碳纳米管改性苯基硅橡胶的性能研究
毕业论文关键词： 硅橡胶；碳纳米管；导电；热导率；介电常数
Study the properties of carbon nanotube modifed phenyl silicone rubber
Abstract：This article select excellent multi-walled carbon nanotubes as a function of the filler, based on its modification, which was prepared by solution blending the carbon nanotube/silicone rubber composites, on the tensile properties of the conductive, dielectric, pervious to light, and the influence factors have been studied in detail. Through the study on surface modification of carbon nanotubes, found that silane coupling agent KH550 is carbon nanotube/silicone rubber composite material is a kind of simple and effective modifying agent, can be directly with the original organic groups in the surface of carbon nanotubes in chemical reactions, to maintain the original properties of carbon nanotubes, improves the cohesive strength between carbon nanotubes and silicone rubber, to make the tubes evenly dispersed in the matrix, improve the mechanical properties of the composite material. At the same time, prepared by solution blending method can make the packing completely evenly dispersed, uniform of modified carbon nanotube/silicone rubber composites. In this paper, through the analysis of the samples, with the increase of the content of carbon nanotubes composites dielectric constant increases, the volume resistivity decreased, light transmittance, will, under the tensile strength increased first and then increased thermal conductivity coefficient change in performance.
Key words： silicone rubber；carbon nanotube；ultraviolet aging resistance；heat conductivity；dielectric constant
目录
1 绪论 1
1.1 LED封装材料的发展历史 1
1.2 碳纳米管改性苯基硅橡胶的概述 1
1.2.1 碳纳米管概述 1
1.2.2 碳纳米管改性硅橡胶的原理 2
1.3 多壁碳纳米管的表面修饰 3
1.4 碳纳米管改性硅橡胶的方法 3
1.4.1 溶液共混法 4
1.4.2 机械混炼法 5
1.4.3 喷雾干燥法 5
1.5 碳纳米管/硅橡胶的性能 6
1.5.1 良好的物理机械性能 6
1.5.2 电学性能 6
1.6 课题研究内容 6
1.7 课题研究的目的和意义 7
1.7.1 研究目的 7
1.7.2 研究意义 7
2 实验部分 9
2.1 实验原料 9
2.2 实验仪器 9
2.3 实验配方 10
2.4 实验过程 10
2.4.1 碳纳米管溶液溶剂确定 10
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