In:
Journal of Applied Physics, AIP Publishing, Vol. 44, No. 10 ( 1973-10-01), p. 4322-4327
Abstract:
The tensile mechanical properties of PTFE were measured as a function of crystallinity, temperature, strain rate, and the environment. All prior investigations had unknowingly included the environmental effect produced by N2 and acetone. The intrinsic low-temperature mechanical properties were displayed for the first time by using helium as the inert environment. It was found that all drops in the load at yield point were caused by environmental craze yielding. For the first time crazes were observed in PTFE. At 78 °K, the effects of crystallinity on the intrinsic mechanical behavior could be simply understood by viewing the PTFE as a polycrystalline material with different grain sizes where the rigid grain boundaries impede the deformation within the grains. At 200 °K grain boundary and grain deformation occur easily. The yield behavior was found to be entirely consistent with the internal friction and morphological results from other investigations.
Type of Medium:
Online Resource
ISSN:
0021-8979
,
1089-7550
Language:
English
Publisher:
AIP Publishing
Publication Date:
1973
detail.hit.zdb_id:
220641-9
detail.hit.zdb_id:
3112-4
detail.hit.zdb_id:
1476463-5
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