CN102702889A - Anti-bacterial water-based paint and preparation method thereof - Google Patents
Anti-bacterial water-based paint and preparation method thereof Download PDFInfo
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- Paints Or Removers (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention relates to anti-bacterial water-based paint and a preparation method thereof. The paint comprises the following components in parts by weight: 0.2-11 parts of anti-bacterial agent, 8-33 parts of nano material, 23-64 parts of water-based resin dispersoid and 0.75-18 parts of adhesive resin or plasticizer. The preparation method comprises the following steps: firstly preparing a nano silver anti-bacterial agent; mixing deionized water, the anti-bacterial agent, a wetting agent, a dispersing agent and a defoaming agent and uniformly mixing, adding the nano material, uniformly dispersing to obtain the water-based dispersoid; adding the obtained water-based dispersoid to the mixed emulsion or water-based resin dispersoid, then adding the adhesive resin or plasticizer and various conventional assistants, stirring and dispersing evenly; adding pigments or colorant; and supplementing water to obtain the anti-bacterial water-based paint. The long-acting broad-spectrum antibacterial water-based paint has high fungicidal efficiency (more than 99%) on escherichia coli, staphylococcus aureus, black varietas of bacillus subtilis and the like and can reduce the high concentrate of organic matters of formaldehyde to the range of specified concentration index.
Description
Technical field
The invention belongs to technical field of aqueous paint, be specifically related to a kind of antibacterial waterborne paint.The invention still further relates to the preparation method of antibacterial waterborne paint.
Background technology
Along with the raising of global environmental consciousness, people are urgent further to the demand of functional environment-friendly coating.Adopt traditional solvent paint to produce harm to HUMAN HEALTH, environment, especially when indoor use, it is long that deleterious organic solvents such as benzene class continue the volatilization time, the health and lives safety that directly endangers the people.Can make illnesss such as the people headache occurs, feels sick, throat pain, asthma such as volatile organic compounds.Free isocyanate belongs to the induction type characteristic of concentration and poisons compound by force, can cause bronchitis, asthma even suffocates.Benzene is high malicious carcinogenic substance, mainly influences hemopoietic system, neural system.With water is solvent, does not contain benzene,toluene,xylene, does not contain objectionable impuritiess such as free isocyanate, and human body is not had harm, environmentally safe.Through adopting the water-based and the powder coating of low volatility, be the effective means that reduces source of pollution.
Coating must be considered its usefulness and toxicity problem with antiseptic-germicide, and security is an important factor of considering use value.At present, the antiseptic-germicide of coating employing mainly contains organic antibacterial agents such as substituted arene class, heterogeneous ring compound, aminated compounds and organometallic compound.All there are a series of problems in organic antibacterial agent at aspects such as security, slow-releasing, weather resistance, thermotolerances.
CN 101486863A discloses a kind of antibacterial waterborne paint and preparation method thereof.Water-borne coatings comprises that component and weight percent thereof are following: deionized water 5-15%, sterilant 0.5-5%, skimmer 0.05-1.0%, dispersion agent 3-15%; Nano material 10-25%, aqueous resin dispersion 30-70%, sticking power resin or softening agent 0.5-10%, wetting agent 0.3-5%; Flow agent 0.1-1.0%, thickening material 0-1.0%, pH regulator agent 0.05-1.0%; Pigment or tinting material 0-15%, special function additive 0-8%, solidifying agent 1-10%.Above-mentioned component is mixed according to certain step, stir, regulate viscosity, make finely dispersed water-borne coatings.The antibiotic paint of this invention mainly is to the research and development of children's plastics, has a lot of problems when being applied to trade sales coating.
All there is advantage in inorganic antiseptic at aspects such as security, persistence, broad-spectrum antimicrobial type, thermotolerances, so its application and research more and more receive people's attention.The bacterinertness of inorganic antiseptic institute inherent high stability, excellence, safe, become the main flow that antiseptic-germicide is studied.But because some metals ions with antibacterial ability have toxicity or cost is too high; The antibiotic ion that extensively adopts at present only limits to two kinds on silver, zinc; Wherein the antibacterial ability of silver ions is the strongest; List sees that from antibacterial ability it is the optimal selection of inorganic antiseptic, and the toxicity of silver also is far smaller than zinc in addition, so be the optimal selection of inorganic antiseptic.Also there are some problems in inorganic antiseptic: at first be antibiotic stability problem.Because the inorganic antiseptic majority contains silver ions, be prone to be transformed into brown silver suboxide or be reduced into black simple substance silver through ultraviolet catalyzed, variable color has not only reduced its bacterinertness, is applied in white or the light-coloured coating and goes but also limit it.Secondly the silver-colored cost of a large amount of uses is high, has restricted it in wider application.Two above-mentioned technical barriers have seriously restricted the popularization and the use of inorganic antiseptic, become the biggest problem in this industry.
Summary of the invention
The technical problem that the present invention will solve is in order to overcome technological deficiency recited above; Provide a kind of to sticking power is good, paint film is plentiful, have certain degree of hardness, hang down VOC, heavy metal free; Have antibacterial waterborne paint antibiotic, antimildew function, and the preparation method of this water-borne coatings is provided.
In order to solve technical problem recited above, the present invention takes following technical scheme:
The present invention at first provides a kind of antibacterial waterborne paint, comprises that component and parts by weight thereof are following:
Antiseptic-germicide 0.2-11; Nano material 8-33; Aqueous resin dispersion 23-64; Sticking power resin or softening agent 0.75-18.
Described aqueous resin dispersion requires not contain free monomer, does not contain triphen, VOC low (≤100g/L).Aqueous resin dispersion of the present invention is the mixture of a kind of in acrylic dispersion, urethane resin dispersion-s, polyester resin dispersion, Synolac dispersion-s or the epoxy resin dispersion or at least two kinds; Urethane resin dispersion-s for example; Synolac dispersion-s/epoxy resin dispersion, acrylic dispersion/urethane resin dispersion-s/polyester resin dispersion etc.The parts by weight of said aqueous resin dispersion are 23-64,23.5-63 for example, 28-57,33-50,38-45,42 etc., further preferred 25-50, most preferably 35.
Nano material of the present invention is the mixture of a kind of in nano titanium oxide, nano zine oxide or the nano-scale silver powder or at least two kinds; Nano titanium oxide for example; Nano zine oxide/nano-scale silver powder, nano titanium oxide/nano zine oxide/nano-scale silver powder etc.The parts by weight of said nano material are 8-33,8.3-32 for example, 11-29,15-24,18-22 etc., further preferred 13-24, most preferably 18.
Sticking power resin according to the invention or softening agent parts by weight are 0.75-18, for example can select 0.8-16,3-12,6-9,7.6 etc., further preferred 1.2-13, most preferably 6.
Antiseptic-germicide of the present invention is a nano silver antimicrobials.Antiseptic-germicide parts by weight in the present invention are 0.2-11, for example can select 0.22-10.5,0.8-8,2-5,3 etc., further preferred 1.5-6, most preferably 4.5.
As optimal technical scheme, said antibacterial waterborne paint comprises that component and parts by weight thereof are following: antiseptic-germicide 1.5-6; Nano material 13-24; Aqueous resin dispersion 25-50; Sticking power resin or softening agent 1.2-13.
As the most preferred technique scheme, said antibacterial waterborne paint comprises that component and parts by weight thereof are following: antiseptic-germicide 4.5; Nano material 18; Aqueous resin dispersion 35; Sticking power resin or softening agent 6.
Realize antibacterial and antimildew function through antiseptic-germicide and combination with nano material of antibacterial and antimildew function.
Further, said nanometer silver antimicrobial agent compounding method is following: at first dispose the nanometer silver mother liquor, its proportioning by weight is:
As optimal technical scheme, said nanometer silver mother liquor proportioning by weight is: nano silver colloid 22-35; Pure water 13-20; Alcoholic solvent 30-60; Coating-forming agent 17-30; Dispersion agent 0.9-2.8.
As the most preferred technique scheme, said nanometer silver mother liquor proportioning by weight is: nano silver colloid 28; Pure water 16; Alcoholic solvent 47; Coating-forming agent 24; Dispersion agent 2.
Utilize above-mentioned nanometer silver mother liquor preparation of nano silver antibacterial agent then, it according to the parts by weight proportioning is:
As optimal technical scheme, utilize nanometer silver mother liquor preparation of nano silver antibacterial agent, it according to weight proportion is: nanometer silver mother liquor 8-16; Solvent 52-70; Stablizer 12-17; Dispersion agent 1.3-2.
As the most preferred technique scheme, utilize nanometer silver mother liquor preparation of nano silver antibacterial agent, it according to weight proportion is: nanometer silver mother liquor 12; Solvent 60; Stablizer 15; Dispersion agent 1.8.
The preparation method of nano silver antimicrobials according to the invention is following: at first nano-class silver colloidal solution and pure water are added in the toughened glass container; Adding dispersion agent and coating-forming agent simultaneously makes its hybrid reaction even through stirring fully; Be that alcoholic solvent, coating-forming agent, dispersion agent add in stirring in order, and tightly sealing, purge then; Use gamma ray continuously irradiating reaction soln at last, promptly accomplish the configuration of nanometer silver mother liquor this moment; Earlier with placing a part of solvent in the container, add the nanometer silver mother liquor afterwards while stirring afterwards, treat that above-mentioned nanometer silver mother liquor uniform mixing is in solvent after; Add stablizer and dispersion agent while stirring; Add remaining solvent again, fully stirring makes hybrid reaction even, leaves standstill to get final product.
Described coating also comprises pigment or tinting material; Described pigment or tinting material are the mixture of a kind of in pigment dyestuff, dyestuff, transparent ferric oxide, pearly pigment, polygonal effect pigment or the metallic pigment or at least two kinds.Selected pigment will meet hygienic safety standard (heavy metal must not exceed standard) just can be adopted.
Said coating also comprises solidifying agent; Described solidifying agent is the mixture of a kind of in XA 1007, carbodiimide or the trimeric cyanamide or at least two kinds.
Other auxiliary agent such as dispersion agent, flow agent, thickening material, anti-settling agent etc. are close with common coating, select zero or low VOC, do not contain the product of APE.
The present invention can also comprise special function additive select rust-preventive agent for use, improve hardness of paint film increase hard agent, reduce gloss of film matting agent, scratching resistant, improve the paint film feel slip(ping)agent, prevent coating laminate the antiblocking agent of adhesion, for process two components lacquers and improve over-all properties linking agent, make coating have the hydrophober, anti-wear agent, anti-aging and prevent the uv-absorbing agent of flavescence, a kind of or its combination of sweetener of lotus leaf effect.
The present invention also provides a kind of preparation method of antibacterial waterborne paint, may further comprise the steps:
A, at first prepare nano silver antimicrobials;
B, with deionized water, antiseptic-germicide, wetting agent, dispersion agent, skimmer mixing and stirring, add nano material, obtain aqueous dispersion after being uniformly dispersed;
C, the aqueous dispersion that obtains step B add in the emulsion or aqueous resin dispersion that stirs, and add sticking power resin or softening agent, wetting agent, flow agent, thickening material, anti-settling agent again, pH regulator agent dispersed with stirring is even;
C, adding pigment or tinting material;
D, moisturizing make antibacterial waterborne paint.
The antibacterial waterborne paint that makes filters and packages after qualified through detecting.
Compare with the prior art scheme, the present invention has following beneficial effect:
Antibacterial waterborne paint provided by the invention can be used for children's plastics, also can be used for the goods relevant with all plastics, also can be used for fields such as metal, woodenware, paper product, coating for internal and external wall.Plastics carry out surface treatment to plastic basis material earlier before brushing or spraying could brush, and improves the sticking power of water-borne coatings.
Effect antibiotic, degradable organic pollutant that water-borne coatings of the present invention can have been given play to.Long-acting broad-spectrum antibacterial water-based paint compositions of the present invention all can reach more than 99% the germ-killing efficiency of intestinal bacteria, streptococcus aureus, the mutation of withered grass bud robe bacillus black etc., and can the organic concentration of indoor high-concentration formaldehyde be degraded in the set quota concentration (80ppm).In addition, the stability to aging and the Hangzhoupro powder performance of long-acting, broad-spectrum of the present invention Hangzhoupro bacterium water-based paint compositions are improved significantly, thereby have prolonged its work-ing life.
Break through the stability and the long-lasting two big gordian techniquies of nanometer silver, make nanometer silver keep original steady state, do not decompose, problems such as reunion, variable color, add a spot of nano silver antimicrobials and just can reach lasting, long lasting antibacterial effect.
The preparation method of the nano silver antimicrobials stoste that is adopted among the present invention is simple in addition; And configuration technology is simple; The antimicrobial stock solution that comes out through this collocation method made; Have highly stable chemical property, use above-mentioned antimicrobial stock solution to be applied in the coating, only need stir; Do not need in the process of configuration, to adopt other special process and additive, just can use in various oiliness (solvent-borne type) to comprise plastic coating (UV coating, PU coating, SOFT TOUCH/FEEL coating), woodwork coating; Water-based (non-solvent) coating comprises in interior wall coating, the woodwork coating.
Down in the face of further explain of the present invention.But following instance only is a simple and easy example of the present invention, does not represent or limits rights protection scope of the present invention, and interest field of the present invention is as the criterion with claims.
Embodiment
For the present invention is described better, be convenient to understand technical scheme of the present invention, typical case of the present invention but non-restrictive example is following:
Embodiment 1
A kind of antibacterial waterborne paint is by the nano silver antimicrobials of 0.2 weight part; The nano zine oxide of 8 weight parts; 26 parts by weight of acrylic resin dispersions; The sticking power resin or the softening agent of 18 weight parts are processed.Concrete preparation method is following: with deionized water, antiseptic-germicide, wetting agent, dispersion agent, skimmer mixing and stirring, add nano material, obtain aqueous dispersion after being uniformly dispersed; Add the aqueous dispersion that obtains in the emulsion or aqueous resin dispersion that stirs, add sticking power resin or softening agent, wetting agent, flow agent, thickening material, anti-settling agent again, pH regulator agent dispersed with stirring is even; Add pigment or tinting material; Moisturizing makes antibacterial waterborne paint.
Wherein the compound method of nano silver antimicrobials is: at first dispose the nanometer silver mother liquor, its proportioning by weight is: nano silver colloid 13; Pure water 8; Alcoholic solvent 68; Coating-forming agent 13; Dispersion agent 1.
Utilize above-mentioned nanometer silver mother liquor configuration nano silver antimicrobials then, it according to the parts by weight proportioning is: nanometer silver mother liquor 3; Solvent 42; Stablizer 15; Dispersion agent 3.
The preparation method of said nano silver antimicrobials is following: at first nano-class silver colloidal solution and pure water are added in the toughened glass container; Adding dispersion agent and coating-forming agent simultaneously makes its hybrid reaction even through stirring fully; Be that alcoholic solvent, coating-forming agent, dispersion agent add in stirring in order, and tightly sealing, purge then; Use gamma ray continuously irradiating reaction soln at last, promptly accomplish the configuration of nanometer silver mother liquor this moment; Earlier with placing a part of solvent in the container, add the nanometer silver mother liquor afterwards while stirring afterwards, treat that above-mentioned nanometer silver mother liquor uniform mixing is in solvent after; Add stablizer and dispersion agent while stirring; Add remaining solvent again, fully stirring makes hybrid reaction even, leaves standstill to get final product.
Embodiment 2
A kind of antibacterial waterborne paint is by the nano silver antimicrobials of 11 weight parts; The nano titanium oxide of 22 weight parts; The polyester resin dispersion of 23 weight parts; The sticking power resin or the softening agent of 10 weight parts are processed.Its preparation method is with embodiment 1.
Wherein the compound method of nano silver antimicrobials is: at first dispose the nanometer silver mother liquor, its proportioning by weight is: nano silver colloid 42; Pure water 26; Alcoholic solvent 22; Coating-forming agent 9; Dispersion agent 0.3.
Utilize above-mentioned nanometer silver mother liquor configuration nano silver antimicrobials then, it according to the parts by weight proportioning is: nanometer silver mother liquor 25; Solvent 77; Stablizer 8; Dispersion agent 1.4.
The concrete preparation method of nano silver antimicrobials is with embodiment 1.
Embodiment 3
A kind of antibacterial waterborne paint is by the nano silver antimicrobials of 7 weight parts; Nano-scale silver powder/the nano titanium oxide of 33 weight parts; The polyester resin dispersion of 64 weight parts; 0.75 the sticking power resin or the softening agent of weight part are processed.Its preparation method is with embodiment 1.
Wherein the compound method of nano silver antimicrobials is: at first dispose the nanometer silver mother liquor, its proportioning by weight is: nano silver colloid 27; Pure water 21; Alcoholic solvent 45; Coating-forming agent 33; Dispersion agent 3.2.
Utilize above-mentioned nanometer silver mother liquor configuration nano silver antimicrobials then, it according to the parts by weight proportioning is: nanometer silver mother liquor 17; Solvent 60; Stablizer 17; Dispersion agent 0.8.
The concrete preparation method of nano silver antimicrobials is with embodiment 1.
Embodiment 4
A kind of antibacterial waterborne paint is by the nano silver antimicrobials of 5 weight parts; The nano titanium oxide of 21 weight parts; 32 parts by weight of epoxy resin dispersion-ss; The sticking power resin or the softening agent of 17 weight parts are processed.Its preparation method is with embodiment 1.
Wherein the compound method of nano silver antimicrobials is: at first dispose the nanometer silver mother liquor, its proportioning by weight is: nano silver colloid 17; Pure water 21; Alcoholic solvent 42; Coating-forming agent 29; Dispersion agent 2.2.
Utilize above-mentioned nanometer silver mother liquor configuration nano silver antimicrobials then, it according to the parts by weight proportioning is: nanometer silver mother liquor 15; Solvent 57; Stablizer 13; Dispersion agent 2.4.
The concrete preparation method of nano silver antimicrobials is with embodiment 1.
The comparative example
With the disclosed embodiment 1 of CN 101486863A as Comparative Examples of the present invention:
Embodiment 1 (the softest, rubber feel), first component: component B=100: 7
The method for testing performance of antibacterial waterborne paint of the present invention is following:
(1) antimicrobial form plastics water-borne coatings package stability testing method: sample places in the constant temperature oven (temperature is controlled at 50 ± 2 ℃) to place 30 days, or normal temperature left standstill 90 days, observes loose colour, deposition whether to occur or divide water etc., as does not have above-mentioned phenomenon and be chosen as outstanding.
(2) antibacterial waterborne paint volatile organic matter (VOC) and determining heavy metals are carried out according to " interior decoration finishing material limits of harmful substances " GB 18582-2007 standard.
(3) other performance of antimicrobial form plastics water-borne coatings is identical with the water-miscible paint method for testing performance.
Three prepared antibacterial waterborne paints of embodiment of the present invention and comparative example's performance test results contrasts like following table:
Three instances of the present invention are carried out antibiotic detection: select for use streptococcus aureus and intestinal bacteria to test, experimental result is following:
(1) embodiment 1 sample is attached on the watch-glass that scribbles streptococcus aureus, behind 24h, produces antibacterial circle diameter to be: 28-32mm; Sample is attached at and scribbles on the colibacillary watch-glass, behind 24h, produces antibacterial circle diameter to be:: 24-25mm.
(2) embodiment 2 samples are attached on the watch-glass that scribbles streptococcus aureus, behind 24h, produce antibacterial circle diameter to be: 20-21mm; Sample is attached at and scribbles on the colibacillary watch-glass, behind 24h, produces antibacterial circle diameter to be: 31-33mm.
(3) embodiment 3 samples are attached on the watch-glass that scribbles streptococcus aureus, behind 24h, produce antibacterial circle diameter to be: 19-23mm; Sample is attached at and scribbles on the colibacillary watch-glass, behind 24h, produces antibacterial circle diameter to be: 22-27mm.
Applicant's statement; The person of ordinary skill in the field is on the basis of the foregoing description, and is with the concrete content point value of the foregoing description component, combined with the technical scheme of summary of the invention part; Thereby the new numerical range that produces; Also be one of record scope of the present invention, the application is no longer enumerated these numerical ranges for making specification sheets simple and clear.
Applicant's statement, the present invention explains preparation process of the present invention through the foregoing description, but the present invention is not limited to above-mentioned preparation process, does not mean that promptly the present invention must rely on above-mentioned preparation process and could implement.The person of ordinary skill in the field should understand, and to any improvement of the present invention, to the interpolation of the equivalence replacement of raw material that the present invention selects for use and ancillary component, the selection of concrete mode etc., all drops within protection scope of the present invention and the open scope.
Claims (8)
1. an antibacterial waterborne paint is characterized in that, comprises that component and parts by weight thereof are following:
Antiseptic-germicide 0.2-11; Nano material 8-33; Aqueous resin dispersion 23-64; Sticking power resin or softening agent 0.75-18.
2. coating according to claim 1; It is characterized in that described aqueous resin dispersion is the mixture of a kind of in acrylic dispersion, urethane resin dispersion-s, polyester resin dispersion, Synolac dispersion-s or the epoxy resin dispersion or at least two kinds.
3. coating according to claim 1 and 2 is characterized in that, described nano material is the mixture of a kind of in nano titanium oxide, nano zine oxide or the nano-scale silver powder or at least two kinds.
4. according to the described coating of one of claim 1-3, it is characterized in that described antiseptic-germicide is a nano silver antimicrobials;
Preferably, its compound method is following: at first dispose the nanometer silver mother liquor, its proportioning by weight does,
Utilize above-mentioned nanometer silver mother liquor configuration nano silver antimicrobials then, it according to the parts by weight proportioning is:
5. coating according to claim 4; It is characterized in that; The preparation method of said nano silver antimicrobials is following: at first nano-class silver colloidal solution and pure water being added in the toughened glass container, add dispersion agent and coating-forming agent simultaneously and make its hybrid reaction even through stirring fully, is that alcoholic solvent, coating-forming agent, dispersion agent add in stirring in order; And tightly sealing; Purge then, use gamma ray continuously irradiating reaction soln at last, promptly accomplish the configuration of nanometer silver mother liquor this moment; Earlier with placing a part of solvent in the container, add the nanometer silver mother liquor afterwards while stirring afterwards, treat that above-mentioned nanometer silver mother liquor uniform mixing is in solvent after; Add stablizer and dispersion agent while stirring; Add remaining solvent again, fully stirring makes hybrid reaction even, leaves standstill to get final product.
6. according to the described coating of one of claim 1-6, it is characterized in that described coating also comprises pigment or tinting material; Described pigment or tinting material are the mixture of a kind of in pigment dyestuff, dyestuff, transparent ferric oxide, pearly pigment, polygonal effect pigment or the metallic pigment or at least two kinds.
7. according to the described coating of one of claim 1-6, it is characterized in that said coating also comprises solidifying agent; Described solidifying agent is the mixture of a kind of in XA 1007, carbodiimide or the trimeric cyanamide or at least two kinds.
8. the preparation method of an antibacterial waterborne paint is characterized in that, may further comprise the steps:
A, at first prepare nano silver antimicrobials;
B, with deionized water, antiseptic-germicide, wetting agent, dispersion agent, skimmer mixing and stirring, add nano material, obtain aqueous dispersion after being uniformly dispersed;
C, the aqueous dispersion that obtains step B add in the emulsion or aqueous resin dispersion that stirs, and add sticking power resin or softening agent, wetting agent, flow agent, thickening material, anti-settling agent again, pH regulator agent dispersed with stirring is even;
C, adding pigment or tinting material;
D, moisturizing make antibacterial waterborne paint.
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Application publication date: 20121003 |