IMPROVEMENT OF RADIATION-RESISTANCE FOR POLYTETRAFLUOROETHYLENE (PTFE) BY RADIATION CROSS-LINKING

Authors
OSHIMA A IKEDA S SEGUCHI T TABATA Y
Citation
A. Oshima et al., IMPROVEMENT OF RADIATION-RESISTANCE FOR POLYTETRAFLUOROETHYLENE (PTFE) BY RADIATION CROSS-LINKING, Radiation physics and chemistry, 49(2), 1997, pp. 279-284
Citations number
13
Categorie Soggetti
Nuclear Sciences & Tecnology","Chemistry Physical","Physics, Atomic, Molecular & Chemical
Journal title
Radiation physics and chemistry → ACNP
ISSN journal
0969806X
Volume
49
Issue
2
Year of publication
1997
Pages
279 - 284
Database
ISI
SICI code
0969-806X(1997)49:2<279:IORFP(>2.0.ZU;2-3
Abstract
Crosslinked polytetrafluoroethylene(PTFE) was prepared by electron bea m irradiation in the molten state of PTFE at 340 +/- 3 degrees C in in ert gas atmosphere. The crosslinking density was changed by the irradi ation dose. Radiation resistance of the crosslinked PTFE was examined on the mechanical properties after gamma-ray irradiation at room tempe rature under vacuum and in air. Dose at a half value of elongation at break was about 1 MGy for 500 kGy-crosslinked PTFE, while dose for non -crosslinked PTFE was only 3.5 kGy. It has been found that the radiati on resistance of PTFE can be improved to large extent by crosslinking. Copyright (C) 1997 Elsevier Science Ltd