CN112760022A - Polyurethane coating and preparation process thereof - Google Patents
Polyurethane coating and preparation process thereof Download PDFInfo
- Publication number
- CN112760022A CN112760022A CN202110071810.6A CN202110071810A CN112760022A CN 112760022 A CN112760022 A CN 112760022A CN 202110071810 A CN202110071810 A CN 202110071810A CN 112760022 A CN112760022 A CN 112760022A
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- coating
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- resin
- polyurethane
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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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/36—Hydroxylated esters of higher fatty 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
- C09D5/18—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
- 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
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
-
- 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
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
- C08K2003/324—Alkali metal phosphate
Abstract
The invention discloses a polyurethane coating, which comprises A, B components, wherein the A component comprises 42 parts of castor oil modified polyurethane resin, 5 parts of acrylic resin, 5 parts of polyurea resin, 2 parts of defoaming agent, 6 parts of flatting agent, 2 parts of dispersing agent, 4 parts of coupling agent, 50 parts of calcium carbonate, 16 parts of bentonite, 8 parts of white carbon black, 6 parts of flame retardant, 6 parts of potassium tripolyphosphate and 6 parts of zinc stearate, and the B component comprises 42 parts of isocyanate resin. The invention has the advantages of high strength, good waterproof performance and strong adhesive force.
Description
Technical Field
The invention relates to the field of wall coatings, in particular to a polyurethane coating and a preparation process thereof.
Background
Most of currently used wall coatings have the problems of insufficient strength, poor waterproof performance, insufficient adhesive force and easy delamination.
Disclosure of Invention
Aiming at the problems, the invention provides a polyurethane coating and a preparation process thereof, and the polyurethane coating has the advantages of high strength, good waterproof performance and strong adhesive force.
The technical scheme adopted by the invention is as follows:
a polyurethane coating comprises A, B two components, wherein the A component comprises polyurethane resin, acrylic resin and polyurea resin, the B component comprises isocyanate resin, and the weight ratio of the polyurethane resin to the acrylic resin to the polyurea resin to the isocyanate resin is 8: 1: 1: 8.
in a further technical scheme, the component A also comprises a defoaming agent, a leveling agent, a dispersing agent and a coupling agent, wherein the defoaming agent accounts for 1-2% of the total weight of the coating, the leveling agent accounts for 3-4% of the total weight of the coating, the dispersing agent accounts for 1-2% of the total weight of the coating, and the coupling agent accounts for 2-3% of the total weight of the coating.
In a further technical scheme, the component A also comprises calcium carbonate and bentonite, wherein the calcium carbonate accounts for 25% -35% of the total weight of the coating, the bentonite accounts for 8% -10% of the total weight of the coating, the calcium carbonate is used as a main filler, the bentonite can enable the coating to be more viscous, and the condition that the coating is easy to generate precipitates after being placed for a long time is reduced.
In a further technical scheme, the component A also comprises white carbon black which accounts for 4-5% of the total weight of the coating and can improve the covering power of the coating.
In a further technical scheme, the component A also comprises a flame retardant, and the flame retardant accounts for 3-4% of the total weight of the coating and can improve the flame retardant effect of the coating.
In a further technical scheme, the component A also comprises potassium tripolyphosphate and zinc stearate, wherein the potassium tripolyphosphate accounts for 3% -4% of the total weight of the coating, the zinc stearate accounts for 3% -4% of the total weight of the coating, and the potassium tripolyphosphate and the zinc stearate can be dispersed in a net structure of the coating to enhance the fireproof performance and strength of the coating.
In a further technical scheme, the polyurethane resin is castor oil modified polyurethane resin, the castor oil is adopted to modify the polyurethane resin, unsaturated bonds in the castor oil are introduced into a molecular structure of the polyurethane resin and are crosslinked into a three-dimensional network structure, so that the strength and the painting performance of the coating are greatly improved, the compactness of the coating is improved, the hydrophobic performance is enhanced, and the waterproof effect is achieved.
The invention also provides a preparation process of the polyurethane coating, which comprises the following technical scheme:
a preparation process of a polyurethane coating comprises the following steps:
s1, adding the polyurethane resin, the acrylic resin and the polyurea resin into the organic solvent according to the proportion, and uniformly mixing to obtain a resin base material;
s2, sequentially adding calcium carbonate, white carbon black and a flame retardant into the resin base material, and stirring while adding until the mixture is uniformly mixed;
s3, sequentially adding potassium tripolyphosphate and zinc stearate into the mixture, and stirring while adding until the mixture is uniformly mixed;
s4, sequentially adding a defoaming agent, a leveling agent, a dispersing agent and a coupling agent into the mixture, and uniformly mixing;
s5, adding bentonite into the mixture, fully stirring until the mixture is uniformly mixed, adding an organic solvent, and adjusting the concentration to obtain a component A;
and S6, mixing the component A with the component B to obtain the polyurethane coating.
The invention has the beneficial effects that:
1. the invention adopts polyurethane resin, acrylic resin and polyurea resin according to the weight ratio of 8: 1: 1, the adhesion of the coating is improved by acrylic resin, and the service strength of the coating is improved by polyurea resin.
2. The bentonite is added into the coating, so that the coating is in a pseudo-thick state, and the condition that the coating is easy to generate precipitation after being placed for a long time is reduced.
3. The white carbon black is added into the coating, so that the covering power of the coating can be improved.
4. The flame retardant is added into the coating, so that the flame retardant effect of the coating can be improved.
5. The potassium tripolyphosphate and the zinc stearate are added into the coating, and can be dispersed in a net structure of the coating, so that the fireproof performance and strength of the coating are enhanced.
6. According to the invention, the castor oil is adopted to modify the polyurethane resin, unsaturated bonds in the castor oil are introduced into a molecular structure of the polyurethane resin and are crosslinked into a three-dimensional network structure, so that the strength and the brushing performance of the coating are greatly improved, the compactness of the coating is improved, the hydrophobic performance is enhanced, and the waterproof effect is achieved.
Detailed Description
The following provides a detailed description of embodiments of the invention.
Example 1:
a polyurethane coating comprises A, B two components, wherein the A component comprises 42 parts of castor oil modified polyurethane resin, 5 parts of acrylic resin, 5 parts of polyurea resin, 2 parts of defoaming agent, 6 parts of flatting agent, 2 parts of dispersing agent, 4 parts of coupling agent, 50 parts of calcium carbonate, 16 parts of bentonite, 8 parts of white carbon black, 6 parts of flame retardant, 6 parts of potassium tripolyphosphate and 6 parts of zinc stearate, and the B component comprises 42 parts of isocyanate resin.
The preparation process of the polyurethane coating comprises the following steps:
s1, adding the polyurethane resin, the acrylic resin and the polyurea resin into the organic solvent according to the proportion, and uniformly mixing to obtain a resin base material;
s2, sequentially adding calcium carbonate, white carbon black and a flame retardant into the resin base material, and stirring while adding until the mixture is uniformly mixed;
s3, sequentially adding potassium tripolyphosphate and zinc stearate into the mixture, and stirring while adding until the mixture is uniformly mixed;
s4, sequentially adding a defoaming agent, a leveling agent, a dispersing agent and a coupling agent into the mixture, and uniformly mixing;
s5, adding bentonite into the mixture, fully stirring until the mixture is uniformly mixed, adding an organic solvent, and adjusting the concentration to obtain a component A;
and S6, mixing the component A with the component B to obtain the polyurethane coating.
Example 2:
the formulation components and the preparation process of the present example are the same as those of example 1, except that in the present example, the weight parts of the components are as follows: the component A comprises 32 parts of castor oil modified polyurethane resin, 4 parts of acrylic resin, 4 parts of polyurea resin, 3 parts of defoaming agent, 6 parts of flatting agent, 3 parts of dispersing agent, 5 parts of coupling agent, 60 parts of calcium carbonate, 20 parts of bentonite, 8 parts of white carbon black, 8 parts of flame retardant, 8 parts of potassium tripolyphosphate and 8 parts of zinc stearate, and the component B comprises 32 parts of isocyanate resin.
Example 3:
the formulation components and the preparation process of the present example are the same as those of example 1, except that in the present example, the weight parts of the components are as follows: the component A comprises 40 parts of castor oil modified polyurethane resin, 5 parts of acrylic resin, 5 parts of polyurea resin, 2 parts of defoaming agent, 4 parts of flatting agent, 3 parts of dispersing agent, 3 parts of coupling agent, 55 parts of calcium carbonate, 15 parts of bentonite, 6 parts of white carbon black, 8 parts of flame retardant, 7 parts of potassium tripolyphosphate and 7 parts of zinc stearate, and the component B comprises 40 parts of isocyanate resin.
The above-mentioned embodiments only express the specific embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (8)
1. A polyurethane coating is characterized by comprising A, B two components, wherein the A component comprises polyurethane resin, acrylic resin and polyurea resin, the B component comprises isocyanate resin, and the weight ratio of the polyurethane resin to the acrylic resin to the polyurea resin to the isocyanate resin is 8: 1: 1: 8.
2. the polyurethane coating according to claim 1, wherein the component A further comprises a defoaming agent, a leveling agent, a dispersing agent and a coupling agent, wherein the defoaming agent accounts for 1-2% of the total weight of the coating, the leveling agent accounts for 3-4% of the total weight of the coating, the dispersing agent accounts for 1-2% of the total weight of the coating, and the coupling agent accounts for 2-3% of the total weight of the coating.
3. The polyurethane coating of claim 2, wherein the component a further comprises calcium carbonate and bentonite, wherein the calcium carbonate accounts for 25-35% of the total weight of the coating, and the bentonite accounts for 8-10% of the total weight of the coating.
4. The polyurethane coating of claim 3, wherein the component A further comprises white carbon black, and the white carbon black accounts for 4-5% of the total weight of the coating.
5. The polyurethane coating of claim 4, wherein the component A further comprises a flame retardant, and the flame retardant accounts for 3-4% of the total weight of the coating.
6. The polyurethane coating of claim 5, wherein the component A further comprises potassium tripolyphosphate and zinc stearate, wherein the potassium tripolyphosphate accounts for 3% -4% of the total weight of the coating, and the zinc stearate accounts for 3% -4% of the total weight of the coating.
7. A polyurethane coating according to any one of claims 1 to 6, wherein the polyurethane resin is a castor oil-modified polyurethane resin.
8. A preparation process of a polyurethane coating is characterized by comprising the following steps:
s1, adding the polyurethane resin, the acrylic resin and the polyurea resin into the organic solvent according to the proportion, and uniformly mixing to obtain a resin base material;
s2, sequentially adding calcium carbonate, white carbon black and a flame retardant into the resin base material, and stirring while adding until the mixture is uniformly mixed;
s3, sequentially adding potassium tripolyphosphate and zinc stearate into the mixture, and stirring while adding until the mixture is uniformly mixed;
s4, sequentially adding a defoaming agent, a leveling agent, a dispersing agent and a coupling agent into the mixture, and uniformly mixing;
s5, adding bentonite into the mixture, fully stirring until the mixture is uniformly mixed, adding an organic solvent, and adjusting the concentration to obtain a component A;
and S6, mixing the component A with the component B to obtain the polyurethane coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110071810.6A CN112760022A (en) | 2021-01-19 | 2021-01-19 | Polyurethane coating and preparation process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110071810.6A CN112760022A (en) | 2021-01-19 | 2021-01-19 | Polyurethane coating and preparation process thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112760022A true CN112760022A (en) | 2021-05-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110071810.6A Pending CN112760022A (en) | 2021-01-19 | 2021-01-19 | Polyurethane coating and preparation process thereof |
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| Country | Link |
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| CN (1) | CN112760022A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113800947A (en) * | 2021-11-02 | 2021-12-17 | 曹群杰 | Manufacturing process of inorganic hydrophobic insulation board |
| CN114605901A (en) * | 2022-04-19 | 2022-06-10 | 深圳市朗迈新材料科技有限公司 | Preparation method of modified polyurea polyurethane coating |
| CN115851056A (en) * | 2022-12-21 | 2023-03-28 | 江苏德威涂料有限公司 | Water-based acrylic coating and preparation method and application thereof |
Citations (5)
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|---|---|---|---|---|
| CN101899262A (en) * | 2010-08-16 | 2010-12-01 | 上海应用技术学院 | Polyurethane-urea waterproof coating and preparation method thereof |
| CN104987819A (en) * | 2015-07-09 | 2015-10-21 | 四川珍福堂商贸有限公司 | Bi-component polyurethane coating |
| CN105504206A (en) * | 2015-12-24 | 2016-04-20 | 山东一诺威新材料有限公司 | Synthetic method of castor oil based enclosed type waterborne polyurethane |
| CN105567071A (en) * | 2016-03-16 | 2016-05-11 | 张学健 | Polyurethane finish paint |
| US20180038046A1 (en) * | 2015-04-27 | 2018-02-08 | E. I. Du Pont De Nemours And Company | Waterproof membrane |
-
2021
- 2021-01-19 CN CN202110071810.6A patent/CN112760022A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101899262A (en) * | 2010-08-16 | 2010-12-01 | 上海应用技术学院 | Polyurethane-urea waterproof coating and preparation method thereof |
| US20180038046A1 (en) * | 2015-04-27 | 2018-02-08 | E. I. Du Pont De Nemours And Company | Waterproof membrane |
| CN104987819A (en) * | 2015-07-09 | 2015-10-21 | 四川珍福堂商贸有限公司 | Bi-component polyurethane coating |
| CN105504206A (en) * | 2015-12-24 | 2016-04-20 | 山东一诺威新材料有限公司 | Synthetic method of castor oil based enclosed type waterborne polyurethane |
| CN105567071A (en) * | 2016-03-16 | 2016-05-11 | 张学健 | Polyurethane finish paint |
Non-Patent Citations (2)
| Title |
|---|
| 徐家保等: "《建筑材料》", 30 June 1996, 中国建筑工业出版社 * |
| 钱建华: "《精细化学品化学》", 31 December 2010, 东北大学出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113800947A (en) * | 2021-11-02 | 2021-12-17 | 曹群杰 | Manufacturing process of inorganic hydrophobic insulation board |
| CN114605901A (en) * | 2022-04-19 | 2022-06-10 | 深圳市朗迈新材料科技有限公司 | Preparation method of modified polyurea polyurethane coating |
| CN115851056A (en) * | 2022-12-21 | 2023-03-28 | 江苏德威涂料有限公司 | Water-based acrylic coating and preparation method and application thereof |
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