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�������պ����ѧѧ�� 2007, Vol. 33 Issue (08) :991-993    DOI:
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Effect of nuclear radiation on dielectric properties of wave-transmitting materials
Gong Zhaohe, Liu Jianhua*
School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

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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�kkGy in air, the dielectric loss and dielectric permittivity of materials were measured using wave-guide method at 10�kGHz. 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) .
Keywords�� nuclear radiation   wave transmitting   dielectric properties   aging of materials     
Received 2006-10-20;
About author: ���׺�(1967��),��,ɽ��۩����,��ʿ��,gzh_beihang@126.com.
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���׺�, ������.�˷����͸�����Ͻ������Ӱ��[J]  �������պ����ѧѧ��, 2007,V33(08): 991-993
Gong Zhaohe, Liu Jianhua.Effect of nuclear radiation on dielectric properties of wave-transmitting materials[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2007,V33(08): 991-993
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