| 초록 |
An accelerated hydrothermic ageing was performed on samples of plasticized poly(vinyl chloride). The ageing test was done by immersing the samples in hot water at 75℃ for different exposure periods up to 1500 h. The water-related degradation behavior of samples by the plasticizer, inorganic filler, and surface treatment of metal hydroxide was investigated by the correlation of electrical measurements, determination of the weight changes, differential scanning calorimetry (DSC) analysis, and scanning electron microscope (SEM) observation. The results indicated that polymeric plasticizer lowed water resistance of the samples by its hydrophilic property and hydrolysis reaction. On the other hand, the addition of clay and surface treatment of metal hydroxide decreased water absorption and deterioration of volume resistivity. It was also found that the void size of the samples after hydrothermic ageing strongly affected the material's water resistance and electrical degradation. |
