| 基于动态力学参数研究环氧云母绝缘材料的老化特征 |
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| 引用本文： | 贾志东,高乃奎,乐波,蒋雄伟,谢恒堃. 基于动态力学参数研究环氧云母绝缘材料的老化特征[J]. 电工技术学报, 2000, 15(4): 47-51 |
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| 作者姓名： | 贾志东 高乃奎 乐波 蒋雄伟 谢恒堃 |
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| 作者单位： | 西安交通大学电力设备电气绝缘国家重点实验室,710049 |
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| 摘 要： | 基于动态力学参数研究了环氧云母绝缘材料在电热条件和冷热循环条件下的老化特征。推导了其玻璃化转变活化能的计算公式 ,并计算了不同老化阶段环氧云母复合绝缘材料的玻璃化转变表观活化能。提出了用动态力学参数表征环氧云母绝缘材料老化特征的新方法。
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| 关 键 词： | 动态力学参数 玻璃化转变活化能 环氧云母 老化 |
The Study of Aging Characteristics of Epoxy/Mica Materials Based on Dynamic Mechanical Properties |
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| Jia Zhidong,Gao Naikui,Yue Bo,Jiang Xiongwei,Xie Hengkun. The Study of Aging Characteristics of Epoxy/Mica Materials Based on Dynamic Mechanical Properties[J]. Transactions of China Electrotechnical Society, 2000, 15(4): 47-51 |
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| Authors: | Jia Zhidong Gao Naikui Yue Bo Jiang Xiongwei Xie Hengkun |
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| Affiliation: | Xi'an Jiaotong University 710049 China |
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| Abstract: | Based on dynamic mechanical analysis (DMA) of properties of composites,the study of aging characteristics of epoxy/mica was given in this paper in the different of aging time under the conditions of electrical thermal stresses and cooling thermal stresses.A method of calculating the apparent activation energy of glass transition (AAEGT) according to the DMA curve was put forward,and it was used to calculate the apparent activation energy of glass transition of epoxy/mica in the different aging time.It was suggested that dynamic mechanical properties can be used described the aging characteristics of epoxy/mica. |
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| Keywords: | DMA AAEGT Epoxy/mica Aging |
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