Method for Bonding a Polyurethane Molding Composition to a Cable Jacket of an Olefin/Ester Interpolymer.
Abstract
A room temperature curing polyurethane composition is bonded to the surface of cables having jackets of an olefin/ester interpolymer to provide a water resistant seal thereabout by first exposing the surface of a length of cable to an alkali metal hydroxide solution to hydrolyze the functional ester groups and thereby substitute hydroxyl groups for the organic acid of the ester in the interpolymer at the surface of the jacket. A diisocyanate primer is applied to the treated surface and it interacts with the hydroxyl groups to produce pendant reactive groups. A room temperature curing urethane prepolymer composition is then molded about the primed surface at ambient temperatures and the unreacted hydroxyl groups along the urethane prepolymer chain react with the pendant reactive groups of the jacket to produce a firmly bonded overmolding on the jacket.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 23, 1992
- Accession Number
- ADD015627
Entities
People
- Thomas S. Ramotowski
Organizations
- United States Department of the Navy