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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。
In EP (epoxy resin) / low molecular PA (polyamide) adhesive system, by adding a suitable amount of modified liquid m-PDA (m-phenylenediamine) curing agent, can significantly improve the mechanical properties of the adhesive system. The results show that when m (EP): m (PA) = 10: 5, the mechanical properties of the adhesive are the best. When m (m-PDA): m (PA) = 31.03: The shear strength (17.68 MPa) and compressive strength (94.34 MPa) of the adhesive are good, and the apparent activation energy (49.39 kJ / mol) of the EP / low molecular weight PA / 59.11 kJ / mol) and EP / m-PDA curing system (42.15 kJ / mol).