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    Home > Coatings News > Paints and Coatings Market > Coating technology: anti condensation coating construction

    Coating technology: anti condensation coating construction

    • Last Update: 2020-04-03
    • Source: Internet
    • Author: User
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    Core tip: anti condensation coating Anti condensation coating belongs to thick film light functional building coating

    The thick coating formed by plastering or spraying can not only have decorative effect on the painted structural parts, but also prevent the surface condensation

    The anti condensation performance of anti condensation coating lies in its hygroscopicity and dehumidification, that is, the film formed by anti condensation coating has several characteristics: first, it has a certain thickness (hygroscopic volume); second, the film is porous, with connected pores inside, which can accommodate the condensate adsorbed on the surface

    In this way, when the water vapor in the air condenses on the coating surface due to the temperature difference, 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

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    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 Coating home news: anti condensation coating anti condensation coating belongs to thick film light functional building coating

    The thick coating formed by plastering or spraying can not only have decorative effect on the painted structural parts, but also prevent the surface condensation

    The anti condensation performance of anti condensation coating lies in its hygroscopicity and dehumidification, that is, the film formed by anti condensation coating has several characteristics: first, it has a certain thickness (hygroscopic volume); second, the film is porous, with connected pores inside, which can accommodate the condensate adsorbed on the surface

    In this way, when the water vapor in the air condenses on the surface of the film due to the temperature difference, the water generated by the condensation will be absorbed in the film, so as to prevent the appearance of dew on the surface and achieve the purpose of anti condensation

    The stronger the adsorption of the film, the more water it can hold per unit volume (area), the better its anti condensation performance

    The adsorbed water stored in the film will escape into the air through evaporation when the air conditions change (for example, the temperature of outdoor environment increases, the relative humidity in the air decreases, etc.), and will gradually be in a dry state

    In this way, when the condensation occurs again, the condensate can be adsorbed to prevent condensation

    Therefore, for buildings with serious condensation and anti condensation coating, necessary ventilation should be kept at intervals

    Precautions for base treatment ① for wooden base, in order to prevent the paint from seeping into the base, the base treatment must be carried out with sealing primer

    ② For the concrete base course, the uneven base course caused by local repair, defects of plywood formwork, unevenness and corrosion of base course caused by through wall bolts and nails, etc., shall be treated with sealing primer

    ③ For the base with strong water absorption performance, such as aerated concrete, the sealing primer which can prevent the white cement anti condensation coating from drying too fast shall be used for treatment

    ④ In order to prevent the joints of gypsum board and asbestos board from cracking and uneven water absorption, the base course shall be pretreated

    ⑤ For the thin steel plate, iron plate and other metal base, the construction must be carefully checked before construction, and the construction shall be carried out after it is confirmed that there is no condensation, and at the same time, the antirust treatment shall be carefully done

    Brief description of anti condensation coating construction anti condensation coating is thick coating, generally adopt plastering or spraying construction

    For the white cement anti condensation coating to be mixed on site, attention shall be paid to mix the powder and glue evenly according to the manufacturer's instructions

    Generally, a low-speed hand-held mixer is used for mixing to prevent crushing the coarse and light fillers

    In order to prevent uneven absorption at the base level, the acrylic emulsion can be used to seal the primers or other closed primers

    Precautions for anti condensation coating construction: during the construction, attention shall be paid to the absence of construction defects such as uneven absorption of base course, sagging, missing coating, etc

    If the coating thickness required by the design is relatively large, the coating can be divided into several times when one-time plastering or spraying produces sagging, but the construction of the next time shall be carried out after the previous coating is dry and has a certain bearing strength

    Good ventilation conditions shall be maintained after construction so that the coating can be dried as soon as possible

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