CN110669395B - Marble-like decorative material and preparation method thereof - Google Patents

Marble-like decorative material and preparation method thereof Download PDF

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CN110669395B
CN110669395B CN201910928184.0A CN201910928184A CN110669395B CN 110669395 B CN110669395 B CN 110669395B CN 201910928184 A CN201910928184 A CN 201910928184A CN 110669395 B CN110669395 B CN 110669395B
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decorative material
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CN110669395A (en
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郑昌瑞
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Nanjing Zhongya Technology Co ltd
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Nanjing Zhongya Heavy Industry Machinery Co ltd
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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING 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
    • C09D143/00Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing boron, silicon, phosphorus, selenium, tellurium, or a metal; Coating compositions based on derivatives of such polymers
    • C09D143/04Homopolymers or copolymers of monomers containing silicon
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING 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
    • C09D7/00Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40Additives
    • C09D7/60Additives non-macromolecular
    • C09D7/61Additives non-macromolecular inorganic
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING 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
    • C09D7/00Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40Additives
    • C09D7/65Additives macromolecular
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/02Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/03Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
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  • Inorganic Chemistry (AREA)
  • Paints Or Removers (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

The invention relates to a marble-imitated decorative material and a preparation method thereof, wherein the decorative material comprises 50-60 parts by weight of protective glue and 100-120 parts by weight of base paint, and further comprises hardening emulsion, wherein the hardening emulsion comprises the following components in parts by weight: 30-35 parts of silicone-acrylic emulsion, 20-25 parts of potassium silicate sol, 5-10 parts of quaternary ammonium alkyl etherified starch, 10-15 parts of hydroxypropyl methyl cellulose, 3-7 parts of pottery clay and 1-3 parts of cationic dispersant; according to the application, the silicone-acrylic emulsion and the potassium silicate sol are used as a main mixing body, the quaternary ammonium alkyl etherified starch and the argil are added, the silicone-acrylic emulsion and the potassium silicate sol generate a synergistic effect, the adhesion of the hardening emulsion can be improved, when a large amount of sand exists, the hardening emulsion can be attached to the surface of the sand, the compactness of a coating during film forming is improved, and the hardness of the marble-like decorative material is improved.

Description

Marble-like decorative material and preparation method thereof
Technical Field
The invention relates to the technical field of decorative materials, in particular to a marble-imitated decorative material and a preparation method thereof.
Background
With the increasing living standard of people, the outer wall of the building adopts more and more high-grade decorative materials; the marble-imitated decorative material is one of the marble-imitated decorative materials, can play a good marble-imitated decorative effect when being sprayed on the outer wall of a building, and also has excellent anti-cracking performance and good flexibility, so that the marble-imitated decorative material can effectively cover fine cracks on the wall surface and keep the coating firm and smooth; the super-strong self-cleaning function can enable the architectural decoration wall surface to be as new as long as possible, the super-strong weather resistance has stronger adaptability and resistance no matter in a common environment or an acid rain erosion resistant environment, the service life is longer, the construction period is short, the process is simple, and compared with natural marble, the cost is lower, so the marble-imitated decoration material has great attention.
At present, the Chinese patent with application publication number CN104387981A discloses a preparation method of a marble-imitated coating and application thereof in construction, wherein a protective adhesive and a base paint are respectively prepared, and then the protective adhesive and the base paint are uniformly mixed according to a proportion to be prepared into various colors similar to a rough-surface marble, so that the marble-imitated coating is obtained, the simulation degree is high, the waste of stone resources can be reduced, and the construction is convenient.
However, the existing marble-imitated decorative material can still be scratched by a fingernail after construction for three days because the selected emulsion is improper, when the colorful stone-imitated coating is prepared, the emulsion which is the same as that for preparing common emulsion paint is adopted, and the coating is not compact enough due to the existence of a large amount of gravels during film forming, so that the hardness of the marble-imitated decorative material is lower.
Disclosure of Invention
The invention aims to provide a marble-imitated decorative material and a preparation method thereof, which are beneficial to improving the compactness of a coating during film forming, thereby improving the hardness of the marble-imitated decorative material.
The above object of the present invention is achieved by the following technical solutions:
the marble-imitated decorative material comprises 50-60 parts by weight of protective adhesive and 100-120 parts by weight of base paint, and further comprises hardening emulsion, wherein the hardening emulsion comprises the following components in parts by weight: 30-35 parts of silicone-acrylic emulsion, 20-25 parts of potassium silicate sol, 5-10 parts of quaternary ammonium alkyl etherified starch, 10-15 parts of hydroxypropyl methyl cellulose, 3-7 parts of pottery clay and 1-3 parts of cationic dispersant.
By adopting the technical scheme, the silicone-acrylic emulsion is a water-based emulsion formed by graft copolymerization of acrylate and an organic silicon monomer, and a formed film has the characteristics of higher glossiness, better salt spray resistance, alkali resistance, corrosion resistance, strong adhesive force, good water resistance, excellent weather resistance and the like, and can be used for anticorrosive materials of metal materials, metal paints, waterproof coatings, finish paints of various coatings, high-grade exterior wall paints and the like; the potassium silicate sol has excellent viscosity, can assist the silicone-acrylate emulsion to improve the film forming property, and in addition, the potassium silicate sol and the silicone-acrylate emulsion are subjected to hydrogen bond association, so that the hardness during film forming can be obviously improved; the quaternary ammonium alkyl etherified starch plays a role of an ion bridge in the decorative material, and has better fluidity, dispersibility, dissolubility, paste transparency, paste viscosity stability and lower gelatinization temperature compared with common starch; the hydroxypropyl methyl cellulose is white granular powder, is dissolved in water, and the aqueous solution has the characteristics of surface activity, high transparency and the like, and also has thickening capacity, excellent moldability, dispersibility and cohesiveness; the pottery clay contains a large amount of mineral components, such as hydromica, kaolinite, montmorillonite, quartz, feldspar and the like, and the components are mixed together to ensure that the pottery clay has the properties similar to those of clay, is light gray, yellow and purple, has moderate water absorption and adsorbability, and has good drying property and sintering property, and in addition, the pottery clay also has good freeze-thaw resistance and good light pollution resistance; according to the application, the silicone-acrylic emulsion and the potassium silicate sol are used as a main mixing body, the quaternary ammonium alkyl etherified starch and the argil are added, the silicone-acrylic emulsion and the potassium silicate sol generate a synergistic effect, the adhesion of the hardening emulsion can be improved, when a large amount of sand exists, the hardening emulsion can be attached to the surface of the sand, the compactness of a coating during film forming is improved, and the hardness of the marble-like decorative material is improved.
The invention is further configured to: the viscosity of the silicone-acrylic emulsion is 1500-2000 mpa · s.
By adopting the technical scheme, the viscosity of the silicone-acrylic emulsion is limited to be 1500-2000 mpa & s, if the viscosity of the silicone-acrylic emulsion is less than 1500mpa & s, the viscosity of the silicone-acrylic emulsion is too thin, a large amount of sand stones cannot be bonded during film forming, if the viscosity of the silicone-acrylic emulsion is more than 2000mpa & s, the fluidity of the silicone-acrylic emulsion is poor, the silicone-acrylic emulsion is not beneficial to being uniformly mixed with potassium silicate sol and other fillers, the processing difficulty and the subsequent spraying difficulty are improved, and the viscosity is preferably 1500-2000 mpa & s in terms of the product performance and the processing difficulty of the comprehensive decorative material.
The invention is further configured that the preparation method of the potassium silicate sol comprises the following steps:
putting 40-50 parts by weight of inorganic silica sol into a reactor, and adjusting the temperature to 65-75 ℃;
under the condition of stirring, adding 10-15 parts by weight of potassium hydroxide and 20-25 parts by weight of deionized water, and carrying out mixed reaction for 30-40 min; and adding 5-10 parts by weight of polyhydroxy cage type silsesquioxane, raising the temperature to 75-80 ℃, and stirring for 6-8 hours to obtain the potassium silicate sol.
By adopting the technical scheme, firstly, inorganic silica sol is dissolved, then potassium hydroxide and deionized water are added into the inorganic silica sol to form potassium silicate solution, then polyhydroxy cage type silsesquioxane is added, and the mixture is stirred for 6-8 hours at 75-80 ℃ to obtain the potassium silicate sol, wherein the potassium silicate sol contains a large amount of hydroxyl groups and has high reaction activity, and when the potassium silicate sol is blended with silicone-acrylic emulsion, hydrogen bond association is easy to occur, so that the hardness of the silicone-acrylic emulsion during film forming is improved.
The invention is further configured to: the polyhydroxy cage type silsesquioxane is preferably octahydroxyl cage type silsesquioxane or hexadecydroxy cage type silsesquioxane.
By adopting the technical scheme, the cage-type silsesquioxane is a substance containing an inorganic-organic mixed structure, comprises a polyhedral silicon-oxygen nanostructure framework, has a cage-type molecule and an organic substituent group in the molecule, can ensure good compatibility with organic emulsion, is selected from the cage-type silsesquioxane with octahydroxyl or hexadecoxyl, has a neat symmetrical structure, reduces the polarity of the cage-type silsesquioxane, is beneficial to the cage-type silsesquioxane to be uniformly dispersed in potassium silicate solution, further generates a thickening effect, and forms potassium silicate sol.
The invention is further configured to: the degree of substitution of the quaternary ammonium alkyl etherified starch is 0.08-0.3.
By adopting the technical scheme, the quaternary ammonium alkyl etherified starch is selected, so that the cationic electropositivity of the starch is utilized, the higher the cationic substitution degree of the quaternary ammonium alkyl etherified starch is, the more electronegative substances can be adsorbed by the quaternary ammonium alkyl etherified starch with the same dosage, but the higher the substitution degree is, the more difficult the production is, and the higher the corresponding cost is, so that a balance point with the optimal proportion is sought, and the substitution degree of the quaternary ammonium alkyl etherified starch in the application is preferably selected from 0.08-0.3.
The invention is further configured to: the argil needs to be pretreated, 0.5-2 parts of hydroxyl silicone oil is added into the argil, and stirring is carried out for 30-40 min for later use.
By adopting the technical scheme, the argil needs to be pretreated before forming, and the decorative material contains the silicone-acrylic emulsion and the potassium silicate sol, and the hydroxyl silicone oil is added into the argil, so that the surface of the argil is favorably subjected to silicon-based treatment, and the compatibility of the argil in the decorative material is improved.
The second aim of the invention is realized by the following technical scheme:
the preparation method of the imitation marble decorative material comprises the following steps:
(1) preparing a hardening emulsion: a) adding potassium silicate sol into the silicone-acrylate emulsion, controlling the temperature to be 45-55 ℃, and keeping stirring until the mixture is uniformly mixed to obtain a mixed main body; b) adding quaternary ammonium alkyl etherified starch, argil and a cationic dispersant into the mixed main body, and uniformly stirring; c) adding hydroxypropyl methyl cellulose, and uniformly stirring to obtain hardening emulsion;
(2) mixing the protective adhesive with the base paint, and stirring for 20-30 min;
(3) adding the hardening emulsion and water according to the weight ratio of 2-3: 1, and uniformly stirring to obtain the marble-imitated decorative material.
By adopting the technical scheme, the hardening emulsion is added into the protective adhesive and the base paint, has excellent adhesion, can be attached to the surface of sand stone when a large amount of sand stone exists, improves the film-forming compactness of the sprayed coating and further improves the hardness of the decorative material; the ratio of the hardening emulsion to the water is preferably 2-3: 1, so that the hardening emulsion is prevented from being diluted, and the hardening emulsion is kept at proper viscosity.
The invention is further configured to: and (2) placing the hardening emulsion in the step (1) into a ball mill for ball milling, wherein the viscosity of the hardening emulsion after ball milling is 2500-4000 mpa · s.
By adopting the technical scheme, after the preparation of the hardening emulsion is finished, the hardening emulsion is subjected to ball milling and grinding again before use, so that the specific surface area of the hardening emulsion is favorably improved, and the viscosity of the hardening emulsion is further improved.
In conclusion, the beneficial technical effects of the invention are as follows:
1. the hardness is high: according to the method, the silicone-acrylic emulsion and the potassium silicate sol are taken as a main mixing body, the quaternary ammonium alkyl etherified starch and the argil are added, the silicone-acrylic emulsion and the potassium silicate sol generate a synergistic effect, the adhesion of the hardening emulsion can be improved, when a large amount of sand exists, the hardening emulsion can be attached to the surface of the sand, the compactness of a coating during film forming can be improved, and the hardness of the marble-like decorative material can be improved;
2. the polyhydroxy cage type silsesquioxane is added into the potassium silicate solution to prepare the potassium silicate sol, has higher reaction activity, is easy to generate hydrogen bond association when being blended with the silicone-acrylic emulsion, and is beneficial to improving the hardness of the silicone-acrylic emulsion during film forming;
3. when the quaternary ammonium alkyl etherified starch and the argil are compounded, the viscosity is strong, and a cationic dispersing agent is added, so that a good dispersing effect can be achieved;
4. the viscosity of the prepared hardening emulsion is kept between 2500-4000 mpa · s, which is beneficial to the mixing and dissolution of the hardening emulsion, the protective adhesive and the base paint, thereby ensuring the compactness of the decorative material during film forming;
5. convenient construction, quick drying and high film forming hardness.
Detailed Description
The present invention will be described in further detail with reference to examples.
The inorganic silica sol is JA-25 type silica sol produced by Shandong Xinhua silica gel Co.
The silicone-acrylate emulsion is produced by basf, and the viscosity is 1500-2000 mpa & s.
The quaternary ammonium alkyl etherified starch is prepared by the method mentioned in "preparation and property research of wheat quaternary ammonium alkyl ether starch" published by industrial university in Henan province.
The pottery clay is prepared from clay for adhesive material produced by processing factory of boulder mineral products in Lingshou county, Hebei, with a product number of js-tt.
The cationic dispersant is polyacrylamide cationic dispersant produced by Henan Zhengyuan chemical Co., Ltd, and has a molecular weight of 1200 ten thousand.
The protective adhesive adopts Chinese patent with application publication number CN104387981A, and discloses the protective adhesive recorded in the embodiment 2 in the preparation method of the marble-imitated coating, and the preparation process comprises the following steps: adding 900 parts of water into a dispersion cylinder, regulating the rotating speed to 350r/min, adding protective rubber powder, dispersing for 0.8h, adding 0.5 part of preservative, and uniformly stirring to obtain protective rubber; wherein the protective rubber powder is C512 protective rubber powder produced by Guangzhou Shengxin chemical technology limited company, and the preservative is preservative M30.
The base paint adopts Chinese patent with application publication number CN104387981A, and discloses the base paint recorded in the embodiment 2 in the preparation method of the marble-imitated coating, and the preparation process comprises the following steps: adding 100 parts of water into a dispersion cylinder, adjusting the rotating speed to 250r/min, sequentially adding 10 parts of ethylene glycol, 3 parts of defoaming agent, 4.5 parts of dispersing agent, 1.2 parts of wetting agent, 1 part of ammonia water, 45 parts of kaolin, 45 parts of heavy calcium powder, 30 parts of titanium dioxide and 1.2 parts of cellulose, adjusting the rotating speed to 500r/min, and dispersing for 40 min; adding 200 parts of emulsion, 11 parts of film forming additive, 5 parts of cellulose and 330 parts of water, and dispersing for 30 min; adding 160 parts of protective glue, and dispersing for 70 min; then adding 2.5 parts of preservative and 2.5 parts of mildew preventive, and uniformly stirring to obtain base paint; wherein the dispersant is sodium dodecyl sulfate, the defoamer is NXZ produced by BASF, the wetting agent is BF-05, the emulsion is silicone-acrylate emulsion with solid content of 48%, and the film-forming assistant is dodecanol of Istman.
Preparation of raw materials example one:
a potassium silicate sol is prepared by the following method:
(1) putting 40 parts by weight of inorganic silica sol into a reactor, and adjusting the temperature to 65 ℃;
(2) under the condition of stirring, adding 10 parts by weight of potassium hydroxide and 20 parts by weight of deionized water, and mixing and reacting for 30 min;
(3) adding 5 weight parts of octahydroxyl cage type silsesquioxane, raising the temperature to 75 ℃, and stirring for 6 hours to obtain the potassium silicate sol.
Preparation example two of raw materials:
a potassium silicate sol is prepared by the following method:
(1) putting 45 parts by weight of inorganic silica sol into a reactor, and adjusting the temperature to 70 ℃;
(2) under the condition of stirring, adding 13 parts by weight of potassium hydroxide and 23 parts by weight of deionized water, and mixing and reacting for 35 min;
(3) adding 8 parts by weight of octahydroxyl cage type silsesquioxane, raising the temperature to 78 ℃, and stirring for 7 hours to obtain the potassium silicate sol.
Preparation example three of raw materials:
a potassium silicate sol is prepared by the following method:
(1) 50 parts by weight of inorganic silica sol is put into a reactor, and the temperature is adjusted to 70 ℃;
(2) under the condition of stirring, adding 15 parts by weight of potassium hydroxide and 25 parts by weight of deionized water, and mixing and reacting for 40 min;
(3) adding 10 parts by weight of hexadecyl hydroxyl cage type silsesquioxane, raising the temperature to 75 ℃, and stirring for 6 hours to obtain the potassium silicate sol.
Preparation example four of raw materials:
a potassium silicate sol is prepared by the following method:
(1) 50 parts by weight of inorganic silica sol is put into a reactor, and the temperature is adjusted to 75 ℃;
(2) under the condition of stirring, adding 15 parts by weight of potassium hydroxide and 25 parts by weight of deionized water, and mixing and reacting for 40 min;
(3) adding 10 parts by weight of hexadecyl hydroxyl cage type silsesquioxane, raising the temperature to 80 ℃, and stirring for 8 hours to obtain the potassium silicate sol.
The first embodiment is as follows:
the marble-imitated decorative material is prepared by the following method:
(1) preparing materials: weighing 50 parts of protective adhesive, 100 parts of base paint, 30 parts of silicone-acrylic emulsion, 20 parts of potassium silicate sol prepared in the first raw material preparation example, 5 parts of quaternary ammonium alkyl etherified starch, 10 parts of hydroxypropyl methyl cellulose, 3 parts of pottery clay and 1 part of cationic dispersant according to parts by weight;
(2) preparing a hardening emulsion: a) adding potassium silicate sol into the silicone-acrylate emulsion, controlling the temperature at 45 ℃, and keeping stirring until the mixture is uniformly mixed to obtain a mixed main body; b) adding quaternary ammonium alkyl etherified starch, argil and a cationic dispersant into the mixed main body, and uniformly stirring; c) adding hydroxypropyl methyl cellulose, and uniformly stirring to obtain hardening emulsion;
(3) mixing the protective adhesive with the base paint, and stirring for 20 min;
(4) adding the hardening emulsion and water according to the weight ratio of 2:1, and uniformly stirring to obtain the marble-imitated decorative material.
Example two:
a marble-imitated decorative material is different from the first embodiment in that the potassium silicate sol is prepared by the second raw material preparation example.
Example three:
a marble-imitated decorative material is different from the first embodiment in that potassium silicate sol is prepared by the third raw material preparation example.
Example four:
a marble-imitated decorative material is different from the first embodiment in that potassium silicate sol is prepared by the fourth raw material preparation example.
Example five:
the marble-imitated decorative material is prepared by the following method:
(1) preparing materials: 55 parts of protective adhesive, 110 parts of base paint, 32 parts of silicone-acrylic emulsion, 23 parts of potassium silicate sol of raw material preparation example III, 7 parts of quaternary ammonium alkyl etherified starch, 12 parts of hydroxypropyl methyl cellulose, 5 parts of pottery clay and 2 parts of cationic dispersant are weighed according to parts by weight;
(2) preparing a hardening emulsion: a) adding potassium silicate sol into the silicone-acrylate emulsion, controlling the temperature to be 45-55 ℃, and keeping stirring until the mixture is uniformly mixed to obtain a mixed main body; b) adding quaternary ammonium alkyl etherified starch, argil and a cationic dispersant into the mixed main body, and uniformly stirring; c) adding hydroxypropyl methyl cellulose, and uniformly stirring to obtain hardening emulsion;
(3) mixing the protective adhesive with the base paint, and stirring for 25 min;
(4) adding the hardening emulsion and water according to the weight ratio of 2:1, and uniformly stirring to obtain the marble-imitated decorative material.
Example six:
the marble-imitated decorative material is prepared by the following method:
(1) preparing materials: weighing 60 parts of protective adhesive, 120 parts of base paint, 35 parts of silicone-acrylic emulsion, 25 parts of potassium silicate sol of raw material preparation example III, 10 parts of quaternary ammonium alkyl etherified starch, 15 parts of hydroxypropyl methyl cellulose, 7 parts of pottery clay and 3 parts of cationic dispersant according to parts by weight;
(2) preparing a hardening emulsion: a) adding potassium silicate sol into the silicone-acrylate emulsion, controlling the temperature at 55 ℃, and keeping stirring until the mixture is uniformly mixed to obtain a mixed main body; b) adding quaternary ammonium alkyl etherified starch, argil and a cationic dispersant into the mixed main body, and uniformly stirring; c) adding hydroxypropyl methyl cellulose, and uniformly stirring to obtain hardening emulsion;
(3) mixing the protective adhesive with the base paint, and stirring for 30 min;
(4) adding the hardening emulsion and water according to the weight ratio of 3:1, and uniformly stirring to obtain the marble-imitated decorative material.
Example seven:
a marble-imitated decorative material is different from the fifth embodiment in that argil in the step (1) is pretreated, 0.5-2 parts of hydroxyl silicone oil is added into the argil, and the mixture is stirred for 30-40 min for later use.
Example eight:
the marble-imitated decorative material is different from the fifth embodiment in that the hardening emulsion prepared in the step (2) is placed in a ball mill for ball milling, and the viscosity of the hardening emulsion after ball milling is 2500-4000 mpa · s for later use.
Comparative example one: example 2 of an artificial marble paint was disclosed as a first comparative example in chinese patent application publication No. CN 104387981A.
Comparative example two:
an imitation marble decorative material, which is different from the fifth embodiment in that potassium silicate sol is absent.
Comparative example three:
an imitation marble decorative material, which is different from the fifth embodiment in that silicone-acrylic emulsion is absent.
Comparative example four:
a marble-like decorative material is different from the fifth embodiment in that quaternary ammonium alkyl etherified starch is absent.
Comparative example five:
a marble-imitated decorative material is different from the fifth embodiment in that pottery clay is absent.
Comparative example six:
a marble-like decorative material is different from the fifth embodiment in that quaternary ammonium alkyl etherified starch and pottery clay are absent.
The detection means is as follows:
(1) appearance of the coating film: the sample is brushed on the surface of the test plate by a brush, the wet film thickness is about 120 mu m, the long side of the test plate is erected at about 85 degrees and placed, after 24h, the coating film is observed, if no pin hole or sagging exists, the coating film is uniform, and the appearance of the coating film is judged to be normal.
(2) Coating hardness: preparing an iron sheet with the size of 50 multiplied by 100cm, firstly polishing the iron sheet by fine abrasive paper, then scrubbing the surface of the iron sheet by alcohol or acetone, uniformly spraying decorative materials to be detected on the iron sheet with the thickness of 3mm, observing whether the scratch is removed by using a nail after construction for 6h, 12h, 24h, 48h and 36h, and recording the hardness by using a pencil hardness meter if the scratch is not removed.
Figure BDA0002219486440000071
As can be seen from the above table, by using the decorative material of the embodiment of the present application, the silicone-acrylic emulsion and the potassium silicate sol are used as the main mixture, the quaternary ammonium alkyl etherified starch and the pottery clay form a complex formulation, and the decorative coating is formed by spraying construction, and has a higher hardness, after 6 hours of construction, the decorative coating is fixed by nails, and the tested hardness is above the H level, so that compared with the common exterior wall paint of the first comparative example, the decorative material has a faster curing speed, and a higher hardness after curing; as can be seen from the examples, the second comparative example and the third comparative example, the silicone-acrylic emulsion and the potassium silicate sol are used as the main mixture, so that the film forming compactness is excellent, and the hardness of the decorative material after film forming is improved; as can be seen from the examples and the fourth to sixth comparative examples, the quaternary ammonium alkyl etherified starch and the argil generate a compounding effect, and the hardness of the decorative material during film forming can be obviously improved.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims (6)

1. The marble-imitated decorative material comprises 50-60 parts by weight of protective adhesive and 100-120 parts by weight of base paint, and is characterized in that: the emulsion further comprises a hardening emulsion, wherein the hardening emulsion comprises the following components in parts by weight: 30-35 parts of silicone-acrylic emulsion, 20-25 parts of potassium silicate sol, 5-10 parts of quaternary ammonium alkyl etherified starch, 10-15 parts of hydroxypropyl methyl cellulose, 3-7 parts of pottery clay and 1-3 parts of cationic dispersant; the preparation method of the potassium silicate sol comprises the following steps:
putting 40-50 parts by weight of inorganic silica sol into a reactor, and adjusting the temperature to 65-75 ℃;
under the condition of stirring, adding 10-15 parts by weight of potassium hydroxide and 20-25 parts by weight of deionized water, and carrying out mixed reaction for 30-40 min;
adding 5-10 parts by weight of polyhydroxy cage type silsesquioxane, raising the temperature to 75-80 ℃, and stirring for 6-8 hours to obtain potassium silicate sol; the polyhydroxy cage-type silsesquioxane is octahydroxyl cage-type silsesquioxane or hexadecydroxy cage-type silsesquioxane.
2. The artificial marble decorative material of claim 1, wherein: the viscosity of the silicone-acrylic emulsion is 1500-2000 mpa · s.
3. The artificial marble decorative material of claim 1, wherein: the degree of substitution of the quaternary ammonium alkyl etherified starch is 0.08-0.3.
4. The artificial marble decorative material of claim 1, wherein: the argil needs to be pretreated, 0.5-2 parts of hydroxyl silicone oil is added into the argil, and stirring is carried out for 30-40 min for later use.
5. The method for preparing an imitation marble decorative material according to any one of claims 1 to 4, comprising the steps of:
(1) preparing a hardening emulsion: a) adding potassium silicate sol into the silicone-acrylate emulsion, controlling the temperature to be 45-55 ℃, and keeping stirring until the mixture is uniformly mixed to obtain a mixed main body; b) adding quaternary ammonium alkyl etherified starch, argil and a cationic dispersant into the mixed main body, and uniformly stirring; c) adding hydroxypropyl methyl cellulose, and uniformly stirring to obtain hardening emulsion;
(2) mixing the protective adhesive with the base paint, and stirring for 20-30 min;
(3) adding the hardening emulsion and water according to the weight ratio of 2-3: 1, and uniformly stirring to obtain the marble-imitated decorative material.
6. The method for preparing an imitation marble decorative material according to claim 5, wherein: and (2) placing the hardening emulsion in the step (1) into a ball mill for ball milling, wherein the viscosity of the hardening emulsion after ball milling is 2500-4000 mpa · s.
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CN112812638A (en) * 2020-12-31 2021-05-18 滁州圣好材料科技有限公司 Marble-like decorative material and preparation method thereof
CN114591637B (en) * 2022-02-25 2023-05-26 上海虹涂新材料科技有限公司 Ceramic coating with stone-like effect and preparation method thereof
CN116285514A (en) * 2023-03-22 2023-06-23 广东美洲宝实业有限公司 Waterproof anti-fouling stone-like paint and preparation method thereof

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JPS5319348A (en) * 1976-08-06 1978-02-22 Toyo Soda Mfg Co Ltd Aqueous coating compositions curable at room temperature
CN103409024A (en) * 2013-08-30 2013-11-27 秦大春 Regeneration-type sand maishi paint
CN109233519A (en) * 2018-09-06 2019-01-18 江门市工匠环保新材料有限公司 Imitation marble paint and its preparation method and application

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JPS5319348A (en) * 1976-08-06 1978-02-22 Toyo Soda Mfg Co Ltd Aqueous coating compositions curable at room temperature
CN103409024A (en) * 2013-08-30 2013-11-27 秦大春 Regeneration-type sand maishi paint
CN109233519A (en) * 2018-09-06 2019-01-18 江门市工匠环保新材料有限公司 Imitation marble paint and its preparation method and application

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