不同固化体系对酚醛树脂耐热性能的影响  

Study on the effects of different curing systems on heat resistant of phenolic resins

作　　者：吴朝亮[1,2] 刘海燕[3,2] 罗鹏[2] 李石磊[2] 敬波[2] 

机构地区：[1]益阳市消防支队,湖南益阳413000 [2]湘潭大学化学学院高分子材料应用技术湖南省重点实验室,湖南湘潭411105 [3]湖南省消防总队,湖南长沙410000

出　　处：《消防科学与技术》2015年第5期614-616,共3页Fire Science and Technology

基　　金：国家自然科学基金项目(51103124)

摘　　要：制备了一系列不同固化体系的酚醛复合材料,通过热失重测试(TGA)探讨了不同固化体系对酚醛树脂耐热性能的影响。结果表明:单一固化体系中,12%的三聚氰胺(MA)不能固化热塑性酚醛树脂,使用多聚甲醛(PFA)作为固化剂时酚醛树脂的耐热性优于使用六亚甲基四胺(HMTA)固化剂,T5%可达338.0℃;PFA/HMTA复合固化体系配比为10∶2时,T5%提高至360.1℃,Tp提高至416.7℃,且残炭率有一定程度提高,耐热性能得到较大的改善。A series of composite materials of different curing systems were prepared.The effects of different curing systems on heat resistance of phenolic resins were investigated by thermal weight loss analysis（TGA）.The results showed that the use of melamine alone can＇t make phenolic curing when the content of curing agent was 12%.When using the PFA as curing agent,the heat resistance of phenolic resin was superior to the use of HMTA curing agent,the temperature of T5% was 338.0 ℃.When the compound curing system was PFA/HMTA（10∶2）,the temperature of T5% and Tp were increased to 360.1 ℃ and416.7 ℃,and the carbon residue rate increased at a certain degree,The improvement of heat resistance was obvious.

关 键 词：酚醛树脂 多聚甲醛 六亚甲基四胺 三聚氰胺 耐热性能 

分 类 号：X924.4[环境科学与工程—安全科学] TU541[建筑科学—建筑技术科学]