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Gas‐Filled polymers. II. Mechanical behavior of polyethylene
Author(s) -
Kolbeck A. G.,
Uhlmann D. R.,
Calvert P. D.
Publication year - 1973
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1973.070170303
Subject(s) - polyethylene , materials science , elongation , composite material , ultimate tensile strength , polymer , yield (engineering) , fracture (geology) , low density polyethylene , stress (linguistics) , linguistics , philosophy
The mechanical properties of gas‐filled polyethylene have been studied for material with density greater than about 0.85 g/cm 3 . The effect of gasification on the tensile properties of both high and low density polyethylene beyond a certain critical density reduction is to cause a general weakening of the material. The yield stress falls by about 25% over the range of density investigated, while the elongation to fracture decreases by an order of magnitude. A mechanism is proposed to this weakening and for the yielding and fracture phenomena observed for gasified polyethylene.