摘要
以BMI(双马来酰亚胺)作为改性剂、DDM(4,4’-二氨基二苯甲烷)作为固化剂,制备耐高温EP(环氧树脂)胶粘剂。研究结果表明:采用正交试验法优选出制备BMI/EP/DDM胶粘剂的最优方案为m(EP)∶m(DDM)=1∶1.00、m(BMI)∶m(EP)=0.4∶1、混合搅拌时间为30 min和搅拌转速为300 r/min;采用非等温DSC(差示扫描量热)法和T-β(温度-升温速率)外推法,确定了该胶粘剂的固化工艺条件为"60℃处理3 h→88℃处理2 h→112℃处理2 h→121℃处理2 h";经BMI改性后,耐高温EP胶粘剂的耐热性和力学性能均有所提升。
With BMI (bismaleimide) as modifier, DDM (4,4'-diamino diphenyl methane) as curing agent, a high temperature resistance-EP (epoxy resin) adhesive was prepared. The research results showed that the optimal scheme of preparing BMI/EP/DDM adhesive was preferred by orthogonal experiment when mass ratios of m (EP) : m(DDM) and m(BMI) : m(EP) were 1:1.00 and 0.4:1 respectively, mixing stirring time and stirring speed were 30 min and 300 r/rain respectively. The curing process conditions for "60 ~C treatment 3 h--~88 ~C treatment 2 h---+ 112 ~C treatment 2 h--*121 ~C treatment 2 h" of BMI/EP/DDM adhesive were determined by non-isothermal DSC (differential scanning calorimetry) method and T-/3 (temperature-heating speed) extrapolation method. The heat resistance and mechanical properties of high temperature resistanee-EP adhesive, which was modified by BMI, could be improved.
出处
《中国胶粘剂》
CAS
北大核心
2014年第1期38-41,共4页
China Adhesives
关键词
耐高温
环氧树脂
胶粘剂
双马来酰亚胺
改性
high temperature resistance
epoxy resin(EP)
adhesive
bismaleimide(BMI)
modified