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| 导电炭黑填充硅橡胶的电阻温度系数 | |
| 引用本文： | 蒋红生,黄英,杨庆华,高峰,刘平.导电炭黑填充硅橡胶的电阻温度系数[J].功能材料,2012,43(3):383-386. |
| 作者姓名： | 蒋红生 黄英 杨庆华 高峰 刘平 |
| 作者单位： | 1. 合肥工业大学电子科学与应用物理系,安徽合肥,230009 2. 合肥工业大学电子科学与应用物理系,安徽合肥230009 中国科学院合肥智能机械研究所,安徽合肥230031 3. 中国科学院合肥智能机械研究所,安徽合肥230031 中国科学技术大学自动化系,安徽合肥230027 |
| 基金项目： | 国家自然科学基金资助项目，国家高技术研究发展计划(863计划)资助项目 |
| 摘 要： | 以炭黑(CB3100)为导电相,硅橡胶为基质制备导电复合材料。研究导电橡胶中炭黑质量分数对电阻温度系数的影响,并用填料对电阻温度系数的影响。以隧道效应理论为基础,给出了导电炭黑填充橡胶的电阻温度系数计算模型,结合实验得到温度对导电炭黑/硅橡胶电阻温度系数的影响主要体现在对其电阻率的影响;基体的体积热膨胀提高复合材料的电阻率,提高了正电阻温度系数;炭黑粒子间的隧道效应降低复合材料的电阻率,增强了负电阻温度系数;在炭黑/硅橡胶中加入少量碳纳米管,利用碳纳米管和炭黑的协同补强效应,使复合材料的导电性和稳定性提高。 |
| 关 键 词： | 导电橡胶 隧道效应 电阻温度系数 碳纳米管 协同效应 |
Temperature coefficient of resistance based on conductive rubber filled by carbon black |
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| JIANG Hong-sheng,HUANG Ying,YANG Qing-hua,GAO Feng,LIU Ping.Temperature coefficient of resistance based on conductive rubber filled by carbon black[J].Journal of Functional Materials,2012,43(3):383-386. | |
| Authors: | JIANG Hong-sheng HUANG Ying YANG Qing-hua GAO Feng LIU Ping |
| Affiliation: | 2,3(1.School of Electronic Science & Applied Physics,Hefei University of Technology,Hefei 230009,China; 2.Institute of Intelligence Machines,Chinese Academy of Sciences,Hefei 230031,China; 3.Department of Automation,University of Science and Technology of China,Hefei 230027,China) |
| Abstract: | Conductive composites are consisting of carbon particles(CB3100) and silicone rubber matrix.The temperature coefficient of resistance(TCR) based on conductive silicon rubber was analyzed for the dosage of filler,and studied the different filler blend in the conductive composites.Analysis the resistivity calculation model of conductive carbon black/silicone rubber which based on the theory of tunneling,the TCR model has been calculated,combined with experiments: temperature effects the TCR of the conductive carbon black/silicone rubber,by act on resistivity of conductive carbon black/silicone rubber;the volume thermal expansion of matrix increased the resistivity of composites,the positive TCR of conductive composites enhanced;tunnel effect between carbon black particles reduces the resistivity of composite materials,the negative TCR of conductive composites enhanced.By adding a small amount of carbon nanotubes in the carbon black/silicone rubber,due to the synergetic effect of carbon nanotubes and carbon black in a rubber system,conductivity and stability of conductive composites enhanced. |
| Keywords: | conductive rubber tunnel effect temperature coefficient of resistance carbon nanotubes the synergetic effect |
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