TW201610030A - Nano anion functional water-in-water interior wall paint and preparation method thereof - Google Patents

Abstract

The present invention discloses a nano anion functional water-in-water interior wall paint and preparation method thereof. The interior wall paint is formed by the following three phases: colloidal solution, granulator base paint and finished latex paint, with each component containing the following ingredients: (1) the colloidal solution consisting of water, cross-linking stabilizer, protective powder; (2) the granulation base paint consisting of water, wetting and dispersing agent, propylene glycol, defoamers, hydroxyethyl cellulose, elastic polymer emulsions, colloidal solution, environment friendly inorganic composite pigment, coalescent; (3) the finished latex paint consisting of elastic polymer emulsions, water, coalescent, propylene glycol, defoamers, granulation paint, water-soluble compound nano anion powder, alkali-swellable thickener; wherein the granulation paint in the finished latex paint actually is the paint that is obtained by subjecting the granulator base paint to a granulating process. The paint is environment friendly, safe, highly efficient, energy-saving, relatively inexpensive, and can efficiently release anions, thus providing ample practical benefits and good application prospects.

Description

Nano negative ion functional water-in-water interior wall paint and preparation method thereof

The invention relates to the technical field of water-in-water interior wall coatings, in particular to a nano anion functional water-in-water interior wall coating and a preparation method thereof.

The water-in-water colorful paint breaks the decorative effect of the traditional single color flat coating, creating a colorful, three-dimensional decorative surface, which is favored by consumers. More people use it to decorate the interior TV background and other places in the room. With the wide application of water-in-water multi-color coatings and more and more human contact, the environmental protection and other requirements of coatings are getting higher and higher.

Water-in-oil interior wall coatings sold on the market, mixed brands, uneven quality, and some contain harmful substances such as heavy metals, and release such as formaldehyde, VOC (volatile organic compounds), etc. It is poisonous to the human body and causes serious pollution to the environment. Negative ions are known as "air vitamins and auxins". Like the vitamins of food, negative ions have a very important positive impact on the life activities of humans and other organisms. The level of negative ions is an important indicator for evaluating the environment and air quality.

The applicant's prior patent CN104177940A discloses a solar thermal reflection heat-insulating water-in-water colorful environmentally friendly coating which is formed in three stages of a colloidal solution, a granulation base paint and a latex finished paint. The coating is versatile and can be insulated, but it does not release negative ions and is not functional enough.

Some patents have added negative ion components to colorful coatings. For example, CN101104766A, when the colorful coating contains C component, it contains negative ions to start the inorganic material, but the patent does not specify the composition of the material, and only the indoor air is measured. The formaldehyde content is not explained by the negative ion release ability. Similarly, CN101440232A's multi-functional thick-skin nano-wall paint, CN103275540A's insecticidal color paint, did not specify the substance of the negative ion additive, nor did it determine its negative ion release capacity.

Therefore, there is an urgent need for a low-cost environmentally-friendly anion water-in-water interior wall paint which has a small amount of raw materials for generating negative ions but can efficiently release negative ions. The coating has environmental protection, energy saving, high efficiency, sustained release of negative ions, purification of toxic and harmful gases in the air, Improve the body's immunity.

An object of the present invention is to provide a nano-ion functional water-in-water interior wall paint comprising a polymer emulsion, a water-soluble complex anion powder, and the like. The water-in-water interior wall coating is safe, environmentally friendly, low-cost, and capable of continuously releasing negative ions.

Another object of the present invention is to provide a method of preparing a nano anion functional water-in-oil interior wall coating. The preparation method is simple in operation and can be industrially produced.

The invention provides a nano-ion-ion functional water-in-oil interior wall paint, which is formed by three stages of a colloid solution, a granulation base paint and a latex finished paint, and the specific components contained in each part are as follows:

1. Colloidal solution: 90-100 parts by weight of water, 2 parts by weight of crosslinking stabilizer, and 7-8 parts by weight of protective rubber powder;

2. Granulation base paint: 400-450 parts by weight of water, 6-10 parts by weight of wetting and dispersing agent, 10-15 parts by weight of propylene glycol, 4-9 parts by weight of antifoaming agent, 5-10 parts by weight of hydroxyethyl cellulose 250-300 parts by weight of the elastic polymer emulsion, 100-150 parts by weight of the colloidal solution, 40-50 parts by weight of the environmentally-friendly inorganic composite pigment, 5-8 parts by weight of the film-forming auxiliary agent, and 0-4 parts by weight of the pH adjusting agent;

3. Latex finished paint: 200-280 parts by weight of elastic polymer emulsion, 180-250 parts by weight of water, 12-16 parts by weight of film-forming auxiliary agent, 8-10 parts by weight of propylene glycol, 0.5-1 part by weight of antifoaming agent, 480-510 parts by weight of the particle varnish, 3-5 parts by weight of the water-soluble complex anion powder, and 2-3 parts by weight of the alkali swellable thickener;

The granulated lacquer described in the latex finished lacquer is the granulated lacquer after the granulation base lacquer.

The water-soluble composite nano anion powder is preferably a nano-sized composite powder obtained by nano-milling of two or more kinds of crystal, quartz, vermiculite, medical stone, and tourmaline.

More preferably, the proportion by weight of each raw material in the water-soluble composite nano anion powder is nano crystal powder: nano quartz powder: nano vermiculite powder: nano medical stone: nano tourmaline=0-3: 1-3:0-2:1-3:1-5.

More preferably, the nanopowder has a particle size of 40 to 100 nm. Generally, the smaller the particle size of the nanopowder, the larger its specific surface, the higher the energy that provides ion transfer, and the stronger the negative ion release function.

Negative ions are free particles in the air. If there is enough energy to act on the molecules, the molecules will release an electron, and the electrons will combine with the molecules in the vicinity to form negative ions. A molecule consists of atoms and ions and has no charge. Nanoparticles have a small particle size, a large specific surface area, a high surface energy, and a large proportion of surface atoms, which provide a huge energy for molecular ionization, and thus continuously release negative ions. Thermoelectricity and piezoelectricity mean that there is a temperature and pressure change (even a small change) that can cause a potential difference between the constituent crystals, which is as high as 1 million electron volts, so that the air is ionized and hit. Electrons attach to adjacent water and oxygen molecules and convert it into air negative ions, ie negative ions.

Crystal is a quartz crystal mineral whose main chemical component is cerium oxide and its chemical formula is SiO ₂ . Crystal has a strong piezoelectricity. When a crystal crystal is under pressure, it generates a charge, and ionization occurs, and negative ions are continuously released.

The main component of quartz is SiO ₂ , which is colorless and transparent. It has strong piezoelectricity. When the quartz crystal is under pressure, it will generate electric charge, and ionization will occur, and negative ions will be released continuously.

Vermiculite is a natural, non-toxic mineral. Due to the ion exchange capacity of vermiculite, molecules are easily lost or get electrons and become ions, which release negative ions, which has a great effect on air purification.

Maifanite is a volcanic rock. The main chemical component is inorganic yttrium aluminate. It is a compound mineral or medicinal rock that is non-toxic, harmless and biologically active. The maifan stone contains natural minerals and oxygen, which are released from numerous pores on the stone, and then continuously release negative oxygen ions by ionization.

Tourmaline is a non-metal silicate mineral with aluminum, sodium, iron and lithium ring structure characterized by boron. It has piezoelectricity and pyroelectricity. The electrical crystal is columnar, and the aggregate is rod-shaped and radial. Small needle-like, also in the form of dense blocks or hidden crystals. Since tourmaline has unique physicochemical properties such as piezoelectricity and pyroelectricity, negative ions can be generated.

The invention refines two or more of the aforementioned natural non-metallic ores into nano-sized powders by nano-grinding production technology, and prepares a novel water-soluble nano anion powder by compounding the nano powder. The invention utilizes the piezoelectricity, pyroelectricity and ion exchange property of the ore itself to form a pure natural non-metallic mineral nano material, which has natural, environmental protection, non-toxicity, safety, is easily soluble in water, and can be directly added to the water-based coating system. In the product, the production method and performance of the original paint are not changed after the addition; the stable system of the original paint is not affected. Moreover, the water-soluble nano anion powder is added in a small amount, but its ability to release negative ions is strong.

The invention adds the water-soluble composite nano anion powder into the water-in-water interior wall paint, so that the coating has the effect of continuously releasing negative ions, adsorbing toxic and harmful gases such as formaldehyde and VOC in the environment, thereby purifying the air and improving the human respiratory environment. Good for human health.

Preferably, the crosslinking stabilizer is sodium pyrophosphate, which is capable of softening water, deflocculation, and redissolving insoluble salts of calcium and magnesium to ensure that the colloidal fluid maintains flow and stability.

Preferably, the protective rubber powder is lithium magnesium niobate. The crystal structure of the gel is a micro-sheet of unit thickness measured in nanometers, and the surface of the sheet is covered with exchangeable cations, mainly sodium ions (Na ⁺ ). When the gel particles are mixed with water, the water is adsorbed to the surface of the sheet by contact with sodium ions (Na ⁺ ), and the gel is spread along the sheet, which causes the particles to rapidly expand until the sheets are separated. Since the sheet layer is negatively charged, the end face is positively charged, and the separated sheet end faces are attracted to the other sheet layer, thereby forming a three-dimensional space colloidal structure, that is, a house of cards structure, which is also in the same system. Other fine particles provide optimum suspension.

Among them, the elastic polymer emulsion can be various conventional elastic emulsions for coatings. Preferably, it is one or more of an anionic styrene-acrylic elastomer emulsion, a pure acrylic elastomer emulsion, and a propylene-acrylic polymer emulsion. The paint film formed by natural drying has good water resistance and acid and alkali resistance.

The negative charge in the anionic polymer emulsion and the negative charge on the thin layer of the lithium magnesium niobate protective gel cause the water-in-water particles to coexist and not dissolve, and do not bleed each other, so that the water-in-water coating has a good Compatibility, balance and storage stability, so the particles of each color will not flocculate, resulting in ultra-long stability. Water-in-water coatings made from other ionic polymer emulsions do not ensure compatibility, balance and storage stability between the water-in-water particles.

For hydroxyethyl cellulose, it is a nonionic surfactant that has the functions of thickening, suspending, bonding, bubbling, film forming, dispersing, retaining water and providing a protective colloid. Its water retention capacity is twice as high as that of methyl cellulose, and it has good flow regulation; its dispersing ability is the worst dispersing ability compared with the recognized methyl cellulose and hydroxypropyl methyl cellulose, but it has the strongest protective colloid ability. It has a wide range of solubility, viscosity characteristics, non-thermogelability; it can coexist with other water-soluble polymers, surfactants and salts in a wide range, and is an excellent colloid thickener containing a high concentration of electrolyte solution. . Hydroxyethyl cellulose is preferably hydroxyethyl cellulose of Feicheng Yutian Chemical.

Preferably, the environmentally friendly inorganic composite pigment is preferably a Peamont composite inorganic pigment CICP, titanium dioxide or a combination thereof.

Among them, CICP is a high-performance, high-environment composite inorganic pigment. It is a pigment formed by mixing various inorganic salts after high-temperature simmering, air convection pulverization, and then cutting. It has excellent weather resistance and chemical resistance. High temperature resistance, easy dispersion, strong thermal stability, excellent tinting strength and hiding power, can effectively improve the solar light heat reflection efficiency, can be used in coatings to reduce the surface temperature of the system, and play the role of heat insulation, environmental protection and energy saving, and improve The thermal comfort of the environment saves energy and extends the service life of the paint.

Among them, titanium dioxide (titanium dioxide) is preferably R-996 of Sichuan Longyan Titanium Industry Co., Ltd. Its surface is treated by bismuth, aluminum, zirconium and organic treatment. It has no physiological toxicity, stable chemical properties, excellent pigment performance and whiteness. Brightness, gloss, opacity, achromatic power and fluidity.

Preferably, the wetting and dispersing agent is BYK-192 produced by BYK Company, which is specially used for water-based paint, and has the effect of reducing the surface tension to wet the substrate and dispersing the color paint for the water-based paint.

The film-forming aid is preferably an environmentally friendly film-forming auxiliary ester alcohol 12 supplied by Eastman Teanol. The additive is a particularly excellent coalescing aid, is a film forming aid for the emulsion, and is also a good solvent for the polymerization emulsion, and can effectively reduce the minimum film forming temperature of the polymerization emulsion. The additive has a certain volatility, and stays in the coating film to form a film during the film formation process, and all volatilizes after film formation, and does not remain in the dry film, so it does not affect the film properties. The solubility in water is low, and the stability of the polymerization emulsion is not affected after being added, but the film formation performance of the coating film can be remarkably improved, and the weather resistance, abrasion resistance, stain resistance and chemical resistance of the coating film can be improved. Improve coating color development.

The leveling agent is preferably BYK-375 of BYK Chemical, which is particularly suitable for use in aqueous systems with low co-solvent content and has good compatibility with these systems. It is suitable for cross-linking system by reacting its primary hydroxyl group with the base material. The leveling agent can improve slipperiness, solvent resistance, weather resistance and less dust accumulation. Compared with the standard non-reactive organic hydrazine, the auxiliaries are more durable in the coating system due to the crosslinking of the reactive groups with the paint film, which significantly reduces the surface tension and enhances the wetting of the substrate. Flow and level and prevent the formation of the Bernard vortex.

The antifreeze agent is preferably propylene glycol, which is environmentally friendly and cost effective. The alkali-swelling thickener is preferably an anionic alkali-swelling thickener UCAR POLYPHONE T-900 and T-901 produced by Dow, and should be mainly UCAR POLYPHONE T-901 with a small amount of UCAR POLYPHONE T-900. Such thickeners are very economical, and the lower amount can significantly improve the medium shear viscosity, and can effectively improve the fluidity and leveling of the coating compared with the cellulose thickener.

The antifoaming agent is preferably BYK-022 of BYK Chemical. The defoaming agent is an organic antimony defoaming agent for waterborne coatings. It is extremely effective in the production and application of waterborne coatings, and it has no effect on color acceptability and gloss. When added, a high enough shear force is required to avoid shrinkage. This defoamer has excellent long-term stability and is extremely effective against microbubbles. It is VOC-free and highly environmentally friendly.

In the preparation of the granulation base paint, if the product pH is between 8 and 9, the pH adjuster is no longer added, and if not, 0-4 parts by weight of the pH adjuster is added. The pH adjuster is preferably AMP-96 manufactured by Dow, which stabilizes the pH of the system while improving the performance of the thickener in the aqueous paint. By replacing the traditional ammonia water with it, the ammonia smell of the paint can be reduced.

By adding a combination of the above various additives, the physical and chemical functions of the coating film can be enhanced and enhanced.

Preferably, the water in the raw material is pure water, and the tap water contains more impurities due to the addition of bleaching powder, etc., which may result in poor storage stability of the water-in-water interior wall paint product.

According to the length of use of water-in-water interior paint products, you can choose whether to add preservatives. If the products are used directly within one week, no preservatives can be added. When the construction period is long, a preservative is added, which is preferably a high-performance bactericidal preservative Kathon Lxe produced by Rohm and Haas, which inhibits the growth of bacteria and fungi during production and storage, has a high activity range, and can Effectively inhibits bacteria (including Gram-positive, Gram-negative) molds, yeasts, does not release formaldehyde, and is low in toxicity.

The invention also provides a method for preparing the above nano negative ion functional water-in-water interior wall paint, the method comprising the following steps:

1. Preparation of colloidal solution: 90-100 parts by weight of water is added to the first mixing container, 2 parts by weight of the crosslinking stabilizer is added under stirring, and 7-8 parts by weight of the protective rubber powder is added after dissolution, and the mixture is uniformly stirred;

2. Preparation of granulation base paint: 400-450 parts by weight of water is added to the second mixing container, 6-10 parts by weight of the wetting dispersing agent, 4-9 parts by weight of the antifoaming agent, and film forming auxiliary agent 5 are added under stirring. -8 parts by weight, 10-15 parts by weight of propylene glycol, 5-10 parts by weight of hydroxyethyl cellulose, and stirred into a gel form, and then added 40-50 parts by weight of the environmentally-friendly inorganic composite pigment; after being uniformly stirred, grinding, and adding an elastic polymer under stirring 250-300 parts by weight of the emulsion, 100-150 parts by weight of the colloidal solution prepared in the step 1, and stirred uniformly;

3. Granulation process: 100 parts by weight of the colloidal solution is added to the third mixing vessel, and then 100 parts by weight of the granulation base paint is applied, and uniformly granulated by a sieve to form a particle lacquer;

4. Preparation of latex finished paint: 180-250 parts by weight of water is added to the fourth mixing container, 200-280 parts by weight of the elastic polymer emulsion is added under stirring, and 12-16 parts by weight of the film-forming auxiliary agent is added, and the water-soluble compound is added. 3-5 parts by weight of nano anion powder, 0.5-1 part by weight of antifoaming agent, 8-10 parts by weight of propylene glycol, and after stirring evenly, adding 480-510 parts by weight of the granulated paint, and finally adding alkali swelling thickener 2- 3 parts by weight of the viscosity of the conditioning system.

Preferably, any one of the above mixing containers is a paint tank, and the high speed frequency conversion mixer is used for stirring.

Preferably, when preparing the colloidal solution, the stirring speed is 1000-1500 rpm; and the stirring time is 10-20 minutes after adding the protective rubber powder. When preparing the granulation base paint, the stirring speed is 500-800 rpm. The grinding is carried out on a horizontal sand mill, ground to a fineness of ≤ 30 μm, and then transferred to a mixing vessel. The rotational speed is 800-1000 rpm when the elastomeric polymer emulsion is added. When preparing the latex finished paint, the stirring speed is 600-800 rpm.

In the granulation process, the screen mesh of the corresponding mesh is selected according to the size required for the color granules. The final viscosity of the system is preferably 75 ± 5 ku.

More preferably, when preparing the latex finished paint, it is better to use the column water-in-water colorful paint dispersing device with low shearing force in the utility model patent announcement CN 204380568 U to disperse and stir the particle paint, and the stirring speed is 300-500 rpm, this prevents the particles from being broken when the added granule paint is stirred and dispersed.

The invention relates to a method for constructing a nano-ion functional water-in-water interior wall paint comprising the following steps:

1. Preparation:

The paint does not need to be added with water, and can be directly sprayed and applied by air spraying. First, if there are oil stains, dust and dirt on the wall surface, it must be removed with wire brush or sandpaper first, such as honeycomb, crack, hollow drum, etc. Phenomenon should be repaired with external wall putty and dried before construction. Secondly, before the construction, the window sill, the door edge and some grounds may be covered with plastic film.

2. Spray water-in-water coating:

Use a special spray gun to uniformly spray the water-in-water coating (one shot is colorful). Pay attention to the combination of air pressure and nozzle diameter to make it evenly coated. It is necessary to first apply the characteristics of the coating to the diameter and pressure of the spray gun. Test, and then spray coating on a large area. The spray gun should be operated at a certain speed, a certain distance, and the nozzle and spray surface should be kept parallel. The finishing position of the spraying should be at the jointing point. When spraying, it must be sprayed when it is not dry. If it is dried and then sprayed, it will easily produce fine grain overlap, which will affect the appearance. The same construction surface is best to be sprayed as soon as possible. Allow the base to be sprayed once without drying.

In addition, it should be noted that this product should not be stirred vigorously, and should not be mixed with other substances. It should not be diluted with water. The paint after opening can be used up as soon as possible. After one day of construction, remove the protective cover plastic film, clean and clean the relevant parts. With the ground; completely hardened and naturally dried for seven days.

The beneficial effects of the invention are:

1. The anionic polymer emulsion in the raw material synergizes with the lithium magnesium silicate protective rubber. The charge interaction between the two makes the water-in-water interior wall coating achieve ultra-long storage stability for more than 18 months, and is easy to display in the store for a long time. And sales.

2. Water-soluble nano anion powder is added to the raw material, which does not contain heavy metals, and does not generate radiation. It is environmentally safe and non-toxic; and its low addition amount can continuously release negative ions efficiently, and the purity of water-soluble nano anion powder can reach 99%, the highest negative ion release of pure product is 80,000 ion / cc. After long-term research and practice tests, the nano-anion powder in the end product can reach the sustained release of negative ions at 0.1%, and the negative ion release of the terminal products reaches the optimal concentration of 4000-5000/cm ³ recommended by international experts. . That is, the water-soluble nano anion powder is not only safe and environmentally friendly, but also has a very high cost performance.

3. The water-in-oil interior wall paint of the invention has strong decorativeness, and can adjust various colors and creative elements according to the requirements of customers, and has strong DIY property.

4. The product of the invention has super scrub resistance, alkali resistance, water resistance, stain resistance and wall crack resistance, and is widely used for wall decoration of kindergartens, hospitals, nursing homes, high-end hotels and high-end villas.

5. The product formulation design does not add a cosolvent containing volatile organic compounds, and does not contain heavy metals harmful to the human body. The product can achieve ultra-low VOC and has good environmental protection.

The invention will be further clarified by the specific examples of the invention given below, but they are not intended to limit the invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The portions not specifically described in the examples are obtained using prior art, well-known technical means, and industry standards.

Unless otherwise stated, the parts used in the present invention are all parts by weight.

The specific composition and particle size of the water-soluble composite nano anion powder in each of the examples are shown in Table 1.

Table 1 Water-soluble composite nano anion powder formula and particle size

Example 1

Prepare nano-nano functional water-in-oil interior wall paint according to the formula weight of Table 2, including the following steps:

1. Preparation of colloidal solution: Add pure water in the first paint tank, add cross-linking stabilizer under stirring with 13KW high-speed variable frequency mixer, stir the rotation speed to 1400 rpm, stir the cross-linking stabilizer completely after 15min, add protection Glue powder, stir evenly;

2. Preparation of granulation base paint: adding pure water in the second paint tank, adding wetting dispersant, defoaming agent, film forming aid, propylene glycol, hydroxyethyl cellulose, pH adjuster, stirring speed For 700 rpm, stir into a gel, add environmentally friendly inorganic composite pigment CICP and titanium dioxide, stir evenly and grind on a horizontal sand mill to a fineness ≤ 30μm, 900 rpm, add styrene The elastic polymer emulsion, the colloidal solution prepared in the step 1, is uniformly stirred;

3, granulation process: the third paint tank is added to the colloidal solution, and then into the granulation base paint, and then the sieve is used for uniform granulation to form a particle lacquer;

4. Preparation of latex finished paint: Add pure water to the fourth paint tank, add styrene-acrylic elastomer emulsion under stirring of 700 rpm, and then add film-forming agent, water-soluble nano anion powder 3-5 weight. Parts, defoamer, propylene glycol, after stirring evenly, add the particle lacquer, and finally adjust the viscosity of the system with an alkali swell thickener.

The construction method is as follows:

1. Preparation:

The paint does not need to be added with water, and can be directly sprayed and applied by air spraying. First, if there are oil stains, dust and dirt on the wall surface, it must be removed with wire brush or sandpaper first, such as honeycomb, crack, hollow drum, etc. Phenomenon should be repaired with external wall putty and dried before construction. Secondly, before the construction, the window sill, the door edge and some grounds may be covered with plastic film.

2. Spray water-in-water coating:

Use a special spray gun to uniformly spray the water-in-water coating (one shot is colorful). Pay attention to the combination of air pressure and nozzle diameter to make it evenly coated. It is necessary to first apply the characteristics of the coating to the diameter and pressure of the spray gun. Test, and then spray coating on a large area. The spray gun should be operated at a certain speed, a certain distance, and the nozzle and spray surface should be kept parallel. The finishing position of the spraying should be at the jointing point. When spraying, it must be sprayed when it is not dry. If it is dried and then sprayed, it will easily produce fine grain overlap, which will affect the appearance. The same construction surface is best to be sprayed as soon as possible. Allow the base to be sprayed once without drying.

Example 2

The adjustment of the formula ratio of this embodiment is shown in Table 2. The specific implementation process is basically the same as that of the first embodiment. The difference is only in the preparation of the colloidal solution, the stirring speed is 1100 rpm; the stirring time after adding the protective rubber powder is 10 min; When the granulation base paint is used, the stirring speed is 500 rpm; when the elastic polymer emulsion is added, the rotation speed is 800 rpm; when the latex lacquer is prepared, the stirring speed is 600 rpm.

Example 3

The adjustment of the formula ratio of this embodiment is shown in Table 2. The specific implementation process is basically the same as that of the first embodiment. The difference is only in the preparation of the colloidal solution, the stirring speed is 1500 rpm; the stirring time after adding the protective rubber powder is 20 min; When the granulation base paint is used, the stirring speed is 800 rpm; when the elastic polymer emulsion is added, the rotation speed is 1000 rpm; when the latex finished lacquer is prepared, the stirring speed is 800 rpm.

Example 4

The adjustment of the formula ratio of this embodiment is shown in Table 2. The specific implementation process is basically the same as that of Embodiment 1.

Table 2 Nano negative ion functional water-in-water interior wall paint formula

The nano anion functional water-in-water interior wall coating prepared above is tested according to the national standard HG/T4343-2012 "aqueous water-in-water architectural coating" and HG/T 4109-2009 negative ion functional coating. The test results are shown in Table 3.

Table 3 Performance test results of nano-ion functional water-in-water interior wall coating

The above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, and thus the equivalent changes made by the scope of the present invention remain within the scope of the present invention.

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Claims (10)

The utility model relates to a nano negative ion functional water-in-water interior wall paint, which comprises a three-stage formation of a colloidal solution, a granulation base paint and a latex finished paint, and the specific components contained in each part are as follows: 1. Colloidal solution: water 90-100 weight Parts, crosslinking stabilizer 2 parts by weight and protective rubber powder 7-8 parts by weight; Second, granulation base paint: water 400-450 parts by weight, wetting dispersing agent 6-10 parts by weight, propylene glycol 10-15 parts by weight, 4-9 parts by weight of antifoaming agent, 5-10 parts by weight of hydroxyethyl cellulose, 250-300 parts by weight of an elastic polymer emulsion, 100-150 parts by weight of a colloidal solution, 40-50 parts by weight of an environmentally-friendly inorganic composite pigment, film formation 5-8 parts by weight of the auxiliary agent and 0-4 parts by weight of the pH adjuster; and 3. Finished latex paint: 200-280 parts by weight of the elastic polymer emulsion, 180-250 parts by weight of water, 12-16 parts by weight of the film-forming auxiliary agent , propylene glycol 8-10 parts by weight, antifoaming agent 0.5-1 parts by weight, granules 480-510 parts by weight, water-soluble composite nano anion powder 3-5 parts by weight and alkali swelling thickener 2-3 parts by weight; The granulated lacquer described in the latex finished lacquer is the granulated lacquer after the granulation base lacquer. The nano anion functional water-in-water interior wall paint according to claim 1, wherein the elastic polymer emulsion is an anionic styrene-acrylic polymer emulsion, a pure acrylic polymer emulsion, and a polypropylene elastomer. More than one of the polymer emulsions. The nano-ion-ion functional water-in-oil interior wall paint according to claim 1, wherein the water-soluble composite nano anion powder is two kinds of crystal, quartz, vermiculite, medical stone and tourmaline. Or two or more kinds of nano-sized composite powders prepared by nano-milling. The nano-ion functional water-in-water interior wall paint according to claim 3, wherein the water-soluble composite nano-nano powder has a proportion by weight of nano-crystal powder: nano quartz powder: Nano-fine stone powder: nano medical stone: nano tourmaline = 0-3: 1-3: 0-2: 1-3: 1-5, the nano-sized powder has a particle diameter of 40-100 nm. The nano-ion-ion functional water-in-oil interior wall paint according to claim 1, wherein the environmentally-friendly inorganic composite pigment comprises a composite inorganic pigment CICP, titanium dioxide or a combination thereof. The nano-ion-ion functional water-in-oil interior wall paint according to any one of claims 1 to 5, wherein the crosslinking stabilizer is sodium pyrophosphate, and the protective rubber powder is 矽Lithium magnesiumate. A method for preparing a nano anion functional water-in-oil interior wall paint according to any one of claims 1 to 6, which comprises the following steps: 1. Preparation of a colloidal solution: in the first mixing 90-100 parts by weight of water is added to the container, 2 parts by weight of the crosslinking stabilizer is added under stirring, 7-8 parts by weight of the protective rubber powder is added after dissolution, and the mixture is uniformly stirred; 2. Preparation of granulation base paint: in the second mixing container 400-450 parts by weight of water is added thereto, and 6-10 parts by weight of a wetting dispersing agent, 4-9 parts by weight of an antifoaming agent, 5-8 parts by weight of a film forming aid, 10-15 parts by weight of propylene glycol, and hydroxyethyl group are added under stirring. 5-10 parts by weight of the base cellulose, after stirring into a gel form, 40-50 parts by weight of the environmentally-friendly inorganic composite pigment is added, stirred uniformly, and then ground, and 250-300 parts by weight of the elastic polymer emulsion is added under stirring, and the colloidal solution prepared in the step 1 is added. 100-150 parts by weight, evenly stirred; 3. Granulation process: 100 parts by weight of the colloidal solution is added to the third mixing vessel, and then 100 parts by weight of the granulation base paint is applied, and uniformly granulated by a sieve to form a granule paint. And 4, the preparation of latex finished paint: in the fourth mix 180-250 parts by weight of water is added to the container, 200-280 parts by weight of the elastic polymer emulsion is added under stirring, 12-16 parts by weight of the film-forming auxiliary agent, 3-5 parts by weight of the water-soluble composite nano anion powder, and defoaming are added. 0.5-1 parts by weight of the agent and 8-10 parts by weight of propylene glycol, after stirring uniformly, 480-510 parts by weight of the granulated paint is added, and finally 2-3 parts by weight of the alkali swellable thickener is added to adjust the viscosity of the system. The preparation method according to claim 7, wherein the mixing container is a paint tank, the stirring step is a high-speed variable frequency mixer, and the grinding step is performed on a horizontal sand mill. The preparation method according to claim 7, wherein when the colloidal solution is prepared, the stirring speed is 1000-1500 rpm, and the stirring time is 10-20 minutes after adding the protective rubber powder; when preparing the granulation base paint, The stirring speed is 500-800 rpm, and the rotational speed is 800-1000 rpm when the elastic polymer emulsion is added. When the latex finished lacquer is prepared, the stirring speed is 600-800 rpm. The preparation method according to claim 7, wherein the grinding step is ground to a fineness of ≤ 30 μm, and then transferred to a mixing vessel; the final viscosity of the system is 75 ± 5 ku.