水性聚氨酯膜的制备及在超纤革中的应用

发布时间：2018-06-02 19:31

  本文选题：水性聚氨酯 + 超纤革　； 参考：《高分子材料科学与工程》2017年10期

【摘要】：以水性聚氨酯(WPU)为聚合物,采用物理机械发泡的方法制备WPU膜,系统研究了成膜温度对WPU膜形态结构和性能的影响规律。结果表明,当成膜温度低于100℃时,所制备WPU膜的泡孔密度、表面孔孔径、平均孔径、结晶度、透气量、透湿率、断裂强度和断裂伸长率等均随成膜温度的升高而增大。其中,当成膜温度为80℃时,膜具有最佳的性能。随着成膜温度进一步升高,膜的表面出现裂纹,透气量和透湿率增加,而断裂强度和断裂伸长率显著减小。在此基础上,经干法移膜技术制备的WPU超纤革达到了成品等级的A类产品。
[Abstract]:WPU films were prepared by physical and mechanical foaming with water-borne polyurethane (WPUU) as polymer. The effects of film forming temperature on morphology, structure and properties of WPU films were systematically studied. The results show that the bubble density, surface pore diameter, average pore size, crystallinity, air permeability, moisture permeability, breaking strength and elongation at break of WPU membrane increased with the increase of film forming temperature when the temperature of the membrane was lower than 100 鈩，

本文编号：1969923