Accession Number:

ADA135591

Title:

Effect of Amine Surface Treatment on the Adhesion of a Polyurethane to the Surface.

Descriptive Note:

Technical rept.,

Corporate Author:

AKRON UNIV OH INST OF POLYMER SCIENCE

Personal Author(s):

Report Date:

1983-12-01

Pagination or Media Count:

28.0

Abstract:

Amines in general and 3-aminopropyltriethoxysilane in particular were shown to improve the adhesion of a polyurethane to glass. At equivalent concentrations of amine in the solutions used to treat the glass the order of increase in the work of adhesion was 3-aminopropyltriethoxysilane 1,4-diaminobutane approximately p-phenylendiamine piperazine aniline. The polyurethane was prepared from ARCOs hydroxyterminated polybutadiene, R-45HT, toluene diisocyanate, trimethylolpropane and N,N-bis2-hydroxypropyl aniline. The ratio -NCOtotal OH was kept constant and equal to 1.0. The swelling ratio, after curing, also remained constant. As the -NCO content compared to polymer-OH increased, the adhesion of the polyurethane to glass increased initially, passed through a maximum for prepolymers with 6 excess NCO, and then decreased again. Elongation at break behaved similarly but ultimate tensile strength reached a maximum and then stayed constant. The significance of these results is discussed. Adhesion of the polyurethane to chrome-plated steel did not show similar effects.

Subject Categories:

  • Adhesives, Seals and Binders
  • Ceramics, Refractories and Glass
  • Plastics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE