大连理工大学学报2017，Vol.57Issue(6)：638-643,6.DOI:10.7511/dllgxb201706013
高压下碳纳米管阵列与金属接触热阻研究
Study of thermal contact resistance between CNT array and metal under high pressure
摘要
Abstract
Due to its high axial thermal conductivity,carbon nanotube (CNT)array based thermal interface material has attracted much attention in recent years.However,the large thermal contact resistance between CNT array and metal,usually more than 10 mm2 · K/W,is a bottleneck for its practical application.At present,by chemical bonding and other methods,a small value as 0.6 mm2 ·K/W has been obtained,but these methods need to sacrifice high temperature characteristics of CNT.To solve this problem,the thermal contact resistance between CNT array and metal is reduced by using pressure.For CNT array with a height of 800 μm,thermal contact resistance between CNT array and Au is measured with a value between 1.90 and 3.51 mm2 ·K/W,under a relative high pressure of 1.49 MPa, which is closed to the result of chemical bonding method and far less than thermal resistance under a small pressure.It provides a new way to further reduce the thermal contact resistance of CNT.关键词
热界面材料/碳纳米管阵列/接触热阻/瞬态热反射测试Key words
thermal interface material/carbon nanotube (CNT)array/thermal contact resistance/transient thermo-reflectance measurement分类
能源科技引用本文复制引用
黄正兴,王志刚,张鑫..高压下碳纳米管阵列与金属接触热阻研究[J].大连理工大学学报,2017,57(6):638-643,6.基金项目
国家自然科学基金资助项目(61131004) （61131004）
辽宁省自然科学基金资助项目(201602153). （201602153）
