Results 251 to 260 of about 153,105 (301)

Space charge behavior of chemically cross-linked and radiation cross-linked polyethylene

2000 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.00CH37132), 2002
This paper presents results of an investigation having the aim to compare electrical and oxidative performances of chemically and radiation cross-linked polyethylene. Gamma irradiated and peroxide crosslinked specimens are characterized through dc space charge observations, as well as ac electric strength and oxidation induction time measurements ...
L. Martinotto, F. Peruzzotti, F. Palmieri, G.C. Montanari, S. Rai   +4 more
openaire   +1 more source

The Morphology of Cross-Linked Polyethylene Insulation

IEEE Transactions on Electrical Insulation, 1978
Cross-linked polyethylene, now commonly used for insulation of underground electric distribution cables, is susceptible to electrochemical treeing, in common with other polymeric dielectrics. This treeing phenomenon sometimes originates at holes or cavities present in the cable.
J. Muccigrosso, P. J. Phillips
openaire   +1 more source

Impedance Spectroscopy Behavior of Cross-Linked Polyethylene

Journal of Macromolecular Science, Part B, 2000
Impedance spectroscopy (IS) was to analyze the dielectric behavior of cross-linked polyethylene (XLPE) and to produce an electric analog equivalent circuit. In the high-frequency range, a peak was observed, and the values of the resistance for this particular frequency were calculated for the XLPE samples with different thicknesses.
L. E. CARON, C. M. GARCIA, P. C. N. SCARPA, A. RÚVOLO-FILHO   +3 more
openaire   +1 more source

Micro-Indentation Test of Cross-Linking Polyethylene

Advanced Materials Research, 2015
Radiation crosslinking of linear polyethylene (LLDPE) is a well-recognized modification of improving basic material characteristics. This research paper deals with the utilization of electron beam irradiated LLDPE on the micro-indentation test. The effect of the irradiation on mechanical behavior of the tested polyethylene was investigated. The results
Martin Ovsik, David Manas, Miroslav Manas, Michal Stanek, Martin Reznicek   +4 more
openaire   +1 more source

Thermal oxidation of photochemically cross-linked polyethylene

Polymer Degradation and Stability, 1991
Abstract The resistance to thermal oxidation of photochemically cross-linked PE films has been ascertained to depend on the type of cross-linking initiator. Cross-linking of films with anthraquinone or with its 2-chloro or 2-ethyl derivatives has no effect on the thermal oxidation process of PE.
N.I. Litsov, V.B. Jakovlev, V.I. Nikolaevskaja   +2 more
openaire   +1 more source

Highly Cross-Linked Polyethylenes

2011
Osteolysis after total joint replacement using ultra-high molecular weight Polyethylene bearing components has been shown to be a major factor for the long-term failure of such components. Highly cross-linked polyethylene has already been introduced in the late 1970s and demonstrated to have superior wear resistance compared to non-irradiated and ...
openaire   +1 more source

Kinetics of solidification of cross-linked polyethylene

Conference on Electrical Insulation & Dielectric Phenomena - Annual Report 1982, 1982
In the production of extruded dielectric cables the molten polymer is invariably quenched following extrusion. During this process crystallization of the polymer occurs at a series of different temperatures depending on the thermal conductivity of the polymer in question.
Y.-H. Kao, H.-T. Tseng, P. J. Phillips
openaire   +1 more source

Polarization behaviour of cross-linked polyethylene (XLPE)

10th International Symposium on Electrets (ISE 10). Proceedings (Cat. No.99 CH36256), 2003
Cross-linked polyethylene (XLPE) has low dieletric permittivity, loss factor, good dimensional stability and solvent resistance. Because of these inherent and desirable properties XLPE cables are extensively used in power distribution applications.
P. Sanzi, F. Monti, G.C. Montanari, D.K. Das-Guptaz   +3 more
openaire   +1 more source

Study on Cross-Linking Degree of Polyethylene

Advanced Materials Research, 2013
In this paper, the linear low density polyethylene (LLDPE) was melted and cross-linked by dicumyl peroxide (DCP) used to prepare cross-linked polyethylene (XPE). The gel content was determined by extraction method. The effect of content of cross-linker, cross- linked time, cross-linked temperature and other factors on the gel content were studied.
Li Qiu Zou, Guang Feng Wu
openaire   +1 more source

Hardness and creep of cross-linked polyethylene

Polymer, 1989
Abstract Vickers microhardness, tensile and compression tests and creep experiments have been performed at 22°C on electron beam irradiated high density polyethylene (HDPE). The microhardness and compression strengths were found to increase progressively with increasing dose in the range 0-500 kGy but the tensile strength was relatively constant. The
P.J. Henderson, A.J. Wallace
openaire   +1 more source