文献类型：期刊文献

中文题名：聚口恶唑烷酮/异氰脲酸酯的低温合成与耐热性能

英文题名：Thermal Properties of Polyoxazolidone-Isocyanurate Synthesized at Low Temperature

作者：张晓灵[1];霍娜丽[2];杨加栋[1];张杰[2];胡春圃[2]

机构：[1]中海油(天津)管道工程技术有限公司,天津300452;[2]华东理工大学材料科学与工程学院,上海200237

年份：2015

卷号：31

期号：2

起止页码：36

中文期刊名：高分子材料科学与工程

外文期刊名：Polymer Materials Science & Engineering

收录：CSTPCD;;EI(收录号：20152701003150);Scopus;北大核心:【北大核心2014】；CSCD:【CSCD2015_2016】；

语种：中文

中文关键词：低温合成;环氧树脂;催化剂;口恶唑烷酮;异氰脲酸酯

外文关键词：synthesis at low temperature;;epoxy resin;;catalyst;;oxazolidone;;isocyanurate

摘要：以2,4-二苯基甲烷二异氰酸酯(MDI-50)、环氧树脂(E-54)为原料,分别以Cr3+、Al Cl3和Al Cl3·HMPA为催化剂,在100℃合成了聚口恶唑烷酮/异氰脲酸酯。用红外光谱研究了异氰脲酸酯与口恶唑烷酮的反应历程,用热重分析表征了口恶唑烷酮/异氰脲酸酯的比例与耐热性能的关系。结果表明,3种催化剂首先快速催化氨基甲酸酯/脲基甲酸酯以及异氰脲酸酯三聚环的生成;口恶唑烷酮环逐渐形成,随着受热时间延长,氨基甲酸酯/脲基甲酸酯和异氰脲酸酯逐渐解聚与环氧反应转化为口恶唑烷酮环。材料的耐热性能随口恶唑烷酮含量的增加而增强,最大热失重温度较环氧树脂提高了50℃,达434℃,且750℃时的残炭率提高了3倍。
Polyoxazolidone-isocyanurate was prepared at 100 ℃ using bisphenol A diglycidyl ether(E54) and diphenyl methane diisocyanate(MDI) as raw materials and Cr3 +,Al Cl3,Al Cl3·HMPA as catalysts respectively. The evolution of oxazolidone/isocyanurate during reaction and thermal properties were investigated by FT-IR and thermal gravimetric analysis(TGA). It is demonstrated that the three catalysts first promote rapid formation of urethane/allophanate,isocyanurate,secondly the oxazolidone formation. Oxazolidone can be generated with urethane/allophanate and the isocyanurate decomposition through consisting heating. The heat resistance increases with increasing the oxazolidone content,the maximum mass loss rate temperature is up to 434 ℃,increase of 50 ℃ and the ultimate char yield at 750 ℃ increases 3 times compared with neat epoxy resin.