纳米碳化硅颗粒的团聚及分散的研究进展  

Research Progress in SiC Nanoparticles Aggregation and Dispersion

作　　者：刘亚虎[1] 蔡雪原[1] 朱延超[1] 张琳娇[1] 杨建红[1] 

机构地区：[1]兰州大学物理科学与技术学院微电子研究所,兰州730000

出　　处：《材料工程》2013年第9期84-90,共7页Journal of Materials Engineering

摘　　要：介绍了微粒团聚机理、团聚类型及其区别;在介绍软团聚处理方法的基础上,综述了pH值、悬浮液黏度及分散剂类型对纳米碳化硅分散效果的影响;阐述了自然碳化硅的带电状态、化学成分及其表面改性情况;在列举了添加分散剂前后纳米碳化硅等电点(IEP)的基础上,重点分析了一种新的分散剂—甲苯酰-聚乙烯亚胺的分子结构及工作原理,同时从吸附量、悬浮液黏度及Zeta电位三个方面与传统分散剂作了对比;最后,根据人们对团聚机理的认识及纳米碳化硅分散的研究现状,在未来的研究中不仅要侧重于纳米碳化硅性质、颗粒微观结构的研究,而且要注重纳米碳化硅的工业生产和制备以及分散剂的优化。The recent research progress on the aggregation and dispersion of SiC nanoparticles was presented. The formation mechanisms and types of miero/nanoparticle agglomeration along with differences between them were introduced. Based on listing processing methods of agglomeration, the influence of pH and viscosity of suspension and types of dispersing agents for SiC nanoparticles were shown. The charge states, chemical composition and surface modification of primary SiC particles were elaborated. With summarizing the isoelectric point （IEP） of SiC before and after adding disper- sions, toluoyl-polyethylene imine （T-PEI） was chosen to analyze its molecular structure and working mechanism, and compared with traditional dispersant from adsorption amount, viscosity and Zeta potential. According to the forming mechanism of SiC powder aggregation and research status of its dispersion, the characteristics and microstructure of SiC nanoparticles, as well as its dispersion opti- mization to increase industrial production efficiency, should be developed in the future.

关 键 词：纳米碳化硅 团聚 分散剂 PH值 黏度 ZETA电位 

分 类 号：TQ028.9[化学工程]