各向异性堆叠结构环氧树脂复合材料的热防护性能  

Anisotropic stacked epoxy composites with excellent thermal properties

作　　者：李佳蓬 夏岚松 张平[2,3] 刘东[1] Li Jiapeng;Xia Lansong;Zhang Ping;Liu Dong(School of Civil Engineering and Architecture,Southwest University of Science and Technology,Mianyang 621010,China;School of Materials Science and Engineering,Southwest University of Science and Technology,Mianyang 621010,China;State key Laboratory of Environment-friendly Energy Materials,Southwest University of Science and Technology,Mianyang 621010,China)

机构地区：[1]西南科技大学土木工程与建筑学院,四川绵阳621010 [2]西南科技大学材料科学与工程学院,四川绵阳621010 [3]西南科技大学材料环境友好能源材料国家重点实验室,四川绵阳621010

出　　处：《强激光与粒子束》2020年第3期53-56,共4页High Power Laser and Particle Beams

基　　金：国家自然科学基金项目(51306156);西南科技大学龙山人才计划项目(17LZX647,18lzx509);西南科技大学研究生创新基金项目(19ycx0089)

摘　　要：基于导热-隔热原理,通过在环氧树脂(Epon)中添加质量分数为5%,15%,25%的六方氮化硼(h-BN)作为填料制备环氧基散热层,质量分数为1%的膨胀蛭石(E-ver)作为填料制备环氧基隔热层,设计了宏观交替堆叠的环氧复合材料,并进行了热防护性能的研究。研究结果表明:具有各向异性结构的复合材料,顶部中心温度较传统材料的温度下降13~16℃,热延迟时间大大提升,并随着h-BN含量的增加,热性能得到明显改善。理论分析了该堆叠结构下复合材料"横向散热、纵向抑热"的机理。With the rapid development of high-power lasers and electronic technology, higher requirements have been proposed for the structure and material of the heat sink device. Based on the principle of conductioninsulation heat, alternating stack epoxy resin composites with excellent thermal protection were prepared, the hexagonal boron nitride(h-BN:5%, 15%, 25%) and expanded vermiculite(E-ver: 1%) are used as fillers for heat dissipation layer and thermal insulation layer, respectively. The thermal protection performance experiment was completed. The result shows that the temperature of the top center is 13-16 °C lower than that of the traditional materials, and the thermal delay time is greatly improved. An increase in the h-BN content causes an increase in the thermal protection properties of the composites. The thermal mechanism of the anisotropic stacked composites was explained.

关 键 词：环氧树脂 各向异性 热防护性能 六方氮化硼 膨胀蛭石 

分 类 号：TQ320[化学工程—合成树脂塑料工业]