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    Home > Coatings News > Paints and Coatings Market > How are waterproof coatings classified?

    How are waterproof coatings classified?

    • Last Update: 2021-03-24
    • Source: Internet
    • Author: User
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    1.


    Solvent-based waterproof coating

    In this type of paint, the polymer material, which is the main film-forming substance, is dissolved in an organic solvent to become a solution.


    The polymer material exists in the solution (paint) in a molecular state.


    This type of coating has the following characteristics:

    ① Through the volatilization of the solvent, through the process of molecular chain contact and overlap of the polymer substance, the conjunctival com" href="http://">coating is online coatingol.


    com .


    ②The coating dries quickly, and the conjunctiva is thin and dense.

    ③The production process is simpler and the paint storage stability is better.

    ④It is flammable, explosive, and toxic.
    Pay attention to safety during production, storage and use.

    ⑤As the solvent evaporates quickly, it will pollute the environment during construction.

    2.


    Water emulsion type waterproof coating

    This type of waterproof coating is used as the main film-forming material of the polymer material to stably suspend (rather than dissolve) in the water with very small particles (rather than in a molecular state), and become an emulsion coating.

    This type of coating has the following characteristics:

    ① Through the evaporation of water, the conjunctiva is formed through the process of solid particles approaching, contacting, and deforming.

    ②Drying of coatings is slower, and the compactness of one-time film formation is lower than that of solvent-based coatings.


    Generally, it is not suitable for construction below 5°C.


    ③The storage period is generally not more than half a year.

    ④It can be constructed on a slightly damp base.

    ⑤Non-toxic, non-flammable, relatively safe to produce, store and use.

    ⑥Easy to operate and does not pollute the environment.

    ⑦Low production cost.

    3.


    Reactive waterproof coating:

    In this type of coating, the polymer material, which is the main film-forming substance, exists in the form of a prepolymer liquid, and the coating is mostly composed of two-component or single-component, and it contains almost no solvent.



    This type of coating has the following characteristics:


    ① The liquid polymer prepolymer reacts chemically with the corresponding substance to become a solid substance (conjunctiva).


    ②It can be formed into a thicker coating film at one time, without shrinkage, and the coating film is dense.


    ③Two-component coatings need to be accurately mixed with 1:2 on site and mixed evenly to ensure quality.


    ④The price is more expensive.


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