CN113736295A - Graphene inorganic coating with pearlescent effect and preparation method thereof - Google Patents
Graphene inorganic coating with pearlescent effect and preparation method thereof Download PDFInfo
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- CN113736295A CN113736295A CN202111120006.9A CN202111120006A CN113736295A CN 113736295 A CN113736295 A CN 113736295A CN 202111120006 A CN202111120006 A CN 202111120006A CN 113736295 A CN113736295 A CN 113736295A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
- C09D1/02—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances alkali metal silicates
- C09D1/04—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances alkali metal silicates with organic additives
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/36—Pearl essence, e.g. coatings containing platelet-like pigments for pearl lustre
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
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Abstract
The invention discloses a graphene inorganic coating with a pearlescent effect and a preparation method thereof, belonging to the field of building material coatings and comprising the following components: inorganic resin, a graphene modified anti-formaldehyde auxiliary agent, a multifunctional auxiliary agent, deionized water, a polymer emulsion, a defoaming agent, a dispersing agent, a rheological auxiliary agent, a thickening auxiliary agent, pigment and filler and pearl powder slurry; the invention solves the problems of insufficient formaldehyde removing effect, unstable performance and easy fading of the coating, and the technical problems of insufficient adhesive force and weak environmental protection effect due to the contained free formaldehyde.
Description
Technical Field
The invention belongs to the field of building material coatings, and particularly relates to a graphene inorganic coating with a pearlescent effect and a preparation method thereof.
Background
Formaldehyde is a colorless irritant gas, has an irritant effect on eyes, nose and the like of a human body, and can cause chronic respiratory diseases when the human body is contacted with formaldehyde for a long time, damage can be caused to livers, nervous systems, immune systems and the like, and cancers can be caused under severe conditions. According to the report of the compulsory observation, the average overproof rate of formaldehyde of newly-installed houses in China is nearly 80%, 68% of human diseases are related to indoor air (formaldehyde), 480 thousands of people die of formaldehyde every year, 210 thousands of children are in danger of preventing and controlling the overproof of formaldehyde.
The formaldehyde is hidden in the furniture board such as furniture, floor and wood; formaldehyde is hidden in chemical products such as paint, adhesives and plastic products; the decoration materials such as wallpaper and chemical fiber carpet are hidden with formaldehyde; even daily books and toys may contain formaldehyde; the accumulated water is river, the accumulated water is little and much, and the same is true for formaldehyde. The single material plate is environment-friendly and qualified, but the excessive formaldehyde seems to be inevitable when the multiple building materials are superposed together; this is also the fundamental reason why nearly 80% of home decoration formaldehyde in our country exceeds standard.
Several so-called methods for removing aldehydes are currently known in the art:
1. after the decoration of the house, a plurality of pots of scindapsus aureus are put on the house, and the aldehyde removal efficiency is extremely low.
2. The activated carbon piled in the house can effectively adsorb formaldehyde. (after formaldehyde is adsorbed by the charcoal, when the indoor temperature rises, the adsorbed formaldehyde can be released again by the charcoal, so that the indoor formaldehyde is surged instantly.)
3. The diatom ooze wall surface can also effectively adsorb formaldehyde. (in fact, the substance is similar to the principle of activated carbon, but has larger area, but still releases formaldehyde again after the temperature rises or reaches the maximum amount of self-adsorption.)
4. The titanium dioxide photocatalyst catalyzes and removes aldehyde. The traditional photocatalyst only generates energy level transition under the ultraviolet irradiation condition to decompose harmful substances. And the direct sunlight irradiation time of the indoor space is short, the ultraviolet content is low, and the effective formaldehyde removing effect is difficult to achieve.
Patent application 201310158609.7 discloses a mica and graphene co-modified inorganic coating and a using method thereof, which improves the adhesion and high temperature resistance of the inorganic coating, but only involves adding lower content of mica and graphene, when the content of mica and graphene is increased, the performance of the coating is unstable, and the defects of brittleness, easy cracking and poor adhesion of a coating film still exist. Patent application 201710403471.0 discloses a building interior wall coating and a preparation method thereof, which has formaldehyde removal and aging resistance, but needs to be improved in the aspects of formaldehyde purification effect durability, adhesive force and the like. Based on the current situation, how to provide an interior wall coating with formaldehyde removal, lasting formaldehyde purification effect and improved adhesive force performance is a key point of urgent research in the field.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the coating can remove formaldehyde, has a lasting formaldehyde purification effect, is stable in performance and not prone to fading, is remarkable in adhesive force and washing resistance, does not contain free formaldehyde, can achieve the effects of being safer and more environment-friendly, and has a strong decoration effect.
In order to solve the technical problems, the inventor obtains the technical scheme of the invention through practice and summary, and the invention discloses a graphene inorganic coating with a pearlescent effect, which comprises the following components in parts by weight: 10-30 parts of inorganic resin, 0.05-1 part of graphene modified formaldehyde-resistant additive, 0.05-0.5 part of multifunctional additive, 10-40 parts of deionized water, 5-8 parts of polymer emulsion, 0.05-0.5 part of defoamer, 0.05-1 part of dispersant, 0.05-1 part of rheological additive, 0.1-0.5 part of thickening additive, 30-50 parts of pigment and filler and 10-20 parts of pearl powder slurry;
the preparation method of the graphene modified anti-formaldehyde auxiliary agent comprises the following steps: dispersing the lamellar graphene with the single-layer rate of more than 75% in deionized water by ultrasonic, and adding a surfactant and a coupling agent, wherein the ratio of the graphene to the titanium dioxide is 1-5: 1000, adding nano titanium dioxide, mixing, stirring for 30-50min, dehydrating and drying at 105 ℃ for 8h, and grinding to the fineness of 20-30 microns;
the pigment and filler comprises one or more of titanium dioxide, heavy calcium carbonate, kaolin, talcum powder, superfine calcite powder, diatomite and barium sulfate;
the pearl powder slurry is prepared by the following steps: adding the pearl powder into deionized water, adding the directional arrangement agent accounting for 5 percent of the total weight, and stirring at the rotating speed of 100-200r/min for 10-20min to prepare 20-30 percent of solid pearl powder slurry. Stirring at a low speed, and the surface structure of the pearl powder can be damaged by excessively high stirring speed, so that the pearl effect is reduced. The alignment agent is a common material.
Further, the inorganic resin comprises any one of potassium silicate, lithium silicate and silica sol or is compounded according to a certain proportion.
Further, the multifunctional assistant comprises a multifunctional amine assistant.
Further, the defoaming agent comprises a mineral oil type defoaming agent and/or a silicone type defoaming agent.
Further, the dispersant comprises an ammonium salt dispersant.
Further, the rheological additive comprises one or more of modified organic bentonite, attapulgite, hydroxyethyl cellulose, hydroxymethyl cellulose and methyl hydroxyethyl cellulose, and is mixed with deionized water and stirred for 30-40min under the rotation of 1000r/min at a high speed of 800-.
Further, the thickening aid comprises an associated alkali swelling thickener.
A preparation method of a graphene inorganic coating with a pearlescent effect comprises the following steps:
weighing each component in the formula according to the formula amount, then adding inorganic resin and partial deionized water into a paint mixing cylinder, sequentially adding a dispersing agent, a graphene modified formaldehyde-resistant auxiliary agent and a pigment filler, and performing rotational dispersion for 50-60min at a high speed of 1200-1500r/min, wherein the test fineness is not more than 30 microns;
step two, reducing the rotating speed to 800r/min, adding a defoaming agent, a rheological aid, a polymer emulsion and a multifunctional aid, stirring for 10-15min, and testing the pH value to be not less than 9;
step three, reducing the rotating speed to 200-300r/min, adding the pearl powder slurry, stirring for 10-15min, measuring the initial viscosity, and regulating the viscosity to 25 ℃ by using a thickening auxiliary agent according to the initial viscosity, wherein the stormer viscosity count value is within 85-95KU, so that the graphene inorganic coating with the pearl effect is obtained
Compared with the prior art, the invention can obtain the following technical effects:
1. the inorganic resin is used in a formula in a large amount to replace the conventional polymer emulsion, has the particle size of less than 5 microns and strong permeability, can effectively enter a wall surface substrate, and effectively improves the adhesive force between the coating and a painted surface, so that the coating has obvious effects on water resistance and washing resistance.
2. The inorganic coating provided by the invention has low organic components and no volatile harmful gases such as free formaldehyde, and meanwhile, the addition of the graphene modified formaldehyde-resistant auxiliary agent can remove formaldehyde and has a good formaldehyde purification effect and durability.
3. The inorganic coating does not form a cross-linked network structure, the air permeability of a paint film is good, the wall body and indoor air can freely circulate, the wall skin cannot peel off when being wetted, the paint film has good aging resistance and durability and good air permeability, the contact chance of the graphene modified formaldehyde-resistant auxiliary agent in the paint and the air is improved, and the formaldehyde-removing effect is better than that of the organic coating.
4. The addition of the pearl powder improves the decorative effect of the indoor wall surface, the base material of the pearl powder is mica powder, and the lamellar porous structure of the mica powder can adsorb and lock a large amount of formaldehyde in the wall body, so that the capture capacity of the graphene modified formaldehyde-resistant auxiliary agent on the formaldehyde is improved.
5. The addition of the orientation agent solves the problem of arrangement of the lamellar pearlescent powder, so that the lamellar pearlescent powder is uniformly arranged in the same direction, the attractiveness is improved, a stable interlayer structure can be formed, more places are provided for aldehyde removal reaction, and the aldehyde removal efficiency of the graphene modified formaldehyde-resistant auxiliary agent is improved. The existing microscopic reaction of aldehyde-removing materials is carried out on the surface of granular powder, such as titanium dioxide, heavy calcium carbonate, talcum powder and the like, the specific surface area is small, and the reaction space is small; the method is carried out on the surface of flaky powder, such as mica powder, kaolin, diatomite and the like, and the flaky powder cannot be regularly arranged and alternately stacked, so that aldehyde removal reaction space is wasted, and the reaction efficiency is low;
the addition of the orienting agent promotes the oriented arrangement of the pearl powder of the sheet layers along the same direction, and the nano-scale graphene modified anti-formaldehyde auxiliary agent is deposited between the sheet layers through the layer insertion effect, so that a stable integrated body of adsorption capture, enrichment locking and decomposition removal is formed for formaldehyde, and the formaldehyde removal effect is effectively improved. Tests show that the formaldehyde removing effect of the graphene modified formaldehyde-resistant additive with the same addition amount in the formula is improved by 8-15%.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention adopts an embodiment of the invention, which comprises the following components in parts by weight: 10-30 parts of inorganic resin, 0.05-1 part of graphene modified formaldehyde-resistant additive, 0.05-0.5 part of multifunctional additive, 10-40 parts of deionized water, 5-8 parts of polymer emulsion, 0.05-0.5 part of defoamer, 0.05-1 part of dispersant, 0.05-1 part of rheological additive, 0.1-0.5 part of thickening additive, 30-50 parts of pigment and filler and 10-20 parts of pearl powder slurry;
the inorganic resin is used for replacing the existing common polymer emulsion aiming at the graphene modified formaldehyde-resistant auxiliary agent, the inner diameter of the inorganic resin is smaller than 5 micrometers and smaller than the particle size of the conventional polymer emulsion, so that the inorganic resin particles can effectively enter a wall substrate, the adhesive force between the coating and a painting surface is improved, and meanwhile, the integral water resistance and brushing resistance are also improved due to the improvement of the adhesive force.
Wherein, when the inorganic resin is compounded for use, the common compounding mode can be 1:1, 7:3 or 3:2 of potassium silicate: silica sol, lithium silicate 1:1, 7:3 or 3: 2: silica sol, 2:2:1 potassium silicate: lithium silicate: silica sol, and the like.
The added graphene with high light transmittance can be used as a photocatalytic carrier, so that the efficiency of photocatalytic reaction is improved. In addition, by effectively compounding the graphene and the nano-scale titanium dioxide, the dispersity of photocatalyst nanoparticles on the surface of the graphene is improved, and the photocatalytic activity of the photocatalyst is improved by reducing the recombination of photo-generated electrons and holes.
Meanwhile, due to the adjustment of the energy band structure, the graphene can also play a role of a photosensitizer, so that the absorption range of the photocatalyst is extended to a visible light region, the utilization rate of the photocatalyst to sunlight is effectively improved, and the aldehyde removal efficiency and the durability are improved.
The graphene modified anti-formaldehyde auxiliary agent is added, so that a stable interlayer structure is formed for powder with different particle sizes, a stable attachment point can be provided for the formaldehyde removal reaction, and the absorption of formaldehyde is stable.
Example 1
The invention relates to an embodiment which comprises the following components in parts by weight: 10 parts of inorganic resin, 0.3 part of graphene modified anti-formaldehyde additive, 0.1 part of multifunctional additive, 27.5 parts of deionized water, 5 parts of polymer emulsion, 0.2 part of defoaming agent, 0.3 part of dispersing agent, 1 part of rheological additive, 0.3 part of thickening additive, 45 parts of pigment and filler (15 parts of titanium dioxide, 15 parts of kaolin and 15 parts of barium sulfate) and 10 parts of pearl powder slurry;
the preparation method of the graphene modified anti-formaldehyde auxiliary agent comprises the following steps: dispersing the lamellar graphene with the single-layer rate of more than 75% in deionized water by ultrasonic, and adding a surfactant and a coupling agent, wherein the ratio of the graphene to the titanium dioxide is 1-5: 1000, adding nano titanium dioxide, mixing, stirring for 40min, dehydrating and drying at 105 ℃ for 8h, and grinding to the fineness of 20 microns;
the pearl powder slurry is prepared by the following steps: adding the pearl powder into deionized water, adding a directional arrangement agent accounting for 5 percent of the total weight, and stirring at the rotating speed of 100-200r/min for 10-20min to prepare pearl powder slurry accounting for 20-30 percent of solid content; wherein: the inorganic resin is potassium silicate: the silica sol is prepared in a ratio of 1: 1; the multifunctional assistant is a multifunctional amine assistant, in particular to an American Dow multifunctional assistant AMP-95; the defoaming agent is mineral hydrocarbon defoaming agent SN-373, which has better defoaming effect, and the organic silicon defoaming agent is nonionic alkyl copolymer defoaming agent SN-345, which has better foam inhibition effect; the dispersant is ammonium salt dispersant selected from Corning 5050 or Corning 5040.
The rheological additive is one or more of modified organic bentonite, attapulgite, hydroxyethyl cellulose, hydroxymethyl cellulose and methyl hydroxyethyl cellulose, and is mixed with deionized water and stirred for 30-40min under the rotation of high speed 800-1000r/min to prepare 2-3% water solution.
The thickening auxiliary agent is associated alkali swelling thickener, and has a model of RHEOLATE 150.
A preparation method of a graphene inorganic coating with a pearlescent effect comprises the following steps:
weighing each component in the formula according to the formula amount, then adding inorganic resin and part of deionized water into a paint mixing cylinder, sequentially adding a dispersing agent, a graphene modified anti-formaldehyde auxiliary agent and a pigment filler, and rotationally dispersing for 55min at a high speed of 1200r/min, wherein the test fineness is 30 micrometers;
step two, reducing the rotating speed to 800r/min, adding a defoaming agent, a rheological additive, a polymer emulsion and a multifunctional additive, stirring for 15min, and testing the pH value to be 9;
and step three, reducing the rotating speed to 300r/min, adding the pearl powder slurry, stirring for 10min, measuring the initial viscosity of 80KU, adding a thickening aid of 0.3 according to the initial viscosity, and adjusting the viscosity to be 25 ℃ to complete the adjustment within 86KU through a stormer viscosity counting value, thereby obtaining the graphene inorganic coating with the pearl effect.
Example 2
One embodiment of the present invention, the preparation method is the same as example 1, except that the components are: 20 parts of inorganic resin, 0.2 part of graphene modified anti-formaldehyde additive, 0.3 part of multifunctional additive, 18.4 parts of deionized water, 5 parts of polymer emulsion, 0.3 part of defoaming agent, 0.2 part of dispersant, 0.1 part of rheological additive, 0.5 part of thickening additive, 40 parts of pigment and filler (10 parts of titanium dioxide and 10 parts of kaolin, 20 parts of Murray heavy calcium carbonate) and 15 parts of pearl powder slurry; the inorganic resin is potassium silicate: the silica sol was in a 1:1 configuration.
Example 3
One embodiment of the present invention, the preparation method is the same as example 1, except that the components are: 20 parts of inorganic resin, 1 part of graphene modified anti-formaldehyde additive, 0.5 part of multifunctional additive, 18.4 parts of deionized water, 8 parts of polymer emulsion, 0.5 part of defoaming agent, 0.5 part of dispersing agent, 1 part of rheological additive, 0.2 part of thickening additive, 45 parts of pigment and filler (5 parts of titanium dioxide, 15 parts of talcum powder, 5 parts of diatomite and 20 parts of heavy calcium carbonate) and 15 parts of pearl powder slurry; the inorganic resin is potassium silicate: the silica sol was in a 1:1 configuration.
Comparative example
One embodiment of the present invention, with reference to conventional manufacturing methods, differs in that it comprises the following components: 10-30 parts of inorganic resin, 1 part of graphene modified formaldehyde-resistant additive, 0.3 part of multifunctional additive, 10-40 parts of deionized water, 30 parts of polymer emulsion, 0.2 part of bactericide, 0.2 part of defoamer, 0.5 part of dispersant, 0.3 part of rheological additive, 0.5 part of thickening additive and 47 parts of pigment and filler (titanium dioxide 22 and calcium carbonate 25 parts);
performance testing
The effects of the interior wall coatings provided in examples 1 to 3 and a comparative example and a commercially available aldehyde-removing paint of a certain brand are detected, wherein the formaldehyde purification rate test method executes the type I requirements specified by JC/T1074-2008 'indoor air purification function coating material purification function', the top grade requirements of the finish paint specified by GB/T9756-.
TABLE 1 examination table of interior wall coating materials provided according to examples 1-3 and comparative examples and commercially available aldehyde-removing paints of certain brands
As can be seen from the results in table 1, compared with the organic polymer interior wall coating provided by the comparative example and the commercially available organic aldehyde-removing paint, the graphene inorganic coating with pearlescent effect provided by the embodiment of the present invention has unique superiority in alkali resistance and scrub resistance, and simultaneously, because the environment-friendly inorganic material is used and the organic synthetic material is not contained, the coating does not contain volatile organic compounds and free formaldehyde, and thus, the effects of safety and environmental protection can be achieved.
Claims (10)
1. The graphene inorganic coating with the pearlescent effect is characterized by comprising the following components in parts by mass: 10-30 parts of inorganic resin, 0.05-1 part of graphene modified formaldehyde-resistant additive, 0.05-0.5 part of multifunctional additive, 10-40 parts of deionized water, 5-8 parts of polymer emulsion, 0.05-0.5 part of defoaming agent, 0.05-1 part of dispersing agent, 0.05-1 part of rheological additive, 0.1-0.5 part of thickening additive, 30-50 parts of pigment and filler and 10-20 parts of pearlescent powder slurry.
2. The graphene inorganic paint with pearlescent effect according to claim 1, wherein: the preparation method of the graphene modified anti-formaldehyde auxiliary agent comprises the following steps: dispersing the lamellar graphene with the single-layer rate of more than 75% in deionized water by ultrasonic, and adding a surfactant and a coupling agent, wherein the ratio of the graphene to the titanium dioxide is 1-5: 1000, adding nano titanium dioxide, mixing, stirring for 30-50min, dehydrating and drying at 105 ℃ for 8h, and grinding to the fineness of 20-30 microns.
3. The graphene inorganic paint with pearlescent effect according to claim 1, wherein: the pigment and filler comprises one or more of titanium dioxide, heavy calcium carbonate, kaolin, talcum powder, superfine calcite powder, diatomite and barium sulfate.
4. The graphene inorganic paint with pearlescent effect according to claim 1, wherein: the pearl powder slurry is prepared by the following steps: adding the pearl powder into deionized water, adding the directional arrangement agent accounting for 5 percent of the total weight, and stirring at the rotating speed of 100-200r/min for 10-20min to prepare 20-30 percent of solid pearl powder slurry.
5. The graphene inorganic paint with pearlescent effect according to claim 1, wherein: the inorganic resin comprises any one of potassium silicate, lithium silicate and silica sol or is compounded according to a certain proportion.
6. The graphene inorganic paint with pearlescent effect according to claim 1, wherein: the multifunctional auxiliary agent comprises a multifunctional amine auxiliary agent.
7. The graphene inorganic paint with pearlescent effect according to claim 1, wherein: the defoaming agent comprises a mineral oil defoaming agent and/or a silicone defoaming agent.
8. The graphene inorganic paint with pearlescent effect according to claim 1, wherein: the rheological additive comprises one or more of modified organic bentonite, attapulgite, hydroxyethyl cellulose, hydroxymethyl cellulose and methyl hydroxyethyl cellulose, and is mixed with deionized water, stirred for 30-40min under the rotation of 1000r/min at high speed of 800-.
9. The graphene inorganic paint with pearlescent effect according to claim 1, wherein: the thickening auxiliary agent comprises an associated alkali swelling thickener; the dispersant comprises an ammonium salt dispersant.
10. The preparation method of the graphene inorganic coating with the pearlescent effect according to any one of claims 1 to 9, comprising the following steps:
the first step,
Weighing the components in the formula according to the formula ratio, adding the inorganic resin and part of deionized water into a paint mixing cylinder, sequentially adding the dispersing agent, the graphene modified formaldehyde-resistant additive and the pigment filler, and rotationally dispersing for 50-60min at a high speed of 1200-1500r/min, wherein the test fineness is not more than 30 microns;
step two,
Reducing the rotating speed to 800r/min, adding the defoaming agent, the rheological additive, the polymer emulsion and the multifunctional additive, stirring for 10-15min, and testing the pH value to be not less than 9;
step three,
Reducing the rotating speed to 200-300r/min, adding the pearl powder slurry, stirring for 10-15min, measuring the initial viscosity, and regulating the viscosity to 25 ℃ by using the thickening auxiliary agent according to the initial viscosity, wherein the stormer viscosity count value is 85-95KU, thereby obtaining the graphene inorganic coating with the pearl effect.
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