GO/氟硅乳液复合亚麻整理剂的拒水防紫外线性能

Property of water-repellency and anti-UV of GO/fluorine-silicon emulsion composite flax finishing agent

摘要:

以氧化石墨烯（GO）为功能填料，氟硅丙烯酸酯（FSiAc）乳液为功能黏合助剂，制备氧化石墨烯/氟硅丙烯酸酯（GO/FSiAc）复合乳液整理剂，并通过轧-烘-焙工艺对亚麻织物进行拒水防紫外线多功能整理。利用FTIR、TEM和DLS表征了GO/FSiAc复合乳液的结构和粒径分布；通过XPS和SEM表征了整理亚麻织物的表面元素和形貌；考察了软单体（BA）和硬单体（MMA）的质量比及GO的质量浓度等对整理亚麻织物的耐热性、拒水性、紫外线防护性能及物理机械性能等应用性能及服用性能的影响。结果表明，GO在FSiAc乳液中良好的分散并均匀地覆盖在亚麻织物表面。当m(BA)∶m(MMA)=7∶3，GO的质量浓度达到4 g/L时，表现出优异的拒水性和防紫外线性能，其水接触角为148.48°，紫外线防护系数（UPF）为179.77，紫外线（UVA）波段的透过率为0.63%。与原始亚麻织物相比，GO/FSiAc复合乳液整理亚麻织物的耐热性、断裂强力和断裂伸长率分别提升了60.67℃、153 N和11.1%，同时保持良好的透气性能。经过20次皂洗测试后，水接触角仍为142.00°，UPF为162.22，UVA波段的透过率为0.94%，说明整理后亚麻织物具有良好的耐久性。

Abstract:

Graphene oxide/fluorine-silicon acrylate (GO/FSiAc) composite emulsion finishing agent was prepared by using graphene oxide (GO) as functional filler and fluorine-silicon acrylate (FSiAc) emulsion as functional adhesive aids. And then, it was applied in the water-repellency and anti-UV multifunctionally finishing of flax fabric by roll-dry-bake process. The structure and particle size distribution of GO/FSiAc composite emulsion were characterized by FTIR, TEM and DLS; the surface elements and morphology of the finished flax fabrics were characterized by XPS and SEM; the effects of the mass ratios of soft monomer (BA) and hard monomer (MMA) and mass concentration of GO on the application properties and wearability of the finished flax fabrics were investigated, such as the heat resistance, water repellency, UV protection and physical and mechanical properties. The results showed that GO disperses well in FSiAc emulsion and uniformly covers the surface of flax fabric. When the m(BA)∶m(MMA) = 7∶3, the mass concentration of GO reaches 4 g/L, it shows excellent water repellency and UV protection performance with a water contact angle of 148.48°, a ultraviolet protection factor (UPF) of 179.77, and a transmission rate of 0.63% in the ultraviolet UVA band. Compared with the original flax fabric, the heat resistance, breaking strength and elongation?at?break of the finished flax fabric were improved by 60.67℃, 153 N, and 11.1%, respectively. Meanwhile, the better air permeability of the finished flax fabric were remained. The finished flax fabric has good durability with a water contact angle of 142.00°, UPF of 162.22, and the UVA band transmittance of 0.94% after underwent soap washing tests for 20 times.