Accession Number:

ADA169643

Title:

Light Stability of Polyurethane Coatings.

Descriptive Note:

Technical rept.,

Corporate Author:

UNIVERSITY OF SOUTHERN MISSISSIPPI HATTIESBURG DEPT OF POLYMER SCIENCE

Personal Author(s):

Report Date:

1986-06-16

Pagination or Media Count:

22.0

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.

Subject Categories:

  • Radiation and Nuclear Chemistry
  • Plastics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE