کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5190738 | 1381216 | 2005 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The properties of poly(tetrafluoroethylene) (PTFE) in tension
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: The properties of poly(tetrafluoroethylene) (PTFE) in tension The properties of poly(tetrafluoroethylene) (PTFE) in tension](/preview/png/5190738.png)
چکیده انگلیسی
Samples of DuPont 7A and 7C Teflon (PTFE, poly(tetrafluoroethylene)) were tested in tension at strain-rates between 2Ã10â4 and 0.1 sâ1 and temperatures between â50 and 150 °C. Additionally, using a Hopkinson bar, a temperature series was undertaken in tension between â50 and 23 °C at a strain rate of 800 sâ1. To investigate the small-strain response, strain gauges were used to measure axial and transverse strain allowing the Poisson ratio to be calculated. The effect of crystallinity was investigated using 7C material thermally processed to produce more amorphous material. As expected, the tensile mechanical properties of PTFE are significantly affected by strain-rate and temperature, but only to a limited extent by crystallinity. The Poisson ratio at small strains was found to differ in tension (â0.36) and compression (â0.46). Failure behavior and microstructure were correlated to temperature induced phase transitions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer - Volume 46, Issue 19, 8 September 2005, Pages 8128-8140
Journal: Polymer - Volume 46, Issue 19, 8 September 2005, Pages 8128-8140
نویسندگان
P.J. Rae, E.N. Brown,