CN114410206A - Hardness-enhanced coating and coating method and application thereof - Google Patents
Hardness-enhanced coating and coating method and application thereof Download PDFInfo
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- CN114410206A CN114410206A CN202210161748.4A CN202210161748A CN114410206A CN 114410206 A CN114410206 A CN 114410206A CN 202210161748 A CN202210161748 A CN 202210161748A CN 114410206 A CN114410206 A CN 114410206A
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- 238000000576 coating method Methods 0.000 title claims abstract description 63
- 239000011248 coating agent Substances 0.000 title claims abstract description 53
- 229910052751 metal Inorganic materials 0.000 claims abstract description 52
- 239000002184 metal Substances 0.000 claims abstract description 52
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 21
- 239000003960 organic solvent Substances 0.000 claims abstract description 21
- 239000002270 dispersing agent Substances 0.000 claims abstract description 16
- 239000005543 nano-size silicon particle Substances 0.000 claims abstract description 16
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000000049 pigment Substances 0.000 claims abstract description 16
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 16
- 239000001506 calcium phosphate Substances 0.000 claims abstract description 11
- 229910000389 calcium phosphate Inorganic materials 0.000 claims abstract description 11
- 235000011010 calcium phosphates Nutrition 0.000 claims abstract description 11
- 239000003822 epoxy resin Substances 0.000 claims abstract description 11
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 11
- 229920001225 polyester resin Polymers 0.000 claims abstract description 11
- 239000004645 polyester resin Substances 0.000 claims abstract description 11
- 229920005749 polyurethane resin Polymers 0.000 claims abstract description 11
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 claims abstract description 11
- 239000003973 paint Substances 0.000 claims description 39
- 238000002791 soaking Methods 0.000 claims description 25
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical group CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 14
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 10
- 238000005507 spraying Methods 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 6
- ZIZJPRKHEXCVLL-UHFFFAOYSA-N 1,3-bis(6-isocyanatohexyl)-1,3-diazetidine-2,4-dione Chemical compound O=C=NCCCCCCN1C(=O)N(CCCCCCN=C=O)C1=O ZIZJPRKHEXCVLL-UHFFFAOYSA-N 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 239000002121 nanofiber Substances 0.000 claims description 5
- 238000005498 polishing Methods 0.000 claims description 5
- 239000011527 polyurethane coating Substances 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 238000009210 therapy by ultrasound Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 4
- 235000019441 ethanol Nutrition 0.000 claims description 3
- SZVJSHCCFOBDDC-UHFFFAOYSA-N ferrosoferric oxide Chemical compound O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 claims description 3
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 claims description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical group [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 241001330498 Corsia Species 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- WTFXARWRTYJXII-UHFFFAOYSA-N iron(2+);iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[Fe+2].[Fe+3].[Fe+3] WTFXARWRTYJXII-UHFFFAOYSA-N 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
- B05D5/08—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
-
- 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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
-
- 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
- C08K2003/2237—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
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
- C08K2003/325—Calcium, strontium or barium phosphate
Abstract
The invention provides a hardness-enhanced coating, which comprises 20-28 parts of polyurethane resin according to the mass part ratio; 18-22 parts of polyester resin; 20-25 parts of epoxy resin; 5-8 parts of a dispersing agent; 6-8 parts of a curing agent; 0.5-2 parts of nano titanium dioxide; 0.5-3 parts of nano silicon dioxide; 1-3 parts of calcium phosphate; 0.8-1.5 parts of pigment; 18-25 parts of organic solvent, and also discloses a coating method of the hardness-enhanced coating and application of the hardness-enhanced coating to metal tools.
Description
Technical Field
The invention belongs to the technical field of coatings, and particularly relates to a hardness-enhanced coating and a coating method and application thereof.
Background
The metal tool which is not sprayed with the coating is extremely easy to corrode and damage when in use, and the using effect is influenced, so that a producer always coats the coating on the surface of the metal tool, on one hand, the anti-rust effect is achieved, on the other hand, the cleanliness is improved, and the use experience of a user is greatly improved.
The existing coating aims to solve the problems of rust prevention and corrosion prevention, few researches are carried out on strength, metal tools are inevitably subjected to collision friction with other objects in the using process, and the coating without certain strength is extremely easy to dent, deform and even fall off in the collision friction. Therefore, it is required to develop a coating material having good strength.
Disclosure of Invention
In order to solve the technical problems, the invention provides a hardness-enhanced coating and a coating method and application thereof.
The invention adopts the following technical scheme:
a hardness-enhanced coating comprises, by mass,
20-28 parts of polyurethane resin;
18-22 parts of polyester resin;
20-25 parts of epoxy resin;
5-8 parts of a dispersing agent;
6-8 parts of a curing agent;
0.5-2 parts of nano titanium dioxide;
0.5-3 parts of nano silicon dioxide;
1-3 parts of calcium phosphate;
0.8-1.5 parts of pigment;
18-25 parts of an organic solvent.
Further, the nano titanium dioxide and/or nano silicon dioxide are nano fiber tubular structures with the length of 300-400 nm.
Further, the dispersant is Hydropalat3275, Hydropalat3204 or Hydropalat 5040.
Further, the curing agent is a polyurethane coating curing agent of desmodur n3400, kakkenkow.
Further, the pigment is red iron oxide or black iron oxide.
Further, the organic solvent is ethanol, isopropanol or cyclohexane.
A method of applying a hardness-enhancing coating, the steps comprising:
s1, polishing a metal to be coated to enable the roughness of the surface of the metal to be coated to be 35-40 mu m;
s2, soaking the polished metal to be coated in acetone for 20-40min, then soaking in absolute ethyl alcohol for 20-40min, then soaking in water for 30-60min, wherein ultrasonic treatment is carried out while soaking in water, and after all soaking is finished, the metal to be coated is taken out and dried at 80-120 ℃;
s3, 20-28 parts of polyurethane resin; 18-22 parts of polyester resin; 20-25 parts of epoxy resin; 5-8 parts of a dispersing agent; 6-8 parts of a curing agent; 0.5-2 parts of nano titanium dioxide; 0.5-3 parts of nano silicon dioxide; 1-3 parts of calcium phosphate; 0.8-1.5 parts of pigment; adding 18-25 parts of organic solvent into a container, and continuously stirring for 30-90min until the organic solvent is uniformly mixed;
s4, coating the paint obtained in the step S3 on the surface of the metal to be coated in a spraying mode, enabling the thickness of the paint to be 50-60 mu m to serve as a first layer of paint, coating a second layer of paint in the same mode after waiting for 5-20 minutes, enabling the thickness of the second layer of paint to be 30-50 mu m, and coating a third layer of paint in the same mode after waiting for 15-20 minutes, and enabling the thickness of the third layer of paint to be 10-25 mu m;
s5, drying the metal coated with the coating at 40-60 ℃.
Further, the pressure at the time of spraying in step S4 is 0.50MPa to 0.8 MPa.
Use of a hardness-enhancing coating in a metal tool.
The invention has the beneficial effects that: the test result of the coating provided by the invention shows that the tensile strength of the base material is more than 1650MPa, the elongation of the base material is more than 9.3%, and the yield strength of the base material is more than 1350MPa, so that when the coating is coated on a metal tool for use, the strength of the metal tool can be effectively improved, the coating is convenient for a user to use, and a good anti-corrosion effect can be achieved.
Detailed Description
The present invention is further described with reference to the following examples, which are provided for illustration only and are not to be construed as limiting the scope of the claims, and other alternatives which may occur to those skilled in the art are also within the scope of the claims.
Example 1
The hardness-enhanced coating comprises 20 parts by weight of polyurethane resin; 18 parts of polyester resin; 20 parts of epoxy resin; 5 parts of a dispersing agent; 6 parts of a curing agent; 0.5 part of nano titanium dioxide; 0.5 part of nano silicon dioxide; 1 part of calcium phosphate; 0.8 part of pigment; 18 parts of organic solvent.
Specifically, the nano titanium dioxide and the nano silicon dioxide are nano fiber tubular structures with the length of 300-400 nm.
Specifically, the dispersant is Hydropalat 3275.
Specifically, the curing agent is a polyurethane coating curing agent from Desmodur N3400, Corsia.
In particular, the pigment is red iron oxide.
Specifically, the organic solvent is ethanol.
The coating method of the hardness-enhanced coating comprises the following steps:
s1, polishing a metal to be coated to enable the roughness of the surface of the metal to be coated to be 35-40 mu m;
s2, soaking the polished metal to be coated in acetone for 20min, then soaking the polished metal to be coated in absolute ethyl alcohol for 20min, then soaking the polished metal to be coated in water for 30min, wherein ultrasonic treatment is carried out while soaking in water, and after all soaking is finished, the metal to be coated is taken out and dried at the temperature of 80 ℃;
s3, 20 parts of polyurethane resin; 18 parts of polyester resin; 20 parts of epoxy resin; 5 parts of a dispersing agent; 6 parts of a curing agent; 0.5 part of nano titanium dioxide; 0.5 part of nano silicon dioxide; 1 part of calcium phosphate; 0.8 part of pigment; adding 18 parts of organic solvent into the container, and continuously stirring for 30min until the organic solvent is uniformly mixed;
s4, coating the paint obtained in the step S3 on the surface of the metal to be coated in a spraying mode, enabling the thickness of the paint to be 50 microns to serve as a first layer of paint, coating a second layer of paint in the same mode after waiting for 5 minutes, enabling the thickness of the second layer of paint to be 30 microns, and coating a third layer of paint in the same mode after waiting for 15 minutes, enabling the thickness of the third layer of paint to be 10 microns;
s5, drying the metal coated with the paint at 40 ℃.
Specifically, the pressure at the time of spraying in step S4 was 0.5 MPa.
The hardness-enhancing coating is coated on the surface of a metal tool, so that the wear resistance and the mechanical strength of the metal tool can be improved.
Example 2
The hardness-enhanced coating comprises 25 parts by weight of polyurethane resin; 20 parts of polyester resin; 22 parts of epoxy resin; 6 parts of a dispersing agent; 7 parts of a curing agent; 1 part of nano titanium dioxide; 2 parts of nano silicon dioxide; 2 parts of calcium phosphate; 1 part of pigment; 20 parts of organic solvent.
Specifically, the nano titanium dioxide and the nano silicon dioxide are nano fiber tubular structures with the length of 300-400 nm.
Specifically, the dispersant is Hydropalat 3204.
Specifically, the curing agent is a polyurethane coating curing agent from Desmodur N3400, Corsia.
Specifically, the pigment is black iron oxide.
Specifically, the organic solvent is isopropanol.
The coating method of the hardness-enhanced coating comprises the following steps:
s1, polishing a metal to be coated to enable the roughness of the surface of the metal to be coated to be 35-40 mu m;
s2, soaking the polished metal to be coated in acetone for 30min, then soaking the polished metal to be coated in absolute ethyl alcohol for 30min, then soaking the polished metal to be coated in water for 45min, wherein ultrasonic treatment is carried out while soaking in water, and the metal to be coated is taken out after all soaking is finished and is dried at the temperature of 100 ℃;
s3, 26 parts of polyurethane resin; 20 parts of polyester resin; 22 parts of epoxy resin; 6 parts of a dispersing agent; 7 parts of a curing agent; 1 part of nano titanium dioxide; 2 parts of nano silicon dioxide; 2 parts of calcium phosphate; 1 part of pigment; adding 20 parts of organic solvent into the container, and continuously stirring for 60min until the organic solvent is uniformly mixed;
s4, coating the paint obtained in the step S3 on the surface of the metal to be coated in a spraying mode, enabling the thickness of the paint to be 55 microns to serve as a first layer of paint, coating a second layer of paint in the same mode after waiting for 10 minutes, enabling the thickness of the second layer of paint to be 40 microns, and coating a third layer of paint in the same mode after waiting for 18 minutes, enabling the thickness of the third layer of paint to be 20 microns;
s5, drying the metal coated with the paint at50 ℃.
Specifically, the pressure at the time of spraying in step S4 was 0.6 MPa.
The hardness-enhancing coating is coated on the surface of a metal tool, so that the wear resistance and the mechanical strength of the metal tool can be improved.
Example 3
A hardness-enhanced coating comprises 28 parts of polyurethane resin; 22 parts of polyester resin; 25 parts of epoxy resin; 8 parts of a dispersing agent; 8 parts of a curing agent; 2 parts of nano titanium dioxide; 3 parts of nano silicon dioxide; 3 parts of calcium phosphate; 1.5 parts of pigment; 25 parts of organic solvent.
Specifically, the nano titanium dioxide and the nano silicon dioxide are nano fiber tubular structures with the length of 300-400 nm.
Specifically, the dispersant is Hydropalat3275, Hydropalat3204 or Hydropalat 5040.
Specifically, the curing agent is a polyurethane coating curing agent from Desmodur N3400, Corsia.
In particular, the pigment is red iron oxide.
Specifically, the organic solvent is cyclohexane.
The coating method of the hardness-enhanced coating comprises the following steps:
s1, polishing a metal to be coated to enable the roughness of the surface of the metal to be coated to be 40 microns;
s2, soaking the polished metal to be coated in acetone for 40min, then soaking the polished metal to be coated in absolute ethyl alcohol for 40min, then soaking the polished metal to be coated in water for 60min, wherein ultrasonic treatment is carried out while soaking the polished metal in water, and the metal to be coated is taken out after all soaking is finished and is dried at the temperature of 120 ℃;
s3, 28 parts of polyurethane resin; 22 parts of polyester resin; 25 parts of epoxy resin; 8 parts of a dispersing agent; 8 parts of a curing agent; 2 parts of nano titanium dioxide; 3 parts of nano silicon dioxide; 3 parts of calcium phosphate; 1.5 parts of pigment; adding 25 parts of organic solvent into the container, and continuously stirring for 90min until the organic solvent is uniformly mixed;
s4, coating the paint obtained in the step S3 on the surface of the metal to be coated in a spraying mode, enabling the thickness of the paint to be 60 microns to serve as a first layer of paint, coating a second layer of paint in the same mode after waiting for 20 minutes, enabling the thickness of the second layer of paint to be 50 microns, and coating a third layer of paint in the same mode after waiting for 20 minutes, enabling the thickness of the third layer of paint to be 25 microns;
s5, drying the metal coated with the paint at 60 ℃.
Specifically, the pressure at the time of spraying in step S4 was 0.8 MPa.
The hardness-enhancing coating is coated on the surface of a metal tool, so that the wear resistance and the mechanical strength of the metal tool can be improved.
The coatings prepared in examples 1-3 were tested for their properties and the results are shown in the following table:
| detecting items | Tensile strength of substrate (MPa) | Elongation percentage of substrate (%) | Base material yield strength (MPa) |
| Example 1 | 1650 | 9.3 | 1350 |
| Example 2 | 1690 | 9.8 | 1380 |
| Example 3 | 1680 | 9.5 | 1380 |
The test result of the table shows that the coating provided by the invention has good tensile strength and yield strength, and can play a good role in enhancing the hardness when being applied to metal tools.
It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (9)
1. A hardness-enhancing coating characterized by: the components are mixed according to the mass portion and comprise,
20-28 parts of polyurethane resin;
18-22 parts of polyester resin;
20-25 parts of epoxy resin;
5-8 parts of a dispersing agent;
6-8 parts of a curing agent;
0.5-2 parts of nano titanium dioxide;
0.5-3 parts of nano silicon dioxide;
1-3 parts of calcium phosphate;
0.8-1.5 parts of pigment;
18-25 parts of an organic solvent.
2. The hardness-enhancing coating according to claim 1, characterized in that: the nano titanium dioxide and/or nano silicon dioxide are nano fiber tubular structures with the length of 300-400 nm.
3. The hardness-enhancing coating according to claim 1, characterized in that: the dispersant is Hydropalat3275, Hydropalat3204 or Hydropalat 5040.
4. The hardness-enhancing coating according to claim 1, characterized in that: the curing agent is a polyurethane coating curing agent of Desmodur N3400, scientific and scientific.
5. The hardness-enhancing coating according to claim 1, characterized in that: the pigment is iron oxide red or iron oxide black.
6. The hardness-enhancing coating according to claim 1, characterized in that: the organic solvent is ethanol, isopropanol or cyclohexane.
7. A method of applying the hardness-enhancing paint according to claim 1, wherein: the method comprises the following steps:
s1, polishing a metal to be coated to enable the roughness of the surface of the metal to be coated to be 35-40 mu m;
s2, soaking the polished metal to be coated in acetone for 20-40min, then soaking in absolute ethyl alcohol for 20-40min, then soaking in water for 30-60min, wherein ultrasonic treatment is carried out while soaking in water, and after all soaking is finished, the metal to be coated is taken out and dried at 80-120 ℃;
s3, 20-28 parts of polyurethane resin; 18-22 parts of polyester resin; 20-25 parts of epoxy resin; 5-8 parts of a dispersing agent; 6-8 parts of a curing agent; 0.5-2 parts of nano titanium dioxide; 0.5-3 parts of nano silicon dioxide; 1-3 parts of calcium phosphate; 0.8-1.5 parts of pigment; adding 18-25 parts of organic solvent into a container, and continuously stirring for 30-90min until the organic solvent is uniformly mixed;
s4, coating the paint obtained in the step S3 on the surface of the metal to be coated in a spraying mode, enabling the thickness of the paint to be 50-60 mu m to serve as a first layer of paint, coating a second layer of paint in the same mode after waiting for 5-20 minutes, enabling the thickness of the second layer of paint to be 30-50 mu m, and coating a third layer of paint in the same mode after waiting for 15-20 minutes, and enabling the thickness of the third layer of paint to be 10-25 mu m;
s5, drying the metal coated with the coating at 40-60 ℃.
8. The hardness-enhancing coating according to claim 7, characterized in that: and the pressure when spraying is carried out in the step S4 is 0.50 MPa-0.8 MPa.
9. Use of the hardness-enhancing coating according to claim 1 in a metal tool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210161748.4A CN114410206A (en) | 2022-02-22 | 2022-02-22 | Hardness-enhanced coating and coating method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202210161748.4A CN114410206A (en) | 2022-02-22 | 2022-02-22 | Hardness-enhanced coating and coating method and application thereof |
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| CN114410206A true CN114410206A (en) | 2022-04-29 |
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| CN202210161748.4A Pending CN114410206A (en) | 2022-02-22 | 2022-02-22 | Hardness-enhanced coating and coating method and application thereof |
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