CN101210143A - Environment-friendly type long-acting mildew-resisting paint and preparing method thereof - Google Patents
Environment-friendly type long-acting mildew-resisting paint and preparing method thereof Download PDFInfo
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Abstract
The invention relates to a mildew resistant coating and a preparation method thereof. The main contents of the mildew resistant coating by weight percentage are 10-40 percent of acrylate emulsion, 0.1-2.0 percent of mould inhibitor, 0.05-0.5 percent of fungicide, 5-25 percent of pigment, 10-40 percent of filler, 0.1-1 percent of dispersant, 0.05-1 percent of wetting agent, 0.2-5 percent of thickener, 0.1-3 percent of flatting agent, 0.4-4 percent of film-forming additive, 0.5-5 percent of cryoprotective agent, 0.02-1 percent of defoamer, 0.05-2 percent of pH regulator, and 5-35 percent of deionized water. The sum of all components is 100 percent.
Description
Technical field:
The present invention relates to a kind of mould inhibitor, mould-repellant coating and preparation method thereof.
Background technology:
In a lot of industrial production fields, especially be rich in the organic materials or the products production environment in microbial nutrition source, for example in the industries such as food, pharmacy, beverage, wine brewing, leather, grain, also often adopt coating as building interior and exterior finishes material.But; because the singularity of these industry production environment; breeding and the growth of all very suitable mould of humidity and temperature and bacterium, quite serious in the inwall and the top ceiling mildew situation of production plant, extensively the mould that exists is found everywhere; the contaminate environment that it is direct or indirect; make that agricultural byproducts and industrial goods are mouldy, variable color, rotten, communicate illness also, comes off and loses protection, decoration functions at the efflorescence that simultaneously also can cause filming; environment is polluted, and disporduct jeopardizes HUMAN HEALTH.In addition, for carrying out country's " Good Manufacturing Practice and Quality Control of Drug " (GMP), the design of the pharmaceutical products of newly-built, reconstruction and enlarging, medicine industry, clean room all there has been clear and definite requirement.Coating mildew-resistant problem comes into one's own at home day by day, and the cry of exploitation high-performance mould-repellant coating is very high.
Domestic present mould-repellant coating kind seldom, poor in timeliness, can not satisfy the demand in market.In existing mould-repellant coating kind, what performance was good is solvent based coating mostly, but it is unfavorable for environment protection, especially is unsuitable for using in places such as hospital, biotechnological formulation workshops; And also big mercury class (Phenylmercuric Acetate, phenylmercuric chloride) phenols (Pentachlorophenol and sodium salt thereof) and the tin compounds (tributyltin chloride, tributyltin oxide etc.) of some toxicity that adopt of mould inhibitor more.Therefore, press for the high-performance mildew-resistant water-borne coatings of environment-friendly type.
Adopting high-performance mildew-resistant water-borne coatings is that a kind of economy is convenient, effective, the good method of easy popularization.With long lasting mildew resistance certain technical difficulty is arranged though give nontoxic, tasteless, as to have environmental protection characteristics water-borne coatings, meet the developing direction of building coating and the needs of above-mentioned production industry, its product is easily in line with international standards.Abroad, the research of water mildow-proof coating and mould inhibitor thereof is very active, constantly has new mould inhibitor kind to enter China, for condition has been created in the exploitation of domestic high-performance mildew-resistant water-borne coatings.
The present invention is different from three Chinese patents of CN1240578A, CN1289727A and CN200410067279.1, key is to select for use good organic mildew-resistant to prevent algae feedstock production environment-friendly type long-acting mildew-resisting paint, and in conjunction with the special construction rules, prolong the mould-repellant coating life-span, and effects such as long-acting, the wide spectrum, low toxicity of mould-repellant coating, attractive in appearance, environmental protection are brought into play better, and reach the effect that prolongation is brushed the cycle again, cut down the consumption of energy.
Summary of the invention:
The technical problem to be solved in the present invention: the one, how to design the environmental-protecting performance of above-mentioned particular surroundings with mould-repellant coating; The 2nd, how further to improve the antibacterial and mouldproof effect of above-mentioned particular surroundings with mould-repellant coating; The 3rd, combine with mould-repellant coating with particular surroundings by the special construction rules, prolong the effectiveness and the life-span of mould-repellant coating.
The present invention realizes that the technical scheme of above-mentioned purpose is: prepare a kind of environment-friendly long-acting mildew-resistant water-borne coatings, and in conjunction with the special construction rules, solve the technical problem that prolongs environment-friendly type mould-repellant coating life-span and effect.
(1) main ingredient of this coating and weight proportion thereof are:
It is by acrylic ester emulsion, mould inhibitor, sterilant, pigment, filler, dispersion agent, wetting agent, thickening material, flow agent, film coalescence aid, antifreezing agent, defoamer, pH regulator agent and deionized water are formed, and their weight percent is acrylic ester emulsion 10%-40%, mould inhibitor 0.1%-2.0%, sterilant 0.05%-0.5%, pigment 5%-25%, filler 10%-40%, dispersion agent 0.1%-1%, wetting agent 0.05%-1%, thickening material 0.2%-5%, flow agent 0.1%-3%, film coalescence aid 0.4%-4%, antifreezing agent 0.5%-5%, defoamer 0.02%-1%, the 0.05%-2%pH conditioning agent, deionized water 5%-35%.
Each component optimum weight per-cent is acrylic ester emulsion 30%, mould inhibitor 1.5%, sterilant 0.2%, pigment 17%, filler 23%, dispersion agent 0.5%, wetting agent 0.1%, thickening material 1%, flow agent 0.5%, film coalescence aid 2%, antifreezing agent 2%, defoamer 0.5%, pH regulator agent 0.2%, deionized water 21.5%.The total amount of above-mentioned each component should be 100.
Acrylic ester emulsion is any one or any being mixed more than two kinds in pure-acrylic emulsion, styrene-acrylic emulsion, the organosilicon crylic acid latex, and its proportioning is any proportioning during any being mixed more than two kinds;
Mould inhibitor is one or two or more kinds is mixed in urine derivative, thiram and the diformazan ammonia zinc sulfate of octyl group-isothiazolinone, two chloro-n-octyl groups-4-isothiazoline-3-ketone, nitrogen-2-methyl-4-isothiazoline-3-ketone, 2-methyl-4-isothiazoline-3-ketone, aryl, and its proportioning is any proportioning during any being mixed more than two kinds.Be preferably urine derivative, thiram and the diformazan ammonia zinc sulfate mixture of nitrogen-2-methyl-4-isothiazoline-3-ketone, octyl group-isothiazolinone and two chloro-n-octyl groups-4-isothiazoline-3-ketone and aryl, more preferably the urine derivative of octyl group-isothiazolinone or two chloro-n-octyl groups-4-isothiazoline-3-ketone and aryl, thiram and diformazan ammonia zinc sulfate mixture.The urine derivative of described aryl is imino-alkoxyl phenyl uridylic, 1-amino-3-phenyl uracils, 1-aryl-3,3-dimethyl urea, sulfonamido phenyl uracils, phenylpropyl alcohol uridylic, diethyl thiourea, 1-naphthyl thiourea etc.
Pigment is any one or any being mixed more than two kinds in titanium dioxide, zinc oxide, zinc sulfide white, iron oxide yellow, red iron oxide, carbon black, toluidine red, organic yellow, phthalocyanine blue, ultramarine, phthalocyanine green, the chromoxide green, and its proportioning is any proportioning during any being mixed more than two kinds.
Filler is any one or any being mixed more than two kinds in water-ground limestone, light calcium carbonate, talcum powder, calcined kaolin, mica powder, wollastonite powder, superfine alumina silicate, ground barium sulfate, silica powder, the white carbon black, and its proportioning is any proportioning during any being mixed more than two kinds.
Dispersion agent, wetting agent, sterilant, thickening material, flow agent, film coalescence aid, antifreezing agent, defoamer, pH regulator agent are auxiliary agent commonly used during emulsion paint is produced.
Prepare the method for environment-friendly long-acting mildew-resistant water-borne coatings, may further comprise the steps:
(1) batching:
By each weight percentages of components acrylic ester emulsion is 10%-40%, mould inhibitor 0.1%-2.0%, sterilant 0.05%-0.5%, pigment 5%-25%, filler 10%-40%, dispersion agent 0.1%-1%, wetting agent 0.05%-1%, thickening material 0.2%-5%, flow agent 0.1%-3%, film coalescence aid 0.4%-4%, antifreezing agent 0.5%-5%, defoamer 0.02%-1%, 0.05%-2%pH conditioning agent, deionized water 5%-35%.It is stand-by to prepare burden.
(2) slurrying:
Under disperseing to stir, low speed (200-600rpm) adds deionized water, sterilant, dispersion agent, wetting agent, antifreezing agent, defoamer, flow agent successively, after mixing, disperse to stir and slowly add pigment and filler down, finish, high speed (800-2000rpm) disperses to stir, and uses the sand mill high speed dispersion to fineness≤45 μ m again.
(3) paint:
Under middle low speed (400-800rpm) disperses to stir, add film coalescence aid, acrylic ester emulsion gradually, adjust emulsion paint pH value in 8.3 ± 0.2 scopes with the pH regulator agent, adding mould inhibitor stirs evenly, and adjust viscosity to the 30 ± 2mPas (25 ℃) of emulsion paint with thickening material, make environment-friendly type long-acting mildew-resisting paint after the filtration.
(2) construction regulations
Mould-repellant coating is intermediate commodity at last in fact, is only the finished product through the coating that forms after the construction brushing operation.And the performance of coating is not just determined by coating, with construction regulations confidential relation is arranged also, can be found everywhere, emphasize the significance of coating application rules that is in this because of construction wrong causes the example of application failure, particularly mould-repellant coating will be realized long-lasting, reasonable that construction regulations is particularly important.
Common execution of coating generally comprises base treatment and painting operation, and the invention is intended to make effects such as long-acting, the wide spectrum, low toxicity of mould-repellant coating, attractive in appearance, environmental protection to bring into play better, and reach the effect that prolongation is brushed the cycle again, cut down the consumption of energy, through long-term experience and summary, the contriver has invented the special construction rules of mould-repellant coating, and it comprises basic unit's mildew-resistant processing, painting operation and routine servicing three parts.
Except must be dry, clean, solid, smooth, must confirm that body of wall does not have the mould existence to the requirement of basic unit.New wall does not generally occur going mouldy very much, and old wall often was subjected to mould contamination.Because as long as a little local mould is indivisible, just it can promptly spread, so, just should remove mould processing if find or suspect have mould to exist.At first mildew is partly sprayed sterilizing agent or mildew-resistant washing lotion, fly upward all around to prevent vital spore, then, at short notice metope is thoroughly cleaned, such as, the available hot water that contains washing composition is scrubbed, handle basic unit with the mildew-resistant washing lotion then, spray 1～2 time comprehensively.Remove mould processing not only will go out the tongue silk and the spore of substrate surface, also will thoroughly kill whole moulds of infiltrating basic unit inside.
Except extremely important to the mildew-resistant processing of basic unit, realize the long-lasting of environment-friendly type long-acting mildew-resisting paint and reach the effect that prolongation is brushed the cycle again, cut down the consumption of energy, just must pay attention to routine servicing work to the fungus resistant coating surface.Because breeding and the growth of very suitable mould and bacterium under the special conditions of those high nutrients, high humidity and high-temperature, any mould-repellant coating is growing and fast breeding of mould fungus inhibition and bacterium fully all, have only by necessity to get the maintenance of special mildewproof washing lotion, just can truly realize the long-lasting of mould-repellant coating.
The mildew-resistant washing lotion that routine servicing and basic unit's mildew-resistant are handled generally is made up of mildew-resistant scavenger specially, solubility promoter and water etc.Table 1 has been introduced a kind of mildew-resistant lotion prescription of contriver's invention.When basic unit's mildew-resistant is handled, need to stain degree according to metope, directly clean 1-3 all over basic unit; And handle as routine servicing, be that to wait other dilution proportion with mildew-resistant washing lotion and water by 1: 2 or 1: 5 be low-concentration liquid, periodically sprinkle is not at coatingsurface, reaching the effect of killing coatingsurface small portion of residual survival bacterial classification and breeding thing thereof, and reach with this maintaining process and to prolong the mould-repellant coating effectiveness and the effect in life-span.
Table 1 mildew-resistant lotion prescription
| Material | Massfraction/% |
| The mildew-resistant scavenger specially | 0.01-5 |
| Solubility promoter | 0-50 |
| Water | 50-99.9 |
| Add up to | 100 |
The mildew-resistant scavenger specially can be octyl group-isothiazolinone, two chloro-n-octyl groups-4-isothiazoline-3-ketone, nitrogen-2-methyl-4-isothiazoline-3-ketone, formaldehyde and formaldehyde releasing body, naphthenic acid tri-n-butyl tin and quarternary ammonium salt compound concentrated solution etc., any one or any being mixed more than two kinds, its proportioning is any proportioning during any being mixed more than two kinds, be preferably two chloro-n-octyl groups-4-isothiazoline-3-ketone, naphthenic acid tri-n-butyl tin and quarternary ammonium salt compound concentrated solution, more preferably naphthenic acid tri-n-butyl tin or quarternary ammonium salt compound concentrated solution.Described formaldehyde releasing body is meant the material that can discharge formaldehyde under certain condition, as 2-amino-4-methoxyl group-6-methyl isophthalic acid, and 3, materials such as 5-triazine, 1,3,5-trihydroxyethyl s-triazine, Paraformaldehyde 96.Described quarternary ammonium salt compound is a kind of cats product, it also is a kind of disinfecting, antimicrobial agent, as tetrabutyl bromine ammonium, cetyl trimethyl Silver monobromide ammonium, chlorination dodecyl trimethyl ammonium, dodecyl dimethyl benzyl ammonium chloride etc., be preferably cetyl trimethyl Silver monobromide ammonium.
Described solubility promoter is butyl glycol ether, Diethylene Glycol butyl ether, diethylene glycol ether, dipropylene glycol butyl ether, dipropylene glycol ether, propylene glycol monomethyl ether, dipropylene glycol methyl ether, Virahol, ethanol, ethylene glycol, propylene glycol, neopentyl glycol mono isobutyrate etc., any one or any being mixed more than two kinds, its proportioning is any proportioning during any being mixed more than two kinds, be preferably butyl glycol ether, Diethylene Glycol butyl ether, dipropylene glycol methyl ether, Virahol, more preferably Diethylene Glycol butyl ether, Virahol.
Basic unit spray last all over the dry 24h of mildew-resistant washing lotion after, the covering with paint of beginning mould-repellant coating, its be coated with reload request and common buildings decorative paint require basic identical.
The mould-repellant coating of the present invention's preparation has long lasting antibacterial and mouldproof performance, aqueous, environmental protective function and excellent coating traditional performance; In conjunction with the special construction rules, effects such as long-acting, the wide spectrum, low toxicity of mould-repellant coating, attractive in appearance, environmental protection have been brought into play fully, and can be reached the effect that prolongation is brushed the cycle again, cut down the consumption of energy.Its characteristics are as follows:
1. the present invention uses special anti-fungus material combination carrying out antibacterial and mouldproof, the contriver fully takes into account in the environment of high temperature, high humidity, high nutrient, should choose have low water solubility, the anti-fungus material combination of characteristics such as hypotoxicity, slow-releasing, wide spectrum and the specific aim bacterial classification high property killed, overcome the deficiency that single anti-fungus material exists, anti-mold effect is significantly improved;
2. the present invention selects the water-and acrylate emulsion system for use, considers the hypotoxicity of antimildew disinfectant product simultaneously, has embodied the characteristic of environment-friendly type mould-repellant coating;
3. the present invention combines with mould-repellant coating with particular surroundings by the special construction rules, has prolonged the effectiveness and the life-span of mould-repellant coating largely.
Embodiment:
How further specify the present invention below in conjunction with specific embodiment realizes.After these embodiment only are used for illustrating that rationally having chosen anti-fungus material makes up, the addition of other raw material and anti-fungus material combination and in conjunction with the situation of construction regulations maintenance is different for the influence of mould-repellant coating effect, and do not mean that and limit the invention in a certain scope.
Embodiment 1:
Deionized water 26.5%, sterilant 0.2%, dispersion agent 0.5%, wetting agent 0.1%, flow agent 0.5%, antifreezing agent 2%, defoamer 0.5% are put into high speed dispersor and disperseed, add pigment 17%, filler 23%, finish, high speed (800-2000rpm) stirs, and uses the sand mill high speed dispersion to fineness≤45um again; Under middle low speed (400-800rpm) stirs, add film coalescence aid 2%, acrylic ester emulsion 25% gradually, adjust emulsion paint pH value in 8.3 ± 0.2 scopes with the pH regulator agent, adding mould inhibitor 1.0% stirs evenly, and adjust viscosity to the 30 ± 2mPa.s (25 ℃) of emulsion paint with thickening material 1.5%, filter and promptly make environment-friendly type long-acting mildew-resisting paint.
Embodiment 2:
Deionized water 21.8%, sterilant 0.2%, dispersion agent 0.5%, wetting agent 0.1%, flow agent 0.5%, antifreezing agent 2%, defoamer 0.5% are put into high speed dispersor and disperseed, add pigment 15%, filler 20%, finish, high speed (800-2000rpm) stirs, and uses the sand mill high speed dispersion to fineness≤45um again; Under middle low speed (400-800rpm) stirs, add film coalescence aid 2%, acrylic ester emulsion 35% gradually, adjust emulsion paint pH value in 8.3 ± 0.2 scopes with the pH regulator agent, adding mould inhibitor 1.0% stirs evenly, and adjust viscosity to the 30 ± 2mPa.s (25 ℃) of emulsion paint with thickening material 1.2%, filter and promptly make environment-friendly type long-acting mildew-resisting paint.
Embodiment 3:
Deionized water 21.5%, sterilant 0.2%, dispersion agent 0.5%, wetting agent 0.1%, flow agent 0.5%, antifreezing agent 2%, defoamer 0.5% are put into high speed dispersor and disperseed, add pigment 17%, filler 23%, finish, high speed (800-2000rpm) stirs, and uses the sand mill high speed dispersion to fineness≤45um again; Under middle low speed (400-800rpm) stirs, add film coalescence aid 2%, acrylic ester emulsion 30% gradually, adjust emulsion paint pH value in 8.3 ± 0.2 scopes with the pH regulator agent, adding mould inhibitor 1.5% stirs evenly, and adjust viscosity to the 30 ± 2mPa.s (25 ℃) of emulsion paint with thickening material 1.0%, filter and promptly make environment-friendly type long-acting mildew-resisting paint.
Embodiment 4:
Deionized water 21.5%, sterilant 0.2%, dispersion agent 0.5%, wetting agent 0.1%, flow agent 0.5%, antifreezing agent 2%, defoamer 0.5% are put into high speed dispersor and disperseed, add pigment 12%, filler 28%, finish, high speed (800-2000rpm) stirs, and uses the sand mill high speed dispersion to fineness≤45um again; Under middle low speed (400-800rpm) stirs, add film coalescence aid 2%, acrylic ester emulsion 30% gradually, adjust emulsion paint pH value in 8.3 ± 0.2 scopes with the pH regulator agent, adding mould inhibitor 1.5% stirs evenly, and adjust viscosity to the 30 ± 2mPa.s (25 ℃) of emulsion paint with thickening material 1.0%, filter and promptly make environment-friendly type long-acting mildew-resisting paint.
Embodiment 5:
Deionized water 26.7%, sterilant 0.2%, dispersion agent 0.5%, wetting agent 0.1%, flow agent 0.5%, antifreezing agent 2%, defoamer 0.5% are put into high speed dispersor and disperseed, add pigment 18%, filler 22%, finish, high speed (800-2000rpm) stirs, and uses the sand mill high speed dispersion to fineness≤45um again; Under middle low speed (400-800rpm) stirs, add film coalescence aid 2%, acrylic ester emulsion 25% gradually, adjust emulsion paint pH value in 8.3 ± 0.2 scopes with the pH regulator agent, adding mould inhibitor 0.8% stirs evenly, and adjust viscosity to the 30 ± 2mPa.s (25 ℃) of emulsion paint with thickening material 1.5%, filter and promptly make environment-friendly type long-acting mildew-resisting paint.
Embodiment 6:
Deionized water 32.2%, sterilant 0.2%, dispersion agent 0.5%, wetting agent 0.1%, flow agent 0.5%, antifreezing agent 2%, defoamer 0.5% are put into high speed dispersor and disperseed, add pigment 18%, filler 22%, finish, high speed (800-2000rpm) stirs, and uses the sand mill high speed dispersion to fineness≤45um again; Under middle low speed (400-800rpm) stirs, add film coalescence aid 2%, acrylic ester emulsion 20% gradually, adjust emulsion paint pH value in 8.3 ± 0.2 scopes with the pH regulator agent, adding mould inhibitor 0.3% stirs evenly, and adjust viscosity to the 30 ± 2mPa.s (25 ℃) of emulsion paint with thickening material 1.5%, filter and promptly make environment-friendly type long-acting mildew-resisting paint.
Embodiment 7:
On the basis of embodiment 3,, in the senile experiment process, intermittently carry out the coating maintenance with the mildew-resistant washing lotion in conjunction with construction regulations.The concrete Formulation Example of described mildew-resistant washing lotion is:
Mildew-resistant lotion prescription example
| Material | Massfraction/% |
| The mildew-resistant scavenger specially | 5 |
| Solubility promoter | 40 |
| Water | 55 |
| Add up to | 100 |
The concrete technology of coating maintenance is for after the 250H senile experiment finishes, after observing the mould-growth situation of coatingsurface earlier, be low-concentration liquid with mildew-resistant washing lotion and water by 1: 2 dilution proportion again, and be sprayed at coatingsurface extremely with its complete wetting, treat that then coating dries, enter second experiment of 250H aged, circulation successively. and with this maintaining process operation. coating mildew situation after the different digestion times of experience observed by the maintenance of mildew-resistant washing lotion.
Embodiment fungicidal properties test comparison:
The evaluation method of environment-friendly type mould-repellant coating: measure the fungicidal properties of filming according to international GB1741-79 (89) " the anti-mould assay method of coating ".
Above embodiment detects by microorganism detection center, Guangdong Province, and the contrast test result is as follows:
The contrast test result, embodiment 5,6 is less ageing undesirable because of the anti-fungus material usage quantity; Embodiment 1,2 makes mildew-resistant ageing also moderate because of the anti-fungus material usage quantity is moderate; Embodiment 3,4 is bigger because of the anti-fungus material usage quantity, and makes ageing prolongation, and the mildew grade is low, but along with the prolongation of digestion time, their still not enough embodiment 7 excellences that combine according to the construction regulations maintenance.The contriver thinks that the result of embodiment 7 has proved absolutely that passing through the special construction rules combines with environment-friendly type long-acting mildew-resisting paint (embodiment 3), can prolong the effectiveness and the life-span of mould-repellant coating.
Claims (6)
1. environment-friendly type long-acting mildew-resisting paint, it is characterized in that: it is by acrylic ester emulsion, mould inhibitor, sterilant, pigment, filler, dispersion agent, wetting agent, thickening material, flow agent, film coalescence aid, antifreezing agent, defoamer, pH regulator agent and deionized water are formed, and their weight percent is acrylic ester emulsion 10%-40%, mould inhibitor 0.1%-2.0%, sterilant 0.05%-0.5%, pigment 5%-25%, filler 10%-40%, dispersion agent 0.1%-1%, wetting agent 0.05%-1%, thickening material 0.2%-5%, flow agent 0.1%-3%, film coalescence aid 0.4%-4%, antifreezing agent 0.5%-5%, defoamer 0.02%-1%, the 0.05%-2%pH conditioning agent, deionized water 5%-35%; Each component sum is 100%.
2. environment-friendly type long-acting mildew-resisting paint according to claim 1 is characterized in that: each component optimum weight per-cent is acrylic ester emulsion 30%, mould inhibitor 1.5%, sterilant 0.2%, pigment 17%, filler 23%, dispersion agent 0.5%, wetting agent 0.1%, thickening material 1%, flow agent 0.5%, film coalescence aid 2%, antifreezing agent 2%, defoamer 0.5%, pH regulator agent 0.2%, deionized water 21.5%.
3. environment-friendly type long-acting mildew-resisting paint according to claim 1 and 2 is characterized in that: mould inhibitor is any one or any being mixed more than two kinds in urine derivative, thiram and the diformazan ammonia zinc sulfate etc. of octyl group-isothiazolinone, two chloro-n-octyl groups-4-isothiazoline-3-ketone, nitrogen-2-methyl-4-isothiazoline-3-ketone, 2-methyl-4-isothiazoline-3-ketone, aryl.
4. according to each described environment-friendly type long-acting mildew-resisting paint among the claim 1-3, it is characterized in that: mould inhibitor is preferably urine derivative or the thiram and the diformazan ammonia zinc sulfate mixture of nitrogen-2-methyl-4-isothiazoline-3-ketone, octyl group-isothiazolinone and two chloro-n-octyl groups-4-isothiazoline-3-ketone and aryl.
5. environment-friendly type long-acting mildew-resisting paint according to claim 4 is characterized in that: mould inhibitor is urine derivative, thiram and the diformazan ammonia zinc sulfate mixture of octyl group-isothiazolinone or two chloro-n-octyl groups-4-isothiazoline-3-ketone and aryl more preferably.
6. the preparation method of environment-friendly type long-acting mildew-resisting paint as claimed in claim 1 comprises the steps:
(1) batching:
Stand-by by each weight percentages of components batching;
(2) slurrying:
Under disperseing to stir, low speed (200-600rpm) adds deionized water, sterilant, dispersion agent, wetting agent, antifreezing agent, defoamer, flow agent successively, after mixing, disperse to stir and slowly add pigment and filler down, finish, high speed (800-2000rpm) disperses to stir, and uses the sand mill high speed dispersion to fineness≤45 μ m again;
(3) paint:
Under middle low speed (400-800rpm) disperses to stir, add film coalescence aid, acrylic ester emulsion gradually, adjust emulsion paint pH value in 8.3 ± 0.2 scopes with the pH regulator agent, adding mould inhibitor stirs evenly, and adjust viscosity to the 30 ± 2mPas (25 ℃) of emulsion paint with thickening material, make environment-friendly type long-acting mildew-resisting paint after the filtration.
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