碳纳米管改性环氧树脂的导热和阻燃性能

发布时间：2018-05-19 19:51

本文选题：环氧树脂 + 碳纳米管　；参考：《应用化学》2017年01期

【摘要】：以双酚A二缩水甘油醚(DGEBA)环氧树脂(Epoxy Resin,EP)为基体、甲基六氢苯酐(MHHPA)为固化剂、以多壁碳纳米管(MWCNTs)为添加剂制备了环氧树脂/碳纳米管纳米复合材料。通过对微观结构、玻璃化转变温度(Tg)、热失重、热导率和锥形量热测试结果分析,研究了质量分数少于1.5%的MWCNTs对环氧树脂的导热和阻燃性能影响,结果表明,MWCNTs质量分数为1.5%时,复合材料发生团聚;纳米复合材料随着MWCNTs质量分数的增加Tg值先增加后降低;失重5%时,对应的温度先增加后降低,残炭量增加;样品的热导率呈现先升高后降低的趋势,当MWCNTs质量分数为1%时,复合材料的热导率最大;MWCNTs加入后环氧树脂的总释热量减少,释烟量增加,阻燃性得到一定程度的提高。
[Abstract]:Epoxy resin / carbon nanotube nanocomposites were prepared using bisphenol A diglycidyl ether (DGEBA) epoxy resin Epoxy ResinEPe as matrix, methylhexahydrophthalic anhydride (MHHPA) as curing agent and multiwalled carbon nanotubes (MWCNTs) as additives. Based on the analysis of microstructure, glass transition temperature (TG), thermogravimetry, thermal conductivity and cone calorimetry, the effects of less than 1.5% mass fraction of MWCNTs on the thermal conductivity and flame retardancy of epoxy resin were studied. The results showed that the mass fraction of MWCNTs was 1.5%. The nanocomposites were agglomerated; the TG value of the nanocomposites first increased and then decreased with the increase of MWCNTs content; the corresponding temperature increased first and then decreased, and the carbon residue increased when the weight loss was 5. The thermal conductivity of the samples increased first and then decreased. When the mass fraction of MWCNTs is 1, the maximum thermal conductivity of the composite is obtained. The total heat release of epoxy resin decreases, the smoke emission increases and the flame retardancy is improved to some extent.
【作者单位】：长春富维-江森自控汽车饰件系统有限公司;中国科学院长春应用化学研究所高分子物理与化学国家重点实验室;
【基金】：国家自然科学基金项目资助(21274152)~~
【分类号】：TQ323.5;TB332

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