高级检索

    宋义虎, 王浩江, 等. 高密度聚乙烯/石墨导电复合物的PTC行为及其热循环稳定性[J]. 功能高分子学报, 2001, 14(1): 39-44.
    引用本文: 宋义虎, 王浩江, 等. 高密度聚乙烯/石墨导电复合物的PTC行为及其热循环稳定性[J]. 功能高分子学报, 2001, 14(1): 39-44.
    PTC Behavior and its Stability for High Density Polyethylene/Graphite Composites[J]. Journal of Functional Polymers, 2001, 14(1): 39-44.
    Citation: PTC Behavior and its Stability for High Density Polyethylene/Graphite Composites[J]. Journal of Functional Polymers, 2001, 14(1): 39-44.

    高密度聚乙烯/石墨导电复合物的PTC行为及其热循环稳定性

    PTC Behavior and its Stability for High Density Polyethylene/Graphite Composites

    • 摘要: 研究了高密度乙烯/石墨导电复合物的PTC行为及其影响因素,揭示了内应力随温度升高而松驰对PTC效应的贡献。复合物的导电性能与PTC行为是电导网络的总体结构及其随温度的变化所决定的,与材料组分性质以及各组分之间的相互作用关系不大。当环境温度趋于基体熔点时,复合物热学性质的变化造成导电网络的大规模破坏,是PTC行为产生的根源。热处理等物理手段可改变导电网络的微观结构,但不影响PTC行为赖以产生的物理机制,也不能有效改善PTC行为的热循环稳定性。

       

      Abstract: The PTC behavior and its stability of high-density polyethylene/graphite (HDPE/GP) composites were studied. The results show that the internal stress is one of the factors which result in the PTC transition and influence the PTC behavior. The conduction a

       

    /

    返回文章
    返回