关键词: 凉感涤纶, 防紫外整理, 导热系数, UPF, UVA, 耐洗, 透气性

Abstract: In the context of global warming, the heat of summer and the intense ultraviolet radiation have become a problem that cannot be ignored in people's Daily life. It has become particularly important for textiles to meet people's needs for coolness, comfort, protection against UV burning and tanning. Therefore, the research and development of textiles with these functions has become an important topic in the textile industry. In response to this demand, we have deeply studied the processing methods of cool textiles and UV-resistant textiles. First of all, we focus on reducing the thermal resistance of textiles, improving the thermal conductivity, so that the heat generated by the human body can be quickly released and discharged, the stuffy feeling of the human body can be overcome and the comfort of wearing can be improved. To this end, we modified the fiber raw materials with aluminum nitride and spun it successfully to make cool-feeling polyester fabrics.
At present, the commonly used ultraviolet finishing agents in the domestic market are mainly organic ultraviolet absorbers based on benzophenone and benzotriazole compounds, and they are suitable for anti-ultraviolet finishing of all kinds of clothing fabrics, giving clothing fabrics excellent anti-ultraviolet properties. Inorganic substances have refractivity and optical activity to incident light, and ultraviolet scatters mainly utilize this feature to reflect and scatter ultraviolet light to varying degrees. These substances are metals, metal oxides and their salts, such as titanium dioxide, silicon dioxide, iron oxide and carbon black. Nanoscale UV scattering particles, which can also absorb ultraviolet rays and have stronger blocking ability against ultraviolet rays, have become an important material for the development of anti-ultraviolet finishing agents.
Considering the particularity of AlN cool-feeling modified polyester fabrics, we adopted an innovative method to prepare a UV protective finishing agent TQ-100 by combining nano inorganic dispersion with organic UV absorbent. We used one dip and one roll finishing method to treat the cool polyester fabric with UV protection, and compared it with common UV protection finishing agents sold in the market. Through testing, comparison and analysis of the surface morphology, thermal conductivity, washable resistance, air permeability and UV light resistance of the cool-feeling polyester fabrics before and after finishing, we have drawn the following conclusions: the TQ-100 finishing agent can significantly improve the cool-feeling effect of the polyester fabric, and has good durability and UV light resistance. At the same time, the finishing agent has little effect on the air permeability of the fabric under proper usage amount. The results show that it is a more reasonable method to finish AlN cool polyester fabric with agent combined inorganic nanomaterials with mechanical UV-resistant materials. This not only meets people's needs for coolness and UV protection, but also ensures the fabric's air permeability and durability. We believe that this research result will have great guiding significance for the UV and suntan protection finishing of cool textiles in summer.

Key words: cool-feeling polyester, UV-resistant finishing, thermal conductivity, UPF, UVA, washable, air permeability