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Thermal gradient solid state forming of polypropylene
Author(s) -
Lo J. C. W.,
Shinozaki D. M.
Publication year - 2007
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.26950
Subject(s) - polypropylene , materials science , composite material , temperature gradient , thermal , deformation (meteorology) , shear (geology) , thermodynamics , physics , quantum mechanics
The near surface region of polypropylene was hardened in a forming process, which involved a large shear strain in a strong thermal gradient. The optimal processing conditions were estimated by modeling the temperature distribution in the deformation zone. Microindentation testing was used to characterize the corresponding depth‐dependent mechanical properties. The mechanical gradient, which developed after forming, was consistent with the observed variation in microstrucfture. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci, 2008