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以马来海松酸酐为原料,通过与多元胺(二乙烯三胺、三乙烯四胺、四乙烯五胺)进行酰胺化反应,合成了3种环氧树脂固化剂马来海松酸酐聚酰胺,分别命名为聚酰胺样品Ⅰ、聚酰胺样品Ⅱ、聚酰胺样品Ⅲ。利用傅里叶红外光谱仪(FT-IR)、热重分析仪(DTA)、拉力机等分析测试手段,对环氧树脂/马来海松酸酐聚酰胺体系固化产物的特征性能进行了表征。结果表明,环氧树脂分别与3种聚酰胺样品按理论质量配比100∶51、100∶45、100∶45混匀后,在室温放置6 h后再于80℃固化4 h,可完全固化,环氧树脂/聚酰胺样品Ⅰ剪切强度可达21.6 MPa,3种固化体系热分解温度均大于300℃,可望在对剪切强度、耐热等级要求较高的固化剂领域得到广泛应用。
Using maleopimaric anhydride as the raw material, three kinds of epoxy resin curing agents, maleated mandelic anhydride polyamide, were synthesized through amidation reaction with polyamine (diethylenetriamine, triethylenetetramine, tetraethylenepentamine) Named polyamide sample Ⅰ, polyamide sample Ⅱ, polyamide sample Ⅲ. The characteristic properties of the cured product of the epoxy / maleic anhydride polyamide system were characterized by Fourier transform infrared spectroscopy (FT-IR), thermogravimetry (DTA) and tensile testing. The results show that epoxy resin and three kinds of polyamide samples, respectively, after the theoretical mass ratio of 100:51,100:45,100:45 mixing, at room temperature for 6 h and then cured at 80 ℃ for 4 h, can be completely cured , The shear strength of epoxy resin / polyamide sample I can reach 21.6 MPa, and the thermal decomposition temperature of the three curing systems are both above 300 ℃. It is expected to be widely used in the field of curing agent which has high requirements on shear strength and heat resistance .