How to Paint Urethane Plastic

Save

Urethane plastic is a polymer consisting of organic units joined by carbamate links. The main problem with painting urethane plastic centers around the fact that it is nonporous. Any nonporous surface lacks the ability to adequately absorb paint adhesives. This typically results in an unstable finish that ultimately flakes and peels. Professionals abrade urethanes to improve their adhesive qualities. If you want a durable, lasting finish, employ this same technique.

Things You'll Need

  • Water-based soap
  • Coarse nylon pad
  • Rags
  • Canvas drop cloth
  • 150- to 180-grit sandpaper
  • Mineral spirits
  • Latex primer
  • 320-grit sandpaper
  • Tack cloth
  • Acrylic enamel
  • Polyester paintbrush
  • Craft brushes
  • Wash the urethane plastic with water-based soap, using a coarse nylon pad. Rinse the urethane with wet rags. Place it on a canvas drop cloth and allow it to dry for about an hour.

  • Abrade the urethane plastic to improve its adhesive qualities. Sand the urethane until it feels rough. Use 150- to 180-grit sandpaper.

  • Wipe the plastic with a rag dampened with mineral spirits. Allow 10 minutes for the solvent to evaporate.

  • Coat the urethane plastic with latex primer, using a polyester paintbrush. This particular type of brush produces smoother results. Don't use a brush that has nylon bristles. Let the urethane dry for two hours. Wash the brush, using plain tap water.

  • Sand the primer base, using 320-grit sandpaper. Stop when the base feels slightly rough or tacky.

  • Wipe the plastic with a tack cloth.

  • Paint the urethane plastic with an acrylic enamel, using a polyester brush. Let the urethane dry for two hours.

Tips & Warnings

  • Sanding is critical to promoting adhesion. If you prime unsanded urethane plastic, flaking will follow. Likewise, if you apply paint directly over an unsanded primer base, the paint may not properly adhere.
  • Photo Credit Jupiterimages/Photos.com/Getty Images
Promoted By Zergnet

Comments

You May Also Like

  • What Kind of Primer for Urethane Paint?

    Using an inappropriate primer can cause paint failure. Though urethane paint is very durable, the surface to which it is applied largely...

  • How to Paint Plastic

    Look around and you’ll find plastic on ballpoint pens, food bowls, containers, lunchboxes and even clear jelly-type summer shoes. With its unbeatable...

  • How to Paint Urethane Bumpers

    Urethane bumpers -- or, properly, "polyurethane" bumpers -- are simply plastic bumpers or bumper covers. Plastic bumpers gained acceptance in the automotive...

  • What Is Polyurethane Paint?

    Polyurethane paint provides a hard, durable gloss for crafts and model making and can be applied to almost any surface. There are...

  • How to Sand a Bumper

    Learn how to sand a bumper before painting with expert painting tips in this free online car repair video clip.

  • What Is Urethane Paint?

    Urethane paint is paint created by mixing pigment with polyurethanes, which act as the binder to hold the pigment molecules together. Many...

Related Searches

Read Article

12 Tiki Essentials to Turn Your Bar Cart Into a Tropical Paradise

M
Is DIY in your DNA? Become part of our maker community.
Submit Your Work!