CN113004782B - Photocureable coating and preparation method and application thereof - Google Patents
Photocureable coating and preparation method and application thereof Download PDFInfo
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- CN113004782B CN113004782B CN202110247550.3A CN202110247550A CN113004782B CN 113004782 B CN113004782 B CN 113004782B CN 202110247550 A CN202110247550 A CN 202110247550A CN 113004782 B CN113004782 B CN 113004782B
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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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/14—Polyurethanes having carbon-to-carbon unsaturated bonds
-
- 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
- C09D5/18—Fireproof paints including high temperature resistant 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
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- 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
- C09D7/65—Additives macromolecular
-
- 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
- C08K2003/2217—Oxides; Hydroxides of metals of magnesium
- C08K2003/222—Magnesia, i.e. magnesium oxide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/005—Additives being defined by their particle size in general
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The invention belongs to the technical field of coatings. The invention provides a photocuring coating which comprises 50-80 parts of polyurethane acrylic resin, 20-30 parts of active monomer, 10-15 parts of photoinitiator, 20-40 parts of solvent, 5-10 parts of anti-settling agent, 5-10 parts of reinforcing agent, 5-10 parts of magnesium oxide and 10-15 parts of filler. The photocuring coating is prepared by a step-by-step mixing mode, and can effectively disperse various components and prevent agglomeration and sedimentation. The photocureable coating provided by the invention can be applied to fire prevention, the fire resistance can reach 3.4h, the bonding strength can reach 0.86Mpa, the water resistance can reach 34h, and the cold and heat cycle resistance can reach 26 times; the burning phenomenon is prevented under the roasting of the flame, thereby reducing the generation and the dissipation of harmful gas.
Description
Technical Field
The invention relates to the technical field of coatings, in particular to a photocureable coating and a preparation method and application thereof.
Background
In various buildings, paints are painted to highlight various aesthetic conditions after the building body is finished for the sake of overall beauty and coordination. Fire protection is a must be considered element of a building when initially designed. However, in recent years, there are more and more high buildings, and the time for escaping to the ground is also long when a fire occurs. It is a well-known fact that after a fire occurs, little of the fatal influence on human beings comes from the fire, and much of the fatal influence is smoke after the fire occurs, which is a main source of injury. However, the existing coating can emit more harmful gas when being roasted by open fire, and causes more harm to human bodies.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a photocureable coating and a preparation method and application thereof.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a photocureable coating which comprises the following components in parts by mass: 50-80 parts of polyurethane acrylic resin, 20-30 parts of active monomer, 10-15 parts of photoinitiator, 20-40 parts of solvent, 5-10 parts of anti-settling agent, 5-10 parts of reinforcing agent, 5-10 parts of magnesium oxide and 10-15 parts of filler.
Preferably, the reactive monomer is isobornyl acrylate, 1, 3-butanediol diacrylate, hydroxyethyl acrylate or n-butyl acrylate.
Preferably, the photoinitiator is 1-hydroxycyclohexyl benzophenone, benzoin isopropyl ether or benzophenone.
Preferably, the solvent is toluene, xylene, ethanol, ethyl acetate or n-butanone.
Preferably, the anti-settling agent is montmorillonite, bentonite or attapulgite;
the reinforcing agent is polyacrylamide, sodium polyacrylate, polyacetamide or glass fiber.
Preferably, the filler comprises silicon carbide and borax, and the mass ratio of the silicon carbide to the borax is 1: 0.3 to 0.6;
the mass ratio of the component with the particle diameter of less than or equal to 5 microns, the component with the particle diameter of more than 5 microns and less than or equal to 15 microns, the component with the particle diameter of more than 15 microns and less than or equal to 20 microns and the component with the particle diameter of more than 20 microns and less than or equal to 25 microns in the silicon carbide is 1: 2-3: 1-2: 0.4 to 0.8.
The invention also provides a preparation method of the photocureable coating, which comprises the following steps:
(1) mixing polyurethane acrylic resin, an active monomer, a solvent and an anti-settling agent to obtain a solution A;
(2) and mixing the solution A with the rest components to obtain the photocureable coating.
Preferably, the mixing temperature in the step (1) is 60-70 ℃;
the mixing is carried out in a stirring state, the rotating speed of the stirring is 6000-7000 rpm, and the stirring time is 0.5-1 h.
Preferably, the mixing temperature in the step (2) is 40-50 ℃;
the mixing is carried out in a stirring state, the stirring rotating speed is 3000-4000 rpm, and the stirring time is 4-6 h.
The invention also provides application of the photocureable coating in fire prevention.
The invention provides a photocuring coating which comprises polyurethane acrylic resin, a reactive monomer, a photoinitiator, a solvent, an anti-settling agent, a reinforcing agent, magnesium oxide and a filler. The photocuring coating is prepared by a step-by-step mixing mode, polyurethane acrylic resin, an active monomer, a solvent and an anti-settling agent are dispersed, and then the dispersed components are mixed with the rest components to prepare the photocuring coating; the preparation method provided by the invention is simple and efficient, and can effectively disperse various components and prevent agglomeration and sedimentation. The photocureable coating provided by the invention can be applied to fire prevention, and can prevent combustion phenomenon under the condition of flame broiling, thereby reducing the generation and the dissipation of harmful gas.
Detailed Description
The invention provides a photocureable coating which comprises the following components in parts by mass: 50-80 parts of polyurethane acrylic resin, 20-30 parts of active monomer, 10-15 parts of photoinitiator, 20-40 parts of solvent, 5-10 parts of anti-settling agent, 5-10 parts of reinforcing agent, 5-10 parts of magnesium oxide and 10-15 parts of filler.
In the present invention, the urethane acrylate is 50 to 80 parts, preferably 60 to 70 parts, and more preferably 63 to 67 parts.
In the invention, the active monomer is 20-30 parts, preferably 22-28 parts, and more preferably 24-26 parts.
In the present invention, the reactive monomer is preferably isobornyl acrylate, 1, 3-butanediol diacrylate, hydroxyethyl acrylate or n-butyl acrylate.
In the invention, the photoinitiator is 10-15 parts, preferably 11-14 parts, and more preferably 12-13 parts.
In the present invention, the photoinitiator is preferably 1-hydroxycyclohexyl benzophenone, benzoin isopropyl ether or benzophenone.
In the present invention, the solvent is 20 to 40 parts, preferably 24 to 36 parts, and more preferably 28 to 32 parts.
In the present invention, the solvent is preferably toluene, xylene, ethanol, ethyl acetate or n-butanone.
In the invention, the anti-settling agent is 5-10 parts, preferably 6-9 parts, and more preferably 7-8 parts.
In the invention, the reinforcing agent is 5-10 parts, preferably 6-9 parts, and more preferably 7-8 parts.
In the present invention, the anti-settling agent is preferably montmorillonite, bentonite or attapulgite.
In the present invention, the reinforcing agent is preferably polyacrylamide, sodium polyacrylate, polyacetamide or glass fiber.
In the present invention, the magnesium oxide is 5 to 10 parts, preferably 6 to 9 parts, and more preferably 7 to 8 parts.
In the present invention, the filler is 10 to 15 parts, preferably 11 to 14 parts, and more preferably 12 to 13 parts.
In the invention, the filler preferably comprises silicon carbide and borax, and the mass ratio of the silicon carbide to the borax is preferably 1: 0.3 to 0.6, and more preferably 1: 0.4 to 0.5, more preferably 1: 0.44-0.46.
In the present invention, the mass ratio of the component having a particle diameter of 5 μm or less, the component having a particle diameter of 5 μm or more and 15 μm or less, the component having a particle diameter of 15 μm or more and 20 μm or less, and the component having a particle diameter of 20 μm or more and 25 μm or less in the silicon carbide is preferably 1: 2-3: 1-2: 0.4 to 0.8, and more preferably 1: 2.2-2.8: 1.2-1.8: 0.5 to 0.7, more preferably 1: 2.4-2.6: 1.4-1.6: 0.55 to 0.65.
The invention also provides a preparation method of the photocureable coating, which comprises the following steps:
(1) mixing polyurethane acrylic resin, an active monomer, a solvent and an anti-settling agent to obtain a solution A;
(2) and mixing the solution A with the rest components to obtain the photocureable coating.
In the invention, the mixing temperature in the step (1) is preferably 60-70 ℃, more preferably 62-68 ℃, and even more preferably 64-66 ℃.
In the invention, the mixing in the step (1) is preferably carried out in a stirring state, and the rotation speed of the stirring is preferably 6000 to 7000rpm, more preferably 6200 to 6800rpm, and more preferably 6400 to 6600 rpm; the stirring time is preferably 0.5-1 h, more preferably 0.6-0.9 h, and even more preferably 0.7-0.8 h.
In the invention, the mixing temperature in the step (2) is preferably 40-50 ℃, more preferably 42-48 ℃, and even more preferably 44-46 ℃.
In the invention, the mixing in the step (2) is preferably carried out in a stirring state, and the stirring rotation speed is preferably 3000-4000 rpm, more preferably 3200-3800 rpm, and more preferably 3400-3600 rpm; the stirring time is preferably 4-6 h, more preferably 4.4-5.6 h, and even more preferably 4.8-5.2 h.
The invention also provides application of the photocureable coating in fire prevention.
The technical solutions provided by the present invention are described in detail below with reference to examples, but they should not be construed as limiting the scope of the present invention.
Example 1
65 parts of polyurethane acrylic resin, 25 parts of isobornyl acrylate, 13 parts of benzophenone, 30 parts of toluene, 8 parts of montmorillonite, 5 parts of sodium polyacrylate, 6 parts of magnesium oxide and 14 parts of filler;
the mass ratio of the silicon carbide to the borax in the filler is 1: 0.45, and the mass ratio of a component having a particle diameter of 5 μm or less, a component having a particle diameter of 15 μm or more, a component having a particle diameter of 20 μm or more and a component having a particle diameter of 25 μm or more in the silicon carbide is 1: 2.5: 1.5: 0.6.
the preparation method comprises the following steps: stirring urethane acrylate, isobornyl acrylate, toluene and montmorillonite at 65 ℃ and 6500rpm for 0.8h to obtain a solution A; and stirring the solution A, the benzophenone, the sodium polyacrylate, the magnesium oxide and the filler at 45 ℃ and 3500rpm for 5 hours to obtain the photocureable coating.
After the photocureable coating prepared in the embodiment is coated on an I-shaped steel beam of I36b standard by using an ultraviolet curing technology standard in the field, the performance of the photocureable coating prepared in the embodiment is detected according to GB14907-2002 technical conditions for fireproof coatings for steel structures, and the result is shown in Table 1.
Example 2
60 parts of polyurethane acrylic resin, 28 parts of 1, 3-butanediol diacrylate, 12 parts of 1-hydroxycyclohexyl phenyl ketone, 35 parts of xylene, 6 parts of attapulgite, 8 parts of polyacrylamide, 9 parts of magnesium oxide and 12 parts of filler;
the mass ratio of the silicon carbide to the borax in the filler is 1: 0.6, wherein the mass ratio of the component with the particle diameter of less than or equal to 5 μm, the component with the particle diameter of more than 5 μm and less than or equal to 15 μm, the component with the particle diameter of more than 15 μm and less than or equal to 20 μm and the component with the particle diameter of more than 20 μm and less than or equal to 25 μm in the silicon carbide is 1: 2: 1: 0.7.
the preparation method comprises the following steps: stirring urethane acrylate, 1, 3-butanediol diacrylate, xylene and attapulgite at 70 ℃ and 7000rpm for 0.5h to obtain a solution A; and stirring the solution A, the 1-hydroxycyclohexyl benzophenone, the polyacrylamide, the magnesium oxide and the filler for 6 hours at the temperature of 40 ℃ and the rotating speed of 3800rpm to obtain the photocuring coating.
After the photocureable coating prepared in the embodiment is coated on an I-shaped steel beam of I36b standard by using an ultraviolet curing technology standard in the field, the performance of the photocureable coating prepared in the embodiment is detected according to GB14907-2002 technical conditions for fireproof coatings for steel structures, and the result is shown in Table 1.
Example 3
80 parts of polyurethane acrylic resin, 22 parts of n-butyl acrylate, 15 parts of benzoin isopropyl ether, 25 parts of ethanol, 10 parts of bentonite, 7 parts of polyacetamide, 8 parts of magnesium oxide and 13 parts of filler;
the mass ratio of the silicon carbide to the borax in the filler is 1: 0.3, wherein the mass ratio of the component with the particle diameter of less than or equal to 5 μm, the component with the particle diameter of more than 5 μm and less than or equal to 15 μm, the component with the particle diameter of more than 15 μm and less than or equal to 20 μm and the component with the particle diameter of more than 20 μm and less than or equal to 25 μm in the silicon carbide is 1: 3: 1.8: 0.7.
the preparation method comprises the following steps: stirring urethane acrylate, n-butyl acrylate, ethanol and bentonite at the rotating speed of 6000rpm at 60 ℃ for 1h to obtain a solution A; and stirring the solution A, benzoin isopropyl ether, polyacetamide, magnesium oxide and a filler at 50 ℃ and 3300rpm for 5 hours to obtain the photocureable coating.
After the photocureable coating prepared in the embodiment is coated on an I-shaped steel beam of I36b standard by using an ultraviolet curing technology standard in the field, the performance of the photocureable coating prepared in the embodiment is detected according to GB14907-2002 technical conditions for fireproof coatings for steel structures, and the result is shown in Table 1.
TABLE 1
According to the embodiment, the light-cured coating provided by the invention has the advantages that after the light-cured coating is coated on I-shaped steel, the fire resistance can reach 3.4h, the excellent fire resistance is realized, the bonding strength can reach 0.86Mpa, the water resistance can reach 34h, and the cold and heat cycle resistance can reach 26 times; therefore, the coating provided by the invention has high fire resistance limit and no reduction of other properties, and is a photocureable coating with excellent comprehensive properties.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (5)
1. The photocureable coating is characterized by comprising the following components in parts by mass: 50-80 parts of polyurethane acrylic resin, 20-30 parts of active monomer, 10-15 parts of photoinitiator, 20-40 parts of solvent, 5-10 parts of anti-settling agent, 5-10 parts of reinforcing agent, 5-10 parts of magnesium oxide and 10-15 parts of filler;
the solvent is toluene, xylene, ethanol, ethyl acetate or n-butanone;
the filler comprises silicon carbide and borax, and the mass ratio of the silicon carbide to the borax is 1: 0.3 to 0.6;
the mass ratio of the component with the particle diameter of less than or equal to 5 microns, the component with the particle diameter of more than 5 microns and less than or equal to 15 microns, the component with the particle diameter of more than 15 microns and less than or equal to 20 microns and the component with the particle diameter of more than 20 microns and less than or equal to 25 microns in the silicon carbide is 1: 2-3: 1-2: 0.4 to 0.8;
the anti-settling agent is montmorillonite, bentonite or attapulgite;
the reinforcing agent is polyacrylamide, sodium polyacrylate, polyacetamide or glass fiber;
the preparation method of the photocureable coating comprises the following steps:
(1) mixing polyurethane acrylic resin, an active monomer, a solvent and an anti-settling agent to obtain a solution A;
(2) mixing the solution A with the rest components to obtain the photocureable coating;
the mixing temperature in the step (1) is 60-70 ℃;
the mixing is carried out under the stirring state, the stirring rotating speed is 6000-7000 rpm, and the stirring time is 0.5-1 h;
the mixing temperature in the step (2) is 40-50 ℃;
the mixing is carried out in a stirring state, the stirring rotating speed is 3000-4000 rpm, and the stirring time is 4-6 h.
2. The photocurable coating of claim 1 wherein the reactive monomer is isobornyl acrylate, 1, 3-butanediol diacrylate, hydroxyethyl acrylate or n-butyl acrylate.
3. The photocurable coating of claim 1 or 2 wherein the photoinitiator is 1-hydroxycyclohexyl benzophenone, benzoin isopropyl ether or benzophenone.
4. The method for preparing the photocurable coating according to any one of claims 1 to 3, comprising the steps of:
(1) mixing polyurethane acrylic resin, an active monomer, a solvent and an anti-settling agent to obtain a solution A;
(2) mixing the solution A with the rest components to obtain the photocureable coating;
the mixing temperature in the step (1) is 60-70 ℃;
the mixing is carried out under the stirring state, the stirring rotating speed is 6000-7000 rpm, and the stirring time is 0.5-1 h;
the mixing temperature in the step (2) is 40-50 ℃;
the mixing is carried out in a stirring state, the stirring rotating speed is 3000-4000 rpm, and the stirring time is 4-6 h.
5. Use of the photocurable coating according to any one of claims 1 to 3 for fire protection.
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| "UV 固化涂料研究进展";杨娟等;《广州化工》;20111231;第39卷(第24期);7-8+16 * |
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| CN113004782A (en) | 2021-06-22 |
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