以合适比例的耐高温多官能团环氧树脂树脂、双酚A型酚醛环氧树脂、增韧剂、双氰胺和有机脲类促进剂为原料制备耐高温环氧树脂,然后采用该树脂与东丽T700碳纤维通过热熔两步法制备预浸料。研究了树脂的固化反应特性、80℃(熔胶温度)下的黏度变化规律、耐热性能和固化物的室温与高温(150℃)力学性能,以及复合材料的耐热性能和室温与高温(150℃)力学性能。结果表明,树脂具有高的耐热性能(Tg=242.9℃)、良好的低温稳定性和高温反应性,其力学性能良好,且高温下性能保持率高;复合材料具有高的耐热性能(Tg=239.4℃)、良好的力学性能和优异的高温下性能保持率。
Epoxy resin(EP) with high temperature resistant was prepared by multifunctional EP with high temperature resistant,bisphenol A(BPA) novolac EP,toughening agent,dicyandiamide and tertiary amine accelerators,using this resin and Toray T700 carbon fiber prepared prepreg by hot-melt method.The resin'scuring reaction characteristics,change of viscosity at 80℃ (melting temperature),heat resistance and mechanical properties of the cured product at room temperature and high temperature (150℃),as well as the composite's heat resistance,room temperature and high temperature (150℃) mechanical properties were researched.The results shown that the resin had high heat resistance (Tg=242.9℃),good low temperature stability and high temperature reactivity,its mechanical properties were good,and the performance retention rate at high temperature was high.The composite had high heat resistance (Tg=239.4℃),good mechanical properties and excellent performance retention rate at high temperature.
[1] 益小苏,复合材料手册[M].北京:化学工业出版社,2009.
[2] 詹博文,孙凌玉,黄彬城,等.车用复合材料螺旋弹簧的设计与优化[J].北京航空航天大学学报,2018,44(7):1520-1527.
[3] 王彬,李荣.碳纤维增强复合材料在国家重大基础设施建设领域的应用与发展[J].科技导报,2018,36(19):64-72.
[4] 中国化学会.中国化学会2017全国高分子学术论文报告会摘要集[C].四川成都:[出版者不详],2017.
[5] 王铭辉.碳纤维复合材料在航空航天领域的应用研究[J].现代商贸工业,2019,40(8):191-193.
[6] 马传勋,禹正杨.天然纤维增强医用复合材料的研究现状[J].现代医药卫生,2012,28(10):1524-1526.
[7] 张胜男,刘艳兵.汽车用碳纤维复合材料的结构设计与加工工艺[J].汽车工艺与材料,2018(9):1-8.
[8] 门永林,楚永萍,冯遵委.纤维增强复合材料在转向架上的应用研究[J].铁道机车车辆,2019,39(3):92-94,100.
[9] 杨磊.基于纤维增强复合材料在体育器材上的应用[J].粘接,2019,40(5):136-138.
[10] 霍红宇,张思,张宝艳,等.一种民用高温固化环氧树脂基复合材料性能研究[J].民用飞机设计与研究,2019(3):37-41.
[11] 李胜业,朱波,王伟,等.苯氧树脂增韧自行车轮圈用环氧树脂体系性能研究[J].中国胶粘剂,2019,28(6):29-32,37.
[12] Akovali G.Handbook of composite fabrication[M].Shrophire:Rapra Technology Limited,2001.
[13] 中国化学会.2013年全国高分子学术论文报告会论文摘要集[C].上海:[出版者不详],2013.
[14] 胡玉明,吴良义.固化剂[M].北京:化学工业出版社,2004.
[15] 赵明,郭鸯鸯,唐义号,等.双氰胺与口恶唑烷酮环氧树脂体系固化动力学[J].化学与黏合,2018,40(1):5-8.
[16] 吴晓青,李嘉禄,康庄,等.TDE-85环氧树脂固化动力学的DSC和DMA研究[J].固体火箭技术,2007(3):264-268.
[17] 施琪,吴亚平,王丽霞,等.碳纤维复合材料抗拉性能测试结果的影响因素分析[J].兰州交通大学学报,2008(4):51-53,61.
基金资助
柯桥区高层次人才引进创新项目(ACX201806)
PDF
