| 纳米晶NdFeB/PE屏蔽复合材料的制备与力学性能 |
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| 引用本文： | 杨文锋,刘颖,李德安,杨林,李聪.纳米晶NdFeB/PE屏蔽复合材料的制备与力学性能[J].材料工程,2007(10):23-26. |
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| 作者姓名： | 杨文锋 刘颖 李德安 杨林 李聪 |
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| 作者单位： | 1. 四川大学,材料科学与工程学院,成都,610065
2. 中国核动力研究设计院,核燃料及材料国家重点实验室,成都,610041 |
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| 摘 要： | 利用超声波分散、偶联剂对纳米晶NdFeB粉末进行了表面处理,采用熔融共混法制备了NdFeB/PE稀土高分子屏蔽复合材料,对材料的微观结构、力学性能进行了实验研究.结果表明,在充分利用PE本身的强韧性的基础上,最可几孔径为0.5/μm的NdFeB粉末在PE中的体积分数为35%-40%时.对PE的抗拉强度、拉伸模量、硬度能起到增强效果,但对NdFeB/PE复合材料的塑韧性有一定负面影响.对复合材料的拉伸断裂机理分析表明,经过表面处理的NdFeB与PE的界面作用对强度的改善起到了关键作用.
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| 关 键 词： | NdFeB PE 屏蔽复合材料 力学性能 界面作用 |
| 文章编号： | 1001-4381（2007）10-0023-04 |
| 修稿时间： | 2006-10-24 |
Preparation and Mechanical Properties of Nano-crystal NdFeB/PE Shielding Composite |
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| YANG Wen-feng,LIU Ying,LI De-an,YANG Lin,LI Cong.Preparation and Mechanical Properties of Nano-crystal NdFeB/PE Shielding Composite[J].Journal of Materials Engineering,2007(10):23-26. |
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| Authors: | YANG Wen-feng LIU Ying LI De-an YANG Lin LI Cong |
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| Affiliation: | 1 School of Material Science and Engineering,Sichuan University,Chengdu 610065,China;2 National Key Laboratory of Nuclear Fuel and Materials,Nuclear Power Institute of China,Chengdu 610041,China |
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| Abstract: | Ultrasonic dispersion and surface treatment with coupling agents was processed for the submicro-diameter NdFeB.NdFeB/PE rare earth/polymer composite was prepared through melt blending.The microstructure,mechanical properties and shielding effectiveness of the composite were tested.The results indicate that NdFeB can improve the tensile modulus and micro-hardness of PE and when the volume ratio of submicro-diameter NdFeB was 35%-40%,the tensile strength of PE increased too.But in the same time,submicro-diameter NdFeB will reduce the plasticity and toughness of PE.The improvement of tensile strength of the composite came from the interfacial interaction of PE and submicro-diameter NdFeB. |
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| Keywords: | NdFeB PE shielding composite mechanical property interfacial interaction |
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