【摘 要】
：
A multifunctional amine,1,4-bis(2,4-diaminophenoxy)benzene(14BDAPOB),was prepared and used as a novel hardener for novolac epoxy resin(ER).The structure of 14BDAPOB was characterized with Fourier transform infrared(FT-IR)spectroscopy and differential scan
【机 构】
：
College of Chemistry,Chemical Engineering and Biotechnology,Donghua University,Shanghai 201620,China
【出 处】
：
武汉理工大学学报（材料科学版）（英文版）
论文部分内容阅读
A multifunctional amine,1,4-bis(2,4-diaminophenoxy)benzene(14BDAPOB),was prepared and used as a novel hardener for novolac epoxy resin(ER).The structure of 14BDAPOB was characterized with Fourier transform infrared(FT-IR)spectroscopy and differential scanning calorimetry(DSC).The curing kinetics of the novolac epoxy resin/1,4-bis(2,4-diaminophenoxy)benzene(ER/14BDAPOB)system was studied by means of non-isothermal DSC experiments at five heating rates and determined by the Kissinger,Ozawa and Crane methods.The results showed that the activation energy E a of the ER/14BDAPOB(74.56 kJ/mol)system was higher than that of the epoxy resin/LCA-30(ER/LCA-30,68.85 kJ/mol),where LCA-30 is a commercial modified diamine.The reaction order,frequency factor and the reaction rate constant at peak temperature of the two systems were calculated.The initial decomposition temperatures(T onset)were 398.8 ℃(ER/14BDAPOB)and 334.3 ℃(ER/LCA-30).The tensile shear strengths were 21.63 MPa(ER/14BDAPOB)and 21.28 MPa(ER/LCA-30).The results showed that the two cured systems exhibited good thermal and mechanical properties.
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