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  

Curing dynamics analysis and properties of acycloaliphatic modified by bisphenol A(E-51) epoxy resin

作　　者：吕文丽[1,2] 肖加余[1] 徐旺生[2] 曾竟成[1] 刘钧[1] 蒋卫和 

机构地区：[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

出　　处：《国防科技大学学报》2012年第3期38-43,62,共7页Journal of National University of Defense Technology

基　　金：国家部委基金项目

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。Acycloaliphatic （CDR -0122） epoxy resin has good heat-resistance, but it is characterized by being brittle. C DR -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.

关 键 词：二氧化双环戊二烯 E-51 改性 力学性能 耐温性能 

分 类 号：TN248[电子电信—物理电子学]