He Gaohong   

Professor
Supervisor of Doctorate Candidates
Supervisor of Master's Candidates

Title : Director of R & D Center of Membrane Science and Technology

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Language:English

Paper Publications

Title of Paper:溶胶-凝胶法制备纳米SiO2/环氧树脂杂化材料

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Date of Publication:2008-07-30

Journal:热固性树脂

Included Journals:PKU、ISTIC

Volume:23

Issue:4

Page Number:19-21

ISSN No.:1002-7432

Key Words:溶胶-凝胶;正硅酸乙酯;硅烷偶联剂;纳米;二氧化硅;环氧树脂;杂化材料

Abstract:采用溶胶凝胶(Sol-Gel)法,以正硅酸乙酯(TEOS)为无机先驱体,γ-甲基丙烯酰氧丙基三甲氧基硅烷(KH-570)为偶联剂,氨水为催化剂,制备了纳米SiO2/环氧树脂杂化材料以有效控制纳米粒子在基体树脂中的分散.考察了共溶剂乙醇对溶胶-凝胶过程的影响,通过力学性能测试研究了TEOS和KH-570用量对杂化材料性能的影响并通过扫描电镜(SEM)对杂化材料的微观结构进行了表征.结果表明:TEOS质量分数为3%,KH-570质量分数为2%时杂化材料拉伸强度和弯曲强度分别提高9%和10%.杂化材料断口形貌有明显的波纹状,表现为韧性断裂.该方法能够实现无机成分和有机环氧树脂在分子级别上的复合,制备出高性能杂化材料.

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