芳纶柔性石墨散热膜的制备及导热性能研究  

Preparation and Thermal Conductivity of Flexible Graphite Heat Dissipation Film Prepared from Aramid Film

作　　者：王振廷[1] 王辉 尹吉勇 陈丽丽 刘爱莲[1] WANG Zhen-ting;WANG Hui;YIN Ji-yong;CHEN Li-li;LIU Ai-lian(Heilongjiang University of Science&Technology,Heilongjiang Harbin 150022,China)

机构地区：[1]黑龙江科技大学,黑龙江哈尔滨150022

出　　处：《广州化工》2023年第3期112-116,共5页GuangZhou Chemical Industry

基　　金：黑龙江省石墨烯应用研究重点实验室(ZY20B12);2022年度黑龙江省省属高等学校基本科研业务费项目(2022-KYYWF-0528,2022-KYYWF-0535)。

摘　　要：以对苯二胺(PPD)和对苯二甲酰氯(TPC)作为原料,采用正戊烷缩聚法制备对位芳纶,对芳纶膜进行预氧化处理、碳化处理、石墨化处理和压延处理制备石墨膜。研究不同PPD与TPC摩尔比及不同碳化温度对制得的石墨膜的导电性能和导热性能的影响。研究表明:当TPC和PPD的摩尔比为1∶1,预氧化温度为262℃,碳化温度为1000℃,石墨化温度为2800℃,材料厚度为0.15 mm时,石墨膜的导电率达到最大值(3819.8 S/cm),面内热扩散系数达到最优值(542.086 mm^(2)/s)。得到一种新型具有优异导电、导热性能的基于人工合成高导热柔性石墨散热膜。Using p-phenylenediamine(PPD)and terephthaloyl chloride(TPC)as raw materials,poly-p-phenylene terephthamide was prepared by n-pentane polycondensation,and graphite film was prepared by pre-oxidation,carbonization,graphitization and calendering of the aramid film.The influence of different molar-ratios of PPD and TPC and different carbonization temperatures on the electrical conductivity and thermal conductivity of the graphite film was studied.The results showed that when the molar ratio of TPC and PPD was equal to 1∶1,the pre-oxidation temperature was 262℃,the carbonization temperature was 1000℃,and the graphitization temperature was 2800℃,and the material thickness was 0.15 mm,the electrical conductivity of graphite film reached the maximum value(3819.8 S/cm),and the in-plane thermal diffusion coefficient reached the optimal value(542.086 mm^(2)/s).A new type of heat dissipation film based on artificial synthetic high thermal conductivity flexible graphite with excellent electrical and thermal conductivity was obtained.

关 键 词：芳纶石墨膜 正戊烷缩聚法 预氧化 导热性能 

分 类 号：TQ317.3[化学工程—高聚物工业]