CN104449140A - Catalyst coating and preparation method thereof - Google Patents

Catalyst coating and preparation method thereof Download PDF

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Publication number
CN104449140A
CN104449140A CN201410722517.1A CN201410722517A CN104449140A CN 104449140 A CN104449140 A CN 104449140A CN 201410722517 A CN201410722517 A CN 201410722517A CN 104449140 A CN104449140 A CN 104449140A
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Prior art keywords
catalyst
coating
zno
catalyst coating
dispersion
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Inventor
严文斌
黄海成
卢兴帅
陈福源
严高飞
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ZHEJIANG QIANGAOFEI NEW MATERIAL Co Ltd
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ZHEJIANG QIANGAOFEI NEW MATERIAL Co Ltd
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Priority to CN201410722517.1A priority Critical patent/CN104449140A/en
Publication of CN104449140A publication Critical patent/CN104449140A/en
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
    • C09D133/04—Homopolymers or copolymers of esters
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/14—Paints containing biocides, e.g. fungicides, insecticides or pesticides
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/61—Additives non-macromolecular inorganic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/61—Additives non-macromolecular inorganic
    • C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2296—Oxides; Hydroxides of metals of zinc

Abstract

The invention discloses a catalyst coating and a preparation method thereof. By adding a modified catalyst ZnO into the coating, the mechanism that organic harmful substances are degraded in the presence of the catalyst ZnO is well utilized. By the catalyst coating, the problem of the addition of the harmful substances during the production of the coating is completely solved and the potential safety hazard of the coating is removed; experimental results show that the catalyst ZnO powder and modified ZnO dispersion liquid have excellent formaldehyde purifying, degrading and removing functions, antibacterial and mildew-proof functions and the like, by adding the catalyst ZnO powder and modified ZnO dispersion liquid into the production of the coating and in a form of wall decoration, the catalyst coating is a truly functional novel coating capable of efficiently removing harmful substances such as free formaldehyde and toluene and can take effect for a long term.

Description

A kind of catalyst coating and preparation method thereof
Technical field
The invention belongs to new material technology field, particularly relate to a kind of catalyst coating and preparation method thereof.
Background technology
Along with the development of society and the raising of people's environmental consciousness, ambient air quality problem gets more and more people's extensive concerning gradually, and the use of a large amount of finishing material, while raising visual appearance is luxurious, also causes the continuous deterioration of indoor-outdoor air quality.Market has multifarious purification, objectionable impurities of dispelling coating products, major technique adds the material such as diatomite, bamboo charcoal, these materials are cellular structure, just adsorption is analyzed from principle, and really response type decomposes, the removal effect of adding the objectionable impuritiess such as this kind of material PARA FORMALDEHYDE PRILLS(91,95), benzene,toluene,xylene is undesirable not lasting yet, and can cause secondary pollution.
On coatings industry, technician, also in continuous exploration, attempts or inert raw material less by some hazardness and replaces the raw material contained hazardous substance, achieve good achievement.But still there is no a kind of coating products thoroughly dispelling the objectionable impuritiess such as environment formaldehyde, benzene,toluene,xylene at present, can not reach purification, a series of multi-functional concurrent management coating such as antibacterial while dispelling objectionable impurities.
The production technique of existing coating mainly comprises:
1. water, dispersion agent, defoamer, sterilant, sanitas, titanium dioxide, stopping composition etc. are dropped into successively in dispersion paint mixing tank, after stirring, and accelerate dispersion 60-150 minute, then inspiration sand mill carries out the dispersion of sand mill, sand has ground rear importing dispersion paint mixing tank;
2. in dispersion paint mixing tank, add emulsion again, the auxiliary agents such as thickening material, PH conditioning agent, frostproofer, film coalescence aid, defoamer, stir about 30-60 minute, after completely evenly, detect qualified discharging;
3. coating filters and metering packing: in the production process of coating, because small part color stuffing is not yet disperseed, or change into particle because of breakdown of emulsion, or have impurity to be present in coating, therefore coating now need remove coarse particles and impurity could obtain the measured product of matter after filtration, can be different according to the requirement of product, select screen cloth and the different vessels packaging of different size, and carry out metering, obtain final product.
In addition, nano inorganic material is added in coating by research by existing fractional unit at present, such as in coating, add nano titanium oxide, although also have-Ding except formaldehyde, effect except objectionable impurities and antibacterial and mouldproof, just can must be effective under action of ultraviolet light.
Prior art shortcoming:
1. need in formulation for coating material to add sterilant, sanitas, virtually with the addition of objectionable impurities to coating; Not adding of germicide, sanitas, coating is easy to again mouldy, rotten, smelly;
2. add sterilant, sanitas, because toxicity is large, there is potential safety hazard in manufacture and usage process;
3. organic antibacterial mildew inhibitor is added, its thermotolerance, mildew-resistant stability and long-lasting difference;
4. part research institution and manufacturing enterprise's nano titanium oxide produce functional coating, then must be just can reach limited decontamination effect improving under action of ultraviolet light;
5. also have the products production functional paint such as part research institution and manufacturing enterprise's bamboo charcoal, gac, diatom ooze, shell, but an adsorptivity that only tool is certain, more there is no degradation function, thus purifying property and purification persistence more limited.
Summary of the invention
The object of the present invention is to provide a kind of catalyst coating and preparation method thereof, being intended to solve in existing formulation for coating material needs to add sterilant, sanitas, with the addition of objectionable impurities, there is potential safety hazard in manufacture and usage process; Add organic antibacterial mildew inhibitor, the problem of its thermotolerance, mildew-resistant stability and long-lasting difference.
The present invention is achieved in that a kind of preparation method of catalyst coating, and the preparation method of this catalyst coating comprises the following steps:
Step one, pre-mixing: according to the component of catalyst coating according to weight percent: water 8-11%, dispersion agent 0.3-0.7%, defoamer 0.1-0.2%, wetting agent 0.1-0.5%, thickening material 0.2-0.4% mix, it is 300 RPM-600RPM that mixing speed controls, stir 60-80 minute, generate the material of colloidal, for subsequent use;
Step 2, grinding distribution: in the colloidal material made, add modification catalyst ZnO powder 1-10% raw material and color stuffing 30-40%, under high-speed dispersion equipment, making beating, the rotating speed of high-speed stirring controls to be 1200 RPM-1500RPM, transfers in sand mill, continue grinding distribution, obtained fineness is less than the white slurry material of 30um;
Step 3, paint: make in the white slurry material of fineness requirement, adds water 4-15%, catalyst ZnO dispersion liquid 3-15%, regulates pH value, then, then add emulsion 25-40%, mix; Add defoamer 0.1-0.2%, auxiliary rheological agents 0.3-0.9%, thickening material 0.1-0.3, multifunctional assistant 0.1-0.5% successively, low speed stirs, it is between 600 RPM-800 RPM that rotating speed controls, and stirs 30-60 minute, with obtained required catalyst aldehydes removal antibacterial purifying coating;
Step 4, packaging: by above-mentioned aldehydes removal coating metering tank filling bucket.
Further, color stuffing by following one, two or three one-tenth be grouped into: Rutile type Titanium Dioxide, coarse whiting and talcum powder; As: pigment system Rutile type Titanium Dioxide, filler system coarse whiting becomes to be grouped into talcum powder two kinds.
Further, dispersion agent is grouped into by one or both one-tenth following: ammonium polyacrylate salt and polyacrylic acid sodium salt, emulsion is pure-acrylic emulsion.
Further, thickening material be alkali swelling type thickening material and carboxyethyl cellulose or both be used alone, defoamer system mineral oil modified silicone.
Further, multifunctional assistant is conditioning agent, and auxiliary rheological agents is polyurethane-type auxiliary rheological agents.
Another object of the embodiment of the present invention is to provide a kind of catalyst coating, the component of this catalyst coating comprises according to weight percent: water 12-17%, dispersion agent 0.3-0.7%, defoamer 0.1-0.3%, wetting agent 0.1-0.5%, multifunctional assistant 0.1-0.5%, catalyst ZnO powder 1-10%, color stuffing 30-40%, catalyst ZnO dispersion liquid 3-15%, emulsion 25-40%, auxiliary rheological agents 0.3-0.9%, thickening material 0.3-0.7%.
Further, the method for modifying of catalyst ZnO:
Catalyst ZnO surface-treated method, catalyst ZnO is scattered in containing 2% polyoxyethylene sorbitan fatty acid ester Virahol in, single particle dispersion state is reached by sanded, tetraethoxysilane is added in dispersion liquid, keep system temperature higher than 60 DEG C and can not seethe with excitement, be added dropwise to water, stir ageing 5 ~ 20min, be cooled to room temperature, filter, deionized water drip washing is less than 8 μ S/cm, after obtaining filter cake to the specific conductivity of filtrate, by Virahol drip washing, drying and crushing is calcined and obtains the powder of catalyst ZnO surface inorganic process.
Catalyst coating provided by the invention and preparation method thereof, by adding the catalyst ZnO of modification in coating, well make use of the mechanism of catalyst ZnO catalyzed degradation Organic Hazardous Compounds;
Compared with prior art, advantage of the present invention:
1. in formulation for coating material without the need to adding sterilant, sanitas, coating undergoes no deterioration, and can reduce adding of coating objectionable impurities;
2. catalyst zinc oxide is a kind of novel New Inorganic Materials, tasteless, nontoxic, safety, stable performance.
3. add the coating that catalyst zinc oxide is produced, in any environment all there is extremely strong purifying property, antibacterial and antimildew function and anti-aging function;
4. add the coating that catalyst zinc oxide is produced, its cleaning principle is absorption and the objectionable impuritiess such as decomposing formaldehyde, and decontamination effect improving and persistence are very strong, and antibacterial ability might as well.
The nuisance that the present invention thoroughly solves in coating material production adds problem, removes the hidden model of coating safety; Experimental result shows: catalyst ZnO powder and modification ZnO dispersion liquid are added in coating material production, and its 24 hours purifying formaldehyde rates reach 95%, and decontamination effect improving persistence reaches 94%, and antibiotic rate reaches 99.99%, and mildew-resistant grade is 0 grade, can also discharge 1500/cm 3negative ion, the fundamental property of coating reaches premium grads rank (referring to examining report in annex) simultaneously.Being added in coating material production, using wall decoration form, is a kind ofly really can possess high-efficient cleaning except the functional coating material of the objectionable impurities such as free formaldehyde, toluene, and permanently effective.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Below in conjunction with specific embodiment, application principle of the present invention is further described.
The component of the catalyst coating of the embodiment of the present invention comprises according to weight percent: water 12-17%, dispersion agent 0.3-0.7%, defoamer 0.1-0.3%, wetting agent 0.1-0.5%, multifunctional assistant 0.1-0.5%, catalyst ZnO powder 1-10%, color stuffing 30-40%, catalyst ZnO dispersion liquid 3-15%, emulsion 25-40%, auxiliary rheological agents 0.3-0.9%, thickening material 0.3-0.7%;
Color stuffing can be made up of following one, two or three composition: Rutile type Titanium Dioxide, coarse whiting and talcum powder; As: pigment system Rutile type Titanium Dioxide, filler system coarse whiting becomes to be grouped into talcum powder two kinds.
Dispersion agent can be made up of one or both compositions following: ammonium polyacrylate salt and polyacrylic acid sodium salt.Described emulsion is aldehydes removal emulsion.
Thickening material can be alkali swelling type thickening material and carboxyethyl cellulose, also can both be used alone.Described defoamer system mineral oil modified silicone.
Multifunctional assistant is conditioning agent, and auxiliary rheological agents is polyurethane-type auxiliary rheological agents.
The preparation method of the catalyst coating of the embodiment of the present invention comprises the following steps:
S101: pre-mixing: according to the component of catalyst coating according to weight percent: water 8-11%, dispersion agent 0.3-0.7%, defoamer 0.1-0.2%, wetting agent 0.1-0.5%, thickening material 0.2-0.4% mixes, and it is 300 RPM-600RPM that mixing speed controls, and stirs 60-80 minute, generate the material of colloidal, for subsequent use;
S102: grinding distribution: in the colloidal material made, add modification catalyst ZnO powder 1-10% raw material and color stuffing 30-40%, under high-speed dispersion equipment, making beating, the rotating speed of high-speed stirring controls as between 1200RPM-1500RPM, transfer in sand mill, continue grinding distribution, obtained fineness is the white slurry material being less than 30um;
S103: paint: make in the white slurry material of fineness requirement, adds water 4-15%, catalyst ZnO dispersion liquid 3-15%, regulates pH value, then, then add emulsion 25-40%, mix; Add defoamer 0.1-0.2%, auxiliary rheological agents 0.3-0.9%, thickening material 0.1-0.3, multifunctional assistant 0.1-0.5% successively, low speed stirs, rotating speed controls for 600RPM-800 RPM, to stir 30-60 minute, with obtained required catalyst aldehydes removal antibacterial purifying coating;
S104: packaging: by above-mentioned aldehydes removal coating metering tank filling bucket.
The concrete steps of the invention process case one:
Step one, pre-mixing: according to the component of catalyst coating according to weight percent: water 8%, dispersion agent 0.5%, defoamer 0.2%, wetting agent 0.15%, thickening material 0.3% fully mixes, and stirs 60-80 minute, makes colloid material;
Step 2, grinding distribution: in the colloidal material made, add modification catalyst ZnO powder 5% raw material and color stuffing 35%, under high-speed dispersion equipment, making beating for some time, the rotating speed of high-speed stirring controls, between 1200RPM-1500RPM, to transfer in sand mill, continue grinding distribution, obtained fineness is the white slurry material being less than 30um;
Step 3, paint: make in the white slurry material of fineness requirement, adds water 5.7%, catalyst ZnO dispersion liquid 9%, regulates pH value, then, then add emulsion 35%, mix; Add defoamer 0.15%, auxiliary rheological agents 0.6%, thickening material 0.2%, multifunctional assistant 0.2% successively, low speed stirs, and rotating speed controls between 600RPM-800 RPM, to stir 30-60 minute, with obtained required catalyst aldehydes removal antibacterial purifying coating.
Step 4, packaging: by above-mentioned aldehydes removal coating metering tank filling bucket.
The concrete steps of the invention process case two:
Step one, pre-mixing: according to the component of catalyst coating according to weight percent: water 9%, dispersion agent 0.5%, defoamer 0.2%, wetting agent 0.15%, thickening material 0.2% fully mixes, and stirs 60-80 minute, makes colloid material;
Step 2, grinding distribution: in the colloidal material made, add modification catalyst ZnO powder 5% raw material and color stuffing 35%, under high-speed dispersion equipment, making beating for some time, the rotating speed of high-speed stirring controls, for 1200RPM-1500RPM, to transfer in sand mill, continue grinding distribution, obtained fineness is the white slurry material being less than 30um;
Step 3, paint: make in the white slurry material of fineness requirement, adds water 5.1%, catalyst ZnO dispersion liquid 5%, regulates pH value, then, then add emulsion 35%, mix; Add defoamer 0.15%, auxiliary rheological agents 0.7%, thickening material 0.2%, multifunctional assistant 0.2% successively, low speed stirs, and rotating speed controls for 600RPM-800 RPM, to stir 30-60 minute, with obtained required catalyst aldehydes removal antibacterial purifying coating.
Step 4, packaging: by above-mentioned aldehydes removal coating metering tank filling bucket.
Principle of work of the present invention:
The present invention discloses a kind of preparation method of catalyst coating, so-called catalyst coating refers to the object that can be realized the objectionable impurities dispelling environment volatilization by solar ray photocatalysis degraded, this coating also has the compatibility features such as antibacterial, mildew-resistant, deodorizing, anion releasing simultaneously, its 24 hours purifying formaldehyde rates reach 95%, decontamination effect improving persistence reaches 94%, antibiotic rate reaches 99.99%, and mildew-resistant grade is 0 grade, anion releasing 1500/cm 3(referring to examining report in annex).The birth of this invention, thoroughly solves air pollution problem inside rooms, provides solution for the mankind better create a naturally pure and fresh living environment.
The catalyst material of the embodiment of the present invention, on July 23rd, 2014, delivers to microbiological analysis inspection center of Guangdong Province, sample specification and lot number HQFL20140628, test item negative ion concentration, report number 2014FM3200, the direct-reading of detection method negative ion instrument, connect sample loading mode and quantity, censorship 1; Sample state and characteristic, liquid; Detect August 19 2014 date, September 15 2014 date of issuance; Analyzing and testing result: test item, negative ion concentration (air outlet 5cm place), detected result, 1.5 × 10 3individual/cm 3;
The catalyst material of the embodiment of the present invention was on July 7th, 2014, and deliver to the test of national building materials test center, center is numbered: 2014J00568; June 28 2014 sample produce time; Sample is intact, sample numbering 325-2; Sample size 4kg; Detect foundation, GB/T9756-2009 resin latex dope; Test item: according to the full item index test of GB/T9756-2009 standard; Through inspection, the assay of institute's submitted sample one-hundred-percent inspection project meets the technical requirement of interior finish premium grads in GB/T9756-2009 standard, and institute's submitted sample is premium grads, the date of issuance: on July 23rd, 2014;
The catalyst material of the embodiment of the present invention likes material of construction test center examining report in country, center numbering WT2014B01N01531, detected result purifying formaldehyde function 95.0%; Decontamination effect improving persistence 94.0%;
The catalyst material of the embodiment of the present invention is in microbiological analysis inspection center of Guangdong Province, and detecting mildew-resistant grade is 0 grade; Connect August 4 2014 sample date, detect September 9-2014 years on the 4th August of 2014 date; September 10 2014 date of issuance; Report number: 2014FM3378.
The catalyst material of the embodiment of the present invention is in microbiological analysis inspection center of Guangdong Province, and detect antibacterium function, report number: 2014FM3199, on July 29 2014 date of issuance, antibiotic rate is greater than 99.99%.
The perfect compatibility function of catalyst coating has benefited from modification catalyst zinc oxide (ZnO) powder that adds in its raw material and catalyst ZnO modification dispersion liquid.Catalyst zinc oxide is as inorganic functional material and novel fine chemical product, its preparation method and technical parameter all must according to country's " catalyst zinc oxide " industry standards, it really could have efficient catalytic, purification, antibacterial, mildew-resistant, a series of performance such as uvioresistant and absorption infrared rays, and the unique function of this catalyst zinc oxide has obtained showing great attention to of industry.
The mechanism of catalyst ZnO catalyzed degradation Organic Hazardous Compounds:
Catalyst ZnO excites after radiation of visible light, at catalyst ZnO Surface Creation light induced electron (e -) and hole (h +), move to solid surface to react with the dissolved oxygen on its surface and water respectively, generation has highly active free radical OH, hydroxyl radical free radical is considered to the main active substances of ZnO light-catalyzed reaction, the degraded that they are the Organic Hazardous Compounds such as formaldehyde, toluene provides highly active catalyzer, can be finally carbonic acid gas and water by their catalyzed degradations.Concrete reaction mechanism is as follows:
1. catalyst ZnO excites after radiation of visible light, at catalyst ZnO Surface Creation light induced electron (e -) and hole (h +).
ZnO + hv ZnO+ h ++ e -
2. light induced electron (e -) and hole (h +), react with the dissolved oxygen on its surface and water respectively, generate and there is highly active free radical OH.
3. the Organic Hazardous Compounds such as formaldehyde, toluene is degraded to carbonic acid gas and water by hydroxyl radical free radical.
C-ROH H 2O+CO 2↑
(remarks: C-R is the representative of the Organic Hazardous Compounds such as formaldehyde, toluene)
The Antibacterial Mechanism of catalyst ZnO has two kinds:
1. catalytic antimicrobial mechanism, namely catalyst zinc oxide is under the irradiation of natural light, can go out electronegative electronics (e by disintegrate in water and air -), leave the hole (h of positively charged simultaneously +), this hole can excite the oxygen in air to become active oxygen, has extremely strong chemically reactive, can with multiple-microorganism generation oxidizing reaction, thus bacterium to be killed;
2. digestion of metallic ion Antibacterial Mechanism: the zine ion in ZnO can dissociate out gradually, when it and bacterial body contact, will combine and make it lose activity, thus killed by bacterium with active protease in bacterial body.
The present invention is in composition of raw materials, by adopting pure-acrylic emulsion, catalyst zinc oxide and part auxiliary agent, not containing sterilant, mould inhibitor, makes the coating prepared not detect the materials such as VOC, free formaldehyde, benzene,toluene,xylene, soluble heavy metal (lead, cadmium, chromium, mercury).Its physical properties index all reaches premium grads grade, and its 24 hours purifying formaldehyde rates reach 95%, and decontamination effect improving persistence reaches 94%, and antibiotic rate reaches 99.99%, and mildew-resistant grade is 0 grade, anion releasing 1500/cm 3(referring to examining report in annex).Be far superior to international standard.In the condition of antibacterial and mouldproof, the coating that the present invention produces does not need UV-light but can achieve the goal under the catalysis of natural light, so, just can purify antibacterial and mouldproof long-term effectively.
Coating effect is illustrated:
1. conventional func: catalyst aldehydes removal antibacterial purifying coating of the present invention, possess the conventional fitting-up function of coating, and its physical properties reaches coating premium grads grade.
2. purification function: catalyst aldehydes removal antibacterial purifying coating of the present invention, due to add in formula catalyst without
Machine material and the inorganic dispersion liquid of modification catalyst, the dispersion technology that application is consummate and unique adding technology, make catalyst inorganic materials and the inorganic homogeneous dispersion of modification catalyst be distributed in film coated surface, be carbonic acid gas and water by Organic Hazardous Compounds catalyzed degradation after natural light irradiation excites.And the activity of inorganic catalytic material itself is lasting, is not consumed in the process of catalysis.Be applied in coating as main raw, through the validity period of series of experiments catalytic material more than 15 years.Therefore, coating can be degraded the free formaldehyde existed in indoor and outdoor surroundings for a long time, the objectionable impuritiess such as toluene.
3. antibacterial, owing to adding catalyst inorganic materials and the inorganic dispersion liquid of modification catalyst in formula, its material itself possesses good antibacterial, and compared with traditional fungus and mildew resistance or nanometer silver, effect is more obviously outstanding.By to natural bacteria and the compare test repeatedly of special bacterial classification, antimicrobial efficiency all reaches 99.99%.

Claims (6)

1. a catalyst coating, is characterized in that, the component of this catalyst coating comprises according to weight percent: water 12-14%, dispersion agent 0.3-0.5%, defoamer 0.2-0.4%, wetting agent 0.2-0.4%, multifunctional assistant 0.2-0.4%, catalyst ZnO powder 1-5%, color stuffing 30-35%, catalyst ZnO dispersion liquid 3-8%, emulsion 25-35%, auxiliary rheological agents 0.3-0.8%, thickening material 0.3-0.5%.
2. catalyst coating as claimed in claim 1, it is characterized in that, described catalyst ZnO is through modification, the method of catalyst ZnO modification is: catalyst ZnO is scattered in containing 2% polyoxyethylene sorbitan fatty acid ester Virahol in, single particle dispersion state is reached by sanded, tetraethoxysilane is added in dispersion liquid, system temperature is kept not seethe with excitement higher than 60 DEG C, be added dropwise to water, stir ageing 5-20min, be cooled to room temperature, filter, deionized water drip washing is less than 8 μ S/cm to the specific conductivity of filtrate, after obtaining filter cake, by Virahol drip washing, drying and crushing is calcined and obtains the powder of catalyst ZnO surface inorganic process.
3. the preparation method of catalyst coating described in claim 1 or 2, it is characterized in that, its preparation method comprises the following steps:
Step one, according to the component of catalyst coating according to weight percent: water 12-14%, dispersion agent 0.3-0.5%, defoamer 0.2-0.4%, wetting agent 0.2-0.4%, thickening material 0.3-0.5% mix, it is 300 RPM-600RPM that mixing speed controls, stir 60-80 minute, the material of obtained colloidal, for subsequent use;
Step 2, in the colloidal material made, add modification catalyst ZnO powder 1-10% raw material and color stuffing 30-40%, under high-speed dispersion equipment, making beating, the rotating speed of high-speed stirring is 1200 RPM-1500RPM, transfers in sand mill and continues grinding distribution, and obtained fineness is less than the white slurry material of 30um;
Step 3, in white slurry material, adds water 4-15%, catalyst ZnO dispersion liquid 3-15%, regulates pH value, then add emulsion 25-40%, mix; Add defoamer 0.1-0.2%, auxiliary rheological agents 0.3-0.9%, thickening material 0.1-0.3%, multifunctional assistant 0.1-0.5% successively, stirring at low speed is even, and rotating speed is 600RPM-800RPM, stirs 30-60 minute, obtained catalyst aldehydes removal antibacterial purifying coating.
4. the preparation method of catalyst coating as claimed in claim 3, it is characterized in that, step 2 color stuffing used is any one in Rutile type Titanium Dioxide, coarse whiting, talcum powder, or any two kinds of combinations in any proportion, or three kinds of material combinations in any proportion.
5. catalyst coating as claimed in claim 1, is characterized in that, thickening material adopt in alkali swelling type thickening material, carboxyethyl cellulose one or both, defoamer adopts mineral oil modified silicone.
6. catalyst coating as claimed in claim 1, is characterized in that, multifunctional assistant adopts conditioning agent, and auxiliary rheological agents adopts polyurethane-type auxiliary rheological agents.
CN201410722517.1A 2014-12-04 2014-12-04 Catalyst coating and preparation method thereof Pending CN104449140A (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10195333A (en) * 1997-01-09 1998-07-28 Kansai Paint Co Ltd Water-based coating composition capable of forming nitrogen oxide decomposing coating film
CN101067061A (en) * 2007-06-25 2007-11-07 湖州百胜涂料有限公司 Water-base paint with light catalyst and its prepn
CN102533113A (en) * 2010-12-24 2012-07-04 管静 Photocatalyst paint
CN102627892A (en) * 2012-03-20 2012-08-08 江苏同辉照明科技有限公司 Transparent photocatalyst paint
CN103131313A (en) * 2012-12-26 2013-06-05 中国建筑股份有限公司 Compound type photocatalyst air purification waterborne interior wall coating and preparation method thereof
EP2722370A1 (en) * 2012-10-17 2014-04-23 Sto Ag Photocatalytic coatings with fillers

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10195333A (en) * 1997-01-09 1998-07-28 Kansai Paint Co Ltd Water-based coating composition capable of forming nitrogen oxide decomposing coating film
CN101067061A (en) * 2007-06-25 2007-11-07 湖州百胜涂料有限公司 Water-base paint with light catalyst and its prepn
CN102533113A (en) * 2010-12-24 2012-07-04 管静 Photocatalyst paint
CN102627892A (en) * 2012-03-20 2012-08-08 江苏同辉照明科技有限公司 Transparent photocatalyst paint
EP2722370A1 (en) * 2012-10-17 2014-04-23 Sto Ag Photocatalytic coatings with fillers
CN103131313A (en) * 2012-12-26 2013-06-05 中国建筑股份有限公司 Compound type photocatalyst air purification waterborne interior wall coating and preparation method thereof

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Application publication date: 20150325