CN1320069C - Nano titanium dioxide/nano silver coating and preparation method thereof - Google Patents
Nano titanium dioxide/nano silver coating and preparation method thereof Download PDFInfo
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- CN1320069C CN1320069C CNB200410027622XA CN200410027622A CN1320069C CN 1320069 C CN1320069 C CN 1320069C CN B200410027622X A CNB200410027622X A CN B200410027622XA CN 200410027622 A CN200410027622 A CN 200410027622A CN 1320069 C CN1320069 C CN 1320069C
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Abstract
The invention relates to a nano titanium dioxide/nano silver coating and a preparation method thereof. The invention is characterized in that two nano particles of nano titanium dioxide and nano silver are used, the coating overcomes the defects of poor stain resistance, poor weather resistance, environmental pollution and the like of the existing coating, and simultaneously has new functions of self-cleaning, sterilization, disinfection, air purification and the like. Further improves the antibacterial property of the coating, ensures that the coating still has good antibacterial effect under the condition of darkness or dryness, and greatly enlarges the application range.
Description
Technical field
The present invention relates to building material field, particularly a kind of environment-friendly type nano titanium dioxide/nanometer silver coating and preparation method thereof with good germ resistance.
Background technology:
Because nano titanium oxide has special photocatalysis performance, Superhydrophilic, shielding ultraviolet rays performance, apply it to coating and make it in coating, keep the nano level state, not only can improve shortcomings such as poor, the easy contamination of existing coating weathering resistance, also can give coating good antibacterial property, self-cleaning property and the performance that purifies air simultaneously, can be widely used in the top grade decoration of family, school, hospital, kindergarten, high-grade hotel, commercial building, in southern high humidity and with serious pollution place, have more the market competitiveness.
Nanometer titania coating can remove bacterium, purify air, be because it is under the condition of light or water, electronics on its valence band is excited to conduction band, produce the hole on valence band, unbound electron-hole has the very active oxygen and the OH free radical of high reaction activity to making the activation of oxygen and water, producing, airborne obnoxious flavour (oxynitride, sulfurous gas, formaldehyde, benzene, ammonia, acetone etc.) and bacterium there are very strong Degradation, thereby give the coating good antibacterial property and the performance that purifies air.
By as can be seen top: nanometer titania coating only just has germ resistance and the performance that purifies air under the condition of light or water, and this will limit it in dark area or dry geographic application.
Silver has excellent antibiotic, germicidal action, and is not subjected to the influence of envrionment conditions.A long time ago, Mongolian clansman just finds can be fresh-keeping with silver dinner set splendid attire goat milk.Before B.C. more than 300 years, Greece kingdom leads troops the emperor Alexandria when eastward fight, suffers tropical dysentery infection, most of soldiers death of falling ill, but emperor and officers are owing to use the silverware tool, can sterilizations, thereby seldom dye disease.Botanist's clarke woods of Switzerland in 1893 is found can kill bacterium in the algae with the silver ions of 0.01 μ g/L.
The diameter of nanometer silver is little, and contact area is big, and its sterilization effect is the hundred times of common silver.
Nanometer silver and nano titanium oxide are combined, can further improve the germ resistance of coating.On the one hand, nanometer silver exists as impurity, can strengthen the photocatalysis performance of nano titanium oxide; On the other hand, nanometer silver slowly releases Ag
+, can destroy bacterial cell membrane or attract the thin base of zymoprotein in the bacterial body consumingly, and combine rapidly, reduce the activity of protista organized enzyme, have very strong bactericidal properties, and be not subjected to the influence of ambient conditions (Guang Heshui).
Like this, the coating that makes all has good antibacterial property in darkness or exsiccant area, has enlarged its use range greatly.
Summary of the invention
An object of the present invention is to provide a kind of coating that nano titanium oxide and nanometer silver organically can be combined and preparation method thereof, solve existing poor, the problems such as weathering resistance is poor, not environmental protection of coating contamination resistance, new function such as give the good self-cleaning property of coating, germ resistance simultaneously and purify air.
Another object of the present invention is add nanometer silver in coating after, further improves the anti-microbial property of coating, makes it use the influence that is not subjected to envrionment conditions, enlarges its use range.
Therefore, the present invention is achieved in that
A kind of nano titanium oxide/nanometer silver coating is characterized in that this coating includes nano titanium oxide and nanometer silver.
Specifically, described nano titanium oxide/nanometer silver coating, it is to make according to following prescription:
Water: 50-300 kilogram; Dispersion agent: 5-12 kilogram;
Wetting dispersing agent: 0.1-1 kilogram; Defoamer: 1-5 kilogram;
Thickening material: 1-15 kilogram; Film coalescence aid: 5-15 kilogram;
Flow agent: 1-15 kilogram; Nano titanium oxide dispersion 10-100 kilogram;
Nano silver solution 10-100 kilogram; Titanium dioxide: 30-400 kilogram;
Superfine alumina silicate: 10-50 kilogram; Zinc sulfide white: 0-150 kilogram;
Light calcium carbonate: 0-250 kilogram; Water-ground limestone: 0-150 kilogram;
Talcum powder: 0-100 kilogram; Wollastonite powder: 0-150 kilogram;
Base-material: 100-500 kilogram;
Wherein, dispersion agent, defoamer, thickening material, flow agent, wetting dispersing agent and film coalescence aid are the frequent product that adopts of preparation coating.Dispersion agent comprises the SN-DISPERSANT series dispersion agent of Japanese Nuo Puke company, the OROTAN series dispersion agent of U.S. Rhom and Hass, the Disperbyk series dispersion agent of Germany Bi Kehua company, the Texaphor series dispersion agent of Henkel Corp., Hydropalat series dispersion agent, the DP series dispersion agent of Deuchem Co., Ltd., the EFKA series dispersion agent of Holland EFKA auxiliary agent company, EFKA-POLYMER series dispersion agent, EFKA-LP series dispersion agent, the Dispers series dispersion agent of German Di Gao company etc.; Defoamer comprises the Foamstar series defoamer of Henkel Corp., the Byk series defoamer of German Bi Kehua company, the Efka series defoamer of Dutch EFKA auxiliary agent etc.; Thickening material comprises Acrysol series thickening material, the ether of cellulose thickening material of U.S. Rhom and Hass, the Rheolate thickening material series of strength brightness company etc.; Flow agent comprises the Rheolate series flow agent of the RM of U.S. Rhom and Hass series flow agent, strength brightness company etc.; Film coalescence aid comprises the Texano1 acid esters of Yi Shi Man, the Filmer series film coalescence aid of Henkel Corp. etc.; Wetting dispersing agent is the PE series wetting dispersing agent of Henkel Corp. etc.
Titanium dioxide is a white, as the representative of pigment, prepares the coating of other color if desired, then increases the pigment of other color again in this prescription.
Described base-material is any one or its mixture arbitrarily in pure third, phenylpropyl alcohol, vinegar third, the organosilicon crylic acid latex.
Described nano titanium oxide is rutile-type, anatase titanium dioxide, plate titanium type, mixed crystal type and armorphous.
Described nano-titania particle diameter range is 1-100nm, and the particle diameter of nanometer silver is 1-200nm.
The preparation method of above-mentioned nano titanium oxide/nanometer silver coating is:
(1) nano titanium oxide stoste and Nano silver solution are mixed, form nano titanium oxide/nanometer silver mixed solution;
(2) above-mentioned nano titanium oxide/nanometer silver mixed solution, film coalescence aid, wetting dispersing agent, dispersion agent, flow agent, defoamer, water, titanium dioxide, zinc sulfide white, superfine alumina silicate, talcum powder, wollastonite, light calcium carbonate and water-ground limestone are added agitation vat after the weighing respectively, mixing and stirring, rotating speed is controlled at 1000～2000rmin
-1, stir 20-60min, get slurry.
(3) above-mentioned slurry is ground to suitable fineness through sand mill or three-roller.
(4) emulsion binder is joined in the above-mentioned slurry, add thickening material, can obtain product to certain viscosity.
In the above-mentioned step (3), the fineness requirement of grinding≤60 μ m (exterior coating), or≤50 μ m (interior wall coating).
In the above-mentioned step (4), require control viscosity in suitable scope, add thickening material to Si Tuomo viscosity 90-110K.
The present invention has solved the technical barrier that nanoparticle is easily reunited well in coating system, the coating that makes has good weathering resistance, abrasion resistance, contamination resistance, germ resistance, self-cleaning property and the performance that purifies air.By adding nanometer silver, further improved the germ resistance of coating, make it still have good antibacterial property in darkness or exsiccant area, enlarged use range greatly.
Embodiment
Embodiment one:
The preparation prescription of present embodiment is:
Tap water: 220 kilograms; Dispersion agent: 8 kilograms;
Defoamer: 4 kilograms; Wetting dispersing agent: 0.2 kilogram;
Thickening material: 20 kilograms; Flow agent: 10 kilograms;
Film coalescence aid: 15 kilograms; Benzene emulsion: 150 kilograms;
Titanium dioxide: 60 kilograms; Nano silver solution: 20 kilograms;
Nano titanium oxide dispersion: 20 kilograms; Superfine alumina silicate: 20 kilograms;
Talcum powder: 80 kilograms; Zinc sulfide white: 120 kg;
Water-ground limestone: 100 kilograms; Weight matter lime carbonate: 100 kilograms.
Its preparation side dispel into:
(1) nano titanium oxide dispersion/Nano silver solution is mixed.
(2) with the nano titanium oxide/nanometer silver granuel mixed solution, film coalescence aid, the flow agent that mix.Dispersion agent, wetting dispersing agent, defoamer, water, titanium dioxide, superfine alumina silicate, talcum powder, zinc sulfide white, water-ground limestone, light calcium carbonate add agitation vat after the weighing respectively, stir, and rotating speed is controlled at 1100r/min, stir 30min, get slurry;
(3) above-mentioned slurry is ground to fineness≤40 μ m through sand mill or three-roller.
(4) benzene emulsion is joined in the above-mentioned slurry, adding thickening material is 100K to Si Tuomo viscosity, can obtain product.
Embodiment two:
The preparation prescription of present embodiment is:
Tap water: 100 kilograms; Dispersion agent: 6 kilograms;
Defoamer: 5 kilograms; Thickening material: 5 kilograms;
Flow agent: 3 kilograms; Film coalescence aid: 5 kilograms;
0.3 kilogram of organosilicon crylic acid latex of wetting dispersing agent: 300 kilograms
Superfine alumina silicate: 10 kilograms; Titanium dioxide: 300 kilograms;
Talcum powder: 40 kilograms; Light calcium carbonate: 50 kilograms;
Wollastonite: 100 kilograms; Nano silver solution: 10 kilograms;
Nano titanium oxide dispersion: 10 kilograms.
Its preparation method is:
(1) nano titanium oxide dispersion and Nano silver solution are mixed.
(2) nano titanium oxide/nanometer silver mixed solution, wetting dispersing agent, film coalescence aid, flow agent, dispersion agent, defoamer, water, talcum powder, titanium dioxide, superfine alumina silicate, wollastonite, the light calcium carbonate that mixes added agitation vat after the weighing respectively, stir, rotating speed is controlled at 1200r/min, stir 20min, get slurry;
(3) above-mentioned slurry is ground to fineness≤50 μ m through sand mill or three-roller.
(4) organosilicon crylic acid latex is added in the above-mentioned slurry, adding thickening material is 100K to Si Tuomo viscosity, can obtain product.
Embodiment three:
The preparation prescription of present embodiment is:
Tap water: 200 kilograms; Dispersion agent: 10 kilograms;
Defoamer: 5 kilograms; Thickening material: 15 kilograms;
Flow agent: 6 kilograms; Film coalescence aid: 12 kilograms;
0.1 kilogram of acrylate and vinyl acetate emulsion of wetting dispersing agent: 200 kilograms
Superfine alumina silicate: 10 kilograms; Titanium dioxide: 200 kilograms;
Talcum powder: 50 kilograms; Light calcium carbonate: 70 kilograms;
Zinc sulfide white: 120 kg; Water-ground limestone: 80 kilograms;
Nano silver solution: 10 kilograms; Nano titanium oxide dispersion: 30 kilograms.
Its preparation method is:
(1) nano titanium oxide stoste and Nano silver solution are mixed.
(2) nano titanium oxide/nanometer silver mixed solution, film coalescence aid, flow agent, dispersion agent, wetting dispersing agent, defoamer, water, titanium dioxide, superfine alumina silicate, talcum powder, zinc sulfide white, water-ground limestone, the light calcium carbonate that mixes added agitation vat after the weighing respectively, stir, rotating speed is controlled at 1000r/min, stir 30min, get slurry;
(3) above-mentioned slurry is ground to fineness≤50 μ m through sand mill or three-roller.
(4) acrylate and vinyl acetate emulsion is added in the above-mentioned slurry, adding thickening material is 99K to Si Tuomo and degree, can obtain product.
Embodiment four:
The preparation prescription of present embodiment is:
Tap water: 100 kilograms; Dispersion agent: 8 kilograms;
Defoamer: 4 kilograms; Thickening material: 15 kilograms;
Flow agent: 10 kilograms: film coalescence aid: 9 kilograms;
0.5 kilogram of pure-acrylic emulsion of wetting dispersing agent: 400 kilograms
Superfine alumina silicate: 20 kilograms; Titanium dioxide: 300 kilograms;
Talcum powder: 50 kilograms; Wollastonite: 50 kilograms
Nano silver solution: 20 kilograms; Nano titanium oxide dispersion: 40 kilograms.
Its preparation method is:
(1) nano titanium oxide stoste and Nano silver solution are mixed.
(2) nano titanium oxide/nanometer silver mixed solution, film coalescence aid, flow agent, dispersion agent, wetting dispersing agent, defoamer, water, titanium dioxide, superfine alumina silicate, talcum powder, the wollastonite that mixes added agitation vat after the weighing respectively, stir, rotating speed is controlled at 1200r/min, stir 30min, get slurry;
(3) above-mentioned slurry is ground to fineness≤40 μ m through sand mill or three-roller.
(4) pure-acrylic emulsion is added in the above-mentioned slurry, adding thickening material is 110K to Si Tuomo viscosity, can obtain product.
Claims (6)
1. nano titanium oxide/nanometer silver coating is characterized in that this coating includes nano titanium oxide and nanometer money kind nanoparticle, and each component and weight proportion are:
Water: 50-300 kilogram; Dispersion agent: 5-12 kilogram;
Wetting dispersing agent: 0.1-1 kilogram; Defoamer: 1-5 kilogram;
Thickening material: 1-15 kilogram; Film coalescence aid: 5-15 kilogram;
Flow agent: 1-15 kilogram; Nano titanium oxide dispersion: 10-100 kilogram;
Nano silver solution: 10-100 kilogram; Titanium dioxide: 30-400 kilogram;
Superfine alumina silicate: 10-50 kilogram; Zinc sulfide white; The 0-150 kilogram;
Light calcium carbonate: 0-250 kilogram; Water-ground limestone: 0-150 kilogram;
Talcum powder: 0-100 kilogram; Wollastonite powder: 0-150 kilogram;
Base-material: 100-500 kilogram;
Described base-material is any one or its mixture arbitrarily in pure third, phenylpropyl alcohol, vinegar third, the organosilicon crylic acid latex.
2. nano titanium oxide according to claim 1/nanometer silver coating is characterized in that: described nano titanium oxide is rutile-type, anatase titanium dioxide, plate titanium type.
3, nano titanium oxide according to claim 1/nanometer silver coating is characterized in that: described nano titanium oxide is a mixed crystal type and armorphous.
4. nano titanium oxide according to claim 1/nanometer silver coating is characterized in that: the nano-titania particle diameter range is 1-100nm, and the particle diameter of nanometer silver is 1-200nm.
5. the preparation method of nano titanium oxide as claimed in claim 1/nanometer silver coating is characterized in that the coating preparation process is:
(1) nano titanium oxide dispersion and Nano silver solution are mixed, form nano titanium oxide/nanometer silver mixed solution:
(2) above-mentioned nano titanium oxide/nanometer silver mixed solution, film coalescence aid, Ricinate, dispersion agent, flow agent, defoamer, water, titanium dioxide, zinc sulfide white, superfine alumina silicate, talcum powder, wollastonite, light calcium carbonate and water-ground limestone are added agitation vat after the weighing respectively, mix and stir, obtain slurry;
(3) above-mentioned slurry is ground to fineness≤60 μ m through sand mill or three-roller;
(4) base-material is joined in the above-mentioned slurry, add thickening material, can obtain product to Si Tuomo viscosity 90-110K.
6. the preparation method of nano titanium oxide according to claim 5/nanometer silver coating, when it is characterized in that preparing slurry, during with nano titanium oxide/nanometer silver mixed solution, dispersion agent, Ricinate, film coalescence aid, flow agent, defoamer, water, titanium dioxide, zinc sulfide white, superfine alumina silicate, talcum powder, wollastonite, light calcium carbonate, water-ground limestone mixing stirring, rotating speed is controlled at 1000～2000rmin
-1, churning time is 20-60min.
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| CNB200410027622XA CN1320069C (en) | 2004-06-15 | 2004-06-15 | Nano titanium dioxide/nano silver coating and preparation method thereof |
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| CNB200410027622XA CN1320069C (en) | 2004-06-15 | 2004-06-15 | Nano titanium dioxide/nano silver coating and preparation method thereof |
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| CN1320069C true CN1320069C (en) | 2007-06-06 |
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