北京航空航天大学学报 ›› 2007, Vol. 33 ›› Issue (08): 991-993.

• 论文 • 上一篇    下一篇

核辐射对透波材料介电性能影响

宫兆合, 刘建华   

  1. 北京航空航天大学 材料科学与工程学院, 北京 100083
  • 收稿日期:2006-10-20 出版日期:2007-08-31 发布日期:2010-09-17
  • 作者简介:宫兆合(1967-),男,山东郓城人,博士后,gzh_beihang@126.com.

Effect of nuclear radiation on dielectric properties of wave-transmitting materials

Gong Zhaohe, Liu Jianhua   

  1. School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China
  • Received:2006-10-20 Online:2007-08-31 Published:2010-09-17

摘要: 用加速老化试验的方法,在有氧存在的条件下,研究了TDE-85环氧树脂/E玻璃纤维体系、4501A双马来酰亚胺树脂/D3W玻璃纤维体系2种透波材料介电性能受核辐射影响的规律.用60Co辐射源在辐射量为50~800kGy范围内对样件进行辐射,用波导法测试样件的介电常数和介电损耗,测试频率为10GHz.结果发现2种体系透波材料介电性能受核辐射的影响较小,且后者比前者具有更好的抗辐射稳定性.同时利用IR,TGA等手段研究了材料介电性能变化的原因.

Abstract: The effect of nuclear radiation on dielectric properties of epoxy TDE-85/glass fiber E composite and bismaleimide 4501A/glass fiber D3W composite was studied in oxygen ambience using accelerated aging mothed. After samples were irradiated by 60Co -rays at a range of dose 50~800kGy in air, the dielectric loss and dielectric permittivity of materials were measured using wave-guide method at 10GHz. It was found that the dielectric loss and dielectric permittivity increases with radiation dose, but increasing is not much, and the antiradiation property of 4501A/glass fiber D3W composite is better than that of TDE-85/glass fiber E composite. The change reasons of the dielectric property were analyzed using infrared (IR) and dynamic thermo gravimetric analysis (TGA) .

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