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用十二烷二酸对双酚A环氧树脂进行改性,研究了十二烷二酸加入量对环氧树脂黏度以及耐热性能和力学性能的影响。结果表明:环氧树脂的玻璃化转变温度随着十二烷二酸加入量的增加而升高,最高能达到112℃;改性后环氧树脂损耗因子峰值最大能提高13%;十二烷二酸的加入量为0.3%时,环氧树脂的力学性能最好;经过十二烷二酸改性后的环氧树脂有一定的高温阻尼性能;最后,探讨了十二烷二酸改性环氧树脂的机理。
The dodecanedioic acid was used to modify bisphenol A epoxy resin. The effects of dodecanedioic acid addition on the viscosity, heat resistance and mechanical properties of the epoxy resin were studied. The results show that the glass transition temperature of epoxy resin increases with the addition amount of dodecanedioic acid increasing up to 112 ℃. The peak value of epoxy resin loss factor can be increased by 13% The addition of diacid is 0.3%, the mechanical properties of the epoxy resin is the best; after dodecanedioic acid modified epoxy resin has some high temperature damping properties; Finally, discussed the modified dodecanedioic acid Epoxy resin mechanism.