聚碳硅烷改性碳化硅陶瓷膜的制备及其性能研究  

Preparation and properties of polycarbosilane modified silicon carbide ceramic membrane

作　　者：陈芝 刘阳[1,2] 王丽莉 张勇 饶品华 李光辉[1,2] CHEN Zhi;LIU Yang;WANG Li-li;ZHANG Yong;RAO Pin-hua;LI Guang-hui(Petroleum and Chemical Industry Key Laboratory of Silicon Carbide Ceramic Membrane,Shanghai University of Engineering Science,Shanghai 201620,China;School of Chemistry and Chemical Engineering,Shanghai University of Engineering Science,Shanghai 201620,China;Shaanxi Yanchang Qingshan Science and Technology Engineering Co.,Ltd.,Xi’an 710054,China)

机构地区：[1]上海工程技术大学石油和化工行业碳化硅陶瓷膜重点实验室,上海201620 [2]上海工程技术大学化学化工学院,上海201620 [3]陕西延长青山科技工程股份有限公司,陕西西安710054

出　　处：《应用化工》2024年第4期864-868,共5页Applied Chemical Industry

基　　金：上海市科学技术委员会“浦江人才”计划资助(20PJ1404600);2021年度上海市地方院校能力建设专项项目(21010501400)。

摘　　要：通过包覆法制备了聚碳硅烷包覆的碳化硅粉末,对其制备的生坯进行烧结,得到膜形态良好的碳化硅陶瓷膜。利用扫描电子显微镜、激光共聚焦显微镜、压汞仪和截留测试等手段分析了膜的形貌和截留性能。结果表明,聚碳硅烷在膜层的烧结过程中具有粘结作用,包覆量为5%时,膜层表面平整无裂缝,膜层形态较好。碳化硅初始骨料粒径为0.3μm,聚碳硅烷包覆量为5%,烧结温度为1750℃时,制备的膜层孔径为0.842μm,对100 nm微球截留率高达89%。研究表明,聚碳硅烷在碳化硅膜层形态及孔径控制方面应用优势明显。Polycarbosilane was used to prepare modifed silicon carbide powder by coating method,this polycarbosilane-coated powder was used to prepare a green body of the membrane layer and sintered into a silicon carbide ceramic membrane with good morphology.The morphology and rejection performance of the membrane were analyzed by means of scanning electron microscope,laser confocal microscope,mercury intrusion porosimeter and rejection performance test.The results showed that polycarbosilane played the role of sintering binder in the sintering process.When the coating amount was 5%,the surface of the layer was smooth without cracks,and the layer shape was good.When the silicon carbide particle size was 0.3 μm,the polycarbosilane coating amount was 5% and the sintering temperature was 1 750 ℃,the pore size of the prepared membrane layer was 0.842 μm,and the rejection rate of 100 nm nanospheres was as high as 89%.This study has shown that polycarbosilane has obvious advantages in the application of silicon carbide membrane morphology and pore size control.

关 键 词：聚碳硅烷 碳化硅 陶瓷膜 分离 水处理 

分 类 号：TQ028[化学工程] TQ174