Summary of the invention
Technical problem to be solved by this invention is the deficiency that overcomes prior art, and a kind of improved nano coating additive is provided, and its good stability in coating is not prone to secondary agglomeration.
The present invention also will provide a kind of coating composition, its good decorating effect, and production cost is low.
For solving above technical problem, a kind of technical scheme that the present invention takes is: a kind of nano coating additive, and it comprises the nano material and the borax of particle or powder type; Wherein, the content of nano material is 95%~99% (weight), and the content of borax is 1%~5% (weight); This nano coating additive prepares through following method: the borax of formula ratio is placed 75 ℃~95 ℃ water; Insulated and stirred added nano material more than 20 minutes, continued insulated and stirred and obtained suspension-s more than 40 minutes; Stop to stir, suspension-s is placed to be dried under 110 ℃~130 ℃ of the temperature promptly get.
According to a concrete aspect of the present invention, the preparation process of said paint additive is: water is joined in the reactor drum, start stirring; Add borax, be warming up to 80 ℃~90 ℃, insulated and stirred 25~40 minutes; Add nano material, continue insulated and stirred and obtained suspension-s in 50~70 minutes, reduce to room temperature; Stop to stir, under 110 ℃~120 ℃, be dried to dried.
In the nano material additive according to the invention, nano material includes but not limited to nano titanium oxide, nano silicon, nano aluminium oxide, nano zine oxide, nanometer silver.Yet, when the purposes of adding nano material is that the above-mentioned nano material of enumerating is preferred when being used for antibiotic, mildew-resistant.
In the preparation process of above-mentioned coating additive, the preferred deionized water of used water.The consumption of water is generally nano material and borax gross weight 4~20 times.
The another technical scheme that the present invention takes is: a kind of coating composition is a benchmark with its gross weight, is grouped into by following one-tenth: film forming base-material 20~45%; Pigment 0~20%; Filler 0~30%, solvent 5~45%, paint additive 0.01~2%, auxiliary agent 0.01~10%; Wherein, auxiliary agent is to be selected from dispersion agent, flow agent, wetting agent, skimmer, sterilant, pH regulator agent, matting agent and the thickening material one or more.
According to coating composition of the present invention; Said film forming base-material can be one or more the combination in aqueous acrylic emulsion, water-borne acrylic resin, solvent-borne type Synolac, urethane resin, vibrin and the nitro-resin, and those skilled in the art can select according to the concrete Application Areas and the needs of coating.
A concrete aspect according to coating composition; Coating composition is as interior wall coating, and a representational prescription is following: aqueous acrylic emulsion 20%~25%, white titanium pigment 12%~17%, talcum powder 8%~12%, dicalcium powder 13%~16%, deionized water 30%~40%, paint additive 0.2%~0.6%, auxiliary agent 2%~3%.In a more particular embodiment, the composition of coating composition is: aqueous acrylic emulsion 20%, white titanium pigment 15%, talcum powder 10%, dicalcium powder 15%, deionized water 36.7%, nano coating additive: auxiliary agent 2.8% (being weight percentage) 0.5%.
Those skilled in the art should understand, and paint additive according to the invention can make an addition to but be not limited to coating such as water-based coating for internal and external wall, decorations polyester lacquer, nitrocellulose woodenware articles made of bamboo lacquer.
Because the technique scheme utilization, the present invention compared with prior art has following advantage:
1, nano coating additive of the present invention is to utilize the water-soluble of borax and molecule bonding force; Nano grain surface is coated processing; Make nano material be in steady state; Be difficult for because of secondary agglomeration occurring particle increase, effect being reduced, the usage quantity in coating is relatively low, and production cost significantly reduces than traditional nano paint.
2, under the prerequisite that reaches the identical functions effect, nano coating additive lacks than the addition of traditional nanometer additive in the coating composition of the present invention, thereby cost is lower; Simultaneously since nano coating additive can be in system stable dispersion, be difficult for reuniting, therefore, the exquisiteness of filming of coating, level and smooth is at utmost brought into play the decorative effect of coating.
Embodiment
Below in conjunction with concrete embodiment the present invention is done further detailed explanation, but the invention is not restricted to these embodiment.
Embodiment 1
Nano coating additive according to present embodiment prepares through following steps: 300 kilograms of deionized waters are joined in the reactor drum, start stirring, add 0.5 kilogram of borax; Be warming up to about 85 ℃, insulated and stirred added 25 kilograms of nano titanium oxides about 30 minutes; Continue insulated and stirred and obtain suspension-s about 60 minutes; Reduce to room temperature, stop to stir, under 110~120 ℃, be dried to and promptly get.
Consisting of of this routine nano coating additive: nano titanium oxide 98.04%, borax 1.96%.
Embodiment 2
Nano coating additive according to present embodiment prepares through following steps: 300 kilograms of deionized waters are joined in the reactor drum, start stirring, add 0.8 kilogram of borax; Be warming up to about 85 ℃, insulated and stirred added 10 kilograms of nano titanium oxides, 10 kilograms of nano zine oxides, 5 kilograms of nanometer silvers about 30 minutes; Continue insulated and stirred and obtain suspension-s about 60 minutes; Reduce to room temperature, stop to stir, under 110~120 ℃, be dried to and promptly get.
Consisting of of this routine nano coating additive: nano titanium oxide 38.76%, nano zine oxide 38.76%, nanometer silver 19.38%, borax 3.1%.
Embodiment 3
A kind of nano paint compsn; It is as the interior wall nano-latex; By weight, composition of raw materials is following: the nano coating additive 0.5% of aqueous acrylic emulsion 20%, white titanium pigment 15%, talcum powder 10%, dicalcium powder 15%, deionized water 36.7%, embodiment 1, dispersion agent 0.45%, wetting agent 0.1%, skimmer 0.45%, sterilant 0.1%, Natvosol 0.25%, pH regulator agent 0.45%, alkali dissolve type thickening material 1%.
The nano paint preparation of compositions adopts conventional technology of preparing, and is specific as follows: at first, water is added in the dispersion cylinder, low speed (200r/min) stirs, and adds dispersion agent, wetting agent, skimmer, sterilant, Natvosol slowly, stirs 15 minutes; Add white titanium pigment, talcum powder, dicalcium powder, nano coating additive then, (800r/min) disperseed 30 minutes at a high speed, cross sand mill and grind 2 to 3 times, to fineness be qualified less than 50 microns; At last, under middling speed (500r/min) agitation condition, add aqueous acrylic emulsion, pH regulator agent, the molten type thickening material of alkali slowly, continue stirring and promptly got in 30 minutes.
The main performance index of present embodiment nano paint compsn is following:
Paint film appearance: smooth smooth;
Surface drying time: 2h;
Do solid work the time: 4h;
Contrast ratio 0.92;
Intestinal bacteria killing rate 95%;
Formaldehyde rate of decomposition (7d) 85%.
Embodiment 4
A kind of nano paint compsn; By weight, it is made up of following component: the nanometer additive 0.8% of vibrin 70.00%, YLENE 14.75%, N-BUTYL ACETATE 10.00%, mute powder 3.00%, wax slurry 1.00%, flow agent 0.30%, skimmer 0.15%, embodiment 2.
Above-mentioned nano paint preparation of compositions adopts routine techniques, is specially: vibrin is added to disperses in the cylinder, stirring at low speed adds nano coating additive, mute powder, wax slurry, flow agent, skimmer, high speed dispersion 30 minutes slowly.Middling speed stirs, and adds YLENE, N-BUTYL ACETATE, continues to stir 20 minutes.Be packaged into 5 kilograms/barrel.
Gained nano paint compsn can constitute the mute light wood lacquer of polyester with the polyurethane curing agent of 2.5 kilograms of/barrel independent packagings.Polyurethane curing agent is defined as the A component; The nano paint compsn is defined as the B component.First, component B is by with barrelage vanning, during construction, and first by weight: second=stir at 1: 2, leave standstill and cross 200 order filter clothes, spraying application after 20 minutes.
The main performance index of the mute light wood lacquer of present embodiment polyester is following:
Paint film appearance: smooth smooth;
Surface drying time: 0.5h;
Do solid work the time: 4h;
Hardness H;
Intestinal bacteria killing rate 98%;
Formaldehyde rate of decomposition (7d) 75%.
Embodiment 5
A kind of nano paint compsn; By weight, it is made up of following component: the nano coating additive 1.00% of vibrin 50.00%, talcum powder 20.00%, YLENE 8.00%, N-BUTYL ACETATE 4.00%, 30% nitro-cotton liquid 15.00%, Zinic stearas 2.00%, embodiment 1.Wherein, 30% nitro-cotton liquid is that 0.5 second nitro-cotton is dissolved in 7 parts of vinyl acetic monomers for 3 parts and obtains.
Above-mentioned nano paint preparation of compositions adopts routine techniques, is specially: at first 0.5 second nitro-cotton is dissolved in for 3 parts and makes 30% nitro-cotton liquid in 7 parts of vinyl acetic monomers, and subsequent use.Vibrin is joined in the dispersion cylinder, and stirring at low speed adds nitro-cotton liquid, talcum powder, nanometer additive, Zinic stearas slowly, high speed dispersion 30 minutes.Middling speed stirs again, adds YLENE, N-BUTYL ACETATE slowly, continues to stir 20 minutes, is packaged into 5 kilograms/barrel.
Gained nano paint compsn can constitute polyester nitrocellulose woodenware priming paint with the polyurethane curing agent of 5 kilograms of/barrel independent packagings.Polyurethane curing agent is defined as the A component; The nano paint compsn is defined as the B component.
With first, component B by with barrelage vanning, first by weight during construction: second=stir at 1: 1, leave standstill and cross 200 order filter clothes, spraying application after 20 minutes.
The main performance index of present embodiment polyester nitrocellulose woodenware priming paint is following:
Paint film appearance: smooth;
Surface drying time: 0.5h;
Do solid work the time: 4h;
Hardness HB;
Intestinal bacteria killing rate 92%;
Formaldehyde rate of decomposition (7d) 90%.
More than the described various auxiliary agent names of each embodiment be called the coating industry common name, can adopt like domestic and international respective name product such as ROHM AND HAAS, Henkel, Jiangsu sunrise.
The foregoing description only is explanation technical conceive of the present invention and characteristics, and its purpose is to let the personage who is familiar with this technology can understand content of the present invention and enforcement according to this, can not limit protection scope of the present invention with this.All equivalences that spirit is done according to the present invention change or modify, and all should be encompassed within protection scope of the present invention.