DMF/SiO_2有机溶胶的制备与表征  

Preparation and characterization of DMF/SiO_2 organic sol

作　　者：刘见祥[1,2] 仇伟[1,2] 张波[1] 曾化雨[2] 曾舒[1,2] 

机构地区：[1]贵州省冶金化工研究所,贵阳550002 [2]贵州省纳米材料工程中心,贵阳550002

出　　处：《化工新型材料》2012年第12期70-72,共3页New Chemical Materials

基　　金：贵州省自然科学基金项目(黔科合J合字[2011]2023号)

摘　　要：采用3-(2,3-环氧丙氧)丙基甲基三甲氧基硅烷(CG-560)对硅溶胶进行接枝改性后,与适量的N,N-二甲基甲酰胺(DMF)混合均匀,除去混合液中水分,制备DMF/SiO2有机溶胶。探讨了不同硅烷用量对表面接枝的影响,并用傅里叶红外光谱(FT-IR)、透射电镜(TEM)对有机溶胶进行分析表征。研究结果表明:添加适量的硅烷可以对硅溶胶表面羟基实现最大接枝改性,有机溶胶为无色透明液体,有机溶胶粒子呈球形,粒径约20nm,粒度分布均匀。Organic sol of DMF/SiOe was prepared through graft-modifing to Silica sol by using 3-（2,3-epoxy prop oxy） propyl methyl trimethoxysilane （CG-560）, and then was well-mixed with N, N-dimethylformamide（DMF） and remo- ving water from mixture solution. The influences of different amount of silane to surface grafting were studied, the organic sol was characterized by FT-IR and TEM methods. The results showed that the graft modification could reach a maximum with right amount of silane was added. The sol was no-colour clear liquid, organic sol particles were sphere, the particle size was about 20nm and was well distributed.

关 键 词：有机溶胶 接枝改性 DMF SIO2 

分 类 号：TB383.1[一般工业技术—材料科学与工程] TQ427[化学工程]