CN112898494B - Acrylate emulsion and application thereof to aluminum powder paint - Google Patents
Acrylate emulsion and application thereof to aluminum powder paint Download PDFInfo
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- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F265/00—Macromolecular compounds obtained by polymerising monomers on to polymers of unsaturated monocarboxylic acids or derivatives thereof as defined in group C08F20/00
- C08F265/04—Macromolecular compounds obtained by polymerising monomers on to polymers of unsaturated monocarboxylic acids or derivatives thereof as defined in group C08F20/00 on to polymers of esters
- C08F265/06—Polymerisation of acrylate or methacrylate esters on to polymers thereof
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- 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
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- 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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- 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
- C09D5/10—Anti-corrosive paints containing metal dust
- C09D5/103—Anti-corrosive paints containing metal dust containing Al
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0812—Aluminium
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Abstract
The invention relates to an acrylate emulsion and application thereof in aluminum powder paint. The preparation method of the acrylate emulsion comprises the following steps: adding 20-40 parts of deionized water, 0.2-0.4 part of non-ionic emulsifier and 0.5-0.9 part of anionic emulsifier into a four-neck flask, and then adding two thirds of the core monomer mixed solution and the primary initiator aqueous solution; then, the remaining nuclear monomer mixed solution and the initiator aqueous solution are simultaneously dropped, and then N-N dimethylethanolamine is dropped until the pH =6; then adding the shell monomer mixed solution and the shell initiator aqueous solution; sequentially adding tert-butyl hydrogen peroxide aqueous solution and sodium sulfite aqueous solution, and finally adding 0.3-0.8 part of N-dimethylethanolamine to adjust the pH to be 7.5-8 to obtain the aqueous solution; the invention adopts phosphate resin to wrap the oily aluminum powder, has simple and convenient process, low cost, good wrapping property, good stability of the prepared coating, no or little hydrogen generation after long-term storage, no can expansion, excellent metal feeling after spraying and good corrosion resistance of the aluminum powder paint.
Description
Technical Field
The invention relates to an acrylate emulsion and application thereof in aluminum powder paint.
Background
The aluminum powder paint is widely applied to the fields of steel structures, rail transit, automobiles, electronic products and the like due to the properties of metallic texture, angle-dependent heterochromatic effect, corrosion resistance and the like; in recent years, with the enhancement of environmental protection, the development of the water-based aluminum powder paint is a hot spot, but the water-based aluminum powder paint has the following disadvantages: 1. the storage stability is poor, and the aluminum paste reacts with water to generate hydrogen gas, so that the can is expanded; 2. poor directional arrangement of the aqueous aluminum powder causes poor metal texture and effect of color along with the angle, and the surface of a coating film becomes dark, so that the expected effect cannot be achieved; 3. the cost of the waterborne aluminum paste is far higher than that of the oily aluminum paste, so that the waterborne aluminum paint is expensive; these disadvantages all affect the popularization and application of the water-based aluminum paint.
CN 108047834A discloses an easily-oriented high-performance fluorine-silicon composite water-based aluminum powder paint and a preparation method thereof, wherein the paint is prepared from silicone-acrylic emulsion, fluorocarbon emulsion, water-based aluminum paste and the like, and the easily-oriented high-performance fluorine-silicon composite water-based aluminum powder paint which is green, environment-friendly, good in stability, capable of reducing VOC (volatile organic compounds) emission and good in oriented arrangement of aluminum powder in the construction process is provided, but the price cost of the fluorine-silicon composite emulsion is far higher than that of the conventional emulsion, so that a user is prohibited; the patent: CN 105385271A discloses a single-component acrylic metal flashing paint and a preparation method thereof, wherein the single-component acrylic metal flashing paint has excellent decoration, good weather resistance and construction property, outstanding low-VOC environmental protection property, and is suitable for coating of automobiles and engineering machinery; the patent: CN 106565893A discloses a water-based styrene-acrylic emulsion for primer-topcoat metal paint and a preparation method thereof, wherein a phosphate functional monomer is grafted to acrylic latex ions by using a polymerization reaction, so that a prepared metal coating and the metal ions have good complexing effect, a coating film of the water-based styrene-acrylic emulsion has excellent water resistance, salt fog resistance and luster and hardness, and the water-based styrene-acrylic emulsion is a water-based styrene-acrylic emulsion for metal paint which meets the requirements of primer and topcoat performance at the same time.
The existing water-based aluminum powder paint can only meet part of performance requirements, and is difficult to achieve excellent comprehensive performance; the aqueous aluminum paste is adopted, the preparation process is complex, and the price is high;
disclosure of Invention
The acrylic ester emulsion provided by the invention is beneficial to stable dispersion of aluminum powder, enhances the adhesion of the aluminum powder, and has a great promotion effect on directional arrangement of the aluminum powder.
The invention is realized by the following technical scheme:
scheme one)
A preparation method of acrylate emulsion comprises the following steps:
at normal temperature, adding 20-40 parts of deionized water, 0.2-0.4 part of non-ionic emulsifier and 0.5-0.9 part of anionic emulsifier into a four-neck flask, stirring at the stirring speed of 200-300rpm for 5-10min, then heating to 80-90 ℃, then adding two thirds of the nuclear monomer mixed solution and the primary initiator aqueous solution, and then keeping the temperature at 80-90 ℃ for 0.5-2h;
then, simultaneously dripping the rest nuclear monomer mixed solution and the rest initiator aqueous solution for 2.5-3.5h, and then dripping N-dimethylethanolamine until the pH is =6;
then adding the shell monomer mixed solution and the shell initiator aqueous solution, continuously preserving the heat for 0.5-1h at the temperature of 80-90 ℃, and then cooling to 55-65 ℃;
sequentially adding tert-butyl hydrogen peroxide aqueous solution and sodium sulfite aqueous solution, preserving heat at 55-65 ℃ for 0.5-1.5h, cooling to normal temperature, and finally adding 0.3-0.8 part of N-dimethylethanolamine to adjust the pH to be 7.5-8 to obtain the product;
the nuclear monomer mixed solution consists of 1.5 to 6 parts of phosphate functional monomer, 4.5 to 9 parts of butyl acrylate, 15 to 30 parts of methyl methacrylate, 6 to 15 parts of styrene, 6 to 15 parts of isooctyl acrylate, 0.3 to 1.8 parts of acrylic acid and 6 to 24 parts of hydroxyethyl methacrylate;
the shell monomer mixed solution consists of 8-15 parts of styrene, 1-4 parts of butyl acrylate, 2-5 parts of isooctyl acrylate, 2-8 parts of methyl methacrylate and 1-5 parts of hydroxyethyl methacrylate.
Furthermore, the aqueous solution of the initial initiator is prepared by mixing 0.03-0.1 part of ammonium persulfate and 1-2 parts of deionized water.
Furthermore, the drop initiator aqueous solution is formed by mixing 0.07-0.15 part of ammonium persulfate and 5-10 parts of deionized water.
Furthermore, the shell initiator aqueous solution is formed by mixing 0.05-0.2 part of tert-butyl hydroperoxide or 0.05-0.2 part of sodium sulfite and 1-4 parts of deionized water.
Furthermore, the tert-butyl hydroperoxide aqueous solution is formed by mixing 0.02-0.1 part of tert-butyl hydroperoxide and 0.1-0.5 part of deionized water.
Furthermore, the sodium sulfite aqueous solution is formed by mixing 0.01 to 0.1 portion of sodium sulfite and 0.5 to 4 portions of deionized water.
A preparation method of aluminum paint comprises the following steps:
step one, adding 1-10 parts of propylene glycol butyl ether, 1-10 parts of isopropanol and 5-8 parts of oily aluminum paste in sequence under low-speed stirring, stirring for 3-10min, then adding 1-5 parts of phosphate ester resin, continuing stirring for 30-60min, adding 0.3-0.9 part of dispersant, stirring for 3-5min, adding 0.1-0.3 part of N-N dimethylethanolamine, stirring for 3min,
step two, adding 20-50 parts of acrylate emulsion and 0.5-1.5 parts of pH regulator according to any one of claims 1-6 at a stirring speed of 150-250rpm, adjusting the pH value to 7.5-8.5, then adding 0.25-1 part of leveling agent, 0.2-1 part of antifoaming agent, 1-10 parts of ethylene glycol butyl ether, 1-10 parts of dipropylene glycol methyl ether, 5-15 parts of wax emulsion, 1-3 parts of pH regulator and 25-45 parts of water, and then stirring for 30min;
and step three, adjusting the stirring speed of the material in the step one to be 150-250rpm, then adding the material obtained in the step two, stirring for 10-30min, and stopping discharging.
The pH regulator is 10% DMEA aqueous solution;
the leveling agent is BYK-346;
the defoaming agent is Surfynol 440;
the wax emulsion is DISPERBYK-8421.
When in use, the coating prepared in the third step is mixed with a curing agent according to the mass ratio of 20.
Compared with the prior art, the invention has the following beneficial effects:
the acrylate emulsion contains phosphate groups, so that when the acrylate emulsion is applied to aluminum paste, the complexing effect on the aluminum paste can be provided, the adsorption on the surface of aluminum powder is enhanced, the dispersion stability of the aluminum paste is improved, and the directional arrangement of the aluminum paste is facilitated; and provides excellent comprehensive properties such as water resistance, salt spray resistance, weather resistance, hardness, adhesiveness and the like of the aluminum powder paint;
the invention adopts the phosphate resin to wrap the oily aluminum powder, has simple and convenient process, low cost, good wrapping property, good stability of the prepared coating, no or little hydrogen generation after long-term storage, no can expansion, excellent metal feeling after spraying and good corrosion resistance of the aluminum powder paint.
Detailed description of the preferred embodiments
The invention will be further illustrated with reference to specific examples.
Example 1
Base liquid beating: 20 parts of deionized water, 0.2 part of nonionic emulsifier and 0.5 part of anionic emulsifier; stirring and dissolving;
nuclear monomer mixed solution: 0.5 part of phosphate functional monomer, 1.5 parts of butyl acrylate, 5 parts of methyl methacrylate, 2 parts of styrene, 2 parts of isooctyl acrylate, 0.2 part of acrylic acid and 2 parts of hydroxyethyl methacrylate;
initial initiator aqueous solution: 1 part of deionized water and 0.03 part of APS (ammonium sulfate);
dropping an aqueous initiator solution: 5 parts of deionized water and 0.07 part of APS (ammonium sulfate);
shell monomer mixed solution: 8 parts of styrene, 1 part of butyl acrylate, 1 part of isooctyl acrylate, 2 parts of methyl methacrylate and 1 part of hydroxyethyl methacrylate;
aqueous shell initiator solution: 1 part of deionized water and 0.05 part of tert-butyl hydroperoxide; 1 part of deionized water and 0.05 part of sodium sulfite are dissolved;
t-butyl hydroperoxide solution: 0.1 part of deionized water and 0.02 part of tert-butyl hydroperoxide;
sodium sulfite solution: 0.5 part of deionized water and 0.01 part of sodium sulfite are dissolved;
the preparation method of the acrylate emulsion comprises the following steps: adding the primer into a four-neck flask, stirring by using an electric stirrer at the stirring speed of 200rpm, heating in a water bath to 80 ℃ for keeping, adding 2 parts of nuclear monomer mixed solution and a primary initiator, and keeping the temperature for 0.5h;
simultaneously dripping the nuclear monomer mixed solution and the initiator aqueous solution for 2.5h; adjusting pH =6 using N-N Dimethylethanolamine (DMEA);
simultaneously, shell monomer mixed solution and shell initiator aqueous solution are added at one time, heat preservation is continuously carried out for 0.5h at 80 ℃, and then the temperature is reduced to 55 ℃;
removing residual monomers: sequentially adding tert-butyl hydroperoxide solution and sodium sulfite solution, keeping the temperature at 55 ℃ for 0.5h, cooling to normal temperature, and adjusting the pH to be =7.5-8 by using 0.3 part of N-dimethylethanolamine;
preparing aluminum powder paint:
step one, preparing aluminum paste, namely sequentially adding 1 part of propylene glycol butyl ether, 1 part of isopropanol and 5 parts of oily aluminum paste under low-speed stirring, stirring for 3min, adding 1 part of phosphate resin, stirring for 30min, adding 0.1 part of dispersant DISPERBYK-182 and 0.2 part of dispersant DISPERBYK-192, stirring for 3min, adding 0.1 part of DMEA, adjusting the pH to be 7.5-8.5, stirring for 3min, and stopping standby application;
step two, sequentially adding 20 parts of the acrylic ester emulsion, 0.5 part of 10-percent DMEA aqueous solution, adjusting the pH of the emulsion to be 7.5-8.5, 0.25 part of BYK-346, 440.2 parts of Surfynol, 1 part of ethylene glycol butyl ether (BCS), 1 part of dipropylene glycol methyl ether (DPM), 1 part of DISPERBYK-8421, 1 part of 10-percent DMEA and 25 parts of water at the stirring speed of 150rpm, and stirring for 30min;
step three, adjusting the stirring speed of the material in the step one to be 150rpm, then adding the material obtained in the step two,
and step four, mixing a certain amount of the coating prepared in the step three with a curing agent according to the mass ratio of 20.
Example 2
Base liquid beating: 40 parts of deionized water, 0.4 part of nonionic emulsifier and 0.9 part of anionic emulsifier; stirring and dissolving;
nuclear monomer mixed solution: 2 parts of phosphate functional monomer, 3 parts of butyl acrylate, 10 parts of methyl methacrylate, 5 parts of styrene, 5 parts of isooctyl acrylate, 0.6 part of acrylic acid and 8 parts of hydroxyethyl methacrylate;
initial initiator aqueous solution: 2 parts of deionized water and 0.1 part of APS (ammonium sulfate);
dropping an aqueous initiator solution: 10 parts of deionized water and 0.15 part of APS (ammonium sulfate);
shell monomer mixed solution: 15 parts of styrene, 4 parts of butyl acrylate, 4 parts of isooctyl acrylate, 8 parts of methyl methacrylate and 4 parts of hydroxyethyl methacrylate;
aqueous shell initiator solution: 2 parts of deionized water and 0.2 part of tert-butyl hydroperoxide; 2 parts of deionized water and 0.2 part of sodium sulfite are dissolved;
t-butyl hydroperoxide solution: 2 parts of deionized water and 0.2 part of tert-butyl hydroperoxide;
sodium sulfite solution: 2 parts of deionized water and 0.2 part of sodium sulfite are dissolved;
the preparation method of the acrylate emulsion comprises the following steps: adding the primer solution into a four-neck flask, stirring by using an electric stirrer at the stirring speed of 300rpm, heating in a water bath to 90 ℃ for keeping, adding 2 parts of nuclear monomer mixed solution and an initial initiator aqueous solution, and then keeping the temperature at 90 ℃ for 2 hours;
simultaneously dripping the nuclear monomer mixed solution and the initiator aqueous solution for 3.5 hours; adjusting pH =6 using N-N Dimethylethanolamine (DMEA);
simultaneously, adding the shell monomer mixed solution and the shell initiator aqueous solution at one time, continuously preserving the heat for 1h at 90 ℃, and cooling to 65 ℃;
removing residual monomers: sequentially adding tert-butyl hydroperoxide solution and sodium sulfite solution, keeping the temperature at 65 ℃ for 1.5h, cooling to normal temperature, and adjusting the pH to be =7.5-8 by using 0.8 part of N-dimethylethanolamine;
2. preparing aluminum powder paint:
step one, preparing aluminum paste, namely sequentially adding 10 parts of propylene glycol butyl ether, 10 parts of isopropanol and 8 parts of oily aluminum paste under low-speed stirring, stirring for 10min, adding 5 parts of phosphate resin, stirring for 60min, adding 0.4 part of dispersant DISPERBYK-182 and 0.5 part of dispersant DISPERBYK-192, stirring for 3min, adding 0.3 part of DMEA, adjusting the pH to be 7.5-8.5, stirring for 3min, and stopping standby application;
step two, adding 50 parts of the acrylic ester emulsion, 1.5 parts of 10-percent DMEA aqueous solution, adjusting the pH of the emulsion to be 7.5-8.5, BYK-3461 parts, surfynol 440 parts, 10 parts of ethylene glycol butyl ether (BCS), 10 parts of dipropylene glycol methyl ether (DPM), 15 parts of DISPERBYK-8421 parts, 3 parts of 10-percent DMEA and 45 parts of water in sequence at the stirring speed of 250rpm, and stirring for 30min;
and step three, adjusting the stirring speed of the material in the step one to be 250rpm, then adding the material obtained in the step two, stirring for 30min, and stopping discharging.
And step four, mixing a certain amount of the coating prepared in the step three with a curing agent according to the mass ratio of 20.
Example 3
Base liquid beating: 39 parts of deionized water, 0.28 part of non-ionic emulsifier and 0.75 part of anionic emulsifier; stirring and dissolving;
nuclear monomer mixed solution: 0.93 part of phosphate functional monomer, 2.3 parts of butyl acrylate, 7.5 parts of methyl methacrylate, 3.5 parts of styrene, 3.5 parts of isooctyl acrylate, 0.41 part of acrylic acid and 4.66 parts of hydroxyethyl methacrylate;
initial initiator aqueous solution: 1.12 parts of deionized water and 0.07 part of APS;
dropping an aqueous initiator solution: 7.8 parts of deionized water and 0.12 part of APS (ammonium sulfate);
shell monomer mixed solution: 9.8 parts of styrene, 1.4 parts of butyl acrylate, 2 parts of isooctyl acrylate, 4.31 parts of methyl methacrylate and 1.86 parts of hydroxyethyl methacrylate;
aqueous shell initiator solution: 2.8 parts of deionized water and 0.12 part of tert-butyl hydroperoxide; 2.8 parts of deionized water and 0.09 part of sodium sulfite are dissolved;
t-butyl hydroperoxide solution: 0.12 part of deionized water and 0.04 part of tert-butyl hydroperoxide;
sodium sulfite solution: 1.14 parts of deionized water and 0.03 part of sodium sulfite are dissolved;
the preparation method of the acrylate emulsion comprises the following steps: adding the primer solution into a four-neck flask, stirring by using an electric stirrer at the stirring speed of 250rpm, heating in a water bath to 83 ℃ for keeping, adding 2 parts of nuclear monomer mixed solution and a primary initiator, and keeping the temperature for 1h;
simultaneously dropwise adding the nuclear monomer mixed solution and the initiator aqueous solution for 3h; adjusting pH =6 using N-N Dimethylethanolamine (DMEA);
simultaneously, shell monomer mixed solution and shell initiator aqueous solution are added at one time, the temperature is kept for 0.5h, and the temperature is reduced to 60 ℃;
removing residual monomers: sequentially adding tert-butyl hydroperoxide solution and sodium sulfite solution, keeping the temperature for 0.5h, cooling to normal temperature, and adjusting the pH to be 7.5-8 by using 0.56 part of N-dimethylethanolamine;
2. preparing aluminum powder paint:
step one, preparing aluminum paste, namely sequentially adding 1-10 parts of propylene glycol butyl ether, 1-10 parts of isopropanol and 5-8 parts of oily aluminum paste under low-speed stirring, stirring for 3min, adding 1-5 parts of phosphate resin, stirring for 30min, adding 0.2 part of dispersant DISPERBYK-182 and 0.3 part of dispersant DISPERBYK-192, stirring for 3min, adding 0.2 part of DMEA, adjusting the pH to be 7.5-8.5, stirring for 3min, and stopping standby application;
step two, adding 40 parts of the acrylic ester emulsion, 1.1 parts of 10 percent DMEA aqueous solution, adjusting the pH of the emulsion to be 7.5-8.5, 0.75 part of BYK-346, 0.7 part of Surfynol 440, 1-10 parts of ethylene glycol butyl ether (BCS), 15 parts of water, 1-10 parts of dipropylene glycol methyl ether (DPM), 10 parts of DISPERBYK-8421, 2 parts of 10 percent DMEA and 10-30 parts of water in sequence under low-speed stirring, and stirring for 30min;
and step three, adding the step two into the step one under low-speed stirring, stirring for 20min, and stopping discharging.
And step four, mixing a certain amount of the coating prepared in the step three with a curing agent according to the mass ratio of 20.
The implementation effect is as follows:
Claims (6)
1. a preparation method of aluminum paint is characterized by comprising the following steps: the method comprises the following steps:
step one, adding 1-10 parts of propylene glycol butyl ether, 1-10 parts of isopropanol and 5-8 parts of oily aluminum paste in sequence under low-speed stirring, stirring for 3-10min, then adding 1-5 parts of phosphate resin, continuing stirring for 30-60min, then adding 0.3-0.9 part of dispersant, stirring for 3-5min, then adding 0.1-0.3 part of N-N dimethylethanolamine, stirring for 3min,
step two, adding 20-50 parts of acrylate emulsion and 0.5-1.5 parts of pH regulator at the stirring speed of 150-250rpm, regulating the pH to 7.5-8.5, then adding 0.25-1 part of flatting agent, 0.2-1 part of defoaming agent, 1-10 parts of ethylene glycol butyl ether, 1-10 parts of dipropylene glycol methyl ether, 5-15 parts of wax emulsion, 1-3 parts of pH regulator and 25-45 parts of water, and then stirring for 30min;
step three, adjusting the stirring speed of the material in the step one to be 150-250rpm, then adding the material obtained in the step two, stirring for 10-30min, and stopping discharging;
the acrylate emulsion is prepared by the following method:
at normal temperature, adding 20-40 parts of deionized water, 0.2-0.4 part of non-ionic emulsifier and 0.5-0.9 part of anionic emulsifier into a four-neck flask, stirring at the stirring speed of 200-300rpm for 5-10min, then heating to 80-90 ℃, then adding two thirds of nuclear monomer mixed liquor and primary initiator aqueous solution, and then keeping the temperature at 80-90 ℃ for 0.5-2h;
then, simultaneously dripping the remaining nuclear monomer mixed solution and the initiator aqueous solution for 2.5-3.5h, and then dripping N-dimethylethanolamine until the pH is =6;
then adding the shell monomer mixed solution and the shell initiator aqueous solution, continuously preserving the heat for 0.5-1h at the temperature of 80-90 ℃, and then cooling to 55-65 ℃;
sequentially adding tert-butyl hydrogen peroxide aqueous solution and sodium sulfite aqueous solution, preserving heat at 55-65 ℃ for 0.5-1.5h, cooling to normal temperature, and finally adding 0.3-0.8 part of N-dimethylethanolamine to adjust the pH to be 7.5-8 to obtain the product;
the nuclear monomer mixed solution consists of 1.5 to 6 parts of phosphate functional monomer, 4.5 to 9 parts of butyl acrylate, 15 to 30 parts of methyl methacrylate, 6 to 15 parts of styrene, 6 to 15 parts of isooctyl acrylate, 0.3 to 1.8 parts of acrylic acid and 6 to 24 parts of hydroxyethyl methacrylate;
the shell monomer mixed solution consists of 8-15 parts of styrene, 1-4 parts of butyl acrylate, 2-5 parts of isooctyl acrylate, 2-8 parts of methyl methacrylate and 1-5 parts of hydroxyethyl methacrylate.
2. The method for preparing aluminum paint according to claim 1, wherein: the aqueous solution of the initial initiator is prepared by mixing 0.03-0.1 part of ammonium persulfate and 1-2 parts of deionized water.
3. The method for preparing aluminum paint according to claim 1, wherein: the drop initiator aqueous solution is formed by mixing 0.07-0.15 part of ammonium persulfate and 5-10 parts of deionized water.
4. The method for preparing aluminum paint according to claim 1, wherein: the shell initiator aqueous solution is prepared by mixing 0.05-0.2 part of tert-butyl hydroperoxide, 0.05-0.2 part of sodium sulfite and 1-4 parts of deionized water.
5. The method for preparing aluminum paint according to claim 1, wherein: the tert-butyl hydroperoxide aqueous solution is formed by mixing 0.02-0.1 part of tert-butyl hydroperoxide and 0.1-0.5 part of deionized water.
6. The method for preparing aluminum paint according to claim 1, wherein the method comprises the following steps: the sodium sulfite aqueous solution is formed by mixing 0.01 to 0.1 portion of sodium sulfite and 0.5 to 4 portions of deionized water.
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| CN114292556A (en) * | 2021-12-03 | 2022-04-08 | 上海三棵树防水技术有限公司 | Organic-inorganic composite resin and preparation method of waterproof and decorative integrated coating thereof |
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