第 52 卷第 4 期Vol. 52 No. 4
2022 年 8 月Aug 2022

所属栏目:功能材料

纳米SiO2表面改性及其分散性研究
周剑林1,2,曾荣今3* (1.湖南科技大学 资源环境与安全工程学院,湖南 湘潭 411201;2.湖南科技大学 煤炭资源清洁利用与矿山环境保护湖南省重点实验室,湖南 湘潭 411201;3.湖南科技大学 化学化工学院,湖南 湘潭 411201)
摘 要:以气相法纳米SiO2为研究对象,通过表面改性方式增加纳米SiO2在溶剂体系中的分散性,研究了改性剂种类、改性剂质量分数、温度、时间和pH对纳米SiO2分散性的影响,结果表明:硅烷偶联剂对纳米粒子分散性影响较大,在酸性条件下,纳米粒子改性比较合适,改性温度为60 ℃,改性剂质量分数为0.5%,改性时间为60 min时,获得的纳米SiO2粒子分散性较好。
关键词:耐电晕漆;纳米粒子;改性;分散性
中图分类号:TM21  文献标识码:A  文章编号:1009-9212(2022)04-0052-05
Surface Modification and Dispersion of Nano SiO2
ZHOU Jian-lin1,2, ZENG Rong-jin3* (1. School of Resource & Environment and Safety Engineering, Hunan University of Science and Technology, Xiangtan 411201,China; 2. Hunan Province Key Laboratory of Coal Resources Clean-utilization and Mine Environment Protection, Hunan University of Science and Technology, Xiangtan 411201, China; 3. School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China)
Abstract:Nano SiO2 was taken as the research object to increase the dispersion of Nano SiO2 in the solvent system by surface modification. The effects of modifier type, concentration of modifier, temperature, time and pH on the dispersion of Nano SiO2 in the solvent system were studied. The results showed that silane coupling agent had a great influence on the dispersion of Nano SiO2, and the modification of Nano SiO2 was more appropriate under acidic conditions. When the modification temperature was 60 ℃, the modifier concentration was 0.5%, and the modification time was 60 min, the Nano SiO2 particles had good dispersion.
Key words:corona resistant paint; nanoparticles; modification; dispersion
基金项目:湖南省重点研发计划项目(2019GK2237),湖南省自然科学基金项目(2021JJ50124);湖南省普惠性政策与创新环境建设计划项目(2021GK5048)。
作者简介:周剑林(1982—),男,湖南桃源人,讲师,研究方向:绝缘材料应用(E-mail:jianlinzhou@hnust.edu.cn)。
联 系 人:曾荣今,教授,研究方向:绝缘材料研发。
收稿日期:2021-12-28