复合型无氟聚丙烯酸酯乳液的制备及其防水性能  

Preparation and waterproof properties of fluorine-free polyacrylate latex composites

作　　者：刘欣宇 李剑浩 王震 沈军炎 杨雷[1,2] LIU Xinyu;LI Jianhao;WANG Zhen;SHEN Junyan;YANG Lei(College of Textile Science and Engineering(International Institute of Silk),Zhejiang Sci-Tech University,Hangzhou,Zhejiang 310018,China;Zhejiang Kefeng Silicone Co.,Ltd.,Jiaxing,Zhejiang 314423,China;Zhejiang Provincial Innovation Center of Modern Textile Technology,Shaoxing,Zhejiang 312033,China;Zhejiang Sci-Tech University Tongxiang Research Institute Co.,Ltd.,Jiaxing,Zhejiang 314599,China)

机构地区：[1]浙江理工大学纺织科学与工程学院(国际丝绸学院),浙江杭州310018 [2]浙江省现代纺织技术创新中心,浙江绍兴312033 [3]浙江科峰有机硅股份有限公司,浙江嘉兴314423 [4]浙江理工大学桐乡研究院有限公司,浙江嘉兴314599

出　　处：《纺织学报》2023年第4期124-131,共8页Journal of Textile Research

基　　金：海宁市科技计划工业项目(2021021)。

摘　　要：针对含氟拒水整理剂存在生物毒性、耐久性较差等问题,合成了一种聚丙烯酸酯型无氟防水剂。将丙烯酸十八酯(SA)分别与丙烯酸乙基己酯(2-EHA)和甲基丙烯酸环己酯(TMCHMA)进行细乳液聚合,制备了成膜等性能不同的2种SA共聚物胶乳;2种胶乳经复合后用于织物的无氟防水整理,借助原子力显微镜观察了复合胶乳涂膜的表面形貌,研究了复合比例及用量对整理织物表面结构以及防水性的影响。结果表明:与2-EHA共聚可提高胶乳的成膜性,而TMCHMA的引入则可增强胶乳的保形性;2种胶乳复合后,在整理后的织物表面形成微纳疏水结构,整理织物的防水性能显著提升,其静态接触角最高可达152°,防水等级达到5级,经50次耐磨损测试后仍保持良好的疏水性能。Objective Textiles with water repellent function have attracted great attention.At present,the water repellent function is generally achieved by finishing textiles with fluorine-containing chemical agents,but this technique was deemed to cause biological toxicity problems.It research aims to investigate environment-friendly fluorine-free water repellent agent for textiles coating.Method Two types of stearyl acrylate(SA)copolymer latex(PSA)were prepared by mini-emulsion polymerization of SA with ethyl hexyl acrylate(2-EHA)and cyclohexyl methacrylate(TMCHMA),respectively.These two types of latex were used for fluorine-free waterproof finishing of fabrics.The morphologies of composite latex films were investigated by atomic force microscope.The effects of composite ratio and dosage on the surface structures and waterproof performances of the finished fabrics were studied.Results To start with,the PSA latex were spin-coated onto glass sildes,and followed by baking at 170℃for 90 s.A relatively smooth surface was observed for latex prepared by copolymerization of SA and 2-EHA,with root mean square roughness(R q)of only 5.0 nm(Fig.2)and contact angle(WCA)of 88°.Submicron bulges appeared on the surface of composite latex films containing PSAh obtained by the copolymerization of SA and TMCHMA.Furthermore,with the growth of PSAh fraction,R q of latex film increased accordingly and attained 13.8 nm as PSAh mass fraction increased to 100%.It led to the water contact angle increasing to 110.0°(Fig.3).During fabric finishing,the dosage of PSAs-PSAh composite latex was kept at 20 g/L.By adjusting the proportion of composite latex,the contact angle of finished Oxford fabric reached a maximum of 144.8°at the PSAh mass fraction of 40%(Fig.5).Then,Oxford fabric was replaced by Chun-Ya-Fang with high waving density.When the mass fraction of PSAh in the composite latex is 80%,the water contact angle(WCA)of finished Chun-Ya-Fang reached a maximum value of 152°(Fig.6).When the dosage of composite latex is increased to 30 g/L,the

关 键 词：丙烯酸十八酯 细乳液聚合 拒水整理 防水性 功能性纺织品 无氟防水剂 

分 类 号：TS195.2[轻工技术与工程—纺织化学与染整工程]