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An observation on the han‐villamizar critical pressure concept in thermoplastic foams
Author(s) -
Throne J. L.
Publication year - 1983
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760230610
Subject(s) - thermoplastic , materials science , solubility , thermodynamics , composite material , chemistry , physics
This note draws together the Han‐Villamizar experimental observations on the critical pressure at which gas bubbles became visible in flowing thermoplastic melts and a simple method of predicting the equilibrium pressure based on gas solubility. It is shown that the observed pressure is 40 to 75 percent of the calculated pressure.