Results 101 to 110 of about 51,810 (161)

Thermal aging of cross-linked polyethylene

Annales de Chimie Science des Matériaux, 2006
L'effet du vieillissement thermique sur les proprietes mecaniques du polyethylene reticule chimiquement (PRC), utilise dans l'isolation des câbles de haute tension, a ete etudie. Nous avons montre que l'allongement a la rupture et la resistance a la traction du polymere diminuent en fonction du temps de vieillissement.
Larbi Boukezzi, Mohammed Nedjar, Leila Mokhnache, Mohammed Lallouani, Ahmed Boubakeur   +4 more
openaire   +1 more source

Surface properties of cross-linked polyethylene

1998 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.98CH36257), 2002
This study reports on the loss of hydrophobicity of cross-linked polyethylene (XLPE) insulation. Specimens of steam cured XLPE cut from a nominal 28 kV/sub rms/ cable were immersed in saline solutions of varying conductivities from 5 to 10/sup 5/ /spl mu/S/cm over a wide range of temperatures from 0 to 98/spl deg/C.
M. Ashraf Khan, R. Hackam
openaire   +1 more source

Highly Cross-linked Polyethylene in Total Hip Arthroplasty

Journal of the American Academy of Orthopaedic Surgeons, 2006
Although total hip arthroplasty is a common and highly successful procedure, its long-term durability has been undermined by the cellular response to polyethylene wear debris and the subsequent effects on periprosthetic bone. Research elucidating the effects of sterilization on polyethylene wear has facilitated the development of a more wear-resistant ...
Alexander C, Gordon, Darryl D, D'Lima, Clifford W, Colwell   +2 more
openaire   +2 more sources

The Wear of Cross-Linked Polyethylene against Itself

Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine, 1996
Cross-linked polyethylene (XLPE) may have an application as a material for an all-plastic surface replacement finger joint. It is inexpensive, biocompatible and can be injection-moulded into the complex shapes that are found on the ends of the finger bones. Further, the cross-linking of polyethylene has significantly improved its mechanical properties.
T J, Joyce, H E, Ash, A, Unsworth
openaire   +2 more sources

Physically cross-linked polyethyleneviareactive extrusion

Polymer Chemistry, 2019
Ureidopyrimidinone (UPy) is introduced into various polyethylenes (PEs) bearing hydroxyl groups by solution grafting, affording physically cross-linked PEviamultiple H-bonding.
Arkadiusz Zych, Alice Verdelli, Maria Soliman, Roberta Pinalli, Jérôme Vachon, Enrico Dalcanale   +5 more
openaire   +2 more sources

Cross-Linked Polyethylene for Higher Voltages

IEEE Transactions on Power Apparatus and Systems, 1967
The rapid evolution of cross-linked polyethylene for high-voltage cable applications and the factors which promoted this development are discussed in relation to the growing demand for solid-dielectric constructions. Advances in cable design and technology are outlined for this thermally-stable insulation, highlighting the technical advantages of ...
A. McKean, F. Oliver, S. Trill
openaire   +1 more source

Experimental Evaluation of Properties of Cross-Linked Polyethylene

Materials and Manufacturing Processes, 2003
This article describes several aspects of the production of cross-linked polyethylene. Advantages and disadvantages of chemical, or electron beam irradiation, cross-linking processes are discussed. The material under test is thermoshrinking low density polyethylene, produced at the Megarad s.r.l. (Cassino, Italy) firm.
MEOLA C., GIORLEO G., PRISCO, UMBERTO
openaire   +4 more sources

Multiple morphologies in cross-linked polyethylene

Conference on Electrical Insulation & Dielectric Phenomena - Annual Report 1980, 1980
Here, a radial section of an uncross-linked miniature extruded cable was studied, the cable having been polished and cut in half, and then each half treated with one etchant. Both etchants revealed the spherulitic structure (Figure 1), much greater penetration having occurred in the case of the permanganic etchant.
D. V. Brower, K. L. Naylor, P. J. Phillips   +2 more
openaire   +1 more source

Conventional Versus Cross-Linked Polyethylene for Total Hip Arthroplasty

Orthopedics, 2015
The clinical and radiographic outcomes of 88 patients who underwent primary total hip arthroplasty with either conventional polyethylene or cross-linked polyethylene (XLPE) from the same manufacturer were compared. There were no significant differences between the 2 subpopulations regarding average age, gender, side affected, or prosthetic
SURACE, MICHELE FRANCESCO, Monestier, Luca, Vulcano, Ettore, Harwin, Steven F., CHERUBINO, PAOLO   +4 more
openaire   +3 more sources

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