合成革用聚氨酯/纳米SiO_2原位杂化膜的制备及性能研究  

Preparation and Properties of Nano-SiO_2 In-situ Hybrid Polyurethane Membranes

作　　者：陈意[1] 张秀丽[1] 范浩军[1] 李振云[1] 袁继新[2] 刘若望[2] 

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6100651 [2]温州大学化学与材料科学学院,浙江温州325024

出　　处：《中国皮革》2008年第17期24-28,共5页China Leather

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

摘　　要：采用原位有机—无机杂化技术将纳米SiO2引入合成革用聚氨酯膜中,并对杂化薄膜的表面/截面形态、力学性能、透水汽性、吸水率和防霉性能进行了检测。结果表明:当SiO2的含量不超过0·50%时,原位生成的SiO2颗粒不仅在聚氨酯薄膜的表面和截面分布均匀,且其平均粒径被控制在100nm左右;同时,纳米级SiO2的原位引入对聚氨酯薄膜的抗张强度和透水汽性均有提高;而且本试验所制备的聚氨酯/纳米SiO2原位杂化膜还表现出优异的防霉(黑曲霉)性能。A series of polyurethane （PU） membranes with different silica content were prepared via an in - situ organic - inorganic hybrid process, and the surface/cross section morphologies, mechanical property, water vapor permeabilities （WVPs）, water swelling and antifungal activity of the hybrid PU samples were investigated respectively. SEM analysis indicated that with the silica content lower than 0.50%, the average size of nano particles which dispersed homogeneously both exterior and interior of the polymer membranes, is controlled to be 100nm approximately without large agglomerates observed. In the presence of these nano - SiO2 particles, the hybrid PU membranes not only showed improved tensile strength and WVPs, but also exhibited excellent antifungal activity against Aspergillus niger, which might be of great potential for application in the PU synthetic leather manufacturing.

关 键 词：聚氨酯合成革 纳米SIO2 原位杂化 性能 

分 类 号：TS529[轻工技术与工程—皮革化学与工程]