CN113292906A - Preparation and application of high-hardness wear-resistant coating - Google Patents
Preparation and application of high-hardness wear-resistant coating Download PDFInfo
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- CN113292906A CN113292906A CN202110635821.2A CN202110635821A CN113292906A CN 113292906 A CN113292906 A CN 113292906A CN 202110635821 A CN202110635821 A CN 202110635821A CN 113292906 A CN113292906 A CN 113292906A
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- epoxy resin
- resin
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- hardness
- resistant coating
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- 238000000576 coating method Methods 0.000 title claims abstract description 58
- 239000011248 coating agent Substances 0.000 title claims abstract description 57
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 239000003822 epoxy resin Substances 0.000 claims abstract description 40
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 40
- 229920005989 resin Polymers 0.000 claims abstract description 32
- 239000011347 resin Substances 0.000 claims abstract description 32
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 30
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 18
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 17
- 239000010703 silicon Substances 0.000 claims abstract description 17
- 238000005507 spraying Methods 0.000 claims abstract description 17
- 239000002904 solvent Substances 0.000 claims abstract description 16
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000005543 nano-size silicon particle Substances 0.000 claims abstract description 12
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 10
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 9
- 239000010959 steel Substances 0.000 claims abstract description 9
- 210000002268 wool Anatomy 0.000 claims abstract description 9
- 238000004898 kneading Methods 0.000 claims abstract description 6
- 230000008569 process Effects 0.000 claims abstract description 6
- 239000012808 vapor phase Substances 0.000 claims abstract description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000002131 composite material Substances 0.000 claims abstract description 3
- 230000000694 effects Effects 0.000 claims abstract 2
- 239000012046 mixed solvent Substances 0.000 claims abstract 2
- 239000003292 glue Substances 0.000 claims description 14
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 10
- 229920000642 polymer Polymers 0.000 claims description 10
- 239000004843 novolac epoxy resin Substances 0.000 claims description 7
- 239000012071 phase Substances 0.000 claims description 7
- 239000000377 silicon dioxide Substances 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 238000013329 compounding Methods 0.000 claims description 4
- 239000004844 aliphatic epoxy resin Substances 0.000 claims description 2
- YCIVSJFIXXVSRH-UHFFFAOYSA-N amino-methyl-phenylsilicon Chemical compound C[Si](N)C1=CC=CC=C1 YCIVSJFIXXVSRH-UHFFFAOYSA-N 0.000 claims description 2
- 239000004841 bisphenol A epoxy resin Substances 0.000 claims description 2
- 239000003365 glass fiber Substances 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 230000005693 optoelectronics Effects 0.000 claims description 2
- 150000003071 polychlorinated biphenyls Chemical class 0.000 claims description 2
- 239000002994 raw material Substances 0.000 claims description 2
- 238000007790 scraping Methods 0.000 claims description 2
- 229920002545 silicone oil Polymers 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 239000000853 adhesive Substances 0.000 claims 1
- 230000001070 adhesive effect Effects 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 claims 1
- VLLLUYCVYLFOFZ-UHFFFAOYSA-N oxo(phenyl)silicon Chemical compound O=[Si]C1=CC=CC=C1 VLLLUYCVYLFOFZ-UHFFFAOYSA-N 0.000 claims 1
- 239000005022 packaging material Substances 0.000 claims 1
- 238000003786 synthesis reaction Methods 0.000 claims 1
- 230000002194 synthesizing effect Effects 0.000 claims 1
- 239000011521 glass Substances 0.000 abstract description 7
- 239000000203 mixture Substances 0.000 abstract description 7
- 239000000758 substrate Substances 0.000 abstract description 2
- 239000004593 Epoxy Substances 0.000 description 13
- 229920013822 aminosilicone Polymers 0.000 description 10
- -1 phenyl methyl amino Chemical group 0.000 description 10
- 239000008096 xylene Substances 0.000 description 10
- 239000006185 dispersion Substances 0.000 description 8
- 239000002313 adhesive film Substances 0.000 description 7
- 229910052593 corundum Inorganic materials 0.000 description 7
- 239000001257 hydrogen Substances 0.000 description 7
- 229910052739 hydrogen Inorganic materials 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 239000003960 organic solvent Substances 0.000 description 7
- 229910001845 yogo sapphire Inorganic materials 0.000 description 7
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 6
- 125000001931 aliphatic group Chemical group 0.000 description 6
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 6
- 238000002156 mixing Methods 0.000 description 6
- 239000000843 powder Substances 0.000 description 6
- 238000003756 stirring Methods 0.000 description 6
- 238000005299 abrasion Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- ARXJGSRGQADJSQ-UHFFFAOYSA-N 1-methoxypropan-2-ol Chemical compound COCC(C)O ARXJGSRGQADJSQ-UHFFFAOYSA-N 0.000 description 4
- 229910052681 coesite Inorganic materials 0.000 description 4
- 229910052906 cristobalite Inorganic materials 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 229910052682 stishovite Inorganic materials 0.000 description 4
- 229910052905 tridymite Inorganic materials 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- XUIMIQQOPSSXEZ-IGMARMGPSA-N silicon-28 atom Chemical group [28Si] XUIMIQQOPSSXEZ-IGMARMGPSA-N 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 239000006087 Silane Coupling Agent Substances 0.000 description 2
- 238000005054 agglomeration Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 125000003700 epoxy group Chemical group 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 235000014443 Pyrus communis Nutrition 0.000 description 1
- 238000005411 Van der Waals force Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000011164 primary particle Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920001187 thermosetting polymer Polymers 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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
-
- 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
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
- C08G59/50—Amines
- C08G59/504—Amines containing an atom other than nitrogen belonging to the amine group, carbon and hydrogen
-
- 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
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
- C09D183/08—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen, and oxygen
-
- 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
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Paints Or Removers (AREA)
Abstract
The invention discloses a preparation method and application of a high-hardness wear-resistant coating, wherein the coating comprises two components: the component A is synthesized by kneading epoxy resin, nanoscale vapor-phase aluminum oxide and nano silicon dioxide by a three-roller machine and then adding a solvent for dissolving, and the component B is synthesized by dissolving organic silicon resin and the solvent; the selected solvent is one or two mixed solvents of dimethylbenzene, absolute ethyl alcohol and PM; the mass ratio of the gas-phase-method aluminum oxide to the total amount of the resin is respectively 8-15: 4-8: 100. A. b is mixed and stirred uniformly according to the activity ratio and is suitable for a spraying process, the mixture is sprayed on a glass substrate, the surface is dried for 1-2H at 70 ℃, and the mixture is cured for 2-4H at 150 ℃, so that the hardness of the formed organic-inorganic composite coating pencil can reach more than 5H, and the wear resistance of 1Kg of loaded steel wool is more than 1 ten thousand times.
Description
Technical Field
The invention particularly relates to preparation and application of a high-hardness wear-resistant coating.
Background
The polymer and the composite material thereof have the advantages of low friction coefficient, small density, strong plasticity, high specific strength, easy processing and the like, and are widely applied to the fields of chemical industry, machinery, medicine, aviation and the like. However, molecular chains of most polymer materials are connected by van der waals force and hydrogen bonds, the relative acting force is weak, and relative motion is easily generated under the action of external force, so that the molecular chains are slipped and broken, and the defects of cracks, pear furrows, pits and the like appear on the surfaces of the materials. Improving the hardness and wear resistance of organic polymer coatings has become a key point in the research in the field of material science.
Researches show that the organosilicon can effectively improve the wear resistance of the coating, wherein the researches of organosilicon modified epoxy resin as a wear-resistant hardened coating are increasing, such as Ningfei, preparation of a siloxane polymer wear-resistant transparent coating and performance researches thereof [ D ]. Zhejiang: zhejiang university, 2015: 1-99, the silane coupling agent is studied on the bisphenol A acrylic resin modification, and the result shows that the maximum pencil hardness of the coating can reach 6H when the content of the silane coupling agent is 10-20%, and the scratch resistance and the wear resistance of the base material are improved. The organosilicon modified epoxy resin can reduce the internal stress of the epoxy resin and improve the toughness and heat resistance of the epoxy resin, and the defects of the epoxy resin in the aspects are overcome due to the advantages of excellent thermal stability, oxidation resistance, weather resistance, low surface energy, high dielectric strength and the like of the organosilicon resin.
In addition, the addition of inorganic nano material is also an effective method for reducing abrasion, and the corrosion resistance, the conductivity, the self-cleaning property and the like of the material are increased while the hardness and the abrasion resistance are improved, such as SiO with a hardening function2The nano particles are added into organic resin to obtain a coating with better wear resistance, namely SiO2surface-OH capable of bondingThe polymer coating and the molecular network chain structure unit of the polymer coating are integrated into a whole, so that the coating forms an organic-inorganic hybrid network structure, and the hardness and the wear resistance of the coating are improved. The nano-alumina as the hardening and wear-resisting material has been studied in a great deal, such as Tangge, Wang Sha Jia, Ma Quanyou, etc2O3Study on powder-improved abrasion resistance of epoxy resin [ J ] thermosetting resin, 2002,17(1):4-8, found Al2O3The smaller the powder granularity is, the more obvious the wear-resisting property of the coating is improved, and the gamma-Al with the granularity of 30-60nm and the mass fraction of 10 percent is added2O3The coating of alumina has the best wear resistance.
Based on the organic silicon-epoxy resin and nano SiO2、Al2O3The invention adopts self-made phenyl methyl amino silicone resin (the preparation method can be referred to the published invention patent number CN202010139970.5) and epoxy resin as base materials and nano SiO grade SiO2Nano-scale vapor phase Al2O3Powder is used as filler, epoxy group and curing agent are in-NH in phenyl methyl amino silicone resin molecule in the curing process2or-NH-reacting to generate a three-dimensional network structure, and reacting the nano SiO2、Al2O3The powder is fixed to form a high-hardness wear-resistant coating, so that the problem of high-concentration nano SiO is solved2、Al2O3The powder is easy to agglomerate in glue, and can form a frosted coating by matching with a spraying process, the surface of the coating is fine, and the particles are uniformly distributed without agglomeration.
Disclosure of Invention
The present invention aims to overcome the above-mentioned shortcomings and provide a technical solution to solve the above-mentioned problems.
The coating is formed by compounding epoxy resin, organic silicon resin, vapor-phase-method aluminum oxide and nano silicon dioxide, the pencil hardness can reach more than 5H, and the wear resistance times of 1Kg steel wool loaded with a load are more than 1 ten thousand.
Preferably, the epoxy resin is one or more of bisphenol A epoxy resin, novolac epoxy resin, aliphatic epoxy resin, epoxy silicone oil and other liquid or solid epoxy resin; the organic silicon resin in the raw materials is self-made phenyl methyl amino silicon resin which can be used as a functional curing agent of epoxy resin and is subjected to cross-linking curing reaction with the epoxy resin to generate the high-hardness wear-resistant coating. The gas-phase method aluminum oxide and the nano silicon dioxide are both in nano level, can be filled in the organic silicon-epoxy resin polymer coating more efficiently, and have the functions of hardening and scraping resistance.
Preferably, after the A, B components are uniformly mixed and constructed, in order to fully cure the resin, the surface is dried for 1-2h at the temperature of 70 ℃ and cured for 2-4h at the temperature of 120 ℃ and 150 ℃, and a wear-resistant coating with strong bonding force and high hardness can be formed.
Preferably, the mass ratio of the vapor-phase aluminum oxide to the total amount of the resin is respectively 8-15: 4-8: 100. wherein, the primary particle size of the vapor phase method aluminum oxide is less than 20 nanometers, the hardness of the coating can be greatly improved, and the nano silicon dioxide has large specific surface area (usually more than 150 m)2Per g), the surface-OH can be bonded to the molecular network chain structural units of the polymer coating, and is integrated with the polymer coating network chain, so that the coating forms an organic-inorganic hybrid network structure.
Preferably, the preparation method is simple, the component A is prepared by uniformly kneading epoxy resin, vapor-phase aluminum oxide and nano-silicon dioxide by a three-roller machine and then adding an organic solvent for uniform dispersion, and the component B is prepared by adding organic solvent into organic silicon resin for uniform dissolution and dispersion.
Preferably, the prepared glue is suitable for a spraying process, a transparent coating with no edge shrinkage and uniform thickness can be formed by spraying through a piezoelectric valve, and a uniform frosted matte wear-resistant coating can be formed by spraying through an atomization valve.
Preferably, the high polymer coating formed by compounding the organic silicon and the epoxy resin has the characteristics of both the organic silicon and the epoxy resin, has high transparency, high adhesion, high toughness and hardness, excellent flame retardance, heat resistance and weather resistance, and can be used for surface hardening protection of optoelectronic products such as LED display screens, PCBs, metal elements, glass fiber boards, high-end circuit boards and the like.
Compared with the prior art, the invention hasThe beneficial effects are that: adopts self-made phenyl methyl amino silicone resin and epoxy resin as substrates and nano-scale gas phase Al2O3nano-SiO 22The powder is filled in epoxy group and curing agent phenyl methyl amino silicone resin molecule-NH2Or a high-hardness wear-resistant coating is formed in a body-shaped net structure generated by the-NH-reaction, so that the problem of high-concentration nano SiO is solved2、Al2O3The powder is easy to agglomerate in glue, and can form a frosted coating by matching with a spraying process, the surface of the coating is fine, and the particles are uniformly distributed without agglomeration. Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Preparing a component A: 85 parts of south Asia 128 epoxy resin, 50 parts of aliphatic group 186 epoxy resin, 10 parts of phenyl methyl epoxy silicon resin (the epoxy value is 0.35mol/100G) and 20 parts of south Asia 704 novolac epoxy resin are mixed, heated and melted, 215 parts of mixed organic solvent is added, the proportion of the organic solvent is that anhydrous ethanol, dimethylbenzene and propylene glycol methyl ether is 150:500:350, and the mixture is uniformly stirred by a dispersion machine.
Preparing a component B: 102 parts of phenyl methyl amino silicone resin (the active hydrogen value is 1.02mol/100G) and 278 parts of xylene solvent are mixed and stirred uniformly.
The component A and the component B are mixed and stirred uniformly according to the weight ratio of 1:1, a piezoelectric valve spraying device is used for construction on the surface of glass, parameters such as air pressure, stroke, flow and the like are controlled, a specific area can be sprayed, a transparent adhesive film with smooth surface and uniform thickness is formed, the surface is dried for 1-2H at 70 ℃, the coating can be completely cured after being baked for 2-4H at 150 ℃, the hardness of the coating is 5H according to GBT6739-2006 standard test, and the 1Kg steel wool of the adhesive film with load of 60um-80um is wear-resistant for 1000 times.
Example 2
Preparing a component A: 20 parts of south Asia 128 epoxy resin, 85 parts of aliphatic 186 epoxy resin, 5 parts of phenyl methyl epoxy silicon resin (the epoxy value is 0.35mol/100G) and 25 parts of south Asia 704 novolac epoxy resin are mixed, heated and melted, 245 parts of mixed organic solvent is added, the proportion of the organic solvent is that anhydrous ethanol, dimethylbenzene and propylene glycol methyl ether is 150:500:350, and the mixture is uniformly stirred by a dispersion machine.
Preparing a component B: 102 parts of phenyl methyl amino silicone resin (the active hydrogen value is 1.02mol/100G) and 278 parts of xylene solvent are mixed and stirred uniformly.
The component A and the component B are mixed and stirred uniformly according to the weight ratio of 1:1, a piezoelectric valve spraying device is used for construction on the surface of glass, parameters such as air pressure, stroke, flow and the like are controlled, a specific area can be sprayed, a transparent adhesive film with smooth surface and uniform thickness is formed, the surface is dried for 1-2H at 70 ℃, the coating can be completely cured after being baked for 2-4H at 150 ℃, the hardness of the coating is tested to be 5-6H according to the GBT6739-2006 standard, and the 1Kg steel wool abrasion-resistant adhesive film with load of 60um-80um is tested for 1500 times.
Example 3
Preparing a component A: 85 parts of south Asia 128 epoxy resin, 50 parts of aliphatic group 186 epoxy resin, 10 parts of phenyl methyl epoxy silicon resin (the epoxy value is 0.35mol/100G) and 20 parts of south Asia 704 phenolic epoxy resin are mixed, heated and melted, then 14 parts of nano silicon dioxide and 28 parts of gas phase method aluminum oxide are added, the mixture is stirred and mixed evenly, the mixture is kneaded evenly by a three-roller machine, 333 parts of xylene solvent is added, and the mixture is stirred for 20 to 30 minutes by a dispersion machine.
Preparing a component B: 102 parts of phenyl methyl amino silicone resin (the active hydrogen value is 1.02mol/100G) and 78 parts of xylene solvent are mixed and stirred uniformly.
The component A and the component B are mixed and stirred uniformly according to the weight ratio of 3:1, a piezoelectric valve spraying device is used for construction on the surface of glass, parameters such as air pressure, stroke, flow and the like are controlled, a specific area can be sprayed, a glue film with smooth surface and uniform thickness is formed, the surface is dried for 1-2H at 70 ℃, baking is carried out for 2-4H at 150 ℃, the glue film is completely cured, the hardness of the coating is tested to be 6H according to GBT6739-2006 standard, and the wear resistance of 1Kg steel wool under the load of the glue film of 60-80 um is more than 10000 times.
Example 4
Preparing a component A: mixing and heating 20 parts of south Asia 128 epoxy resin, 85 parts of aliphatic group 186 epoxy resin, 5 parts of phenyl methyl epoxy silicon resin (the epoxy value is 0.35mol/100G) and 25 parts of south Asia 704 novolac epoxy resin for melting, then adding 14 parts of nano silicon dioxide and 28 parts of gas phase method aluminum oxide, stirring and mixing uniformly, kneading uniformly by using a three-roller machine, adding 363 parts of xylene solvent, and stirring for 20-30 minutes by using a dispersion machine.
Preparing a component B: 102 parts of phenyl methyl amino silicone resin (the active hydrogen value is 1.02mol/100G) and 78 parts of xylene solvent are mixed and stirred uniformly.
The component A and the component B are mixed and stirred uniformly according to the weight ratio of 3:1, a piezoelectric valve spraying device is used for being constructed on the surface of glass, parameters such as air pressure, stroke, flow and the like are controlled, a specific area can be sprayed, a glue film with smooth surface and uniform thickness is formed, the surface is dried for 1-2H at 70 ℃, baking is carried out for 2-4H at 150 ℃, the glue film is completely cured, the hardness of the coating is tested to be 6H according to the GBT6739-2006 standard, and the wear resistance of 1Kg steel wool under the load of the glue film of 60-80 um is more than 12000 times.
Example 5
Preparing a component A: mixing and heating 20 parts of south Asia 128 epoxy resin, 85 parts of aliphatic group 186 epoxy resin, 5 parts of phenyl methyl epoxy silicon resin (the epoxy value is 0.35mol/100G) and 25 parts of south Asia 704 novolac epoxy resin for melting, then adding 17 parts of nano silicon dioxide and 34 parts of gas phase method aluminum oxide, stirring and mixing uniformly, kneading uniformly by using a three-roller machine, adding 354 parts of xylene solvent, and stirring for 20-30 minutes by using a dispersion machine.
Preparing a component B: 102 parts of phenyl methyl amino silicone resin (the active hydrogen value is 1.02mol/100G) and 78 parts of xylene solvent are mixed and stirred uniformly.
The component A and the component B are mixed and stirred uniformly according to the weight ratio of 3:1, a piezoelectric valve spraying device is used for construction on the surface of glass, parameters such as air pressure, stroke, flow and the like are controlled, a specific area can be sprayed, a glue film with smooth surface and uniform thickness is formed, the surface is dried for 1-2H at 70 ℃, the glue film can be completely cured after being baked for 2-4H at 150 ℃, the hardness of the coating is more than 6H according to GB T6739-2006 standard test, and the wear resistance of 1Kg steel wool under the load of the glue film of 60-80 um is more than 15000 times.
Example 6
Preparing a component A: mixing and heating 20 parts of south Asia 128 epoxy resin, 85 parts of aliphatic group 186 epoxy resin, 5 parts of phenyl methyl epoxy silicon resin (the epoxy value is 0.35mol/100G) and 25 parts of south Asia 704 novolac epoxy resin for melting, then adding 14 parts of nano silicon dioxide and 28 parts of gas phase method aluminum oxide, stirring and mixing uniformly, kneading uniformly by using a three-roller machine, adding 423 parts of xylene solvent, and stirring for 20-30 minutes by using a dispersion machine.
Preparing a component B: 102 parts of phenyl methyl amino silicone resin (active hydrogen value is 1.02mol/100G) and 1698 parts of mixed organic solvent (absolute ethyl alcohol: xylene: 100) are mixed and stirred uniformly.
The component A and the component B are mixed and stirred uniformly according to the weight ratio of 1:3, a spraying valve spraying device is used for construction on the surface of glass, parameters such as air pressure, stroke, flow and the like are controlled, a specific area can be sprayed, a uniform frosted matte surface and a uniform-thickness adhesive film are formed, the adhesive film can be completely cured after being dried at 70 ℃ for 1-2 hours and baked at 120 ℃ for 2-4 hours, the hardness of the coating is 6H according to the GB T6739 + 2006 standard, and the 1Kg steel wool of the adhesive film bearing load of 60um-80um is resistant to abrasion for more than 10000 times.
Additional test data for the resulting hard-and wear-resistant coating materials of examples 3-6 are shown in Table one:
watch 1
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (7)
1. The preparation and application of a novel high-hardness wear-resistant coating are characterized in that: the coating is formed by compounding epoxy resin, organic silicon resin, vapor-phase-method aluminum oxide and nano silicon dioxide, the pencil hardness can reach more than 5H, and the wear-resisting times of 1Kg steel wool loaded with load are more than 1 ten thousand times.
2. The preparation of a new high-hardness wear-resistant coating according to claim 1, characterized in that: the epoxy resin is one or more of liquid or solid epoxy resin such as bisphenol A epoxy resin, novolac epoxy resin, aliphatic epoxy resin and phenyl epoxy silicone oil; the organic silicon resin in the raw materials is self-made phenyl methyl amino silicon resin which can be used as an epoxy resin functional curing agent; the gas-phase method aluminum oxide and the nano silicon dioxide are both in nano level, can be filled in the organic silicon-epoxy resin polymer coating more efficiently, and have the functions of hardening and scraping resistance.
3. The preparation of a new high-hardness wear-resistant coating according to claim 1, characterized in that: A. b is suitable for a spraying process after being mixed and stirred uniformly according to the activity ratio, the surface is dried for 1-2h at 70 ℃, and the curing is carried out for 2-4h at the temperature of 120 ℃ and 150 ℃, so that the formed organic-inorganic composite coating has the characteristics of strong adhesive force and high-hardness wear-resistant coating.
4. The preparation method of the novel high-hardness wear-resistant coating according to claim 1, wherein the mass ratio of the fumed alumina to the total amount of the nano silica to the total amount of the resin is respectively 8-15: 4-8: 100.
5. the preparation of a new high-hardness wear-resistant coating according to claim 1, characterized in that: the preparation method is simple, the component A is prepared by kneading epoxy resin, nanoscale vapor-phase aluminum oxide and nano-silicon dioxide by a three-roller machine and then adding a solvent for dissolving synthesis, and the component B is prepared by dissolving and synthesizing organic silicon resin and the solvent; the selected solvent is one or a mixed solvent of two of dimethylbenzene, absolute ethyl alcohol and PM.
6. The preparation and application of a high-hardness wear-resistant coating according to claim 1, characterized in that: the prepared glue is suitable for a spraying process, the viscosity of the glue is controlled by the content of a solvent, a transparent coating with non-shrinkage edge and uniform thickness can be formed by spraying through a piezoelectric valve, and a uniform frosted coating can be formed by spraying through an atomizing valve.
7. The preparation and application of a high-hardness wear-resistant coating according to claim 1, characterized in that: the high molecular polymer coating formed by compounding the organic silicon and the epoxy resin has the characteristics of the organic silicon and the epoxy resin, has high transparency, high adhesion, high toughness and hardness, excellent flame retardance, heat resistance and weather resistance, and can be used for surface hardening protection of optoelectronic products such as LED display screens, PCBs, metal elements, glass fiber boards, high-end circuit boards and the like.
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