The properties of poly (tetrafluoroethylene) (PTFE) in compression

被引：334

作者：

Rae, PJ ^{[1
]}

Dattelbaum, DM ^{[1
]}

机构：

[1] Los Alamos Natl Lab, Los Alamos, NM 87545 USA

来源：

POLYMER | 2004年 / 45卷 / 22期

关键词：

polytetrafluoroethylene; PTFE; compression;

D O I：

10.1016/j.polymer.2004.08.064

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Samples of DuPont 7A and 7C Teflon (PTFE, poly(tetrafluoroethylene)) were tested in compression at strain-rates between 10(-4) and 1 s(-1) and temperatures between - 198 and 200 degreesC. Additionally, using a Split-Hopkinson pressure bar, a temperature compression series was undertaken between - 100 and 150 degreesC at a strain rate of 3200 s(-1). To investigate the small-strain response, strain gauges were used to measure axial and transverse strain allowing the Poisson ratio to be quantified. As expected, the mechanical properties were found to be strongly affected by strain-rate and temperature. Moduli were found by several methods and the trend, with respect to temperature, lends weight to the suggestion that the glass-transition temperature of PTFE is approximate to -100 degreesC. The physical properties of the sintered PTFE were measured and the crystallinities measured by several techniques. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：7615 / 7625

页数：11

共 45 条

[1]

[Anonymous], 1979, MECH PROPERTIES SOLI

[2] BEHAVIOR OF POLYTETRAFLUOROETHYLENE (TEFLON) UNDER HIGH PRESSURES [J].