIN Li, HU Qingfeng

2022, 30(1):  169-177.  DOI: 10.19398/j.att.202104049

Asbtract ( )   HTML ( )   PDF (3814KB) ( )  

Figures and Tables | References | Related Articles | Metrics

In view of the serious scaling in the air-conditioning circulating water system of textile mills, based on magnetic scale inhibition technology and dosing scale inhibitors, through analyzing scale samples, this paper finds that magnetization treatment can reduce deposition of calcium scale that has been formed by changing the crystal form, while the scale inhibitor inhibits the amount of calcium scale by destroying the growth of crystals. Through static experiments, it is found that these two methods have a better inhibiting effect on water samples with shorter circulation time and lower concentration ratio. YC2655 scale inhibitor has the best inhibiting effect among PC2566, YC2655 and YL505 polycarboxylic acid scale inhibitors. For circulating water that has been circulated for 1 month, magnetic scale inhibitor has a higher anti-scaling rate than dosing polycarboxylic acid scale inhibitor, and its anti-scaling rate is up to 96%. Electrical conductivity and pH can reflect scaling tendency, the smaller electrical conductivity and pH, the smaller scaling tendency of water samples. Therefore, through the detection and comparison of untreated water samples and water samples treated with the above two methods, by analyzing the change rules of their conductivity and pH over time, it is found that the magnetization treatment has a better and more stable anti-scaling effect than dosing scale inhibitor. Finally, it is concluded that compared with dosing polycarboxylic acid scale inhibitor, magnetic scale inhibitor can better solve the scaling of the air-conditioning circulating water system of textile mills.

Apparel Engineering

Structural analysis and performance of daily protective mask

LI Longfei, SHAO Lingda, LIN Ping, ZHU Chengyan, DING Yuanyuan, TIAN Wei

2022, 30(1):  178-184.  DOI: 10.19398/j.att.202101013

Asbtract ( )   HTML ( )   PDF (2608KB) ( )  

Figures and Tables | References | Related Articles | Metrics

In order to study the effect of structural parameters on the filtration efficiency, air permeability and moisture permeability of masks, the structural parameters of the inner layer, filter layer and outer layer of eight kinds of daily protective masks were analyzed, their air permeability, moisture permeability and filtration efficiency were tested and characterized. The results show that the order of size wtih the influence weight of the structural parameters of filter layer on the filtration efficiency is: fiber diameter, average pore size, porosity; with the decrease of fiber diameter, the filtration efficiency of masks increases; the overall air permeability of masks is mainly affected by the inner layer of masks, and with the increase of the air permeability of the inner layer of masks, the overall air permeability shows an increasing trend. The overall moisture permeability of masks is mainly affected by the filter layer, and with the increase of the moisture permeability of the filter layer, the overall moisture permeability shows an increasing trend.

Development and performance evaluation of multi-seasonal sanitation suits

ZHOU Qianwen, HE Jiazhen, LU Zijing, LU Yehu

2022, 30(1):  185-193.  DOI: 10.19398/j.att.202010020

Asbtract ( )   HTML ( )   PDF (3056KB) ( )  

Figures and Tables | References | Related Articles | Metrics

In order to improve the adaptability of sanitation suits for seasonal changes and temperature differences between day and night, a multi-seasonal sanitation suit was developed by optimizing its opening mode and internal structure. Based on an evaluation of the ergonomics of the multi-seasonal sanitation suit, this paper adopted an artificial climate chamber to simulate high temperature (30°C) and low temperature (10°C) environments. A human dress experiment was carried out to evaluate the comfort of this new type of sanitation suit. The research results showed that compared with ordinary sanitation suits, the mobility of shoulders and elbows of the proposed multi-seasonal sanitation suit were significantly improved. In a high temperature environment, it can significantly lower local skin temperature and local skin vapor pressure, and has significant advantages in terms of thermal sensation, moisture sensation and comfort. In a low temperature environment, it can significantly increase the local skin temperature, maintain moderate thermal sensation and comfort, and adapt to climate changes in different seasons.

Contrastive analysis on young male college students boby type between bangladesh and China

ZHANG Beibei, XU Kexin, Md Kawysar Ahmed, XIA Yuanping, JIN Shouning, GU Bingfei

2022, 30(1):  194-203.  DOI: 10.19398/j.att.202012008

Asbtract ( )   HTML ( )   PDF (2665KB) ( )  

Figures and Tables | References | Related Articles | Metrics

In order to analyze the differences between young male college students in Bangladesh and China in terms of body shape, the overall and local body shapes of young male college students in Bangladesh and China were compared and classified. The body parameters of 200 Chinese young male college students and 200 Bangladeshi young male college students were obtained through manual measurement and 3D measurement, and the overall and local body shapes of young male college students in Bangladesh and China were compared and analyzed. As for the overall body shape, the similarities and differences between young male college students in two countries in national standards and overall shape characteristics were analyzed. As for the local body shape, the body shapes of three main characteristic parts of human body, that is, shoulder, chest and waist-hip, were divided into 3 categories for comparative analysis. The research results show that there is a big difference between young male college students in Bangladesh and China in body shape. Chinese young male college students are thinner in overall body type, with obvious body curve, wide shoulder, large curvy chest and rounded hip, and the most Bangladeshi young male college students are well-proportioned, with flat body curve, narrow shoulder, large and flat chest, large waist-hip circumference, flat hip and bulgy abdomen. The results of this study can offer a body shape basis for making garment patterns for young male college students in China and Bangladesh.

Circumference fit of characteristicparts based on the morphological classification of young women’s Lower limbs

XU Kaiyi, ZHONG Zejun, CAI Xiaoyu, GU Bingfei

2022, 30(1):  204-211.  DOI: 10.19398/j.att.202012018

Asbtract ( )   HTML ( )   PDF (2355KB) ( )  

Figures and Tables | References | Related Articles | Metrics

In order to achieve the automatic generation of personalized pant templates, this study discussed the classification method of morphologies of young women's lower limbs and set up a circumference prediction model at five characteristic parts of human body, that is, the waist, abdomen, hip, thigh and knee. The point cloud data of 202 female college students were obtained by the U.S. [TC]² 3D human body scanner, and relevant morphological parameters, i.e., circumference, width and thickness of each characteristic part were measured. Then the morphologies were divided into three types: oblong, round, and prolate, and four morphological indicators were proposed: VD_wh(representing the relative protrusion of waist and hip), D_bw(representing the depression degree in the lower waist), HD_ht(representing the standing posture), and A_tk(representing the leg type). Based on the classification results of morphologies, the morphology of "round" was selected to analyze the width, thickness and circumference of five characteristic parts under this morphology and a regression equation of the circumferences at the characteristic parts were established. The calculation models were verified through a comparison with the manual data. The results show that except that the maximum error at the thigh is 1.98cm, the absolute values of the errors between the predicted circumference values of characteristic parts and manual data are all within the range of 1.5cm, which shows that this circumference prediction method has high accuracy. The present study provides some technical support for the automatic generation of personalized pant templates for young women based on photos.

Optimization method of cycling jacket template based on virtual pressure in 3 riding postures

TIAN Jinyu, TU Ye

2022, 30(1):  212-223.  DOI: 10.19398/j.att.202101020

Asbtract ( )   HTML ( )   PDF (9481KB) ( )  

Figures and Tables | References | Related Articles | Metrics

To improve the dynamic pressure comfort of men's cycling jacket under different road conditions, 170/88A median men are taken as the research objects, and the riding actions of human body in three different postures: on the ground, uphill and downhill are captured, with the help of a three-dimensional human motion capture system. In order to obtain the dynamic data of different riding actions, they are imported into Motion Builder and 3DSMAX software to model virtual models. With the help of a virtual pressure measurement module of CLO 3D software, the dynamic and static pressures of the cycling jacket and their difference in standing and three postures are measured and analyzed. There are differences in the pressure distribution in different riding postures, and there are also differences in the pressure of different garment pieces. In the optimization process of the template of each garment piece, the virtual models try on in postures with a significantly high pressure and the structure is optimized. After optimization, the total pressure of the cycling jacket on the ground, uphill and downhill decrease by 46.6%, 43.7% and 38.7%, respectively. The broken line of pressure tends to be flat, and the pressure values of most measuring points fall significantly. The above results show that the proposed method significantly improves the pressure comfort of the cycling jacket.

Research on the ease of putting on/taking off of barrier-free pants for wheelchair users

WU Jiayue, DAI Mengting, ZHI Aling, SUN Junnan, WU Qiaoying

2022, 30(1):  224-232.  DOI: 10.19398/j.att.202010008

Asbtract ( )   HTML ( )   PDF (1289KB) ( )  

Figures and Tables | References | Related Articles | Metrics

In order to improve the ease of putting on/taking off of pants for people with lower limb disabilities, we divide them into two groups: people with mild and severe lower limb disabilities, design an orthogonal experiment and probed into the effect of 3 factors, clothing fastener, opening position and opening size on their try-on time of barrier-free pants, use range analysis and variance analysis to get an optimal level combination and make a subjective evaluation on the improvement effect of pants. The results indicate that the opening size is the main factor affecting the ease of putting on/taking off of pants and has a very significant effect on the try-on time. The fastener is an important factor, which has a significant impact on the try-on time. The opening position is a secondary factor, which has an insignificant effect on the try-on time. For people with mild lower limb disabilities, when the opening size is 25 cm, the fastener is hook & loop, and the opening position is in the middle, the pants have the best ease of putting on/taking off, and the total time taken to put on and take off is the shortest. For people with severe lower limb disabilities, the opening size is 95 cm, the fastener is a zipper, and the opening position is in the middle of the leg, the pants have the best ease of putting on/taking off. Moreover, the improved barrier-free pants through the optimal level combination are better than unimproved ones in terms of comfort and ease of putting on/taking off.