CN111763453A - Inorganic transparent waterproof paint for tile surface - Google Patents
Inorganic transparent waterproof paint for tile surface Download PDFInfo
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- CN111763453A CN111763453A CN202010653568.9A CN202010653568A CN111763453A CN 111763453 A CN111763453 A CN 111763453A CN 202010653568 A CN202010653568 A CN 202010653568A CN 111763453 A CN111763453 A CN 111763453A
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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
- C09D143/00—Coating 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
- C09D143/04—Homopolymers or copolymers of monomers containing silicon
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/38—Polymerisation using regulators, e.g. chain terminating agents, e.g. telomerisation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F212/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring
- C08F212/02—Monomers containing only one unsaturated aliphatic radical
- C08F212/04—Monomers containing only one unsaturated aliphatic radical containing one ring
- C08F212/06—Hydrocarbons
- C08F212/08—Styrene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/14—Methyl esters, e.g. methyl (meth)acrylate
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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
- C09D7/65—Additives macromolecular
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Abstract
The invention discloses an inorganic transparent waterproof coating for a ceramic tile surface, which is prepared from a component A and a component B according to the weight ratio of 2.8-3.2:1, wherein the component A comprises 40-50 parts of water-based cationic acrylic resin, 0.2-0.5 part of defoaming agent, 0.1-0.4 part of wetting agent, 0.05-0.2 part of rheological aid, 3.0-3.8 parts of film-forming aid, 0.7-1.2 parts of water repellent methyl silicone oil and 45-55 parts of water in parts by weight, and the component B is a water-based inorganic polysiloxane curing agent. The inorganic transparent waterproof coating provided by the invention has the advantages of good bonding capability, excellent weather resistance and water resistance and high hardness, and is suitable for waterproof treatment of expansion joints of tiles on inner and outer walls, cement mortar surfaces, fair-faced concrete and the like.
Description
Technical Field
The invention belongs to the technical field of building materials, and particularly relates to an inorganic transparent waterproof coating for a ceramic tile surface.
Background
Because of all leaving the expansion joint because of building outer wall tiling at present, and what the gap filler that the expansion joint was used mostly adopted is the material that cement base is given first place to, and cement base is given first place to can't satisfy water-proof effects, and along with time lapse, the cement joint permeates water, the infiltration is more and more serious, permeates water and leads to serious saltpetering to influence the intensity of cement along with the infiltration, can lead to falling brick and indoor wall to go mildy most seriously, final maintenance scheme can only be to knock off the ceramic tile and maintain again, and is with high costs.
The general waterproof coating on the market has poor waterproof and waterproof effects, poor weather resistance and short service time.
Disclosure of Invention
In order to solve the technical problems, the invention provides an inorganic transparent waterproof coating for a tile surface, which can be used for waterproof treatment of tile surfaces, including toilet tile surfaces and exterior wall tile surfaces.
The invention adopts the technical scheme that the inorganic transparent waterproof coating for the tile surface is prepared from a component A and a component B according to the weight ratio of 2.8-3.2:1, wherein the component A comprises 40-50 parts of water-based cationic acrylic resin, 0.2-0.5 part of defoaming agent, 0.1-0.4 part of wetting agent, 0.05-0.2 part of rheological additive, 3.0-3.8 parts of film-forming additive, 0.7-1.2 parts of water repellent methyl silicone oil and 45-55 parts of water according to parts by weight, and the component B is a water-based inorganic polysiloxane curing agent.
Further, the weight ratio of the component A to the component B is 3: 1, wherein the component A comprises 45 parts of water-based cationic acrylic resin, 0.4 part of defoaming agent, 0.2 part of wetting agent, 0.1 part of rheological additive, 3.4 parts of film-forming additive, 0.9 part of water repellent methyl silicone oil and 50 parts of water by weight, and the component B is water-based inorganic polysiloxane curing agent.
Further, the aqueous cationic acrylic resin raw material comprises a monomer, a functional monomer, a solvent, an acid, a chain transfer agent and an initiator; the weight portion of the material is as follows:
wherein the monomer comprises 100-400 parts of methyl methacrylate, 5-50 parts of butyl acrylate and 20-200 parts of styrene;
the functional monomer comprises 10-100 parts of vinyl triethoxysilane, 20-200 parts of dimethylaminoethyl methacrylate and 30-250 parts of hydroxyethyl acrylate;
the solvent comprises 400 parts of propylene glycol methyl ether 100-400 parts, 50-400 parts of absolute ethyl alcohol and 20-200 parts of N, N-dimethylformamide;
the acid is 5-60 parts of lactic acid;
the chain transfer agent is 1-50 parts of methyl styrene linear dimer;
the initiator is 1-50 parts of azobisisobutyronitrile.
According to the formula of the water-based cationic acrylic resin, a solution polymerization technology is utilized, methyl methacrylate, butyl acrylate and styrene are polymerized under the initiation of an initiator azobisisobutyronitrile, functional monomers of vinyl triethoxysilane, dimethylaminoethyl methacrylate and hydroxyethyl acrylate are introduced at the same time, vinyl in the vinyl triethoxysilane also participates in double bond reaction, silicon materials are introduced into the whole water-based resin, and lactic acid is used for neutralization, so that the water-based organic silicon modified cationic acrylic resin with high solid content, good transparency and good water solubility is obtained.
The functional monomer of dimethylaminoethyl methacrylate contains acrylic double bond functional groups, and the acrylic double bond can carry out free radical polymerization with other double bonds. The functional monomer dimethylaminoethyl methacrylate contains amino functional groups, and the amino and acid neutralization can provide water solubility, so that the synthesized resin can be dissolved in water.
Further, the functional monomer also comprises 10-100 parts of vinyl trimethoxy silane, 30-250 parts of hydroxyethyl methacrylate and 20-200 parts of dimethylaminopropyl methacrylate; wherein the vinyltrimethoxysilane is used for completely or partially replacing the vinyltriethoxysilane, the hydroxyethyl methacrylate is used for partially or completely replacing the hydroxyethyl acrylate, and the dimethylaminopropyl methacrylate is used for partially or completely replacing the dimethylaminoethyl methacrylate. The vinyl trimethoxy silane functional monomer is added to introduce silicon materials into the resin, and the resin with the introduced silicon materials has higher hardness and resistance. The hydroxyethyl methacrylate is added to introduce hydroxyl functional groups into the resin, thereby improving the solvent resistance and the gloss of the resin. Dimethylamino propyl methacrylate is added to introduce amine functional groups into the resin, and the neutralization of the amine and acid can provide water solubility and provide a water-soluble material.
Further, 5-60 parts of lactic acid are replaced by 5-50 parts of acetic acid; 1-50 parts of the chain transfer agent methyl styrene linear dimer are replaced by 1-50 parts of n-dodecyl mercaptan. The purpose of adding acetic acid or lactic acid is to perform neutralization reaction with amino functional groups in the methacrylic acid dimethylamino propyl ester or methacrylic acid dimethylamino ethyl ester, and the synthesized resin has water solubility. The chain transfer agent is added to control the molecular weight of the synthesized resin, and the molecular weight distribution of the synthesized waterborne resin can be more concentrated and the performance is more excellent after the chain transfer agent is added.
Further, the preparation method of the aqueous cationic acrylic resin comprises the following specific steps:
1) uniformly mixing propylene glycol methyl ether and absolute ethyl alcohol serving as solvents, and heating to 85-95 ℃;
2) uniformly mixing a monomer, a functional monomer, a chain transfer agent, a solvent N, N-dimethylformamide and an initiator to obtain a mixed solution;
3) dropwise adding the mixed liquid obtained in the step 2) into the solvent obtained in the step 1); dropwise adding and stirring, and controlling the adding to be finished within 3-6 hours;
4) step 3), after the dropwise addition is finished, controlling the temperature to be 85-95 ℃ and preserving the heat for 1-2 h; then cooling to below 50 ℃;
5) adding acid into the feed liquid obtained in the step 4), and stirring for more than 30min to obtain the water-based cationic acrylic resin.
The purpose of dropwise adding is to control the reaction degree during the specific preparation of the water-based cationic acrylic resin, the reaction process can be controlled by adopting the dropwise adding, the dropwise added monomer can fully react, and the molecular weight distribution of the synthesized water-based resin is narrower by adopting the dropwise adding mode. The explosive polymerization cannot be generated due to excessive addition at one time, so that the safety and reliability of the dropwise addition production mode are ensured.
In the further coating formula, the defoaming agent is BYK024, the wetting agent is TEGOWET270, the rheological additive is BYK420, and the film-forming additive is DPM 3.0-3.8 parts.
The invention also relates to a method for preparing the coating, which comprises the following specific steps:
1) weighing the raw materials of the component A of the coating according to a ratio, firstly adding water, then sequentially adding a water repellent methyl silicone oil, a defoaming agent, a wetting agent, a rheological aid and a film-forming aid, finally adding water-based cationic acrylic resin, stirring for 30-60 min to obtain the component A of the coating,
2) before use, the component A and the component B are weighed according to the proportion and mixed to obtain the inorganic transparent waterproof coating for the ceramic tile surface.
Further, in the stirring process of step 1), the stirring speed is controlled at 250-350 rpm, so as to avoid generating bubbles.
The invention has the following beneficial effects:
1. the coating adopts the component A, contains water-based cationic acrylic resin, and can be self-dried at normal temperature to form a film. The paint prepared by mixing the component B and the component B is dry to the touch for about 1 hour at normal temperature. The aqueous cationic acrylic resin adopts a solution polymerization technology, introduces dimethylamino ethyl methacrylate hydrophilic monomers in the synthesis process, and neutralizes by adding acetic acid or lactic acid; meanwhile, a chain transfer agent is added into the formula, so that the molecular weight of the synthesized waterborne resin can be controlled, the molecular weight distribution of the synthesized waterborne resin is narrow, the waterborne resin with high solid content and low viscosity, which is good in water solubility, is obtained, the solid content reaches 60%, and the fullness after painting is good.
2. The paint adopts the component A, contains the water-based cationic acrylic resin, has excellent transparency, and can not affect the color of the tile surface when being used for waterproofing the tile surface.
3. The coating has excellent water impermeability and weather resistance, wherein the weather resistance can meet the requirements of no bubbling, no peeling and no crack after 600 h.
Detailed Description
Example 1:
an inorganic transparent waterproof coating for ceramic tile surfaces is prepared from a component A and a component B according to the weight ratio of 2.8:1, wherein the component A comprises 40 parts of water-based cationic acrylic resin, 0.2 part of a defoaming agent, 0.1 part of a wetting agent, 0.05 part of a rheological aid, 3.0 parts of a film-forming aid, 0.7 part of water repellent methyl silicone oil and 45 parts of water in parts by weight, and the component B is a water-based inorganic polysiloxane curing agent.
Example 2:
the inorganic transparent waterproof coating for the tile surface is prepared from a component A and a component B according to the weight ratio of 3.2:1, wherein the component A comprises 50 parts of waterborne cationic acrylic resin, 0.5 part of defoaming agent, 0.4 part of wetting agent, 0.2 part of rheological aid, 3.8 parts of film-forming aid, 1.2 parts of water repellent methyl silicone oil and 55 parts of water in parts by weight, and the component B is a waterborne inorganic polysiloxane curing agent.
Example 3:
an inorganic transparent waterproof coating for a ceramic tile surface is prepared from a component A and a component B in a weight ratio of 3: 1, wherein the component A comprises 45 parts of water-based cationic acrylic resin, 0.4 part of defoaming agent, 0.2 part of wetting agent, 0.1 part of rheological additive, 3.4 parts of film-forming additive, 0.9 part of water repellent methyl silicone oil and 50 parts of water by weight, and the component B is water-based inorganic polysiloxane curing agent.
In the above embodiments, the aqueous cationic acrylic resin includes a monomer, a functional monomer, a solvent, an acid, a chain transfer agent, and an initiator; the weight portion of the material is as follows:
wherein the monomer comprises 100-400 parts of methyl methacrylate, 5-50 parts of butyl acrylate and 20-200 parts of styrene;
the functional monomer comprises 10-100 parts of vinyl triethoxysilane, 20-200 parts of dimethylaminoethyl methacrylate and 30-250 parts of hydroxyethyl acrylate;
the solvent comprises 400 parts of propylene glycol methyl ether 100-400 parts, 50-400 parts of absolute ethyl alcohol and 20-200 parts of N, N-dimethylformamide;
the acid is 5-60 parts of lactic acid;
the chain transfer agent is 1-50 parts of methyl styrene linear dimer;
the initiator is 1-50 parts of azobisisobutyronitrile.
The preparation method of the water-based cationic acrylic resin comprises the following specific steps:
1) uniformly mixing propylene glycol methyl ether and absolute ethyl alcohol serving as solvents, and heating to 85-95 ℃;
2) uniformly mixing a monomer, a functional monomer, a chain transfer agent, a solvent N, N-dimethylformamide and an initiator to obtain a mixed solution;
3) dropwise adding the mixed liquid obtained in the step 2) into the solvent obtained in the step 1); dropwise adding and stirring, and controlling the adding to be finished within 3-6 hours;
4) step 3), after the dropwise addition is finished, controlling the temperature to be 85-95 ℃ and preserving the heat for 1-2 h; then cooling to below 50 ℃;
5) adding acid into the feed liquid obtained in the step 4), and stirring for more than 30min to obtain the water-based cationic acrylic resin.
Several cases are listed below to illustrate the preparation of the aqueous cationic acrylic resin.
Cases 1,
1) Firstly, 250kg of propylene glycol methyl ether and 50kg of absolute ethyl alcohol are stirred and mixed uniformly, and then the mixture is heated to 88 ℃;
2) uniformly mixing 150kg of methyl methacrylate, 40kg of butyl acrylate, 200kg of styrene, 100kg of dimethylaminoethyl methacrylate, 100kg of hydroxyethyl acrylate, 30kg of vinyl triethoxysilane, 10kg of linear methyl styrene dimer, 50kg of N, N-dimethylformamide and 10kg of azobisisobutyronitrile to obtain a mixed solution;
3) adding the mixed solution obtained in the step 2) into the step 1), stirring while dropwise adding, and controlling the dropwise adding time to be 5 hours;
4) after the step 3) is finished, continuously preserving the heat for 2 hours, and controlling the temperature at 88 ℃;
5) after the step 4) is finished, cooling, wherein the temperature is less than 50 ℃;
6) adding 10kg of lactic acid into the step 5), and stirring for half an hour to obtain the water-based organic silicon modified cationic acrylic resin.
Case 2:
1) firstly, 240kg of propylene glycol methyl ether and 80kg of absolute ethyl alcohol are stirred and mixed uniformly, and then are heated to 90 ℃;
2) uniformly mixing 180kg of methyl methacrylate, 20kg of butyl acrylate, 180kg of styrene, 80kg of dimethylaminoethyl methacrylate, 60kg of hydroxyethyl acrylate, 40kg of vinyl triethoxysilane, 15kg of a linear methyl styrene dimer, 60kg of N, N-dimethylformamide and 12kg of azobisisobutyronitrile to obtain a mixed solution;
3) adding the mixed solution obtained in the step 2) into the step 1), stirring while dropwise adding, and controlling the dropwise adding time to be 5 hours;
4) after the step 3) is finished, continuously preserving the heat for 2 hours, and controlling the temperature to be 90 ℃;
5) after the step 4) is finished, cooling, wherein the temperature is less than 50 ℃;
6) adding 15kg of lactic acid into the step 5), and stirring for half an hour to obtain the water-based organic silicon modified cationic acrylic resin.
Case 3:
1) firstly, 100kg of propylene glycol methyl ether and 200kg of absolute ethyl alcohol are stirred and mixed uniformly, and then the mixture is heated to 88 ℃;
2) uniformly mixing 150kg of methyl methacrylate, 40kg of butyl acrylate, 200kg of styrene, 100kg of dimethylaminoethyl methacrylate, 100kg of hydroxyethyl acrylate, 30kg of vinyl triethoxysilane, 50kg of linear methyl styrene dimer, 160kg of N, N-dimethylformamide and 50kg of azobisisobutyronitrile to obtain a mixed solution;
3) adding the mixed solution obtained in the step 2) into the step 1), stirring while dropwise adding, and controlling the dropwise adding time to be 4 hours;
4) after the step 3) is finished, continuously preserving the heat for 2 hours, and controlling the temperature at 88 ℃;
5) after the step 4) is finished, cooling, wherein the temperature is less than 50 ℃;
6) adding 20kg of lactic acid into the step 5), and stirring for half an hour to obtain the water-based organic silicon modified cationic acrylic resin.
Case 4:
1) firstly, 250kg of propylene glycol methyl ether and 50kg of absolute ethyl alcohol are stirred and mixed uniformly, and then the mixture is heated to 91 ℃;
2) uniformly mixing 250kg of methyl methacrylate, 20kg of butyl acrylate, 100kg of styrene, 20kg of dimethylaminopropyl methacrylate, 30kg of hydroxyethyl methacrylate, 10kg of vinyltrimethoxysilane, 60kg of dimethylaminoethyl methacrylate, 90kg of hydroxyethyl acrylate, 20kg of vinyltriethoxysilane, 8kg of a linear methyl styrene dimer, 40kg of N, N-dimethylformamide and 30kg of azobisisobutyronitrile to obtain a mixed solution;
3) adding the mixed solution obtained in the step 2) into the step 1), stirring while dropwise adding, and controlling the dropwise adding time to be 4 hours;
4) after the step 3) is finished, continuously preserving the heat for 2 hours, and controlling the temperature at 88 ℃;
5) after the step 4) is finished, cooling, wherein the temperature is less than 50 ℃;
6) adding 15kg of lactic acid into the step 5), and stirring for 45min to obtain the water-based organic silicon modified cationic acrylic resin.
Case 5:
1) firstly, 250kg of propylene glycol methyl ether and 50kg of absolute ethyl alcohol are stirred and mixed uniformly, and then the mixture is heated to 95 ℃;
2) uniformly mixing 150kg of methyl methacrylate, 50kg of butyl acrylate, 150kg of styrene, 100kg of dimethylamino propyl methacrylate, 50kg of hydroxyethyl acrylate, 50kg of vinyl triethoxysilane, 20kg of N-dodecyl mercaptan, 30kg of N, N-dimethylformamide and 25kg of azobisisobutyronitrile to obtain a mixed solution;
3) adding the mixed solution obtained in the step 2) into the step 1), stirring while dropwise adding, and controlling the dropwise adding time to be 5 hours;
4) after the step 3) is finished, continuously preserving the heat for 1.5 hours, and controlling the temperature at 90 ℃;
5) after the step 4) is finished, cooling, wherein the temperature is less than 50 ℃;
6) adding 10kg of lactic acid and 10kg of acetic acid into the step 5), and stirring for 55min to obtain the water-based organic silicon modified cationic acrylic resin.
The above cases are only preferred technical solutions of the aqueous cationic acrylic resin, and should not be regarded as limitations for the preparation of the aqueous cationic acrylic resin, and the protection scope thereof should be subject to the technical solutions described in the claims.
The component B in the coating provided by the invention can be selected from the water-based inorganic polysiloxane resin curing agent disclosed in the patent application No. 2017105337250. When the specific coating is prepared, water is firstly added, water repellent methyl silicone oil, a defoaming agent, a wetting agent, a rheological aid, a film-forming aid and water-based cationic acrylic resin are sequentially added, the mixture is stirred for 30-60 min to obtain a component A of the coating, and the component A and the component B are weighed according to a ratio and mixed before use to obtain the inorganic transparent waterproof coating for the ceramic tile surface. In the stirring process, the stirring speed is controlled at 250-350 r/min, so as to avoid generating bubbles.
The concrete construction is carried out according to the following requirements
(1) Rolling, brushing and spraying.
(2) The recoating time is at least 4 hours apart.
(3) Construction temperature: and constructing under the conditions that the temperature is higher than 5 ℃ and the relative humidity is less than 85 percent.
The performance test data for the coatings provided by the present invention are shown in table 1 below. The coating has good impermeability and weather resistance, is particularly suitable for the waterproof treatment of ceramic tile surfaces, is also suitable for the waterproof treatment of ceramic tile expansion joints of inner and outer walls, cement mortar surfaces, fair-faced concrete and the like, and is convenient to use.
TABLE 1
The above-described embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the present invention, and the scope of the present invention is defined by the claims, and equivalents including technical features described in the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the invention.
Claims (10)
1. The inorganic transparent waterproof paint for the tile surface is characterized by being prepared from a component A and a component B according to the weight ratio of 2.8-3.2:1, wherein the component A comprises 40-50 parts of water-based cationic acrylic resin, 0.2-0.5 part of defoaming agent, 0.1-0.4 part of wetting agent, 0.05-0.2 part of rheological aid, 3.0-3.8 parts of film-forming aid, 0.7-1.2 parts of water repellent methyl silicone oil and 45-55 parts of water in parts by weight, and the component B is a water-based inorganic polysiloxane curing agent.
2. The coating of claim 1, wherein: the weight ratio of the component A to the component B is 3: 1, wherein the component A comprises 45 parts of water-based cationic acrylic resin, 0.4 part of defoaming agent, 0.2 part of wetting agent, 0.1 part of rheological additive, 3.4 parts of film-forming additive, 0.9 part of water repellent methyl silicone oil and 50 parts of water by weight, and the component B is water-based inorganic polysiloxane curing agent.
3. The coating of claim 1, wherein: the raw materials of the water-based cationic acrylic resin comprise a monomer, a functional monomer, a solvent, an acid, a chain transfer agent and an initiator; the weight portion of the material is as follows:
wherein the monomer comprises 100-400 parts of methyl methacrylate, 5-50 parts of butyl acrylate and 20-200 parts of styrene;
the functional monomer comprises 10-100 parts of vinyl triethoxysilane, 20-200 parts of dimethylaminoethyl methacrylate and 30-250 parts of hydroxyethyl acrylate;
the solvent comprises 400 parts of propylene glycol methyl ether 100-400 parts, 50-400 parts of absolute ethyl alcohol and 20-200 parts of N, N-dimethylformamide;
the acid is 5-60 parts of lactic acid;
the chain transfer agent is 1-50 parts of methyl styrene linear dimer;
the initiator is 1-50 parts of azobisisobutyronitrile.
4. The coating of claim 3, wherein: the functional monomer also comprises 10-100 parts of vinyl trimethoxy silane, 30-250 parts of hydroxyethyl methacrylate and 20-200 parts of dimethylaminopropyl methacrylate; wherein the vinyltrimethoxysilane is used for completely or partially replacing the vinyltriethoxysilane, the hydroxyethyl methacrylate is used for partially or completely replacing the hydroxyethyl acrylate, and the dimethylaminopropyl methacrylate is used for partially or completely replacing the dimethylaminoethyl methacrylate.
5. The coating of claim 3, wherein: 5-60 parts of lactic acid is replaced by 5-50 parts of acetic acid.
6. The coating of claim 3, wherein: 1-50 parts of the chain transfer agent methyl styrene linear dimer are replaced by 1-50 parts of n-dodecyl mercaptan.
7. The coating according to claims 3-6, characterized in that: the preparation method of the water-based cationic acrylic resin comprises the following specific steps:
1) uniformly mixing propylene glycol methyl ether and absolute ethyl alcohol serving as solvents, and heating to 85-95 ℃;
2) uniformly mixing a monomer, a functional monomer, a chain transfer agent, a solvent N, N-dimethylformamide and an initiator to obtain a mixed solution;
3) dropwise adding the mixed liquid obtained in the step 2) into the solvent obtained in the step 1); dropwise adding and stirring, and controlling the adding to be finished within 3-6 hours;
4) step 3), after the dropwise addition is finished, controlling the temperature to be 85-95 ℃ and preserving the heat for 1-2 h; then cooling to below 50 ℃;
5) adding acid into the feed liquid obtained in the step 4), and stirring for more than 30min to obtain the water-based cationic acrylic resin.
8. The coating of claim 1, wherein: the defoaming agent is BYK024, the wetting agent is TEGOWET270, the rheological additive is BYK420, and the film-forming additive is 3.0-3.8 parts of DPM.
9. The method for preparing the coating of any one of claims 1 to 8, characterized by the specific steps of:
1) weighing the raw materials of the component A of the coating according to a ratio, firstly adding water, then sequentially adding a water repellent methyl silicone oil, a defoaming agent, a wetting agent, a rheological aid and a film-forming aid, finally adding water-based cationic acrylic resin, stirring for 30-60 min to obtain the component A of the coating,
2) before use, the component A and the component B are weighed according to the proportion and mixed to obtain the inorganic transparent waterproof coating for the ceramic tile surface.
10. The method of claim 9, wherein: in the stirring process of the step 1), the stirring speed is controlled at 250-350 r/min, so that bubbles are avoided.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112265099A (en) * | 2020-10-20 | 2021-01-26 | 浙江柏尔木业有限公司 | Preparation process of thin floor heating solid wood floor |
| CN112778834A (en) * | 2021-02-22 | 2021-05-11 | 昆明凌润科技有限公司 | Nanoscale weak cation acrylate emulsion for water-based transparent ink and preparation method thereof |
| EP4421133A1 (en) * | 2023-02-27 | 2024-08-28 | Evonik Operations GmbH | Aqueous preparation containing at least one aqueous hydrophobing agent for producing aqueous coating agents with improved early rain resistance |
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| CN112778834A (en) * | 2021-02-22 | 2021-05-11 | 昆明凌润科技有限公司 | Nanoscale weak cation acrylate emulsion for water-based transparent ink and preparation method thereof |
| EP4421133A1 (en) * | 2023-02-27 | 2024-08-28 | Evonik Operations GmbH | Aqueous preparation containing at least one aqueous hydrophobing agent for producing aqueous coating agents with improved early rain resistance |
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