RADIATION-INDUCED CROSS-LINKING OF POLYTETRAFLUOROETHYLENE

被引：187

作者：

OSHIMA, A

TABATA, Y

KUDOH, H

SEGUCHI, T

机构：

[1] JAPAN ATOM ENERGY RES INST,TAKASAKI RADIAT CHEM RES ESTAB,TAKASAKI,GUNMA 37012,JAPAN

[2] TOKAI UNIV,FAC ENGN,HIRATSUKA,KANAGAWA 25912,JAPAN

来源：

RADIATION PHYSICS AND CHEMISTRY | 1995年 / 45卷 / 02期

关键词：

Crosslinking - Elasticity - Electron beams - Phase transitions - Radiation effects - Strength of materials - Tensile testing - Thermal effects - Thermoanalysis - Vacuum;

D O I：

10.1016/0969-806X(94)E0009-8

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The irradiation effect of polytetrafluoroethylene (PTFE) was examined by tensile test and thermal analysis in a wide range of irradiation temperature. The tensile strength and elongation at break changed very much by irradiation temperature, especially around the PTFE melting temperature (327-degrees-C). By electron beam irradiation under vacuum in the molten state at around 340-degrees-C, the dose required for the half decay of the elongation at break was about 1 MGy, and the modulus and yield strength increased with dose, whereas the dose for the half decay at room temperature irradiation was less than 50 kGy, and the modulus and yield strength decreased. The crystallinity decreased by the irradiation in the molten state, but increased with dose below the melting temperature. It is concluded that network is formed with the crosslinking of PTFE by irradiation under vacuum in the molten state just above the melting point.

引用

页码：269 / 273

页数：5

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