双酚A型环氧树脂(E-51)改性二氧化双环戊二烯(CDR-0122)的性能研究

采用双酚A型环氧树脂(E-51)对耐高温环氧树脂体系二氧化双环戊二烯(CDR-0122)进行了改性处理。分析了E-51改性前后的物理特性,考察了改性前后浇铸体的冲击性能、弯曲性能和玻璃化转变温度,以及树脂基玻纤复合材料的基本力学性能。实验结果表明,E-51与CDR-0122有良好的相容性,且CDR-0122和E-51/CDR-0122树脂体系都应密封保存。添加E-51后浇铸体的冲击强度和弯曲强度分别提高了141.48%和52.38%,玻璃化转变温度下降了2.73%;E-51改性后的树脂基玻纤复合材料的弯曲强度和拉伸强度分别提高了20.5%和19.1%。

Properties Analysis of Dicyclopentadiene(CDR-0122) by Bisphenol A(E-51) Epoxy Resin

Bisphenol A epoxy resin(E-51) was used to modify high-temperature resin Dicyclopentadiene(CDR-0122).Physical characteristics of the pure CDR-0122 and the CDR-0122 modified by E-51 were investigated.Impact properties,bending properties and glass transition temperatures of the two systems of resin were tested.Mechanical properties of glass fiber composites of the two systems of resin were also investigated.The results show that the compatibility between E-51 and CDR-0122 is quite well,and the two kinds of resin are both suitable for sealed storage to avoid of oxidation.Impact properties and bending properties of the CDR-0122 modified by E-51 increased by 141.48% and 52.38% that of unmodified resin,while the glass transition temperature decreased by 2.73%.Besides,the modified tensile strength and flexural strength of the CDR-0122 reinforced glass fiber composites increased by 19.1% and 20.5%.