| 片状Al2O3对Al2O3/FEP复合材料热导率的影响 |
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| 引用本文： | 乔梁,赵洪强,郑精武,姜力强.片状Al2O3对Al2O3/FEP复合材料热导率的影响[J].复合材料学报,2009,26(6):37-41. |
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| 作者姓名： | 乔梁 赵洪强 郑精武 姜力强 |
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| 作者单位： | 浙江工业大学化学工程与材料学院,杭州,310014 |
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| 基金项目： | 浙江省科技计划重点项目 |
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| 摘 要： | 通过混炼工艺制备了片状Al2O3填充聚全氟乙丙烯(FEP)复合材料，以颗粒状Al2O3为对比样品，研究了片状Al2O3形状和尺寸对 FEP基复合材料热导率的影响，利用SEM观察了FEP基复合材料的微观形貌。结果表明：在低填充量下，Al2O3颗粒在FEP基体中呈“海岛”状分布，没有形成连续的导热网链，但其热导率明显提高；复合材料拉伸强度与断裂伸长率随Al2O3含量的增加而减小；低填充量时复合材料热导率的提高主要来自Al2O3的微细片状结构，这种微细片状结构一方面提高了有效导热路径，另一方面增加了颗粒与基体之间接触面积，因此有利于热导率的提高。
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| 关 键 词： | 聚全氟乙丙烯 片状Al2O3 热导率 导热机制 伸长率 |
| 收稿时间： | 2008-10-20 |
| 修稿时间： | 2009-04-07 |
Effects of alumina platelets on thermal conductivity of Al_2O_3/FEP composite |
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| QIAO Liang,ZHAO Hongqiang,ZHENG Jingwu,JIANG Liqiang.Effects of alumina platelets on thermal conductivity of Al_2O_3/FEP composite[J].Acta Materiae Compositae Sinica,2009,26(6):37-41. |
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| Authors: | QIAO Liang ZHAO Hongqiang ZHENG Jingwu JIANG Liqiang |
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| Affiliation: | (College of Chemical Engineering and Materials Science, Zhejiang University of Technology, Hangzhou 310014, China) |
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| Abstract: | FEP-based composites filled with alumina platelets were prepared by the physical blending method.The thermal conductivity and elongation of the composites containing Al2O3 platelets were studied in comparison with Al2O3 particles as filler.The microstructure of the composites was also observed by SEM.The results show that the Al2O3 fillers with low mass fractions display an island distribution in the FEP matrix and cannot form the continuous thermal conduction chains.However,the thermal conductivities of th... |
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| Keywords: | FEP Al_2O_3 platelet thermal conductivity heat transfer mechanism elongation |
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