摘要
为了提高环氧树脂(EP)的性能,采用具有氨基官能团的笼型倍半硅氧烷(POSS)改性。首先通过POSS与EP发生化学反应,形成有机无机杂化树脂;然后固化杂化树脂,得到POSS/EP有机无机杂化材料。文中研究了杂化树脂的凝胶特性和杂化材料的热性能,包括热变性温度(HDT)、玻璃化转变温度(T_g)和高温热分解性能。研究结果表明,POSS可以使EP的凝胶时间延长;当POSS质量分数在10%以内时,杂化材料的HDT和T_g随着POSS含量增加而显著提高;POSS的引入可显著提高EP的热稳定性,EP的起始热分解温度Ti为359℃,而杂化材料EP5、EP10和EP20的T_i分别为383.97℃、389.30℃和393.27℃。
Amino-functionalized polyhedral oligomeric silsesquioxane （POSS） was used to modify epoxy to improve the performance of epoxy resin （EP）. POSS reacted with EP to form hybrid resins which were cured to obtain organic-inorganic hybrids. The hybrids were studied in terms of the gelation behavior and their thermal properties including thermal deflection temperature （HDT）, glass transition temperature （Tg） and high-temperature degradation. The results show that POSS can prolong the gelation time of EP. HDT and Tg of the hybrids are increased significantly with POSS content increasing when POSS content is below 10%. POSS can greatly enhance the thermal stability of EP. The initial thermal degradation temperature （Ti） of EP is 359 ℃, while Ti of EPS, EP10 and EP20 is 383.97℃, 389.30 ℃ and 393.27 ℃, respectively.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2011年第6期38-40,共3页
Polymer Materials Science & Engineering
基金
中国博士后科学基金一等资助(20090450102)
中国博士后科学基金特别资助(201003661)
长安大学基础研究支持计划资助(CHD2009JC083)
关键词
笼型倍半硅氧烷
环氧树脂
杂化材料
热性能
polyhedral oligomeric silsesquioxane
epoxy resin
hybrid materials
thermal properties
