高校化学工程学报2016，Vol.30Issue(5)：1036-1042,7.DOI:10.3969/j.issn.1003-9015.2016.00.026
内嵌柔性支撑体PDMS复合膜的制备及其C3气体/N2分离性能研究
Preparation of PDMS Composite Membranes with Flexible Supports and Their Performance in C3 Hydrocarbon Gases/N2 Separation
摘要
Abstract
Polydimethylsiloxane (PDMS) composite membranes with flexible stainless steel mesh support were fabricated by dip-coating, and the morphology of the supports and composite membranes were characterized with scanning electron microscope. Effects of preparation conditions on the separation performance of C3 hydrocarbon/N2 were investigated. Compared with unsupported PDMS membranes, the PDMS composite membranes with flexible support exhibits similar gas selectivity but significantly increase of gas permeation rates, excellent flexibility and mechanical properties. The support structure affects their gas separation performance and the composite membrane with incompact structure shows better gas separation performance. Preparation conditions such as ratio between monomer and crosslinking agent, curing time and concentration of PDMS precursor have great effects on the gas separation performance of the composite membranes. The best gas separation performance can be achieved as PN2=8 GPU, PC3H8=106 GPU, PC3H6=178 GPU, αC3H8/N2= 12 and αC3H8/N2= 21 under optimized preparation conditions. The prepared PDMS composite membranes exhibit good separation performance and long-time permeating stability for hydrocarbon gases.关键词
PDMS复合膜/内嵌/柔性/渗透Key words
PDMS composite membrane/embedded/flexibility/gas permeation分类
化学化工引用本文复制引用
王鸿,李琳,王春雷,王同华..内嵌柔性支撑体PDMS复合膜的制备及其C3气体/N2分离性能研究[J].高校化学工程学报,2016,30(5):1036-1042,7.基金项目
国家自然科学基金(21276035，21376037，21436009，21576035，21506020)；中央高校基本科研业务费专项资金(DUT16RC(4)05)。 （21276035，21376037，21436009，21576035，21506020）
