High Thermal Conductivity and Mechanical Properties of Nanotube@Cu/Ag@Graphite/Aluminum Composites,Industrial & Engineering Chemistry Research

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High Thermal Conductivity and Mechanical Properties of Nanotube@Cu/Ag@Graphite/Aluminum Composites
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2018-07-31 , DOI: 10.1021/acs.iecr.8b01567
Xiaopeng Han _{1,

2} , Ying Huang _{1,

2} , Qiao Gao _{1,

2} , Meng Yu _{1,

2} , Xuefang Chen _{1,

2}

Affiliation

Weak interfacial bonding and the agglomeration of reinforcements are critical challenges for the expected performance in thermal management materials, hindering the extensive application of aluminum matrix composites. In this work, Cu particles, nanotubes, Ag-coated graphite flakes and films, urea, and starch were mixed together to fabricate porous preforms, which then were infiltrated by vacuum gas pressure at 720 °C. The effects of graphite film thickness on the microstructure and properties of thermal conductivity (TC) and coefficient of thermal expension were investigated. The nanotube@Cu/Ag@graphite/aluminum composites exhibited a high TC of 451 W/mK and excellent bending strength of 74 MPa, which were approximately increased by 48.8% and 126%, respectively, as compared with the samples without graphite film.

中文翻译：

纳米管@铜/银@石墨/铝复合材料的高导热性和力学性能

薄弱的界面粘结和增强材料的团聚是热管理材料预期性能的关键挑战，阻碍了铝基复合材料的广泛应用。在这项工作中，将Cu颗粒，纳米管，涂有Ag的石墨薄片和薄膜，尿素和淀粉混合在一起，制成多孔的预成型坯，然后在720°C的真空气压下将其渗透。研究了石墨膜厚度对热导率（TC）的微观结构和性能以及热膨胀系数的影响。与没有石墨膜的样品相比，纳米管/铜/银/石墨/铝复合材料显示出451 W / mK的高TC和74 MPa的优异弯曲强度，分别分别增加了48.8％和126％。

更新日期：2018-07-31

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