| 高密度聚乙烯/多壁碳纳米管和高密度聚乙烯/炭黑导电复合材料阻温特性的研究 |
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| 引用本文： | 李博;季铁正;李佳;莫祥友.高密度聚乙烯/多壁碳纳米管和高密度聚乙烯/炭黑导电复合材料阻温特性的研究[J].中国塑料,2011,25(2):60-64. |
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| 作者姓名： | 李博;季铁正;李佳;莫祥友 |
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| 作者单位： | 西北工业大学 西北工业大学理学院应用化学系 |
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| 摘 要： | 采用溶液法制备了高密度聚乙烯/多壁碳纳米管（PE-HD/MWCNTs）和PE-HD/炭黑(CB)导电复合材料,并研究了该复合材料的阻温特性。结果表明，与PE-HD/CB复合材料相比，PE-HD/MWCNTs复合材料的室温电阻率更低，并且可以具有较高的正温度系数（PTC）强度和较小的负温度系数（NTC）效应，因而具有更加广泛的应用前景。同时通过对PE-HD/MWCNTs复合材料阻温全过程进行分析，发现PTC效应由碳纳米管向晶区扩散及基体体积膨胀效应共同导致，而NTC效应则是由于碳纳米管的热运动形成的相互接触所致，而并非粒子附聚。
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| 关 键 词： | 阻温特性 高密度聚乙烯 多壁碳纳米管 炭黑 导电复合材料 |
| 收稿时间： | 2010-10-27 |
Research on Resistivity-temperature Characteristics of PE-HD/MWCNTs and PE-HD/CB Composites |
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| LI Bo,JI Tiezheng,LI Jia,MO Xiangyou.Research on Resistivity-temperature Characteristics of PE-HD/MWCNTs and PE-HD/CB Composites[J].China Plastics,2011,25(2):60-64. |
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| Authors: | LI Bo JI Tiezheng LI Jia MO Xiangyou |
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| Affiliation: | LI Bo,JI Tiezheng,LI Jia,MO Xiangyou(Department of Applied Chemistry,School of Science,Northwestern Polytechnical University,Xi'an 710129,China) |
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| Abstract: | PE-HD/MWCNTs composties and PE-HD/CB composites were prepared by solution blending and ultrasonic dispersion.It was found that PE-HD/MWCNTs composites possessed lower resistivity at room temperature,higher positive temperature coefficient(PTC) intensity,and lower negative temperature coefficient(NTC) effect,when compared with PE-HD/CB composites.The analysis of the whole resistivity-temperature curve of PE-HD/MWCNTs composites illustrated that the PTC effect was resulted from both the diffusion of MWCNTs to... |
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| Keywords: | high-density polyethylene multi-walled carbon nanotube carbon black conductive composite resistivity-temperature characteristics |
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