环氧树脂表面电荷积聚与消散特性研究

Study on Surface Charge Accumulation and Dissipation Characteristics of Epoxy Resin

摘要: 环氧树脂表面电荷积聚与消散特性分析由于考虑不全面，未从多个方向对其进行深入分析，仅分析伽马射线辐射量等情况下的特征，导致分析存在局限性，因此，提出环氧树脂表面电荷积聚与消散特性研究。该研究从电极接触方式、大气压介质阻挡放电和伽马射线辐射三种条件下研究环氧树脂表面电荷积聚与消散特性，其中采用接触和不接触两种电极分布方式连接环氧树脂，测试电极分布方式对于环氧树脂表面电荷分布影响；在大气压介质阻挡放电条件下，使用等离子体放电装置处理环氧树脂，分析处理前后环氧树脂表面电荷分布；测试工作环境中伽马射线辐射量对于环氧树脂表面电荷积聚与消散特性的影响。试验结果显示采用接触电极分布方式，环氧树脂表面电荷积聚量更少，到达了−4.8 pC/mm²，电荷消散更快；采用等离子体放电装置，实现大气压介质阻挡放电，其中经过9 min等离子体发生装置处理后，环氧树脂表面电荷密度降低更明显，此时的电荷密度仅为5.5 pC/mm²，抑制环氧树脂表面电荷积聚，加快表面电荷消散。环氧树脂所处环境中，在辐射量达到1000 kGy时，正负电荷密度分别由68.9 pC/mm²和80.1 pC/mm²降到36.9 pC/mm²和47.2 pC/mm²，伽马射线辐射量越大，环氧树脂表面电荷积聚越少，电荷消散越多。

Abstract: Due to incomplete consideration, the analysis of surface charge accumulation and dissipation characteristics of epoxy resin did not carry out in-depth analysis from multiple directions, and only analyzed the characteristics in the case of gamma ray radiation, leading to limitations in the analysis. Therefore, the study of surface charge accumulation and dissipation characteristics of epoxy resin was proposed. This study studied the surface charge accumulation and dissipation characteristics of epoxy resin under three conditions: electrode contact mode, dielectric barrier discharge at atmospheric pressure and gamma-ray radiation. Two electrode distribution modes of contact and non-contact were used to connect epoxy resin, and the influence of electrode distribution mode on the surface charge distribution of epoxy resin was tested. Under the condition of dielectric barrier discharge at atmospheric pressure, epoxy resin was treated with plasma discharge device, and the surface charge distribution of epoxy resin before and after treatment was analyzed. The effect of gamma ray radiation on the surface charge accumulation and dissipation characteristics of epoxy resin in working environment was tested. The test results show that the charge accumulation on the surface of epoxy resin is less, reaching −4.8 pC/mm², and the charge dissipation is faster. Plasma discharge device was used to achieve dielectric barrier discharge at atmospheric pressure. After 9 min plasma generation device treatment, the surface charge density of epoxy resin decreased more significantly, and the charge density at this time was only 5.5 pC/mm², which inhibited the surface charge accumulation of epoxy resin and accelerated the surface charge dissipation. In the environment of epoxy resin, when the radiation amount reaches 1000kGy, the positive and negative charge density decreases from 68.9 pC/mm² and 80.1 pC/mm² to 36.9 pC/mm² and 47.2 pC/mm², respectively. The greater the gamma ray radiation amount, the less charge accumulation on the surface of epoxy resin, and the more charge dissipation.