文献类型：期刊文献

中文题名：碳纳米管/氮化硼混杂填料对尼龙6导热性能的影响及其机理

英文题名：Effects of CNTs/BN Hybrids on the Thermal Conductivity of PA6 Composite and Its Mechanism

作者：王亮[1];吴唯[1];邹志强[1];刘江[1];Andreas Fischer[2];Dietmar Drummer[2]

机构：[1]华东理工大学材料科学与工程学院中德先进材料联合研究中心;[2]Institute of Polymer Technology,Friedrich-Alexander-Universit?t Erlangen-Nürnberg(FAU),Erlangen 91054,Germany

年份：2019

卷号：35

期号：3

起止页码：42

中文期刊名：高分子材料科学与工程

外文期刊名：Polymer Materials Science & Engineering

收录：CSTPCD;;EI(收录号：20192106970915);Scopus;北大核心:【北大核心2017】；CSCD:【CSCD2019_2020】；

语种：中文

中文关键词：尼龙6;混杂填料;热导率;三维导热模型

外文关键词：polyamide 6;hybrids;thermal conductivity;three-dimensional heat transfer model

摘要：利用熔融共混工艺,首先制备了尼龙6/氮化硼(PA6/BN)复合材料。根据复合材料的热导率确定BN添加量后,在PA6/BN体系中添加碳纳米管(CNTs)并引入相容剂以改善填料与基体的界面相容性,通过测定材料的热导率,并借助差示扫描量热分析、动态力学热分析、扫描电镜等手段,探讨CNTs/BN混杂填料对于PA6材料性能的影响,在此基础上建立了相应的三维导热模型来解释体系的导热机理。结果表明,2%CNTs和20.83%BN混杂可显著改善复合材料的导热性能,热导率达0.76 W/(m·K),为纯PA6的2.45倍,同时保持较好的绝缘性;复合材料的动态力学分析结果与扫描电镜图及所搭建导热模型吻合较好。该PA6基导热材料有望应用于LED等电子电气的外壳材料。
Polyamide 6/hexagonal boron nitride(PA6/BN) composites were firstly prepared by melt blending. After determining the optimal dosage of BN according to the thermal conductivity of the composites, carbon nanotubes and compatilizer were further introduced into the PA6/BN blends. The thermal conductivity test, DSC, DMA and SEM were carried out to investigate effects of CNTs/BN hybrids on properties of the PA6 composites, and the corresponding three-dimensional heat transfer models were proposed to explain their thermal conduction mechanism. The results show that CNTs/BN(2%/20.83%) hybrids could dramatically enhance the thermal conductivity of the PA6 composites, the thermal conductivity value is 0.76 W/(m·K), 2.45 times of pure PA6. Meanwhile, the DMA results and SEM images agree well with the proposed model. The thermal conductive PA6 composites are promising to be used as appliance materials.