The Resistivity Response of an Anisotropically Conductive Polymer Composite with in-situ Conductive Microfibrils During Cooling
The Resistivity Response of an Anisotropically Conductive Polymer Composite with in-situ Conductive Microfibrils During Cooling
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DOI：
10.1080/03602559.2011.593087
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发表时间：
2011-11
影响因子：
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通讯作者：
Yi-Chuan Zhang;Yanfei Huang;K. Dai;H. Pang;Cheng Chen;Zhong‐Ming Li
中科院分区：
文献类型：
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作者：
Yi-Chuan Zhang;Yanfei Huang;K. Dai;H. Pang;Cheng Chen;Zhong‐Ming Li
研究了在取向聚对苯二甲酸乙二醇酯（PET）微纤表面选择性地分布有炭黑（CB）颗粒的各向异性导电聚合物复合材料（ACPC）在从180°C沿平行和垂直方向冷却时的电阻率响应。在聚乙烯（PE）基体的结晶温度附近，ACPC表现出冷却正温度系数（PTC）。随着CB负载量的增加，冷却PTC效应逐渐降低。当ACPC经历等温退火时，排列的微纤维无序形成更多的导电通路。随着退火时间的增加，两个方向上的冷却PTC效应都逐渐衰减。
The resistivity response of anisotropically conductive polymer composite (ACPC) with carbon black (CB) particles selectively localizing at the surfaces of aligned polyethylene terephthalate (PET) microfibrils was investigated during cooling from 180°C in the parallel and perpendicular directions. The ACPC exhibited a cooling positive temperature coefficient (PTC) around the crystallization temperature of polyethylene (PE) matrix. With the increase of CB loading, the cooling PTC effect decreased gradually. When the ACPC experienced isothermal annealing, the aligned microfibrils disordered to form more conductive pathways. The increase of annealing time caused the gradual attenuation of the cooling PTC effect in both directions.