伽玛线辐射对环氧树脂介电性能的影响
首发时间:2014-01-02
摘要:环氧树脂作为绝缘材料已广泛应用于核辐射环境下的电气电子设备。在高能辐射作用下,材料的化学结构发生改变,影响其介电性能,对设备安全构成威胁。论文选取薄板状环氧树脂为试样,采用钴60伽玛射线源以10 kGy/h的剂量率对其进行辐射,总辐射量分别为100 kGy和1000 kGy。采用高精度LCR仪测量试样的频域介电谱,分析总辐射量对材料介电性能的影响。结果表明,随着总辐射量从0 kGy 增大至1000 kGy,试样的相对介电常数和介质损耗角正切值均呈现先减小后增大的趋势。论文认为,伽玛线辐射作用下,试样发生的交联、降解反应结果,是导致其介电性能改变的根本原因。
关键词: 绝缘技术 环氧树脂 伽玛线辐射 介电性能 交联反应 降解反应
For information in English, please click here
Effect of gamma-ray irradiation on dielectric property of epoxy resin
Abstract:Effect of gamma-ray irradiation on dielectric property of epoxy resin has been investigated in this paper. Laminated samples were irradiated by 60Co gamma source at room temperature in air with a dose rate of 10 kGy/h and the total dose were 100 kGy and 1000 kGy. Dielectric properties were measured by using a Precision LCR Meter (Agilent E4980A) with frequency range from 0.5 kHz to 2 MHz. Obtained results indicated the dependence of the dielectric properties upon the total dose. It is suggested that the change in the dielectric properties is due to gamma-ray irradiation induced chemical reactions which result in the variation of material structure.
Keywords: insulaiton technology epoxy resin gamma-ray irradiation dielectric property cross-linking reaction degradation reaction
论文图表:
引用
No.****
同行评议
勘误表
伽玛线辐射对环氧树脂介电性能的影响
评论
全部评论0/1000