中国塑料 ›› 2010, Vol. 24 ›› Issue (01): 11-16 .DOI: 10.19491/j.issn.1001-9278.2010.01.003

• 材料与性能 • 上一篇    下一篇

介孔SiO2的有机化修饰及其对环氧树脂拉伸性能的影响

焦剑 刘攀博 邹亮   

  1. 西北工业大学理学院应用化学系 西北工业大学理学院应用化学系 西北工业大学理学院应用化学系
  • 收稿日期:2009-10-09 修回日期:1900-01-01 出版日期:2010-01-26 发布日期:2010-01-26

Organic Modification of Mesoporous Silica and Its Effects on Tensile Properties of Epoxy Resins

JIAO Jian LIU Panbo ZOU Liang   

  • Received:2009-10-09 Revised:1900-01-01 Online:2010-01-26 Published:2010-01-26
  • Contact: JIAO Jian

摘要: 利用正硅酸乙酯(TEOS)及γ-氨基丙基三甲氧基硅烷(APTMS)共缩聚合成了蠕虫状的介孔二氧化硅(SiO2);研究了有机化修饰对介孔SiO2结构的影响;采用熔融共混法制备了环氧树脂/介孔SiO2复合材料,并研究了复合材料的拉伸性能。结果表明,APTMS的引入使介孔SiO2的有序性变差,孔径、孔容及比表面积减小,当介孔SiO2中APTMS的含量达到20 %时,介孔结构消失;当介孔SiO2的用量为2 %~10 %时,环氧树脂/介孔SiO2复合材料的拉伸强度和断裂韧性的提高较为显著,但断裂伸长率变化不大。

关键词: 介孔二氧化硅, 有机化修饰, 环氧树脂, 有机-无机互穿网络, 拉伸性能

Abstract: A series of mesoporous silica was prepared from tetraethylorthosilicate (TEOS) and γ-aminoproplytrimethoxysiliane (APTMS) by polycondensation. The introduction of APTMS decreased the pore size, pore volume, and specific surface area of the mesoporous silica. When the loading of APTMS was 20 %, the meso-pore-structure in silica was no longer observed. The mesoporous silica was introduced into epoxy resin via melting blending forming a composite. With increasing amount of mesoporous silica from 2 % to 10 %, the tensile properties and toughness of the composites increased observably, and the elongation at break was little changed.

Key words: mesoporous silica, organic modification, epoxy resin, organic-inorganic interpenetrating network, tensile property