CN1208414C - Latex paint for inner wall and its preparation - Google Patents
Latex paint for inner wall and its preparation Download PDFInfo
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- CN1208414C CN1208414C CN 01107542 CN01107542A CN1208414C CN 1208414 C CN1208414 C CN 1208414C CN 01107542 CN01107542 CN 01107542 CN 01107542 A CN01107542 A CN 01107542A CN 1208414 C CN1208414 C CN 1208414C
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Abstract
The present invention relates to an internal wall latex coating which is characterized in that the internal wall latex coating is prepared from tap water, dispersant, pigment, stuffing, a defoaming agent, a thickening agent A, a thickening agent B, a thickening agent C, anti-corrosive germicide, covering emulsion, polymer emulsion and color paste. A preparation method of the internal wall latex coating comprises the steps of premixing, high-speed dispersion, paint regulation and filtration. In the obtained product, the ingredients of VOC sources in a coating system are furthest reduced. Due to the adoption of nano-level TiO2 and porous stuffing, a coating layer can have favorable water rejection and air permeability so that the coating layer can 'breathe' and regulate the humidity of indoor air according to environment conditions and can kill bacteria and other harmful microorganisms to a human body.
Description
The present invention relates to paint field, particularly be applicable to as inner wall of building protection and decorate, self is harmless and can promote human physical and mental health's health type internal wall emulsion coating.
Damage the poisonous pigment that the healthy pollutent of people mainly comprises volatile organic compounds (VOC), anticorrosion and bactericidal agent, contains heavy metal element in more existing internal wall emulsion coatings.China also uses the pigment of metals such as a lot of leaded, chromium, cadmium in water-borne coatings, these pigment can be sucked by human body with the efflorescence of coating after the coating film forming, cause very big harm.In addition, contain metal-organic Antisepticize and mildew preventives such as mercury, copper, tin, arsenic, have stronger sterilizing power, but human body is also had bigger murder by poisoning.At present, people are in the pursuit to the high-performance internal wall emulsion coating, and what relatively pay attention to is the decoration and the defencive function of coating, and the pollution problem of less attention latex coating.
The development of developed countries construction coating for internal wall also more goes all out in latex coating.Research and Application and Development all is this class coating basically at present.Though Europe, the United States, day etc., developed country paid special attention to volatile organic compounds (VOC) control indexes, latex coating will be realized very low VOC index, is not nothing the matter.In the latex coating system, exist and to make many contradiction: make the coating film forming hard, anti-staining property is good, and its emulsion must possess higher second-order transition temperature, and will make such emulsion film forming, just must add itself be organic solvent help the knot agent; Make coating have low-temperature stability, will add frostproofer; Make the coating good leveling property, it is smooth to film, and need add flow agent; Obtain the emulsion that film forming properties is better, particle is more tiny, it is big that the emulsifying agent consumption is wanted; Coating is not become morally degenerate in storage process, must add anticorrosion and bactericidal agent.These components that added all can increase the pollutent in the coating, have improved the VOC content in the latex coating.
The objective of the invention is to shortcoming, a kind of internal wall emulsion coating is provided, reduced the composition in VOC source in the coating system dramatically, and use nano level TiO at the prior art existence
2And porous filler, make coating have good water and the ventilation property of refusing, can be according to envrionment conditions and the humidity of " breathings " and adjustment room air, but and kill bacteria and other harmful microorganisms.
The present invention also aims to provide a kind of preparation method of internal wall emulsion coating.
The weight of internal wall emulsion coating of the present invention is composed as follows:
Tap water 25-35%
Wetting dispersing agent 0.4-0.8%
Pigment 15-25%
Filler 10-15%
Defoamer 0.3-0.7%
Thickening material A 0.2-0.3%
Thickening material B 0.3-0.6%
Thickening material C 0.1-0.3%
Anticorrosion and bactericidal agent 0.1-0.3%
Opacifying property emulsion 5-8%
Polymer emulsion 20-40%
All the other are mill bases
Wetting dispersing agent in the present invention's prescription is different from the dispersion agent that uses in traditional latex coating, but a kind of non-ionic type polyvinylpyrrolidone class hyper-dispersant, hyper-dispersant SUPER PB-1 and PB-2 as the development of Guangzhou Nan worker's chemical industry company limited, under the anchoring group in its polymer (molecular weight is 80,000~160,000) structure and the acting in conjunction of solvation group, nano level TiO
2Particle is able to fully dispersion, and also stable existence is in system, and its optimum amount is 0.4~0.8% of a coating total amount, and consumption is crossed the water resistance that the conference influence is filmed.
Pigment comprises nano-TiO
2And titanium dioxide; Consumption is 15~25%; With nano-TiO
2Be incorporated in the coating, make it under special rare earth catalyst effect, produce high mars free radical.The consumption of nanoparticle is very crucial, as adds quantity not sufficient, does not then have the effect of expection; But dosage is too much, is not only a kind of waste, can play side effect on the contrary, makes the coating products downgrade, and its optimum amount is 0.3~0.5%.
Filler is a kaolin, diatomite, and talcum powder etc., fineness is greater than 700 orders; The use of filler not only can reduce cost, and can give filler some special performances, makes coating have certain thixotropy as kaolinic sheet structure, thereby improves the stability in storage of coating; Talcum powder has the function that prevents the coating sagging and absorb flexible stress, minimizing crack and hole in filming; Lime carbonate can improve coating suspension, in and the acidity of coating and improve smoothness etc.; Inert filler diatomite with trickle vesicular structure can form coating and has filming of little vesicular structure after drying.The optimum range of amount of filler is 10~15%, is the best between 25~45% with the pigment volume concentration (PVC) (PVC) of guarantee system.
Defoamer is a kind of polyether-modified polysiloxane solution, defoamer BYK-022 of for example German BYK company etc.; Its effect is the bubble in inhibition and the elimination coating, optimum amount 0.3~0.7%.Three kinds of thickening materials are used, and can adjust the rheological behaviour of coating under basic, normal, high shearing rate effectively, to obtain good leveling property, not sagging, the coating that has good stability, be easy to construct.
Thickening material A is that molecular-weight average is 50,000~70,000 ether of cellulose, for example Natvosol, hydroxypropylcellulose etc.; Its effect is to increase the viscosity of water with the dispersion efficiency that improves color stuffing, the final viscosity that increases coating, and optimum amount is 0.2~0.3%;
Thickening material B is the caustic solubility acrylate copolymer, for example AcrysolASE-60, the TT-935 etc. of Rohm and Haas company, and its effect is a viscosity of adjusting coating system under alkaline condition, optimum amount is 0.4~0.5%;
Thickening material C is a kind of nonionic hydrophobic nature modified epoxy ethane block polymers of polyurethane, for example COATEX BR 125P of the RW-8 of Rohm-Haas company, French COATEX company etc.; Its effect is to adjust viscosity and the rheological of coating under different shear stress, and optimum amount is 0.2~0.3%.
Anticorrosion and bactericidal agent is the organic compound of a kind of effectively inhibition and kill bacteria and mould, for example the Kathon LXE of ohmand Haas company and Rozone 2000,, the fine class antimildew disinfectant of benzene diformazan Nopcocide N-96 etc. between the tetrachloro of German Henkel company, its effect be prevent in the coating storage process become morally degenerate and application after the mildew of filming, optimum amount 0.2~0.3%; The pigment of heavy metal elements such as optimized choice of the present invention is not leaded, chromium, cadmium reaches and does not contain metal-organic benzoglyoxaline Urethylane in-can preservation agent such as mercury, copper, tin, arsenic.
Opacifying property emulsion is the styrene-propene acid copolymer dispersion that a shell is coating water-filled core, for example the Ropaque X-Tend of Rohm and Haas company and Ropaque OP-62B etc., its effect is the opacifying power that increases coating, reduce the consumption of titanium dioxide, also can improve the rheological of coating, its optimum amount is 6~8%.
Polymer emulsion is main filmogen, it can be to contain a kind of in the organosilicon-modified acrylic emulsion glycol chain segment structure, that have nucleocapsid structure, pure acrylic acid emulsion, benzene emulsion, the acrylate and vinyl acetate emulsion, or the mixing of two kinds or two kinds emulsions in them; This makes and need not add the glycols frostproofer and film coalescence aid but can make coating have good freeze-proof and film formation at low temp.So this prescription does not adopt the frostproofer and the film coalescence aid of VOC the largest source in traditional latex coating, greatly reduce total VOC amount of coating; Its optimum amount 28~35%.
Mill base is the aqueous color paste of iron oxide, phthalein mountain valley with clumps of trees and bamboo series pigments, carbon black, the red aqueous color paste of ultramarine amino toluene, etc.; The color of mill base is decided according to user's requirement.
In order to give full play to TiO
2The high-performance of nanoparticle can add rare earth catalyst in the prescription of the present invention, is one or more the mixture in the oxide compound of rare earth metal such as thorium, rhodium, palladium etc., and its consumption is ten thousand of a nanoparticle/to 3/10000ths.
Internal wall emulsion coating preparation method of the present invention comprises:
(1) pre-mixing: accurately take by weighing various materials by prescription, under stirring at low speed (100-150 rev/min), be sequentially added into dispersion medium water, wetting dispersing auxiliary, part defoamer, pigment, filler and thickening material A;
(2) high speed dispersion: carrying out at a high speed in homogenizer, (1000-1200 rev/min) disperses.The color stuffing particle is dispersed into simple particle under the high shear rate effect of homogenizer, and obtains the stably dispersing state under the effect of dispersing auxiliary system.The high speed dispersion time was at 20~30 minutes;
(3) paint: when the fineness of pigment slurry reaches needed fineness, should add base-material, opacifying property emulsion, part defoamer, PH conditioning agent, an amount of thickening material B and C, and other auxiliary agents, paint, add an amount of color paste toning as requested, this process low speed in paint mixing tank carries out (150-500 rev/min), to obtain the having suitable viscosity and the coating of good stability;
(4) filter: remove gritty particle and reach the color stuffing particle that does not reach fineness.
Gained coating can be contained in the Lacquered Tin Plate Can of different volumes on request.
Its construction process is as follows:
1, inner wall surface pre-treatment.Need the necessary close and firm of brushing metope ground, surfacing, no grease, dust, moisture content, mildew.Batch lime wall must be clean, treat the body of wall water ratio less than 10%, pH value can mopping less than 10 o'clock;
2, dilution.Before using coating is fully stirred evenly, can add the 10-20% clear water according to execution conditions and be diluted to suitable viscosity.
But 3, this coating roller coating, spraying, brush application, but should use in temperature more than 5 ℃.
When 4, mixing colours as need, the supporting special-used colour starch of available acrylic latex coating is transferred and is converted, and is sure not printing and dyeing mill base, oil pastes etc. are called in.
5, cover tight cover again after residue coating must be built with the clean plastics film of one deck, be placed on shady and cool dry and comfortable place.
6, storage temperature 0-35 ℃.The phase of depositing is 1 year, and the conformance with standard of exceeding the time limit still can be used.
7, be sure not and strong solvent furniture lacquer such as polyester, urethane is constructed in the same time and place.
The key technical indexes of the relevant health that the product of the present invention's preparation reaches is as follows:
The title technical indicator
Total volatile organic compound content (TVOC), g/L<60
Volatile organic compounds kind little fat clan elder paraffinic hydrocarbons
Formaldehyde, benzene and toluene all can not detect
Heavy metal content (mercury, lead, chromium, cadmium, arsenic, cobalt) is all less than 0.2ppm
Ame ' s feminine gender
LC50 >280,000mg/m
3
Skin experiment does not have anaphylaxis
The respiratory tract experiment is non-stimulated
Ultimate principle of the present invention is: on the basis that fully research coating compatibility is learned, contain the segment of ethylene glycol in selected film-forming polymer (emulsion) structure of the present invention, and its latex particle has the characteristic of nucleocapsid structure.Ethylene glycol segment in the film-forming polymer makes the glycols frostproofer that adds in this polymer emulsion and the traditional latex coating have similar antifreeze characteristic; Have good film formation at low temp performance and the latex coating that the characteristic of nucleocapsid structure makes film-forming polymer make need not add film coalescence aid under high glass transition temperature, but thereby have a good hardness of film pollution resistance.Optimized choice does not contain the pigment of heavy metal element and has the inert filler diatomite of trickle vesicular structure, and with nano-TiO
2Be incorporated in the coating, make full use of the characteristic of its high reactivity, high surface area and multi-cellular structure, coating can be formed after drying have filming of little vesicular structure.This is filmed and has good water and the ventilation property of refusing, can be according to envrionment conditions and " breathing " and adjust the humidity of room air; The TiO that introduces in filming
2Under special rare earth catalyst effect, can produce high mars free radical, the organic matter degradation of the generation peculiar smell that these free radicals can suck filming becomes tasteless substance, and these free radicals intersperse among in the air by respiration, kill bacteria and other harmful organism, thus reach the purpose that promotes human health.
The present invention compared with prior art has following advantage:
1, products obtained therefrom of the present invention integrates healthy and multi-functional, and it not only itself is healthy, the complex function that also has good hydrophobic permeable, kills bacterium, purifies air.As pressing down rate and reach more than 99.5% to 24 hours of streptococcus aureus killing, simultaneously can also degradation of contaminant; Can adjust humidity according to the room air situation.
2, the technological process of production of the technological process of production of products obtained therefrom of the present invention and conventional internal wall emulsion coating is in full accord, and used major equipment and starting material all can buy on market and obtain, and is easy to realize scale operation.
3, the opacifying power height of products obtained therefrom of the present invention, theoretical value reach 10 square metres/kilogram (builds: 40 microns), are applicable to the surface daub on a wall of indoor grey mud wall, concrete, masonry, gypsum, brick wall, plank, asbestos plate etc.
The invention will be further described below by embodiment.
Embodiment 1
Prescription is: 30.8 kilograms in tap water, 0.8 kilogram of SUPER PB-1 wetting dispersing agent, 24.5 kilograms of Rutile type Titanium Dioxides (0.2 μ m), nano-TiO
2(60-80nm) 0.5 kilogram, 9 kilograms of talcum powder (800 order), 5 kilograms in diatomite (1000 order), rare earth addition trace, 0.3 kilogram of defoamer BYK-022,0.3 kilogram of thickening material A (Natvosol), 0.6 kilogram of thickening material B (ASE-60), 0.1 kilogram of thickening material C (RW-8), 0.1 kilogram of antimildew disinfectant Kathon LXE, 8 kilograms of opacifying property emulsion OP-62B, 20 kilograms of organosilicon-modified acrylic emulsions.The blending process step is: 1. at first disperse to add in the cylinder dispersion medium water at 200 liters of stainless steels, start stirrer, accurately take by weighing various materials by prescription then, under stirring state, add wetting dispersing auxiliary, 2/3 defoamer, thickening material A, Rutile type Titanium Dioxide and nano-TiO
2, stirred 5 minutes down at low speed (150-500 rev/min), add talcum powder and diatomite again.2. (1000-1200 rev/min) dispersion at a high speed in homogenizer.The color stuffing particle is dispersed into simple particle under the high shear rate effect of homogenizer, because of the high speed shear effect of dispersion machine, the temperature in the cylinder rises to 50 ℃ simultaneously.Check the fineness discovery of slurry, after about 25 minutes, the fineness of pigment slurry is less than 20 μ m in high speed dispersion.Turn down rotating speed, so that paint.3. paint.2. the slurry of gained is transferred in the 200 rising tune paint cans, under low speed (150-500 rev/min), add successively opacifying property emulsion, organosilicon-modified acrylic emulsion base-material, residue defoamer, PH conditioning agent, thickening material B with C, reach other auxiliary agents, paint.Can add an amount of versicolor color paste toning as requested, to make user's interior wall coating that need, bright and colourful.By this process, the suitable viscosity and the coating of good stability have been obtained having.4. adopting diameter is that 450 millimeters 400 order vibratory screening apparatuss filter, and removes gritty particle and does not reach the color stuffing particle of fineness.5. pack.As requested coating is contained in the Lacquered Tin Plate Can of different volumes, promptly obtains of the present invention from respiratory health type internal wall emulsion coating.This product does not have solvent odor, and is nontoxic, non-environmental-pollution, and rich color is beautiful, and the sliding as silk of lacquer painting children exactly likes the solvent-borne type alkyd varnish, the flow leveling brilliance; Strong covering power has graceful warm zero diopter decorative effect, belongs to the environmental type building and ornament materials.After testing, this coating has good water-fast, alkaline resistance properties, and its washability number of times of filming is greater than 3000; Through quickening to store experiment, under 50 ℃ of situations, store 2 months, coating does not have bad phenomenon such as any corruption, caking, branch water.
Embodiment 2
Certain newly-built villa district in order to beautify the environment, promote the healthy of resident, has adopted this product to carry out interior wall and has covered with paint, lacquer, colour wash, etc.Prescription is: 25 kilograms in tap water, 0.4 kilogram of SUPER PB-1 wetting dispersing agent, 17.5 kilograms of Rutile type Titanium Dioxides (0.2 μ m), nano-TiO
2(60-80nm) 0.5 kilogram, 6 kilograms of kaolin (1250 order), 4 kilograms in diatomite (1000 order), rare earth addition trace, 0.4 kilogram of defoamer BYK-022,0.2 kilogram of thickening material A (Natvosol), 0.5 kilogram of thickening material B (TT-935), 0.3 kilogram of thickening material C (RW-8), 0.2 kilogram of antimildew disinfectant Kathon LXE, 5 kilograms of opacifying property emulsion OP-62B, 40 kilograms of pure acrylic acid emulsions.The tap water that adds 10% latex coating amount during construction stirred 15 minutes, and it is mixed, and can use.Before brushing paint, interior wall is clean, smooth and exsiccant, has scraped on it and has been wiped with putty, and used sand papering smooth.Adopt synthetic scrub-brush brush application.Inner wall surface texture behind the noble mercerized wall paint that brushing the present invention makes is good, pliable and tough, and gloss is bright, and appearance looks elegant is generous, can build comfortable, quiet, graceful indoor environment, and the mildew-resistant alkali resistant, strong covering power, and available washing is smeared.Construction is finished after 1 year and is checked to the building site, and metope is light as newly still, and coating do not see and peel off, ftracture, pollute, and maintains the sub dued lustre as the silk.
Embodiment 3
The 1st building of certain high-rise office building~the 8th buildings have adopted this product to carry out interior wall and have covered with paint, lacquer, colour wash, etc., and its 9th building~the 18th buildings adopt the internal wall emulsion coating of another manufacturer production to cover with paint, lacquer, colour wash, etc. simultaneously.Prescription is: 35 kilograms in water, 0.6 kilogram of SUPER PB-1 wetting dispersing agent, 14.6 kilograms of Rutile type Titanium Dioxides (0.2 μ m), nano-TiO
2(60-80nm) 0.4 kilogram, 5 kilograms of talcum powder (800 order), 6 kilograms in lime carbonate (700 order), 4 kilograms in diatomite (1000 order), the rare earth addition trace, 0.7 kilogram of defoamer BYK-022,0.3 kilogram of thickening material A (Natvosol), 0.3 kilogram of thickening material B (TT-935), 0.2 kilogram of thickening material C (BR 125P), 0.3 kilogram of NopcocideN-96,6 kilograms of opacifying property emulsion Ropaque X-Tend, 26.6 kilograms of benzene emulsions.The tap water that adds 20% latex coating amount during construction stirred 15 minutes, and it is mixed, and just can use.Before brushing paint, interior wall is clean, smooth and exsiccant.Adopt synthetic scrub-brush brush application.Engineering completion back workmen thinks that coating of the present invention is constructed easily, fast drying, and the opacifying power height, prior advantage is the smell that this coating does not have any organic solvent, and is nontoxic, the workmen does not have the sensation of any discomfort; And when adopting another kind of coating brushing the 9th buildings~the 18th buildings, the workmen often feels that the smell of coating stimulates eyes, and just feels to breathe after indoor for some time and have some setbacks, and feels sick, and is uncomfortable.Therefore, they advise that strongly the builder adopts coating of the present invention.The engineering completion is detected discovery to this office building after half a year, and metope is light as new still, still keeps its distinctive elegant noble quality.
Claims (4)
1, a kind of internal wall emulsion coating, it is characterized in that weight is composed as follows: tap water 25-35%, wetting dispersing agent 0.4-0.8%, pigment 15-25%, filler 10-15%, defoamer 0.3-0.7%, thickening material A0.2-0.3%, thickening material B0.3-0.6%, thickening material C0.1-0.3%, anticorrosion and bactericidal agent 0.1-0.3%, opacifying property emulsion 5-8%, polymer emulsion 20-40%, all the other are mill bases; Wetting dispersing agent is the non-ionic type polyvinylpyrrolidone hyper-dispersant that contains anchoring group and solvation group in a kind of molecular structure; Pigment comprises nano-TiO
2And titanium dioxide, nano-TiO
2Consumption account for 0.3~0.5% of total amount; Filler be the kaolin of sheet structure, trickle vesicular structure diatomite, have the talcum powder of sag prevention function and can improve in the lime carbonate of coating suspension one or more; Defoamer is polyether-modified polysiloxane solution; Thickening material A is that a kind of molecular weight is 50,000-70,000 ether of cellulose, thickening material B is a kind of caustic solubility acrylate copolymer that increases the coating system aqueous viscosity under alkaline condition, and thickening material C is a kind of nonionic hydrophobic nature modified epoxy ethane block polymers of polyurethane with associative thickening function; Opacifying property emulsion is the styrene-propene acid copolymer dispersion that a kind of shell is coating water-filled core; Polymer emulsion is the organosilicon-modified acrylic emulsion that contains the glycol chain segment structure, has nucleocapsid structure.
2, internal wall emulsion coating according to claim 1 is characterized in that the polymer emulsion consumption accounts for 28~35% weight.
3, internal wall emulsion coating according to claim 1 and 2 is characterized in that also comprising that rare earth metal is one or more the rare earth catalyst of mixture in the oxide compound of thorium, rhodium, palladium, and its consumption is ten thousand of a nanoparticle/to 3/10000ths.
4, the preparation method of the described latex coating of claim 1 is characterized in that comprising:
---pre-mixing: take by weighing various materials by prescription,, be sequentially added into dispersion medium water, wetting dispersing auxiliary, part defoamer, pigment, filler and thickening material A in rotating speed 100-150 rev/min stirring;
---high speed dispersion: in rotating speed is 1000-1200 rev/min stirrer, disperse; Pigment and filler grain are dispersed into simple particle, obtain the stably dispersing state; 20~30 minutes high speed dispersion time;
---paint: add polymer emulsion, opacifying property emulsion, part defoamer, PH conditioning agent, thickening material B and C, paint; Add color paste toning; This process 150-500 rev/min of rotating speed in paint mixing tank carries out, and obtains coating;
---filter: remove gritty particle and reach pigment and the filler grain that does not reach fineness.
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CN 01107542 CN1208414C (en) | 2001-02-19 | 2001-02-19 | Latex paint for inner wall and its preparation |
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CN 01107542 CN1208414C (en) | 2001-02-19 | 2001-02-19 | Latex paint for inner wall and its preparation |
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CN116445045A (en) * | 2023-06-15 | 2023-07-18 | 汕头市森林王子涂料有限公司 | Adsorption environment-friendly paint and preparation method thereof |
-
2001
- 2001-02-19 CN CN 01107542 patent/CN1208414C/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN106634325A (en) * | 2016-10-12 | 2017-05-10 | 广东嘉宝莉科技材料有限公司 | Efficient leveling latex paint and preparation method thereof |
CN106634325B (en) * | 2016-10-12 | 2019-03-08 | 广东嘉宝莉科技材料有限公司 | The emulsion paint and preparation method thereof of efficient levelling |
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