Study on the preparation and properties of composite wallcoverings with asy mmetric wettability

doi:10.19398/j.att.202101002

Abstract

Abstract:

In order to improve the peeling strength of underlying fabric and surface fabric of water and oil repellent composite wall coverings and reduce production cost, spraying technology was adopted to apply three-prevention additive to the surface of polyester fleece fabric, so that both sides of the fabric can have asymmetric wettability. The impact of preparation parameters on the water and oil repellency of polyester fabrics and the peeling strength of base fabric were discussed, and the advantages of polyester fleece fabric with asymmetric wettability as composite wall coverings were analyzed. The results indicate that when the mass fraction of three-prevention additive is 8%, the amount of spray is 70 g/m², the baking temperature is 160℃, and the baking time is 60 s, both sides of polyester fleece fabric show significant asymmetric wettability. When reaching the same level of water and oil repellency as the obverse side, the fabric asymmetric wetting method can lower the liquid entrainment rate by 2.1 times compared with the traditional three-prevention additive padding method, and the peeling strength of the fabric is 3.7 times that of the traditional three-prevention additive padding method. Composite wall coverings with asymmetric wettability involved in this study has a low preparation cost, good water and oil repellency on the obverse side and high peeling strength after they are compounded with fabrics. They have a broad application prospect.

Key words: spray, asymmetric wetting, composite wall coverings, water and oil repellency, peeling strength

摘要：

为提高拒水拒油复合墙布底层面料与面层面料的剥离强度及降低生产成本,采用喷涂技术将三防助剂施加于涤纶起绒面料表面,使面料两面具备非对称润湿性,探讨制备工艺参数对涤纶面料拒水拒油性及基布剥离牢度的影响,并分析非对称润湿性涤纶起绒面料作为复合墙布面料应用的优势。结果表明:当三防助剂质量分数8%,喷浆量70 g/m²,焙烘温度160℃,焙烘时间60 s,可以使涤纶起绒面料两面具备显著的非对称润湿特效;在达到正面相同的拒水拒油等级时,织物非对称润湿法比传统浸轧三防剂法可降低2.1倍的带液率,其剥离牢度是传统浸轧三防剂法的3.7倍。非对称润湿性复合墙布面料制备成本低,正面拒水拒油性能良好,与织物复合后的剥离牢度高,具有广阔的应用前景。

关键词: 喷涂, 非对称润湿, 复合墙布, 拒水拒油, 剥离牢度

CLC Number:

TB332

LI Dong, XU Tianwen, SHI Yalun, WANG Chenglong, YE Ting, ZHENG Jinhuan. Study on the preparation and properties of composite wallcoverings with asy mmetric wettability[J]. Advanced Textile Technology, 2022, 30(2): 184-190.

李栋, 徐田文, 施亚伦, 王成龙, 叶挺, 郑今欢. 非对称润湿性复合墙布面料的制备及其性能[J]. 现代纺织技术, 2022, 30(2): 184-190.

Figures/Tables 11

Fig.1 Effect of mass fraction of three proofing agents on peeling fastness of fabrics

Tab.1 Effect of mass fraction of three proofing agents on water and oil repellency of fabric front and back

三防剂质量分数/%	正面拒水等级/级	反面拒水等级/级	正面拒油等级/级	反面拒油等级/级
3	3	0	2	0
4	3	0	2	0
5	3~4	1	3	0
6	4	1	3	1
7	4	2	4	1
8	4~5	2	5	1
9	4~5	3	5	2
10	5	3~4	6	3

Fig.2 Effect of different spraying amounts on peeling fastness of composite fabrics

Tab.2 Effect of different spraying amounts on water and oil repellency of fabric front and back

喷浆量/(g·m^-2)	正面拒水等级/级	反面拒水等级/级	正面拒油等级/级	反面拒油等级/级
30	2	0	2	0
50	3~4	1	3	1
70	4~5	2	5	1
90	4~5	2~3	5	2
110	5	4	6	2
130	5	4	6	3
150	5	4~5	6	4

Tab.3 Effect of different baking temperatures on water and oil repellency of fabric surface

焙烘温度/℃	正面拒水等级/级	反面拒水等级/级	正面拒油等级/级	反面拒油等级/级
120	2	0	1	0
140	3~4	1	4	1
160	4~5	2	5	1
180	4~5	2	5	2
200	4~5	2	5	2

Fig.3 Effect of different baking temperatures on peel fastness of composite fabrics

Tab.4 Effect of different baking time on water and oil repellency of fabric front and back

焙烘时间/s	正面拒水等级/级	反面拒水等级/级	正面拒油等级/级	反面拒油等级/级
30	2	0	1	0
40	3~4	1	2	1
50	4	2	4	1
60	4~5	2	5	1
70	4~5	2	5	2
80	4~5	2	5	2
90	4~5	2	5	2

Fig.4 Effect of different baking times on peeling fastness of composite fabrics

Tab.5 Comparison of product indexes between traditional dip rolling method and spray asymmetric wet wetting method

工艺方法	织物带液率/%	正面拒水等级/级	反面拒水等级/级	正面拒油等级/级	反面拒油等级/级	剥离牢度/N
非对称润湿工艺	33	4~5	2	5	2	17.8
传统浸轧工艺	70	4~5	4~5	5	5	4.8

Fig.5 Comparison of contact angles between front and back surfaces of traditional immersion and rolling fabrics

Fig.6 Comparison of contact angles between the front and back surfaces of sprayed asymmetric wetting fabrics

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