CN112979864A - Modified acrylate water-based wood paint emulsion and preparation method thereof - Google Patents
Modified acrylate water-based wood paint emulsion and preparation method thereof Download PDFInfo
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- 239000000839 emulsion Substances 0.000 title claims abstract description 57
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 51
- 239000002023 wood Substances 0.000 title claims abstract description 34
- 238000002360 preparation method Methods 0.000 title claims abstract description 20
- 150000001252 acrylic acid derivatives Chemical class 0.000 title claims abstract description 18
- 239000003973 paint Substances 0.000 title claims description 6
- 238000004945 emulsification Methods 0.000 title description 2
- 239000003999 initiator Substances 0.000 claims abstract description 57
- 238000006243 chemical reaction Methods 0.000 claims abstract description 42
- SOGAXMICEFXMKE-UHFFFAOYSA-N Butylmethacrylate Chemical compound CCCCOC(=O)C(C)=C SOGAXMICEFXMKE-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000004922 lacquer Substances 0.000 claims abstract description 28
- -1 acrylic ester Chemical class 0.000 claims abstract description 26
- 239000012874 anionic emulsifier Substances 0.000 claims abstract description 20
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 20
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims abstract description 16
- 235000011114 ammonium hydroxide Nutrition 0.000 claims abstract description 16
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims abstract description 15
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 15
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 claims abstract description 15
- OMNKZBIFPJNNIO-UHFFFAOYSA-N n-(2-methyl-4-oxopentan-2-yl)prop-2-enamide Chemical compound CC(=O)CC(C)(C)NC(=O)C=C OMNKZBIFPJNNIO-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000006172 buffering agent Substances 0.000 claims abstract description 4
- 238000003756 stirring Methods 0.000 claims description 37
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 22
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 14
- ULUAUXLGCMPNKK-UHFFFAOYSA-N Sulfobutanedioic acid Chemical compound OC(=O)CC(C(O)=O)S(O)(=O)=O ULUAUXLGCMPNKK-UHFFFAOYSA-N 0.000 claims description 14
- 238000010438 heat treatment Methods 0.000 claims description 14
- 229920000570 polyether Polymers 0.000 claims description 14
- 159000000000 sodium salts Chemical class 0.000 claims description 14
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical group [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 12
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Substances [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 12
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 11
- 239000000872 buffer Substances 0.000 claims description 9
- LCPVQAHEFVXVKT-UHFFFAOYSA-N 2-(2,4-difluorophenoxy)pyridin-3-amine Chemical group NC1=CC=CN=C1OC1=CC=C(F)C=C1F LCPVQAHEFVXVKT-UHFFFAOYSA-N 0.000 claims description 8
- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Substances [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 7
- 230000001804 emulsifying effect Effects 0.000 claims description 7
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 6
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 6
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 5
- 229910021389 graphene Inorganic materials 0.000 abstract description 5
- 239000002096 quantum dot Substances 0.000 abstract description 5
- 239000000243 solution Substances 0.000 description 27
- 239000003054 catalyst Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000005034 decoration Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 description 2
- CUVLMZNMSPJDON-UHFFFAOYSA-N 1-(1-butoxypropan-2-yloxy)propan-2-ol Chemical compound CCCCOCC(C)OCC(C)O CUVLMZNMSPJDON-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000007770 graphite material Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000010526 radical polymerization reaction Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
Classifications
-
- 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
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
- C08F220/1804—C4-(meth)acrylate, e.g. butyl (meth)acrylate, isobutyl (meth)acrylate or tert-butyl (meth)acrylate
-
- 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
-
- 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
- C09D133/00—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 at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
- C09D133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C09D133/10—Homopolymers or copolymers of methacrylic acid esters
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Inorganic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The invention relates to a modified acrylate waterborne wood lacquer emulsion and a preparation method thereof, wherein the emulsion comprises the following components in parts by weight: 50-100 parts of graphene quantum dots, 2-4 parts of an anionic emulsifier, 1-2 parts of a buffering agent, 4-7 parts of ammonia water and 5-8 parts of a silane coupling agent; the emulsion comprises 3.5-5 parts of an anionic emulsifier, 200 parts of butyl acrylate 170-5 parts, 230 parts of butyl methacrylate 205-45 parts, 30-45 parts of acrylic acid, 40-65 parts of diacetone acrylamide and 220 parts of water 185-220. During preparation, adding the emulsion and an initiator into a reaction kettle containing graphene quantum dots and other components, and controlling the temperature to perform reaction; the acrylic ester aqueous wood lacquer emulsion is improved by utilizing the advantages of high toughness, high strength, good elasticity and the like of the graphene quantum dot material, so that the acrylic ester aqueous wood lacquer emulsion has excellent adhesion resistance and wear resistance.
Description
Technical Field
The invention belongs to the technical field of coatings, and relates to a modified acrylate waterborne wood lacquer emulsion and a preparation method thereof.
Background
At present, the amount of the acrylic ester emulsion used as a water-based wood coating in home decoration is increased day by day, and the wood coating is a coating for interior decoration, is mainly coated on the surfaces of wood furniture and other wood ware, and is used for improving the surface smoothness of the furniture to make the furniture more beautiful. The acrylic ester emulsion coating has the advantages of quick drying, good water resistance and low price, but the molecular structure formed by the acrylic ester emulsion is linear due to the free radical polymerization, so the wood lacquer prepared by the acrylic ester emulsion has the defects of poor wear resistance, poor high-temperature tack and poor blocking resistance of a lacquer film, and the product has low fullness after being painted, is not suitable for high-grade wood ware and has narrow application range.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a modified acrylate aqueous wood lacquer emulsion and a preparation method thereof.
The technical scheme of the invention is as follows:
the modified acrylic ester water-based wood paint emulsion comprises the following components in parts by weight: 50-100 parts of graphene quantum dots, 2-4 parts of an anionic emulsifier, 1-2 parts of a buffering agent, 4-7 parts of ammonia water and 5-8 parts of a silane coupling agent; the emulsion comprises 3.5-5 parts of an anionic emulsifier, 200 parts of butyl acrylate 170-5 parts, 230 parts of butyl methacrylate 205-45 parts, 30-45 parts of acrylic acid, 40-65 parts of diacetone acrylamide and 220 parts of water 185-5; the initiator solution I comprises 1-1.5 parts of initiator; the initiator solution II comprises 1-2 parts of an initiator.
The graphene quantum dots are two-dimensional crystals which are stripped from graphite materials and consist of carbon atoms and have only one layer of atomic thickness, are the thinnest materials and the toughest materials, and have the fracture strength 200 times higher than that of the best steel; meanwhile, the graphene quantum dot material has good elasticity, the stretching amplitude can reach 20% of the size of the graphene quantum dot material, and the graphene quantum dot material is the thinnest material with the highest strength in the natural world at present.
Further, the anionic emulsifier comprises alkyl ether sulfate, alkylphenol polyether sulfosuccinic acid monoester sodium salt.
Further, the initiator is sodium persulfate or ammonium persulfate.
Further, the buffer is sodium bicarbonate or sodium carbonate.
A preparation method of modified acrylate waterborne wood lacquer emulsion comprises the following steps: adding 100-150 parts of water, 50-100 parts of graphene quantum dots, 2-4 parts of alkylphenol polyether sulfosuccinic acid monoester sodium salt and 1-2 parts of buffer agent into a reaction kettle, stirring, heating, stopping heating when the temperature is increased to 85-88 ℃, and keeping the temperature; adding the initiator solution I into a reaction kettle, stirring, then simultaneously dropwise adding the emulsion and the initiator solution II into the reaction kettle, stirring while dropwise adding, after 4-4.5h, finishing dropwise adding, preserving heat for 1-1.5h, and cooling the reaction kettle; when the temperature is reduced to 35-40 ℃, adding 4-7 parts of ammonia water, 5-8 parts of silane coupling agent and 5-20 parts of water, and stirring for 30-40min to obtain the product.
Further, the preparation method of the emulsion comprises the following steps: adding 185-220 parts of water, 3.5-5 parts of anionic emulsifier, 170-200 parts of butyl acrylate, 205-230 parts of butyl methacrylate, 30-45 parts of acrylic acid and 40-65 parts of diacetone acrylamide into an emulsifying cylinder in sequence, and stirring for 35-45min to obtain the emulsion.
Further, the initiator solution I is obtained by dissolving 1-1.5 parts of initiator in 15-25 parts of water; the initiator solution II is obtained by dissolving 1-2 parts of initiator in 50-75 parts of water.
The invention has the beneficial effects that:
the modified acrylate waterborne wood lacquer emulsion provided by the invention comprises an emulsion containing components such as acrylate, and also comprises components such as graphene quantum dots, an initiator, ammonia water and the like; during preparation, the emulsion and the initiator are added into a reaction kettle containing graphene quantum dots and other components, and the reaction is carried out under the condition of controlling the temperature; the acrylic ester aqueous wood lacquer emulsion is improved by utilizing the advantages of high toughness, high strength, good elasticity and the like of the graphene quantum dot material, and the modified acrylic ester aqueous wood lacquer emulsion prepared by the method has excellent adhesion resistance and wear resistance.
Detailed Description
The technical solutions will be described clearly and completely in the following with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order that the invention may be further understood, reference will now be made to the following examples.
Example 1
A modified acrylate waterborne wood lacquer emulsion comprises: 100 parts of graphene quantum dots, 4.5 parts of alkyl ether sulfate anionic emulsifier, 185 parts of butyl acrylate, 210 parts of butyl methacrylate, 35 parts of acrylic acid, 50 parts of diacetone acrylamide, 3.2 parts of alkylphenol polyether sulfosuccinic acid monoester sodium salt, 1.2 parts of sodium bicarbonate, 4 parts of ammonia water, 5 parts of silane coupling agent, 3 parts of ammonium persulfate initiator and 388 parts of water.
The preparation method comprises the following steps:
firstly, dissolving 1 part of ammonium persulfate initiator in 20 parts of water to obtain an initiator solution I; dissolving 2 parts of ammonium persulfate initiator in 58 parts of water to obtain initiator solution II; sequentially adding 200 parts of water, 4.5 parts of alkyl ether sulfate anionic emulsifier, 185 parts of butyl acrylate, 210 parts of butyl methacrylate, 35 parts of acrylic acid and 50 parts of diacetone acrylamide into an emulsifying cylinder, and stirring for 45min to obtain an emulsion;
secondly, adding 100 parts of water, 100 parts of graphene quantum dots, 3.2 parts of alkylphenol polyether sulfosuccinic acid monoester sodium salt and 1.2 parts of sodium bicarbonate buffer into a reaction kettle, stirring and heating; stopping heating when the temperature rises to 85-88 ℃, adding the initiator solution I into the reaction kettle and stirring, then simultaneously dropwise adding the emulsion and the initiator solution II into the reaction kettle while stirring, and controlling the temperature in the reaction kettle to be 85-88 ℃; after 4.5h, finishing the dropwise adding, preserving the heat for 1.5h, and then cooling the reaction kettle; and when the temperature in the reaction kettle is reduced to 35-40 ℃, adding 4 parts of ammonia water, 5 parts of silane coupling agent and 10 parts of water, and stirring for 40min to obtain the catalyst.
Example 2
A modified acrylate waterborne wood lacquer emulsion comprises: 60 parts of graphene quantum dots, 4.5 parts of alkyl ether sulfate anionic emulsifier, 185 parts of butyl acrylate, 210 parts of butyl methacrylate, 35 parts of acrylic acid, 50 parts of diacetone acrylamide, 3.2 parts of alkylphenol polyether sulfosuccinic acid monoester sodium salt, 1.2 parts of sodium bicarbonate, 4 parts of ammonia water, 5 parts of silane coupling agent, 3 parts of ammonium persulfate initiator and 428 parts of water.
The preparation method comprises the following steps:
firstly, dissolving 1 part of ammonium persulfate initiator in 20 parts of water to obtain an initiator solution I; dissolving 2 parts of ammonium persulfate initiator in 58 parts of water to obtain initiator solution II; sequentially adding 200 parts of water, 4.5 parts of alkyl ether sulfate anionic emulsifier, 185 parts of butyl acrylate, 210 parts of butyl methacrylate, 35 parts of acrylic acid and 50 parts of diacetone acrylamide into an emulsifying cylinder, and stirring for 40min to obtain an emulsion;
secondly, adding 140 parts of water, 60 parts of graphene quantum dots, 3.2 parts of alkylphenol polyether sulfosuccinic acid monoester sodium salt and 1.2 parts of sodium bicarbonate buffer agent into a reaction kettle, stirring and heating; stopping heating when the temperature rises to 85-88 ℃, adding the initiator solution I into the reaction kettle and stirring, then simultaneously dropwise adding the emulsion and the initiator solution II into the reaction kettle while stirring, and controlling the temperature in the reaction kettle to be 85-88 ℃; after 4h, finishing the dropwise adding, and cooling the reaction kettle after keeping the temperature for 1 h; and when the temperature in the reaction kettle is reduced to 35-40 ℃, adding 4 parts of ammonia water, 5 parts of silane coupling agent and 10 parts of water, and stirring for 35min to obtain the catalyst.
Example 3
A modified acrylate waterborne wood lacquer emulsion comprises: 80 parts of graphene quantum dots, 4 parts of alkyl ether sulfate anionic emulsifier, 185 parts of butyl acrylate, 220 parts of butyl methacrylate, 40 parts of acrylic acid, 50 parts of diacetone acrylamide, 3 parts of alkylphenol polyether sulfosuccinic acid monoester sodium salt, 1.5 parts of sodium carbonate, 6 parts of ammonia water, 6 parts of silane coupling agent, 2.7 parts of sodium persulfate and 425 parts of water.
The preparation method comprises the following steps:
firstly, 1.2 parts of sodium persulfate is dissolved in 20 parts of water to obtain an initiator solution I; dissolving 1.5 parts of sodium persulfate in 65 parts of water to obtain an initiator solution II; sequentially adding 200 parts of water, 4 parts of alkyl ether sulfate anionic emulsifier, 185 parts of butyl acrylate, 220 parts of butyl methacrylate, 40 parts of acrylic acid and 50 parts of diacetone acrylamide into an emulsifying cylinder, and stirring for 40min to obtain an emulsion;
secondly, adding 130 parts of water, 80 parts of graphene quantum dots, 3 parts of alkylphenol polyether sulfosuccinic acid monoester sodium salt and 1.5 parts of sodium carbonate into a reaction kettle, stirring and heating; stopping heating when the temperature rises to 85-88 ℃, adding the initiator solution I into the reaction kettle and stirring, then simultaneously dropwise adding the emulsion and the initiator solution II into the reaction kettle while stirring, and controlling the temperature in the reaction kettle to be 85-88 ℃; after 4.2h, finishing the dropwise adding, and after preserving the heat for 1.2h, cooling the reaction kettle; and when the temperature in the reaction kettle is reduced to 35-40 ℃, adding 6 parts of ammonia water, 6 parts of silane coupling agent and 10 parts of water, and stirring for 35min to obtain the catalyst.
Example 4
A modified acrylate waterborne wood lacquer emulsion comprises: 50 parts of graphene quantum dots, 3.5 parts of alkyl ether sulfate anionic emulsifier, 170 parts of butyl acrylate, 205 parts of butyl methacrylate, 30 parts of acrylic acid, 40 parts of diacetone acrylamide, 2 parts of alkylphenol polyether sulfosuccinic acid monoester sodium salt, 1 part of sodium carbonate buffer, 4 parts of ammonia water, 5 parts of silane coupling agent, 3 parts of ammonium persulfate initiator and 305 parts of water.
The preparation method comprises the following steps:
firstly, dissolving 1 part of ammonium persulfate initiator in 15 parts of water to obtain an initiator solution I; dissolving 2 parts of ammonium persulfate initiator in 50 parts of water to obtain initiator solution II; adding 185 parts of water, 3.5 parts of alkyl ether sulfate anionic emulsifier, 170 parts of butyl acrylate, 205 parts of butyl methacrylate, 30 parts of acrylic acid and 40 parts of diacetone acrylamide into an emulsifying cylinder in sequence, and stirring for 35min to obtain an emulsion;
secondly, adding 100 parts of water, 50 parts of graphene quantum dots, 2 parts of alkylphenol polyether sulfosuccinic acid monoester sodium salt and 1 part of sodium carbonate buffer into a reaction kettle, stirring and heating; stopping heating when the temperature rises to 85-88 ℃, adding the initiator solution I into the reaction kettle and stirring, then simultaneously dropwise adding the emulsion and the initiator solution II into the reaction kettle while stirring, and controlling the temperature in the reaction kettle to be 85-88 ℃; after 4h, finishing the dropwise adding, and cooling the reaction kettle after keeping the temperature for 1 h; and when the temperature in the reaction kettle is reduced to 35 ℃, adding 4 parts of ammonia water, 5 parts of silane coupling agent and 5 parts of water, and stirring for 30min to obtain the catalyst.
Example 5
A modified acrylate waterborne wood lacquer emulsion comprises: 90 parts of graphene quantum dots, 5 parts of alkyl ether sulfate anionic emulsifier, 200 parts of butyl acrylate, 230 parts of butyl methacrylate, 45 parts of acrylic acid, 65 parts of diacetone acrylamide, 4 parts of alkylphenol polyether sulfosuccinic acid monoester sodium salt, 2 parts of sodium bicarbonate buffer, 7 parts of ammonia water, 8 parts of silane coupling agent, 3.5 parts of sodium persulfate initiator and 490 parts of water.
The preparation method comprises the following steps:
firstly, 1.5 parts of sodium persulfate initiator is dissolved in 25 parts of water to obtain an initiator solution I; dissolving 2 parts of sodium persulfate initiator in 75 parts of water to obtain an initiator solution II; adding 220 parts of water, 5 parts of alkyl ether sulfate anionic emulsifier, 200 parts of butyl acrylate, 230 parts of butyl methacrylate, 45 parts of acrylic acid and 65 parts of diacetone acrylamide into an emulsifying cylinder in sequence, and stirring for 45min to obtain an emulsion;
secondly, adding 150 parts of water, 90 parts of graphene quantum dots, 4 parts of alkylphenol polyether sulfosuccinic acid monoester sodium salt and 2 parts of sodium bicarbonate buffer into a reaction kettle, stirring and heating; stopping heating when the temperature rises to 85-88 ℃, adding the initiator solution I into the reaction kettle and stirring, then simultaneously dropwise adding the emulsion and the initiator solution II into the reaction kettle while stirring, and controlling the temperature in the reaction kettle to be 85-88 ℃; after 4.5h, finishing the dropwise adding, preserving the heat for 1.5h, and then cooling the reaction kettle; and when the temperature in the reaction kettle is reduced to 40 ℃, adding 7 parts of ammonia water, 8 parts of silane coupling agent and 20 parts of water, and stirring for 40min to obtain the catalyst.
Comparative example
Except that the dosage of the graphene quantum dots is 0, other components and the preparation method of the acrylic ester water-based wood lacquer emulsion are similar to those of the scheme in any one of the embodiments 1-5.
Test examples
The modified acrylic ester aqueous wood lacquer emulsion obtained in the embodiment 1 and the embodiment 2 and the emulsion obtained in the comparative example are respectively prepared into lacquer, and the lacquer preparation process comprises the following steps: adding the emulsion into a cylinder, starting stirring at a medium speed, then sequentially adding TEGO810, BYK024, BYK349, TEGO482 and TEGO 2050D into the cylinder, and keeping the speed to be free of oil pits; then adding DPM, DPNB, water and 299 thickening agent in sequence, stirring for 10min, filtering and packaging.
The prepared woodenware paint is tested for blocking resistance by adopting GB/T23999-2009 waterborne woodenware paint for indoor decoration; the wear resistance is tested by using a grinding wheel of a CS-10 model by adopting a method specified in ISO 7784-2: 1997; the test results are shown in the following table:
| detecting items | Example 1 | Example 2 | Comparative example |
| Blocking resistance (500g, 60 ℃/4h) | MM：A-0 | MM：B-2 | MM：E-5 |
| Abrasion resistance (750g/500r) g | 0.0004 | 0.01 | 0.02 |
The test results show that: compared with the existing wood lacquer emulsion which is not modified, the modified acrylic ester aqueous wood lacquer emulsion prepared by the components and the method has remarkable advantages in anti-blocking property and wear resistance.
Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that various changes, modifications and substitutions can be made without departing from the spirit and scope of the present invention. Any modification, equivalent replacement, or modification made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The modified acrylic ester water-based wood paint emulsion is characterized by comprising the following components in parts by weight: 50-100 parts of graphene quantum dots, 2-4 parts of an anionic emulsifier, 1-2 parts of a buffering agent, 4-7 parts of ammonia water and 5-8 parts of a silane coupling agent; the emulsion comprises 3.5-5 parts of an anionic emulsifier, 200 parts of butyl acrylate 170-5 parts, 230 parts of butyl methacrylate 205-45 parts, 30-45 parts of acrylic acid, 40-65 parts of diacetone acrylamide and 220 parts of water 185-5; the initiator solution I comprises 1-1.5 parts of initiator; the initiator solution II comprises 1-2 parts of an initiator.
2. The modified acrylate waterborne wood lacquer emulsion according to claim 1, wherein the anionic emulsifier comprises alkyl ether sulfate, alkyl phenol polyether sulfosuccinic acid monoester sodium salt.
3. The modified acrylate waterborne wood lacquer emulsion according to claim 1, wherein the initiator is sodium persulfate or ammonium persulfate.
4. The modified acrylate waterborne wood lacquer emulsion according to claim 1, wherein the buffering agent is sodium bicarbonate or sodium carbonate.
5. The preparation method of the modified acrylate waterborne wood lacquer emulsion of any one of claims 1 to 4, which is characterized by comprising the following steps: adding 100-150 parts of water, 50-100 parts of graphene quantum dots, 2-4 parts of alkylphenol polyether sulfosuccinic acid monoester sodium salt and 1-2 parts of buffer agent into a reaction kettle, stirring, heating, stopping heating when the temperature is increased to 85-88 ℃, and keeping the temperature; adding the initiator solution I into a reaction kettle, stirring, then simultaneously dropwise adding the emulsion and the initiator solution II into the reaction kettle, stirring while dropwise adding, after 4-4.5h, finishing dropwise adding, preserving heat for 1-1.5h, and cooling the reaction kettle; when the temperature is reduced to 35-40 ℃, adding 4-7 parts of ammonia water, 5-8 parts of silane coupling agent and 5-20 parts of water, and stirring for 30-40min to obtain the product.
6. The preparation method of the modified acrylate waterborne wood lacquer emulsion according to claim 5, wherein the preparation method of the emulsion comprises the following steps: adding 185-220 parts of water, 3.5-5 parts of anionic emulsifier, 170-200 parts of butyl acrylate, 205-230 parts of butyl methacrylate, 30-45 parts of acrylic acid and 40-65 parts of diacetone acrylamide into an emulsifying cylinder in sequence, and stirring for 35-45min to obtain the emulsion.
7. The preparation method of the modified acrylate waterborne wood lacquer emulsion according to claim 5, wherein the initiator solution I is obtained by dissolving 1-1.5 parts of initiator in 15-25 parts of water; the initiator solution II is obtained by dissolving 1-2 parts of initiator in 50-75 parts of water.
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