聚氨酯/纳米TiO_2原位杂化涂层的制备及其通透性能研究  

Nano- TiO_2 In- situ Hybrid Polyurethane Leather Coating with Enhanced Permeability

作　　者：陈意[1] 石欢欢[1] 范浩军[1,2] 袁继新[2] 刘若望[2] 张才 付善淼 

机构地区：[1]四川大学制革清洁技术国家工程实验室,四川成都610065 [2]温州大学化学与材料科学学院,浙江温州325024 [3]浙江五洲实业有限公司,浙江丽水323000

出　　处：《中国皮革》2009年第15期11-15,共5页China Leather

基　　金：浙江省重大科技专项课题资助项目(2007C11100);国家863项目资助(2007AA03Z341)

摘　　要：在聚氨酯溶液湿法成膜的过程中引发前驱体的原位水解缩聚反应,成功地将纳米级TiO_2颗粒均匀地引入聚氨酯合成革涂层中。低温氮吸附/脱附试验证明,在有机聚氨酯和无机纳米TiO_2颗粒间形成了相间孔隙,这使得本试验所制备的聚氨酯/纳米TiO_2原位杂化涂层具有明显提高的透气、透湿性。As polyurethane solution coagulated in wet phase inversion process, in - situ hydrolysis and condensation reactions of nano precursor were triggered synchronously to introduce nano - TiO2 into polyurethane synthetic leather coating. Water vapor and gas permeability of the hybrid coatings are found to increase with an increasing concentration of nano - TiO2 , which is explained as voids formed at organic polymer - inorganic nano particle interface. The existence of such voids was proved in nitrogen adsorption/desorption experiment, by the determination of extra mesopores and higher specific surface area than predicted values.

关 键 词：聚氨酯 纳米TIO2 原位杂化 透气透湿 合成革 

分 类 号：TS513[轻工技术与工程—皮革化学与工程]