Processing and Properties of Flexible Hot Gas Sealing Materials for Ceramic Membrane

作     者：SUN Guangchao LIU Kaiqi LIU Qingzhu SI Kaikai 

作者机构：State Key Laboratory of Multiphase Complex SystemsInstitute of Process EngineeringChinese Academy of Sciences 

出 版 物：《China's Refractories》 (中国耐火材料（英文版）)

年 卷 期：2018年第27卷第4期

页      面：31-40页

学科分类：0817[工学-化学工程与技术] 08[工学] 

基　　金：financially supported by National Key R&D Program of China(Grant No:2016YFB0601100) 

主　　题：hot flue gas sealing materials binder ceramic membrane filtration 

摘      要：Ceramic membranes are effective to reduce PM2.5 emission when used for hot flue gas *** properties of the sealing material play a decisive role infiltration ***,there are few studies on sealing materials for hot flue gas filtration above 700 ℃.This investigation was performed to develop flexible sealing materials which can be used for a long time at high *** order to obtain sufficient mechanical strength and continuous flexibility,three kinds of binders were selected as coating *** sealing materials based on high silica fiber fabric and aluminum silicate fiber fabric were successfully *** effect of aging on mechanical properties and microstructural characteristics of the composites subjected to coating had been investigated by XRD,SEM and *** results show that waterborne polyurethane (WPU) is a suitable coating binder for the sealing materials,which can be used for a long time at 1 000 ℃ and 700 ℃,respectively,without significant decrease in ***,the other two binders,aluminum dihydrogen phosphate and aluminum chromium phosphate will weaken the flexibility,resulting in frangibility and reducing sealing *** developed composites possess required thermo-stability and desired mechanical strength as flexible sealing materials,indicating their strong application possibility in hot flue gas filtration.