The most commonly used are the polyesters. They result from combining polybasic acid (saturated, unsaturated) with glicoles. Of the various compounds used and the different proportions including, various kinds of resins sugen. In this first stage, They are solid and polymerization properties confer, be dissolved in a monomer level (usually styrene), give a thick liquid. Resins go from liquid to solid, polyester by copolymerization, with input from an active initiator (catalyst) in combination with other chemical (accelerator) the contribution of heat.
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Polyester Resin ortoftálica:
These are general-purpose resins, commonly used with the structural fabric and slightly aggressive media. La operating temperature are constant in Regimen of 60 º C.
Polyester Resin ortoftálica:
These are the most used resins, possess excellent moldability, moderate cost and work well over a wide range of acids and inorganic salts. These are indicated by driving water and Sewers, even in very aggressive soils. The working temperature can reach 70 ° C.
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Bisphenol polyester resins::
They are resistant to corrosion, exhibit excellent behavior, with acid agents and alkali agents to. Its temperature resistance makes it suitable to withstand temperatures up to 103 ° C. There retardant resins infield of bisphenol flame, self-extinguibles e ignífugas.
Vinylester resins:
The epoxy vinylester resins are heat-fixed product of chemical modifications resulting from initial structures epoxy, to which are added aggregates double bonds and vinyl esters. They come in several categories, ranging from a high resistance to corrosion in chemical environments, at high temperatures up an excellent response to the mechanical requirements.
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