| 氮化硼/碳纳米管对乙烯基聚二甲基硅氧烷导热性能影响的研究 |
| Study of the Influence on Thermal Conductivity of Vinyl Polydimethylsiloxane with borazon/carbon nano-tube |
| 投稿时间：2015-01-22 修订日期：2015-01-22 |
| DOI： |
| 中文关键词: 导热硅橡胶 氮化硼 碳纳米管 填料网络 |
| 英文关键词: thermal conductive silicone rubber borazon carbon nano tube filler network |
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| 中文摘要: |
| 分别使用氮化硼(BN)和氮化硼/碳纳米管(CNTs)复配物质制备了导热乙烯基聚二甲基硅氧烷材料(PDMS)。采用导热仪、扫描电镜和动态流变测试仪对材料进行观察和分析。研究表明：随着BN和CNTs加入量的增加，材料的导热系数和热扩散系数逐渐增加；BN含量足够多时，能够形成导热通路进而促进填料网络的形成；CNTs在填料中将BN粒子之间形成的平面结构连接起来，从而形成三维网络结构；填料越多形成的导热网络越强；BN在网络中起主要作用，CNTs起到辅助增强的作用。 |
| 英文摘要: |
| The thermal conductive vinyl polydimethylsiloxane (PDMS) is prepared with boron nitride (BN) and boron nitride/ carbon nano tube (CNTs). Using thermal analyzer, dynamic rheological test and scanning electron microscopy to observe and analyze the material. Studies have shown that BN and CNTs content increases, thermal conductivity and thermal diffusivity of materials increased. When BN content is large enough to form a thermally conductive path is thus promoting the formation of filler network. CNTs formed between the planar structures of the BN particles are connected to form a three-dimensional network structure. The more filler the stronger the thermally conductive filler network formed. BN plays a major role in the network, and CNTs play a supporting role enhancement. |
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