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一种三元共聚型聚酰亚胺的制备与表征 总被引:1,自引:0,他引:1
以3,3'-二甲基-4,4'-二氨基二苯甲烷、1,3-双(4-氨基苯氧基)苯(1,3-APB)与3,3',4,4'-二苯醚四羧酸二酐(ODPA)进行缩聚反应,制得一种新型的三元共缩聚型聚酰亚胺。将此聚合物与两种二元共缩聚型聚酰亚胺的性能进行对此,发现三元共聚型聚酰亚胺的溶解性能、力学性能和热性能皆较好,且使用范围扩大。 相似文献
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A multifunctional amine, 1,4-bis(2,4-diaminophenoxy)benzene(14 BDAPOB), was prepared and used as a novel hardener for novolac epoxy resin(ER). The structure of 14 BDAPOB 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/14 BDAPOB) 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 Ea of the ER/14 BDAPOB(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(Tonset) were 398.8 ℃(ER/14 BDAPOB)and 334.3 ℃(ER/LCA-30). The tensile shear strengths were 21.63 MPa(ER/14 BDAPOB) and 21.28 MPa(ER/LCA-30). The results showed that the two cured systems exhibited good thermal and mechanical properties. 相似文献
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耐高温单组分环氧胶粘剂的研制 总被引:9,自引:5,他引:4
以马来酸酐(MA)为封端剂,以2,2-双(3-氨基-4-羟基苯基)六氟丙烷(BAHPFP)、2,2-双[4-(4-氨基苯氧基)苯基]丙烷(BAPOPP)、2,2-双[4-(3,4-二羧基苯氧基)苯基]丙烷二酐(BPADA)为主原料合成了含酚羟基的聚醚酰亚胺树脂(HPEI);以HPEI为耐高温增韧剂,与N,N,N,N-四缩水甘油基-4,4′-二氨基二苯甲烷(TGDDM)、氢化双酚A环氧树脂(HBPAE)、潜伏性固化剂等配制了综合性能优异的耐高温单组分环氧胶粘剂。 相似文献
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