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机构地区:[1]西北工业大学理学院应用化学系,陕西西安710129
出 处:《中国胶粘剂》2011年第12期5-8,共4页China Adhesives
摘 要:在EP(环氧树脂)/低分子PA(聚酰胺)胶粘剂体系中,通过添加适量的改性液体m-PDA(间苯二胺)固化剂,能明显提高胶粘剂体系的力学性能。研究结果表明:当m(EP)∶m(PA)=10∶5时,胶粘剂的综合力学性能最佳;当固化剂中m(m-PDA)∶m(PA)=31.03∶100时,相应胶粘剂的剪切强度(17.68 MPa)和压缩强度(94.34 MPa)俱佳,其EP/低分子PA/m-PDA固化体系的表观活化能(49.39 kJ/mol)介于EP/PA固化体系(59.11 kJ/mol)和EP/m-PDA固化体系(42.15 kJ/mol)之间。The modified liquid m-PDA(m-phenylenediamine) curing agent with appropriate content, which was introduced into EP(epoxy resin)/low molecular PA(polyamide) adhesive system, could obviously enhance mechanical properties of adhesive system. The research results showed that the adhesive had optimal mechanical properties when mass ratio of m (EP):m (PA) was 10:5. The corresponding adhesive had good shear strength (17.68 MPa) and compressive strength (94.34 MPa), and its apparent activation energy of EP/low molecular PA curing system was 49.39 kJ/mol between EP/PA curing system(59.11 kJ/mol) and EP/m-PDA curing system(42.15 kJ/mol) when mass ratio of m (m-PDA) :m (PA) twas 31.03:100 in curing agent.
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