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    Home > Coatings News > Paints and Coatings Market > Common knowledge of coating: how to choose water-based epoxy floor hardener

    Common knowledge of coating: how to choose water-based epoxy floor hardener

    • Last Update: 2020-04-03
    • Source: Internet
    • Author: User
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    Core tip: China new coating news: waterborne epoxy floor coating is getting more and more widely used As the leading product of floor coating, the advanced variety of epoxy resin based floor coating, its performance improvement has been paid attention to by people all the time, and the research on the selection of solidifying agent which plays an important role in film-forming has been fruitful recently When the curing agent reacted with epoxy group is used, the effective crosslinking density of epoxy resin with high epoxy value after full curing is large It has strong resistance to corrosive medium through coating; the epoxy resin with low epoxy value is the opposite, but the high crosslinking density is easy to make the coating brittle, so active diluent is added into the epoxy resin component live Paint agent, top 10 Chinese wall paint brands Recommended introduction: interior wall paint and exterior wall paint can achieve beautiful, clean and pleasant effects, but the effects in different environments are different, so the color of the paint will be different There are ten brands of Chinese paint, ten brands of global paint, ten brands of Chinese wall paint, and ten brands of Chinese paint, Famous trademark of Chinese paint and coating In private rooms, most of us choose according to our own personality, personal hobbies and living habits The younger generation will choose the interior wall paint with rich colors and bright colors, while the older ones will have some working experience Home of coatings news: China new coatings news: waterborne epoxy floor coating is getting more and more widely used As the leading product of floor coating, the advanced variety of epoxy resin based floor coating, its performance improvement has been paid attention to by people all the time, and the selection of curing agent, which plays an important role in film-forming, has made achievements recently When the curing agent reacted with epoxy group is used, the effective crosslinking density of epoxy resin with high epoxy value after full curing is large It has strong resistance to corrosive medium through coating; the epoxy resin with low epoxy value is the opposite, but the high crosslinking density is easy to make the coating brittle, so active diluent is added into the epoxy resin component Active diluent can reduce the viscosity of paint, increase the easy mixing of curing agent and epoxy resin during construction, make the emulsifying function of curing agent to epoxy resin easier to play, and active diluent itself can directly participate in the reaction of curing agent without producing VOC The selection of curing agent is very important for the preparation of waterborne epoxy floor coating The water-based epoxy coating is a multi-phase system, the epoxy resin is a dispersed phase, and the curing agent is a continuous phase (for water-soluble curing agent) In general, the curing process is controlled by diffusion The curing reaction takes place at the interface first, and the surface roughness of epoxy particles increases gradually At the same time, the curing agent diffuses into the epoxy resin to further cure the epoxy resin The smaller the particle size of epoxy emulsion, the closer the curing is; the better the compatibility between curing and epoxy resin, the easier the curing agent will diffuse into epoxy resin, which is beneficial to curing The commonly used water-based curing agents include fatty gum adduct, alicyclic gum adduct, polycarbonate, polycarbonate adduct, etc The short service life, too fast curing speed and too fast increase of the surface roughness of epoxy particles are not conducive to the deep diffusion of curing agent to epoxy particles, incomplete curing and unsatisfactory film performance The components and miscibility of the curing agent and epoxy resin are not good and there is induction period, which can be overcome by the addition of polyacyl resin In China, the water-soluble polycarbonate adduct is selected as the curing agent of this system, which has good wettability to wet concrete base surface and can be drained to cure Even in the wetter base, it has a good curing performance, which solves the problem of construction difficulty of solvent based epoxy floor coating wet surface Home of coatings is specialized in coatings, diatom mud, paint coating, coating technology, fire retardant coating news and coating, diatom mud, paint coating, coating technology, fire retardant coating decoration knowledge and decoration renderings,
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