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New BN-epoxy composites obtained by thermal latent cationic curing with enhanced thermal conductivity
Composites Part A: Applied Science and Manufacturing ( IF 8.7 ) Pub Date : 2017-09-09 , DOI: 10.1016/j.compositesa.2017.09.007
Isaac Isarn , Lluís Massagués , Xavier Ramis , Àngels Serra , Francesc Ferrando

A series of boron nitride (BN) composites, with different BN content, were prepared and characterized by cationic curing of DGEBA/BN formulations. As cationic initiator a commercial benzylanilinium salt was used. This cationic system shows good latent characteristics that were not lost on adding the filler. The performance of the catalytic system was optimized by varying the amount of initiator and adding little proportions of glycerol. The kinetics of the curing process was evaluated by calorimetric measurements. The addition of BN allowed increasing thermal conductivity without loss of mechanical properties like Young modulus, impact resistance, adhesion and other thermal characteristics like Tg or thermal stability. In addition, dielectric properties were improved with the increment of filler.



中文翻译:

通过热潜阳离子固化提高导热性的新型BN-环氧树脂复合材料

制备了一系列具有不同BN含量的氮化硼(BN)复合材料,并通过DGEBA / BN配方的阳离子固化进行了表征。作为阳离子引发剂,使用市售的苄基苯胺盐。该阳离子体系显示出良好的潜伏特性,在添加填料时不会丧失。通过改变引发剂的用量并添加少量甘油来优化催化体系的性能。通过量热测量评估固化过程的动力学。BN的添加可以提高导热系数,而不会损失机械性能,如杨氏模量,抗冲击性,附着力和其他热特性,例如Tg或热稳定性。另外,随着填料的增加,介电性能得到改善。

更新日期:2017-09-09
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