CN115232519A - Styrene-acrylic emulsion coating and preparation method thereof - Google Patents
Styrene-acrylic emulsion coating and preparation method thereof Download PDFInfo
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- CN115232519A CN115232519A CN202211004802.0A CN202211004802A CN115232519A CN 115232519 A CN115232519 A CN 115232519A CN 202211004802 A CN202211004802 A CN 202211004802A CN 115232519 A CN115232519 A CN 115232519A
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- 239000000839 emulsion Substances 0.000 title claims abstract description 76
- 229920001909 styrene-acrylic polymer Polymers 0.000 title claims abstract description 48
- 239000011248 coating agent Substances 0.000 title claims abstract description 23
- 238000000576 coating method Methods 0.000 title claims abstract description 23
- 238000002360 preparation method Methods 0.000 title claims description 19
- 239000003999 initiator Substances 0.000 claims abstract description 45
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 38
- 239000008367 deionised water Substances 0.000 claims abstract description 26
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 26
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000003995 emulsifying agent Substances 0.000 claims abstract description 13
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 12
- 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 8
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 8
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000006243 chemical reaction Methods 0.000 claims description 38
- LCPVQAHEFVXVKT-UHFFFAOYSA-N 2-(2,4-difluorophenoxy)pyridin-3-amine Chemical compound NC1=CC=CN=C1OC1=CC=C(F)C=C1F LCPVQAHEFVXVKT-UHFFFAOYSA-N 0.000 claims description 22
- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Substances [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 claims description 22
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 14
- 238000003756 stirring Methods 0.000 claims description 14
- 238000010438 heat treatment Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 8
- 239000005543 nano-size silicon particle Substances 0.000 claims description 7
- 235000012239 silicon dioxide Nutrition 0.000 claims description 7
- 238000001514 detection method Methods 0.000 claims description 5
- 238000005070 sampling Methods 0.000 claims description 5
- 239000012874 anionic emulsifier Substances 0.000 claims description 4
- 230000001804 emulsifying effect Effects 0.000 claims description 4
- 239000012875 nonionic emulsifier Substances 0.000 claims description 4
- 230000035484 reaction time Effects 0.000 claims description 4
- ONZVXXZLUWONEC-UHFFFAOYSA-N C(C)OC(C)O.S(=O)(=O)(O)C(C(=O)O)CC(=O)O Chemical group C(C)OC(C)O.S(=O)(=O)(O)C(C(=O)O)CC(=O)O ONZVXXZLUWONEC-UHFFFAOYSA-N 0.000 claims description 2
- QXNVGIXVLWOKEQ-UHFFFAOYSA-N Disodium Chemical class [Na][Na] QXNVGIXVLWOKEQ-UHFFFAOYSA-N 0.000 claims description 2
- 125000000373 fatty alcohol group Chemical group 0.000 claims description 2
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 2
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 2
- DZSVIVLGBJKQAP-UHFFFAOYSA-N 1-(2-methyl-5-propan-2-ylcyclohex-2-en-1-yl)propan-1-one Chemical group CCC(=O)C1CC(C(C)C)CC=C1C DZSVIVLGBJKQAP-UHFFFAOYSA-N 0.000 claims 1
- IRLPACMLTUPBCL-KQYNXXCUSA-N 5'-adenylyl sulfate Chemical compound C1=NC=2C(N)=NC=NC=2N1[C@@H]1O[C@H](COP(O)(=O)OS(O)(=O)=O)[C@@H](O)[C@H]1O IRLPACMLTUPBCL-KQYNXXCUSA-N 0.000 claims 1
- 229910052708 sodium Inorganic materials 0.000 claims 1
- 239000011734 sodium Substances 0.000 claims 1
- 239000002313 adhesive film Substances 0.000 description 7
- 238000002474 experimental method Methods 0.000 description 5
- 239000002023 wood Substances 0.000 description 5
- 239000002245 particle Substances 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 230000000977 initiatory effect Effects 0.000 description 3
- 239000003973 paint Substances 0.000 description 3
- FWFUWXVFYKCSQA-UHFFFAOYSA-M sodium;2-methyl-2-(prop-2-enoylamino)propane-1-sulfonate Chemical group [Na+].[O-]S(=O)(=O)CC(C)(C)NC(=O)C=C FWFUWXVFYKCSQA-UHFFFAOYSA-M 0.000 description 3
- 238000004381 surface treatment Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- -1 acrylic ester Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007720 emulsion polymerization reaction Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 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
- 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
-
- 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
- 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
- C08F2/30—Emulsion polymerisation with the aid of emulsifying agents non-ionic
-
- 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
- C09D125/00—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 an aromatic carbocyclic ring; Coating compositions based on derivatives of such polymers
- C09D125/02—Homopolymers or copolymers of hydrocarbons
- C09D125/04—Homopolymers or copolymers of styrene
- C09D125/08—Copolymers of styrene
- C09D125/14—Copolymers of styrene with unsaturated 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
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
Abstract
The invention provides a styrene-acrylic emulsion coating which comprises the following components in parts by weight: 55-65 parts of deionized water, 1.5-2.3 parts of emulsifier, 0.3-0.4 part of initiator, 19-24 parts of butyl acrylate, 35-40 parts of styrene, 0.9-1.2 parts of acrylamide, 0.9-1.2 parts of acrylic acid and 0.4-1 part of silane coupling agent.
Description
Technical Field
The invention relates to the technical field of chemical industry, in particular to a styrene-acrylic emulsion coating and a preparation method thereof.
Background
The styrene-acrylic emulsion (styrene-acrylic ester emulsion) is prepared by emulsion copolymerization of styrene and acrylic ester monomers. The styrene-acrylic emulsion is a system which is researched more in emulsion polymerization and is one of ten non-crosslinked emulsions with important industrial application value in the world nowadays.
The styrene-acrylic emulsion can be applied to water-based industrial paint, surface treatment of artware and the like, under the condition, the styrene-acrylic emulsion is required to have high gloss and high strength, but most styrene-acrylic emulsions in the industry generally do not meet the technical requirement, the high gloss and high strength emulsion in the industry at present is pure acrylic emulsion or silicone acrylic emulsion with higher price, and the cost is higher by adopting the two emulsions.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a styrene-acrylic emulsion coating and a preparation method thereof, which solve the technical problems that the effect of high light and high strength cannot be achieved by adopting common styrene-acrylic emulsion and the price of pure acrylic emulsion or silicone-acrylic emulsion is high in the background art.
The technical purpose of the invention is realized by the following technical scheme:
the styrene-acrylic emulsion coating comprises the following components in parts by weight: 55-65 parts of deionized water, 1.5-2.3 parts of emulsifier, 0.3-0.4 part of initiator, 19-24 parts of butyl acrylate, 35-40 parts of styrene, 0.9-1.2 parts of acrylamide, 0.9-1.2 parts of acrylic acid, 0.4-1 part of silane coupling agent and 1.8-2.2 parts of nano silicon dioxide.
Further, the emulsifier comprises at least one of an anionic emulsifier, a nonionic emulsifier and a reactive emulsifier, wherein the anionic emulsifier is sulfosuccinic acid ethoxy ethanol monoester disodium salt (DES-20), the nonionic emulsifier is fatty alcohol polyoxyethylene ether (390K), and the reactive emulsifier is 2-acrylamido-2-methyl propane sulfonic acid sodium salt (AMPS).
Further, the initiator comprises a first initiator and a second initiator, and the first initiator and the second initiator are sodium persulfate solutions with different concentrations.
The invention also provides a preparation method of the styrene-acrylic emulsion coating, which comprises the following steps:
step 1: adding 35-40 parts of deionized water into the reaction kettle, starting stirring, continuously adding 0.7-1.1 parts of emulsifier, and starting heating;
step 2: in the temperature rise process of the reaction kettle, adding 18-23 parts of deionized water, 0.8-1.1 part of emulsifier, 0.9-1.2 parts of acrylamide, 19-24 parts of butyl acrylate, 35-40 parts of styrene, 0.9-1.2 parts of acrylic acid, 0.4-1 part of silane coupling agent and 1.8-2.2 parts of nano silicon dioxide into an emulsifying cylinder, and stirring to form a pre-emulsion;
and step 3: preparation of an initiator: the emulsion initiator is sodium persulfate, wherein the initiator is dissolved in 1-2 parts of deionized water by 0.2-0.24 part of sodium persulfate, and the initiator is dissolved in 5-7 parts of deionized water by 0.1-0.2 part of sodium persulfate;
and 4, step 4: when the temperature of the reaction kettle reaches 83-86 ℃, adding 4.3% of the total amount of the prepared pre-emulsion into the reaction kettle, adding the prepared initiator I after 2 minutes, keeping the reaction time to be 10-15 minutes, beginning to dropwise add the pre-emulsion and the initiator II at a constant speed after complete reaction, and dropwise adding for 3-3.5 hours;
and 5: after the reaction is finished, the temperature is reduced to below 50 ℃, the pH value is adjusted to 7-9, and sampling detection is carried out after stirring for 10-15 minutes.
Further, in the step 4, the temperature of the reaction kettle is raised to 83 ℃, the reaction time is kept for 10 minutes, and the dropping time is 3 hours.
Further, in step 5, the pH was adjusted to 7 and the stirring time was 10 minutes.
Compared with the prior art, the invention has the following beneficial effects:
the invention adopts a simple technical means to prepare the styrene-acrylic emulsion coating, the styrene-acrylic emulsion has lower price compared with pure acrylic emulsion or silicone-acrylic emulsion, and has better glossiness and strength compared with other styrene-acrylic emulsions, and can meet the use requirements of water-based industrial paint, surface treatment of artware and the like.
Detailed Description
The technical solution of the present invention is further illustrated by the following examples.
The first embodiment is as follows: the styrene-acrylic emulsion coating comprises the following components in parts by weight:
a reaction kettle: 36 kg of deionized water
DES-20 kg
390K 0.1 kg
Initiating agent one: 1.7 kg of deionized water
Sodium persulfate 220 g
And (2) initiator II: 6 kg of deionized water
170 g of sodium persulfate.
A preparation method of a styrene-acrylic emulsion coating comprises the following steps:
step 1: adding 36 kg of deionized water into the reaction kettle, starting stirring, continuously adding 1 kg of DES-20 and 0.1 kg of 390K, and starting heating.
And 2, step: during the heating process of the reaction kettle, 20 kg of ionized water, 1 kg of DES-20,1 kg of acrylamide, 24 kg of butyl acrylate, 35 kg of styrene, 1 kg of acrylic acid, 0.5 kg of silane coupling agent and 2 kg of nano silicon dioxide are added into an emulsifying cylinder.
And 3, step 3: preparation of an initiator: the emulsion initiator is sodium persulfate, 220 g of sodium persulfate is dissolved by 1.7 kg of ionic water for the initiator, and 170 g of sodium persulfate is dissolved by 6 kg of deionized water for the initiator.
And 4, step 4: when the temperature of the reaction kettle reaches 83 ℃, 4.3 percent of the total amount of the prepared pre-emulsion is added into the reaction kettle, the prepared initiator I is added after 2 minutes, the reaction is kept for 10 minutes, and after the complete reaction, the pre-emulsion and the initiator II are dropwise added at a constant speed for 3 hours.
And 5: after the reaction is finished, the temperature is reduced to below 50 ℃, the pH value is adjusted to 7, and sampling detection is carried out after stirring for 10 minutes.
The second embodiment: the styrene-acrylic emulsion coating comprises the following components in parts by weight:
a reaction kettle: 36 kg of deionized water
DES-20.9 kg
390K 0.1 kg
Initiating agent one: 1.7 kg of deionized water
Sodium persulfate 220 g
And (2) initiator II: 6 kg of deionized water
170 g of sodium persulfate.
A preparation method of a styrene-acrylic emulsion coating comprises the following steps:
step 1: adding 36 kg of deionized water into the reaction kettle, starting stirring, continuously adding 0.9 kg of DES-20 and 0.1 kg of 390K, and starting heating.
And 2, step: during the heating process of the reaction kettle, 20 kg of ionized water, 0.95 kg of DES-20,1 kg of acrylamide, 19 kg of butyl acrylate, 40 kg of styrene, 1 kg of acrylic acid, 0.6 kg of silane coupling agent and 2 kg of nano silicon dioxide are added into an emulsifying cylinder.
And step 3: preparation of an initiator: the emulsion initiator is sodium persulfate, 220 g of sodium persulfate is dissolved by 1.7 kg of ionized water for the initiator, and 170 g of sodium persulfate is dissolved by 6 kg of deionized water for the initiator.
And 4, step 4: when the temperature of the reaction kettle reaches 83 ℃, 4.3 percent of the total amount of the prepared pre-emulsion is added into the reaction kettle, the prepared initiator I is added after 2 minutes, the reaction is kept for 10 minutes, and after the complete reaction, the pre-emulsion and the initiator II are dropwise added at a constant speed for 3 hours.
And 5: after the reaction is finished, the temperature is reduced to below 50 ℃, the pH value is adjusted to 7, and after stirring for 10 minutes, sampling detection is carried out.
Example three: the styrene-acrylic emulsion coating comprises the following components in parts by weight:
a reaction kettle: 36 kg of deionized water
DES-20.9 kg
390K 0.1 kg
Initiating agent one: 1.7 kg of deionized water
Sodium persulfate 220 g
And (2) initiator II: 6 kg of deionized water
170 g of sodium persulfate.
A preparation method of a styrene-acrylic emulsion coating comprises the following steps:
step 1: adding 36 kg of deionized water into the reaction kettle, starting stirring, continuously adding 0.9 kg of DES-20 and 0.1 kg of 390K, and starting heating.
Step 2: and (3) starting to prepare pre-emulsion in the process of heating the reaction kettle, and adding 20 kg of ionized water, 0.8 kg of DES-20,1 kg of acrylamide, 21 kg of butyl acrylate, 38 kg of styrene, 1 kg of acrylic acid, 0.8 kg of silane coupling agent, 0.25 kg of AMPS and 2 kg of nano silicon dioxide into an emulsion cylinder.
And step 3: preparation of an initiator: the emulsion initiator is sodium persulfate, 220 g of sodium persulfate is dissolved by 1.7 kg of ionic water for the initiator, and 170 g of sodium persulfate is dissolved by 6 kg of deionized water for the initiator.
And 4, step 4: when the temperature of the reaction kettle reaches 83 ℃, 4.3 percent of the total amount of the prepared pre-emulsion is added into the reaction kettle, the prepared initiator I is added after 2 minutes, the reaction is kept for 10 minutes, and after the complete reaction, the pre-emulsion and the initiator II are dropwise added at a constant speed for 3 hours.
And 5: after the reaction is finished, the temperature is reduced to below 50 ℃, the pH value is adjusted to 7, and sampling detection is carried out after stirring for 10 minutes.
Performance test
1. Diameter of particle size
In this experiment, the styrene-acrylic emulsions prepared by the respective preparation methods of the styrene-acrylic emulsions of examples 1 to 3 were examined, and the particle diameter of the styrene-acrylic emulsion was measured by a nano-particle size analyzer, and the particle diameter of the styrene-acrylic emulsion was directly measured.
2. Degree of gloss
In the experiment, the styrene-acrylic emulsions prepared by the preparation methods of the styrene-acrylic emulsions in the embodiments 1 to 3 were detected, the prepared styrene-acrylic emulsions were uniformly coated on the surface of the same wood board, the coating amount was the same, and after the adhesive film was dried, the material was placed under the same light to compare the glossiness of the styrene-acrylic emulsions manually.
3. Hardness of
In the experiment, the styrene-acrylic emulsions prepared by the preparation methods of the styrene-acrylic emulsions in the embodiments 1 to 3 were detected, the prepared styrene-acrylic emulsions were uniformly coated on the surface of the same wood board, the coating amounts were the same, after the adhesive film was dried, a coin was used to apply a force of 10 newtons to slide on the surface of the adhesive film, and the trace left on the surface of the adhesive film was observed.
4. Water resistance
In the experiment, the styrene-acrylic emulsions prepared by the preparation methods of the styrene-acrylic emulsions in the embodiments 1 to 3 were detected, the prepared styrene-acrylic emulsions were uniformly coated on the surface of the same wood board, the coating amount was the same, the material was put into water after the adhesive film was dried, and after 2 hours, the wood board was taken out to observe the condition of the adhesive film.
5. Film forming property
In the experiment, the styrene-acrylic emulsions prepared by the preparation methods of the styrene-acrylic emulsions in the embodiments 1 to 3 were detected, the prepared styrene-acrylic emulsions were uniformly coated on the surface of the same wood board at the same time, the coating amounts were the same, and the time required for forming films of different adhesive films was observed.
TABLE 1 Performance test results
| Particle size | Degree of gloss | Depth of scratch | Degree of adhesion | Film formation time | |
| Example 1 | 90-95 nm | 4 splitting | Deep to | Partially fall off | 17 minutes |
| Example 2 | 98-103 nm | 6 splitting | Shallow | Slight detachment | 19 minutes |
| Example 3 | 95-100 nm | 8 splitting | No obvious scratch | No obvious shedding | 15 minutes |
According to the data in the table 1, compared with the traditional styrene-acrylic emulsion, the styrene-acrylic emulsion prepared in the embodiment 3 has better hardness and glossiness, better water resistance and film forming property and lower cost, and is suitable for the aspects of water-based industrial paint, surface treatment of artware and the like.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (6)
1. The styrene-acrylic emulsion coating is characterized in that: comprises the following components by weight: 55-65 parts of deionized water, 1.5-2.3 parts of emulsifier, 0.3-0.4 part of initiator, 19-24 parts of butyl acrylate, 35-40 parts of styrene, 0.9-1.2 parts of acrylamide, 0.9-1.2 parts of acrylic acid, 0.4-1 part of silane coupling agent and 1.8-2.2 parts of nano silicon dioxide.
2. The styrene-acrylic emulsion coating according to claim 1, wherein: the emulsifier comprises at least one of an anionic emulsifier, a nonionic emulsifier and a reactive emulsifier, wherein the anionic emulsifier is sulfosuccinic acid ethoxy ethanol monoester disodium salt (DES-20), the nonionic emulsifier is fatty alcohol polyoxyethylene ether (390K), and the reactive emulsifier is 2-acrylamide-2 methyl propane sulfonic acid sodium salt (AMPS).
3. The styrene-acrylic emulsion coating and the preparation method thereof as claimed in claim 1, wherein: the initiator comprises an initiator I and an initiator II, wherein the initiator I and the initiator II are sodium persulfate solutions with different concentrations.
4. A method for preparing a styrene-acrylic emulsion according to claim 1, comprising the steps of:
step 1: adding 35-40 parts of deionized water into the reaction kettle, starting stirring, continuously adding 0.7-1.1 parts of emulsifier, and starting heating;
step 2: in the process of heating the reaction kettle, adding 18-23 parts of deionized water, 0.8-1.1 part of emulsifier, 0.9-1.2 parts of acrylamide, 19-24 parts of butyl acrylate, 35-40 parts of styrene, 0.9-1.2 parts of acrylic acid, 0.4-1 part of silane coupling agent and 1.8-2.2 parts of nano silicon dioxide into an emulsifying cylinder, and stirring to form a pre-emulsion;
and step 3: preparation of an initiator: 1-2 parts of deionized water for dissolving 0.2-0.24 part of sodium persulfate for the first initiator, and 5-7 parts of deionized water for dissolving 0.1-0.2 part of sodium persulfate for the second initiator;
and 4, step 4: when the temperature of the reaction kettle reaches 83-86 ℃, adding 4.3% of the total amount of the prepared pre-emulsion into the reaction kettle, adding the prepared initiator I after 2 minutes, keeping the reaction time to be 10-15 minutes, dropwise adding the pre-emulsion and the initiator II at a constant speed after complete reaction, and dropwise adding for 3-3.5 hours;
and 5: after the reaction is finished, the temperature is reduced to below 50 ℃, the pH value is adjusted to 7-9, and sampling detection is carried out after stirring for 10-15 minutes.
5. The method for preparing the styrene-acrylic emulsion coating according to claim 4, wherein the method comprises the following steps: in the step 4, the temperature of the reaction kettle is raised to 83 ℃, the reaction time is kept for 10 minutes, and the dropping time is 3 hours.
6. The method for preparing the styrene-acrylic emulsion coating according to claim 4, wherein the method comprises the following steps: in step 5, the pH was adjusted to 7 and the stirring time was 10 minutes.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103059188A (en) * | 2012-12-18 | 2013-04-24 | 华中科技大学 | Preparing method of composite styrene-acrylic emulsion containing silicon dioxide |
| CN105273556A (en) * | 2015-11-30 | 2016-01-27 | 桂林市和鑫防水装饰材料有限公司 | Preparation method of polyacrylate/nano silicon dioxide composite emulsion coating material |
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2022
- 2022-08-22 CN CN202211004802.0A patent/CN115232519A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103059188A (en) * | 2012-12-18 | 2013-04-24 | 华中科技大学 | Preparing method of composite styrene-acrylic emulsion containing silicon dioxide |
| CN105273556A (en) * | 2015-11-30 | 2016-01-27 | 桂林市和鑫防水装饰材料有限公司 | Preparation method of polyacrylate/nano silicon dioxide composite emulsion coating material |
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| 王青尧: "种子乳液聚合法制备纳米SiO2/苯丙复合乳液", 《胶体与聚合物》 * |
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