提高硅橡胶的粘附性制备多层复合膜  

Fabrication of multi-layer composite membranes by increasing the adhesive force of the PDMS gutter layer

作　　者：张旭 孟令鹏 李培[1] ZHANG Xu;MENG Lingpeng;LI Pei(College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China)

机构地区：[1]北京化工大学材料科学与工程学院,北京100029

出　　处：《膜科学与技术》2020年第6期37-43,共7页Membrane Science and Technology

基　　金：国家自然科学基金(51773011)。

摘　　要：以商业化的硅橡胶(PDMS)和添加剂为原料,通过优化添加剂配比,有效地提高了PDMS层的粘附力,并制备了Pebax/PDMS/PAN三层中空纤维复合膜.当PDMS与添加剂配比为1∶3、Pebax涂覆液的质量分数为3%时,复合膜的CO2通量为115.6 GPU,CO2/N2选择性为29.1.证明经过调控的PDMS层表面更容易粘附连续的无缺陷Pebax层.Commercially available PDMS and CRA additives were used to study the functionality of CRA on the increments of adhesive property of PDMS and a three layer hollow fiber composite membrane Pebax/PDMS/PAN was successfully prepared.When the composition of PDMS to CRA was 1∶3,and the mass fraction of Pebax was 3%,the CO2 permeance and CO2/N2 selectivity of the composite membrane were 115.6 GPU and 29.1,respectively.This result demonstrated that the Pebax layer was successfully coated onto the PDMS surface.

关 键 词：PDMS Pebax 多层复合膜 CO2分离 

分 类 号：TQ31[化学工程—高聚物工业]