碳纳米管填充聚合物基导热复合材料的研究进展  

Progress on carbon nanotube filled polymer-based thermal conductive composites

作　　者：石嵩 张传琪 张达 何燕[1,2,3] Song Shi;Chuanqi Zhang;Da Zhang;Yan He(College of Electromechanical Engineering,Qingdao University of Science and Technology,Qingdao 266061,China;Shandong Laboratory for Preparation and Application of High-performance Carbon Materials,Qingdao 266061,China;Shandong Collaborative Innovation Center of Intelligent Green Manufacturing Technology and Equipment,Qingdao 266061,China)

机构地区：[1]青岛科技大学机电工程学院,青岛266061 [2]山东省高性能碳材料制备及应用工程实验室,青岛266061 [3]山东省智能绿色制造技术与装备协同创新中心,青岛266061

出　　处：《科学通报》2022年第30期3531-3545,共15页Chinese Science Bulletin

基　　金：国家自然科学基金(52176076,51676103);山东省泰山学者特聘专家工程经费(ts20190937)资助。

摘　　要：电子器件的集成度不断提高,对相关的热管理系统提出了更高的要求.高导热材料在热管理领域起着重要的作用.高分子聚合物因其轻质、廉价、良好的绝缘性和加工性,已成为制备导热材料的热门选择.在聚合物中填充高导热的无机填料是提高导热性能的有效手段.碳纳米管是一种具有一维管状结构和优异热学性能的碳纳米材料,在填充型导热复合材料中具有广阔的应用前景.本文综述了以碳纳米管为导热填料提升聚合物基复合材料导热性能的可行措施,分析了碳纳米管的本征结构以及在聚合物基体中的分布状态对复合材料导热性能的影响.最后,总结了碳纳米管填充聚合物基复合材料研究中仍需解决的关键问题,并提出了未来研究方向.In the 5G era,the effective thermal management has become more demanding due to the ever-rising integration of electronic devices.High thermal conductivity materials play a crucial role in the field of thermal management,for example,thermal interface materials(TIMs)are used to fill the gap between the electronic chip and the heat sink to improve thermal transfer.In recent years,polymers have become a popular choice for thermal conductive materials because of their light,economical and excellent insulation and processability.To improve the thermal conductivity of materials,inorganic fillers with high thermal conductivity are generally composited with polymers.With the merits of high thermal conductivity,desirable chemical stability,carbon nanotubes(CNTs)are considered to have broad application potential in thermal conductive composites.Simple composition methods failed to increase thermal conductivity of composite materials to expected levels due to the large interfacial thermal resistance between CNTs and polymers and the disorderly distribution of CNTs in polymers.Therefore,reasonable design of polymer composites filled with CNTs is the key to achieving high thermal conductivity.This review mainly introduces the application of CNTs in thermal conductive polymer composites.Based on the existing theoretical research on thermal conductivity of composites and the application of molecular dynamics,more feasible strategies for improving the thermal conductivity of polymer composites filled with CNTs have been proposed.The approaches that improve the thermal conductivity of composites are mainly introduced from three aspects.(1)The intrinsic thermal conductivity of CNTs is an important factor affecting the thermal conductivity of polymer-based composites.CNTs and their macroscopic bulk materials both have excellent thermal conductivity.However,the thermal conductivity test results of the macroscopic materials of CNTs(such as CNTs fibers,arrays,and films)showed that the thermal conductivity of the macroscopic materials

关 键 词：碳纳米管 聚合物 复合材料 导热机理 热导率 

分 类 号：TB332[一般工业技术—材料科学与工程]