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首页> 外文期刊>Polymers for advanced technologies >Efficient thermal properties enhancement to hyperbranched aromatic polyamide grafted aluminum nitride in epoxy composites
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Efficient thermal properties enhancement to hyperbranched aromatic polyamide grafted aluminum nitride in epoxy composites

机译：环氧树脂复合物中超支化芳族聚酰胺接枝氮化铝的有效热性能增强

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摘要

Aluminum nitride (AlN) nanoparticles were firstly treated with a silane coupling agent, g-aminopropyl-triethoxysilane (g-APS), to introduce amine groups (AlN-APS), then grafting of the hyperbranched aromatic polyamide started from themodified surface (AlN-HBP). The surfacemodified AlN nanoparticles were characterized by Fourier transform infrared, nuclearmagnetic resonance, and thermogravimetric analyzer. Then the nanoparticles with these three different interface structures were selected as reinforcing fillers for epoxy composites. The study reports the influence of interfacial structure of nanoparticles on the morphology and thermal properties of epoxy composites. It was found that the AlN-HBP nanoparticles result in a strong interface and thus the incorporation of the AlN-HBP nanoparticles not only improved the dispersion of the nanoparticles in the epoxy matrix but also enhanced the thermal conductivity, thermal stability, glass transition temperatures, and dynamical thermomechanical properties.
机译：首先将氮化铝（AlN）纳米颗粒用硅烷偶联剂g-氨基丙基-三乙氧基硅烷（g-APS）处理，以引入胺基（AlN-APS），然后从改性表面接枝超支化芳族聚酰胺（AlN- HBP）。表面改性的AlN纳米粒子通过傅立叶变换红外，核磁共振和热重分析仪进行表征。然后，选择具有这三种不同界面结构的纳米粒子作为环氧复合材料的增强填料。该研究报道了纳米颗粒的界面结构对环氧复合材料的形貌和热性能的影响。已经发现，AlN-HBP纳米颗粒产生牢固的界面，因此掺入AlN-HBP纳米颗粒不仅改善了纳米颗粒在环氧基质中的分散性，而且还提高了导热性，热稳定性，玻璃化转变温度，和动态热机械性能。

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