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Rheology of high solid coatings. II. Analysis of combined sagging and leveling
Author(s) -
Wu Souheng
Publication year - 1978
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.1978.070221006
Subject(s) - rheology , materials science , shear thinning , viscosity , composite material , non newtonian fluid , thermodynamics , physics
The rheology of combined sagging and leveling of high solid coatings is analyzed in terms of non‐Newtonian power‐law model. The results indicate that, in order to have good leveling, good sag control, and good sprayability at the same time, high solid coatings should have pseudoplastic rheology with power constant of about 0.5 and viscosity at sec ‐1 of about 50 poises. This theoretical prediction is confirmed experimentally.