石墨化温度对多孔碳微球/石蜡复合相变热界面材料性能的影响(英文)  

Effect of Graphitization Temperature on the Performance of Porous Carbon Microspheres/Paraffin Composite Phase Change Thermal Interface Materials

作　　者：曹志华[1] 徐益涛 史剑[1] 吴晓琳[1] 符显珠[1] 孙蓉[1] 袁铭辉[2] 汪正平[3] 

机构地区：[1]中国科学院深圳先进技术研究院深圳电子封装材料工程实验室,深圳518055 [2]香港科技大学机械与航空系,香港999077 [3]香港中文大学,香港999077

出　　处：《集成技术》2014年第6期29-35,共7页Journal of Integration Technology

基　　金：Guangdong Innovative Research Team Program(2011D052);Shenzhen Peacock Pragram(KYPT20121228160843692);Shenzhen Electronic Packaging Materials(深发改【2012】372号)

摘　　要：文章利用葡萄糖水热法合成炭微球,并用氢氧化钾进行烧结处理,得到多孔结构的炭微球。在以硝酸铁为催化剂的条件下,对多孔炭微球进行不同温度下的石墨化处理,利用SEM、XRD、FTIR和BET对材料进行了表征。结果表明,炭微球表现出了良好的球形形貌、丰富的孔结构及大的比表面积。炭微球在经过1500℃处理后,其石墨化程度达90%。通过对石蜡进行物理吸附,制备了多孔石墨化炭微球/石蜡相变复合材料并用作热界面材料,其热导率随石墨化温度的增加而增加。Graphitized porous carbon microspheres/paraffin composite phase change materials were prepared which＆amp;nbsp;could be used for the thermal management. KOH was introduced to help carbon microspheres to form the porous structure. The porous carbon microspheres exhibited good sphericity, abundant pores and large surface area, which would be more convenient to absorb the paraffin. The porous carbon microspheres were treated under different temperatures using Fe（NO3）3 as catalyst to investigate the degree of graphitization. The graphitization temperature played an important role in improving the thermal conductivity of the phase change composite.

关 键 词：多孔炭微球 石墨化 相变 热界面材料 石蜡 

分 类 号：TB332[一般工业技术—材料科学与工程]