Epoxy resin (Epoxy) is a polymer based on bisphenol A (Bisphenol A) and epichlorohydrin (Epichlorohydrin) reaction , used in everyday life quite broad, such as adhesives, dental materials, plastic infusion products, reinforced plastic , civil construction materials, electrical insulation products , and so on . In addition, Epoxy -based system the paint , but also makes its adhesion , resistance to chemicals ( in particular alkali ) , abrasion resistance, electrical insulation and other features on its head , it is often used in food plants, pharmaceutical plants ( GMP), electronic factories, hospitals and other plant or working environment clean and hygienic conditions require higher places , or where higher chemical resistance requirements of the petrochemical industry , chemical plants and so on.
Can be divided water-based and oil-based epoxy resin , both widely used in electronics plants, food plants and pharmaceutical plants and other plant wall and floor coating . Oily solvent-based and can be divided two kinds of solvent-free .
Epoxy type ( a ) esterified (b ) heat -curing (c ) at room temperature hardening type ... , of which the third type , both in workability , so the workability is better quality characteristics , it is more generally used . The so-called hardening at room temperature , which is the main agent for epoxy resin (A agent ) , adding the proportion of the amount of polyamide (Polyamide) or polyamines (Polyamine) hardener (B agent ) , both uniformly mixed with each other , through after applying , at room temperature by a certain time that self- crosslinking reaction from the two-component paint dry . This type of paint when used, must be specified by the manufacturer at the ratio of mixing can be used after mixing evenly, because the mixed use of time (Pot life) are limited by , and therefore must be used within a limited time after mixing , otherwise the paint the hardened material is not available, use painting tools Always clean after .
The physical and chemical properties than epoxy coating polyurethane (PU) coating is excellent , because the epoxy can not be anti- ultraviolet radiation, ultraviolet radiation , after the film prone to fading and chalking phenomenon, it 's painted outdoor structures equipment, most of which use the PU topcoat paint based.