化工学报2011，Vol.62Issue(6)：1749-1755,7.DOI:10.3969/j.issn.0438-1157.2011.06.041
环氧树脂/活化纳米氧化铝复合材料的固化动力学
Curing kinetics of epoxy/activated nano-Al2O3 composites
周红军 1尹国强 1林轩 1葛建芳 1庄妙红1
作者信息
- 1. 仲恺农业工程学院化学化工学院,广东,广州,510225
- 折叠
摘要
Abstract
Nano-aluminum was subjected to surface activation using sodium hydroxide (NaOH) solution. In order to introduce epoxy group onto the surface of nano-aluminum, Υ-glycidoxypropyl trimethoxysilane (KH560) and EP resin were used for surface treatment after the activation process. The effect of activated nano-aluminum and epoxy functionalized nano-aluminum on the mechanism and kinetic parameters of curing reaction of epoxy resin were studied by means of nonisothermal differential scanning calorimetry (DSC). The relationship between activation energy and conversion of the curing reaction was determined by using the isoconversional methods of Friedman and KAS, and the kinetics parameters were also obtained by using Kissinger equation. The results showed that the existence of activated nanoaluminum and epoxy functionalized nano-aluminum increased the rate constant and decreased gelling temperature. The addition of activated nano-aluminum and epoxy functionalized nano-aluminum increased activation energy and dealing temperature. When 2％ KH560 modified nano-aluminum was used, gelling temperature decreased 6.5℃, and dealing temperature increased 17. 5℃, but has no obvious effect on the order of reaction and did not change the overall curing reaction mechanism.关键词
环氧树脂/活化纳米氧化铝/固化动力学/等转化率法Key words
epoxy/ activated nano-aluminum/ cure kinetics/ isoconversional method分类
化学化工引用本文复制引用
周红军,尹国强,林轩,葛建芳,庄妙红..环氧树脂/活化纳米氧化铝复合材料的固化动力学[J].化工学报,2011,62(6):1749-1755,7.
