沥青增韧环氧树脂的研究

TOUGHENING OF EPOXY USING BITUMEN AS MODIFIER

研究沥青作为一种新的增韧剂,对环氧树脂的增韧效果,并测试分析不同含量的沥青对环氧树脂的韧性影响。结果表明,添加2%的沥青时,环氧树脂冲击韧性提高120%;环氧树脂的拉伸强度和模量随沥青含量的增加变化不大。红外分析结果表明,沥青和环氧树脂之间没有发生化学作用。差示扫描热分析结果显示,沥青含量超过2%之后,固化产物玻璃化转变温度有一定程度降低。

This article describes the toughening effect on epoxy using bitumen as the modifier.Impact properties,tensile properties and thermal properties with different bitumen contents were analyzed.With the addition of only 2％ bitumen to epoxy,maximum improvements of 120％ were obtained for impact energy.The addition of bitumen had no significant effect on tensile properties of epoxy.FTIR result showed that there was no chemical reaction between epoxy and bitumen.DSC analysis of the hybrid showed that the Tg of epoxy decreases significantly after 2％ bitumen.