定向碳纳米管/天然橡胶复合材料导热性能的研究

• 作 者: 马连湘 冯娟娟 高佼 吴桂龙 何燕 徐瑾
• 机 构: 青岛科技大学机电工程学院,
• 出 处: 工程热物理学报
• 发表日期: 2014年09期
• 关键词: A-MWNTs natural rubber thermal conductivity polynomial fitting

本文采用溶液共混技术将定向碳纳米管(A-MWNTs)填充到天然橡胶中,得到A-MWNTs填充的天然橡胶复合材料。观察了A-MWNTs在天然橡胶基体中的分散情况,研究了A-MWNTs对天然橡胶复合材料导热性能的影响,并进行多项式拟合分析。研究表明:A-MWNTs在与天然橡胶溶液共混过程中经超声波振荡和搅拌后会被部分打乱。但是在微束单元内是定向的,在整体上呈非定向分布。随着A-MWNTs填充量的增加,复合材料的导热率快速增大。通过对导热率数据进行多项式拟合,以此为研究复合材料导热性能提供可靠的技术途径。结果表明:拟合曲线可以较为准确地预测复合材料导热率的变化趋势。

In this paper, A-MWNTs filled natural rubber composites were filled with oriented carbon nanotubes (A-MWNTs) into natural rubber by solution blending technique. The distribution of A-MWNTs in natural rubber matrix was observed. The effect of A-MWNTs on the thermal conductivity of natural rubber composites was investigated and polynomial fitting analysis was performed. The results show that A-MWNTs will be partially disrupted by ultrasonic vibration and stirring during blending with natural rubber solution. But orientated within the microbeam unit, being non-directional as a whole. With the increase of A-MWNTs loading, the thermal conductivity of composites increases rapidly. Through polynomial fitting of the thermal conductivity data, we can provide a reliable technical way to study the thermal conductivity of composite materials. The results show that the fitted curve can predict the thermal conductivity of composites more accurately.