열중량 분석에 의한 유기절연재료의 방사선 열화 평가

Assessment of Radiation Degradation of Insulating Materials using Thermogravimetry Analysis

The radiation degradation of five insulating materials such as silicone rubber, ethylene-propylene rubber polybutylene terephthalte, poly carbonate, nylon 66 were evaluated by using thermogravimetry analysis (TGA) and tensile properties as a function of radiation doses. The results of temperature at 5% weight loss and activation energy from TGA showed linearly decreasing and increasing tendency as radiation doses comparing with tensile properties. Consequently, the assessment of TGA for the radiation degradation of materials was effective.