文献类型：期刊文献

中文题名：改性双酚A型氰酸酯树脂体系耐湿热性能的研究

英文题名：HYDROTHERMAL BEHAVIOURS OF MODIFIED BISPHENOL A DICYANATE ESTER RESIN SYSTEMS

作者：付东旭[1];王帆[1];王家樑[1];余若冰[1]

机构：[1]华东理工大学材料科学与工程学院,特种功能高分子材料及其相关技术教育部重点实验室,上海200237

年份：2012

期号：5

起止页码：19

中文期刊名：玻璃钢／复合材料

外文期刊名：Fiber Reinforced Plastics/Composites

收录：CSTPCD;;北大核心:【北大核心2011】；CSCD:【CSCD_E2011_2012】；

基金：国家自然科学基金项目(51103038)

语种：中文

中文关键词：氰酸酯树脂;湿热性能;热性能;介电性能;热固性树脂

外文关键词：cyanate ester resins;hydrothermal properties;thermal properties;dielectric properties;thermosetting resins

摘要：本文的目的在于通过本实验室自行合成的四甲基对二甲苯型氰酸酯(BBZCy)与双酚A型氰酸酯(BADCy)共聚,改善BADCy的耐湿热性能。主要考察了在水煮及50℃、96%相对湿度环境下湿热处理后材料的吸湿性、热性能及介电性能的变化规律。结果表明,随着体系中BBZCy用量的增大,树脂材料的吸水率、介电常数和介电损耗均逐渐减小,同时BBZCy的加入有效提高了材料的耐湿热性能,当BBZCy用量为30wt%时树脂的综合性能最优,50℃、96%相对湿度环境下湿热处理500h的吸水率为0.87%,Tg为275℃,介电常数和介电损耗分别为2.90、3.9×10-3。
In order to improve the hydrothermal properties of bisphenol A dicyanate ester resin(BADCy),a novel cyanate ester resin with low dielectric and water absorption performance,which is named 1,4-bis(3,5-dimethyl-4-cyanatobenzyl)benzene(BBZCy),was synthesized and used to copolymerized with BADCy.The water absorption,thermal and dielectric properties of modified cyanate ester resins immersed in the boiling water and the relative humidity environment(RH96%,50℃) were investigated by the methods of the weight measurement,DMA,and dielectric analysis.The results showed that the water absorption,dielectric constant and dissipation factor decreased gradually with the increase of the content of BBZCy.Meanwhile,the hydrothermal properties of modified cyanate ester resins were improved a lot.The modified system with 30wt% BBZCy showed the best performance overall,the water absorption at RH96% and 50℃ was 0.87%,and the glass transition temperature(Tg),dielectric constant and dissipation factor were respectively 275℃,2.90 and 3.9×10-3 in dry state at 25℃.