| HDPE/EPDM/CB复合物的PTC效应 |
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| 引用本文： | 赫秀娟,陈欣方,王丽杰,刘志城. HDPE/EPDM/CB复合物的PTC效应[J]. 高等学校化学学报, 2001, 22(1): 163-165 |
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| 作者姓名： | 赫秀娟 陈欣方 王丽杰 刘志城 |
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| 作者单位： | 1. 吉林大学材料科学系,沈阳化工学院材料科学与工程系,
2. 吉林大学材料科学系, |
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| 摘 要： | 聚合物正温度系数 (PTC)材料 ,是由聚合物基体与炭黑、碳纤维、金属粉末等导电填料共混而成的一种功能导电复合材料 ,其特点是 :当温度升高时 ,在聚合物结晶熔点附近 ,材料的电阻率随温度升高急剧增加 ,可发生几个数量级的突跃 .聚合物 PTC材料可用作自限温加热器、过电流保护器、传感器等 ,有广阔的发展前景 .目前对聚合物 PTC材料的研究主要以聚乙烯 [1～ 5]、乙烯 -醋酸乙烯酯共聚物[6] 、偏氟乙烯 [7] 等单一组分聚合物作为基体材料 .本文研究了以高密度聚乙烯 (HDPE) /三元乙丙胶(EPDM)共混物为基体材料的炭黑 (CB)导电复合材…
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| 关 键 词： | 导电聚合物 正温度系数效应 高密度聚乙烯 三元乙丙橡胶 |
| 文章编号： | 0251-0790(2001)01-0163-03 |
| 修稿时间： | 1999-12-07 |
PTC Effect in HDPE/EPDM/CB Composites |
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| HE Xiu-Juan,,WANG Li-Jie,LIU Zhi-Cheng,CHEN Xin-Fang. PTC Effect in HDPE/EPDM/CB Composites[J]. Chemical Research In Chinese Universities, 2001, 22(1): 163-165 |
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| Authors: | HE Xiu-Juan WANG Li-Jie LIU Zhi-Cheng CHEN Xin-Fang |
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| Affiliation: | HE Xiu-Juan~1,2,WANG Li-Jie~2,LIU Zhi-Cheng~2,CHEN Xin-Fang~2 |
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| Abstract: | Polymer positive temperature coefficient(PTC) material comprising conductive particles, e.g. carbon black(CB), dispersed in polymer matrix is suitable for use as electrical devices such as circuit overcurrent protection device, self-regulation heaters, sensors, etc.. In this paper, the PTC effect of carbon black filled polyethylene and ethylene-propylene-diene terpolymer blends was studied. Effects of raw material ratio and type of carbon black were investigated. The distribution of CB in polymer matrix and the function of crystallites on PTC effect were discussed. |
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| Keywords: | Conductive polymer PTC effect HDPE EPDM |
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