CN113004764B - High-temperature-resistant wear-resistant coating and preparation method thereof - Google Patents
High-temperature-resistant wear-resistant coating and preparation method thereof Download PDFInfo
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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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
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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
- 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
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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
- 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
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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
- 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
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- 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
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
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- 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
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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- 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
- C08K2201/011—Nanostructured additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
Abstract
The invention belongs to the technical field of functional coatings. The invention provides a high-temperature-resistant wear-resistant coating which comprises the following components in parts by weight: 55-65 parts of organic silicon modified epoxy resin; 2-4 parts of silicon carbide; 8-15 parts of calcium carbonate; 2-4 parts of polytetrafluoroethylene; 10-20 parts of white corundum micro powder; 10-20 parts of a curing agent; 3-8 parts of a film forming agent; 2-5 parts of graphite; 2-5 parts of a dispersing agent; 50-60 parts of a solvent. The invention also provides a preparation method of the high-temperature-resistant wear-resistant coating. The paint disclosed by the invention adopts GB/T1735-2009 for a heat resistance test, and does not generate a foaming and cracking phenomenon at 650-680 ℃ for 35 hours; the friction coefficient measured by a UMT-2 type friction wear testing machine is 0.15-0.2; the wear rate measured by GB23988-2009 is 1100-1220L/mum.
Description
Technical Field
The invention relates to the technical field of functional coatings, in particular to a high-temperature-resistant wear-resistant coating and a preparation method thereof.
Background
There are three main forms of failure of mechanical parts in modern industry: abrasion, fracture and corrosion, with abrasion accounting for approximately 60%. The abrasion consumes a large amount of resources every year, the abrasion-resistant coating is the simplest and most convenient way for reducing the abrasion, and the abrasion-resistant coating is a special functional coating and has better abrasion resistance.
At present, wear-resistant coatings widely applied mainly comprise epoxy coating systems and polyurethane coating systems, but have the defects of large friction coefficient, poor high-temperature resistance, poor corrosion resistance and the like. With the increase of the service temperature along with the progress of the friction and wear process, the wear resistance of the epoxy coating system and the polyurethane coating system is obviously reduced.
Various devices in industry, such as smoke exhaust pipes, high-temperature steam pipelines, heat exchangers, petroleum cracking equipment, boilers and the like, are required to have good high-temperature resistance. Therefore, research and development of a coating capable of improving wear resistance and high temperature resistance simultaneously can help promote development of the coating and economy.
Disclosure of Invention
The invention aims to provide a high-temperature-resistant wear-resistant coating and a preparation method thereof aiming at the defects of the prior art. The paint disclosed by the invention adopts GB/T1735-2009 for a heat resistance test, and does not generate a foaming and cracking phenomenon at 650-680 ℃ for 35 hours; the friction coefficient measured by a UMT-2 type friction wear testing machine is 0.15-0.2; the wear rate measured by GB23988-2009 is 1100-1220L/mum.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a high-temperature-resistant wear-resistant coating which comprises the following components in parts by weight:
preferably, the raw materials for preparing the organosilicon modified epoxy resin comprise epoxy resin, methyltrichlorosilane and methyltriethoxysilane.
Preferably, the preparation process of the organosilicon modified epoxy resin also comprises a composite catalyst and water; the weight ratio of the epoxy resin, the methyltrichlorosilane, the methyltriethoxysilane, the composite catalyst and the water is 60-70: 10-20: 10-15: 8-12; the composite catalyst comprises triphenyl phosphine and butyl titanate with the weight ratio of 1-2: 1-2.
Preferably, the granularity of the silicon carbide is 50-200 μm; the particle size of the calcium carbonate is 200-500 nm; the granularity of the white corundum micro powder is 1-100 mu m.
Preferably, the curing agent is one or more of diethylenetriamine, p-phenylenediamine, DMP-30, polyamide and triethylene tetramine.
Preferably, the film forming agent comprises propylene glycol methyl ether acetate and dipropylene glycol butyl ether in a weight ratio of 1-2: 2-4.
Preferably, the dispersing agent comprises one or more of sodium carboxylate, sodium polyacrylate, fatty alcohol-polyoxyethylene ether and ethylene bis stearamide; the solvent is one or more of N, N-dimethylacetamide, N-dimethylformamide, N-methylpyrrolidone, ethyl acetate and carbon tetrachloride.
The invention also provides a preparation method of the high-temperature-resistant wear-resistant coating, which comprises the following steps:
1) mixing calcium carbonate, white corundum micropowder and a solvent to obtain a first mixture;
2) mixing the first mixture, silicon carbide, polytetrafluoroethylene and graphite to obtain a second mixture;
3) mixing the second mixture, the organic silicon modified epoxy resin and the dispersing agent to obtain a third mixture;
4) and mixing the third mixture, the curing agent and the film forming agent to obtain the high-temperature-resistant wear-resistant coating.
Preferably, the mixing in the step 1) is carried out at a stirring speed of 4000-5000 r/min; the mixing in the step 2) and the step 3) is carried out at a stirring speed of 2500-3500 r/min; and 4) mixing at a stirring speed of 1500-2000 r/min.
Preferably, the mixing time in the step 1) is 3-6 h; the mixing time in the step 2) is 2-4 h; the mixing time in the step 3) is 2-5 h; and 4) mixing for 3-5 h.
The beneficial effects of the invention include the following:
1) the organosilicon modified epoxy resin can reduce the internal stress of the epoxy resin, and simultaneously enhance the wear resistance, high temperature resistance and toughness of the coating; the graphite and the polytetrafluoroethylene can reduce the friction coefficient of the coating and reduce friction and wear; the micron-sized silicon carbide and the nano-sized calcium carbonate play a role of a framework, so that the hardness and the wear resistance of the coating are improved, the manufacturing cost is reduced, and the shape stability of the product is improved.
2) The coating disclosed by the invention is excellent in heat resistance and wear resistance and small in friction coefficient. GB/T1735-2009 is adopted for carrying out a heat resistance test, and the coating does not generate the phenomenon of foaming and cracking at 650-680 ℃ for 35 hours; the friction coefficient of the coating is measured to be 0.15-0.2 by adopting a UMT-2 type friction wear testing machine; the wear rate of the coating is 1100-1220L/mum measured by GB 23988-2009.
Detailed Description
The invention provides a high-temperature-resistant wear-resistant coating which comprises the following components in parts by weight:
the high-temperature-resistant wear-resistant coating comprises 55-65 parts of organic silicon modified epoxy resin, preferably 57-62 parts, and further preferably 58-60 parts.
The raw materials for preparing the organosilicon modified epoxy resin preferably comprise epoxy resin, methyltrichlorosilane and methyltriethoxysilane, and the organosilicon modified epoxy resin further preferably further comprises a composite catalyst and water in the preparation process; the weight ratio of the epoxy resin, the methyltrichlorosilane, the methyltriethoxysilane, the composite catalyst and the water is preferably 60-70: 10-20: 10-15: 8 to 12, and more preferably 62 to 68: 12-18: 11-14: 9-11; more preferably 64 to 66: 14-16: 12-13: 10; the composite catalyst preferably comprises triphenyl phosphine and butyl titanate, and the weight ratio of the triphenyl phosphine to the butyl titanate is preferably 1-2: 1-2, and more preferably 1: 1.
The preparation method of the organic silicon modified epoxy resin comprises the following steps: reacting epoxy resin, methyltriethoxysilane, a composite catalyst and water, and then reacting with methyltrichlorosilane; the reaction temperature of the epoxy resin, the methyltriethoxysilane, the composite catalyst and the water is preferably 70-90 ℃, further preferably 75-85 ℃, and the reaction time is preferably 1-3 h, further preferably 2 h; the reaction temperature with the methyltrichlorosilane is preferably 50-60 ℃, more preferably 52-58 ℃, more preferably 54-56 ℃, and the time is preferably 2-4 h, more preferably 3 h.
The organosilicon modified epoxy resin can reduce the internal stress of the epoxy resin and enhance the wear resistance, high temperature resistance and toughness of the coating.
The high-temperature-resistant wear-resistant coating comprises 2-4 parts of silicon carbide, preferably 3 parts; the particle size of the silicon carbide is preferably 50-200 μm, more preferably 80-160 μm, and even more preferably 100-130 μm.
The high-temperature-resistant wear-resistant coating comprises 8-15 parts of calcium carbonate, preferably 10-13 parts of calcium carbonate, and further preferably 11-12 parts of calcium carbonate; the particle size of the calcium carbonate is preferably 200-500 nm, more preferably 270-420 nm, and even more preferably 320-360 nm.
The micron-sized silicon carbide provides a supporting function, the nano-sized calcium carbonate provides a rolling function, and the micron-sized silicon carbide, the nano-sized calcium carbonate and other components in the coating act together to improve the wear resistance of the coating; the micron-sized silicon carbide and the nano-sized calcium carbonate play a role of a framework, so that the hardness of the coating is improved, the manufacturing cost is reduced, and the shape stability of the product is improved.
The high-temperature-resistant wear-resistant coating comprises 2-4 parts of polytetrafluoroethylene, preferably 3 parts; the polytetrafluoroethylene can obviously reduce the friction coefficient of the coating.
The high-temperature-resistant wear-resistant coating comprises 10-20 parts of white corundum micro powder, preferably 12-18 parts of white corundum micro powder, and further preferably 14-16 parts of white corundum micro powder; the particle size of the white corundum micro powder is preferably 1-100 mu m, more preferably 10-80 mu m, and even more preferably 30-60 mu m.
The white corundum micropowder of the invention can improve the compactness of the coating, endow the coating with high sintering hardness, and enhance the filling property and the fluidity of the coating.
The high-temperature-resistant wear-resistant coating comprises 10-20 parts of a curing agent, preferably 12-18 parts, and further preferably 14-16 parts; the curing agent is preferably one or more of diethylenetriamine, p-phenylenediamine, DMP-30, polyamide and triethylene tetramine; further preferably DMP-30 and polyamide in a mass ratio of 1-2: 1-2; when the curing agent is a plurality of curing agents, the components are combined in any proportion.
The curing agent disclosed by the invention is good in heat resistance, the mass loss rate and the hardness change are small at high temperature, and particularly the heat resistance is optimal when DMP-30 and polyamide are used as the curing agent.
The high-temperature-resistant wear-resistant coating comprises 3-8 parts of a film forming agent, preferably 4-7 parts, and further preferably 5-6 parts; the film forming agent preferably comprises propylene glycol methyl ether acetate and dipropylene glycol butyl ether, and the weight ratio of the propylene glycol methyl ether acetate to the dipropylene glycol butyl ether is preferably 1-2: 2-4, and more preferably 1: 2.
The high-temperature-resistant wear-resistant coating comprises 2-5 parts of graphite, preferably 3-4 parts of graphite; the graphite can enable the opposite-grinding surface contacting with the surface of the coating to slide more easily, has the effect of reducing friction and wear, and has good heat dissipation and heat conductivity.
The high-temperature-resistant wear-resistant coating comprises 2-5 parts of a dispersing agent, preferably 3-4 parts; the dispersing agent preferably comprises one or more of sodium carboxylate, sodium polyacrylate, fatty alcohol-polyoxyethylene ether and ethylene bis stearamide, and when the dispersing agent comprises a plurality of components, the components are combined in any proportion.
The high-temperature-resistant wear-resistant coating comprises 50-60 parts of solvent, preferably 52-58 parts, and further preferably 54-56 parts; the solvent is preferably one or more of N, N-dimethylacetamide, N-dimethylformamide, N-methylpyrrolidone, ethyl acetate and carbon tetrachloride.
The invention also provides a preparation method of the high-temperature-resistant wear-resistant coating, which comprises the following steps:
1) mixing calcium carbonate, white corundum micropowder and a solvent to obtain a first mixture;
2) mixing the first mixture, silicon carbide, polytetrafluoroethylene and graphite to obtain a second mixture;
3) mixing the second mixture, the organic silicon modified epoxy resin and the dispersing agent to obtain a third mixture;
4) and mixing the third mixture, the curing agent and the film forming agent to obtain the high-temperature-resistant wear-resistant coating.
The mixing in the step 1) of the invention is preferably carried out at a stirring speed of 4000-5000 r/min, more preferably 4200-4800 r/min, and even more preferably 4400-4600 r/min; the mixing in the step 2) and the step 3) is preferably carried out at a stirring speed of 2500-3500 r/min, more preferably 2700-3200 r/min, and even more preferably 2900-3100 r/min; the mixing in the step 4) is preferably carried out at a stirring speed of 1500-2000 r/min, more preferably 1600-1900 r/min, and even more preferably 1700-1800 r/min.
The mixing time in the step 1) is preferably 3-6 h, and more preferably 4-5 h; the mixing time in the step 2) is preferably 2-4 h, and more preferably 3 h; the mixing time in the step 3) is preferably 2-5 h, and more preferably 3-4 h; the mixing time in the step 4) is preferably 3-5 h, and more preferably 4 h.
The mixing according to the invention is carried out at room temperature.
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
8kg of calcium carbonate (particle size 230nm) and 10kg of white corundum micropowder (particle size 15 μm) were dissolved in 50kg of N, N-dimethylacetamide, and during the dissolution, the mixture was stirred sufficiently at a speed of 4200r/min for 5.5 hours. Adding 2kg of silicon carbide (the granularity is 80 mu m), 2kg of polytetrafluoroethylene and 2kg of graphite into the obtained uniform mixture, and fully stirring for 3.5 hours at the rotating speed of 2700 r/min; then 55kg of organic silicon modified epoxy resin and 2kg of sodium polyacrylate are added, and the mixture is fully stirred for 4.5 hours at the rotating speed of 2700 r/min. The organosilicon modified epoxy resin is prepared from the following components in a mass ratio of 62: 12:12: 12:9, wherein the epoxy resin, the methyltrichlorosilane, the methyltriethoxysilane, the composite catalyst and water react at 75 ℃ for 2.5h and then react with the methyltrichlorosilane at 52 ℃ for 3.5 h. And finally, adding 10kg of diethylenetriamine, 1kg of propylene glycol methyl ether acetate and 2kg of dipropylene glycol butyl ether, and fully stirring for 4.5 hours at the rotating speed of 1650r/min to obtain the high-temperature-resistant and wear-resistant coating.
The coating of example 1 was uniformly applied to a cleaned galvanized iron surface which had been subjected to sand blasting, and subjected to a performance test after thorough drying. GB/T1735-; the friction coefficient of the coating is measured to be 0.2 by adopting a UMT-2 type friction wear testing machine; the wear rate of the coating was measured according to GB23988-2009 to be 1100L/μm.
Example 2
15kg of calcium carbonate (particle size 450nm) and 20kg of white corundum micropowder (particle size 80 μm) were dissolved in 60kg of N-methylpyrrolidone, and during the dissolution, the mixture was stirred at a speed of 4800r/min for 3.5 hours. Adding 4kg of silicon carbide (granularity is 180 μm), 4kg of polytetrafluoroethylene and 5kg of graphite into the obtained uniform mixture, and fully stirring for 2.5h at the rotating speed of 3200 r/min; then 65kg of organic silicon modified epoxy resin and 5kg of sodium carboxylate are added, and the mixture is fully stirred for 2.5 hours at the rotating speed of 3200 r/min. The organosilicon modified epoxy resin is prepared from the following components in percentage by mass of 68: 18: 18:15:12, wherein the epoxy resin, the methyltrichlorosilane, the methyltriethoxysilane, the composite catalyst and water react at 85 ℃ for 1.5h and then react with the methyltrichlorosilane at 58 ℃ for 2.5 h. And finally, adding 20kg of p-phenylenediamine, 2kg of propylene glycol methyl ether acetate and 6kg of dipropylene glycol butyl ether, and fully stirring for 3.5 hours at the rotating speed of 1950r/min to obtain the high-temperature-resistant and wear-resistant coating.
The coating of example 2 was uniformly applied to a cleaned galvanized iron surface which had been subjected to sand blasting, and subjected to a performance test after thorough drying. GB/T1735-; the friction coefficient of the coating measured by a UMT-2 type friction wear testing machine is 0.18; the wear rate of the coating was 1180L/. mu.m as measured according to GB 23988-2009.
Example 3
12kg of calcium carbonate (particle size 350nm) and 15kg of white corundum micropowder (particle size 50 μm) were dissolved in 55kg of N, N-dimethylacetamide, and during the dissolution, the mixture was stirred sufficiently at a rotation speed of 4500r/min for 4.5 h. Adding 3kg of silicon carbide (the granularity is 120 mu m), 3kg of polytetrafluoroethylene and 4kg of graphite into the obtained uniform mixture, and fully stirring for 3h at the rotating speed of 3000 r/min; then 60kg of organic silicon modified epoxy resin and 4kg of sodium carboxylate are added, and the mixture is fully stirred for 4 hours at the rotating speed of 3000 r/min. The organic silicon modified epoxy resin is prepared from the following components in percentage by mass of 65: 15: the epoxy resin, the methyltrichlorosilane, the methyltriethoxysilane, the composite catalyst and the water are reacted at a ratio of 15:12:10, wherein the epoxy resin, the methyltriethoxysilane, the composite catalyst and the water are reacted for 2 hours at 78 ℃ and then reacted with the methyltrichlorosilane for 3 hours at 55 ℃. And finally, adding 8kg of DMP-30, 8kg of polyamide, 2kg of propylene glycol methyl ether acetate and 4kg of dipropylene glycol butyl ether, and fully stirring for 4 hours at the rotating speed of 1750r/min to obtain the high-temperature-resistant and wear-resistant coating.
The coating of example 3 was uniformly applied to a cleaned galvanized iron surface which had been subjected to sand blasting, and subjected to a performance test after thorough drying. GB/T1735-; the friction coefficient of the coating measured by a UMT-2 type friction wear testing machine is 0.15; the wear rate of the coating was measured to be 1220L/μm according to GB 23988-2009.
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 (8)
1. The high-temperature-resistant wear-resistant coating is characterized by comprising the following components in parts by weight:
the raw materials for preparing the organic silicon modified epoxy resin comprise epoxy resin, methyltrichlorosilane and methyltriethoxysilane;
the preparation process of the organic silicon modified epoxy resin also comprises a composite catalyst and water; the weight ratio of the epoxy resin, the methyltrichlorosilane, the methyltriethoxysilane, the composite catalyst and the water is 60-70: 10-20: 10-15: 8-12; the composite catalyst comprises triphenyl phosphine and butyl titanate with the weight ratio of 1-2: 1-2.
2. The high-temperature-resistant and wear-resistant coating as claimed in claim 1, wherein the particle size of the silicon carbide is 50-200 μm; the particle size of the calcium carbonate is 200-500 nm; the granularity of the white corundum micro powder is 1-100 mu m.
3. The high-temperature-resistant and wear-resistant coating as claimed in claim 2, wherein the curing agent is one or more of diethylenetriamine, p-phenylenediamine, DMP-30, polyamide and triethylene tetramine.
4. The high-temperature-resistant and wear-resistant coating as claimed in claim 3, wherein the film forming agent comprises propylene glycol methyl ether acetate and dipropylene glycol butyl ether in a weight ratio of 1-2: 2-4.
5. The high-temperature-resistant and wear-resistant coating as claimed in claim 3 or 4, wherein the dispersing agent comprises one or more of sodium carboxylate, sodium polyacrylate, fatty alcohol-polyoxyethylene ether and ethylene bis stearamide; the solvent is one or more of N, N-dimethylacetamide, N-dimethylformamide, N-methylpyrrolidone, ethyl acetate and carbon tetrachloride.
6. The preparation method of the high-temperature-resistant and wear-resistant coating as claimed in any one of claims 1 to 5, characterized by comprising the following steps:
1) mixing calcium carbonate, white corundum micropowder and a solvent to obtain a first mixture;
2) mixing the first mixture, silicon carbide, polytetrafluoroethylene and graphite to obtain a second mixture;
3) mixing the second mixture, the organic silicon modified epoxy resin and the dispersing agent to obtain a third mixture;
4) and mixing the third mixture, the curing agent and the film forming agent to obtain the high-temperature-resistant wear-resistant coating.
7. The preparation method according to claim 6, wherein the mixing in step 1) is performed at a stirring speed of 4000 to 5000 r/min; the mixing in the step 2) and the step 3) is carried out at a stirring speed of 2500-3500 r/min; and 4) mixing at a stirring speed of 1500-2000 r/min.
8. The preparation method according to claim 7, wherein the mixing time in the step 1) is 3-6 h; the mixing time in the step 2) is 2-4 h; the mixing time in the step 3) is 2-5 h; and 4) mixing for 3-5 h.
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| CN115651496A (en) * | 2022-11-11 | 2023-01-31 | 裕克施乐塑料制品（太仓）有限公司 | Anchoring type wear-resistant reinforced dip-coating liquid and use method thereof |
| CN115651486B (en) * | 2022-11-16 | 2023-08-29 | 余姚市健升运动器材有限公司 | Wear-resistant running board of running machine, production process of wear-resistant running board and running machine |
| CN115785745A (en) * | 2022-12-07 | 2023-03-14 | 惠州市千浪化工有限公司 | Waterproof coating for automobile fingerprint identification EMC material and preparation method thereof |
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