CN113024168A - Stain-resistant wall-ground integrated veneer and preparation method thereof - Google Patents
Stain-resistant wall-ground integrated veneer and preparation method thereof Download PDFInfo
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- CN113024168A CN113024168A CN202110259867.9A CN202110259867A CN113024168A CN 113024168 A CN113024168 A CN 113024168A CN 202110259867 A CN202110259867 A CN 202110259867A CN 113024168 A CN113024168 A CN 113024168A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/5025—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with ceramic materials
- C04B41/5041—Titanium oxide or titanates
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/60—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only artificial stone
- C04B41/61—Coating or impregnation
- C04B41/65—Coating or impregnation with inorganic materials
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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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
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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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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F13/00—Coverings or linings, e.g. for walls or ceilings
- E04F13/07—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
- E04F13/072—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of specially adapted, structured or shaped covering or lining elements
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F13/00—Coverings or linings, e.g. for walls or ceilings
- E04F13/07—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
- E04F13/08—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements
- E04F13/14—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements stone or stone-like materials, e.g. ceramics concrete; of glass or with an outer layer of stone or stone-like materials or glass
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
Abstract
The invention discloses a stain-resistant wall-ground integrated veneer and a preparation method thereof, wherein the veneer is prepared by smearing a stain-resistant coating on the surface of a precast slab, the stain-resistant coating is subjected to reaction, dehydration and condensation through amino on dopamine molecules and carboxyl on graphene oxide to fix the dopamine molecules on the graphene oxide, and then bromooctadecane and phenol on the dopamine are subjected to reaction, dehydration and condensationHydroxyl reacts to ensure that a large amount of long-chain alkyl is grafted on the surface of the graphene, the long-chain alkyl also has a good hydrophobic effect, and when the graphene is illuminated, the stain-resistant coating generates a cavity h+And an electron e‑，e‑Reaction with oxygen to produce O2 ‑Attacking organic molecules, cavities h+Reacts with water to generate-OH, and the two free radicals react together to decompose organic compounds and remove surface stains, thereby achieving the stain resistant effect.
Description
Technical Field
The invention relates to the technical field of veneer preparation, in particular to a stain-resistant wall-ground integrated veneer and a preparation method thereof.
Background
At present, the inorganic veneer mainly uses asbestos as a reinforcing material, but the asbestos has certain harmfulness to human bodies. Along with the improvement of the cognitive level and the life quality of people, the demand of asbestos-free decoration materials is stronger and stronger. Sepiolite is a layer chain silicate mineral, and a layer of magnesium-oxygen octahedron is sandwiched between two layers of silicon-oxygen tetrahedron in the structure to form a 2: I type layered structure unit. The tetrahedral layer is continuous, and the orientation of the active oxygen in the layer is periodically inverted. The octahedral layers form channels arranged alternately in the upper and lower layers. The orientation of the channels is aligned with the fiber axis, allowing water molecules, metal cations, small organic molecules, etc. to enter therein. The sepiolite has good heat resistance, good ion exchange and catalytic properties, excellent corrosion resistance, radiation resistance, insulation, heat insulation and the like, and particularly S1-OH in the structure can directly react with organic matters to generate organic mineral derivatives. The sepiolite has the advantages of good adsorption, thermal stability, corrosion resistance, radiation resistance, heat insulation and the like, and is a good substitute of asbestos.
After the existing veneer is used for a long time, stains can be remained on the surface of the veneer, the veneer is not easy to clean, and the attractiveness of the veneer is greatly reduced.
Disclosure of Invention
The invention aims to provide a stain-resistant wall and floor integrated veneer and a preparation method thereof.
The technical problems to be solved by the invention are as follows:
after the existing veneer is used for a long time, stains can be remained on the surface of the veneer, the veneer is not easy to clean, and the attractiveness of the veneer is greatly reduced.
The purpose of the invention can be realized by the following technical scheme:
a stain-resistant wall-ground integrated veneer is manufactured by the following steps:
step S1: weighing 50-60 parts of diatomite, 10-15 parts of cement, 5-8 parts of silicon powder, 5-8 parts of sepiolite fiber, 10-15 parts of bentonite and 30-40 parts of water in parts by weight;
step S2: adding sepiolite fibers and water into a reaction kettle, and stirring for 30-50min under the condition that the rotating speed is 60-120r/min to prepare foaming fiber pulp;
step S3: uniformly mixing the foaming fiber pulp, diatomite, cement, silicon powder and bentonite, then making a board by pulp flowing, and drying after the thickness is 0.8-1mm to obtain a prefabricated board;
step S4: and (3) performing autoclaved curing on the precast slab for 5-8h under the condition that the pressure intensity is 1-1.5MPa, polishing, smearing a stain-resistant coating, and coating the coating with the thickness of 35-40 mu m to obtain the veneer.
Further, the stain-resistant coating is prepared by the following steps:
step A1: adding tetrabutyl titanate and ethanol into a reaction kettle, stirring for 20-30min under the condition that the rotating speed is 200-300r/min, adding a hydrochloric acid solution, stirring for 30-40min under the condition that the rotating speed is 300-350r/min to prepare a titanium dioxide sol, adding tetraethoxysilane and ethanol into the reaction kettle, stirring for 30-35min under the condition that the rotating speed is 200-300r/min, adding a hydrochloric acid solution, and stirring for 25-30min under the condition that the rotating speed is 350-400r/min to prepare a silicon dioxide sol;
step A2: mixing titanium dioxide sol and silicon dioxide sol to prepare mixed sol, adding heptadecafluorodecyltrimethoxysilane into the mixed sol, stirring for 1-1.5h at the rotation speed of 150-200r/min, the temperature of 60-70 ℃ and the pH value of 8-9, heating to the temperature of 110-120 ℃, and drying to prepare hydrophobic particles;
step A3: adding potassium persulfate, phosphorus pentoxide and concentrated sulfuric acid into a reaction kettle, stirring at the rotation speed of 200-90 ℃ until the potassium persulfate and the phosphorus pentoxide are completely dissolved, adding graphite, continuously stirring for 5-8h, cooling to the temperature of 25-30 ℃, washing with distilled water to neutrality, vacuum drying to obtain pre-oxidized graphite, dissolving the pre-oxidized graphite in the concentrated sulfuric acid, adding potassium permanganate at the temperature of 3-5 ℃, reacting at the temperature of 35-40 ℃ for 2-3h, adding deionized water, standing for 5-10min, adding hydrogen peroxide until the reaction solution is bright yellow, washing with distilled water to neutrality, washing with acetone and concentrated hydrochloric acid for 3 times in sequence, washing again to neutrality, vacuum drying, preparing graphene oxide;
step A4: dispersing the hydrophobic particles prepared in the step A2 in deionized water, adding the graphene oxide prepared in the step A3, performing ultrasonic treatment for 1-1.5h under the condition of the frequency of 5-8MHz, adding a dopamine solution and N, N-dimethylformamide, reacting for 3-5h under the conditions of the rotation speed of 200-300r/min and the temperature of 25-30 ℃, adding bromooctadecane and sodium hydroxide, continuing to react for 4-6h, and distilling at the temperature of 110-120 ℃ to prepare a hydrophobic filler, and dispersing the hydrophobic filler in AB-EP-51 epoxy resin emulsion to prepare the stain-resistant coating.
Further, the volume ratio of the n-butyl titanate, the ethanol and the hydrochloric acid solution in the step A1 is 5:20:4, the volume ratio of the ethyl orthosilicate, the ethanol and the hydrochloric acid solution is 10g:9g:3mL, and the mass fraction of the hydrochloric acid is 20%.
Further, the mass ratio of the titanium dioxide sol to the silicon dioxide sol in the step A2 is 1:1, and the mass of the heptadecafluorodecyltrimethoxysilane is 20% of the mass sum of the titanium dioxide sol and the silicon dioxide sol.
Further, the amount of the potassium persulfate, the phosphorus pentoxide, the concentrated sulfuric acid and the graphite in the step A3 is 1g:1g:4mL:0.5g, the amount ratio of the pre-oxidized graphite to the concentrated sulfuric acid to the potassium permanganate to the deionized water to the hydrogen peroxide is 1g:30mL:4g:47mL:2.8mL, the mass fractions of the concentrated sulfuric acids are 98%, and the mass fraction of the concentrated hydrochloric acid is 38%.
Further, the amount ratio of the hydrophobic particles, the graphene oxide, the dopamine solution, the N, N-dimethylformamide, the bromooctadecane and the sodium hydroxide in the step A4 is 3g to 10g to 50mL to 5mL to 3mL to 2g, and the mass fraction of the dopamine solution is 3-5%.
A preparation method of a stain-resistant wall-ground integrated veneer comprises the following steps:
step S1: weighing 50-60 parts of diatomite, 10-15 parts of cement, 5-8 parts of silicon powder, 5-8 parts of sepiolite fiber, 10-15 parts of bentonite and 30-40 parts of water in parts by weight;
step S2: adding sepiolite fibers and water into a reaction kettle, and stirring for 30-50min under the condition that the rotating speed is 60-120r/min to prepare foaming fiber pulp;
step S3: uniformly mixing the foaming fiber pulp, diatomite, cement, silicon powder and bentonite, then making a board by pulp flowing, and drying after the thickness is 0.8-1mm to obtain a prefabricated board;
step S4: and (3) performing autoclaved curing on the precast slab for 5-8h under the condition that the pressure intensity is 1-1.5MPa, polishing, smearing a stain-resistant coating, and coating the coating with the thickness of 35-40 mu m to obtain the veneer.
The invention has the beneficial effects that: the invention prepares a stain-resistant coating in the process of preparing a stain-resistant wall-ground integrated veneer, the stain-resistant coating takes N-butyl titanate and ethyl orthosilicate as raw materials to prepare titanium dioxide sol and silicon dioxide sol, the titanium dioxide sol and the silicon dioxide sol are mixed and then modified by heptadecafluorodecyl trimethoxy silane to prepare hydrophobic particles, the surface of the hydrophobic particles is grafted with a large amount of heptadecafluorodecyl groups, the heptadecafluorodecyl groups have good hydrophobic effect, then graphite is oxidized to prepare graphene oxide, the graphene oxide and the hydrophobic particles are subjected to ultrasonic treatment, dopamine, N-dimethylformamide, amino on dopamine molecules and carboxyl on the graphene oxide are added to perform reaction dehydration condensation, so that the dopamine molecules are fixed on the graphene oxide, then bromooctadecane reacts with phenolic hydroxyl on the dopamine, the graphene surface is grafted with a large amount of long-chain alkyl, the long-chain alkyl also has a good hydrophobic effect, and when the graphene surface is illuminated by light, the stain-resistant coating generates a cavity h+And an electron e-，e-Reaction with oxygen to produce O2 -Attacking organic molecules, cavities h+Reacts with water to generate-OH, and the two free radicals react together to decompose organic compounds and remove surface stains, thereby achieving the stain resistant effect.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
A stain-resistant wall-ground integrated veneer is manufactured by the following steps:
step S1: weighing 50 parts of diatomite, 10 parts of cement, 5 parts of silicon powder, 5 parts of sepiolite fiber, 10 parts of bentonite and 30 parts of water;
step S2: adding sepiolite fibers and water into a reaction kettle, and stirring for 30min under the condition that the rotating speed is 60r/min to prepare foaming fiber slurry;
step S3: uniformly mixing foamed fiber slurry, diatomite, cement, silicon powder and bentonite, performing slurry flow to prepare a board, and drying after the thickness of the board is 0.8mm to prepare a prefabricated board;
step S4: and (3) carrying out autoclaved curing on the precast slab for 5h under the condition that the pressure is 1MPa, polishing, smearing a stain-resistant coating, and coating the coating with the thickness of 35 mu m to obtain the veneer.
The anti-fouling coating is prepared by the following steps:
step A1: adding tetrabutyl titanate and ethanol into a reaction kettle, stirring for 20min at the rotation speed of 200r/min, adding a hydrochloric acid solution, stirring for 30min at the rotation speed of 300r/min to prepare a titanium dioxide sol, adding tetraethoxysilane and ethanol into the reaction kettle, stirring for 30min at the rotation speed of 200r/min, adding the hydrochloric acid solution, and stirring for 25min at the rotation speed of 350r/min to prepare a silicon dioxide sol;
step A2: mixing titanium dioxide sol and silicon dioxide sol to prepare mixed sol, adding heptadecafluorodecyltrimethoxysilane into the mixed sol, stirring for 1h at the rotation speed of 150r/min, the temperature of 60 ℃ and the pH value of 8, heating to the temperature of 110 ℃, and drying to prepare hydrophobic particles;
step A3: adding potassium persulfate, phosphorus pentoxide and concentrated sulfuric acid into a reaction kettle, stirring at the rotation speed of 200r/min and the temperature of 80 ℃ until the potassium persulfate and the phosphorus pentoxide are completely dissolved, adding graphite, continuously stirring for 5h, cooling to the temperature of 25 ℃, washing with distilled water to be neutral, performing vacuum drying to obtain pre-oxidized graphite, dissolving the pre-oxidized graphite in the concentrated sulfuric acid, adding potassium permanganate at the temperature of 3 ℃, reacting at the temperature of 35 ℃ for 2h, adding deionized water, standing for 5min, adding hydrogen peroxide until the reaction solution is bright yellow, washing with distilled water to be neutral, washing with acetone and concentrated hydrochloric acid for 3 times in sequence, washing again to be neutral, and performing vacuum drying to obtain graphene oxide;
step A4: dispersing the hydrophobic particles prepared in the step A2 in deionized water, adding the graphene oxide prepared in the step A3, performing ultrasonic treatment for 1h under the condition that the frequency is 5MHz, adding a dopamine solution and N, N-dimethylformamide, reacting for 3h under the conditions that the rotating speed is 200r/min and the temperature is 25 ℃, adding bromooctadecane and sodium hydroxide, continuing to react for 4h, distilling under the condition that the temperature is 110 ℃ to prepare a hydrophobic filler, dispersing the hydrophobic filler in AB-EP-51 epoxy resin emulsion, adding an AB-HGF curing agent, and uniformly mixing to prepare the stain-resistant coating.
Example 2
A stain-resistant wall-ground integrated veneer is manufactured by the following steps:
step S1: weighing 55 parts of diatomite, 13 parts of cement, 7 parts of silicon powder, 6 parts of sepiolite fiber, 13 parts of bentonite and 35 parts of water;
step S2: adding sepiolite fibers and water into a reaction kettle, and stirring for 50min under the condition that the rotating speed is 60r/min to prepare foaming fiber slurry;
step S3: uniformly mixing foamed fiber slurry, diatomite, cement, silicon powder and bentonite, performing slurry flow to prepare a board, and drying after the thickness of the board is 0.8mm to prepare a prefabricated board;
step S4: and (3) carrying out autoclaved curing on the precast slab for 5h under the condition that the pressure is 1.5MPa, polishing, smearing a stain-resistant coating, and coating the coating with the thickness of 40 mu m to obtain the veneer.
The anti-fouling coating is prepared by the following steps:
step A1: adding tetrabutyl titanate and ethanol into a reaction kettle, stirring for 30min at the rotation speed of 200r/min, adding a hydrochloric acid solution, stirring for 40min at the rotation speed of 300r/min to prepare a titanium dioxide sol, adding tetraethoxysilane and ethanol into the reaction kettle, stirring for 35min at the rotation speed of 200r/min, adding the hydrochloric acid solution, and stirring for 30min at the rotation speed of 350r/min to prepare a silicon dioxide sol;
step A2: mixing titanium dioxide sol and silicon dioxide sol to obtain mixed sol, adding heptadecafluorodecyltrimethoxysilane into the mixed sol, stirring for 1.5h at the rotation speed of 150r/min, the temperature of 70 ℃ and the pH value of 8, heating to the temperature of 110 ℃, and drying to obtain hydrophobic particles;
step A3: adding potassium persulfate, phosphorus pentoxide and concentrated sulfuric acid into a reaction kettle, stirring at the rotation speed of 300r/min and the temperature of 80 ℃ until the potassium persulfate and the phosphorus pentoxide are completely dissolved, adding graphite, continuously stirring for 8h, cooling to the temperature of 25 ℃, washing with distilled water to be neutral, performing vacuum drying to obtain pre-oxidized graphite, dissolving the pre-oxidized graphite in the concentrated sulfuric acid, adding potassium permanganate at the temperature of 5 ℃, reacting at the temperature of 35 ℃ for 3h, adding deionized water, standing for 5min, adding hydrogen peroxide until the reaction solution is bright yellow, washing with distilled water to be neutral, washing with acetone and concentrated hydrochloric acid for 3 times in sequence, washing again to be neutral, and performing vacuum drying to obtain graphene oxide;
step A4: dispersing the hydrophobic particles prepared in the step A2 in deionized water, adding the graphene oxide prepared in the step A3, performing ultrasonic treatment for 1h under the condition that the frequency is 8MHz, adding a dopamine solution and N, N-dimethylformamide, reacting for 5h under the conditions that the rotating speed is 300r/min and the temperature is 25 ℃, adding bromooctadecane and sodium hydroxide, continuing to react for 4h, distilling under the condition that the temperature is 120 ℃ to prepare a hydrophobic filler, dispersing the hydrophobic filler in AB-EP-51 epoxy resin emulsion, adding an AB-HGF curing agent, and uniformly mixing to prepare the stain-resistant coating.
Example 3
A stain-resistant wall-ground integrated veneer is manufactured by the following steps:
step S1: weighing 60 parts of diatomite, 15 parts of cement, 8 parts of silicon powder, 8 parts of sepiolite fiber, 15 parts of bentonite and 40 parts of water;
step S2: adding sepiolite fibers and water into a reaction kettle, and stirring for 50min under the condition that the rotating speed is 120r/min to prepare foaming fiber pulp;
step S3: uniformly mixing foamed fiber slurry, diatomite, cement, silicon powder and bentonite, then carrying out slurry flow to prepare a board, and drying after the thickness is 1mm to prepare a prefabricated board;
step S4: and (3) carrying out autoclaved curing on the precast slab for 8h under the condition that the pressure is 1.5MPa, polishing, smearing a stain-resistant coating, and coating the coating with the thickness of 40 mu m to obtain the veneer.
The anti-fouling coating is prepared by the following steps:
step A1: adding tetrabutyl titanate and ethanol into a reaction kettle, stirring for 30min at the rotation speed of 300r/min, adding a hydrochloric acid solution, stirring for 40min at the rotation speed of 350r/min to prepare a titanium dioxide sol, adding tetraethoxysilane and ethanol into the reaction kettle, stirring for 35min at the rotation speed of 300r/min, adding the hydrochloric acid solution, and stirring for 30min at the rotation speed of 400r/min to prepare a silicon dioxide sol;
step A2: mixing titanium dioxide sol and silicon dioxide sol to obtain mixed sol, adding heptadecafluorodecyltrimethoxysilane into the mixed sol, stirring for 1.5h at the rotation speed of 200r/min, the temperature of 70 ℃ and the pH value of 9, heating to 120 ℃, and drying to obtain hydrophobic particles;
step A3: adding potassium persulfate, phosphorus pentoxide and concentrated sulfuric acid into a reaction kettle, stirring at the rotation speed of 300r/min and the temperature of 90 ℃ until the potassium persulfate and the phosphorus pentoxide are completely dissolved, adding graphite, continuously stirring for 8h, cooling to the temperature of 30 ℃, washing with distilled water to be neutral, performing vacuum drying to obtain pre-oxidized graphite, dissolving the pre-oxidized graphite in the concentrated sulfuric acid, adding potassium permanganate at the temperature of 5 ℃, reacting at the temperature of 40 ℃ for 3h, adding deionized water, standing for 10min, adding hydrogen peroxide until the reaction solution is bright yellow, washing with distilled water to be neutral, washing with acetone and concentrated hydrochloric acid for 3 times in sequence, washing again to be neutral, and performing vacuum drying to obtain graphene oxide;
step A4: dispersing the hydrophobic particles prepared in the step A2 in deionized water, adding the graphene oxide prepared in the step A3, carrying out ultrasonic treatment for 1.5h under the condition of 8MHz frequency, adding a dopamine solution and N, N-dimethylformamide, reacting for 5h under the conditions of 300r/min rotation speed and 30 ℃, adding bromooctadecane and sodium hydroxide, continuing to react for 6h, distilling under the condition of 120 ℃ to prepare a hydrophobic filler, dispersing the hydrophobic filler in AB-EP-51 epoxy resin emulsion, adding an AB-HGF curing agent, and uniformly mixing to prepare the stain-resistant coating.
Comparative example
The comparative example is a common veneer on the market.
The veneers prepared in examples 1-3 and comparative example were subjected to performance tests, the test results are shown in table 1 below;
the veneers obtained in examples 1 to 3 and comparative example were stored at a temperature of 25 ℃ and a relative humidity of 75% for 500 hours, and the surface fouling resistance was visually observed.
TABLE 1
| Example 1 | Example 2 | Example 3 | Comparative example | |
| Fouling resistance | Completely free of dirt | Completely free of dirt | Completely free of dirt | With dirt |
From table 1 above, it can be seen that the veneers made in examples 1-3 had completely no soil on the surface after the soil resistance test, while the comparative example had soil on the surface, and the invention had very good soil resistance.
The foregoing is merely exemplary and illustrative of the principles of the present invention and various modifications, additions and substitutions of the specific embodiments described herein may be made by those skilled in the art without departing from the principles of the present invention or exceeding the scope of the claims set forth herein.
Claims (7)
1. The utility model provides a resistant dirty type wall ground integrative decorative board which characterized in that: the method comprises the following steps:
step S1: weighing 50-60 parts of diatomite, 10-15 parts of cement, 5-8 parts of silicon powder, 5-8 parts of sepiolite fiber, 10-15 parts of bentonite and 30-40 parts of water in parts by weight;
step S2: adding sepiolite fibers and water into a reaction kettle, and stirring for 30-50min under the condition that the rotating speed is 60-120r/min to prepare foaming fiber pulp;
step S3: uniformly mixing the foaming fiber pulp, diatomite, cement, silicon powder and bentonite, then making a board by pulp flowing, and drying after the thickness is 0.8-1mm to obtain a prefabricated board;
step S4: and (3) performing autoclaved curing on the precast slab for 5-8h under the condition that the pressure intensity is 1-1.5MPa, polishing, smearing a stain-resistant coating, and coating the coating with the thickness of 35-40 mu m to obtain the veneer.
2. The stain-resistant wall and floor integrated veneer according to claim 1, wherein: the anti-fouling coating is prepared by the following steps:
step A1: adding tetrabutyl titanate and ethanol into a reaction kettle, stirring for 20-30min under the condition that the rotating speed is 200-300r/min, adding a hydrochloric acid solution, stirring for 30-40min under the condition that the rotating speed is 300-350r/min to prepare a titanium dioxide sol, adding tetraethoxysilane and ethanol into the reaction kettle, stirring for 30-35min under the condition that the rotating speed is 200-300r/min, adding a hydrochloric acid solution, and stirring for 25-30min under the condition that the rotating speed is 350-400r/min to prepare a silicon dioxide sol;
step A2: mixing titanium dioxide sol and silicon dioxide sol to prepare mixed sol, adding heptadecafluorodecyltrimethoxysilane into the mixed sol, stirring for 1-1.5h at the rotation speed of 150-200r/min, the temperature of 60-70 ℃ and the pH value of 8-9, heating to the temperature of 110-120 ℃, and drying to prepare hydrophobic particles;
step A3: adding potassium persulfate, phosphorus pentoxide and concentrated sulfuric acid into a reaction kettle, stirring at the rotation speed of 200-90 ℃ until the potassium persulfate and the phosphorus pentoxide are completely dissolved, adding graphite, continuously stirring for 5-8h, cooling to the temperature of 25-30 ℃, washing with distilled water to neutrality, vacuum drying to obtain pre-oxidized graphite, dissolving the pre-oxidized graphite in the concentrated sulfuric acid, adding potassium permanganate at the temperature of 3-5 ℃, reacting at the temperature of 35-40 ℃ for 2-3h, adding deionized water, standing for 5-10min, adding hydrogen peroxide until the reaction solution is bright yellow, washing with distilled water to neutrality, washing with acetone and concentrated hydrochloric acid for 3 times in sequence, washing again to neutrality, vacuum drying, preparing graphene oxide;
step A4: dispersing the hydrophobic particles prepared in the step A2 in deionized water, adding the graphene oxide prepared in the step A3, performing ultrasonic treatment for 1-1.5h under the condition of the frequency of 5-8MHz, adding a dopamine solution and N, N-dimethylformamide, reacting for 3-5h under the conditions of the rotation speed of 200-300r/min and the temperature of 25-30 ℃, adding bromooctadecane and sodium hydroxide, continuing to react for 4-6h, and distilling at the temperature of 110-120 ℃ to prepare a hydrophobic filler, and dispersing the hydrophobic filler in AB-EP-51 epoxy resin emulsion to prepare the stain-resistant coating.
3. The integrated veneer for wall and ground resistant to pollution according to claim 2, wherein: the volume ratio of the dosage of the n-butyl titanate, the ethanol and the hydrochloric acid solution in the step A1 is 5:20:4, the dosage ratio of the ethyl orthosilicate, the ethanol and the hydrochloric acid solution is 10g:9g:3mL, and the mass fraction of the hydrochloric acid is 20%.
4. The integrated veneer for wall and ground resistant to pollution according to claim 2, wherein: the mass ratio of the titanium dioxide sol to the silicon dioxide sol in the step A2 is 1:1, and the mass of the heptadecafluorodecyltrimethoxysilane is 20% of the mass sum of the titanium dioxide sol and the silicon dioxide sol.
5. The integrated veneer for wall and ground resistant to pollution according to claim 2, wherein: the amount of the potassium persulfate, the phosphorus pentoxide, the concentrated sulfuric acid and the graphite in the step A3 is 1g:1g:4mL:0.5g, the amount ratio of the pre-oxidized graphite to the concentrated sulfuric acid to the potassium permanganate to the deionized water to the hydrogen peroxide is 1g:30mL:4g:47mL:2.8mL, the mass fractions of the concentrated sulfuric acids are 98%, and the mass fraction of the concentrated hydrochloric acid is 38%.
6. The integrated veneer for wall and ground resistant to pollution according to claim 2, wherein: the dosage ratio of the hydrophobic particles, the graphene oxide, the dopamine solution, the N, N-dimethylformamide, the bromooctadecane and the sodium hydroxide in the step A4 is 3g to 10g to 50mL to 5mL to 3mL to 2g, and the mass fraction of the dopamine solution is 3-5%.
7. The method for preparing a pollution-resistant wall and floor integrated veneer according to claim 2, wherein the method comprises the following steps: the method specifically comprises the following steps:
step S1: weighing 50-60 parts of diatomite, 10-15 parts of cement, 5-8 parts of silicon powder, 5-8 parts of sepiolite fiber, 10-15 parts of bentonite and 30-40 parts of water in parts by weight;
step S2: adding sepiolite fibers and water into a reaction kettle, and stirring for 30-50min under the condition that the rotating speed is 60-120r/min to prepare foaming fiber pulp;
step S3: uniformly mixing the foaming fiber pulp, diatomite, cement, silicon powder and bentonite, then making a board by pulp flowing, and drying after the thickness is 0.8-1mm to obtain a prefabricated board;
step S4: and (3) performing autoclaved curing on the precast slab for 5-8h under the condition that the pressure intensity is 1-1.5MPa, polishing, smearing a stain-resistant coating, and coating the coating with the thickness of 35-40 mu m to obtain the veneer.
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