PERFORMANCE CHARACTERISATION OF SILANE-TREATED MWCNT/COPPER WIRE-MESH REINFORCED EPOXYTWO-PHASE THERMAL INTERFACECOMPOSITE MATERIAL

[摘要] A two phase epoxy thermal interface composite material was prepared and characterized for their thermal conductivity, electrical insulation and mechanical properties. The principal aim of this work is to produce high performance thermal interface material having two phase structure with silane-treated copper micro wire-mesh and MWCNTs. The phase-I contains copper wire-mesh of 70 vol.% and MWCNTs of 0.5 & 1.0 vol.%, whereas phase-II contain only MWCNTs of 0.5 & 1.0 vol.%. The dielectric constant of two phase thermal interface material measures 3.2, which is almost equal to epoxy resin. But the maximum thermal conductivity measures 0.56 W/mK for 1.0 vol.% of surface-treated MWCNTs dispersed (phase 2) epoxy composite. The silane-treated reinforcements in epoxy matrix keep the composite mechanically stronger and tougher than as-received one. The TEM images show uniform dispersion of silane-treated MWCNTs and network formation in epoxy matrix.

[学科分类] 生物技术

[关键词] Two-phase PMC;TIM;MWCNTs;Copper wire-mesh;Silane-treatment