WO2021057126A1 - High flash point alkyd resin protective coating and preparatin method thereof - Google Patents

High flash point alkyd resin protective coating and preparatin method thereof Download PDF

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Publication number
WO2021057126A1
WO2021057126A1 PCT/CN2020/097470 CN2020097470W WO2021057126A1 WO 2021057126 A1 WO2021057126 A1 WO 2021057126A1 CN 2020097470 W CN2020097470 W CN 2020097470W WO 2021057126 A1 WO2021057126 A1 WO 2021057126A1
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Prior art keywords
alkyd resin
protective coating
parts
flash point
resin protective
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PCT/CN2020/097470
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French (fr)
Chinese (zh)
Inventor
谢海
胡明
钱金均
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江苏冠军科技集团股份有限公司
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Publication of WO2021057126A1 publication Critical patent/WO2021057126A1/en

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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
    • C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
    • C09D167/08—Polyesters modified with higher fatty oils or their acids, or with natural resins or resin acids
    • 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
    • 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
    • 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
    • C09D7/20—Diluents or solvents
    • 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
    • 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
    • C08K2003/2206—Oxides; Hydroxides of metals of calcium, strontium or barium
    • 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
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2237—Oxides; Hydroxides of metals of titanium
    • C08K2003/2241—Titanium dioxide
    • 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
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2262—Oxides; Hydroxides of metals of manganese
    • 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
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2265—Oxides; Hydroxides of metals of iron
    • 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
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2289—Oxides; Hydroxides of metals of cobalt
    • 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
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2296—Oxides; Hydroxides of metals of zinc
    • 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
    • C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
    • C08K2003/3045—Sulfates

Definitions

  • the invention relates to the technical field of coatings, in particular to a high flash point alkyd resin protective coating and a preparation method thereof.
  • Solvent-based coatings are highly decorative, durable, protective, and multifunctional. They are widely used in modern industry, national defense, information, biochemistry, new materials, aerospace, marine development, renewable energy development, and environmental protection. Organic solvents in solvent-based coatings play a key role. For example, organic solvents can reduce the surface tension of the coating, improve the wetting and dispersion properties of the pigment, adjust the viscosity of the film-forming resin and coating, and improve the fluidity of the coating. Coating products meet different paint requirements and construction requirements.
  • the purpose of the present invention is to provide a high flash point alkyd resin protective coating and its preparation method and application.
  • the high flash point alkyd resin protective coating provided by the present invention has good heat resistance effect, convenient construction and has the effect of beautifying the environment.
  • the present invention provides a high flash point alkyd resin protective coating, which comprises the following components in parts by weight:
  • Anti-skinning agent 0.2 ⁇ 0.3 parts.
  • the alkyd resin is prepared from natural vegetable oil through a high-temperature reaction; the temperature of the high-temperature reaction is 180-200°C, and the time is 14-15h.
  • the viscosity of the alkyd resin at 25°C is 250-350s.
  • the viscosity of the high flash point alkyd resin protective coating at 25°C is 190-210s.
  • the titanium dioxide is rutile titanium dioxide.
  • the particle size of the barium sulfate is 1100-1300 mesh.
  • the alcohol ether solvent includes diethylene glycol methyl ether, diethylene glycol ethyl ether, diethylene glycol butyl ether, dipropylene glycol methyl ether, dipropylene glycol butyl ether, diethylene glycol ethyl ether and tripropylene glycol methyl ether. One or more of them.
  • the drier includes one or more of metal oxides, metal salts and rare earth driers.
  • the metal in the metal oxide and metal salt independently includes cobalt, manganese, iron, zinc or calcium.
  • the present invention provides a preparation method of the high flash point alkyd resin protective coating described in the above technical scheme, which includes the following steps:
  • Part of the alcohol ether solvent, part of the alkyd resin, wetting agent, dispersant, fumed silica, titanium dioxide and barium sulfate are mixed and then ground to obtain a slurry;
  • the slurry, the remaining alkyd resin, the drier, the remaining alcohol ether solvent and the anti-skinning agent are mixed to obtain the alkyd resin protective coating.
  • the partial alcohol ether solvent accounts for 75-85% of the total mass of the alcohol ether solvent
  • the part of the alkyd resin accounts for 65-75% of the total mass of the alkyd resin
  • the fineness of the solid particles in the slurry is less than or equal to 30 ⁇ m.
  • the present invention also provides the application of the high flash point alkyd resin protective coating or the alkyd resin protective coating prepared by the preparation method in industrial anticorrosion.
  • the application is an application in the protection of steel structures.
  • the present invention provides a high flash point alkyd resin protective coating, which comprises the following components in parts by weight: 60 to 65 parts of alkyd resin; 15 to 20 parts of titanium dioxide; 5 to 15 parts of barium sulfate; alcohol ether solvents 5-10 parts; 0.3-0.4 parts of fumed silica; 0.2-0.4 parts of wetting agent; 0.3-0.5 parts of dispersing agent; 0.7-1 parts of drier; 0.2-0.3 parts of anti-skinning agent.
  • the present invention takes alkyd resin as the main body, and adds alcohol ether solvents, titanium dioxide, barium sulfate, fumed silica, and under the action of wetting agent, dispersant, drier and anti-skinning agent, the alcohol obtained
  • the acid resin protective coating has a high flash point and is safer during production, transportation and use. It is a safe protective coating; it has excellent properties such as acid resistance, alkali resistance, and weather resistance; it has low toxicity and is environmentally friendly.
  • the invention provides a preparation method of the high flash point alkyd resin protective coating, which has simple operation and is suitable for large-scale production.
  • the present invention provides a high flash point alkyd resin protective coating, which comprises the following components in parts by weight:
  • Anti-skinning agent 0.2 ⁇ 0.3 parts.
  • the raw materials for preparing the high flash point alkyd resin protective coating include 60 to 65 parts of alkyd resin, preferably 61 to 65 parts, more preferably 61 parts, 62 parts, and 63 parts. Servings, 64 servings, or 65 servings.
  • the alkyd resin is preferably prepared from natural vegetable oil through high-temperature reaction.
  • the natural vegetable oil first undergoes alcoholysis and then undergoes polymerization.
  • the natural vegetable oil preferably includes one or more of soybean oil, linseed oil and cottonseed oil, more preferably soybean oil, linseed oil or cottonseed oil.
  • the temperature of the high-temperature reaction is preferably 180-200°C, more preferably 185-195°C; the time of the high-temperature reaction is preferably 14-15h, more preferably 15h.
  • the present invention preferably further includes adding diethylene glycol butyl ether and/or diethylene glycol methyl ether solvent to adjust the viscosity of the obtained resin.
  • the viscosity of the alkyd resin is preferably 250-350s (measured with a Tu-4 viscometer, and the test temperature is 25°C).
  • the coating made of alkyd resin as the film-forming substance of the present invention has a higher flash point than the coating prepared directly from natural vegetable oil, and the adhesion, flexibility and alkali resistance of the alkyd resin protective coating provided by the present invention , Acid resistance, abrasion resistance and weather resistance are good, at the same time its hardness is high, the paint film is smooth and fine, non-toxic, non-polluting, and can effectively extend the life of the alkyd resin protective coating.
  • the raw materials for preparing the high flash point alkyd resin protective coating include 15-20 parts of titanium dioxide, preferably 16-20 parts, and more preferably 16 parts. Servings, 17 servings, 18 servings, 19 servings, or 20 servings. In the present invention, too much amount of the titanium dioxide will affect the film-forming effect of the alkyd resin protective coating, and too little amount will affect the color of the alkyd resin protective coating.
  • the titanium dioxide is preferably rutile-type titanium dioxide, more preferably chlorinated rutile-type titanium dioxide. The invention uses titanium dioxide in combination with other raw materials to improve the performance of the alkyd resin protective coating.
  • the raw material for preparing the high flash point alkyd resin protective coating includes 5-15 parts of barium sulfate, preferably 6-15 parts, more preferably 7 Servings, 8, 9, 10, 11, 12, 13, 14, or 15.
  • the particle size of the barium sulfate is preferably 1100 to 1300 mesh, more preferably 1150 to 1250 mesh, and most preferably 1200 mesh.
  • the function of the barium sulfate is a filler; too much amount of the barium sulfate will affect the film-forming effect of the alkyd resin protective coating, and too little amount will affect the mechanical properties of the alkyd resin protective coating film.
  • the invention uses barium sulfate in combination with other raw materials to improve the performance of the alkyd resin protective coating.
  • the raw materials for preparing the high flash point alkyd resin protective coating include 5-10 parts of alcohol ether solvents, preferably 6-10 parts, more preferably It is 6, 7, 8, 9 or 10 servings.
  • the alcohol ether solvent preferably includes diethylene glycol methyl ether, diethylene glycol ethyl ether, diethylene glycol butyl ether, dipropylene glycol methyl ether, dipropylene glycol butyl ether, diethylene glycol ethyl ether and tripropylene glycol One or more of methyl ether.
  • the present invention when the alcohol ether solvents are two or more kinds of alcohol ether solvents, the present invention does not specifically limit the mass ratio of the different types of alcohol ether solvents, and any ratio is acceptable. In the present invention, too much or too little amount of the alcohol ether solvent will affect the viscosity of the alkyd resin protective coating, thereby affecting its film-forming effect and performance. In the invention, the alcohol ether solvent is used in combination with other raw materials to improve the performance of the alkyd resin protective coating.
  • the raw materials for preparing the high flash point alkyd resin protective coating include 0.3 to 0.4 parts of fumed silica, preferably 0.32 to 0.4 parts, more preferably It is 0.32 part, 0.34 part, 0.36 part, 0.38 part or 0.40 part.
  • the function of the fumed silica is to prevent the precipitation of other raw materials; too much of the fumed silica will cause the viscosity of the alkyd resin protective coating to be too high, and the amount of too little will not have the anti-settling effect.
  • the invention uses fumed silica in combination with other raw materials to improve the performance of the alkyd resin protective coating.
  • the raw materials for preparing the high flash point alkyd resin protective coating include 0.2 to 0.4 parts of a wetting agent, preferably 0.22 to 0.4 parts, more preferably 0.25 parts, 0.3 parts, 0.35 parts or 0.40 parts.
  • the specific type of the wetting agent is not particularly limited, as long as the wetting agent is well known in the art, such as silicone oil.
  • the function of the wetting agent is to wet the pigments and fillers, thereby helping to improve the grinding efficiency of titanium dioxide and barium sulfate and the coating of other raw materials by alkyd resin, and prevent the floating of raw materials such as titanium dioxide and barium sulfate. color.
  • the wetting agent In the present invention, too much amount of the wetting agent will cause shrinkage of the alkyd resin protective coating film, and too little amount will cause the alkyd resin protective coating film to bloom.
  • the invention uses the wetting agent in combination with other raw materials to improve the performance of the alkyd resin protective coating.
  • the raw materials for preparing the high flash point alkyd resin protective coating include 0.3 to 0.5 parts of dispersant, preferably 0.35 to 0.5 parts, more preferably 0.35 Parts, 0.4 parts, 0.45 parts or 0.5 parts.
  • the dispersant preferably includes a phosphate ester-based dispersant.
  • the function of the dispersant is to disperse pigments and fillers; too much of the dispersant will result in slower drying of the alkyd resin protective coating film, and too little will cause the alkyd resin protective coating film to dry Floating color, paint precipitation.
  • the invention uses the dispersant in combination with other raw materials to improve the performance of the alkyd resin protective coating.
  • the raw materials for preparing the high flash point alkyd resin protective coating include 0.7 to 1 part of drier, preferably 0.75 to 1 part, more preferably 0.75 part, 0.8 part, 0.85 part, 0.9 part, 0.95 part or 1 part.
  • the drier preferably includes one or more of metal oxides, metal salts and rare earth driers, and more preferably includes metal oxides, metal salts or rare earth driers; the metal oxide
  • the metal in the substance and the metal salt independently includes cobalt, manganese, iron, zinc, or calcium.
  • the present invention when two or more kinds of driers are used, the present invention has no special limitation on the mass ratio of the different types of driers, and any ratio can be used.
  • the function of the drier is to accelerate the drying of the paint film of the alkyd resin protective coating; too much amount of the drier will cause the alkyd resin protective coating to be easily skinned, and too little amount will cause the alkyd resin
  • the paint film of the resin protective coating is not easy to dry.
  • the invention uses the drier in combination with other raw materials to improve the performance of the alkyd resin protective coating.
  • the raw materials for preparing the high flash point alkyd resin protective coating include 0.2-0.3 parts of anti-skinning agent, preferably 0.22-0.3 parts, more preferably It is 0.22 part, 0.24 part, 0.26 part, 0.28 part or 0.3 part.
  • the type of the anti-skinning agent is not particularly limited, as long as the anti-skinning agent is well-known in the art, such as methyl ethyl ketoxime.
  • the function of the anti-skinning agent is to prevent the alkyd resin protective coating from skinning during storage; the excessive amount of the anti-skinning agent will cause the alkyd resin protective coating film to not dry. Too little can not achieve the effect of anti-skinning.
  • the invention uses the anti-skinning agent in combination with other raw materials to improve the performance of the alkyd resin protective coating.
  • the present invention takes alkyd resin as the main body, and adds alcohol ether solvents, titanium dioxide, barium sulfate, fumed silica, and under the action of wetting agent, dispersant, drier and anti-skinning agent, the alcohol obtained
  • the acid resin protective coating has a high flash point and is safer during production, transportation and use; it has excellent acid resistance, alkali resistance, and weather resistance; it has low toxicity and is environmentally friendly.
  • the present invention also provides a preparation method of the high flash point alkyd resin protective coating described in the above technical scheme, which includes the following steps:
  • Part of the alcohol ether solvent, part of the alkyd resin, wetting agent, dispersant, fumed silica, titanium dioxide and barium sulfate are mixed and then ground to obtain a slurry;
  • the slurry, the remaining alkyd resin, the drier, the remaining alcohol ether solvent and the anti-skinning agent are mixed to obtain the alkyd resin protective coating.
  • part of alcohol ether solvent, part of alkyd resin, wetting agent, dispersant, fumed silica, titanium dioxide and barium sulfate are mixed and then ground to obtain slurry.
  • the partial alkyd resin preferably accounts for 65 to 75% of the total mass of the alkyd resin, more preferably 68 to 72%, and most preferably 70%.
  • the partial alcohol ether solvent preferably accounts for 75 to 85% of the total mass of the alcohol ether solvent, more preferably 78 to 82%, and most preferably 80%.
  • the mixing is preferably stirring and mixing, and the speed of the stirring and mixing is preferably 800-1000 rpm, more preferably 850-1000 rpm, most preferably 900-1000 rpm; the present invention adopts a high stirring speed, which can increase the raw material The uniformity of dispersion.
  • the order of the mixing is preferably to perform the first stirring and mixing of part of the alkyd resin and part of the alcohol ether solvent, sequentially adding the wetting agent, dispersant, and fumed silica for the second stirring and mixing, and then Add titanium dioxide and barium sulfate to perform the third stirring and mixing.
  • the time for the first stirring and mixing, the second stirring and mixing and the third stirring and mixing is not particularly limited, as long as the raw materials can be uniformly mixed.
  • the present invention adopts the above-mentioned mixing sequence, which can improve the dispersion uniformity of each raw material.
  • the fineness of the solid particles in the slurry is preferably ⁇ 30 ⁇ m.
  • the grinding is preferably carried out in a sand mill, and the rotation speed of the grinder is preferably 500 to 600 rpm.
  • the present invention has no special limitation on the grinding time, which can ensure the solid particles in the slurry. The fineness can meet the requirements.
  • the present invention mixes the slurry, the remaining alkyd resin, the drier, the remaining alcohol ether solvent and the anti-skinning agent to obtain the alkyd resin protective coating.
  • the remaining alkyd resin preferably accounts for 25 to 35% of the total mass of the alkyd resin, more preferably 28 to 32%, most preferably 30%; the partial alkyd resin and the remaining alkyd resin The total mass is calculated as 100%.
  • the partial alcohol ether solvent preferably accounts for 15-25% of the total mass of the alcohol ether solvent, more preferably 18-22%, most preferably 20%; the partial alcohol ether solvent and the alcohol ether The total mass of similar solvents is calculated as 100%.
  • the mixing is preferably stirring and mixing.
  • stirring and mixing speed there is no special limitation on the stirring and mixing speed, as long as the stirring speed is well known in the art.
  • the mixing sequence is preferably to stir and mix the slurry, the remaining alkyd resin and the drier, add the remaining alcohol ether solvent to adjust the viscosity, and then add the anti-skinning agent and stir and mix for 15 minutes.
  • the viscosity of the alkyd resin protective coating at 25°C is preferably 190-210s.
  • the present invention preferably further includes packaging the obtained alkyd resin protective coating.
  • packaging method there is no special limitation on the packaging method, as long as the packaging method well known in the art is adopted.
  • the alkyd resin is added in two times.
  • the first time the alkyd resin is added is to uniformly disperse with the wetting agent, dispersant, fumed silica, titanium dioxide and barium sulfate, and the second time the alcohol is added.
  • Acid resin is to increase the gloss, hardness, weather resistance and other properties of the coating; if added at one time, one is to increase the dispersion time and make the dispersion uneven, affecting the dispersion efficiency of the raw materials in the coating, and will cause electricity, cooling water and The loss of equipment greatly increases the production cost; second, it will cause the coating performance to fail to meet the standard.
  • the preparation method provided by the invention has a simple process, the prepared alkyd resin protective coating is harmless to the environment and the human body, and is green, safe and environmentally friendly.
  • the present invention also provides the application of the high flash point alkyd resin protective coating of the above technical solution or the high flash point alkyd resin protective coating prepared by the preparation method of the above technical solution in industrial anticorrosion, preferably in the protection of steel structures Applications.
  • Pre-dispersion In parts by weight, add 6.3 parts of mixed alcohol ether solvent and 45.5 parts of alkyd resin to the feeding dispersion tank and stir evenly; add 0.25 part of wetting agent, 0.5 part of dispersant, and 0.3 part of gas phase in sequence Silica, disperse at a high speed for 15 minutes at 1000 rpm; then add 15 parts of titanium dioxide and 10 parts of barium sulfate in sequence, and stir at a high speed at 1000 rpm to make it uniform; among them, the alcohol ether solvent is diethylene glycol methyl ether , A mixed solvent of tripropylene glycol methyl ether and diethylene glycol ether, the volume ratio of diethylene glycol methyl ether, tripropylene glycol methyl ether, and diethylene glycol ether is 4:4:2;
  • Pre-dispersion In parts by weight, add 5.8 parts of mixed alcohol ether solvent and 42 parts of alkyd resin to the feeding dispersion tank and stir evenly; sequentially add 0.2 parts of wetting agent, 0.4 part of dispersant, and 0.3 part of gas phase Silica, disperse at high speed at 1000rpm for 15min; then add 16 parts of titanium dioxide and 15 parts of barium sulfate in sequence, stir at high speed at 1000rpm to make it uniform; among them, the alcohol ether solvent is diethylene glycol butyl ether :Dipropylene glycol butyl ether mixed solvent, the volume ratio of diethylene glycol butyl ether and dipropylene glycol butyl ether is 3:7;
  • Pre-dispersion In parts by weight, add 7.9 parts of mixed alcohol ether solvent and 44 parts of alkyd resin to the feeding dispersion tank and stir evenly; add 0.3 parts of wetting agent, 0.5 parts of dispersant, and 0.35 parts of gas phase in sequence Silica, disperse at high speed at 1000rpm for 15min; then add 16 parts of titanium dioxide and 5 parts of barium sulfate in sequence, and stir at high speed at 1000rpm to make it uniform; among them, the alcohol ether solvent is diethylene glycol methyl ether , A mixed solvent of diethylene glycol ethyl ether and tripropylene glycol methyl ether, the volume ratio of diethylene glycol methyl ether, diethylene glycol ethyl ether and tripropylene glycol methyl ether is 3:3:4;
  • Pre-dispersion In parts by weight, add 5.5 parts of mixed alcohol ether solvent and 42.7 parts of alkyd resin to the feeding dispersion tank and stir evenly; add 0.3 part of wetting agent, 0.3 part of dispersant, and 0.3 part of gas phase in sequence Silica, disperse at high speed for 15 minutes at 1000 rpm; then add 16 parts of titanium dioxide and 6 parts of barium sulfate in sequence, and stir at high speed at 1000 rpm to make it uniform; among them, the alcohol ether solvents are dipropylene glycol methyl ether and dipropylene glycol methyl ether.
  • the mixed solvent of ethyl glycol ether, the volume ratio of dipropylene glycol methyl ether and diethylene glycol ether is 1:1;
  • the alkyd resin protective coating was prepared according to the method of Example 1. The difference from Example 1 is that the traditional alkyd resin prepared with fatty acid as a raw material is used.
  • the flash point of the high flash point alkyd resin protective coating provided by the present invention is significantly higher than the required index, and the other technical indexes also meet the requirements. It shows that the alkyd resin protective coating provided by the present invention has a high flash point, is safer in the process of production, transportation and use; has excellent acid resistance, alkali resistance, weather resistance and other properties; and has low toxicity and is green and environmentally friendly.

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  • Engineering & Computer Science (AREA)
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  • Wood Science & Technology (AREA)
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Abstract

A high flash point alkyd resin protective coating and a preparation method and an application thereof. The high flash point alkyd resin protective coating comprises the following components in parts by weight: 60-65 parts of alkyd resin, 15-20 parts of titanium dioxide, 5-15 parts of barium sulfate, 5-10 parts of an alcohol ether solvent, 0.3-0.4 part of fumed silica, 0.2-0.4 part of a wetting agent, 0.3-0.5 part of a dispersing agent, 0.7-1 part of a drier and 0.2-0.3 part of anti-skinning agent. The preparation method comprises the following steps: mixing a part of the alcohol ether solvent, a part of alkyd resin, the wetting agent, the dispersing agent, fumed silica, titanium dioxide and barium sulfate, and grinding to obtain a slurry; mixing the obtained slurry, the remaining alkyd resin, the drier, the residual alcohol ether solvent and the anti-skinning agent to obtain the high flash point alkyd resin protective coating. The high flash point alkyd resin protective coating can be used for industrial anti-corrosion.

Description

一种高闪点醇酸树脂防护涂料及其制备方法High flash point alkyd resin protective coating and preparation method thereof
本申请要求于2019年09月23日提交中国专利局、申请号为CN201910898201.0、发明名称为“一种高闪点醇酸树脂防护涂料及其制备方法”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。This application claims the priority of a Chinese patent application filed with the Chinese Patent Office on September 23, 2019, the application number is CN201910898201.0, and the invention title is "a high flash point alkyd resin protective coating and its preparation method". The entire content is incorporated into this application by reference.
技术领域Technical field
本发明涉及涂料技术领域，尤其涉及一种高闪点醇酸树脂防护涂料及其制备方法。The invention relates to the technical field of coatings, in particular to a high flash point alkyd resin protective coating and a preparation method thereof.
背景技术Background technique
溶剂型涂料具有高装饰性、耐久的保护性、多功能性，在现代工业、国防、信息、生化、新材料、航空航天、海洋开发、可再生能源开发、环保等领域应用广泛。溶剂型涂料中的有机溶剂发挥着关键性作用，例如，有机溶剂能够降低涂料的表面张力，改善颜料润湿与分散性能，调整成膜物树脂和涂料的黏度，改善涂料的流动性等，使涂料产品满足不同的制漆要求和施工要求。Solvent-based coatings are highly decorative, durable, protective, and multifunctional. They are widely used in modern industry, national defense, information, biochemistry, new materials, aerospace, marine development, renewable energy development, and environmental protection. Organic solvents in solvent-based coatings play a key role. For example, organic solvents can reduce the surface tension of the coating, improve the wetting and dispersion properties of the pigment, adjust the viscosity of the film-forming resin and coating, and improve the fluidity of the coating. Coating products meet different paint requirements and construction requirements.
然而，现有的溶剂型涂料采用的有机溶剂大部分易燃易挥发、污染环境、对人体有害，尤其是其低闪点使得涂料在生产、运输与使用过程中存在很大的安全隐患；而且在溶剂型涂料的生产、施工、干燥、固化成膜过程中，其含有的挥发性有机物(VOC)以气态分子的形式散发至空气中，不仅造成了环境污染，同时也对人体健康构成了威胁。However, most of the organic solvents used in the existing solvent-based coatings are flammable and volatile, pollute the environment, and are harmful to the human body. In particular, their low flash point makes the coatings have great safety hazards during production, transportation and use; and During the production, construction, drying, curing and film formation of solvent-based coatings, the volatile organic compounds (VOC) contained in it are emitted into the air in the form of gaseous molecules, which not only causes environmental pollution, but also poses a threat to human health. .
发明内容Summary of the invention
本发明的目的在于提供一种高闪点醇酸树脂防护涂料及其制备方法和应用，本发明提供的高闪点醇酸树脂防护涂料阻热效果好、施工方便且具有美化环境的作用。The purpose of the present invention is to provide a high flash point alkyd resin protective coating and its preparation method and application. The high flash point alkyd resin protective coating provided by the present invention has good heat resistance effect, convenient construction and has the effect of beautifying the environment.
为了解决上述技术问题，本发明采用的技术方案是：In order to solve the above technical problems, the technical solutions adopted by the present invention are:
本发明提供了一种高闪点醇酸树脂防护涂料，包括以下重量份数的组分：The present invention provides a high flash point alkyd resin protective coating, which comprises the following components in parts by weight:
醇酸树脂 60～65份；Alkyd resin 60～65 parts;
钛白粉 15～20份；15-20 parts of titanium dioxide;
硫酸钡 5～15份；5-15 parts of barium sulfate;
醇醚类溶剂 5～10份；Alcohol ether solvent 5-10 parts;
气相二氧化硅 0.3～0.4份；0.3～0.4 parts of fumed silica;
润湿剂 0.2～0.4份；Wetting agent 0.2～0.4 parts;
分散剂 0.3～0.5份；Dispersant 0.3～0.5 parts;
催干剂 0.7～1份；Drying agent 0.7～1 parts;
防结皮剂 0.2～0.3份。Anti-skinning agent 0.2 ~ 0.3 parts.
优选的，所述醇酸树脂为天然植物油经高温反应制备得到；所述高温反应的温度为180～200℃，时间为14～15h。Preferably, the alkyd resin is prepared from natural vegetable oil through a high-temperature reaction; the temperature of the high-temperature reaction is 180-200°C, and the time is 14-15h.
优选的，所述醇酸树脂在25℃条件下的粘度为250～350s。Preferably, the viscosity of the alkyd resin at 25°C is 250-350s.
优选的，所述高闪点醇酸树脂防护涂料在25℃条件下的粘度为190～210s。Preferably, the viscosity of the high flash point alkyd resin protective coating at 25°C is 190-210s.
优选的，所述钛白粉为金红石型钛白粉。Preferably, the titanium dioxide is rutile titanium dioxide.
优选的，所述硫酸钡的粒径为1100～1300目。Preferably, the particle size of the barium sulfate is 1100-1300 mesh.
优选的，所述醇醚类溶剂包括二乙二醇甲醚、二乙二醇乙醚、二乙二醇丁醚、二丙二醇甲醚、二丙二醇丁醚、二甘醇乙醚和三丙二醇甲醚中的一种或几种。Preferably, the alcohol ether solvent includes diethylene glycol methyl ether, diethylene glycol ethyl ether, diethylene glycol butyl ether, dipropylene glycol methyl ether, dipropylene glycol butyl ether, diethylene glycol ethyl ether and tripropylene glycol methyl ether. One or more of them.
优选的，所述催干剂包括金属氧化物、金属盐和稀土催干剂中的一种或几种。Preferably, the drier includes one or more of metal oxides, metal salts and rare earth driers.
优选的，所述金属氧化物和金属盐中的金属独立地包括钴、锰、铁、锌或钙。Preferably, the metal in the metal oxide and metal salt independently includes cobalt, manganese, iron, zinc or calcium.
本发明提供了上述技术方案所述高闪点醇酸树脂防护涂料的制备方法，包括以下步骤：The present invention provides a preparation method of the high flash point alkyd resin protective coating described in the above technical scheme, which includes the following steps:
将部分醇醚类溶剂、部分醇酸树脂、润湿剂、分散剂、气相二氧化硅、钛白粉和硫酸钡进行混合后研磨，得到浆料；Part of the alcohol ether solvent, part of the alkyd resin, wetting agent, dispersant, fumed silica, titanium dioxide and barium sulfate are mixed and then ground to obtain a slurry;
将所述浆料、剩余醇酸树脂、催干剂、剩余醇醚类溶剂和防结皮剂混合，得到醇酸树脂防护涂料。The slurry, the remaining alkyd resin, the drier, the remaining alcohol ether solvent and the anti-skinning agent are mixed to obtain the alkyd resin protective coating.
优选的，所述部分醇醚类溶剂占醇醚类溶剂总质量的75～85％；Preferably, the partial alcohol ether solvent accounts for 75-85% of the total mass of the alcohol ether solvent;
所述部分醇酸树脂占醇酸树脂总质量的65～75％；The part of the alkyd resin accounts for 65-75% of the total mass of the alkyd resin;
所述浆料中固体颗粒的细度≤30μm。The fineness of the solid particles in the slurry is less than or equal to 30 μm.
本发明还提供了所述的高闪点醇酸树脂防护涂料或所述制备方法制 备的醇酸树脂防护涂料在工业防腐中的应用。The present invention also provides the application of the high flash point alkyd resin protective coating or the alkyd resin protective coating prepared by the preparation method in industrial anticorrosion.
优选的，所述应用为在钢结构防护中的应用。Preferably, the application is an application in the protection of steel structures.
本发明提供了一种高闪点醇酸树脂防护涂料，包括以下重量份数的组分：醇酸树脂60～65份；钛白粉15～20份；硫酸钡5～15份；醇醚类溶剂5～10份；气相二氧化硅0.3～0.4份；润湿剂0.2～0.4份；分散剂0.3～0.5份；催干剂0.7～1份；防结皮剂0.2～0.3份。本发明以醇酸树脂为主体，并添加醇醚类溶剂、钛白粉、硫酸钡、气相二氧化硅，在润湿剂、分散剂、催干剂和防结皮剂的作用下，得到的醇酸树脂防护涂料闪点高，在生产、运输和使用的过程中更加安全，属于安全型防护涂料；耐酸、耐碱、耐候性等性能优异；而且毒性小，绿色环保。The present invention provides a high flash point alkyd resin protective coating, which comprises the following components in parts by weight: 60 to 65 parts of alkyd resin; 15 to 20 parts of titanium dioxide; 5 to 15 parts of barium sulfate; alcohol ether solvents 5-10 parts; 0.3-0.4 parts of fumed silica; 0.2-0.4 parts of wetting agent; 0.3-0.5 parts of dispersing agent; 0.7-1 parts of drier; 0.2-0.3 parts of anti-skinning agent. The present invention takes alkyd resin as the main body, and adds alcohol ether solvents, titanium dioxide, barium sulfate, fumed silica, and under the action of wetting agent, dispersant, drier and anti-skinning agent, the alcohol obtained The acid resin protective coating has a high flash point and is safer during production, transportation and use. It is a safe protective coating; it has excellent properties such as acid resistance, alkali resistance, and weather resistance; it has low toxicity and is environmentally friendly.
本发明提供了所述高闪点醇酸树脂防护涂料的制备方法，操作简单，适宜规模化生产。The invention provides a preparation method of the high flash point alkyd resin protective coating, which has simple operation and is suitable for large-scale production.
具体实施方式detailed description
本发明提供了一种高闪点醇酸树脂防护涂料，包括以下重量份数的组分：The present invention provides a high flash point alkyd resin protective coating, which comprises the following components in parts by weight:
醇酸树脂 60～65份；Alkyd resin 60～65 parts;
钛白粉 15～20份；15-20 parts of titanium dioxide;
硫酸钡 5～15份；5-15 parts of barium sulfate;
醇醚类溶剂 5～10份；Alcohol ether solvent 5-10 parts;
气相二氧化硅 0.3～0.4份；0.3～0.4 parts of fumed silica;
润湿剂 0.2～0.4份；Wetting agent 0.2～0.4 parts;
分散剂 0.3～0.5份；Dispersant 0.3～0.5 parts;
催干剂 0.7～1份；Drying agent 0.7～1 parts;
防结皮剂 0.2～0.3份。Anti-skinning agent 0.2 ~ 0.3 parts.
在本发明中，若无特殊说明，所有的原料组分均为本领域技术人员熟知的市售商品。In the present invention, unless otherwise specified, all raw material components are commercially available products well known to those skilled in the art.
在本发明中，按重量份数计，制备所述高闪点醇酸树脂防护涂料的原料包括醇酸树脂60～65份，优选为61～65份，更优选为61份、62份、63 份、64份或65份。在本发明中，所述醇酸树脂的用量过多则醇酸树脂防护涂料不易干燥，用量过少则醇酸树脂防护涂料不能成膜且漆膜性能差。在本发明中，所述醇酸树脂优选为天然植物油经高温反应制备得到。在本发明中，所述高温反应过程中，天然植物油先发生醇解，然后进行聚合。在本发明中，所述天然植物油优选包括大豆油、亚麻油和棉籽油中的一种或几种，更优选为大豆油、亚麻油或棉籽油。在本发明中，所述高温反应的温度优选为180～200℃，更优选为185～195℃；所述高温反应的时间优选为14～15h，更优选为15h。完成所述高温反应后，本发明优选还包括加入二乙二醇丁醚和/或二乙二醇甲醚溶剂调整所得树脂的粘度。在本发明中，所述醇酸树脂的粘度优选为250～350s(采用涂-4粘度计进行测定，测试温度为25℃)。本发明以醇酸树脂为成膜物质制成的涂料比直接以天然植物油为原料制备的涂料的闪点更高，而且本发明提供的醇酸树脂防护涂料的附着力、柔韧性、耐碱性、耐酸性、耐磨性和耐候性好，同时其硬度高、漆膜平滑细致、无毒、无污染，且可以有效延长醇酸树脂防护涂料的漆膜寿命。In the present invention, in parts by weight, the raw materials for preparing the high flash point alkyd resin protective coating include 60 to 65 parts of alkyd resin, preferably 61 to 65 parts, more preferably 61 parts, 62 parts, and 63 parts. Servings, 64 servings, or 65 servings. In the present invention, if the amount of the alkyd resin is too much, the alkyd resin protective coating will not be easy to dry, and if the amount is too small, the alkyd resin protective coating will not be able to form film and the paint film performance will be poor. In the present invention, the alkyd resin is preferably prepared from natural vegetable oil through high-temperature reaction. In the present invention, during the high-temperature reaction process, the natural vegetable oil first undergoes alcoholysis and then undergoes polymerization. In the present invention, the natural vegetable oil preferably includes one or more of soybean oil, linseed oil and cottonseed oil, more preferably soybean oil, linseed oil or cottonseed oil. In the present invention, the temperature of the high-temperature reaction is preferably 180-200°C, more preferably 185-195°C; the time of the high-temperature reaction is preferably 14-15h, more preferably 15h. After completing the high-temperature reaction, the present invention preferably further includes adding diethylene glycol butyl ether and/or diethylene glycol methyl ether solvent to adjust the viscosity of the obtained resin. In the present invention, the viscosity of the alkyd resin is preferably 250-350s (measured with a Tu-4 viscometer, and the test temperature is 25°C). The coating made of alkyd resin as the film-forming substance of the present invention has a higher flash point than the coating prepared directly from natural vegetable oil, and the adhesion, flexibility and alkali resistance of the alkyd resin protective coating provided by the present invention , Acid resistance, abrasion resistance and weather resistance are good, at the same time its hardness is high, the paint film is smooth and fine, non-toxic, non-polluting, and can effectively extend the life of the alkyd resin protective coating.
在本发明中，以所述醇酸树脂的重量份数为基准，制备所述高闪点醇酸树脂防护涂料的原料包括钛白粉15～20份，优选为16～20份，更优选为16份、17份、18份、19份或20份。在本发明中，所述钛白粉的用量过多会影响醇酸树脂防护涂料成膜效果，用量过少会影响醇酸树脂防护涂料的颜色。在本发明中，所述钛白粉优选为金红石型钛白粉，更优选为氯化法金红石型钛白粉。本发明将钛白粉与其他原料配合使用，能够提高醇酸树脂防护涂料的性能。In the present invention, based on the parts by weight of the alkyd resin, the raw materials for preparing the high flash point alkyd resin protective coating include 15-20 parts of titanium dioxide, preferably 16-20 parts, and more preferably 16 parts. Servings, 17 servings, 18 servings, 19 servings, or 20 servings. In the present invention, too much amount of the titanium dioxide will affect the film-forming effect of the alkyd resin protective coating, and too little amount will affect the color of the alkyd resin protective coating. In the present invention, the titanium dioxide is preferably rutile-type titanium dioxide, more preferably chlorinated rutile-type titanium dioxide. The invention uses titanium dioxide in combination with other raw materials to improve the performance of the alkyd resin protective coating.
在本发明中，以所述醇酸树脂的重量份数为基准，制备所述高闪点醇酸树脂防护涂料的原料包括硫酸钡5～15份，优选为6～15份，更优选为7份、8份、9份、10份、11份、12份、13份、14份或15份。在本发明中，所述硫酸钡的粒径优选为1100～1300目，更优选为1150～1250目，最优选为1200目。在本发明中，所述硫酸钡的作用是填料；所述硫酸钡的用量过多会影响醇酸树脂防护涂料成膜效果，用量过少会影响醇酸树脂防护涂料漆膜的机械性能。本发明将硫酸钡与其他原料配合使用，能够提高醇酸树脂防护涂料的性能。In the present invention, based on the parts by weight of the alkyd resin, the raw material for preparing the high flash point alkyd resin protective coating includes 5-15 parts of barium sulfate, preferably 6-15 parts, more preferably 7 Servings, 8, 9, 10, 11, 12, 13, 14, or 15. In the present invention, the particle size of the barium sulfate is preferably 1100 to 1300 mesh, more preferably 1150 to 1250 mesh, and most preferably 1200 mesh. In the present invention, the function of the barium sulfate is a filler; too much amount of the barium sulfate will affect the film-forming effect of the alkyd resin protective coating, and too little amount will affect the mechanical properties of the alkyd resin protective coating film. The invention uses barium sulfate in combination with other raw materials to improve the performance of the alkyd resin protective coating.
在本发明中，以所述醇酸树脂的重量份数为基准，制备所述高闪点醇酸树脂防护涂料的原料包括醇醚类溶剂5～10份，优选为6～10份，更优选为6份、7份、8份、9份或10份。在本发明中，所述醇醚类溶剂优选包括二乙二醇甲醚、二乙二醇乙醚、二乙二醇丁醚、二丙二醇甲醚、二丙二醇丁醚、二甘醇乙醚和三丙二醇甲醚中的一种或几种。在本发明中，当所述醇醚类溶剂为两种以上的醇醚类溶剂时，本发明对于所述不同种类的醇醚类溶剂的质量比没有特殊限定，任意比例均可。在本发明中，所述醇醚类溶剂的用量过多或过少均会影响醇酸树脂防护涂料的粘度，进而影响其成膜效果和性能。本发明将醇醚类溶剂与其他原料配合使用，能够提高醇酸树脂防护涂料的性能。In the present invention, based on the parts by weight of the alkyd resin, the raw materials for preparing the high flash point alkyd resin protective coating include 5-10 parts of alcohol ether solvents, preferably 6-10 parts, more preferably It is 6, 7, 8, 9 or 10 servings. In the present invention, the alcohol ether solvent preferably includes diethylene glycol methyl ether, diethylene glycol ethyl ether, diethylene glycol butyl ether, dipropylene glycol methyl ether, dipropylene glycol butyl ether, diethylene glycol ethyl ether and tripropylene glycol One or more of methyl ether. In the present invention, when the alcohol ether solvents are two or more kinds of alcohol ether solvents, the present invention does not specifically limit the mass ratio of the different types of alcohol ether solvents, and any ratio is acceptable. In the present invention, too much or too little amount of the alcohol ether solvent will affect the viscosity of the alkyd resin protective coating, thereby affecting its film-forming effect and performance. In the invention, the alcohol ether solvent is used in combination with other raw materials to improve the performance of the alkyd resin protective coating.
在本发明中，以所述醇酸树脂的重量份数为基准，制备所述高闪点醇酸树脂防护涂料的原料包括气相二氧化硅0.3～0.4份，优选为0.32～0.4份，更优选为0.32份、0.34份、0.36份、0.38份或0.40份。在本发明中，所述气相二氧化硅的作用是防止其他原料沉淀；所述气相二氧化硅的用量过多会导致醇酸树脂防护涂料的粘度过大，用量过少起不到防沉效果。本发明将气相二氧化硅与其他原料配合使用，能够提高醇酸树脂防护涂料的性能。In the present invention, based on the parts by weight of the alkyd resin, the raw materials for preparing the high flash point alkyd resin protective coating include 0.3 to 0.4 parts of fumed silica, preferably 0.32 to 0.4 parts, more preferably It is 0.32 part, 0.34 part, 0.36 part, 0.38 part or 0.40 part. In the present invention, the function of the fumed silica is to prevent the precipitation of other raw materials; too much of the fumed silica will cause the viscosity of the alkyd resin protective coating to be too high, and the amount of too little will not have the anti-settling effect. . The invention uses fumed silica in combination with other raw materials to improve the performance of the alkyd resin protective coating.
在本发明中，以所述醇酸树脂的重量份数为基准，制备所述高闪点醇酸树脂防护涂料的原料包括润湿剂0.2～0.4份，优选为0.22～0.4份，更优选为0.25份、0.3份、0.35份或0.40份。本发明对于所述润湿剂的具体种类没有特殊限定，采用本领域熟知的润湿剂即可，具体如硅油。在本发明中，所述润湿剂的作用是润湿颜填料，进而有利于提高钛白粉、硫酸钡的研磨效率以及醇酸树脂对其他原料的包覆，防止钛白粉、硫酸钡等原料浮色。在本发明中，所述润湿剂的用量过多会导致醇酸树脂防护涂料漆膜缩孔，用量过少会导致醇酸树脂防护涂料漆膜发花。本发明将润湿剂与其他原料配合使用，能够提高醇酸树脂防护涂料的性能。In the present invention, based on the parts by weight of the alkyd resin, the raw materials for preparing the high flash point alkyd resin protective coating include 0.2 to 0.4 parts of a wetting agent, preferably 0.22 to 0.4 parts, more preferably 0.25 parts, 0.3 parts, 0.35 parts or 0.40 parts. In the present invention, the specific type of the wetting agent is not particularly limited, as long as the wetting agent is well known in the art, such as silicone oil. In the present invention, the function of the wetting agent is to wet the pigments and fillers, thereby helping to improve the grinding efficiency of titanium dioxide and barium sulfate and the coating of other raw materials by alkyd resin, and prevent the floating of raw materials such as titanium dioxide and barium sulfate. color. In the present invention, too much amount of the wetting agent will cause shrinkage of the alkyd resin protective coating film, and too little amount will cause the alkyd resin protective coating film to bloom. The invention uses the wetting agent in combination with other raw materials to improve the performance of the alkyd resin protective coating.
在本发明中，以所述醇酸树脂的重量份数为基准，制备所述高闪点醇酸树脂防护涂料的原料包括分散剂0.3～0.5份，优选为0.35～0.5份，更优选为0.35份、0.4份、0.45份或0.5份。在本发明中，所述分散剂优选包括磷酸酯类分散剂。在本发明中，所述分散剂的作用是分散颜填料；所述 分散剂的用量过多会导致醇酸树脂防护涂料漆膜干性较慢，用量过少会导致醇酸树脂防护涂料漆膜浮色、涂料沉淀。本发明将分散剂与其他原料配合使用，能够提高醇酸树脂防护涂料的性能。In the present invention, based on the parts by weight of the alkyd resin, the raw materials for preparing the high flash point alkyd resin protective coating include 0.3 to 0.5 parts of dispersant, preferably 0.35 to 0.5 parts, more preferably 0.35 Parts, 0.4 parts, 0.45 parts or 0.5 parts. In the present invention, the dispersant preferably includes a phosphate ester-based dispersant. In the present invention, the function of the dispersant is to disperse pigments and fillers; too much of the dispersant will result in slower drying of the alkyd resin protective coating film, and too little will cause the alkyd resin protective coating film to dry Floating color, paint precipitation. The invention uses the dispersant in combination with other raw materials to improve the performance of the alkyd resin protective coating.
在本发明中，以所述醇酸树脂的重量份数为基准，制备所述高闪点醇酸树脂防护涂料的原料包括催干剂0.7～1份，优选为0.75～1份，更优选为0.75份、0.8份、0.85份、0.9份、0.95份或1份。在本发明中，所述催干剂优选包括金属氧化物、金属盐和稀土催干剂中的一种或几种，更优选包括金属氧化物、金属盐或稀土催干剂；所述金属氧化物和金属盐中的金属独立地包括钴、锰、铁、锌或钙。在本发明中，当采用两种以上的催干剂时，本发明对于所述不同种类的催干剂的质量比没有特殊限定，任意比例均可。在本发明中，所述催干剂的作用是加快醇酸树脂防护涂料漆膜干燥；所述催干剂的用量过多会导致醇酸树脂防护涂料易结皮，用量过少会导致醇酸树脂防护涂料漆膜不易干燥。本发明将催干剂与其他原料配合使用，能够提高醇酸树脂防护涂料的性能。In the present invention, based on the parts by weight of the alkyd resin, the raw materials for preparing the high flash point alkyd resin protective coating include 0.7 to 1 part of drier, preferably 0.75 to 1 part, more preferably 0.75 part, 0.8 part, 0.85 part, 0.9 part, 0.95 part or 1 part. In the present invention, the drier preferably includes one or more of metal oxides, metal salts and rare earth driers, and more preferably includes metal oxides, metal salts or rare earth driers; the metal oxide The metal in the substance and the metal salt independently includes cobalt, manganese, iron, zinc, or calcium. In the present invention, when two or more kinds of driers are used, the present invention has no special limitation on the mass ratio of the different types of driers, and any ratio can be used. In the present invention, the function of the drier is to accelerate the drying of the paint film of the alkyd resin protective coating; too much amount of the drier will cause the alkyd resin protective coating to be easily skinned, and too little amount will cause the alkyd resin The paint film of the resin protective coating is not easy to dry. The invention uses the drier in combination with other raw materials to improve the performance of the alkyd resin protective coating.
在本发明中，以所述醇酸树脂的重量份数为基准，制备所述高闪点醇酸树脂防护涂料的原料包括防结皮剂0.2～0.3份，优选为0.22～0.3份，更优选为0.22份、0.24份、0.26份、0.28份或0.3份。本发明对于所述防结皮剂的种类没有特殊限定，采用本领域熟知的防结皮剂即可，具体如甲乙酮肟。在本发明中，所述防结皮剂的作用是防止醇酸树脂防护涂料在储存过程中结皮；所述防结皮剂的用量过多会导致醇酸树脂防护涂料漆膜不干，用量过少不能达到防结皮的效果。本发明将防结皮剂与其他原料配合使用，能够提高醇酸树脂防护涂料的性能。In the present invention, based on the parts by weight of the alkyd resin, the raw materials for preparing the high flash point alkyd resin protective coating include 0.2-0.3 parts of anti-skinning agent, preferably 0.22-0.3 parts, more preferably It is 0.22 part, 0.24 part, 0.26 part, 0.28 part or 0.3 part. In the present invention, the type of the anti-skinning agent is not particularly limited, as long as the anti-skinning agent is well-known in the art, such as methyl ethyl ketoxime. In the present invention, the function of the anti-skinning agent is to prevent the alkyd resin protective coating from skinning during storage; the excessive amount of the anti-skinning agent will cause the alkyd resin protective coating film to not dry. Too little can not achieve the effect of anti-skinning. The invention uses the anti-skinning agent in combination with other raw materials to improve the performance of the alkyd resin protective coating.
本发明以醇酸树脂为主体，并添加醇醚类溶剂、钛白粉、硫酸钡、气相二氧化硅，在润湿剂、分散剂、催干剂和防结皮剂的作用下，得到的醇酸树脂防护涂料闪点高，在生产、运输和使用的过程中更加安全；耐酸、耐碱、耐候性等性能优异；而且毒性小，绿色环保。The present invention takes alkyd resin as the main body, and adds alcohol ether solvents, titanium dioxide, barium sulfate, fumed silica, and under the action of wetting agent, dispersant, drier and anti-skinning agent, the alcohol obtained The acid resin protective coating has a high flash point and is safer during production, transportation and use; it has excellent acid resistance, alkali resistance, and weather resistance; it has low toxicity and is environmentally friendly.
本发明还提供了上述技术方案所述高闪点醇酸树脂防护涂料的制备方法，包括以下步骤：The present invention also provides a preparation method of the high flash point alkyd resin protective coating described in the above technical scheme, which includes the following steps:
将部分醇醚类溶剂、部分醇酸树脂、润湿剂、分散剂、气相二氧化硅、钛白粉和硫酸钡混合后研磨，得到浆料；Part of the alcohol ether solvent, part of the alkyd resin, wetting agent, dispersant, fumed silica, titanium dioxide and barium sulfate are mixed and then ground to obtain a slurry;
将所述浆料、剩余醇酸树脂、催干剂、剩余醇醚类溶剂和防结皮剂混合，得到醇酸树脂防护涂料。The slurry, the remaining alkyd resin, the drier, the remaining alcohol ether solvent and the anti-skinning agent are mixed to obtain the alkyd resin protective coating.
本发明将部分醇醚类溶剂、部分醇酸树脂、润湿剂、分散剂、气相二氧化硅、钛白粉和硫酸钡混合后研磨，得到浆料。In the present invention, part of alcohol ether solvent, part of alkyd resin, wetting agent, dispersant, fumed silica, titanium dioxide and barium sulfate are mixed and then ground to obtain slurry.
在本发明中，所述部分醇酸树脂优选占醇酸树脂总质量的65～75％，更优选为68～72％，最优选为70％。在本发明中，所述部分醇醚类溶剂优选占醇醚类溶剂总质量的75～85％，更优选为78～82％，最优选为80％。In the present invention, the partial alkyd resin preferably accounts for 65 to 75% of the total mass of the alkyd resin, more preferably 68 to 72%, and most preferably 70%. In the present invention, the partial alcohol ether solvent preferably accounts for 75 to 85% of the total mass of the alcohol ether solvent, more preferably 78 to 82%, and most preferably 80%.
在本发明中，所述混合优选为搅拌混合，所述搅拌混合的速度优选为800～1000rpm，更优选为850～1000rpm，最优选为900～1000rpm；本发明采用高的搅拌速度，能够提高原料的分散均匀性。在本发明中，所述混合的顺序优选为将部分醇酸树脂和部分醇醚类溶剂进行第一搅拌混合，依次加入润湿剂、分散剂、气相二氧化硅进行第二搅拌混合，然后再加入钛白粉和硫酸钡进行第三搅拌混合。本发明中对于第一搅拌混合、第二搅拌混合和第三搅拌混合的时间没有特殊限定，能够保证原料混合均匀即可。本发明采用上述混合顺序，能够提高各原料的分散均匀性。In the present invention, the mixing is preferably stirring and mixing, and the speed of the stirring and mixing is preferably 800-1000 rpm, more preferably 850-1000 rpm, most preferably 900-1000 rpm; the present invention adopts a high stirring speed, which can increase the raw material The uniformity of dispersion. In the present invention, the order of the mixing is preferably to perform the first stirring and mixing of part of the alkyd resin and part of the alcohol ether solvent, sequentially adding the wetting agent, dispersant, and fumed silica for the second stirring and mixing, and then Add titanium dioxide and barium sulfate to perform the third stirring and mixing. In the present invention, the time for the first stirring and mixing, the second stirring and mixing and the third stirring and mixing is not particularly limited, as long as the raw materials can be uniformly mixed. The present invention adopts the above-mentioned mixing sequence, which can improve the dispersion uniformity of each raw material.
在本发明中，所述浆料中固体颗粒的细度优选≤30μm。在本发明中，所述研磨优选在砂磨机中进行，所述研磨机的转速优选为500～600rpm，本发明对于所述研磨的时间没有特殊限定，能够保证所述浆料中固体颗粒的细度达到要求即可。In the present invention, the fineness of the solid particles in the slurry is preferably ≤ 30 μm. In the present invention, the grinding is preferably carried out in a sand mill, and the rotation speed of the grinder is preferably 500 to 600 rpm. The present invention has no special limitation on the grinding time, which can ensure the solid particles in the slurry. The fineness can meet the requirements.
得到浆料后，本发明将所述浆料、剩余醇酸树脂、催干剂、剩余醇醚类溶剂和防结皮剂混合，得到醇酸树脂防护涂料。After obtaining the slurry, the present invention mixes the slurry, the remaining alkyd resin, the drier, the remaining alcohol ether solvent and the anti-skinning agent to obtain the alkyd resin protective coating.
在本发明中，所述剩余醇酸树脂优选占醇酸树脂总质量的25～35％，更优选为28～32％，最优选为30％；所述部分醇酸树脂和剩余醇酸树脂的总质量计为100％。在本发明中，所述部分醇醚类溶剂优选占醇醚类溶剂总质量的15～25％，更优选为18～22％，最优选为20％；所述部分醇醚类溶剂和醇醚类溶剂的总质量计为100％。In the present invention, the remaining alkyd resin preferably accounts for 25 to 35% of the total mass of the alkyd resin, more preferably 28 to 32%, most preferably 30%; the partial alkyd resin and the remaining alkyd resin The total mass is calculated as 100%. In the present invention, the partial alcohol ether solvent preferably accounts for 15-25% of the total mass of the alcohol ether solvent, more preferably 18-22%, most preferably 20%; the partial alcohol ether solvent and the alcohol ether The total mass of similar solvents is calculated as 100%.
在本发明中，所述混合优选为搅拌混合，本发明对于搅拌混合的速度没有特殊限定，采用本领域熟知的搅拌速度即可。In the present invention, the mixing is preferably stirring and mixing. In the present invention, there is no special limitation on the stirring and mixing speed, as long as the stirring speed is well known in the art.
在本发明中，所述混合的顺序优选为将浆料、剩余的醇酸树脂和催干剂搅拌混合，加入剩余醇醚类溶剂调节粘度，然后加入防结皮剂搅拌混合 15min。在本发明中，所述醇酸树脂防护涂料在25℃条件下的粘度优选为190～210s。In the present invention, the mixing sequence is preferably to stir and mix the slurry, the remaining alkyd resin and the drier, add the remaining alcohol ether solvent to adjust the viscosity, and then add the anti-skinning agent and stir and mix for 15 minutes. In the present invention, the viscosity of the alkyd resin protective coating at 25°C is preferably 190-210s.
完成所述混合后，本发明优选还包括将所得醇酸树脂防护涂料进行包装。本发明对于所述包装的方式没有特殊限定，采用本领域熟知的包装方式即可。After completing the mixing, the present invention preferably further includes packaging the obtained alkyd resin protective coating. In the present invention, there is no special limitation on the packaging method, as long as the packaging method well known in the art is adopted.
本发明提供的制备方法中醇酸树脂分两次加入，第一次加入醇酸树脂是为了与润湿剂、分散剂、气相二氧化硅、钛白粉和硫酸钡均匀分散，第二次加入醇酸树脂是为增加涂料的光泽、硬度、耐候性等性能；若一次性加入，一是增加分散时间且会使得分散不均匀，影响涂料中各原料的分散效率，且会造成电、冷却水和设备的损耗，大大提高生产成本；二是会导致涂料性能不达标。本发明提供的制备方法，工艺简单，制备的醇酸树脂防护涂料对环境和人体无害，绿色、安全、环保。In the preparation method provided by the present invention, the alkyd resin is added in two times. The first time the alkyd resin is added is to uniformly disperse with the wetting agent, dispersant, fumed silica, titanium dioxide and barium sulfate, and the second time the alcohol is added. Acid resin is to increase the gloss, hardness, weather resistance and other properties of the coating; if added at one time, one is to increase the dispersion time and make the dispersion uneven, affecting the dispersion efficiency of the raw materials in the coating, and will cause electricity, cooling water and The loss of equipment greatly increases the production cost; second, it will cause the coating performance to fail to meet the standard. The preparation method provided by the invention has a simple process, the prepared alkyd resin protective coating is harmless to the environment and the human body, and is green, safe and environmentally friendly.
本发明还提供了上述技术方案所述高闪点醇酸树脂防护涂料或上述技术方案所述制备方法制备的高闪点醇酸树脂防护涂料在工业防腐中的应用，优选为在钢结构防护中的应用。The present invention also provides the application of the high flash point alkyd resin protective coating of the above technical solution or the high flash point alkyd resin protective coating prepared by the preparation method of the above technical solution in industrial anticorrosion, preferably in the protection of steel structures Applications.
下面结合实施例对本发明进一步说明。The present invention will be further described below in conjunction with embodiments.
实施例1Example 1
(1)将大豆油在180℃条件下反应14h，采用二乙二醇丁醚调整树脂粘度至300s，得到醇酸树脂；(1) The soybean oil was reacted at 180°C for 14 hours, and diethylene glycol butyl ether was used to adjust the resin viscosity to 300s to obtain an alkyd resin;
(2)预分散：按重量份数计，在投料分散缸中加6.3份混合醇醚类溶剂、45.5份醇酸树脂搅拌均匀；依次加入0.25份润湿剂、0.5份分散剂、0.3份气相二氧化硅，在1000rpm条件下高速分散15min；然后依次加入15份钛白粉、10份硫酸钡，在1000rpm条件下高速搅拌使至呈均匀状态；其中，醇醚类溶剂为二乙二醇甲醚、三丙二醇甲醚、二甘醇乙醚的混合溶剂，二乙二醇甲醚、三丙二醇甲醚、二甘醇乙醚的体积比为4:4:2；(2) Pre-dispersion: In parts by weight, add 6.3 parts of mixed alcohol ether solvent and 45.5 parts of alkyd resin to the feeding dispersion tank and stir evenly; add 0.25 part of wetting agent, 0.5 part of dispersant, and 0.3 part of gas phase in sequence Silica, disperse at a high speed for 15 minutes at 1000 rpm; then add 15 parts of titanium dioxide and 10 parts of barium sulfate in sequence, and stir at a high speed at 1000 rpm to make it uniform; among them, the alcohol ether solvent is diethylene glycol methyl ether , A mixed solvent of tripropylene glycol methyl ether and diethylene glycol ether, the volume ratio of diethylene glycol methyl ether, tripropylene glycol methyl ether, and diethylene glycol ether is 4:4:2;
(3)研磨：将所得物料用隔膜泵或齿轮泵吸入至砂磨机中，在550rpm条件下研磨至浆料中的固体颗粒的细度≤30μm，得到呈稳定状态的浆料；(3) Grinding: suck the obtained material into a sand mill with a diaphragm pump or a gear pump, and grind at 550 rpm until the fineness of the solid particles in the slurry is ≤ 30 μm to obtain a stable slurry;
(4)调漆：将所述浆料通过隔膜泵或齿轮泵打入至调漆缸中，加入19.5份醇酸树脂和0.8份氧化钴/氧化铁催干剂搅拌混合均匀，加入1.6份醇醚类溶剂进行调粘至粘度合格，加入0.25份防结皮剂搅拌15min后包 装，得到醇酸树脂防护涂料。(4) Paint mixing: The slurry is pumped into the paint mixing tank through a diaphragm pump or a gear pump, 19.5 parts of alkyd resin and 0.8 parts of cobalt oxide/iron oxide drier are added and mixed evenly, and 1.6 parts of alcohol are added. Adjust the viscosity of ether solvents until the viscosity is qualified, add 0.25 parts of anti-skinning agent, stir for 15 minutes, and package to obtain alkyd resin protective coating.
实施例2Example 2
(1)将亚麻油在190℃条件下反应15h，采用二乙二醇丁醚调整树脂粘度至280s，得到醇酸树脂；(1) React linseed oil at 190°C for 15 hours, and adjust the resin viscosity to 280s with diethylene glycol butyl ether to obtain alkyd resin;
(2)预分散：按重量份数计，在投料分散缸中加5.8份混合醇醚类溶剂、42份醇酸树脂搅拌均匀；依次加入0.2份润湿剂、0.4份分散剂、0.3份气相二氧化硅，在1000rpm条件下高速分散15min；然后依次加入16份钛白粉、15份硫酸钡，在1000rpm条件下高速搅拌使至呈均匀状态；其中，醇醚类溶剂为二乙二醇丁醚：二丙二醇丁醚的混合溶剂，二乙二醇丁醚和二丙二醇丁醚的体积比为3:7；(2) Pre-dispersion: In parts by weight, add 5.8 parts of mixed alcohol ether solvent and 42 parts of alkyd resin to the feeding dispersion tank and stir evenly; sequentially add 0.2 parts of wetting agent, 0.4 part of dispersant, and 0.3 part of gas phase Silica, disperse at high speed at 1000rpm for 15min; then add 16 parts of titanium dioxide and 15 parts of barium sulfate in sequence, stir at high speed at 1000rpm to make it uniform; among them, the alcohol ether solvent is diethylene glycol butyl ether ：Dipropylene glycol butyl ether mixed solvent, the volume ratio of diethylene glycol butyl ether and dipropylene glycol butyl ether is 3:7;
(3)研磨：将所得物料用隔膜泵或齿轮泵吸入至砂磨机中，在550rpm条件下研磨至浆料中的固体颗粒的细度≤30μm，得到呈稳定状态的浆料；(3) Grinding: suck the obtained material into a sand mill with a diaphragm pump or a gear pump, and grind at 550 rpm until the fineness of the solid particles in the slurry is ≤ 30 μm to obtain a stable slurry;
(4)调漆：将所述浆料通过隔膜泵或齿轮泵打入至调漆缸中，加入18份醇酸树脂和0.7份氧化锌/氧化钙/氧化锰催干剂搅拌混合均匀，加入1.4份醇醚类溶剂进行调粘至粘度合格，加入0.22份防结皮剂搅拌15min后包装，得到醇酸树脂防护涂料。(4) Paint mixing: drive the slurry into the paint mixing tank through a diaphragm pump or a gear pump, add 18 parts of alkyd resin and 0.7 parts of zinc oxide/calcium oxide/manganese oxide drier, stir and mix evenly, add The viscosity of 1.4 parts of alcohol ether solvent is adjusted until the viscosity is qualified, and 0.22 part of anti-skinning agent is added and packaged after stirring for 15 minutes to obtain alkyd resin protective coating.
实施例3Example 3
(1)将棉籽油在200℃条件下反应15h，采用二乙二醇丁醚调整树脂粘度至340s，得到醇酸树脂；(1) React the cottonseed oil at 200°C for 15 hours, and adjust the resin viscosity to 340s with diethylene glycol butyl ether to obtain an alkyd resin;
(2)预分散：按重量份数计，在投料分散缸中加7.9份混合醇醚类溶剂、44份醇酸树脂搅拌均匀；依次加入0.3份润湿剂、0.5份分散剂、0.35份气相二氧化硅，在1000rpm条件下高速分散15min；然后依次加入16份钛白粉、5份硫酸钡，在1000rpm条件下高速搅拌使至呈均匀状态；其中，醇醚类溶剂为二乙二醇甲醚、二乙二醇乙醚和三丙二醇甲醚的混合溶剂，二乙二醇甲醚、二乙二醇乙醚和三丙二醇甲醚的体积比为3:3:4；(2) Pre-dispersion: In parts by weight, add 7.9 parts of mixed alcohol ether solvent and 44 parts of alkyd resin to the feeding dispersion tank and stir evenly; add 0.3 parts of wetting agent, 0.5 parts of dispersant, and 0.35 parts of gas phase in sequence Silica, disperse at high speed at 1000rpm for 15min; then add 16 parts of titanium dioxide and 5 parts of barium sulfate in sequence, and stir at high speed at 1000rpm to make it uniform; among them, the alcohol ether solvent is diethylene glycol methyl ether , A mixed solvent of diethylene glycol ethyl ether and tripropylene glycol methyl ether, the volume ratio of diethylene glycol methyl ether, diethylene glycol ethyl ether and tripropylene glycol methyl ether is 3:3:4;
(3)研磨：将所得物料用隔膜泵或齿轮泵吸入至砂磨机中，在550rpm条件下研磨至浆料中的固体颗粒的细度≤30μm，得到呈稳定状态的浆料；(3) Grinding: suck the obtained material into a sand mill with a diaphragm pump or a gear pump, and grind at 550 rpm until the fineness of the solid particles in the slurry is ≤ 30 μm to obtain a stable slurry;
(4)调漆：将所述浆料通过隔膜泵或齿轮泵打入至调漆缸中，加入19份醇酸树脂和0.75份催干剂搅拌混合均匀，加入2份醇醚类溶剂进行调粘至粘度合格，加入0.2份防结皮剂搅拌15min后包装，得到醇酸树脂 防护涂料。(4) Paint letting: The slurry is pumped into the paint letting tank through a diaphragm pump or a gear pump, 19 parts of alkyd resin and 0.75 parts of drier are added to mix evenly, and 2 parts of alcohol ether solvent are added for conditioning. When the viscosity is qualified, add 0.2 part of anti-skinning agent and stir for 15 minutes, then package to obtain alkyd resin protective coating.
实施例4Example 4
(1)将棉籽油和大豆油在200℃条件下反应15h，采用二乙二醇丁醚调整树脂粘度至290s，得到醇酸树脂；(1) Reacting cottonseed oil and soybean oil at 200°C for 15 hours, adjusting the resin viscosity to 290s with diethylene glycol butyl ether to obtain alkyd resin;
(2)预分散：按重量份数计，在投料分散缸中加5.5份混合醇醚类溶剂、42.7份醇酸树脂搅拌均匀；依次加入0.3份润湿剂、0.3份分散剂、0.3份气相二氧化硅，在1000rpm条件下高速分散15min；然后依次加入16份钛白粉、6份硫酸钡，在1000rpm条件下高速搅拌使至呈均匀状态；其中，醇醚类溶剂为二丙二醇甲醚和二甘醇乙醚的混合溶剂，二丙二醇甲醚和二甘醇乙醚的体积比为1:1；(2) Pre-dispersion: In parts by weight, add 5.5 parts of mixed alcohol ether solvent and 42.7 parts of alkyd resin to the feeding dispersion tank and stir evenly; add 0.3 part of wetting agent, 0.3 part of dispersant, and 0.3 part of gas phase in sequence Silica, disperse at high speed for 15 minutes at 1000 rpm; then add 16 parts of titanium dioxide and 6 parts of barium sulfate in sequence, and stir at high speed at 1000 rpm to make it uniform; among them, the alcohol ether solvents are dipropylene glycol methyl ether and dipropylene glycol methyl ether. The mixed solvent of ethyl glycol ether, the volume ratio of dipropylene glycol methyl ether and diethylene glycol ether is 1:1;
(3)研磨：将所得物料用隔膜泵或齿轮泵吸入至砂磨机中，在550rpm条件下研磨至浆料中的固体颗粒的细度≤30μm，得到呈稳定状态的浆料；(3) Grinding: suck the obtained material into a sand mill with a diaphragm pump or a gear pump, and grind at 550 rpm until the fineness of the solid particles in the slurry is ≤ 30 μm to obtain a stable slurry;
(4)调漆：将所述浆料通过隔膜泵或齿轮泵打入至调漆缸中，加入18.3份醇酸树脂和1份氧化钴/氧化锰/氧化铁/氧化锌催干剂搅拌混合均匀，加入1.4份醇醚类溶剂进行调粘至粘度合格，加入0.3份防结皮剂搅拌15min后包装，得到醇酸树脂防护涂料。(4) Paint mixing: The slurry is pumped into the paint mixing tank through a diaphragm pump or a gear pump, and 18.3 parts of alkyd resin and 1 part of cobalt oxide/manganese oxide/iron oxide/zinc oxide drier are added and stirred and mixed Evenly, add 1.4 parts of alcohol ether solvent to adjust the viscosity until the viscosity is qualified, add 0.3 part of anti-skinning agent, stir for 15 minutes, and package to obtain alkyd resin protective coating.
对照例1Comparative example 1
按照实施例1的方法制备醇酸树脂防护涂料，与实施例1的区别在于，采用传统的以脂肪酸为原料制备的醇酸树脂。The alkyd resin protective coating was prepared according to the method of Example 1. The difference from Example 1 is that the traditional alkyd resin prepared with fatty acid as a raw material is used.
测试例1Test case 1
将实施例1～4和对照例1制备的醇酸树脂防护涂料进行性能测试，测试结果如表1所示。The alkyd resin protective coatings prepared in Examples 1 to 4 and Comparative Example 1 were tested for performance, and the test results are shown in Table 1.
表1实施例1～4和对照例1制备的醇酸树脂防护涂料的性能测试结果Table 1 Performance test results of alkyd resin protective coatings prepared in Examples 1 to 4 and Comparative Example 1
Figure PCTCN2020097470-appb-000001
Figure PCTCN2020097470-appb-000001
Figure PCTCN2020097470-appb-000002
Figure PCTCN2020097470-appb-000002
Figure PCTCN2020097470-appb-000003
Figure PCTCN2020097470-appb-000003
由表1可知，本发明提供的高闪点醇酸树脂防护涂料的闪点大幅度的高于要求的指标，其余各项技术指标也均符合要求。表明，本发明提供的醇酸树脂防护涂料闪点高，在生产、运输和使用的过程中更加安全；耐酸、耐碱、耐候性等性能优异；而且毒性小，绿色环保。It can be seen from Table 1 that the flash point of the high flash point alkyd resin protective coating provided by the present invention is significantly higher than the required index, and the other technical indexes also meet the requirements. It shows that the alkyd resin protective coating provided by the present invention has a high flash point, is safer in the process of production, transportation and use; has excellent acid resistance, alkali resistance, weather resistance and other properties; and has low toxicity and is green and environmentally friendly.
以上实施例的说明只是用于帮助理解本发明的方法及其核心思想。应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以对本发明进行若干改进和修饰，这些改进和修饰也落入本发明权利要求的保护范围内。对这些实施例的多种修改对本领域的专业技术人员来说是显而易见的，本文中所定义的一般原理可以在不脱离本发明的精神或范围的情况下在其它实施例中实现。因此，本发明将不会被限制于本文所示的这些实施例，而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。The description of the above embodiments is only used to help understand the method and core idea of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention. Various modifications to these embodiments are obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown in this document, but should conform to the widest scope consistent with the principles and novel features disclosed in this document.

Claims (13)

  1. 一种高闪点醇酸树脂防护涂料，其特征在于，包括以下重量份数的组分：A high flash point alkyd resin protective coating, which is characterized in that it comprises the following components in parts by weight:
    醇酸树脂60～65份；60～65 parts of alkyd resin;
    钛白粉15～20份；15-20 parts of titanium dioxide;
    硫酸钡5～15份；5-15 parts of barium sulfate;
    醇醚类溶剂5～10份；5-10 parts of alcohol ether solvents;
    气相二氧化硅0.3～0.4份；0.3～0.4 parts of fumed silica;
    润湿剂0.2～0.4份；0.2～0.4 parts of wetting agent;
    分散剂0.3～0.5份；0.3～0.5 parts of dispersant;
    催干剂0.7～1份；0.7～1 part of drier;
    防结皮剂0.2～0.3份。0.2 to 0.3 parts of anti-skinning agent.
  2. 根据权利要求1所述的高闪点醇酸树脂防护涂料，其特征在于，所述醇酸树脂为天然植物油经高温反应制备得到；The high flash point alkyd resin protective coating according to claim 1, wherein the alkyd resin is prepared from natural vegetable oil through high-temperature reaction;
    所述高温反应的温度为180～200℃，时间为14～15h。The temperature of the high-temperature reaction is 180-200°C, and the time is 14-15h.
  3. 根据权利要求1或2所述的高闪点醇酸树脂防护涂料，其特征在于，所述醇酸树脂在25℃条件下的粘度为250～350s。The high flash point alkyd resin protective coating according to claim 1 or 2, wherein the viscosity of the alkyd resin at 25°C is 250-350s.
  4. 根据权利要求1所述的高闪点醇酸树脂防护涂料，其特征在于，所述高闪点醇酸树脂防护涂料在25℃条件下的粘度为190～210s。The high flash point alkyd resin protective coating according to claim 1, wherein the high flash point alkyd resin protective coating has a viscosity of 190-210 s at 25°C.
  5. 根据权利要求1或4所述的高闪点醇酸树脂防护涂料，其特征在于，所述钛白粉为金红石型钛白粉。The high flash point alkyd resin protective coating according to claim 1 or 4, wherein the titanium dioxide is rutile titanium dioxide.
  6. 根据权利要求1或4所述的高闪点醇酸树脂防护涂料，其特征在于，所述硫酸钡的粒径为1100～1300目。The high flash point alkyd resin protective coating according to claim 1 or 4, wherein the particle size of the barium sulfate is 1100-1300 mesh.
  7. 根据权利要求1或4所述的高闪点醇酸树脂防护涂料，其特征在于，所述醇醚类溶剂包括二乙二醇甲醚、二乙二醇乙醚、二乙二醇丁醚、二丙二醇甲醚、二丙二醇丁醚、二甘醇乙醚和三丙二醇甲醚中的一种或几种。The high flash point alkyd resin protective coating according to claim 1 or 4, wherein the alcohol ether solvent includes diethylene glycol methyl ether, diethylene glycol ethyl ether, diethylene glycol butyl ether, diethylene glycol One or more of propylene glycol methyl ether, dipropylene glycol butyl ether, diethylene glycol ethyl ether and tripropylene glycol methyl ether.
  8. 根据权利要求1或4所述的高闪点醇酸树脂防护涂料，其特征在于，所述催干剂包括金属氧化物、金属盐和稀土催干剂中的一种或几种。The high flash point alkyd resin protective coating according to claim 1 or 4, wherein the drier comprises one or more of metal oxides, metal salts and rare earth driers.
  9. 根据权利要求8所述的高闪点醇酸树脂防护涂料，其特征在于，所述金属氧化物和金属盐中的金属独立地包括钴、锰、铁、锌或钙。The high flash point alkyd resin protective coating according to claim 8, wherein the metal in the metal oxide and the metal salt independently includes cobalt, manganese, iron, zinc or calcium.
  10. 权利要求1～9任一项所述高闪点醇酸树脂防护涂料的制备方法，其特征在于，包括以下步骤：The preparation method of high flash point alkyd resin protective coating according to any one of claims 1-9, characterized in that it comprises the following steps:
    将部分醇醚类溶剂、部分醇酸树脂、润湿剂、分散剂、气相二氧化硅、钛白粉和硫酸钡进行混合后研磨，得到浆料；Part of the alcohol ether solvent, part of the alkyd resin, wetting agent, dispersant, fumed silica, titanium dioxide and barium sulfate are mixed and then ground to obtain a slurry;
    将所述浆料、剩余醇酸树脂、催干剂、剩余醇醚类溶剂和防结皮剂混合，得到醇酸树脂防护涂料。The slurry, the remaining alkyd resin, the drier, the remaining alcohol ether solvent and the anti-skinning agent are mixed to obtain the alkyd resin protective coating.
  11. 根据权利要求10所述的制备方法，其特征在于，所述部分醇醚类溶剂占醇醚类溶剂总质量的75～85％；The preparation method according to claim 10, wherein the partial alcohol ether solvent accounts for 75-85% of the total mass of the alcohol ether solvent;
    所述部分醇酸树脂占醇酸树脂总质量的65～75％；The part of the alkyd resin accounts for 65-75% of the total mass of the alkyd resin;
    所述浆料中固体颗粒的细度≤30μm。The fineness of the solid particles in the slurry is less than or equal to 30 μm.
  12. 权利要求1～9任一项所述的高闪点醇酸树脂防护涂料或权利要求10～11任一项所述制备方法制备得到的高闪点醇酸树脂防护涂料在工业防腐中的应用。Application of the high flash point alkyd resin protective coating according to any one of claims 1 to 9 or the high flash point alkyd resin protective coating prepared by the preparation method according to any one of claims 10 to 11 in industrial anticorrosion.
  13. 根据权利要求12所述的应用，其特征在于，所述应用为在钢结构防护中的应用。The application according to claim 12, wherein the application is an application in the protection of steel structures.
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