CN102212300B - Anti-fouling varnish for waterborne wall surface and preparation method thereof - Google Patents
Anti-fouling varnish for waterborne wall surface and preparation method thereof Download PDFInfo
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- CN102212300B CN102212300B CN 201010526380 CN201010526380A CN102212300B CN 102212300 B CN102212300 B CN 102212300B CN 201010526380 CN201010526380 CN 201010526380 CN 201010526380 A CN201010526380 A CN 201010526380A CN 102212300 B CN102212300 B CN 102212300B
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Abstract
The invention provides an anti-fouling varnish for a waterborne wall surface and a preparation method thereof. The varnish mainly comprises the following compositions by weight: 50 to 60 parts by weight of film-forming material, 20 to 30 parts by weight of elastic microsphere, 1.0 to 2.0 parts by weight of cosolvent, 1.0 to 2.0 parts by weight of film-forming additive, 2.0 to 3.0 parts by weight of coating additive, and an acceptable amount of water, wherein the film-forming material is an acrylic acid copolymer emulsion which has the particle size distribution of 200 to 250nm, the glass transition temperature of 17 to 20 DEG C and the minimum film-forming temperature (MFFT) of 8 to 10 DEG C; and the elastic microsphere has the particle size of 20 to 150mum and the density of 30+/-2kg/mg.
Description
Background technology
The present invention relates to a kind of synthetic resin coating and preparation method thereof, relating to a kind of in particular is the antifouling varnish of water-based metope and preparation method thereof of main film forming substance by acrylic resin.
Technical field
Coating is a kind of easy construction, cheap, effect is obvious, value-added rates is high Chemicals.The surface that it not only has the building of making, boats and ships, machinery etc. prevents corrosion, the function that increases the service life, also have decorative environment to give beautiful enjoyment or the function of eye-catching mark, along with the continuous development of science and technology, coating progressively becomes the strong fine chemistry product of a kind of specificity.
It is contaminated in various degree that As time goes on metope appears in coating for internal and external wall easily; Mill is spent, is come off; Metope fades, wears, and influences the appearance of the city.
Traditional interior exterior wall anti-soil product decontamination cleaning way: 1. clean with a large amount of washing composition.2. need to use hard hairbrush outwash back and forth.
The shortcoming that the inside and outside exterior wall anti-soil product decontamination of tradition is cleaned is: 1, use a large amount of washing composition, and big to water environment pollution; 2, use cleaning means such as brush that metope is scrubbed and the metope of top grade can be wiped flower, the surface coarse injustice that becomes; Produce local speck, coating surface is inconsistent.
Anti-soil is the main demand (or attraction) of interior wall coating always; but the stain resistance of general interior wall product is not very strong; a lot of spots are not to be easy to wipe out, and can occur usually paint film by wiping shedding or paint film by the not only light but also bright of wiping, be very easy to find and cleaned.This mainly is because general interior wall product paint film is fine and close inadequately, make paint film be subject to spot pollute infiltrate and not easy cleaning wipe, the hardness of adding interior wall product paint film is not high, formula for a product PVC (pigment volume concentration (PVC)) is too high and paint film requires due to the mute light effect.
In sum, this area lacks the strong antifouling varnish of water-based metope of a kind of stain resistance.
Summary of the invention
First purpose of the present invention is to obtain the strong antifouling varnish of water-based metope of stain resistance.
Second purpose of the present invention is to obtain the preparation method of the strong antifouling varnish of water-based metope of a kind of stain resistance.
First aspect present invention provides a kind of water-based metope antifouling varnish, and described varnish mainly is made up of following components by weight percent:
Filmogen 50～60 weight parts; Described filmogen be emulsion particle diameter be distributed as 200～250nm, second-order transition temperature Tg between 17～20 ℃, the acrylic copolymer emulsion of minimum film-forming temperature MFFT between 8～10 ℃;
Elastic microsphere 20-30 weight part; The grain size of described elastic microsphere is 20～150um, and density is 30 ± 2kg/m
3
Solubility promoter 1.0～2.0 weight parts;
Film coalescence aid 1.0～2.0 weight parts;
Coatings additive(s) 2.0～3.0 weight parts;
But and the water of receiving amount.
In a preference, described filmogen is the acrylic copolymer emulsion; Its physical and chemical index has emulsion particle diameter to be distributed as 200～250nm, median size 215nm, the solid constituent between 45～50%, residual monomer≤100ppm, TVOCs≤100ppm, second-order transition temperature Tg is between 17～20 ℃, and minimum film-forming temperature MFFT is between 8～10 ℃.
More preferably, described filmogen is the acrylic copolymer emulsion of the commodity AB-100 by name of DOW Chemical; Be clear state after said composition self film forming, do not have any opacifying power, can not directly use as coating material, need to brush use behind the various auxiliary agents of collocation.
Described elastic microsphere is the commercially available prod, is the gas composition that is wrapped in by a kind of housing of polymkeric substance and it.When heating, the thermoplasticity housing is softening, and the gas expansion of housing the inside forms elastic microsphere.
In an embodiment, described solubility promoter is the glycols solubility promoter.
Described film coalescence aid is the alkoxide solvent.
Described coatings additive(s) is selected from defoamer, thickening material, pH regulator agent, mould inhibitor, sanitas or its combination.
In an embodiment, the part by weight of described solubility promoter, film coalescence aid and coatings additive(s) is: defoamer: thickening material: pH regulator agent: mould inhibitor: sanitas=(0.3 ± 0.1): (1.2 ± 0.1): (0.2 ± 0.05): (0.4 ± 0.1): (0.15 ± 0.05).
In an embodiment,
Described defoamer is silicone based defoamer and mineral oil defoaming agent or its combination;
Described thickening material is polyurethanes rheology control agent, cellulose thickener or its combination;
Described pH regulator agent is organic alcohol amine.
In a preference, described defoamer is the use of arranging in pairs or groups of silicone based defoamer and mineral oil defoaming agent, to guarantee to provide permanent froth breaking stability fast
In a preference, described thickening material is polyurethanes rheology control agent (solid content is 20%, and is colourless translucent, presents similar Newtonian liquid figure) or cellulose thickener (pure-natural biological stable form Mierocrystalline cellulose; Said composition is the commercially available prod of Aqulon, trade(brand)name Natursol 250HBR).
A second aspect of the present invention provides a kind of preparation method of varnish of the present invention, and it comprises the steps:
(i) provide following component:
Filmogen 50～60 weight parts; Described filmogen is the pure acrylic acid copolymer emulsion;
Elastic microsphere 20～30 weight parts; Described elastic microsphere is the synthetic plastic rubber material of aliphatic polyurethane;
Solubility promoter 1.0～2.0 weight parts;
Film coalescence aid 1.0～2.0 weight parts;
Coatings additive(s) 2.0～3.0 weight parts;
(ii) with step (i) but component in the water of receiving amount, disperse, obtain described varnish.
In an embodiment, when described step when (ii) the component of described coatings additive(s) is selected from defoamer, thickening material, pH regulator agent, mould inhibitor, sanitas or its combination, this method is made up of following steps:
A) water is put into dispersion tank, rotating speed is controlled at 600～800 rev/mins;
B) adding filmogen then stirred 5 ± 2 minutes;
C) elastic microsphere is added, stirred 5 ± 2 minutes;
D) defoamer, thickening material are added successively disperse 15 ± 5 minutes in the dispersion tank;
E) adding the part pure water then mediates;
F) add solubility promoter and film coalescence aid then, stirred 5 ± 2 minutes;
G) add mould inhibitor and sanitas then successively, stirred 3 ± 1 minutes;
H) add the pH regulator agent then, reach the pH value that needs;
I) add mould inhibitor, sanitas dispersion 2 ± 1 minutes then successively;
J) add water at last and be adjusted to required viscosity, obtain described varnish.
Embodiment
The inventor by improving preparation technology, has obtained the strong antifouling varnish of kind water-based metope of stain resistance through extensive and deep research.Finished the present invention on this basis.
Below describe in detail to various aspects of the present invention, specify as nothing, various raw materials of the present invention all can obtain by commercially available; Or prepare according to the ordinary method of this area.Unless otherwise defined or explanation, same meanings of being familiar with of all specialties used herein and scientific words and those skilled in the art.Any method similar or impartial to described content and material all can be applicable in the inventive method in addition.
The invention provides the antifouling varnish of a kind of water-based metope, described varnish mainly is made up of following components by weight percent:
Filmogen 50～60 weight parts; Described filmogen be emulsion particle diameter be distributed as 200～250nm, second-order transition temperature Tg between 17～20 ℃, the acrylic copolymer emulsion of minimum film-forming temperature MFFT between 8～10 ℃;
Elastic microsphere 20-30 weight part; The grain size of described elastic microsphere is 20～150um, and density is 30 ± 2kg/m
3
Solubility promoter 1.0～2.0 weight parts;
Film coalescence aid 1.0～2.0 weight parts;
Coatings additive(s) 2.0～3.0 weight parts;
But and the water of receiving amount.
The present invention is the technical solution problem, select a kind of ACRYLIC EMULSION to the certain removal ability of having of water-based spot, cooperate the use of elastic microsphere, develop the antifouling varnish of water-based metope with mute light effect, it mainly is made up of filmogen, elastic microsphere, solubility promoter, film coalescence aid, coatings additive(s) and water.Its characteristics are that filmogen is specific physical parameter ACRYLIC EMULSION, this synthetic emulsion possesses certain pigment volume concentration (PVC), therefore possesses certain stain resistance, and the elastic microsphere of arranging in pairs or groups and selecting for use, adopt the design of multilayered structure, the rubbery state domain structure that elastic microsphere is evenly distributed is filmed product and is had the elasticity of rubber, produces the sense of touch as leather.This design simultaneously has very big dispersion effect to light, make clear finish produce mute light effect, this multilayered structure design forms interpenetrative reticulated structure, strengthened the stability of emulsion film internal stress and water-fast erosion very closely, thereby nationality is given migration and the infiltration that paint film can effectively stop spot with the internal stress closely of filming and has been solved the more weak stain resistance of emulsion paint paint film; Need not to add other anti-soil promotor (such as the plain auxiliary agent of fluorine, water-based wax emulsion etc.) in the prescription.
Simultaneously, finishing varnish can produce the higher paint film effect of gloss usually, and is far from each other with the traditional coating construction effect; Domestic coating application effect is pursued mute light effect usually, for this reason, in deisgn product, this problem is also taken into account, another main purpose of selecting elastic microsphere is exactly to solve the high problem of cover gloss, the elastic microsphere of certain consumption because the emulsion amount of using is arranged in pairs or groups, adopt the design of multilayered structure, this design has very big dispersion effect to light, makes clear finish produce mute light effect.
Therefore, the addition of elastic microsphere is respectively in the addition of modified acrylic acid emulsion and the prescription: 50-60%, 20-30%.
The weight proportion of composing of the coatings additive(s) of the antifouling varnish of this metope is:
Table 1 shown in detail respectively form in the antifouling varnish of metope raw-material title, specifically the effect and weight percent
Table 1
Filmogen
In a preference, described filmogen is the acrylic copolymer emulsion; Its physical and chemical index has emulsion particle diameter to be distributed as 200～250nm, median size 215 ± 5nm, the solid constituent between 45～50%, residual monomer≤100ppm, TVOCs≤100ppm, second-order transition temperature Tg is between 17～20 ℃, and minimum film-forming temperature MFFT is between 8～10 ℃.
More preferably, described filmogen is the acrylic copolymer emulsion of the commodity AB-100 by name of DOW Chemical; Be clear state after said composition self film forming, do not have any opacifying power, can not directly use as coating material, need to brush use behind the various auxiliary agents of collocation.
Elastic microsphere
Described elastic microsphere is the commercially available prod, is the gas composition that is wrapped in by a kind of housing of polymkeric substance and it.When heating, the thermoplasticity housing is softening, and the gas expansion of housing the inside forms elastic microsphere.
Possess certain stain resistance at filmogen self, adopt the design of multilayered structure again with the elastic microsphere of selecting for use, the rubbery state domain structure that it is evenly distributed is filmed product and is had the elasticity of rubber, produces the sense of touch as leather.This design simultaneously has very big dispersion effect to light, the multilayered structure design forms interpenetrative reticulated structure, strengthen the stability of its internal stress and water-fast erosion very closely, thereby and make the stress nationality give migration and the infiltration that paint film can effectively stop spot with internal stress closely to have solved the more weak stain resistance of emulsion paint paint film; Need not to add other anti-soil promotor (such as the plain auxiliary agent of fluorine, water-based wax emulsion etc.) in the prescription.Wherein the addition of elastic microsphere is respectively in the addition of pure acrylic acid emulsion and the prescription: 50-60: 20-30 (weight part).
Solubility promoter
Solubility promoter of the present invention is not specifically limited, and can adopt the commercially available various solubility promoters that are applicable to acrylic coating, and this is known for those skilled in the art.Usually solubility promoter has propylene glycol, ethylene glycol and glycol ethers.
In an embodiment, described solubility promoter is the glycols solubility promoter.
Film coalescence aid
Film coalescence aid of the present invention is not specifically limited, and can adopt the commercially available various auxiliary agents that are applicable to acrylic coating, and this is known for those skilled in the art.
In an embodiment, described film coalescence aid is the alkoxide solvent.
Coatings additive(s)
Described coatings additive(s) is selected from defoamer, thickening material, pH regulator agent, mould inhibitor, sanitas or its combination.Can also contain the suitable dispersion agents of other ACRYLIC EMULSION such as dispersion agent.
Defoamer
Employed emulsion in the emulsion paint, the dispersion agent defoamer, thickening material, raw materials such as sterilant all contain tensio-active agent.Therefore very easily produce foam.Foam has hindered the dispersion of color stuffing, has reduced usage ratio of equipment, has prolonged the production cycle, and more seriously give to film and brought many defectives, as shrinkage cavity, pin hole etc.It is generally acknowledged that froth breaking can be divided into following four processes: 1, defoamer is adsorbed onto the surface of foam; 2, defoamer is penetrated into the surface of foam; 3, defoamer spreads at foam surface, and the adsorption surface promoting agent; 4, foam tension imbalance-broken bubble.Should have following characteristic according to this mechanism defoamer: 1, the surface tension of defoamer is less than the surface tension that needs froth breaking liquid self; 2, the solubleness in needing the liquid of froth breaking is as far as possible little; 3, good dispersiveness to be arranged.4, can not react with the liquid of want froth breaking, can not influence the force of cohesion of pigment in the coating and the stability of emulsion.5, stronger diffusive force to be arranged.6, can not influence the performance of finished product emulsion paint.7, unpleasant odor can not be arranged.
Particularly, described defoamer is silicone based defoamer, mineral oil defoaming agent or its combination.
In a preference, described defoamer is the use of arranging in pairs or groups of silicone based defoamer and mineral oil defoaming agent, to guarantee to provide permanent froth breaking stability fast.
Thickening material
The coating thickener kind is a lot, mainly contains cellulose family, polyacrylic ester and non-ionic associative type polyurethane thickening material and inorganic thickening agent four classes.
Cellulose thickener has methylcellulose gum, carboxymethyl cellulose, Natvosol, Vltra tears etc., and wherein the most frequently used is Natvosol.The thickening mechanism of cellulose thickener cellulose thickener is that hydrophobic main chain and ambient water molecule pass through hydrogen bond association, has improved the fluid volume of polymkeric substance itself, has reduced the free movable space of particle, thereby has improved the system viscosity.Also can realize the raising of viscosity by the winding of molecular chain, showing as static and low the shearing has high viscosity, is low-viscosity under high-shear.This is that cellulose molecular chain is in state of disarray and makes system present high viscosity because when static state or low shearing speed; And when high shear rates, molecule parllel is made ordered arrangement in flow direction, is easy to mutual slip, so the system viscosity degradation.
Polyacrylate thickeners can be divided into two kinds basically: a kind of is water miscible polyacrylate; Another kind is homopolymer or the copolymer emulsion thickening material of vinylformic acid, methacrylic acid, and this thickening material itself is acid, must be neutralized to pH8～9 with alkali or ammoniacal liquor and just can reach thickening effectiveness, is also referred to as propylene soda acid swelling thickening material.Its thickening mechanism of polyacrylic thickening material is that thickening material is soluble in water, and by the same sex electrostatic repulsion of carboxylic acid ion, molecular chain is stretched to bar-shaped by spirrillum, thereby has improved the viscosity of water.It also forms reticulated structure by building bridge between emulsion particle and pigment in addition, has increased the viscosity of system.
The polyurethanes thickening material is in recent years non-ionic type associative thickener newly developed.The thickening mechanism of the association type polyurethanes of A.J.Reuvers thickening material has been done detailed research.Introduced hydrophilic radical and hydrophobic grouping in the molecular structure of this class thickening material, made it present the character of certain tensio-active agent.When its concentration of aqueous solution surpasses a certain certain concentration, form micella, micella and polymer particle associate and form reticulated structure, and the system viscosity is increased.Several micellas of branch subband have on the other hand reduced the transport property of water molecules, and the water viscosity is also improved.This class thickening material not only exerts an influence to the rheological of coating, and and adjacent latex particle between exist and interact, if this effect is too strong, cause the latex layering easily.
Inorganic thickening agent is a class water-swelling and form thixotropic gel mineral.Mainly contain wilkinite, attapulgite, pure aluminium silicate etc., wherein wilkinite is the most commonly used.The inorganic thickening agent wilkinite is a kind of layered silicate, and expanding and form flocculent substance in suction back, has good suspension and dispersiveness, is combined into colloid with an amount of water, can discharge charged corpuscle in water, increases the system viscosity.
Particularly, described thickening material is polyurethanes rheology control agent, cellulose thickener or its combination.
In a preference, described thickening material is polyurethanes rheology control agent (solid content is 20%, and is colourless translucent, presents similar Newtonian liquid figure), cellulose thickener (pure-natural biological stable form Mierocrystalline cellulose; Said composition is the commercially available prod of Aqulon, trade(brand)name Natursol 250HBR).
The pH regulator agent
Described pH regulator agent is not specifically limited, as long as can be so that the pH value of system is adjusted to desirable value.
Preferably, described pH regulator agent is the agent of organic alcohol amine pH regulator.
Mould inhibitor and sanitas
Mould inhibitor of the present invention and sanitas are not specifically limited, only otherwise goal of the invention of the present invention is produced restriction to get final product.
In a specific embodiment of the present invention, the mould inhibitor that adopts is benzoglyoxaline Urethylane, N '-(3,4-dichlorophenyl)-N, N-dimethyl urea or its combination.Water-soluble low, the good light stability of benzoglyoxaline Urethylane wherein, Heat stability is good, toxicity is low.And N '-(3,4-dichlorophenyl)-N, the N-dimethyl urea has good resistant function to algae substances.
In of the present invention-individual embodiment, the sanitas that adopts is 1,2-benzisothiazole-3-1 and derivative thereof.It is release formaldehyde not, and is not halogen-containing, non-volatile, and good stability has thermally-stabilisedly, and ph stability can use in pH value scope widely, and chemical stability is good, to had no corrosive effect on metals.
The consumption of mould inhibitor is 0～1 weight part, preferred 0.1～1 weight part, more preferably 0.4 ± 0.1 part.
The consumption of sanitas is 0～1 weight part, preferred 0.1～1 weight part, more preferably 0.15 ± 0.05 part.
Water
Herein, " but water of receiving amount " refers to that the consumption of described water is not specifically limited, as long as make varnish be diluted to required viscosity.
Varnish and preparation method thereof
A second aspect of the present invention provides a kind of preparation method of varnish of the present invention, and it comprises the steps:
(i) provide following component:
Filmogen 50-60 weight part; Described filmogen is the pure acrylic acid copolymer emulsion;
Elastic microsphere 20-30 weight part; Described elastic microsphere is the synthetic plastic rubber material of aliphatic polyurethane;
Solubility promoter 1.0-2.0 weight part;
Film coalescence aid 1.0-2.0 weight part;
Coatings additive(s) 2.0-3.0 weight part;
(ii) with step (i) but component in the water of receiving amount, disperse, obtain described varnish.
In an embodiment, when described step when (ii) the component of described coatings additive(s) is selected from defoamer, thickening material, pH regulator agent, mould inhibitor, sanitas or its combination, this method is made up of following steps:
A) water is put into dispersion tank, rotating speed is controlled at 600-800 rev/min;
B) adding filmogen then stirred 5 ± 2 minutes;
C) elastic microsphere is added, stirred 5 ± 2 minutes;
D) defoamer, thickening material are added successively disperse 15 ± 5 minutes in the dispersion tank;
E) adding the part pure water then mediates;
F) add solubility promoter and film coalescence aid then, stirred 5 ± 2 minutes;
G) add mould inhibitor and sanitas then successively, stirred 3 ± 1 minutes;
H) add the pH regulator agent then, reach the pH value that needs;
I) add mould inhibitor, sanitas dispersion 2 ± 1 minutes then successively;
J) add water at last and be adjusted to required viscosity, obtain described varnish.
Advantage of the present invention
1. the antifouling varnish product of water-based metope is the finishing varnish that adopts high-performance modified acrylic resin to make, the microcosmic spheroid that adds in formula for a product adopts the multilayered structure design, the rubbery state domain structure that it is evenly distributed, product is filmed have the elasticity of rubber, produce the sense of touch as leather.This design simultaneously has very big dispersion effect to light, the multilayered structure design forms interpenetrative reticulated structure, strengthen the stability of its internal stress and water-fast erosion very closely, thereby and make the stress nationality give migration and the infiltration that paint film can effectively stop spot with internal stress closely to have solved the more weak stain resistance of emulsion paint paint film.
2. the antifouling varnish product of water-based metope helps to improve the quality of interior wall coating product, the Application Areas that developing simultaneously makes new advances.High environmental protection requirement adds high-quality anti-soil characteristics, and it can better be the service of indoor decoration decoration market to make this product.
Other aspects of the present invention are because the disclosure of this paper is apparent to those skilled in the art.
Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiment only to be used for explanation the present invention and be not used in and limit the scope of the invention.The experimental technique of unreceipted actual conditions in the following example is measured according to national standard usually.If there is not a corresponding national standard, then carry out according to general international standard, normal condition or according to the condition that manufacturer advises.Unless otherwise indicated, otherwise all umbers are weight part, and all per-cents are weight percentage, and described polymericular weight is number-average molecular weight.
Unless otherwise defined or explanation, same meanings of being familiar with of all specialties used herein and scientific words and those skilled in the art.Any method similar or impartial to described content and material all can be applicable in the inventive method in addition.
Press following standard testing material property:
" exterior wall coating material of synthetic resin emulsion national standard (GB) GB/T9755-2001 ".
Embodiment 1～3
In following enforcement and Comparative Examples, the antifouling varnish of metope is investigated its water-fast, alkaline-resisting, sticking power
Embodiment
Be ready to prepare the starting material of product of the present invention according to the weight percent among table 1a～c.
At first water is put into dispersion tank, rotating speed is controlled at 600-800 rev/min; Adding filmogen then stirred 5 minutes; Elastic microsphere is slowly added, stirred 5 minutes; Defoamer, thickening material slowly added in the dispersion tank successively disperseed 15 minutes; Adding part water then lowers the temperature; Add solubility promoter and film coalescence aid then, stirred 5 minutes; Add mould inhibitor and sanitas then successively, stirred 3 minutes; Add the PH conditioning agent then; Add mould inhibitor, sanitas dispersion 2 minutes then successively; Add water at last and regulate viscosity to suitably, namely make finished product.
Product of the present invention is carried out water-fast, alkaline-resisting, sticking power, anti-contamination, performance test such as aging, and test result sees Table 2.
Table 2
| The Interventions Requested title | Unit | Technical requirements | Assay |
| Condition in container | / | No lump, being after the stirring all has state | Meet |
| Application property | / | It is accessible to brush two roads | Meet |
| Water tolerance | / | 96h is no abnormal | Meet |
| Alkali resistance | / | 48h is no abnormal | Meet |
| Abrasion resistance | Inferior | ≥2000 | By 3000 |
| Artificial ageing resistance | / | 500h is non-foaming, do not peel off, flawless | Meet |
| Efflorescence | Level | ≤1 | 0 |
| Variable color | Level | ≤2 | 0 |
| The coating temperature-change resistance | / | 5 circulations are no abnormal | Meet |
| Anti-contamination | ％ | 15％ | 5 |
| The lipstick test for contamination | / | 100% removes | By |
| Children's water-based Mark pen | Blue water-color paintbrush, 100% removes | By | |
| Sticking power | Level | ≤ 1 grade | 0 grade |
By above-mentioned table 2 pair product of the present invention carry out water-fast, alkaline-resisting, sticking power, anti-contamination, performance test data such as aging is said demonstration, the antifouling varnish performance excellence of water-based metope of the present invention; Anti-soil is effective, sticking power is a kind of novel anti-soil metope varnish that can use at interior wall face well.
The above only is preferred embodiment of the present invention, be not in order to limit essence technology contents scope of the present invention, essence technology contents of the present invention is broadly to be defined in the claim scope of application, any technology entity or method that other people finish, if it is defined identical with the claim scope of application, also or a kind of change of equivalence, all will be regarded as being covered by among this claim scope.
All quote in this application as a reference at all documents that the present invention mentions, just quoted as a reference separately as each piece document.Should be understood that in addition after having read foregoing of the present invention, those skilled in the art can make various changes or modifications the present invention, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
Claims (8)
1. antifouling varnish of water-based metope is characterized in that described varnish mainly is made up of following components by weight percent:
Filmogen 50～60 weight parts; Described filmogen is that emulsion particle diameter is distributed as 200～250nm, median size 215 ± 5nm, the solid constituent is between 45～50%, the surplus Dan Ti ≦ 100ppm of Can, TVOCs ≦ 100ppm, second-order transition temperature Tg between 17～20 ℃, the acrylic copolymer emulsion of minimum film-forming temperature MFFT between 8～10 ℃;
Elastic microsphere 20～30 weight parts; The grain size of described elastic microsphere is 20～150um, and density is 30 ± 2kg/m
3
Solubility promoter 1.0～2.0 weight parts;
Film coalescence aid 1.0～2.0 weight parts;
Coatings additive(s) 2.0～3.0 weight parts;
But and the water of receiving amount.
2. varnish as claimed in claim 1 is characterized in that, described solubility promoter is the glycols solubility promoter.
3. varnish as claimed in claim 1 is characterized in that, described film coalescence aid is the alkoxide solvent.
4. varnish as claimed in claim 1 is characterized in that, described coatings additive(s) is selected from defoamer, thickening material, pH regulator agent, mould inhibitor, sanitas or its combination.
5. varnish as claimed in claim 4 is characterized in that, in the described coatings additive(s), and defoamer: thickening material: pH regulator agent: mould inhibitor: sanitas=(0.3 ± 0.1): (1.2 ± 0.1): (0.2 ± 0.05): (0.4 ± 0.1): (0.15 ± 0.05).
6. varnish as claimed in claim 4 is characterized in that,
Described defoamer is silicone based defoamer, mineral oil defoaming agent or its combination;
Described thickening material is polyurethanes rheology control agent, cellulose thickener or its combination;
Described pH regulator agent is organic alcohol amine.
7. the preparation method of a varnish as claimed in claim 1 is characterized in that, comprises the steps:
(i) provide following component:
Filmogen 50-60 weight part; Described filmogen is that emulsion particle diameter is distributed as 200～250nm, median size 215 ± 5nm, the solid constituent is between 45～50%, the surplus Dan Ti ≦ 100ppm of Can, TVOCs ≦ 100ppm, second-order transition temperature Tg between 17～20 ℃, the acrylic copolymer emulsion of minimum film-forming temperature MFFT between 8～10 ℃;
Elastic microsphere 20-30 weight part; Described elastic microsphere is the synthetic plastic rubber material of aliphatic polyurethane; The grain size of described elastic microsphere is 20～150um, and density is 30 ± 2kg/m
3
Solubility promoter 1.0-2.0 weight part;
Film coalescence aid 1.0-2.0 weight part;
Coatings additive(s) 2.0-3.0 weight part;
(ii) with step (i) but component in the water of receiving amount, disperse, obtain described varnish.
8. method as claimed in claim 7 is characterized in that,
When described step when (ii) the component of described coatings additive(s) is selected from defoamer, thickening material, pH regulator agent, mould inhibitor, sanitas or its combination, this method is made up of following steps:
A) water is put into dispersion tank, rotating speed is controlled at 600-800 rev/min;
B) adding filmogen then stirred 5 ± 2 minutes;
C) elastic microsphere is added, stirred 5 ± 2 minutes;
D) defoamer, thickening material are added successively disperse 15 ± 5 minutes in the dispersion tank;
E) adding the part pure water then mediates;
F) add solubility promoter and film coalescence aid then, stirred 5 ± 2 minutes;
G) add mould inhibitor and sanitas then successively, stirred 3 ± 1 minutes;
H) add the pH regulator agent then, reach the pH value that needs;
I) add mould inhibitor, sanitas dispersion 2 ± 1 minutes then successively;
J) add water at last and be adjusted to required viscosity, obtain described varnish.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 201010526380 CN102212300B (en) | 2010-10-29 | 2010-10-29 | Anti-fouling varnish for waterborne wall surface and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN102690546A (en) * | 2012-06-11 | 2012-09-26 | 徐贵才 | Finish-coat paint production technology of water borne multicolor coatings |
| CN106032449B (en) * | 2015-03-17 | 2019-02-01 | 山西亮龙涂料有限公司 | A kind of dumb light finishing varnish and its preparation process |
| CN106147441B (en) | 2015-04-27 | 2019-07-05 | 广东华润涂料有限公司 | Resistance to soiling water-based paint compositions |
| CN106189399B (en) * | 2016-08-15 | 2018-08-31 | 吴江南玻玻璃有限公司 | A kind of high anti-pollution coating liquid and preparation method thereof |
| CN110066597B (en) * | 2017-10-17 | 2020-10-27 | 中国科学院宁波材料技术与工程研究所 | Special organic silicon hydrogel antifouling paint for fishing gear, and preparation method and application thereof |
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| CN1607229A (en) * | 2003-10-14 | 2005-04-20 | 深圳市海川实业股份有限公司 | Technology for producing external-wall latex paint capable of reproducing international color 1514 (green yellow) |
| CN101619184A (en) * | 2009-07-24 | 2010-01-06 | 中华制漆（深圳）有限公司 | Hand-feeling coating and preparation method thereof |
| CN101838493A (en) * | 2010-05-28 | 2010-09-22 | 中华制漆（深圳）有限公司 | Heat-insulating coating for inner wall |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1607229A (en) * | 2003-10-14 | 2005-04-20 | 深圳市海川实业股份有限公司 | Technology for producing external-wall latex paint capable of reproducing international color 1514 (green yellow) |
| CN101619184A (en) * | 2009-07-24 | 2010-01-06 | 中华制漆（深圳）有限公司 | Hand-feeling coating and preparation method thereof |
| CN101838493A (en) * | 2010-05-28 | 2010-09-22 | 中华制漆（深圳）有限公司 | Heat-insulating coating for inner wall |
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