Accession Number : ADA135591

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

Descriptive Note : Technical rept.,


Personal Author(s) : Liang,F ; Dreyfuss,P

PDF Url : ADA135591

Report Date : Dec 1983

Pagination or Media Count : 28

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 ARCO's hydroxyterminated polybutadiene, R-45HT, toluene diisocyanate, trimethylolpropane and N,N-bis(2-hydroxypropyl) aniline. The ratio ((-NCO)/(total 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.

Descriptors :   *Amines, *Adhesives, *Polyurethane resins, *Glass, Surface properties, Temperature, Concentration(Chemistry), Surface reactions, Adhesive bonding

Subject Categories : Adhesives, Seals and Binders
      Ceramics, Refractories and Glass

Distribution Statement : APPROVED FOR PUBLIC RELEASE