室温固化环氧树脂胶黏剂的动态力学性能研究  

Researches on dynamic mechanical properties of room-temperature cured epoxy adhesive

作　　者：李卉[1] 罗迎社[1] 谢建军[1] 陈胜铭[1] 

机构地区：[1]中南林业科技大学、流变力学与材料工程研究所,湖南长沙410004

出　　处：《中南林业科技大学学报》2012年第5期186-190,共5页Journal of Central South University of Forestry & Technology

摘　　要：以不同用量的同种固化剂和环氧树脂合成的胶黏剂固化体系为研究对象,对其进行了动态力学性能测定与对比分析。结果表明,固化剂用量不同的两组试样室温完全固化后模量较高,内耗较小。温度扫描测试表明,随固化剂用量增加,环氧树脂胶黏剂的玻璃化转变温度和交联度提高,活化能也相应提高。由两组试样的频率扫描测试结果得到:50℃下tanδ变化图形形状大致相同,可通过上下平移得到不同温度的tanδ图。The epoxy resin adhesive curing behaviours with different dosage of amine curing agent were compared and analyzed. The experimental results show that there were two groups of sample which completely cured at room temperature, and they had higher modulus and small internal friction than others. The temperature scanning test shows that the vitrification transition temperatures crosslinking degree and of epoxy resin adhesive raised as the curing agent dosage increased, and the activation energy for the curing process also increased. The testing results of frequency scan indicate that the two groups of samples＇ tan δ changing curves were approximately same under 50℃, and so the figures of tan（8） under different temperatures can be obtained by moving the curves of tan 6 up and down.

关 键 词：室温固化环氧胶粘剂: 动态力学性能:温度谱图:频率谱图 

分 类 号：S781[农业科学—木材科学与技术]