We all know that you should always try and run a color concentrate with a carrier resin that matches the material that you running it in. But what if you don’t have the right color concentrate?
One the biggest technological advancements in plastics over the last 30 or so years have been the improvement in UV stability. I can remember how fast vinyl dashboards in cars used to split and crack from sunlight exposure. Today, you rarely see that until the car has been in the junk yard for a few years. Even white vinyl siding and fencing seem to hold their color reasonably well for a decade or more. This is thanks to additives manufacturers developing really sophisticated stabilizers and anti-oxidants that can be compounded into various plastic materials.
In this post, I wanted to de-mystify what causes UV damage to plastics and how UV stability is tested.
Everyone have a fun and safe 4th.
There is an excellent albeit highly technical article in the April 2016 SPE magazine, Plastics Engineering, about the differences between thermoplastic elastomers (TPE) and thermoset rubber. You can read it here.
Because I talk primarily about thermoplastics here at The Weekly Pellet, I thought that I might expand on the article a little bit and talk about the different types of TPE that are commercially available.