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    Home > Coatings News > Paints and Coatings Market > Coating process: production and operation procedures for emulsion paint

    Coating process: production and operation procedures for emulsion paint

    • Last Update: 2020-04-03
    • Source: Internet
    • Author: User
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    Core tips: latex paint is composed of emulsion, pigment, filler, auxiliaries and water

    Emulsion is the most important raw material for the performance of latex paint

    It is usually synthetic resin emulsion

    The common varieties of synthetic resin emulsion are polyvinyl acetate, acetic acid, vinegar, vinegar, TERT, VAE, styrene, acrylic, silicon, acrylic, fluorocarbon emulsion, etc., which are made of some petrochemical raw materials such as vinyl acetate, acrylic ester, styrene and so on

    It has the properties of adhesion, water resistance, alkali resistance and anti-aging

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    When the indoor air is relatively dry, the wall of diatom mud will absorb the water Paint Home: latex paint is composed of emulsion, pigment, filler, auxiliaries and water

    Emulsion is the most important raw material for the performance of latex paint

    It is usually synthetic resin emulsion

    The common varieties of synthetic resin emulsion are polyvinyl acetate, acetic acid, vinegar, vinegar, TERT, VAE, styrene, acrylic, silicon, acrylic, fluorocarbon emulsion, etc., which are made of some petrochemical raw materials such as vinyl acetate, acrylic ester, styrene and so on

    It has the properties of adhesion, water resistance, alkali resistance and anti-aging

    Most of the emulsion paint is white or light color based on white, and titanium dioxide and lithopone are mainly used as pigments

    Most color pigments are harmless to human body

    But poor pigments contain lead

    The filler plays a filling role

    Commonly used fillers include calcium carbonate (white powder), talcum powder, kaolin (porcelain clay), barium sulfate (barite powder), wollastonite powder, etc., which are natural mineral raw materials and harmless to human body

    There are many ingredients in the auxiliaries

    There are additives, film-forming AIDS and fungicides

    In order to prevent the emulsion paint from settling in the process of storage and from falling when brushing the vertical surface, additives such as additives should be added, commonly cellulose ethers

    In order to dry the emulsion paint film and prolong the construction season under the condition of low temperature, some film-forming aids are usually added by manufacturers, such as polyols and their derivatives

    Emulsion paint is easy to be polluted by microorganism during storage or after drying and film forming

    In order to prevent the growth of microorganism, the manufacturer should add bactericide

    Production feeding process: water; microbicide; film forming AIDS; thickener; pigment dispersant; defoamer, wetting agent; pigments and fillers; emulsion; pH regulator; other auxiliaries; water and / or thickener solution

    Operating procedures: put the water into the high-speed mixer first, and then add the microbicide, film-forming agent, thickener, pigment dispersant, defoamer and wetting agent at low speed

    After mixing evenly, sieve the pigment and filler slowly into the vortex stirred by the impeller

    Soon after adding pigments and fillers, the abrasives become thicker

    At this time, the distance between the impeller and the bottom of the mixing barrel shall be adjusted to make the vortex into a shallow basin

    After adding the finishing filler, the impeller speed shall be increased (the linear speed along the wheel is about 1640m / min)

    In order to prevent excessive temperature rise, it is necessary to stop for cooling, and scrape off the color and filler adhering to the barrel edge when stopping

    Measure the fineness of the blade at any time

    When the fineness is qualified, the dispersion is completed

    After dispersing, slowly add emulsion and pH adjustment agent at low speed, then add other auxiliaries, then adjust the viscosity with water and / or thickener solution, screen out the material

    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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