应用化学 ›› 1992, Vol. 0 ›› Issue (1): 92-94.
• 研究简报 • 上一篇 下一篇
张可达, 刘南安, 田禾
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Zhang Keda, Liu Nanan, Tian He
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摘要： 富氧膜是近年来发展起来的一种能制备富氧空气的新技术[1]。目前国内外使用最广的富氧膜材料是甲基硅氧烷(通常称为硅橡胶)它的透氧系数Po2=6×10-8cm3(STP)·cm/cm2·S·cmHg,αO2/N2=2.0,透气速度快,但机械性能较差,须予以改性[2],改方法包括:嵌段共聚、如硅氧烷与聚碳酸醋的嵌段共聚[3];硅氢加成反应[4]及含经基化合物与烷氧基硅氧烷的脱醇反应[5]。本文采用自由基加成接枝交联反应,将甲基硅橡胶改性,得到了机械性能良好、富氧性能优越的膜材料。
关键词: 富氧膜, 硅橡胶, 接枝聚合物
Abstract: High oxygen permeable methylsilicone rubber membranes have been prepared by graft reaction on it with styrene. The results showed that the oxygen permeability of the membrane varies with the dimethylsilicone content in the copolymer. The oxygen permeability coefficient Po2=3.0?10(-8)cm3cm/cm2·s·cmHg and separation factor αo2/N2=2.25 at 75% content of dimethylsiloxane. The oxygen permeation rate, Jo2, of the membrane increased with the increase of molecular weight of the grafted methylsilicone rubber.
Key words: oxygen enrichment membrane, methylsilicone rubber, graft copolymerization, styrene
张可达, 刘南安, 田禾. 改性硅橡胶富氧膜的制备[J]. 应用化学, 1992, 0(1): 92-94.
Zhang Keda, Liu Nanan, Tian He. PREPARATION OF METHYLSILICONE RUBBER GRAFTED WITH POLYSTYRENE FOR OXYGEN ENRICHMENT[J]. Chinese Journal of Applied Chemistry, 1992, 0(1): 92-94.
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http://yyhx.ciac.jl.cn/CN/Y1992/V0/I1/92
