Coating formula: mould proof coating formula

Core tip: anti mold coating is composed of base material, pigment (filler), coating additive and anti mold agent 1 base material The film-forming materials of the coating shall not contain or contain less nutrients for the growth and propagation of microorganisms, and the film formed shall have sufficient water resistance and washing resistance General water base material Because water-based material is compatible with mould inhibitor, it has no chemical reaction with mould inhibitor, and has strong moisture regain, strong cohesive force and stable performance Generally selected organic base materials include styrene acrylic emulsion, chlorinated emulsion and ethylene vinyl acetate (VAE) emulsion Paint knowledge | precautions for wall paint color selection Recommended introduction: when painting the wall, the owner sometimes has difficulty in choosing what color of the wall paint to paint In fact, there is no ugly color in the wall paint, only the disharmonious color matching The use of wall color contains the knowledge of health Too strong color will stimulate people's perception, make people have a sense of fidgety, affect people's mental health Grasp the basic principles of wall color and paint a colorful space 1、 Wall paint color selection notice 1 Light color is generally used for the top surface Light colors make people feel light, dark colors make people feel heavy Usually, the treatment of rooms is from top to bottom, from shallow to deep For example, the ceiling and walls of rooms are white and Coating home news: anti mold coating is composed of base material, pigment (filler), coating additives and anti mold agent and other materials 1 The film-forming substances of the base material coating shall not contain or contain less nutrients for the growth and propagation of microorganisms, and the film formed shall have sufficient water resistance and washability General water base material Because water-based material is compatible with mould inhibitor, it has no chemical reaction with mould inhibitor, and has strong moisture resistance, strong adhesion and stable performance Generally speaking, organic base materials are styrene acrylic emulsion, chlorinated emulsion and ethylene vinyl acetate (VAE) emulsion Inorganic base materials include silicate, silica sol and so on Mildew proof coating with good physical properties and decoration effect 2 The addition of pigment and filler can increase the thickness of the film, and also improve the alkali resistance, wear resistance and durability of the film Especially in high-temperature production environment, good environmental sanitation is the key to prevent mildew, at the same time, to prevent the bacteria brought by the purchased raw materials Titanium dioxide is generally used as filler, preferably rutile type, because its performance is relatively stable, covering power, light resistance and powdering resistance are very good, and aluminum silicate functional filler which is helpful to improve the technical performance of coating should be selected The mica powder of small fish's scale silver flash has great elasticity, which can improve the toughness of the coating, prevent the penetration of ultraviolet and water, prevent the cracking, delay the pulverization, enhance the durability and weatherability of the coating, improve the covering power, and reduce the film-forming temperature of the coating Other fillers such as calcium carbonate, lithopone, talcum powder and white clay can be added appropriately according to the coating performance Carbon black, iron oxide red, iron oxide yellow, phthalocyanine blue and other pigments are commonly used in coatings, which have good alkali resistance, water resistance and UV resistance Generally, one or more of them can be used in combination If conditions permit, nano or ultra-fine materials are better used in the production of pigments and fillers 3 The thickeners commonly used in general coatings, such as shuttle methyl cellulose, polyvinyl alcohol, etc., are very prone to mildew and cannot be used to prepare anti mildew coatings Other additives are also selected according to the principle of whether they are prone to mildew 4 Fungicide fungicide is a kind of chemical substance which can kill or inhibit the growth and reproduction of bacteria and microorganisms Generally, the fungicide used in building materials should meet the following conditions: (1) at a lower concentration, it has a broad-spectrum and long-lasting high-efficiency bactericidal or inhibitory ability to mold, bacteria, yeast and other microorganisms (2) It is non-toxic or low toxic, has no irritating effect on human eyes and skin, and has no adverse effect on human body Ld of acute oral administration of animals should be more than 500 mg / kg, preferably 5000-15000 mg / kg (3) It is stable in the coating, and can mix well with the coating without changing the original color and other physical and chemical properties of the coating (4) It can be evenly distributed in the coating (5) Low price, abundant supply and convenient use Mold inhibitor is the key component of mold resistant coating The test shows that in order to achieve satisfactory effect, it is better to adopt "compound type" for coating anti mildew agent The so-called "compound type" is to add two or more anti mildew agents to one coating at the same time, so as to achieve the best effect Of course, the dosage of the compound proportion should be determined by experiments Formula example: Formula 1: content / weight of ethyl acrylate / styrene copolymer 4.0 calcium carbonate 1.5 dimethylbenzyl dodecyl ammonium bromide 0.01 magnesium oxide 0.1 silicon dioxide 0.3 casein 0.8 water 3.0 the coating has strong water resistance, and the coating surface will not peel off under dry air and humid air It is mainly used for painting wet surfaces such as basement and bathhouse, and also suitable for buildings with high temperature Formula 2: ingredient dosage / mass fraction water 250 dispersant SN-5040 (polycarboxylate sodium, 40%) 5 phosphate three butyl ester 2 emulsifier OP-10 1.5 hydroxyethyl cellulose 150 titanium white powder 100 talcum powder + mica powder 50 zeolite powder 200 acrylic emulsion, 200 1,2- propylene glycol, hydroquinone pesticide fungicide, building stone sterilizing coating (the formula of this article is for reference only) coatings home is focused on the news and information of coatings, diatom mud, paint coatings, coating technology, fire retardant coatings, coatings, diatom mud, paint coatings, coating technology, decoration knowledge and decoration effect map of fire retardant coatings,