CN105176216A - Diatom ooze coating and preparation method thereof - Google Patents
Diatom ooze coating and preparation method thereof Download PDFInfo
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Abstract
The invention provides a diatom ooze coating, belonging to the technical field of decoration coatings. Components of the diatom ooze coating mainly comprise synthesized emulsion, a dispersant, kieselguhr, a filler, a silver ion antibacterial agent, an additive and water and the like. The aperture of the selected kieselguhr is 280-580 meshes, and a micropore structure of the kieselguhr can be kept, and actions of humidifying and absorbing and dissolving formaldehyde can be achieved. The content of emulsion is reduced, and the strength of the coating after a wall is coated is ensured, and powder falling is avoided, and kieselguhr particles are not fully wrapped due to a formed membrane thus the micropores are not blocked, so that the functionality is not affected. The silver ion antibacterial agent is added into the coating, so the growth and propagation of microorganisms are effectively inhibited. The diatom ooze coating is obtained in a manner of charging materials in batches and stirring. Before the emulsion is added, under stirring, a thickener and a pH regulator are added, and the thickener can be fully dissolved by a shearing action, and an advanced dissolving step for the thickener is reduced.
Description
Technical field
The present invention relates to decorative paint technical field, in particular to a kind of diatom ooze coating and preparation method thereof.
Background technology
Diatom ooze take diatomite as the green inner wall decoration wall material of main raw material(s), has to eliminate formaldehyde, purify air, regulate the functions such as humidity, fire protection flame retarding, deodorization and sterilization.Due to diatom ooze health environment-friendly, not only have ornamental very well, also have functional, be the house decorative material of new generation of alternative wallpaper and emulsion paint, the scope of application is very extensive.Following place can be useful in: family's (parlor, bedroom, study, infant room, smallpox etc. metope), apartment, kindergarten, nursing homes, hospital, sanatorium, club, theme social hall, high-grade restaurant, Resort Hotel, office building, style dining room etc.Current diatom ooze product, mostly is Powdered trowelling product, and construction is comparatively complicated.
Interiro wall latex paint has that easy construction, color selecting are abundant, surface smoothing, be easy to the features such as maintenance.But easy swelling and cracking when its poor air permeability causes body of wall internal wetted under high humidity environment.
Using diatomite as major function filler, make the liquid diatom ooze coating product of similar emulsion paint, keeping functional while, make its easy construction, overcome the deficiency of trowelling product.Diatom ooze itself without any pollution, and having several functions, is that the traditional decoration such as emulsion paint and wallpaper material is incomparable.
Liquid diatom ooze coating is in order to pursue the smooth effect identical with emulsion paint, the diatomite particle diameter selected is very little, with the addition of a large amount of emulsions and film coalescence aid, the film that emulsion solidifies rear formation is easy to the diatomaceous hole of closed small particle size simultaneously, affects its damping and absorbs the functions such as decomposing formaldehyde.Such as: it is 600 order-1000 orders that a kind of ventilative damping interior wall diatom emulsion paint and preparation method thereof (CN103709870A) defines diatomite granularity.In addition, usually need pressed powder thickening material to dissolve in advance, then join in coating, this can increase the link that products production manufactures.
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 diatom ooze coating, and described diatom ooze coating can retain the microvoid structure of diatomite self, plays the effect of damping and absorption decomposing formaldehyde; Described diatom ooze coating ensure that the intensity on coating after wall, i.e. not dry linting, is unlikely to again, because the film formed wraps up diatomite particle completely, to block its micropore, affect functional.
The second object of the present invention is the preparation method providing a kind of described diatom ooze coating, the method is before adding emulsion, under the state stirred, add thickening material and pH adjusting agent, shearing action can make thickening material dissolve completely, and decrease thickening material and dissolve link in advance, technique is simple, prepared diatom ooze coating excellent performance, is suitable for scale operation.
In order to realize above-mentioned purpose of the present invention, spy by the following technical solutions:
A kind of diatom ooze coating, described diatom ooze coating mainly comprises the composition of following massfraction:
Synthetic emulsion 5%-25%, dispersion agent 0.1%-3%, diatomite 10%-35%, filler 0-35%, silver ion antimicrobial agent 0.01%-1%, auxiliary agent 0-3%, surplus are water.
Diatom ooze coating of the present invention can retain the microvoid structure of diatomite self, fully plays the function of damping and absorption decomposing formaldehyde; Present invention reduces the content of emulsion, after coating drying, latex particle is distributed in around diatomite and filler particles, play cohesive action, both ensure that the intensity on coating after wall, be i.e. not dry linting, be unlikely to again, because the film formed wraps up diatomite particle completely, to block its micropore, affect functional.
Silver ion antimicrobial agent has the features such as security is high, has a broad antifungal spectrum, has been widely used in the every profession and trade such as weaving face fabric, medical material, can have effectively suppressed microorganism growth, breeding.The present invention with the addition of silver ion antimicrobial agent in coating.The chemical structure of silver determines silver and has higher catalytic capability, and the reduction potential of high oxidation state silver is high, is enough to make its surrounding space produce atomic oxygen.Atomic oxygen has strong oxidizing property can sterilizing, and silver ions can attract the sulfydryl (-SH) in bacterial body on proteolytic enzyme consumingly, rapidly together with it, makes proteolytic enzyme loss of activity, causes bacterial death.After bacterium is killed by silver ions, silver ions dissociates out by bacterium corpse again, then contacts with other bacterium colony, and carry out said process again and again, this is also the persistent reason of silver-colored sterilization
Described diatom ooze coating preferably mainly comprise the composition of following massfraction:
Synthetic emulsion 5%-15%, dispersion agent 0.3%-2%, diatomite 20%-30%, filler 10%-25%, silver ion antimicrobial agent 0.01%-0.7%, auxiliary agent 0.5%-2%, surplus are water.
Described diatom ooze coating preferably mainly comprise the composition of following massfraction further:
Synthetic emulsion 10%, dispersion agent 0.8%, diatomite 24%, filler 22%, silver ion antimicrobial agent 0.2%, auxiliary agent 1.5%, surplus are water.
Described synthetic emulsion is low VOC (volatile organic compounds) water-based emulsion, and in described water-based emulsion, latex particle size is 0.5 μm-10 μm, makes diatom ooze coating of the present invention have good film-forming properties, not dry linting after upper wall.
Described synthetic emulsion be preferably in pure-acrylic emulsion, benzene emulsion, organosilicon crylic acid latex, acrylate and vinyl acetate emulsion, vac-veova emulsion one or more.
Described dispersion agent is one or more in polyacrylate, polycarboxylate, polyphosphoric acid salt, but should avoid using ammonium salt dispersion agent, ammonium salt dispersion agent constantly can decomposite ammonia in the preparation and use procedure of diatom ooze coating, has irritating smell, is not suitable for inner wall decoration.
Described diatomite is 280-580 order diatomite.Described diatomaceous whiteness is preferably not less than 85%.The present invention selects 280-580 order diatomite, can retain the microvoid structure of diatomite self, fully plays the function of damping and absorption decomposing formaldehyde.
Described filler is one or more in water-ground limestone, light calcium carbonate, talcum powder, titanium dioxide, wollastonite powder.Described filler can improve the opacifying power of coating, improves the denseness of coating, weather resistance, perviousness, scrub resistance, stain resistance and gloss retention etc.
Described auxiliary agent is one or more in the water-borne coatings common agents such as film coalescence aid (as alcohol ester-12), thickening material (as cellulose thickener), wetting agent, defoamer (as BYK-052), pH value regulator (as NaOH, ammoniacal liquor, multifunctional regulator etc.), mould inhibitor, sanitas, frostproofer (as ethylene glycol, propylene glycol etc.).
Above-mentioned all raw materials all can adopt commercially available buying pattern to obtain.
The preparation method of above-mentioned diatom ooze coating, comprises the steps:
First deionized water is added in proportion in stirred pot, add dispersion agent, pigment, diatomite and filler while stirring, after dispersed with stirring is even, add thickening material and pH adjusting agent while stirring, after dispersed with stirring is even, add synthetic emulsion, mould inhibitor, sanitas, frostproofer, defoamer and silver ion antimicrobial agent while stirring, be stirred to and be uniformly dispersed, obtained described diatom ooze coating.
Usually need pressed powder thickening material to dissolve in advance, then join in coating, add the link that products production manufactures.The inventive method is before adding emulsion, under the state stirred, can directly add thickening material powder and pH adjusting agent, shearing action can make thickening material dissolve completely, play thickening effectiveness, decrease thickening material and dissolve link in advance, technique is simple, prepared diatom ooze coating excellent performance, is suitable for scale operation.
Compared with prior art, beneficial effect of the present invention is:
The diatomite particle diameter that the present invention selects is 280-580 order, can retain the microvoid structure of diatomite self, plays the effect of damping and absorption decomposing formaldehyde.Present invention reduces the content of emulsion, both ensure that the intensity on coating after wall, be i.e. not dry linting, be unlikely to again, because the film formed wraps up diatomite particle completely, to block its micropore, affect functional.The present invention with the addition of silver ion antimicrobial agent in coating, effectively suppresses microorganism growth and breeding.In the present invention, before adding emulsion, under the state stirred, add thickening material and pH adjusting agent, shearing action can make thickening material dissolve completely, decreases thickening material and dissolves link in advance.
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
A kind of diatom ooze coating, described diatom ooze coating mainly comprises the composition of following massfraction:
Synthetic emulsion 5%, dispersion agent 0.1%, diatomite 10%, silver ion antimicrobial agent 0.01%, surplus are water.
The preparation method of described diatom ooze coating is as follows:
In stirred pot, first add deionized water in proportion, add dispersion agent and diatomite while stirring, after dispersed with stirring is even, adds synthetic emulsion and silver ion antimicrobial agent while stirring, be stirred to and be uniformly dispersed, obtained described diatom ooze coating.
Described synthetic emulsion is benzene emulsion;
Described dispersion agent is polyacrylic acid potassium;
Described diatomite is 280-580 order diatomite.
Embodiment 2
A kind of diatom ooze coating, described diatom ooze coating mainly comprises the composition of following massfraction:
Synthetic emulsion 25%, dispersion agent 3%, diatomite 35%, filler 10%, silver ion antimicrobial agent 1%, auxiliary agent 3%, surplus are water.
The preparation method of described diatom ooze coating is as follows:
First deionized water is added in proportion in stirred pot, add dispersion agent, pigment, diatomite and filler while stirring, after dispersed with stirring is even, add thickening material while stirring, after dispersed with stirring is even, add synthetic emulsion and silver ion antimicrobial agent while stirring, be stirred to and be uniformly dispersed, obtained described diatom ooze coating.
Described synthetic emulsion is organosilicon crylic acid latex;
Described dispersion agent is poly carboxylic acid sodium;
Described diatomite is 300-400 order diatomite.
Described filler is water-ground limestone;
Described auxiliary agent is alcohol ester-12 film coalescence aid.
Embodiment 3
A kind of diatom ooze coating, described diatom ooze coating mainly comprises the composition of following massfraction:
Synthetic emulsion 5%, dispersion agent 0.3%, diatomite 20%, filler 30%, silver ion antimicrobial agent 0.01%, auxiliary agent 0.5%, surplus are water.
The preparation method of described diatom ooze coating is as follows:
First deionized water is added in proportion in stirred pot, add dispersion agent, pigment, diatomite and filler while stirring, after dispersed with stirring is even, add thickening material while stirring, after dispersed with stirring is even, add synthetic emulsion and silver ion antimicrobial agent while stirring, be stirred to and be uniformly dispersed, obtained described diatom ooze coating.
Described synthetic emulsion is acrylate and vinyl acetate emulsion;
Described dispersion agent is sodium polyphosphate;
Described diatomite is 400-450 order diatomite.
Described filler is light calcium carbonate;
Described auxiliary agent is methylcellulose thickener.
Embodiment 4
A kind of diatom ooze coating, described diatom ooze coating mainly comprises the composition of following massfraction:
Synthetic emulsion 15%, dispersion agent 2%, diatomite 30%, filler 25%, silver ion antimicrobial agent 0.7%, auxiliary agent 2%, surplus are water.
The preparation method of described diatom ooze coating is as follows:
First deionized water is added in proportion in stirred pot, add dispersion agent, pigment, diatomite and filler while stirring, after dispersed with stirring is even, add thickening material while stirring, after dispersed with stirring is even, add synthetic emulsion and silver ion antimicrobial agent while stirring, be stirred to and be uniformly dispersed, obtained described diatom ooze coating.
Described synthetic emulsion is vac-veova emulsion;
Described dispersion agent is potassium polyphosphate;
Described diatomite is 450-500 order diatomite.
Described filler is light calcium carbonate;
Described auxiliary agent is Vltra tears thickening material.
Embodiment 5
A kind of diatom ooze coating, described diatom ooze coating mainly comprises the composition of following massfraction:
Synthetic emulsion 10%, dispersion agent 0.8%, diatomite 24%, filler 22%, silver ion antimicrobial agent 0.2%, auxiliary agent 1.5%, surplus are water.
The preparation method of described diatom ooze coating is as follows:
First deionized water is added in proportion in stirred pot, add dispersion agent, pigment, diatomite and filler while stirring, after dispersed with stirring is even, add thickening material while stirring, after dispersed with stirring is even, add synthetic emulsion and silver ion antimicrobial agent while stirring, be stirred to and be uniformly dispersed, obtained described diatom ooze coating.
Described synthetic emulsion is pure-acrylic emulsion;
Described dispersion agent is sodium polyacrylate;
Described diatomite is 500-550 order diatomite.
Described filler is wollastonite powder;
Described auxiliary agent is propandiol butyl ether film coalescence aid.
Test example 1
Detect embodiment 1-5 diatom ooze coating and comparative example 1 to breathe freely the humidity of damping interior wall diatom emulsion paint, wherein comparative example 1 be the ventilative damping interior wall diatom emulsion paint that the technical scheme of employing patent CN201310751705.2 embodiment 1 prepares.
Sample making: damping interior wall diatom emulsion paint of embodiment of the present invention 1-5 diatom ooze coating and comparative example 1 being breathed freely is respectively according to 1kg/m
2brushing amount, evenly brushing is on the sheet glass of three pieces of 250mm × 250mm at twice, and thicknesses of layers 0.8mm, places under natural condition and dry for 7 days.
Humidity detects the method specified according to JC/T2082-2011 " humidity conditioning function interior architecture finishing material " and performs.Test result is as shown in the table:
Table 1 diatom ooze coating humidity detected result
JC/T2082-2011 " humidity conditioning function interior architecture finishing material " specifies: the requirement that the material of construction that coat-thickness is less than 1mm has humidity conditioning function is 3h moisture uptake>=10kg/m
2; 6h moisture uptake>=15kg/m
2; 12h moisture uptake>=20kg/m
2; 12h moisture releasing amount>=70%12h moisture uptake.Humidity test result shows, and embodiment of the present invention 1-5 all reaches the humidity index of JC/T2082-2011; In addition, compare documents 1, the humidity of diatom ooze coating of the present invention significantly improves, and this illustrates in diatom ooze coating of the present invention, and the diatomite used can retain self microvoid structure, plays damping effect more fully.
To breathe freely according to JC/T1074-2008 " function of purifying indoor air coating material purifying property " testing example 1-5 and comparative example 1 formaldehyde adsorption property of damping interior wall diatom emulsion paint, wherein comparative example 1 is the ventilative damping interior wall diatom emulsion paint adopting the technical scheme of patent CN201310751705.2 embodiment 1 to prepare, and test result is as shown in the table:
Table 2 diatom ooze coating formaldehyde adsorption property detected result
| Diatom ooze coating | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Comparative example 1 |
| Purification rate % | 95.7 | 95.3 | 96.6 | 97.4 | 97.8 | 94.6 |
Regulation according to JC/T1074-2008 " function of purifying indoor air coating material purifying property ": the coating material with decoration functions, purifying formaldehyde performance >=75%, then this product has purifying property, can the obnoxious flavour such as active adsorption formaldehyde.As can be seen from test result, embodiment of the present invention 1-5 diatom ooze coating all meets the regulation of JC/T1074-2008, and significantly improve relative to the breathe freely formaldehyde adsorption property of damping interior wall diatom emulsion paint of documents 1, this illustrates in diatom ooze coating of the present invention, the diatomite used can retain self microvoid structure, plays the effect absorbing decomposing formaldehyde more fully.
In addition, the present invention with the addition of silver ion antimicrobial agent in diatom coating, after testing, the antibacterium performance of embodiment of the present invention 1-5 diatom ooze coating and antibacterium endurance quality all reach 0 grade (detecting with bacterium: intestinal bacteria and staphylococcus aureus) specifying in HG/T3590-2007 " antibiotic paint " standard.
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 diatom ooze coating, is characterized in that, described diatom ooze coating mainly comprises the composition of following massfraction:
Synthetic emulsion 5%-25%, dispersion agent 0.1%-3%, diatomite 10%-35%, filler 0-35%, silver ion antimicrobial agent 0.01%-1%, auxiliary agent 0-3%, surplus are water.
2. a kind of diatom ooze coating according to claim 1, is characterized in that, described diatom ooze coating mainly comprises the composition of following massfraction:
Synthetic emulsion 5%-15%, dispersion agent 0.3%-2%, diatomite 20%-30%, filler 10%-25%, silver ion antimicrobial agent 0.01%-0.7%, auxiliary agent 0.5%-2%, surplus are water.
3. a kind of diatom ooze coating according to claim 1, is characterized in that, described diatom ooze coating mainly comprises the composition of following massfraction:
Synthetic emulsion 10%, dispersion agent 0.8%, diatomite 24%, filler 22%, silver ion antimicrobial agent 0.2%, auxiliary agent 1.5%, surplus are water.
4. a kind of diatom ooze coating according to claim 1, is characterized in that, described synthetic emulsion is water-based emulsion, and in described water-based emulsion, latex particle size is 0.5 μm-10 μm.
5. a kind of diatom ooze coating according to claim 4, is characterized in that, described synthetic emulsion is one or more in pure-acrylic emulsion, benzene emulsion, organosilicon crylic acid latex, acrylate and vinyl acetate emulsion, vac-veova emulsion.
6. a kind of diatom ooze coating according to claim 1, is characterized in that, described dispersion agent is one or more in polyacrylate, polycarboxylate, polyphosphoric acid salt.
7. a kind of diatom ooze coating according to claim 1, is characterized in that, described diatomite is 280-580 order diatomite.
8. a kind of diatom ooze coating according to claim 1, is characterized in that, described filler is one or more in water-ground limestone, light calcium carbonate, talcum powder, titanium dioxide, wollastonite powder.
9. a kind of diatom ooze coating according to claim 1, is characterized in that, described auxiliary agent is one or more in film coalescence aid, thickening material, wetting agent, defoamer, pH value regulator, mould inhibitor, sanitas, frostproofer.
10. the preparation method of a kind of diatom ooze coating as described in as arbitrary in claim 1-9, is characterized in that, comprise the steps:
First deionized water is added in proportion in stirred pot, add dispersion agent, pigment, diatomite and filler while stirring, after dispersed with stirring is even, add thickening material and pH adjusting agent while stirring, after dispersed with stirring is even, add synthetic emulsion, auxiliary agent and silver ion antimicrobial agent while stirring, be stirred to and be uniformly dispersed, obtained described diatom ooze coating.
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