Tie-layer materials, articles and methods for making and using same
A composite article is provided that includes a polyolefin layer, a tie-layer, and a non-polyolefin. The tie-layer may comprise a silicon modified polyolefin. Methods are also provided for adhering a polyolefin to a non-polyolefin. Such articles may used, for example, in composite tubing.
1. A method for adhering a silicon modified polyolefin internal tube liner to a thermoset epoxy matrix surrounding the liner, comprising:
contacting said silicon modified polyolefin internal tube liner with a coupling agent represented by:
wherein X represents a moiety that is capable of bonding to said thermoset epoxy matrix by a chemical reaction;
R 1 represents a bivalent organic moiety or a bond;
R is selected independently for each occurrence from the group consisting of H, alkyl, alkenyl, alkynl, halogen, aralkyl, aryl, polycyclyl and a carbocycle; and
OR 3 is alkoxy or hydroxyl
to form a tie-layer,
contacting the tie-layer to a thermoset epoxy matrix to form a composite tube and
exposing the composite tube to conditions sufficient to create adhesion between the polyolefin internal tube liner and the thermoset epoxy matrix.
2. The method of claim 1 , wherein the silicon modified polyolefin is a silicon modified polyethylene.
3. The method of claim 1 , wherein the contacting the silicon modified polyolefin internal tube liner with the coupling agent comprises drawing the liner through a bath comprising said coupling agent.