CN114539856A - Non-stick coating and preparation method and application thereof - Google Patents
Non-stick coating and preparation method and application thereof Download PDFInfo
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- CN114539856A CN114539856A CN202011364766.XA CN202011364766A CN114539856A CN 114539856 A CN114539856 A CN 114539856A CN 202011364766 A CN202011364766 A CN 202011364766A CN 114539856 A CN114539856 A CN 114539856A
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- 238000000576 coating method Methods 0.000 title claims abstract description 140
- 239000011248 coating agent Substances 0.000 title claims abstract description 136
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- -1 polytetrafluoroethylene Polymers 0.000 claims abstract description 65
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 45
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 45
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 40
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims abstract description 33
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 31
- 239000007822 coupling agent Substances 0.000 claims abstract description 15
- 239000004734 Polyphenylene sulfide Substances 0.000 claims abstract description 11
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910000423 chromium oxide Inorganic materials 0.000 claims abstract description 11
- 229920000069 polyphenylene sulfide Polymers 0.000 claims abstract description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 43
- 238000002156 mixing Methods 0.000 claims description 22
- 239000000377 silicon dioxide Substances 0.000 claims description 21
- 239000002245 particle Substances 0.000 claims description 19
- VYFYYTLLBUKUHU-UHFFFAOYSA-N Dopamine Natural products NCCC1=CC=C(O)C(O)=C1 VYFYYTLLBUKUHU-UHFFFAOYSA-N 0.000 claims description 16
- 235000012239 silicon dioxide Nutrition 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 14
- 238000003756 stirring Methods 0.000 claims description 14
- 239000002518 antifoaming agent Substances 0.000 claims description 13
- 239000003795 chemical substances by application Substances 0.000 claims description 13
- 229960003638 dopamine Drugs 0.000 claims description 13
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 11
- 239000006185 dispersion Substances 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 10
- 239000012752 auxiliary agent Substances 0.000 claims description 6
- RBNPOMFGQQGHHO-UHFFFAOYSA-N glyceric acid Chemical compound OCC(O)C(O)=O RBNPOMFGQQGHHO-UHFFFAOYSA-N 0.000 claims description 6
- 229920002503 polyoxyethylene-polyoxypropylene Polymers 0.000 claims description 6
- 238000005245 sintering Methods 0.000 claims description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 3
- 150000001412 amines Chemical class 0.000 claims description 3
- 229920001451 polypropylene glycol Polymers 0.000 claims description 3
- ZFFMLCVRJBZUDZ-UHFFFAOYSA-N 2,3-dimethylbutane Chemical group CC(C)C(C)C ZFFMLCVRJBZUDZ-UHFFFAOYSA-N 0.000 claims description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical group [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-L adipate(2-) Chemical compound [O-]C(=O)CCCCC([O-])=O WNLRTRBMVRJNCN-UHFFFAOYSA-L 0.000 claims description 2
- 239000000155 melt Substances 0.000 claims description 2
- 229920002545 silicone oil Polymers 0.000 claims description 2
- 230000003749 cleanliness Effects 0.000 abstract description 5
- 230000000052 comparative effect Effects 0.000 description 14
- 239000003973 paint Substances 0.000 description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 238000012360 testing method Methods 0.000 description 10
- 230000004580 weight loss Effects 0.000 description 8
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 5
- 239000000654 additive Substances 0.000 description 5
- 230000000996 additive effect Effects 0.000 description 5
- 239000011148 porous material Substances 0.000 description 5
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 4
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 4
- 238000000227 grinding Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- 241000894006 Bacteria Species 0.000 description 3
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 229910052731 fluorine Inorganic materials 0.000 description 3
- 239000011737 fluorine Substances 0.000 description 3
- 229920002313 fluoropolymer Polymers 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 239000006087 Silane Coupling Agent Substances 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000049 pigment Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 2
- 229910010271 silicon carbide Inorganic materials 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- CMPGARWFYBADJI-UHFFFAOYSA-L tungstic acid Chemical compound O[W](O)(=O)=O CMPGARWFYBADJI-UHFFFAOYSA-L 0.000 description 2
- 239000011787 zinc oxide Substances 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- 229910052582 BN Inorganic materials 0.000 description 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- 102100021202 Desmocollin-1 Human genes 0.000 description 1
- 101000968043 Homo sapiens Desmocollin-1 Proteins 0.000 description 1
- 101000880960 Homo sapiens Desmocollin-3 Proteins 0.000 description 1
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 235000019441 ethanol Nutrition 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229940127554 medical product Drugs 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- MHWRYTCHHJGQFQ-UHFFFAOYSA-N prop-2-enoic acid hydrate Chemical compound O.OC(=O)C=C MHWRYTCHHJGQFQ-UHFFFAOYSA-N 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 239000002341 toxic gas Substances 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
- C09D127/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers
- C09D127/02—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
- C09D127/12—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C09D127/18—Homopolymers or copolymers of tetrafluoroethene
-
- 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
- B05D5/083—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 involving the use of fluoropolymers
-
- 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
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1687—Use of special additives
-
- 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
- C09D5/38—Paints containing free metal not provided for above in groups C09D5/00 - C09D5/36
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
-
- 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
- C09D7/66—Additives characterised by particle size
- C09D7/67—Particle size smaller than 100 nm
-
- 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
- C08K2003/2251—Oxides; Hydroxides of metals of chromium
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
-
- 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
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Nanotechnology (AREA)
- Paints Or Removers (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention provides a non-stick coating and a preparation method and application thereof, wherein the non-stick coating comprises the following components in parts by weight: 50-80 parts of polytetrafluoroethylene, 40-60 parts of polyphenylene sulfide, 7-8 parts of silica sol, 10-15 parts of chromium oxide, 1-5 parts of graphene and 8-12 parts of coupling agent. By adding the silica sol and the graphene into the polytetrafluoroethylene and controlling the proportion of the silica sol and the graphene, the non-stick coating prepared by the non-stick coating has good wear resistance and thermal stability, the service life of the non-stick coating is ensured, and the non-stick coating has excellent non-stick property and glossiness, can be cleaned, effectively improves the cleanliness of the non-stick coating, and can be applied to medical instruments.
Description
Technical Field
The invention belongs to the technical field of coatings, and particularly relates to a non-stick coating as well as a preparation method and application thereof.
Background
The non-stick coating is a special coating, the surface of which is not easy to adhere by other sticky substances and is easy to remove. The coating has the characteristics of extremely low surface energy, small friction coefficient, easy sliding and the like, thereby showing good non-adhesion. The paint is generally applied to the kitchen and bathroom industry and comprises two kinds of non-stick paint of organosilicon and non-stick paint of fluorine. The organosilicon non-stick coating has the characteristics of substrate wettability, high hardness, thermal hardness, solvent resistance and lower curing temperature, but the organosilicon coating contains a volatile solvent and has poor wear resistance. In addition, the water-based fluorine coating has the advantages of no or little solvent, environmental protection, little pollution and high safety, most importantly, the continuous non-stick property has the overwhelming advantage, and most of the water-based fluorine coating is water-based polytetrafluoroethylene coating which is used for contacting with food.
CN101717601A discloses a water-based non-stick paint finish paint, which is composed of the following raw materials in percentage by weight: 50-71% of fluorocarbon polymer, 1.5-5% of surfactant, 2-6% of solvent, 0.2-0.6% of thickening agent and 0.5-5% of pigment and filler, wherein the finish paint of the water-based non-stick paint prepared by the method is little influenced by the performance fluctuation of the fluorocarbon polymer, particularly the finish paint of the water-based non-stick paint which uses the following fluorocarbon polymer, can also obtain good paint storage stability and spraying application performance, and improves the chemical resistance and durability of a coating, the spraying thickness of the coating and the film forming compactness of the coating. CN101245209A discloses a water-based fluororesin non-stick coating, which is composed of 40-70 parts of modified polytetrafluoroethylene water-based resin, 10-30 parts of high-temperature-resistant pigment, 1-5 parts of fluororesin additive, 1-5 parts of surfactant and 20-40 parts of wear-resistant filler. The polytetrafluoroethylene PTFE water-based resin is modified by the synthesized acrylic acid water-based resin, in the modification process, an acrylate secondary polymerization method is adopted, a perfluorooctanoate compound which is harmful to a human body is not used, the modified resin forms an embedded and interpenetrating network structure, a good temperature dispersion area is provided, the problems of adhesion with a substrate and baking cracking are solved, and the hardness of the non-stick coating is improved. However, the coatings obtained by the two formulations have the problems of low coating hardness, easy abrasion in use, easy decomposition of PTFE at high temperature to generate toxic gas and the like, and the polytetrafluoroethylene has high crystallinity and hardly flows after melting, so that a large number of gaps or holes are remained, and the coating is easy to crack.
In order to solve the problems of low hardness and easy abrasion of the existing non-stick pan coating produced by taking polytetrafluoroethylene as a substrate, CN105368186A discloses a high-strength non-stick pan coating for a frying pan, which is prepared by mixing polytetrafluoroethylene, silica sol, alumina sol, zirconia sol, titania sol and an additive, wherein the additive is prepared from tungstic acid, silicic acid, zinc oxide, titanium oxide and silicon carbide. According to the invention, polytetrafluoroethylene is used as a matrix, and silica sol, alumina sol, zirconia sol and titania sol are used as auxiliary agents, so that an additive can be perfectly combined with the matrix, and a high-hardness coating is formed; the additive is prepared from tungstic acid, silicic acid, zinc oxide, boron nitride, titanium nitride and silicon carbide, so that the hardness and strength of the coating are improved, and the high temperature resistance of the coating is improved. However, the method still cannot improve the problem that because the crystallinity of the polytetrafluoroethylene is very high and the polytetrafluoroethylene hardly flows after being melted, a plurality of gaps or holes are remained, and the excessive placement of the gaps or holes is easy to store dirt and breed bacteria, so that the cleanliness of the whole coating is influenced, and the application of the polytetrafluoroethylene in the fields such as medical products and the like with high requirements on sanitary conditions is limited.
Therefore, it is necessary to develop a non-stick coating with good fluidity and further obtain a non-stick coating with excellent high temperature resistance, wear resistance and non-stick property.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a non-stick coating and a preparation method and application thereof. Silicon dioxide sol is added into polytetrafluoroethylene, and the silicon dioxide sol can fill gaps and holes of the polytetrafluoroethylene, so that the non-stick coating can form a flat coating and further has excellent non-stick property; meanwhile, the graphene is added into the polytetrafluoroethylene, so that the high temperature resistance and the wear resistance of the non-stick coating are improved, the problems of cracking, falling, pits and the like of a coating in the using process of the non-stick coating are prevented, the service life of the non-stick coating is prolonged, and the non-stick coating has important research significance.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the invention provides a non-stick coating, which comprises the following components in parts by weight: 50-80 parts of polytetrafluoroethylene, 40-60 parts of polyphenylene sulfide, 7-8 parts of silica sol, 10-15 parts of chromium oxide, 1-5 parts of graphene and 8-12 parts of coupling agent.
The polytetrafluoroethylene may be 53 parts by weight, 56 parts by weight, 59 parts by weight, 62 parts by weight, 65 parts by weight, 68 parts by weight, 71 parts by weight, 74 parts by weight, 77 parts by weight, or the like.
The polyphenylene sulfide may be 42 parts by weight, 44 parts by weight, 46 parts by weight, 48 parts by weight, 50 parts by weight, 52 parts by weight, 54 parts by weight, 56 parts by weight, 58 parts by weight, or the like.
The silica sol may be 7.1 parts by weight, 7.2 parts by weight, 7.3 parts by weight, 7.4 parts by weight, 7.5 parts by weight, 7.6 parts by weight, or the like.
The chromium oxide may be 10.5 parts by weight, 11 parts by weight, 11.5 parts by weight, 12 parts by weight, 12.5 parts by weight, 13 parts by weight, 13.5 parts by weight, 14 parts by weight, 14.5 parts by weight, or the like.
The graphene may be 1.5 parts by weight, 2 parts by weight, 2.5 parts by weight, 3 parts by weight, 3.5 parts by weight, 4 parts by weight, 4.5 parts by weight, or the like.
The coupling agent may be 8.5 parts by weight, 9 parts by weight, 9.5 parts by weight, 10 parts by weight, 10.5 parts by weight, 11 parts by weight, 11.5 parts by weight, or the like.
The polytetrafluoroethylene coating has high crystallinity and hardly flows after being melted, so that more gaps or holes can be remained, the polytetrafluoroethylene shrinks in the process of forming the coating by baking, sintering and drying, the relaxation effect of the polytetrafluoroethylene along with the temperature change is not synchronous, local unbalanced shrinkage is generated on the surface, stress concentration is generated, cracks are easy to appear during stretching, and the holes or holes formed by the cracks are easy to store dirt and contain scale and breed bacteria, so that the cleanliness of the whole coating is influenced.
According to the invention, the silicon dioxide sol is added into the polytetrafluoroethylene, so that the wear resistance of the non-stick coating can be improved, the silicon dioxide particles in the silicon dioxide sol can be inlaid on the polytetrafluoroethylene particles, the silicon dioxide particle beams bind the molecular chain motion of the polytetrafluoroethylene during film formation, the internal stress among large particles is eliminated, the large-area damage of the polytetrafluoroethylene is prevented, the defects in the coating during coating formation are reduced, the coating has better non-stick property and glossiness, and the cleanliness of the coating can be improved.
The non-stick coating provided by the invention also comprises graphene which has good wear resistance and glossiness and is a two-dimensional sheet structure, and one-dimensional and two-dimensional staggered structures are formed inside polytetrafluoroethylene by matching one-dimensional silica particles in silica sol, so that the defect of a polytetrafluoroethylene coating is further overcome, and the glossiness and the non-stick property can be further improved; and the graphene has very high-temperature performance, so that the high-temperature stability and the wear resistance of the non-stick coating prepared from the non-stick coating can be improved.
According to the invention, the ratio of the silica sol to the graphene is controlled to obtain the non-stick coating with excellent non-stick property and wear resistance, if the addition amount of silica is too low, the pores of the obtained non-stick coating are still too much, and the wear resistance and the non-stick property are reduced; if the silica is added in an amount too high, the gloss of the non-stick coating is reduced.
Preferably, the melt viscosity of the polytetrafluoroethylene is 50-1 x 105Pas, e.g. 100 pas, 500 pas, 1X 103Pa·s、5×103Pa·s、7×103Pa·s、9×103Pa·s、1×104Pa·s、3×104Pa·s、5×104Pa·s、7×104Pa.s or 9X 104Pa · s, and the specific values between the aforementioned values, are limited by space and for the sake of brevity and are not intended to be an exhaustive list of the specific values included in the stated ranges.
Preferably, the silica sol has a silica content of 40-60% by mass, for example, 42%, 44%, 46%, 48%, 50%, 52%, 54%, 56% or 58%, and the specific values therebetween are limited by space and for brevity, and the invention is not intended to be exhaustive of the specific values included in the ranges.
Preferably, the silica has a particle size of less than 30nm, such as 28nm, 26nm, 24nm, 22nm, 20nm, 18nm, 16nm, 14nm, 12nm, 10nm, 8nm, 6nm, 4nm or 2nm, and the specific values therebetween are not exhaustive for the invention and are not intended to limit the scope to the specific values included in the range for brevity and conciseness.
As a preferable technical scheme of the invention, the particle size of the silicon dioxide in the silicon dioxide sol is less than 30nm, so that the non-stick coating prepared by the non-stick coating has more excellent non-stick performance and higher glossiness, and the silicon dioxide with the particle size of less than 30nm is easier to fill in the gaps of the non-stick coating, thereby reducing the pores and cavities of the coating and improving the non-stick property and glossiness of the coating.
Preferably, the graphene is dopamine modified graphene.
As a preferred technical scheme of the invention, the used graphene is dopamine modified graphene which has high surface energy, and is easy to agglomerate and difficult to disperse when added into polytetrafluoroethylene, and the surface of the dopamine modified graphene has a plurality of phenolic hydroxyl groups, so that the surface energy is effectively reduced, and the compatibility of the dopamine modified graphene and the polytetrafluoroethylene is improved.
Preferably, the dopamine modified graphene is prepared by the following method, and the method comprises the following steps: adding dopamine and graphene into deionized water according to a mass ratio of 1 (2) - (5) (such as 1:2, 1:2.3, 1:2.6, 1:2.9, 1:3.1, 1:3.5, 1:3.8, 1:4.2, 1:4.6 or 1: 4.9) and mixing for 20-400 min (such as 40min, 60min, 80min, 100min, 150min, 200min, 250min, 300min or 350 min) at 25-60 ℃ (such as 28 ℃, 32 ℃, 36 ℃, 39 ℃, 42 ℃, 46 ℃, 49 ℃, 52 ℃, 55 ℃ or 59 ℃ and the like) to obtain the dopamine-modified graphene.
Preferably, the coupling agent is a titanate coupling agent.
Preferably, the non-stick coating also comprises any one or the combination of at least two of bronze powder, an antifoaming agent, a leveling agent or a film forming aid.
Preferably, the content of the bronze powder in the non-stick coating is 5 to 12 parts by weight, such as 6 parts by weight, 7 parts by weight, 8 parts by weight, 9 parts by weight, 10 parts by weight or 11 parts by weight.
Preferably, the amount of defoaming agent in the non-stick coating is 4 to 7 parts by weight, such as 4.2 parts by weight, 4.4 parts by weight, 4.6 parts by weight, 4.8 parts by weight, 5 parts by weight, 5.2 parts by weight, 5.6 parts by weight, 5.8 parts by weight, 6 parts by weight, 6.2 parts by weight, 6.4 parts by weight, or 6.8 parts by weight, and the like.
Preferably, the antifoaming agent includes any one of polyoxyethylene polyoxypropylene pentaerythritol ether, polyoxyethylene polyoxypropylene amine ether, polyoxypropylene glycerol ether or polyoxypropylene polyoxyethylene glycerol ether or a combination of at least two thereof.
Preferably, the non-stick coating contains 6 to 7 parts by weight of leveling agent, such as 6.1 parts by weight, 6.2 parts by weight, 6.3 parts by weight, 6.4 parts by weight, 6.5 parts by weight, 6.6 parts by weight, 6.7 parts by weight, 6.8 parts by weight, or 6.9 parts by weight.
Preferably, the leveling agent includes a water-soluble silicone oil.
Preferably, the non-stick coating contains 3 to 6 parts by weight of a coalescent, such as 3.2 parts by weight, 3.4 parts by weight, 3.6 parts by weight, 3.8 parts by weight, 4 parts by weight, 4.2 parts by weight, 4.4 parts by weight, 4.6 parts by weight, 4.8 parts by weight, 5 parts by weight, 5.2 parts by weight, 5.4 parts by weight, 5.6 parts by weight, or 5.8 parts by weight, and the like.
Preferably, the coalescent comprises any one or a combination of at least two of diisopropyl alcohol adipate and/or lauryl alcohol ester.
As a preferred technical scheme of the invention, the non-stick coating comprises the following components in parts by weight: 60-70 parts of polytetrafluoroethylene, 45-55 parts of polyphenylene sulfide, 7-8 parts of silica sol, 10-13 parts of chromium oxide, 1-5 parts of dopamine modified graphene, 8-10 parts of coupling agent, 5-10 parts of bronze powder, 5-6 parts of defoaming agent, 6-7 parts of flatting agent and 4-5 parts of film-forming assistant.
In a second aspect, the present invention provides a method of making the non-stick coating of the first aspect, the method comprising the steps of:
(1) mixing polytetrafluoroethylene, polyphenylene sulfide, graphene, chromium oxide and optionally bronze powder to obtain a dispersion liquid;
(2) and (2) mixing the dispersion liquid obtained in the step (1), silica sol, a coupling agent, an optional leveling agent, an optional defoaming agent and an optional film-forming auxiliary agent to obtain the non-stick coating.
Preferably, the mixing time in step (1) is 5-8 h, such as 5.2h, 5.4h, 5.6h, 5.8h, 6h, 6.2h, 6.4h, 6.8h, 7h, 7.2h, 7.4h, 7.6h or 7.8h, and the specific values therebetween are limited by space and for the sake of brevity, the invention is not exhaustive of the specific values included in the range.
Preferably, the temperature of the mixing in the step (1) is 300-400 ℃, for example, 310 ℃, 320 ℃, 330 ℃, 340 ℃, 350 ℃, 360 ℃, 370 ℃, 380 ℃ or 390 ℃, and the specific values therebetween are limited by space and for the sake of brevity, and the invention is not intended to be exhaustive of the specific values included in the range.
Preferably, the mixing in step (1) is carried out under stirring conditions, more preferably at a rotation speed of 900-1500 r/min (e.g. 1000r/min, 1100r/min, 1200r/min, 1300r/min or 1400 r/min).
Preferably, the mixing time in step (2) is 1 to 4 hours, such as 1.2 hours, 1.4 hours, 1.8 hours, 2 hours, 2.2 hours, 2.6 hours, 2.8 hours, 3 hours, 3.2 hours, 3.4 hours, 3.6 hours or 3.8 hours, and the specific values therebetween are limited by space and for brevity, the invention is not exhaustive.
Preferably, the mixing in step (2) is carried out under stirring, more preferably under stirring at a stirring speed of 500 to 1000r/min (e.g., 600r/min, 700r/min, 800r/min, 900r/min, 950r/min, etc.).
As a preferred technical scheme, the preparation method comprises the following steps:
(1) mixing polytetrafluoroethylene, graphene, polyphenylene sulfide, chromium oxide and optionally bronze powder for 5-8 hours at the temperature of 300-400 ℃ under the stirring condition of the rotating speed of 900-1500 r/min to obtain a dispersion liquid;
(2) and (2) mixing the dispersion liquid obtained in the step (1), the silica sol, the coupling agent, the optional leveling agent, the optional defoaming agent and the optional film-forming auxiliary agent for 1-4 hours under the stirring condition that the rotating speed is 500-1000 r/min to obtain the non-stick coating.
In a third aspect, the invention provides a non-stick coating, which is prepared by sintering the non-stick coating of the first aspect at a high temperature.
In a fourth aspect, the present invention provides a use of the non-stick coating of the third aspect in a medical device.
Preferably, the application comprises an application in a medical tray.
Compared with the prior art, the invention has the following beneficial effects:
according to the non-stick coating provided by the invention, the silicon dioxide sol in a specific part is added into the polytetrafluoroethylene, and the silicon dioxide in the silicon dioxide sol can fill the pores and the cavities in the non-stick coating formed by the non-stick coating, so that on one hand, the wear resistance of the non-stick coating prepared by the non-stick coating is favorably improved, on the other hand, the probability of the excessive pores or the holes for storing dirt and breeding bacteria is reduced, the cleanliness of the whole coating is further improved, and the coating is more suitable for being applied to medical instruments.
The graphene with the specific parts is added into the non-stick coating, the graphene material has a low friction coefficient and good wear resistance, and the non-stick property and the glossiness of a non-stick coating prepared from the non-stick coating are further improved by matching with the silica sol.
In summary, the glossiness of the non-stick coating provided by the invention is 25-32; the wear resistance is excellent, and the weight loss is only 0.0012-0.0014 g after the grinding wheel is used for grinding 200 circles under a 250g weight; the thermal stability is good, and the 5% thermal weight loss temperature is 310-342 ℃; and the non-stick property test can be passed, the medical instrument can be applied, and the medical instrument is sanitary and safe and has long service life.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments. It should be understood by those skilled in the art that the examples are only for the understanding of the present invention and should not be construed as the specific limitations of the present invention.
The reagents or materials used in the following examples are available from conventional manufacturers, with specific manufacturers and models as shown in table 1:
TABLE 1
Examples 1 to 3
The non-stick coating comprises the following specific components in parts by weight as shown in Table 2.
TABLE 2
The preparation method comprises the following steps:
(1) adding polytetrafluoroethylene, polyphenylene sulfide and modified graphene (adding graphene and dopamine into deionized water according to the mass ratio of 1:0.5 at 350 ℃, stirring for 2 hours at 45 ℃ to obtain modified graphene), chromium oxide and bronze powder, and mixing for 6 hours at the rotation speed of 1200r/min to obtain a dispersion liquid;
(2) and (2) mixing the dispersion liquid obtained in the step (1), the silica sol, the coupling agent, the leveling agent, the defoaming agent and the film-forming auxiliary agent for 2 hours at the rotating speed of 750r/min to obtain the non-stick coating.
Example 4
A non-stick coating is different from example 1 in that the addition amount of silica sol with the particle size of 8nm is 8 parts by weight, the addition amount of graphene is 2.5 parts by weight, and other components, the using amount and the preparation method are the same as those of example 1.
Example 5
A non-stick coating is different from example 1 in that 7 parts by weight of silica sol with the particle size of 8nm is added, 3.5 parts by weight of graphene is added, and other components, the using amount and the preparation method are the same as those of example 1.
Example 6
A non-stick coating is different from example 1 in that a silica sol with a particle size of 30nm is used instead of a silica sol with a particle size of 8nm, and other components, the using amount and the preparation method are the same as those of example 1.
Example 7
A non-stick coating is different from example 1 in that a silica sol with a particle size of 40nm is used instead of a silica sol with a particle size of 8nm, and other components, the using amount and the preparation method are the same as those of example 1.
Example 8
A non-stick coating, which is different from example 1 in that graphene is used to replace modified graphene, and other components, amounts and preparation methods are the same as those in example 1.
Example 9
A non-stick coating, which is different from example 1 in that a silane coupling agent (KH560) modified graphene (graphene and KH560 are added into absolute ethyl alcohol according to a mass ratio of 1:0.5 and mixed for 4 hours at 45 ℃) is adopted to replace dopamine modified graphene, and other components, the using amount and the preparation method are the same as those in example 1.
Comparative example 1
A non-stick coating is different from example 1 in that the addition amount of silica sol with the particle size of 8nm is 9 parts by weight, the addition amount of graphene is 1.5 parts by weight, and other components, the using amount and the preparation method are the same as those of example 1.
Comparative example 2
A non-stick coating is different from example 1 in that the addition amount of silica sol with the particle size of 8nm is 6 parts by weight, the addition amount of graphene is 4.5 parts by weight, and other components, the using amount and the preparation method are the same as those of example 1.
Comparative example 3
A non-stick coating is different from example 1 in that no silica sol with a particle size of 8nm is added, polytetrafluoroethylene is added in an amount of 72.5 parts by weight, and other components, use amounts and preparation methods are the same as those of example 1.
Comparative example 4
A non-stick coating is different from example 1 in that dopamine modified graphene is not added, polytetrafluoroethylene is added in an amount of 68 parts by weight, and other components, the using amount and the preparation method are the same as those in example 1.
Application examples 1 to 9
The non-stick coating is prepared by putting the non-stick coating obtained in the embodiment 1-9 into a high-temperature sintering furnace, and plasticizing at 375 ℃ for 20 min.
Comparative application examples 1 to 4
The non-stick coating is prepared by putting the non-stick coating obtained in the comparative examples 1-4 into a high-temperature sintering furnace, and plasticizing at 375 ℃ for 20 min.
And (3) performance testing:
(1) non-stick property: testing according to HG/T4563-;
(2) gloss: according to GB/T9754-2007 determination of the specular gloss of paint films of metallic pigment-free paints;
(3) thermal stability: the method is characterized by measuring the 5% thermal weight loss temperature of a sample, the used instrument is a synchronous thermal analyzer TGA/DSC1 of Mettler company for test characterization, and the test conditions of the sample are as follows: under an air atmosphere;
(4) wear resistance: the test is carried out according to GB1768-1979 'method for measuring the wear resistance of paint films', and the weight loss of a grinding wheel under a weight of 250g after grinding for 200 circles is taken as the evaluation standard of the wear resistance.
The non-stick coatings obtained in the application examples 1 to 9 and the comparative application examples 1 to 4 were tested according to the test method, and the test results are shown in table 3:
TABLE 3
| Non-tackiness | Degree of gloss | Thermal stability of the composition | Abrasion resistance (weightlessness g) | |
| Application example 1 | Through, has no residue | 32 | 322 | 0.0012 |
| Application example 2 | Through, has no residue | 30 | 315 | 0.0014 |
| Application example 3 | Through, has no residue | 30 | 342 | 0.0013 |
| Application example 4 | Through, has no residue | 28 | 318 | 0.0012 |
| Application example 5 | Through, has no residue | 29 | 320 | 0.0014 |
| Application example 6 | Through, has no residue | 29 | 313 | 0.0013 |
| Application example 7 | By a slight residue | 25 | 320 | 0.0012 |
| Application example 8 | By a slight residue | 27 | 310 | 0.0014 |
| Application example 9 | By a slight residue | 25 | 320 | 0.0012 |
| Comparative application example 1 | By a slight residue | 20 | 284 | 0.0026 |
| Comparative application example 2 | By a slight residue | 22 | 320 | 0.0032 |
| Comparative application example 3 | Failed through | 18 | 321 | 0.004 |
| Comparative application example 4 | Failed through | 20 | 217 | 0.0025 |
According to the data in Table 3, the non-stick coating prepared by the non-stick coating provided by the invention has excellent non-stick performance and thermal stability, and has higher glossiness; and the weight loss is low, which indicates that the coating has good wear resistance and ensures the service life of the non-stick coating.
Specifically, the non-stick coatings obtained in application examples 1-9 have the glossiness of 25-32, the 5% thermal weight loss temperature of 310-342 ℃, the weight loss of 0.0012-0.0014 g, and can pass a non-stick test; compared with the glossiness (18-22) of the non-stick coating obtained by the comparative application examples 1-4, the glossiness is improved by 14-72%, and the weight loss (0.0026-0.004 g) is reduced by 85-233%; compared with a non-stick coating with less addition of graphene (comparative application example 1) and a non-stick coating without addition of graphene (comparative application example 4), the thermal stability is greatly improved, and compared with application examples 3 and 4, the non-stick coating cannot pass a non-stick test, and compared with application examples 1 and 2, the non-stick coating passes the non-stick test but has residues;
comparing application examples 1, 6 and 7, it can be seen that when the particle size of silica in the silica sol in the non-stick coating is larger than 30nm (application example 7), the non-stick property, wear resistance and gloss of the prepared non-stick coating are all reduced, because the too large particle size is not favorable for filling the pores of the non-stick coating, and the residual silica adversely affects the surface flatness of the coating, and further affects the gloss, non-stick property and wear resistance;
as can be seen by comparing application examples 1, 8 and 9, the non-stick coating added with dopamine-modified graphene (application example 1) has higher wear resistance and glossiness, because dopamine-modified graphene has better dispersibility in polytetrafluoroethylene than the non-stick coating added with unmodified graphene (application example 8), and thus is beneficial to improving glossiness and wear resistance; compared with the non-stick coating (application example 9) added with the silane coupling agent modified graphene, dopamine is colorless and does not affect the glossiness of the coating.
In conclusion, it can be seen that the nonstick coating with non-stickiness, wear resistance and better glossiness can be prepared by adding the silica sol and the graphene into the polytetrafluoroethylene and controlling the dosage ratio of the silica sol and the graphene.
The applicant states that the invention is illustrated by the above examples to provide a non-stick coating and a process for its preparation and use, but the invention is not limited to the above examples, which does not mean that the invention must be practiced in reliance thereon. It should be understood by those skilled in the art that any modification of the present invention, equivalent substitutions of the raw materials of the product of the present invention, addition of auxiliary components, selection of specific modes, etc., are within the scope and disclosure of the present invention.
Claims (10)
1. The non-stick coating is characterized by comprising the following components in parts by weight: 50-80 parts of polytetrafluoroethylene, 40-60 parts of polyphenylene sulfide, 7-8 parts of silica sol, 10-15 parts of chromium oxide, 1-5 parts of graphene and 8-12 parts of coupling agent.
2. The non-stick coating of claim 1, wherein the polytetrafluoroethylene has a melt viscosity of 50 to 1 x 105Pa·s；
Preferably, the mass percentage of the silicon dioxide in the silicon dioxide sol is 40-60%;
preferably, the particle size of the silica is less than 30 nm.
3. The non-stick coating of claim 1 or 2, wherein the graphene is dopamine modified graphene;
preferably, the coupling agent is a titanate coupling agent.
4. The non-stick coating according to any one of claims 1 to 3, further comprising any one or a combination of at least two of bronze powder, an antifoaming agent, a leveling agent or a film forming aid;
preferably, the content of the bronze powder in the non-stick coating is 5-12 parts by weight;
preferably, the content of the defoaming agent in the non-stick coating is 4-7 parts by weight;
preferably, the defoaming agent comprises any one of polyoxyethylene polyoxypropylene pentaerythritol ether, polyoxyethylene polyoxypropylene amine ether, polyoxypropylene glycerol ether or polyoxypropylene polyoxyethylene glycerol ether or a combination of at least two of the polyoxyethylene polyoxypropylene pentaerythritol ether, the polyoxyethylene polyoxypropylene amine ether, the polyoxypropylene glycerol ether and the polyoxypropylene polyoxyethylene glycerol ether;
preferably, the content of the leveling agent in the non-stick coating is 6-7 parts by weight;
preferably, the leveling agent comprises a water-soluble silicone oil;
preferably, the content of the film-forming aid in the non-stick coating is 3-6 parts by weight;
preferably, the coalescent comprises any one or a combination of at least two of diisopropyl alcohol adipate and/or lauryl alcohol ester.
5. The non-stick coating according to any one of claims 1 to 4, comprising the following components in parts by weight: 60-70 parts of polytetrafluoroethylene, 45-55 parts of polyphenylene sulfide, 7-8 parts of silica sol, 10-13 parts of chromium oxide, 1-5 parts of dopamine modified graphene, 8-10 parts of coupling agent, 5-10 parts of bronze powder, 5-6 parts of defoaming agent, 6-7 parts of flatting agent and 4-5 parts of film-forming assistant.
6. A method for preparing a non-stick coating according to any of claims 1 to 5, characterized in that it comprises the following steps:
(1) mixing polytetrafluoroethylene, polyphenylene sulfide, graphene, chromium oxide and optionally bronze powder to obtain a dispersion liquid;
(2) and (2) mixing the dispersion liquid obtained in the step (1), silica sol, a coupling agent, an optional leveling agent, an optional defoaming agent and an optional film-forming auxiliary agent to obtain the non-stick coating.
7. The preparation method according to claim 6, wherein the mixing time in the step (1) is 5-8 h;
preferably, the temperature of the mixing in the step (1) is 300-400 ℃;
preferably, the mixing in the step (1) is carried out under the stirring condition, and more preferably under the stirring condition with the rotating speed of 900-1500 r/min;
preferably, the mixing time in the step (2) is 1-4 h;
preferably, the mixing in the step (2) is carried out under the condition of stirring, and more preferably under the condition of stirring at the stirring speed of 500-1000 r/min.
8. The method according to claim 6 or 7, characterized in that it comprises the steps of:
(1) mixing polytetrafluoroethylene, graphene, polyphenylene sulfide, chromium oxide and optionally bronze powder for 5-8 hours at the temperature of 300-400 ℃ under the stirring condition of the rotating speed of 900-1500 r/min to obtain a dispersion liquid;
(2) and (2) mixing the dispersion liquid obtained in the step (1), the silica sol, the coupling agent, the optional leveling agent, the optional defoaming agent and the optional film-forming auxiliary agent for 1-4 hours under the stirring condition that the rotating speed is 500-1000 r/min to obtain the non-stick coating.
9. A non-stick coating, characterized in that the non-stick coating is prepared by sintering the non-stick coating of any one of claims 1 to 5 at a high temperature.
10. Use of the non-stick coating of claim 9 in a medical device;
preferably, the application comprises an application in a medical tray.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103740192A (en) * | 2013-11-12 | 2014-04-23 | 宁波墨西科技有限公司 | Graphene-modified fluororesin coating material |
| CN106189562A (en) * | 2016-07-28 | 2016-12-07 | 杭州吉华高分子材料股份有限公司 | A kind of infra-red radiation heat radiation aqueous wear-resistant unsticky coating and preparation method thereof |
| CN106854399A (en) * | 2016-12-23 | 2017-06-16 | 余姚市赫玛涂料有限公司 | A kind of water base release coating of high heat conduction and its preparation method and application |
| CN107523153A (en) * | 2017-09-06 | 2017-12-29 | 巨化集团技术中心 | A kind of non-viscous paint additive |
| CN108893009A (en) * | 2018-07-24 | 2018-11-27 | 宁波蒙曼生物科技有限公司 | A kind of high temperature resistance high heat conduction non-viscous paint and its preparation method and application |
| CN110144151A (en) * | 2019-05-30 | 2019-08-20 | 陈理抗 | A kind of long-acting wear resistant type teflon coating |
-
2020
- 2020-11-27 CN CN202011364766.XA patent/CN114539856A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103740192A (en) * | 2013-11-12 | 2014-04-23 | 宁波墨西科技有限公司 | Graphene-modified fluororesin coating material |
| CN106189562A (en) * | 2016-07-28 | 2016-12-07 | 杭州吉华高分子材料股份有限公司 | A kind of infra-red radiation heat radiation aqueous wear-resistant unsticky coating and preparation method thereof |
| CN106854399A (en) * | 2016-12-23 | 2017-06-16 | 余姚市赫玛涂料有限公司 | A kind of water base release coating of high heat conduction and its preparation method and application |
| CN107523153A (en) * | 2017-09-06 | 2017-12-29 | 巨化集团技术中心 | A kind of non-viscous paint additive |
| CN108893009A (en) * | 2018-07-24 | 2018-11-27 | 宁波蒙曼生物科技有限公司 | A kind of high temperature resistance high heat conduction non-viscous paint and its preparation method and application |
| CN110144151A (en) * | 2019-05-30 | 2019-08-20 | 陈理抗 | A kind of long-acting wear resistant type teflon coating |
Non-Patent Citations (1)
| Title |
|---|
| 中国复合材料学会: "《复合材料技术路线图》", 31 July 2020, 中国科学技术出版社 * |
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