Epoxy.org

Up until recently, the idea of an epoxy spray paint has been a thing of fiction. Of course, this hasn’t stopped numerous brands from cashing in on the popularity that epoxy and epoxy products have gained in the past few years. Big companies are all to happy to put a name like ‘epoxy’ on one of their products, even if that isn’t quite true. For the most part, these sprays behave in ways that mimic the best qualities of epoxy. But in the end they are nothing more than spray paints that stay waterproof for… a while.
The thing is, epoxy must be mixed prior to application. As we discussed in “What is Epoxy?,” epoxy is a two part compound that cures when mixed together. You can’t exactly have a true epoxy paint in an aerosol can and expect anything to come out after more than a few [...]

We’ll get to the practical side of things shortly, but epoxy is actually the result of a very interesting and complex chemical reaction. Known as a thermosetting polymer (also known as a thermoset; a polymer that irreversibly cures), epoxy is the result of a reaction between an epoxide (resin) and polyamine (hardener). Lucky for all of us, and contrary to some beliefs, polyamine is legal outside of Utah, which allows all of us to enjoy the benefits of epoxy. So, what is epoxy? The important thing to know is that epoxies are two-part polymers. That is, by definition, epoxy must be composed of two parts that are mixed together. It can be a glue, paint, putty, etc. In each case, a true epoxy will have both a “resin” and a “hardener,” and that is the first and most important thing to note.
Now, for those of you interested [...]