CN104789073A - Photocatalytic coating and preparation method thereof - Google Patents
Photocatalytic coating and preparation method thereof Download PDFInfo
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- CN104789073A CN104789073A CN201510219833.1A CN201510219833A CN104789073A CN 104789073 A CN104789073 A CN 104789073A CN 201510219833 A CN201510219833 A CN 201510219833A CN 104789073 A CN104789073 A CN 104789073A
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- 239000011248 coating agent Substances 0.000 title claims abstract description 64
- 238000000576 coating method Methods 0.000 title claims abstract description 64
- 230000001699 photocatalysis Effects 0.000 title claims abstract description 28
- 238000002360 preparation method Methods 0.000 title claims description 13
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 62
- 239000000463 material Substances 0.000 claims abstract description 30
- 239000002002 slurry Substances 0.000 claims abstract description 26
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000004606 Fillers/Extenders Substances 0.000 claims abstract description 11
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 11
- 239000000057 synthetic resin Substances 0.000 claims abstract description 11
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000000049 pigment Substances 0.000 claims abstract description 9
- 239000002994 raw material Substances 0.000 claims abstract description 4
- 238000003756 stirring Methods 0.000 claims description 56
- 239000003795 chemical substances by application Substances 0.000 claims description 33
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 19
- 239000006185 dispersion Substances 0.000 claims description 19
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical group OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 15
- 239000013530 defoamer Substances 0.000 claims description 15
- 239000003112 inhibitor Substances 0.000 claims description 13
- 241000276489 Merlangius merlangus Species 0.000 claims description 12
- 239000005995 Aluminium silicate Substances 0.000 claims description 8
- 235000002918 Fraxinus excelsior Nutrition 0.000 claims description 8
- 235000012211 aluminium silicate Nutrition 0.000 claims description 8
- 239000002956 ash Substances 0.000 claims description 8
- 239000012752 auxiliary agent Substances 0.000 claims description 8
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 8
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 8
- 239000000377 silicon dioxide Substances 0.000 claims description 8
- 238000004581 coalescence Methods 0.000 claims description 7
- 238000004513 sizing Methods 0.000 claims description 7
- 230000008719 thickening Effects 0.000 claims description 7
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims description 6
- 239000003002 pH adjusting agent Substances 0.000 claims description 6
- 239000000080 wetting agent Substances 0.000 claims description 6
- 238000009775 high-speed stirring Methods 0.000 claims description 4
- CBTVGIZVANVGBH-UHFFFAOYSA-N aminomethyl propanol Chemical group CC(C)(N)CO CBTVGIZVANVGBH-UHFFFAOYSA-N 0.000 claims description 2
- 239000003945 anionic surfactant Substances 0.000 claims description 2
- 229920002635 polyurethane Polymers 0.000 claims description 2
- 239000004814 polyurethane Substances 0.000 claims description 2
- 239000001038 titanium pigment Substances 0.000 claims description 2
- 238000004140 cleaning Methods 0.000 abstract description 8
- 230000000844 anti-bacterial effect Effects 0.000 abstract description 6
- 238000004887 air purification Methods 0.000 abstract description 5
- 150000002500 ions Chemical class 0.000 abstract description 5
- 230000007774 longterm Effects 0.000 abstract description 5
- 238000005201 scrubbing Methods 0.000 abstract description 5
- 239000000758 substrate Substances 0.000 abstract description 5
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 abstract 1
- 230000003712 anti-aging effect Effects 0.000 abstract 1
- 230000000843 anti-fungal effect Effects 0.000 abstract 1
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 15
- 238000000227 grinding Methods 0.000 description 13
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 9
- 238000006253 efflorescence Methods 0.000 description 8
- 206010037844 rash Diseases 0.000 description 8
- 230000032683 aging Effects 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 6
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 6
- 238000005336 cracking Methods 0.000 description 5
- 239000008367 deionised water Substances 0.000 description 4
- 229910021641 deionized water Inorganic materials 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000003973 paint Substances 0.000 description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 229910021529 ammonia Inorganic materials 0.000 description 3
- 230000003115 biocidal effect Effects 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 239000000839 emulsion Substances 0.000 description 3
- 235000019634 flavors Nutrition 0.000 description 3
- 238000007146 photocatalysis Methods 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- 239000010936 titanium Substances 0.000 description 3
- 208000037656 Respiratory Sounds Diseases 0.000 description 2
- 238000003556 assay Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 230000003245 working effect Effects 0.000 description 2
- 208000035473 Communicable disease Diseases 0.000 description 1
- 241000256113 Culicidae Species 0.000 description 1
- 241000255925 Diptera Species 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 150000001299 aldehydes Chemical class 0.000 description 1
- 230000002052 anaphylactic effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 239000004922 lacquer Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 239000011941 photocatalyst Substances 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002383 tung oil Substances 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Plant Pathology (AREA)
- Inorganic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The invention provides a photocatalytic coating. The photocatalytic coating comprises raw materials including slurry and a base material, wherein the slurry is mainly prepared from the following components in parts by weight: 50-60 parts of nano titania, 140-150 parts of titanium dioxide, 300-325 parts of an extender pigment, 12.5-23 parts of a slurry auxiliary, and 200-230 parts of water; and the base material is mainly prepared from the following components in parts by weight: 300-310 parts of acrylic acid synthetic resin, and 49-76 parts of a base material auxiliary. The photocatalytic coating disclosed by the invention has five unique functions including an excellent air purification function, a special antibacterial and antifungal effect, long-term release of negative ions, ultra-strong scrubbing-resistant property and ultra-strong anti-aging property; if being dirty, a house for 10 years can be washed by one time by using water; the time, the labor and the money can be saved; and, due to good dustproof self-cleaning function, the properties of a substrate are protected.
Description
Technical field
The present invention relates to paint field, in particular to a kind of photo-catalytic coating and preparation method thereof.
Background technology
Coating is one of indispensable material in Household fit-up and decoration process.In recent years, along with improving constantly of people's lives, the requirement of people to coating is more and more higher, its kind also oneself from the tung oil in past, pattern raw lacquer to synthetic resin paint future development.With satisfied different consumer demand.
And research proves, traditional coating, in the meeting slow releasing such as small molecules such as aldehydes, phenols objectionable impurities, easily causes serious injury HUMAN HEALTH.In addition, along with the increasingly sharpening of industrialization and urbanization of human society, urban air pollution is also more and more serious, and, the various harmful microorganisms of indoor injection be cause all kinds of poisoning, infect, the one of the main reasons of anaphylactic disease and communicable disease, and traditional coating can not reach the requirement improving indoor environment.
In addition, in the use procedure of traditional coating, ageing resistance well can meet the requirement of client, after using for some time, usually there will be the phenomenon of efflorescence, cracking, discolour.
In view of this, special proposition the present invention.
Summary of the invention
The first object of the present invention is to provide a kind of photo-catalytic coating; there is unique five functional: remarkable air purification function, special antibacterial and mouldproof effect, long-term negative ion release; superpower scrubbing resistance; available washing that ageing-resistant performance, 10 years houses are dirty one time; save time, laborsaving, economical; good is dust-proof self-cleaning, protection substrate performance.
The second object of the present invention is the preparation method providing a kind of described photo-catalytic coating, and the method promotes that each component fully merges, and prepares evenly, stable, the not photo-catalytic coating of breakdown of emulsion.
In order to realize above-mentioned purpose of the present invention, spy by the following technical solutions:
A kind of photo-catalytic coating, described raw material comprises: slurry and base-material;
With parts by weight, described slurry is prepared from primarily of following component: Nanometer Titanium Dioxide 50 ~ 60 parts, titanium dioxide 140 ~ 150 parts, pigment extender 300 ~ 310 parts, sizing agent 12.5 ~ 23 parts and 200 ~ 230 parts, water;
Described base-material is prepared from primarily of following component: vinylformic acid synthetic resins 300 ~ 310 parts, base-material auxiliary agent 49 ~ 76 parts.
Photo-catalytic coating provided by the invention, Nanometer Titanium Dioxide, titanium dioxide, pigment extender and sizing agent and water are prepared into slurry, vinylformic acid synthetic resins, base-material auxiliary agent are prepared into base-material, and the photo-catalytic coating be prepared from by slurry and base-material has unique five functional:
One is remarkable air purification function, the obnoxious flavoures such as the formaldehyde in can purifying air, ammonia, benzene; Two is special antibacterial and mouldproof effects, and antibiotic rate is more than 98%; Three is can long-term negative ion release; Four is have superpower scrubbing resistance, ageing-resistant performance, not easily occurs the phenomenon of efflorescence, cracking, discolour; Five is good dust-proof self-cleaning, protection substrate performance; photo-catalytic coating provided by the invention is sprayed on interior and exterior wall or furniture, forms the micron-sized film of one deck, have self-cleaning action; pollutent and dust are not easily fixed on the surface, and protect original base material nondiscoloration, colour-fast.
Nanometer Titanium Dioxide is the main function raw material of photo-catalytic coating provided by the invention, has significant photocatalysis effect, applies it in coating, together with acting on, makes coating have special five functional with other component.And when Nanometer Titanium Dioxide is anatase titanium dioxide, the photocatalysis effect of coating is optimum, and use Rutile type Titanium Dioxide also to strengthen physical strength and the sticking power of coating further, prevent crackle, prevent ultraviolet and moisture through, extend the work-ing life of coating, therefore, preferably, described Nanometer Titanium Dioxide is anatase titanium dioxide, and described titanium dioxide is rutile-type.
The mixing pigment extender of the preferred kaolin of the pigment extender in the present invention, silica ashes, coarse whiting, talcum powder composition, ensure that the filling properties of coating, improves the intensity of coating, scrub resistance and weather resistance; The proportioning of pigment extender can have an impact to the performance of coating, more suitable, with parts by weight, and the content kaolin 50 ~ 55 parts of each component, silica ashes 50 ~ 55 parts, coarse whiting 150 ~ 160 parts, talcum powder 50 ~ 55 parts; Preferably, described coarse whiting and talcous granularity are more than 1000 orders.
In coating provided by the invention, existing solid particulate components, also has liquid ingredient, in order to ensure the performance of coating, prevents the problems such as loose colour, sedimentation, layering, and improve the stability of storage, sizing agent of the present invention comprises dispersion agent, wetting agent.Preferably, the type of described dispersion agent is anion surfactant, is preferably dispersion agent 5040; Described wetting agent is OP-40 or PEG100.PH adjusting agent ensures that the pH value of coating maintains in stable scope, thus ensures the photocatalyst characteristic of coating, and preferably, described pH adjusting agent is AMP-95.The interpolation of defoamer eliminates because of the bubble that the operations such as stirring, grinding produce in preparation process, and preferably, its type is defoamer NXZ; Antifreezing agent ensures that coating still can play a role when outside air temperature changes, and preferably, is ethylene glycol or propylene glycol; Film coalescence aid reduces the minimum film-forming temperature of coating, and ensureing that coating can form film smoothly, preferably, is Texnol; Flow agent impels coating in drying and forming-film process, form smooth, smooth, a uniform film, improves its levelling property and homogeneity, preferably, is polyurethanes, is preferably RW-2020; Thickening material ensures dope viscosity, and increasing spreadability, preferably, is TT-935; Sanitas and mould inhibitor ensure coating storage stability, and preferably, described sanitas is sanitas 251, and described mould inhibitor is mould inhibitor N-96.
In weight fraction, the consumption that each component is suitable is dispersion agent 7 ~ 10 parts, wetting agent 2.5 ~ 5 parts, pH adjusting agent 2 ~ 5 parts and defoamer 1 ~ 3 part, antifreezing agent 15 ~ 20 parts, film coalescence aid 20 ~ 30 parts, flow agent 4 ~ 6 parts, thickening material 5 ~ 8 parts, defoamer 2 ~ 5 parts, sanitas 1 ~ 3 part and mould inhibitor 2 ~ 4 parts.
Preferably, water described in the present invention is deionized water or purified water, avoids impurity to destroy the homogeneity of coating, occurs the problems such as efflorescence, cracking, discolour after avoiding life-time service.
A preparation method for photo-catalytic coating of the present invention, comprises the steps:
(1) water in pulp components is added in dispersion cylinder, stirring at low speed, add sizing agent; After whole dissolving, add Nanometer Titanium Dioxide, continue stirring at low speed; Add titanium dioxide and pigment extender successively after 30 ~ 40 minutes, improve stir speed (S.S.), high-speed stirring was ground after 40 ~ 50 minutes, obtained slurry;
(2) open stirring at low speed, in the slurry prepared, slowly add vinylformic acid synthetic resins, continue stirring at low speed 20 ~ 30 minutes; After slowly add base-material auxiliary agent and carry out stirring at low speed.
The preparation method of photo-catalytic coating provided by the invention, promotes that each component fully merges, and prepares evenly, stable, the not photo-catalytic coating of breakdown of emulsion.
Preferably, the described base-material auxiliary agent that slowly adds specifically comprises:
First add antifreezing agent and film coalescence aid, stirring at low speed 15 ~ 20 minutes; After add flow agent, stirring at low speed 10 ~ 15 minutes; Add thickening material again, stirring at low speed 20 minutes; Finally, sanitas, mould inhibitor and defoamer is added 3 ~ 5 minutes.
The speed stirred affects dissolution characteristics and the emulsification property of component, and preferably, the rotating speed of described stirring at low speed is 70 ~ 90 revs/min, and the rotating speed of described high-speed stirring is 300 ~ 400 revs/min.
Compared with prior art, beneficial effect of the present invention is:
(1) there is unique five functional: one is remarkable air purification function, the obnoxious flavoures such as the formaldehyde in can purifying air, ammonia, benzene; Two is special antibacterial and mouldproof effects, and antibiotic rate is more than 98%; Three is can long-term negative ion release; Four is have superpower scrubbing resistance, ageing-resistant performance, not easily occurs the phenomenon of efflorescence, cracking, discolour; Five is good dust-proof self-cleaning, protection substrate performance; photo-catalytic coating provided by the invention is sprayed on interior and exterior wall or furniture, forms the micron-sized film of one deck, have self-cleaning action; pollutent and dust are not easily fixed on the surface, and protect original base material nondiscoloration, colour-fast.
(2) Nanometer Titanium Dioxide is applied in coating, together with acting on other component, makes coating have special five functional.And when Nanometer Titanium Dioxide is anatase titanium dioxide, the photocatalysis effect of coating is optimum, and use Rutile type Titanium Dioxide also to strengthen physical strength and the sticking power of coating further, prevent crackle, prevent ultraviolet and moisture through, extend the work-ing life of coating.
(3) preparation method of photo-catalytic coating provided by the invention, promotes that each component fully merges, and prepares evenly, stable, the not photo-catalytic coating of breakdown of emulsion.
Embodiment
Below in conjunction with embodiment, embodiment of the present invention are described in detail, but it will be understood to those of skill in the art that the following example only for illustration of the present invention, and should not be considered as limiting the scope of the invention.Unreceipted actual conditions person in embodiment, the condition of conveniently conditioned disjunction manufacturers suggestion is carried out.Agents useful for same or the unreceipted production firm person of instrument, be and can buy by commercially available the conventional products obtained.
Embodiment 1
Join in dispersion cylinder by 230kg deionized water, open and stir, the speed of stirring is 90 turns/per minute; 10kg dispersion agent 5040,5kg PEG100,5kg AMP-95,3kg defoamer NXZ are joined in dispersion cylinder, after confirming all dissolvings, add the sharp titanium of 60kg nanometer again, continue stirring after 30 minutes, add 150kg Rutile type Titanium Dioxide, 55kg kaolin, 55kg silica ashes, 160kg coarse whiting, 55kg talcum powder, now, improving stir speed (S.S.) is 400 turns/per minute, stirs 40 minutes under this two-forty.
After stirring terminates, the slurry be stirred is squeezed in sand mill and grinds.During grinding, coutroi velocity or grinding number of times, until fineness is less than 20 μm.If slurry fineness is greater than 20 μm, flow velocity can be reduced or improve grinding number of times, ensure that the granularity of the slurry finally obtained is below 20 μm.
After grinding, slurry is squeezed in toning tank, under the stir speed (S.S.) of 90 turns/per minute, slowly add 310kg vinylformic acid synthetic resins, stir 20 minutes; After slowly add 20kg ethylene glycol and 30kg Texnol, stir 15 minutes; Then add 6kg RW-2020, stir and add 8kg TT-935 again after 10 minutes, then stir 20 minutes; Finally, 3kg sanitas is added and 4kg mould inhibitor stirs 5 minutes.
Embodiment 2
Join in dispersion cylinder by 200kg deionized water, open and stir, the speed of stirring is 70 turns/per minute; 7kg dispersion agent 5040,2.5kg OP-40,2kg AMP-95,1kg defoamer NXZ are joined in dispersion cylinder, after confirming all dissolvings, add the sharp titanium of 50kg nanometer again, continue stirring after 30 minutes, add 140kg Rutile type Titanium Dioxide, 50kg kaolin, 50kg silica ashes, 150kg coarse whiting, 50kg talcum powder, coarse whiting and talcous granularity are 1250 orders, now, improving stir speed (S.S.) is 300 turns/per minute, stirs 40 minutes under this two-forty.
After stirring terminates, the slurry be stirred is squeezed in sand mill and grinds.During grinding, coutroi velocity or grinding number of times, until fineness is less than 20 μm.If slurry fineness is greater than 20 μm, flow velocity can be reduced or improve grinding number of times, ensure that the granularity of the slurry finally obtained is below 20 μm.
After grinding, slurry is squeezed in toning tank, under the stir speed (S.S.) of 70 turns/per minute, slowly add 300kg vinylformic acid synthetic resins, stir 20 minutes; After slowly add 15kg ethylene glycol and 20kg Texnol, stir 15 minutes; Then add 4kg RW-2020, stir and add 5kg TT-935 again after 10 minutes, then stir 20 minutes; Finally, 1kg sanitas is added and 2kg mould inhibitor stirs 3 minutes.
In order to enrich the color of coating, finally can add mill base and carry out mixing color adding.
Comparative example 1
In this comparative example, not containing Nanometer Titanium Dioxide in formulation for coating material, all the other components are all identical with embodiment 2.Concrete, preparation method is:
Join in dispersion cylinder by 200kg deionized water, open and stir, the speed of stirring is 70 turns/per minute; 7kg dispersion agent 5040,2.5kg OP-40,2kg AMP-95,1kg defoamer NXZ are joined in dispersion cylinder, after confirming all dissolvings, add 140kg Rutile type Titanium Dioxide, 50kg kaolin, 50kg silica ashes, 150kg coarse whiting, 50kg talcum powder again, coarse whiting and talcous granularity are 1250 orders, now, improving stir speed (S.S.) is 300 turns/per minute, stirs 40 minutes under this two-forty.
After stirring terminates, the slurry be stirred is squeezed in sand mill and grinds.During grinding, coutroi velocity or grinding number of times, until fineness is less than 20 μm.If slurry fineness is greater than 20 μm, flow velocity can be reduced or improve grinding number of times, ensure that the granularity of the slurry finally obtained is below 20 μm.
After grinding, slurry is squeezed in toning tank, under the stir speed (S.S.) of 70 turns/per minute, slowly add 300kg vinylformic acid synthetic resins, stir 20 minutes; After slowly add 15kg ethylene glycol and 20kg Texnol, stir 15 minutes; Then add 4kg RW-2020, stir and add 5kg TT-935 again after 10 minutes, then stir 20 minutes; Finally, 1kg sanitas is added and 2kg mould inhibitor stirs 3 minutes.
The component addition of embodiment and comparative example as shown in Table 1 and Table 2
| Slurry | Embodiment 1 | Embodiment 2 | Comparative example 1 |
| The sharp titanium of nanometer | 60kg | 50kg | 0 |
| Rutile type | 150kg | 140kg | 140kg |
| Kaolin | 55kg | 50kg | 50kg |
| Silica ashes | 55kg | 50kg | 50kg |
| Coarse whiting | 160kg | 150kg (granularity 1250 order) | 150kg (granularity 1250 order) |
| Talcum powder | 55kg | 50kg (granularity 1250 order) | 50kg (granularity 1250 order) |
| Dispersion agent | 10kg | 230kg | 230kg |
| Wetting agent | 5kg | 2.5kg | 2.5kg |
| PH adjusting agent | 5kg | 2kg | 2kg |
| Defoamer | 3kg | 1kg | 1kg |
| Water | 230kg | 200kg | 200kg |
| Base-material | Embodiment 1 | Embodiment 2 | Comparative example 1 |
| Vinylformic acid synthetic resins | 310kg | 300kg | 300kg |
| Antifreezing agent | 20kg | 15kg | 15kg |
| Film coalescence aid | 30kg | 20kg | 20kg |
| Flow agent | 6kg | 4kg | 4kg |
| Thickening material | 8kg | 5kg | 5kg |
| Defoamer | 5kg | 2kg | 2kg |
| Sanitas | 3kg | 1kg | 1kg |
| Mould inhibitor | 4kg | 2kg | 2kg |
Experimental example
Carry out Performance Detection to coating prepared by the embodiment of the present invention and comparative example, Detection of content comprises:
Formaldehyde and purification of nitrogen oxides performance: carry out according to " Indoor Air Quality standards " (GB/T18883-2002); Weathering resistance (artificial accelerated aging): carry out according to " paint and varnish artificial weathering and man-made radiation expose " (GB/T1865-1997); Opacifying power: carry out according to " coating opacifying power assay method " (GB/T1726-1989); Water tolerance: carry out according to " paint film water tolerance assay method " (GB/T1733-1933); Abrasion resistance: carry out according to " mensuration of building coating coating abrasion resistance " (GB/T9266-1988).Its detected result is as shown in table 3.Table 3
| Embodiment 1 | Embodiment 2 | Comparative example 1 | |
| Purifying formaldehyde efficiency | 96％ | 99％ | Nothing |
| Purification of nitrogen oxides efficiency | 92％ | 96％ | Nothing |
| Antibacterial efficiency | 98％ | 99％ | Nothing |
| Artificial ageing resistance | 1200h | 1300h | 400h |
| Efflorescence | Without efflorescence | Without efflorescence | 4 grades |
| Variable color | 2 grades | 2 grades | 4 grades |
| Water tolerance | Without exception | Without exception | Abnormal |
| Abrasion resistance | 10000 times | 10000 times | 1200 times |
| Contamination resistance | Meet | Meet | Do not meet |
From the detected result of table 3, photo-catalytic coating provided by the invention has special five functional: one is remarkable air purification function, the obnoxious flavoures such as the formaldehyde in can purifying air, ammonia, benzene; Two is special antibacterial and mouldproof effects, and antibiotic rate is more than 98%; Three is can long-term negative ion release, can make to kill mosquitos and flies; Four is have good scrubbing resistance, ageing-resistant performance, not easily occurs the phenomenon of efflorescence, cracking, discolour; Five is good dust-proof self-cleaning, protection substrate performance; photo-catalytic coating provided by the invention is sprayed on interior and exterior wall or furniture, forms the micron-sized film of one deck, have self-cleaning action; pollutent and dust are not easily fixed on the surface, and protect original base material nondiscoloration, colour-fast.
Although illustrate and describe the present invention with specific embodiment, however it will be appreciated that can to make when not deviating from the spirit and scope of the present invention many other change and amendment.Therefore, this means to comprise all such changes and modifications belonged in the scope of the invention in the following claims.
Claims (10)
1. a photo-catalytic coating, is characterized in that, raw material comprises: slurry and base-material;
With parts by weight, described slurry is prepared from primarily of following component: Nanometer Titanium Dioxide 50 ~ 60 parts, titanium dioxide 140 ~ 150 parts, pigment extender 300 ~ 325 parts, sizing agent 12.5 ~ 23 parts and 200 ~ 230 parts, water;
Described base-material is prepared from primarily of following component: vinylformic acid synthetic resins 300 ~ 310 parts, base-material auxiliary agent 49 ~ 76 parts.
2. coating according to claim 1, is characterized in that, described Nanometer Titanium Dioxide is anatase titanium dioxide, and described titanium dioxide is rutile-type.
3. coating according to claim 1, is characterized in that, described pigment extender comprises: kaolin, silica ashes, coarse whiting and talcum powder, and preferably, described coarse whiting and talcous granularity are respectively more than 1000 orders.
4. coating according to claim 3, is characterized in that, with parts by weight, described pigment extender comprises: kaolin 50 ~ 55 parts, silica ashes 50 ~ 55 parts, coarse whiting 150 ~ 160 parts and talcum powder 50 ~ 55 parts.
5. coating according to claim 1, is characterized in that, with parts by weight, described sizing agent comprises dispersion agent 7 ~ 10 parts, wetting agent 2.5 ~ 5 parts, pH adjusting agent 2 ~ 5 parts and defoamer 1 ~ 3 part;
Described base-material auxiliary agent comprises antifreezing agent 15 ~ 20 parts, film coalescence aid 20 ~ 30 parts, flow agent 4 ~ 6 parts, thickening material 5 ~ 8 parts, defoamer 2 ~ 5 parts, sanitas 1 ~ 3 part and mould inhibitor 2 ~ 4 parts.
6. coating according to claim 5, is characterized in that, described dispersion agent is anion surfactant, is preferably dispersion agent 5040; Described wetting agent is OP-40 or PEG100; Described pH adjusting agent is AMP-95; Described defoamer is defoamer NXZ;
Described antifreezing agent is ethylene glycol or propylene glycol; Described film coalescence aid is Texnol; Described flow agent is polyurethanes, is preferably RW-2020; Described thickening material is TT-935; Described sanitas is sanitas 251; Described mould inhibitor is mould inhibitor N-96.
7. a preparation method for photo-catalytic coating described in any one of claim 1 ~ 6, is characterized in that, comprise the steps:
(1) water is added in dispersion cylinder, stirring at low speed, add sizing agent; After whole dissolving, add Nanometer Titanium Dioxide, continue stirring at low speed; Add titanium dioxide and pigment extender successively after 30 ~ 40 minutes, improve stir speed (S.S.), high-speed stirring was ground after 40 ~ 50 minutes, obtained slurry;
(2) open stirring at low speed, in the described slurry prepared, slowly add vinylformic acid synthetic resins, continue stirring at low speed 20 ~ 30 minutes; After slowly add base-material auxiliary agent, continue stirring 50 ~ 60 minutes, obtain described photo-catalytic coating.
8. preparation method according to claim 7, is characterized in that, the described base-material auxiliary agent that slowly adds specifically comprises:
First add antifreezing agent and film coalescence aid, stirring at low speed 15 ~ 20 minutes; After add flow agent, stirring at low speed 10 ~ 15 minutes; Add thickening material again, stirring at low speed 20 minutes; Finally, sanitas, mould inhibitor and defoamer is added.
9. preparation method according to claim 7, is characterized in that, the rotating speed of described stirring at low speed is 70 ~ 90 revs/min.
10. preparation method according to claim 7, is characterized in that, the rotating speed of described high-speed stirring is 300 ~ 400 revs/min.
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| CN107459885A (en) * | 2017-07-31 | 2017-12-12 | 河北晨阳工贸集团有限公司 | A kind of photo-catalytic coating and preparation method thereof |
| CN110903752A (en) * | 2019-12-15 | 2020-03-24 | 湛江市汉成科技有限公司 | Environment-friendly ultra-transparent low-vco material and preparation method thereof |
| CN111849278A (en) * | 2020-07-14 | 2020-10-30 | 李欣华 | Photocatalyst coating and preparation method thereof |
| CN112876892A (en) * | 2021-03-12 | 2021-06-01 | 佛山市索菲雅网印科技有限公司 | Silk-screen printing coating and preparation method thereof |
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