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首页> 外文期刊>Physical chemistry chemical physics: PCCP >Thermal conductivity improvement of surface-enhanced polyetherimide (PEI) composites using polyimide-coated h-BN particles
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Thermal conductivity improvement of surface-enhanced polyetherimide (PEI) composites using polyimide-coated h-BN particles

机译:使用聚酰亚胺涂层的h-BN颗粒提高表面增强的聚醚酰亚胺(PEI)复合材料的导热性

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摘要

In this study, we investigated the thermal conductivities and mechanical properties of polyetherimide (PEI) composites using polyimide (Pl)-coated h-BN (PI-BN) particles. We found that Pl-coated h-BN effectively increased adhesion with the PEI matrix, imparting enhanced mechanical and thermal stability and thermal conductivity with increasing BN content. The thermal conductivity of the PEI composite containing 60 wt% PI-BN was 3.3 W m~(-1) K~(-1), while the thermal conductivity of the PEI/BN composite without modification was 2.6 W m~(-1) K~(-1) The PEI/PI-BN composites show higher impact strengths than the PEI/BN composites because of less BN particle agglomeration and good wettability between PEI and h-BN. The results indicate that the Pl-coated BN incorporated into the PEI matrix effectively enhances the thermal conductivity and mechanical properties of the PEI composites.
机译:在这项研究中,我们研究了使用聚酰亚胺(Pl)涂层的h-BN(PI-BN)颗粒的聚醚酰亚胺(PEI)复合材料的热导率和机械性能。我们发现,Pl涂层的h-BN有效地增加了与PEI基质的附着力,并随着BN含量的增加而增强了机械和热稳定性以及导热性。含有60 wt%PI-BN的PEI复合材料的导热系数为3.3 W m〜(-1)K〜(-1),而未经改性的PEI / BN复合材料的导热系数为2.6 W m〜(-1 )K〜(-1)PEI / PI-BN复合材料比BEI / BN复合材料具有更高的冲击强度,这是因为BN颗粒的聚集较少,PEI与h-BN之间具有良好的润湿性。结果表明,掺入PEI基体中的涂有P1的BN有效地增强了PEI复合材料的导热性和机械性能。

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