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
陈芝 1刘阳 1王丽莉 2张勇 2饶品华 1李光辉1
作者信息
- 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;上海工程技术大学化学化工学院,上海 201620
- 2. 陕西延长青山科技工程股份有限公司,陕西 西安 710054
- 折叠
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0.3 μm,聚碳硅烷包覆量为5%,烧结温度为1 750℃时,制备的膜层孔径为0.842 μm,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.
Abstract
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,mercu-ry 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 sili-con 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Key words
polycarbosilane/silicon carbide/ceramic membrane/separation/water treatment引用本文复制引用
基金项目
上海市科委"浦江人才"计划(20PJ1404600)
上海市地方院校能力建设专项(2021)(21010501400)
出版年
2024
NETL
NSTL
万方数据