Urethane Supply Company has everything needed to repair and refinish plastics. From plastic welders to instant glues to epoxy fillers to paints to primers, you name it. Some of our products that you may be familiar with are: Mini-Weld Airless Plastic Welder, Plastic Magic Adhesion Promoter, PlatiFix plastic repair kit (not to be confused with Plastex plastic repair kit), Bumper and Trim Black (not to be confused with Forever Black), Wax Blaster wax remover, Flex Filler (not to be confused with Duramix), Black Cat primer (not to be confused with Transtar Hydroflex), Insta-Weld adhesives (not to be confused with Crazy Glue or LocTite), Bumper and Cladding Coat, ATV Fender Welder, Kayak and Canoe Welder for Pelican canoes, FiberFlex welding rods, Uni-Weld welding rods, EZ Weld Hot Air Plastic Welder, Steinel hot air plastic welder. We also carry a complete line of plastic welding rods. For example, we manufacture ABS welding rods, Polypropylene welding rods, Polyethylene welding rods, TPO (TEO) plastic welding rods, Polyurethane welding rods. In addition to the products you need to repair plastic, we also have detailed instructions and tutorials with step-by-step instructions on how to repair plastic.
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One way to tell if you are working with a thermoset urethane is to see if the plastic smokes and sizzles when you touch it with the tip of the (very hot) airless plastic welder. Also, if you will notice, thermoset urethane turns brown and sticky... even after it has cooled off. The heat is actually destroying the plastic.
Thermoplastic (plastic that will melt) bumpers (such as polypropylene and TPO) do not smoke and sizzle and, as you can see, does not turn brown and sticky. When a thermoplastic cools off, it is analagous to refreezing water to make ice. In other words, no destruction has occured when it was heated and then cooled.
By looking at the pictures below, you can see the difference between thermoset urethane and a thermoplastic. In the past, all urethane bumpers were easy to identify because they were yellow. However, the newer urethane bumpers are gray and look similar to the thermoplastics.
In the pictures below, the thermoset urethane bumper has a color that closely matches the color of the thermoplastic bumper. This has caused confusion as to the correct repair procedure.
Thermoset urethane |
Thermoplastic |
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