JIA Shaojin, XU Zhongting, ZHANG Zhicheng, et al. Studies on the effects of EPDM, SR on PTC- of HDPE/CB before and after γ-radiation[J]. Journal of Radiation Research and Radiation Processing, 2004,22(6):329-333.
JIA Shaojin, XU Zhongting, ZHANG Zhicheng, et al. Studies on the effects of EPDM, SR on PTC- of HDPE/CB before and after γ-radiation[J]. Journal of Radiation Research and Radiation Processing, 2004,22(6):329-333.DOI:
High-density-polyethylene (HDPE), Si rubber (SR) and ethylene-density-polyethylene (EPDM) were used as the polymer matrices, A kinds of carbon blacks was used as the conductive filler. The positive temperature coefficient (PTC) intensity of the HDPE/CB, HDPE/EPDM /CB composites flow during extrusion to produced was tested before and after irradiation. Compared to that of HDPE/CB composites, the electrical reproducibility of the irradiated HDPE/EPDM /CB composites of is better. The effects of γ-rays irradiation were also estimated. The results showed that the reproductive of the PTC effect was related to the adhesion between the interface of the polymer matrices and CB particles. These PTC phenomena and their distinctive aspects were described. The explanations were given from the structural characteristics of the blends, CB particles distribution and motion of polymer segments.
关键词
高密度聚乙烯负温度系数正温度系数硅橡胶炭黑
Keywords
High-density-polyethylene (HDPE)Negative temperature coefficient (NTC)Positive temperature coefficient (PTC) intensitySi RubberCarbon black