三维超疏水超细纤维绒面革的仿生构建  

Bionic construction of three-dimentional super hydrophobic microfiber suede leather

作　　者：高强 范浩军[1] 颜俊[1] 陈玉国 郑萍 GAO Qiang;FAN Haojun;YAN Jun;CHEN Yuguo;ZHENG Ping(Key Laboratory of Leather Chemistry and Engineering,Ministry of Education,Sichuan University,Chengdu,Sichuan 610065,China;Shandong Tianqing Technology Development Co.,Ltd.,Dezhou,Shandong 253000,China)

机构地区：[1]四川大学皮革化学与工程教育部重点实验室,四川成都610065 [2]山东天庆科技发展有限公司,山东德州253000

出　　处：《纺织学报》2022年第10期126-132,共7页Journal of Textile Research

基　　金：山东省重点研发计划(重大科技创新工程)项目(2019JZZY010355);清远市创新创业团队项目(清科[2018]31号)。

摘　　要：为解决超细纤维绒面革二维超疏水表面耐久性差的问题,提出了一种三维超疏水超细纤维绒面革的构建方法。将含氟水基聚氨酯和纳米前驱体正硅酸乙酯的混合液均匀含浸至超细纤维非织造布中,在弱酸性条件下诱发纳米前驱体在超细纤维绒面革内部原位生成纳米SiO_(2)颗粒,形成了整体具有自相似性的类荷叶微纳粗糙结构,仿生构建了三维超疏水超细纤维绒面革,并对其接触角、形貌特征、元素组成、摩擦耐久性和化学稳定性进行了测试与表征。结果表明:所制备的超细纤维绒面革表面水接触角高达153.5°;即使经受2100次摩擦,浸泡在乙醇、对二甲苯、四氢呋喃、正己烷、pH值为1和14的水溶液中24 h,皂洗10次,紫外光照24 h,热处理后其水接触角均可保持在150°左右,显示出优异的超疏水稳定性。In order to tackle the poor durability of 2-D super hydrophobic microfiber suede leather,a construction method of 3-D super hydrophobic microfiber suede was proposed inspired by the hydrophobic structure of lotus leaf surface and the special 3-D network structure of microfiber nonwoven.The mixture of fluorine-containing waterborne polyurethane and nano precursor(tetraethoxysilane)was uniformly impregnated to superfine fiber nonwoven,and under weak acid conditions the nano precursor was induced to in-situ generate nano SiO_(2) particles inside the microfiber suede,which formed a lotus-like micro/nano rough surface with overall self-similarity.A 3-D super hydrophobic microfiber suede leather was bionically constructed,and its morphology,chemical composition,contact angle,friction durability and chemical stability were measured and characterized.The results show that the water contact angle of microfiber suede surface is up to 153.5°.After 2100 times of abrasion,soaking for 24 h in aqueous solutions(pH=1 and 14)containing ethanol,p-xylene,tetrahydrofuran,and n-hexane,soap washing for 10 times,exposing to UV light for 24 h,and heat treatment,the water contact angle is still around 150°,demonstrating a durable 3-D super hydrophobicity.

关 键 词：仿生 超细纤维 合成革 绒面革 超疏水 自相似性 

分 类 号：TS565[轻工技术与工程—皮革化学与工程]