耐高温、高导热聚合物复合绝缘材料的原位聚合制备和介电、热学性能研究

项目名称： 耐高温、高导热聚合物复合绝缘材料的原位聚合制备和介电、热学性能研究

项目编号： No.51477096

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 电工技术

项目作者： 黄兴溢

作者单位： 上海交通大学

项目金额： 89万元

中文摘要： 为了提升电力设备和电子器件的性能、增加可靠性并延长其使用寿命，必须采取有效的措施散去设备和器件内积聚的热量。传统的聚合物绝缘材料导热系数低，是限制电力设备和电子器件热量散失的瓶颈。制备耐高温、高导热的聚合物复合绝缘材料是解决这一问题的重要办法。本项目以表面改性的氮化硼纳米管（球）为无机导热颗粒，将聚苯硫醚前驱体引入到改性的纳米氮化硼表面，直接进行原位聚合得到耐高温、高导热的聚苯硫醚复合绝缘材料。通过控制反应条件调控聚苯硫醚与纳米氮化硼的比率，调控聚苯硫醚的分子链长度、支化度和聚集态结构等。研究原位聚合制备的聚苯硫醚/氮化硼复合绝缘材料的介电性能和热性能，并与常规共混方法制备的聚苯硫醚/氮化硼复合绝缘材料的相应性能进行对比。建立聚苯硫醚/氮化硼导热复合绝缘材料的性能与结构的关系，为制备耐高温、高导热聚合物复合绝缘材料奠定实验和理论基础。

中文关键词： 纳米复合材料；纳米电介质；绝缘材料；介电性能；热导率

英文摘要： Dissipating the heat from the electrical equipment and electronic devices is important to improve their performance, to increase their reliability and to prolong their lifetime. The traditional polymer insulating materials have low thermal conductivities and thus are the bottleneck of the heat-dissipation in the electrical equipment and electronic devices. The good way to resolve this problem is to develop electrically insulating but thermally conductive polymer composites with high thermal durability and processability. In this project, by using surface-modified boron nitride nanotubes (nanospheres) as fillers and using the surface-initiated in situ polymerization technique (i.e., introducing the precursors of polyphenylene sulfide onto the surface of boron nitride nanoparticles), we plan to prepare electrically insulating but thermally conductive polyphenylene sulfide/boron nitride composites with high thermal durability and processability. We plan to control the ratio of polyphenylene sulfide to boron nitride in the composites and to control the chain length, the degree of branching and the state of aggregation of polyphenylene sulfide. We will perform the comparative study on the dielectric and thermal properties of the polyphenylene sulfide/boron nitride composites prepared by in situ polymerization technique and the traditional compounding methods. The final aim of this project is to reveal the structure-property relationship of the polyphenylene sulfide/boron nitride composites. The results of this research will provide theoretical knowledge and experimental guide to develop electrically insulating but thermally conductive polymer composite with high thermal durability and processability.

英文关键词： Nanocomposites;Nanodielectrics;Insulating materials;Dielectric property;Thermal conductivity