Title :
Effects of Copolymerization on Space Charge in Polypropylene
Author :
Mizutani, T. ; Nakane, E. ; Kaneko, K. ; Mori, T. ; Takino, H. ; Ishioka, M.
Author_Institution :
Dept. of Electr. Eng., Aichi Inst. of Technol., Toyota
Abstract :
The DSC curve, the DC current and the space charge distribution have been measured on polypropylene (H-PP), block copolymer (B-PP) and random copolymer (Z-PP) copolymerized with Ziegler catalyst, and M-PP copolymerized with metallocene catalyst. The copolymers have 3.0~4.5 wt% of ethylene. B-PP with 4.5 wt% of ethylene had similar DSC curve and space charge distribution to H-PP. The magnitude of DC current is in the order of M-PP>Z-PP>B-PP>H-PP. Space charge in PP and PP copolymers depended on copolymerization, electrode, temperature and so on. The effects of copolymerization on morphology, DC current and space charge distribution of PP and PP copolymers have been also discussed
Keywords :
catalysts; differential scanning calorimetry; electrodes; polymer blends; polymerisation; space charge; DC current; Ziegler catalyst; block copolymer; copolymerization; copolymerization effects; differential scanning calorimetry curve; electrode; metallocene catalyst; polypropylene; random copolymer; space charge distribution; Atmospheric measurements; Charge measurement; Current measurement; Electrodes; Morphology; Polyethylene; Polymers; Power cables; Space charge; Voltage;
Conference_Titel :
Properties and applications of Dielectric Materials, 2006. 8th International Conference on
Conference_Location :
Bali
Print_ISBN :
1-4244-0189-5
Electronic_ISBN :
1-4244-0190-9
DOI :
10.1109/ICPADM.2006.284117
