高分子透气膜研究──Ⅰ聚二苯基硅氧烷－聚氨酯共聚物的合成及成膜透气性

Research of High-molecular Permeability Film-The Composition of Polydiphenylsiloxane -Pdyurethane and Filming Permeability

采用一步法合成α，ｗ－二羟甲基二苯基硅氧烷与聚氨基甲酸酯的线形嵌段共聚物。将该嵌段共聚物分离后制成均质膜，勿需加热和交联即具有优良的机械性能、良好的透氧性能（Ｐ（ｏ２））及良好的透气选择性（αｏ２／Ｎ２，αｃｏ２／ｏ２）。实验数据表明；由该共聚物制成的膜具有良好的气体分离性能。

By one step, a, w-dihydroxymethyl - diphenylsiloxane and polyurethane can compound the linear block polymer. The homogeneous film is made after separating this block ploymer. Without heating or cross bonding the film has good mechanical property, permeability for oxygen and selectivity. The data indicates that the film made of copolymer has good gas separation property.