引用本文: | 吕文丽,肖加余,徐旺生,等.双酚A环氧树脂改性二氧化双环戊二烯体系固化动力学分析及其性能研究[J].国防科技大学学报,2012,34(3):38-43,62.[点击复制] |
LV Wenli,XIAO Jiayu,XU Wangsheng,et al.Curing dynamics analysis and properties of acycloaliphatic modified by bisphenol A(E-51) epoxy resin[J].Journal of National University of Defense Technology,2012,34(3):38-43,62[点击复制] |
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双酚A环氧树脂改性二氧化双环戊二烯体系固化动力学分析及其性能研究 |
吕文丽1,2, 肖加余1, 徐旺生2, 曾竟成1, 刘钧1, 蒋卫和3 |
(1.国防科技大学 航天与材料工程学院,湖南 长沙 410073;2.武汉工程大学 化工与制药学院,湖北 武汉 430073;3.湖南岳阳昌德化工实业有限公司,湖南 岳阳 414004)
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摘要: |
二氧化双环戊二烯(CDR-0122)环氧树脂固化物的耐热性较好,但脆性大。采用不同质量分数的环氧(E-51)改性CDR-0122。对不同的改性体系进行DSC分析,确定其活化能、反应级数和最佳固化工艺。对改性的CDR-0122环氧树脂固化物进行力学性能和耐温性能测试。结果表明:当加入E-51的质量分数为30%时,CDR-0122的树脂体系的综合性能最优。相比改性前,改性后的树脂体系活化能略有下降,并且其拉伸强度和弯曲强度分别提高了52.38%和54.77%,但玻璃化转变温度略有下降。 |
关键词: 二氧化双环戊二烯 E-51 改性 力学性能 耐温性能 |
DOI: |
投稿日期:2011-07-16 |
基金项目:国家部委基金项目 |
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Curing dynamics analysis and properties of acycloaliphatic modified by bisphenol A(E-51) epoxy resin |
LV Wenli1,2, XIAO Jiayu1, XU Wangsheng2, ZENG Jingcheng1, LIU Jun1, JIANG Weihe3 |
(1.College of Aerospace and Materials Engineering, National University of Defense Technology, Changsha 410073, China;2.College of Chemical Engineering and Pharmacy, University of Wuhan Institute of Technology, Wuhan 430073, China;3.Changde Chemcial Corporation Limited, Yueyang 414004, China)
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Abstract: |
Acycloaliphatic(CDR-0122) epoxy resin has good heat-resistance, but it is characterized by being brittle. CDR-0122 modified with different mass fraction of epoxy (E-51) were studied. First, DSC analysis was carried out to determine the activation energy, reaction order and the best curing procedure of the modified resin. Then mechanical property and heat-resistance property of the cured modified resin were tested. The results showed that, compared with the unmodified CDR-0122, the activation energy of the modified resin system decreased slightly, and its tensile strength and flexural strength increased by 52.38% and 54.77%, respectively, but the glass transition temperature decreased slightly. Considering all aspects of performance, the system of CDR-0122 modified with 30 wt% E-51 is the best one. |
Keywords: acycloaliphatic epoxy modification mechanics property heat-resistance |
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