Light Stability of Polyurethane Coatings.

Abstract

The photodegradation of methylene 4,4'-diphenyl diisocyanate (MDI) and toluene diisocyanate (TDI) based polyurethanes is reported to be dependent on backbone chain flexibility and matrix crystallinity. Both absorbance changes and gel formation decrease as the stiffness and crystalline content of powders and films increase. Stabilizers are only marginally effective in reducing the extent of degradation of the polyurethane films.

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Document Details

Document Type
Technical Report
Publication Date
Jun 16, 1986
Accession Number
ADA169643

Entities

People

  • Charles E. Hoyle
  • K. J. Kim
  • Y. G. No

Organizations

  • University of Southern Mississippi

Tags

Communities of Interest

  • C4I

DTIC Thesaurus Topics

  • Abstracts
  • Chemistry
  • Ethylene Glycol
  • Excitation
  • Films
  • Fluorescence
  • Mechanical Properties
  • Melting Point
  • Mercury Lamps
  • Military Research
  • Mississippi
  • Monochromators
  • Photolysis
  • Physical Properties
  • Polymers
  • X Rays
  • Xenon Lamps

Readers

  • Organic Chemistry
  • Polymer Science and Engineering.