Internal strain in solvent-cast coatings

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AuthorSearch for:
Journal titleJournal of Coatings Technology
Pages6468; # of pages: 5
Subjectcoating (process); drying; solvents; shrinkage; polymeric materials; stresses; paints; Buildings; revetement (procede); sechage; solvant; retrait ( alteration); materiau polymerique; contrainte ( mecanique); peinture
AbstractAfter mercury amalgamation of their tinplate substrates, the shrinkage of physically drying coatings were measured and identified with their internal strain. This strain arose from the solvent lost between the solidification point of the coating and its final "dry" state. The measurements showed no variation of internal strain with coating thickness or initial solution concentration. A model is presented which explains the results quite successfully. It is based on the assumption that the solidification point can be identified with the solvent concentration which depresses the glass transition of the polymer to the ambient temperature.
Publication date
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
NRC number17293
NPARC number20374142
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Record identifier2e5224d0-7d37-46c9-be5b-b93916155fe2
Record created2012-07-23
Record modified2016-05-09
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