A lightweight foam polymer, usually polystyrene or polyurethane , forms the core of the surfboard.
The polymer is polyurethane , which is foamed to create closed cells.
five coats of polyurethane
Athletic shoes can contain several petrochemical polymers in their soles and uppers: butadiene, polyurethane , polyethylene, and nylon, to name a few.
Materials that exhibit most of these properties are typically polymer-based, either polyurethane or epoxy.
Insulation materials have also changed over the years from the original cork sheeting to the CFC-free, foamed in place rigid polyurethane used today.
Remember to polyurethane your creations after painting to protect them!
Mother has a bad habit of seeing to it that antiques are duly re-finished and polyurethaned .
Usually they're in those awful Martha Stewart-ey sort of catalogues, stained a deep cherry and then polyurethaned for the storage of itty-bitty curios (which are sold on the facing page).
Unlike finish paints, shellac-base primer-sealers, such as Zinsser's B-I-N, will adhere to all cabinet surfaces-painted, polyurethaned , unfinished, Formica, plastic, metal and glass-to form a sound base for the topcoat.