CN114163571B - Polyvinyl chloride hybrid styrene-acrylic emulsion and preparation method and application thereof - Google Patents
Polyvinyl chloride hybrid styrene-acrylic emulsion and preparation method and application thereof Download PDFInfo
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- CN114163571B CN114163571B CN202111568008.4A CN202111568008A CN114163571B CN 114163571 B CN114163571 B CN 114163571B CN 202111568008 A CN202111568008 A CN 202111568008A CN 114163571 B CN114163571 B CN 114163571B
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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
- C08F259/00—Macromolecular compounds obtained by polymerising monomers on to polymers of halogen containing monomers as defined in group C08F14/00
- C08F259/02—Macromolecular compounds obtained by polymerising monomers on to polymers of halogen containing monomers as defined in group C08F14/00 on to polymers containing chlorine
- C08F259/04—Macromolecular compounds obtained by polymerising monomers on to polymers of halogen containing monomers as defined in group C08F14/00 on to polymers containing chlorine on to polymers of vinyl chloride
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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
- C08F2/12—Polymerisation in non-solvents
- C08F2/16—Aqueous medium
- C08F2/22—Emulsion polymerisation
- C08F2/24—Emulsion polymerisation with the aid of emulsifying agents
- C08F2/26—Emulsion polymerisation with the aid of emulsifying agents anionic
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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
- C09D151/00—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers
- C09D151/003—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers grafted on to macromolecular compounds obtained by reactions only involving unsaturated carbon-to-carbon bonds
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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
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- 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
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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
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
Abstract
The invention relates to the technical field of building coating, and provides a polyvinyl chloride hybrid styrene-acrylic emulsion, which comprises, by weight, 20-40 parts of deionized water, 0.1-1 part of a pH buffering agent, 0.1-1 part of an anionic emulsifier, 20-60 parts of a polyvinyl chloride emulsion, 25-45 parts of a main monomer, 0.1-1 part of a hydrophilic functional monomer, 0.1-1 part of a carboxyl monomer, 0.02-0.2 part of a silane coupling agent, 0.1-1 part of an initiator, 0.01-0.1 part of a post-elimination reducing agent, 0.01-0.1 part of a defoaming agent, 0.02-1 part of an antiseptic bactericide, 0.01-0.5 part of a pH regulator and 0.2-1 part of a nonionic surfactant. Through the technical scheme, the problem of high cost of the styrene-acrylic emulsion in the prior art is solved.
Description
Technical Field
The invention relates to the technical field of building coatings, in particular to a polyvinyl chloride hybrid styrene-acrylic emulsion and a preparation method and application thereof.
Background
Although the performances of the conventional solvent-based paint cannot be exceeded, the solvent-based paint has no pollution, is environment-friendly and safe, accords with the national environmental protection policy, and becomes a relatively large industrial product in the field of building paint, especially after new regulations of the paint industry are issued in 2020 and implemented in 2020 and 1 month of 2020, the water-based paint or the water-based of the paint becomes the key of continuous development of enterprises, the original solvent-based paint enterprises are eliminated, stricter regulations are issued correspondingly in a plurality of cities, and the solvent-based paint and the solvent-based adhesive are forbidden to be used, so that the development and the development of the water-based paint resin with excellent comprehensive performance and capable of replacing the conventional solvent-based paint have very wide application prospect and social benefit.
The synthetic resin emulsion interior wall coating standard GB/T9756-2018 starts to take effect on 1 month 1 day 2019. The new standard improves the index of the brushing resistance, and the requirement on the paint formula is higher. In addition, since the last half of the year, the raw material price of the synthetic resin emulsion increases, especially in the present year, the price reaches a high point of several years, which greatly increases the cost of the coating, but the selling price of the coating does not increase, and the cost pressure of enterprises upstream and downstream of the coating is huge. Low cost and low price styrene-acrylic emulsions are a market need.
Disclosure of Invention
The invention provides a polyvinyl chloride hybrid styrene-acrylic emulsion and a preparation method and application thereof, and solves the problem of high cost of the styrene-acrylic emulsion in the related technology.
The technical scheme of the invention is as follows:
the polyvinyl chloride hybrid styrene-acrylic emulsion comprises, by weight, 20-40 parts of deionized water, 0.1-1 part of a pH buffering agent, 0.1-1 part of an anionic emulsifier, 20-60 parts of a polyvinyl chloride emulsion, 25-45 parts of a main monomer, 0.1-1 part of a hydrophilic functional monomer, 0.1-1 part of a carboxyl monomer, 0.02-0.2 part of a silane coupling agent, 0.1-1 part of an initiator, 0.01-0.1 part of a post-elimination oxidant, 0.01-0.1 part of a post-elimination reducing agent, 0.02-1 part of a defoaming agent, 0.01-0.5 part of an antiseptic bactericide, 0.2-1 part of a pH regulator and 0.1-1 part of a nonionic surfactant.
As a further technical scheme, the main monomer is at least one of styrene, methyl methacrylate, butyl acrylate and 2-ethylhexyl acrylate; the hydrophilic functional monomer is at least one of acrylonitrile, acrylamide and methacrylamide; the carboxyl monomer is at least one of acrylic acid, methacrylic acid, itaconic acid, maleic acid and fumaric acid.
As a further technical scheme, the anionic emulsifier is at least one of sodium dodecyl benzene sulfonate, sodium iso-tridecanol polyoxyethylene ether sulfate and ammonium iso-tridecanol polyoxyethylene ether sulfate.
As a further technical scheme, the solid content of the polyvinyl chloride emulsion is 29-31%, the pH value is 7-8, and the viscosity is 1-200.
As a further technical scheme, the silane coupling agent is at least one of vinyl triethoxysilane and vinyl trimethoxysilane, the initiator is at least one of ammonium persulfate and sodium persulfate, the post-oxidation agent is tert-butyl hydroperoxide and hydrogen peroxide, the post-oxidation reducing agent is ascorbic acid and sodium bicarbonate, the nonionic surfactant is isomeric tridecanol polyoxyethylene ether, the number of ethylene oxide (EO number) in the isomeric tridecanol polyoxyethylene ether is 8-11 or 30-50, the pH buffering agent is at least one of sodium carbonate and sodium bicarbonate, and the pH regulator is at least one of ammonia water, sodium hydroxide and sodium bicarbonate.
The invention also provides a preparation method of the polyvinyl chloride hybrid styrene-acrylic emulsion, which comprises the following steps:
(1) Weighing the components according to the weight parts of the raw materials of the polyvinyl chloride hybrid styrene-acrylic emulsion;
(2) Evenly mixing 50-70% of deionized water and 60-80% of anionic emulsifier to obtain an emulsifier solution;
(3) Mixing a hydrophilic functional monomer, a silane coupling agent, a carboxyl monomer and a main monomer, adding the mixture into the emulsifier solution, and dispersing to obtain a dispersion liquid;
(4) Adding deionized water with the formula amount of 5-15%, polyvinyl chloride emulsion, pH buffering agent and the rest anionic emulsifier into a reactor, heating to 76-80 ℃ under stirring, adding dispersion liquid with the formula amount of 5-20% and initiator with the formula amount of 10-40% into the reactor after the temperature is stable, reacting, and controlling the temperature at 80-84 ℃ after the temperature is raised, and keeping the temperature for 10-20min to obtain seed emulsion;
(5) Synchronously dripping the rest dispersion liquid and the rest initiator into the seed emulsion, wherein the dripping temperature is 80-84 ℃, the dripping time is 120-180min, and the temperature is kept for 90-150min after the dripping is finished; cooling to 68-70 ℃, synchronously dripping aqueous solutions of a post-oxidation reducing agent and a post-oxidation reducing agent for 30min, preserving heat for 30min after dripping, cooling to 40 ℃, adding a pH regulator, a nonionic surfactant, a defoaming agent and a preservative and sterilizing agent, and uniformly stirring to obtain the styrene-acrylic emulsion.
As a further technical scheme, in the step (3), the dispersing time is 20-40min.
The invention also provides application of the polyvinyl chloride hybrid styrene-acrylic emulsion in building paint.
As a further technical scheme, the building coating comprises, by weight, 30-40 parts of water, 0.1-1 part of alcohol ester, 0.1-0.5 part of mineral oil defoamer, 0.1-1 part of sodium salt dispersant, 0.1-1 part of propylene glycol, 0.1-0.2 part of wetting agent, 1-5 parts of rutile titanium dioxide, 20-30 parts of 800-mesh heavy calcium carbonate, 5-10 parts of water-washed kaolin, 10-15 parts of 4000-mesh calcined kaolin, 0.1-1 part of hydroxyethyl cellulose, 0.05-0.2 part of AMP (AMP), 5-15 parts of polyvinyl chloride hybrid styrene-acrylic emulsion, 0.05-0.2 part of kasong bactericide and 0.05-0.2 part of thickener.
As a further technical scheme, the building coating comprises 38.7 parts of water, 1.0 part of alcohol ester, 0.3 part of mineral oil defoamer and sodium salt dispersant in parts by weight: 0.5 part of propylene glycol, 0.1 part of wetting agent, 2.5 parts of rutile titanium dioxide, 25.0 parts of 800-mesh heavy calcium carbonate, 7.5 parts of water-washed kaolin, 13 parts of 4000-mesh calcined kaolin, 0.6 part of hydroxyethyl cellulose, 0.1 part of AMP-95, 10.0 parts of polyvinyl chloride hybrid styrene-acrylic emulsion, 0.1 part of kasong bactericide and 0.1 part of thickener.
The working principle and the beneficial effects of the invention are as follows:
1. according to the invention, the styrene-acrylic emulsion adopts polyvinyl chloride emulsion hybridization-acrylic emulsion and chlor-acrylic emulsion interpenetrating, so that the cost of the traditional styrene-acrylic emulsion can be greatly reduced, and the preparation process of the polyvinyl chloride hybridization styrene-acrylic emulsion is basically the same as that of the common styrene-acrylic emulsion, and the preparation process is simple, excellent in performance and high in cost performance; the styrene-acrylic emulsion provided by the invention has the advantages that the adopted raw materials are simple, and the formula cost is extremely low. Therefore, the low cost and the excellent performance are key of the technology, and the overall consideration of various performances and the cost of the styrene-acrylic emulsion is truly realized.
2. In the invention, polyvinyl chloride emulsion is adopted for hybridization of styrene-acrylic emulsion, the glass transition temperature of the polyvinyl chloride emulsion is high, film formation is not easy, but the pigment and filler proportion of a system is increased in the preparation process of the emulsion, so that the contrast ratio of the interior wall coating with the polyvinyl chloride hybridized styrene-acrylic emulsion as a base material is high.
3. In the invention, the polyvinyl chloride emulsion is adopted for hybridization of the styrene-acrylic emulsion, and the high glass transition temperature of the polyvinyl chloride emulsion increases the dry film hardness of the paint, so that the inner wall paint taking the polyvinyl chloride hybridization styrene-acrylic emulsion as a base material has better washing resistance, and the prepared inner wall paint can meet the requirements of new national standard on washing resistance on the basis of not increasing the dosage of the emulsion in the paint, thereby truly realizing the overall consideration of various performances in the new national standard primer standard.
4. In the invention, the emulsion system of the polyvinyl chloride hybrid styrene-acrylic emulsion adopts the most common anionic emulsifier, the cost of raw materials is low, and the prepared emulsion has high stability and high stability to powder.
5. In the invention, the silane coupling agent is added in the formula of the polyvinyl chloride hybrid styrene-acrylic emulsion, and the silane coupling agent adopts short-chain silane with high crosslinking property, so that the dosage is small, the crosslinking effect is high, and the cost of the emulsion is reduced.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
The polyvinyl chloride hybrid styrene-acrylic emulsion comprises, by weight, 20.15 parts of deionized water, 0.1 part of sodium carbonate, 0.25 part of sodium dodecyl benzene sulfonate, 45 parts of polyvinyl chloride emulsion, 17.5 parts of styrene, 14.5 parts of butyl acrylate, 0.3 part of acrylamide, 0.8 part of acrylic acid, 0.1 part of vinyltrimethoxysilane, 0.2 part of ammonium persulfate, 0.05 part of tert-butyl hydroperoxide, 0.05 part of ascorbic acid, 0.1 part of a defoaming agent, 0.1 part of an antiseptic bactericide, 0.6 part of ammonia water and 0.2 part of isomeric tridecanol polyoxyethylene ether (40 EO);
the preparation method comprises the following steps:
(1) Weighing the components according to the weight parts of the raw materials;
(2) Evenly mixing deionized water with the formula amount of 60% and sodium dodecyl benzene sulfonate with the formula amount of 70% to obtain an emulsifier solution;
(3) Mixing acrylamide, vinyl trimethoxy silane, acrylic acid, styrene and butyl acrylate, adding the mixture into the emulsifier solution under stirring for 30min to obtain a dispersion;
(4) Adding 10% of formula amount of deionized water, polyvinyl chloride emulsion, sodium carbonate and the rest of sodium dodecyl benzene sulfonate into a reactor, heating to 78 ℃ under stirring, adding 10% of dispersion liquid and 20% of formula amount of ammonium persulfate into the reactor after the temperature is stable, reacting, and controlling the temperature at 82 ℃ after the temperature is raised, and keeping the temperature for 15min to obtain seed emulsion;
(5) Synchronously dripping the rest dispersion liquid and the rest ammonium persulfate into the seed emulsion, wherein the dripping temperature is 80-84 ℃, the dripping time is 150min, and the temperature is kept for 120min after the dripping is finished; cooling to 70 ℃, synchronously dripping aqueous solution of tert-butyl hydroperoxide and ascorbic acid for 30min, preserving heat for 30min after dripping, cooling to 40 ℃, adding ammonia water, isomeric tridecanol polyoxyethylene ether (40 EO), defoaming agent and antiseptic bactericide, and stirring uniformly to obtain styrene-acrylic emulsion.
Example 2
The polyvinyl chloride hybrid styrene-acrylic emulsion comprises, by weight, 20.3 parts of deionized water, 0.1 part of sodium carbonate, 0.25 part of sodium dodecyl benzene sulfonate, 45 parts of polyvinyl chloride emulsion, 17.5 parts of styrene, 14.5 parts of butyl acrylate, 0.5 part of acrylamide, 0.6 part of acrylic acid, 0.1 part of vinyltrimethoxysilane, 0.2 part of ammonium persulfate, 0.05 part of tert-butyl hydroperoxide, 0.05 part of ascorbic acid, 0.1 part of a defoaming agent, 0.1 part of an antiseptic bactericide, 0.45 part of ammonia water and 0.2 part of isomeric tridecanol polyoxyethylene ether (40 EO);
the preparation method comprises the following steps:
(1) Weighing the components according to the weight parts of the raw materials;
(2) Evenly mixing deionized water with the formula amount of 60% and sodium dodecyl benzene sulfonate with the formula amount of 70% to obtain an emulsifier solution;
(3) Mixing acrylamide, vinyl trimethoxy silane, acrylic acid, styrene and butyl acrylate, adding the mixture into the emulsifier solution under stirring for 30min to obtain a dispersion;
(4) Adding 10% of formula amount of deionized water, polyvinyl chloride emulsion, sodium carbonate and the rest of sodium dodecyl benzene sulfonate into a reactor, heating to 78 ℃ under stirring, adding 10% of dispersion liquid and 20% of formula amount of ammonium persulfate into the reactor after the temperature is stable, reacting, and controlling the temperature at 82 ℃ after the temperature is raised, and keeping the temperature for 15min to obtain seed emulsion;
(5) Synchronously dripping the rest dispersion liquid and the rest ammonium persulfate into the seed emulsion, wherein the dripping temperature is 80-84 ℃, the dripping time is 150min, and the temperature is kept for 120min after the dripping is finished; cooling to 70 ℃, synchronously dripping aqueous solution of tert-butyl hydroperoxide and ascorbic acid for 30min, preserving heat for 30min after dripping, cooling to 40 ℃, adding ammonia water, isomeric tridecanol polyoxyethylene ether (40 EO), defoaming agent and antiseptic bactericide, and stirring uniformly to obtain styrene-acrylic emulsion.
Example 3
The polyvinyl chloride hybrid styrene-acrylic emulsion comprises, by weight, 20.5 parts of deionized water, 0.1 part of sodium carbonate, 0.25 part of sodium dodecyl benzene sulfonate, 45 parts of polyvinyl chloride emulsion, 17.5 parts of styrene, 14.5 parts of butyl acrylate, 0.5 part of acrylamide, 0.6 part of acrylic acid, 0.1 part of vinyltrimethoxysilane, 0.2 part of ammonium persulfate, 0.05 part of tert-butyl hydroperoxide, 0.05 part of ascorbic acid, 0.1 part of a defoaming agent, 0.1 part of an antiseptic bactericide, 0.45 part of ammonia water and 0.2 part of isomeric tridecanol polyoxyethylene ether (40 EO);
the preparation method comprises the following steps:
(1) Weighing the components according to the weight parts of the raw materials;
(2) Evenly mixing deionized water with the formula amount of 60% and sodium dodecyl benzene sulfonate with the formula amount of 70% to obtain an emulsifier solution;
(3) Mixing acrylamide, vinyl trimethoxy silane, acrylic acid, styrene and butyl acrylate, adding the mixture into the emulsifier solution under stirring for 30min to obtain a dispersion;
(4) Adding 10% of formula amount of deionized water, polyvinyl chloride emulsion, sodium carbonate and the rest of sodium dodecyl benzene sulfonate into a reactor, heating to 78 ℃ under stirring, adding 10% of dispersion liquid and 20% of formula amount of ammonium persulfate into the reactor after the temperature is stable, reacting, and controlling the temperature at 82 ℃ after the temperature is raised, and keeping the temperature for 15min to obtain seed emulsion;
(5) Synchronously dripping the rest dispersion liquid and the rest ammonium persulfate into the seed emulsion, wherein the dripping temperature is 80-84 ℃, the dripping time is 150min, and the temperature is kept for 120min after the dripping is finished; cooling to 70 ℃, synchronously dripping aqueous solution of tert-butyl hydroperoxide and ascorbic acid for 30min, preserving heat for 30min after dripping, cooling to 40 ℃, adding ammonia water, isomeric tridecanol polyoxyethylene ether (40 EO), defoaming agent and antiseptic bactericide, and stirring uniformly to obtain styrene-acrylic emulsion.
The weight parts of the components in the raw materials of the polyvinyl chloride hybrid styrene-acrylic emulsion of the examples 1-3 are shown in the following table:
table 1 weight portions of the components in the raw materials of the polyvinyl chloride hybrid styrene-acrylic emulsion of examples 1-3
The performance of the styrene-acrylic emulsions of examples 1 to 3 is shown in the following table:
TABLE 2 Properties of the styrene-acrylic emulsions of examples 1 to 3
Note that: calcium ion stability (0.5% CaCl) 2 Solution), residual monomers, and the performance parameter information of the styrene-acrylic emulsion of the comparative example obtained from the market is shown in Table 1 according to the detection method of national standard GB/T20623-2006 emulsion for architectural coating.
Application example 1
The polyvinyl chloride hybrid styrene-acrylic emulsion prepared in example 1 is used as a base material to prepare a building interior wall coating, which comprises 38.7 parts of water, 1.0 part of alcohol ester twelve, 0.3 part of mineral oil defoamer and sodium salt dispersant: 0.5 part of propylene glycol, 0.1 part of wetting agent, 2.5 parts of rutile titanium dioxide, 25.0 parts of 800-mesh heavy calcium carbonate, 7.5 parts of water-washed kaolin, 13 parts of 4000-mesh calcined kaolin, 0.6 part of hydroxyethyl cellulose, 0.1 part of AMP-95, 10.0 parts of polyvinyl chloride hybrid styrene-acrylic emulsion prepared in example 1, 0.1 part of kasong bactericide and 0.1 part of thickener.
Application example 2
The polyvinyl chloride hybrid styrene-acrylic emulsion prepared in example 2 is used as a base material to prepare a building interior wall coating, which comprises 38.7 parts of water, 1.0 part of alcohol ester twelve, 0.3 part of mineral oil defoamer and sodium salt dispersant: 0.5 part of propylene glycol, 0.1 part of wetting agent, 2.5 parts of rutile titanium dioxide, 25.0 parts of 800-mesh heavy calcium carbonate, 7.5 parts of water-washed kaolin, 13 parts of 4000-mesh calcined kaolin, 0.6 part of hydroxyethyl cellulose, 0.1 part of AMP-95, 10.0 parts of polyvinyl chloride hybrid styrene-acrylic emulsion prepared in example 2, 0.1 part of kasong bactericide and 0.1 part of thickener.
Application example 3
The polyvinyl chloride hybrid styrene-acrylic emulsion prepared in example 3 is used as a base material to prepare a building interior wall coating, which comprises 38.7 parts of water, 1.0 part of alcohol ester twelve, 0.3 part of mineral oil defoamer and sodium salt dispersant: 0.5 part of propylene glycol, 0.1 part of wetting agent, 2.5 parts of rutile titanium dioxide, 25.0 parts of 800-mesh heavy calcium carbonate, 7.5 parts of water-washed kaolin, 13 parts of 4000-mesh calcined kaolin, 0.6 part of hydroxyethyl cellulose, 0.1 part of AMP-95, 10.0 parts of polyvinyl chloride hybrid styrene-acrylic emulsion prepared in example 3, 0.1 part of kasong bactericide and 0.1 part of thickener.
Comparative example 1 was applied: the only difference from application example 1 is that the styrene-acrylic emulsion is the styrene-acrylic emulsion of comparative example 1.
According to the specification of national standard GB/T9756-2018 "synthetic resin emulsion interior wall paint", the performance of the interior wall paint of application examples 1-3 is detected, and the test results are shown in the following table:
table 3 Performance test results of interior wall coating materials of application examples 1 to 3
As can be seen from the data in Table 3, the styrene-acrylic emulsion prepared by the embodiment of the invention is used as a base material, and the prepared paint film of the interior wall paint has high contrast ratio and high washing resistance, and the styrene-acrylic emulsion has excellent application performance, low cost and very high application prospect in the field of building paint.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (9)
1. The polyvinyl chloride hybrid styrene-acrylic emulsion is characterized by comprising, by weight, 20-40 parts of deionized water, 0.1-1 part of pH buffering agent, 0.1-1 part of anionic emulsifier, 20-60 parts of polyvinyl chloride emulsion, 25-45 parts of main monomer, 0.1-1 part of hydrophilic functional monomer, 0.1-1 part of carboxyl monomer, 0.02-0.2 part of silane coupling agent, 0.1-1 part of initiator, 0.01-0.1 part of post-elimination reducing agent, 0.01-0.1 part of defoaming agent, 0.01-0.5 part of antiseptic bactericide, 0.2-1 part of pH regulator and 0.1-1 part of nonionic surfactant;
the main monomer is at least one of styrene, methyl methacrylate, butyl acrylate and 2-ethylhexyl acrylate; the hydrophilic functional monomer is at least one of acrylonitrile, acrylamide and methacrylamide; the carboxyl monomer is at least one of acrylic acid, methacrylic acid, itaconic acid, maleic acid and fumaric acid.
2. The polyvinyl chloride hybrid styrene-acrylic emulsion according to claim 1, wherein the anionic emulsifier is at least one of sodium dodecyl benzene sulfonate, sodium isotridecyl alcohol polyoxyethylene ether sulfate and ammonium isotridecyl alcohol polyoxyethylene ether sulfate.
3. The polyvinyl chloride hybrid styrene-acrylic emulsion according to claim 1, wherein the polyvinyl chloride emulsion has a solid content of 29-31%, a pH of 7-8 and a viscosity of 1-200.
4. The polyvinyl chloride hybrid styrene-acrylic emulsion according to claim 1, wherein the silane coupling agent is at least one of vinyl triethoxysilane and vinyl trimethoxysilane, the initiator is at least one of ammonium persulfate and sodium persulfate, the post-oxidation agent is tert-butyl hydroperoxide and hydrogen peroxide, the post-oxidation reducing agent is ascorbic acid and sodium bicarbonate, the nonionic surfactant is isomeric tridecanol polyoxyethylene ether, the number of ethylene oxide in the isomeric tridecanol polyoxyethylene ether is 8-11 or 30-50, the pH buffering agent is at least one of sodium carbonate and sodium bicarbonate, and the pH regulator is at least one of ammonia water, sodium hydroxide and sodium bicarbonate.
5. The preparation method of the polyvinyl chloride hybrid styrene-acrylic emulsion is characterized by comprising the following steps of:
(1) Weighing the components according to the weight parts of the raw materials of the polyvinyl chloride hybrid styrene-acrylic emulsion according to any one of claims 1-4;
(2) Evenly mixing 50-70% of deionized water and 60-80% of anionic emulsifier to obtain an emulsifier solution;
(3) Mixing a hydrophilic functional monomer, a silane coupling agent, a carboxyl monomer and a main monomer, adding the mixture into the emulsifier solution, and dispersing to obtain a dispersion liquid;
(4) Adding deionized water with the formula amount of 5-15%, polyvinyl chloride emulsion, pH buffering agent and the rest anionic emulsifier into a reactor, heating to 76-80 ℃ under stirring, adding dispersion liquid with the formula amount of 5-20% and initiator with the formula amount of 10-40% into the reactor after the temperature is stable, reacting, and controlling the temperature at 80-84 ℃ after the temperature is raised, and keeping the temperature for 10-20min to obtain seed emulsion;
(5) Synchronously dripping the rest dispersion liquid and the rest initiator into the seed emulsion, wherein the dripping temperature is 80-84 ℃, the dripping time is 120-180min, and the temperature is kept for 90-150min after the dripping is finished; cooling to 68-70 ℃, synchronously dripping aqueous solutions of a post-oxidation reducing agent and a post-oxidation reducing agent for 30min, preserving heat for 30min after dripping, cooling to 40 ℃, adding a pH regulator, a nonionic surfactant, a defoaming agent and a preservative and sterilizing agent, and uniformly stirring to obtain the styrene-acrylic emulsion.
6. The method for preparing a polyvinyl chloride hybrid styrene-acrylic emulsion according to claim 5, wherein in the step (3), the dispersion time is 20-40min.
7. The application of the polyvinyl chloride hybrid styrene-acrylic emulsion, which is characterized in that the application of the polyvinyl chloride hybrid styrene-acrylic emulsion in building paint is as claimed in any one of claims 1 to 4.
8. The application of the polyvinyl chloride hybrid styrene-acrylic emulsion according to claim 7, wherein the building coating comprises, by weight, 30-40 parts of water, 0.1-1 part of alcohol ester, 0.1-0.5 part of mineral oil defoamer, 0.1-1 part of sodium salt dispersant, 0.1-1 part of propylene glycol, 0.1-0.2 part of wetting agent, 1-5 parts of rutile titanium dioxide, 20-30 parts of 800-mesh heavy calcium carbonate, 5-10 parts of water-washed kaolin, 10-15 parts of 4000-mesh calcined kaolin, 0.1-1 part of hydroxyethyl cellulose, 0.05-0.2 part of AMP-95, 5-15 parts of polyvinyl chloride hybrid styrene-acrylic emulsion, 0.05-0.2 part of kasong bactericide and 0.05-0.2 part of thickener.
9. The application of the polyvinyl chloride hybrid styrene-acrylic emulsion according to claim 7, wherein the building coating comprises, by weight, 38.7 parts of water, 1.0 part of alcohol ester, 0.3 part of mineral oil defoamer and sodium salt dispersant: 0.5 part of propylene glycol, 0.1 part of wetting agent, 2.5 parts of rutile titanium dioxide, 25.0 parts of 800-mesh heavy calcium carbonate, 7.5 parts of water-washed kaolin, 13 parts of 4000-mesh calcined kaolin, 0.6 part of hydroxyethyl cellulose, 0.1 part of AMP-95, 10.0 parts of polyvinyl chloride hybrid styrene-acrylic emulsion, 0.1 part of kasong bactericide and 0.1 part of thickener.
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| WO2014019109A1 (en) * | 2012-08-02 | 2014-02-06 | Tian Yuenan | Processing modifier used for polyvinyl chloride pipe and pipe fitting |
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