| 一类新型PTC复合材料的制备及性能 |
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| 引用本文： | 杜伟坊,杜海清.一类新型PTC复合材料的制备及性能[J].高等学校化学学报,1994,15(3):470-471. |
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| 作者姓名： | 杜伟坊 杜海清 |
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| 作者单位： | 湖南大学材料科学及应用化学研究所, 长沙, 410082 |
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| 摘 要： | 一类新型ＰＴＣ复合材料的制备及性能杜伟坊，杜海清（湖南大学材料科学及应用化学研究所，长沙，４１００８２）关键词正温度系数，聚乙烯，ＹＢａ_２Ｃｕ_３Ｏ_（７－ｘ）具有正温度系数（ＰＴＣ）的材料在其转化温度附近具有电阻率大幅度上升的特点，因而在温度检测与?..
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| 关 键 词： | 正温度系数 聚乙烯 YBa2Cu3O7-x |
| 收稿时间： | 1993-07-10 |
Preparation and Properties of a New Series of PTC Composites |
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| DU Wei-Fang, DU Hai-Qing.Preparation and Properties of a New Series of PTC Composites[J].Chemical Research In Chinese Universities,1994,15(3):470-471. |
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| Authors: | DU Wei-Fang DU Hai-Qing |
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| Institution: | Institute of Materials Science and Applied Chemistry, Hunan University, Changsha, 410082 |
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| Abstract: | A new series of composites exhibiting a large positive temperature coefficient (PTC)of resistivity effect have been prepared by incorporating YBa_2Cu_3O_(7-x) particles into polyethylene matrix. The PTC effect of YBa_2Cu_3O_(7-x)/polyethylene composites, which was caused by the volume effect of polyethylene, was maximum with 10 orders of magnitude at specimen with 30 vol% YBa_2Cu_3O_(7-x). The temperature at which resistivity increases rapidly depends on the melting point of polyethylene. |
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| Keywords: | PTC Polyethylene YBa_2Cu_3O_(7-x) |
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