陕西科技大学学报（自然科学版）Issue(1)：11-16,6.
超支化聚氨酯／聚氨酯共混膜的制备及其性能研究
Study on the preparation and properties of HBPU/PU blend films
摘要
Abstract
The synthetic leather PU resin and the hyperbranched polyurethane containing re‐active amino (HBPU) were blended in the form of physical distribution .And the blend films were prepared successfully under certain conditions .The effect of hyperbranched polyure‐thane content on the properties of the films was studied .The results showed that the water absorption rate ,water vapor transmission rate and water vapor permeability siginifically im‐proved after adding 10% HBPU ,which increased from 0 .79% to 2 .07% ,from 94 .314 g/(m2 · d) to 471 .570 2 g/(m2 · d) and from 51 .3 mg · 10 cm -2 · 24 h-1 to 184 .7 mg · 10 cm -2 · 24 h-1 ,respectively .The tensile strength of membrane decreased ,and then the elon‐gation at break increased .While the HBPU content greater than 10% ,the changes were not much ;AFM showed that the surface roughness of the mixed membranes increased;SEM showed that the blend films formed inside more pore ,in favour of water molecules through .关键词
超支化聚氨酯/聚氨酯/共混/性能Key words
hyperbranched polyurethane/polyurethane/blend/properties分类
化学工程引用本文复制引用
任龙芳,陈婷,强涛涛,高文娇..超支化聚氨酯／聚氨酯共混膜的制备及其性能研究[J].陕西科技大学学报（自然科学版）,2016,(1):11-16,6.基金项目
陕西省科技厅青年科技新星计划项目（2013KJXX-78）；陕西省教育厅专项科研计划项目（14JK1090）；陕西科技大学科研创新团队计划项目 （）
