碳纳米管-膨胀石墨/环氧树脂复合材料的导热性能  

Thermal Conductivity of Carbon Nanotubes-Expanded Graphite/Epoxy Resin Composite

作　　者：刘艳杰 陆江银[1] 李玲 武晓峰[2] 崔彦斌[2] Yanjie LIU;Jiangyin LU;Ling LI;Xiaofeng WU;Yanbin CUI(Key Laboratory of Oil ＆ Gas Fine Chemicals, Ministry of Education, College of Chemistry and Chemical Engineering, Xinjiang University, Urumqi, Xinjiang 830046, China;State Key Lab of Multi-phase Complex System, Institute of Process Engineering. Chinese Academy of Sciences. Beijing 100190, China)

机构地区：[1]新疆大学化学化工学院,石油天然气精细化工教育部重点实验室,新疆乌鲁木齐830046 [2]中国科学院过程工程研究所多相复杂系统国家重点实验室,北京100190

出　　处：《过程工程学报》2018年第3期563-569,共7页The Chinese Journal of Process Engineering

基　　金：中国科学院过程工程研究所介尺度科学中心创新基金资助项目(编号:COM2016A003)

摘　　要：在环氧树脂中添加多壁碳纳米管和膨胀石墨作为填料,以提高环氧树脂的导热性能.结果表明,添加0.5wt%多壁碳纳米管时,环氧树脂的最佳导热系数为0.3448 W/（m×K）,比不添加时提高30%;添加0.75wt%羧基改性多壁碳纳米管时,环氧树脂的最佳导热系数为0.3813 W/（m·K）,比添不加时提高40%;同时添加多壁碳纳米管和膨胀石墨后,环氧树脂导热系数可进一步提高到0.4039 W/（m·K）,表明在环氧树脂中添加混合填料,二者可在环氧树脂中形成有效的导热网络,能进一步提高聚合物的导热性能.Multi-walled carbon nanotubes（MWCNTs） and expanded graphite were added into epoxy resin to improve the thermal conductivity. The results indicated that the maximum thermal conductivity of composite was 0.344 8 W/（m·K） by adding 0.5 wt% MWCNTs, which was improved by 30% than epoxy resin. When 0.75 wt% MWCNTs-COOH was added into epoxy resin, the maximum thermal conductivity of composite was 0.381 3 W/（m·K）, which was improved by 40% than epoxy resin. The thermal conductivity of epoxy resin could reach up to 0.403 9 W/（m·K） by adding hybrid filler（MWCNTs-COOH and expanded graphite）. A thermally conductive network was formed in epoxy resin when MWCNTs-COOH and expanded graphite were added into epoxy resin and the thermal conductivity of polymer could be further improved.

关 键 词：聚合物 多壁碳纳米管 膨胀石墨 复合材料 导热系数 

分 类 号：TB332[一般工业技术—材料科学与工程]