...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >Effect of temperature on the electrical properties of copolymer/carbon black mixtures
【24h】

Effect of temperature on the electrical properties of copolymer/carbon black mixtures

机译：温度对共聚物/炭黑混合物电性能的影响

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

This work presents a study of the electrical conductivity of mixtures of carbon black particles in the ethylene butylacrylate copolymer matrix over the temperature range - 120 to 80 °C. The DC conductivity of these mixtures is examined and a positive temperature coefficient in resistivity effect is found for the carbon black concentration above the percolation threshold φ_C (φ_C ≈ 11%). AC electrical measurements in the frequency range 100 Hz to 0.2 MHz have allowed us to identify different mechanisms of the conduction in these composites. The temperature dependence of the dielectric response has been analyzed below the epoxy glass transition temperature, for various carbon concentrations. Jonscher's phenomenological model has been used for modelling the dielectric response of our composite materials. We find that the activation energy is insensitive to the presence of the carbon particles and we conclude that means that the carbon black particles do not interact or only weakly interact with the chain segments of the macromolecules in the copolymer.
机译：这项工作提出了在120至80°C的温度范围内，炭黑颗粒混合物在乙烯丙烯酸丁酯共聚物基质中的电导率的研究。检查了这些混合物的直流电导率，发现炭黑浓度高于渗滤阈值φ_C（φ_C≈11％）时，电阻率效应的正温度系数为正。在100 Hz至0.2 MHz频率范围内进行交流电测量，使我们能够确定这些复合材料中不同的导电机理。对于各种碳浓度，已经在环氧玻璃化转变温度以下分析了介电响应的温度依赖性。 Jonscher的现象学模型已用于对我们的复合材料的介电响应进行建模。我们发现活化能对碳颗粒的存在不敏感，并得出结论，这意味着碳黑颗粒与共聚物中大分子的链段不相互作用或仅弱相互作用。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号