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Hardeners which show only low or limited reactivity at ambient temperature, but which react with epoxy resins at elevated temperature are referred to as latent hardeners. When using latent hardeners, the epoxy resin and hardener may be mixed and stored for some time prior to use, which is advantageous for many industrial processes.
Paints may then be made from them by pigmenting either the epoxy or the amine hardener portion or even both. [12] [13] Polyamine curing resins as opposed to polyaminoamide resins are generally made by partially adducting polyfunctional amines with an epoxy resin and/or epoxy diluent and leaving the species with residual amine functionality ...
But the thicker epoxy paints will last years longer than even two or three coats of the basic acrylic or latex paint. ... Two-part epoxies require that you mix a separate hardener/catalyst into a ...
Epoxy resins are typically cured by the use of additives, often called hardeners. Polyamines are often used. The amine groups ring-open the epoxide rings. In rubber, the curing is also induced by the addition of a crosslinker. The resulting process is called sulfur vulcanization.
As an epoxy modifier it is classed as an epoxy reactive diluent. [8] It is one of a family of glycidyl ethers available used for viscosity reduction of epoxy resins. [9] These are then further formulated into coatings, sealants, adhesives, and elastomers. [10] [11] Resins with this diluent tend to show improved workability. [12]
Since 2000, however, epoxy and polyurethane resins are used in interiors as well, mainly in Western Europe. Synthetic casting "resin" for embedding display objects in Plexiglas/Lucite ( PMMA ) is simply methyl methacrylate liquid, into which a polymerization catalyst is added and mixed, causing it to "set" (polymerize).
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