Adhesion
PRIMACOR* copolymers offer exceptional adhesion to a wide range of substrates. In fact, PRIMACOR copolymers can be modified to fit almost any application area based on your specific performance requirements.
Pick a Substrate
Find out how well PRIMACOR copolymers adhere to your substrate:
How adhesion is influenced
Two factors influence adhesion of any polymer to a substrate-the chemical interactivity of the polymer and the substrate surface molecules (generally, adhesion to polar materials increases with comonomer content); and the ability of the coating or adhesive to flow and "wet out" the substrate. PRIMACOR copolymers provide both.
Adhesion values are also influenced by the method of coating. Aqueous, extruded melt and solvent coatings all "wet" substrate surfaces differently. The condition of the substrate (cleanliness, degree of oxidation, etc.) also has a marked influence on the adhesion values attained.
PRIMACOR copolymers can also bond fibers or foams, even though the adhesion is not technically good. This is because the polymer penetrates into the fiberfoam network, surrounding the areas to be bonded.
It is also possible to influence adhesion properties by cross-linking acid groups. Adhesion to non-polar substrates is then improved, but at the expense of adhesion to polar substrates. Bonding of non-polar substrates is generally achieved with the help of a surface treatment such as chemical priming, flame oxidization, or corona discharge.
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