纳米SiO_2的表面改性及其在环氧丙烯酸酯中的应用  

Surface Modification of Nano-SiO_2 and Its Application on Epoxy Acrylate Resin

作　　者：李镇江[1,2,3] 李泽甫[1] 刘天时[1,2,3] 梁玮[1,2,3] 张林[2,3] 

机构地区：[1]西南科技大学材料科学与工程学院,四川绵阳621010 [2]中国工程物理研究院激光聚变研究中心,四川绵阳621900 [3]西南科技大学-中国工程物理研究院激光聚变研究中心,极端条件物质特性联合实验室,四川绵阳621010

出　　处：《工程塑料应用》2012年第8期90-93,共4页Engineering Plastics Application

基　　金：中物院双百人才基金资助课题项目(20088074)

摘　　要：以甲基丙烯酸异氰酸乙酯(IEM)作为改性剂对纳米SiO2表面进行改性,探讨了相关因素对反应的影响。通过傅立叶红外光谱、热重分析和扫描电子显微镜对改性前后纳米SiO2的表面化学结构、热性能以及在溶液中的分散情况进行了分析表征,考察了改性后的纳米SiO2对环氧丙烯酸酯(EA)力学性能的影响。结果表明,改性后的纳米SiO2分散性较好,对EA的力学性能有较大改善,能同时达到增强增韧的效果。Nano-SiO2 was modified by using 2-isocyanatoethyl methacrylate （ IEM ） as modifier and the influential factors were investigated. The surface structures and thermal property of SiO2 before and after modified were characterized by FTIR and TG, the dispersity of modified SiO2 in the solvent was studied by SEM and the effects of the modified SiO2 on the mechanical properties of epoxy acrylate （ EA ） were investigated. The results showed that modified nano-SiO2 dispersed uniformly in the solvent and the mechanical properties of EA were improved by modified nano-SiO2 compared with the pure EA. Modified nano-SiO2 could enhance the toughness and strength of EA simultaneously.

关 键 词：纳米SIO2 表面改性 环氧丙烯酸酯 

分 类 号：TB383[一般工业技术—材料科学与工程] TQ322.4[化学工程—合成树脂塑料工业]