| Ba2Ti9O20/PTFE复合材料的组织及力学性能 |
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| 引用本文： | 王亚明%贾德昌%周玉%雷廷权.Ba2Ti9O20/PTFE复合材料的组织及力学性能[J].宇航材料工艺,2002,32(4):32-35,50. |
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| 作者姓名： | 王亚明%贾德昌%周玉%雷廷权 |
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| 作者单位： | 哈尔滨工业大学材料科学与工程学院,哈尔滨,150001 |
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| 摘 要： | 采用类似于粉末冶金工艺制备了Ba2Ti9O20/PTFE高频基片复合材料，通过DSC研究PTFE的结晶行为，SEM及三点弯曲法分析了组织结构特征及力学性能。结果表明。Ba2Ti9O20的加入提高了PTFE的结晶温度，其粒子均匀分散在PTFE树脂基体中，随其含量的增加，复合材料的抗弯强度，弹性模量单调升高，当其含量达到30％，（体积分数）时两项性能均达到峰值，分别为16．4MPa,4.6GPa。
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| 关 键 词： | Ba2Ti9O20／PTFE 复合材料 组织结构 力学性能 高频基片材料 |
Microstructure and Mechanical Properties of Ba2Ti9O20/PTFE Composite |
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| Wang Yaming,Jia Dechang,Zhou Yu,Lei Tingquan.Microstructure and Mechanical Properties of Ba2Ti9O20/PTFE Composite[J].Aerospace Materials & Technology,2002,32(4):32-35,50. |
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| Authors: | Wang Yaming Jia Dechang Zhou Yu Lei Tingquan |
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| Abstract: | PTFE based composites reinforcd by fine microwave dielectric ceramic Ba 2Ti 9O 20 have been prepared using power metallurgy technology. The crystallization behavior of PTFE, microstructure and mechanical properties of the composite were investigated using DSC, SEM and three point bending methods respectively. The results indicate: addition of Ba 2Ti 9O 20 ceramic particle elevated the crystallization temperature of PTFE,Ba 2Ti 9O 20 ceramic particle was uniformly dispersed within PTFE matrix. As Ba 2Ti 9O 20 content increased, the flexural strength and elastic modulus of the composite increased and reached the maximum values, 16.4 MPa, 4.6 GPa, respectively in 30vol% Ba 2Ti 9O 20 /PTFE. |
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| Keywords: | Ba 2Ti 9O 20 /PTFE composite Microstructure Mechanical properties |
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