Talk:Epoxy/Archive 2012

1-part epoxy?

Could someone with some knowledge in this area explain, or at least refer to a site, how a 1-part epoxy (no separate hardener, I assume) works?

Oops, I could've *sworn* I signed this. --Joe Sewell 17:42, 21 November 2005 (UTC)

Some epoxies require a certain heating aspect in order to cure - certain temperature for certain time. In this case, you can mix the two parts together, but they won't cure until the heating has been carried out, or at least they will cure very very slowly. I would guess that this is what a the 1-part epoxy you're talking about is. -chc

Another type of 1-part epoxy is a Powder Coating type known as Fusion Bonded Epoxy (FBE coating). This, as final product, is a one component powder coating. Infact, the powder coating contains the epoxy, hardeners, fillers and extenders, but they all are blend and in a powder form at ambient temperature. Please refere to the article in Wikipedia "Fusion Bonded Epoxy Powder Coatings" for details. I have edited the section "Paint and Coatings" in the main article to incldue FBE coatings in the text.

Penguine_s, January 25, 2006

Hi all. Also, one system are water-borne epoxy coatings. The resins are kept in a suspension, similarly to say, acrylic latex, etc. When the film is applied, the water evaporates and a film forms in which the resins are able to meet and fuse. 24.85.143.66 (talk) 04:42, 31 January 2011 (UTC)

Does anyone else think the caption below the picture of epoxy curing on a surfboard fin sounds like an advertisement for the mentioned brand of epoxy?

I have seen many spray paints that are sold as "epoxy". They're usually white and advertised as a repair paint for washers/dryers/fridge/etc. They are single part spray cans. Does anyone know if there's something special about these paints that allow them to be called epoxy, or is this just marketing BS? Gcronau (talk) 15:06, 2 February 2012 (UTC)Gcronau

Paints and Coatings

The first paragraph of this section reads as if it was lifted from the marketing brochure of a particular product. The facts might be right for that one particular product, but they are wrong for the category as a whole. Epoxy paints are mixed in any number of different ratios, depending on the product, not just 4:1. 2:1 is much more common. They also often have a high volitile content, and most *don't* clean up in just water. This paragraph should probably be removed and replaced with something that better describes the category. Gcronau (talk) 15:22, 2 February 2012 (UTC)gcronau

epoxy breakdown

Flapityjack (talk) 09:22, 14 May 2012 (UTC)Hello, I appeal to anyone knows about it: I have more interest in how epoxy can be broken down. There are some suggestions that extreme heat, alcohol or some very toxic chemicals may be of use, but several times it is mentioned that epoxy is subject to deterioration by UV light, so I would surmise this could be a way (though I wonder how long it would take)? I am interested in regards to world wide pollution by plastics. Is epoxy one of the things that's ending up in the Great Pacific Gyre (Great Pacific Rubbish Patch), starving birds bellies etc? If so, how to break it down safely is obviously a very important issue. Please address! Thank you.Flapityjack (talk) 09:22, 14 May 2012 (UTC)

Epoxies are highly cross linked and unreactive. UV deterioration is slow. Your interest in the environment is laudable. But action without knowledge is a recipe for disaster. You surely can't believe that only good intentions are necessary to fix the world?!? Spending energy tilting at windmills is at best ignorant. It is not up to us to research your concerns. If you want to know the composition of the GPG, there have been numerous articles written. Go. Read. them. Epoxies can best be broken down by burning, because of the high temperatures necessary for the aromatic rings (this is all over your head, isn't it?), it may be most effective just to bury them. That way their carbon is sequestered, probably for a very long time.71.31.152.220 (talk) 20:04, 23 August 2012 (UTC)