超疏水气凝胶涂层超高分子量聚乙烯织物的制备与表征  

Preparation and characterization of super hydrophobic aerogel coated ultra-high molecular weight polyethylene fabric

作　　者：杜晗笑 郑振荣[1,2] 曹森学 陈逢亮 DU Hanxiao;ZHENG Zhenrong;CAO Senxue;CHEN Fengliang(School of Textiles, Tianjin Polytechnic University, Tianjin 300387, China;Tianjin Key Laboratory of Advanced Textile Composites, Tianjin Polytechnic University, Tianjin 300387, China)

机构地区：[1]天津工业大学纺织学院,天津300387 [2]天津工业大学天津市先进纺织复合材料重点实验室,天津300387

出　　处：《纺织学报》2018年第4期93-99,共7页Journal of Textile Research

基　　金：天津市自然科学基金企业科技特派员项目(17JCTPJC47800);中国纺织工业联合会科技指导性项目(2017030)

摘　　要：为提高超高分子量聚乙烯织物的疏水性能,基于荷叶效应原理,采用涂层方法在织物表面构筑纳米-微米结构。将二氧化硅气凝胶分散于聚偏氟乙烯(PVDF)溶液中制成涂层液,并对超高分子量聚乙烯织物进行涂层处理。借助X射线光电子能谱仪、扫描电子显微镜、原子力显微镜等测试织物表面的化学组成及微结构,并采用集灰实验测定织物的自清洁性能。结果表明:当PVDF质量分数为12%、二氧化硅气凝胶质量分数为8%时,涂层织物表面的最大接触角为157.8°,滚动角为3°;涂层膜表面有微米级突起和纳米级颗粒状突起;水滴可将涂层后织物表面的污物带走,织物具有良好的自清洁效果。In order to improve the hydrophobicity of ultra-high molecular weight polyethylene fabric,micro-and nano-scale structures were built by coating the fabric surface based on the lotus effect.Silica aerogel was dispersed in polyvinylidene fluoride for preparing coating solution,and ultra-high molecular weight polyethylene fabric was coated by the solution.The chemical composition and microstructure of the fabric surface were detected by a X-ray photoelectron spectrograph,a scanning electron microscope and an atomic force microscope.The self-cleaning properties of the fabric were mearsured by the ash collection test.The results show that when the mass fraction of PVDF is 12% and that of the silica aerogel is 8%,the maximum contact angle of the coated fabric surface is 157.8°,and the rolling angle is 3°.The coated film surface has micro-scale projections and nano-scale particle projections.Stain on the coated fabric surface can be taken away by water droplets,so the fabric surface has excellent self-cleaning property.

关 键 词：超高分子量聚乙烯织物 拒水整理 自清洁性能 二氧化硅气凝胶 聚偏氟乙烯 

分 类 号：TS195.6[轻工技术与工程—纺织化学与染整工程]