CN112280355A - Fingerprint-resistant coating and medical hand sink applying same - Google Patents
Fingerprint-resistant coating and medical hand sink applying same Download PDFInfo
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- CN112280355A CN112280355A CN202011180399.8A CN202011180399A CN112280355A CN 112280355 A CN112280355 A CN 112280355A CN 202011180399 A CN202011180399 A CN 202011180399A CN 112280355 A CN112280355 A CN 112280355A
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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
- C09D151/00—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers
- C09D151/08—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers grafted on to macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C09D151/085—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers grafted on to macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds on to polysiloxanes
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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
- C09D101/00—Coating compositions based on cellulose, modified cellulose, or cellulose derivatives
- C09D101/02—Cellulose; Modified cellulose
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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
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- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive 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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- 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
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- C25F3/00—Electrolytic etching or polishing
- C25F3/02—Etching
- C25F3/06—Etching of iron or steel
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
- E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
- E03C1/12—Plumbing installations for waste water; Basins or fountains connected thereto; Sinks
- E03C1/14—Wash-basins connected to the waste-pipe
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- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- C08K2201/00—Specific properties of additives
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Abstract
The application relates to the field of coatings, and particularly discloses a fingerprint-resistant coating and a medical hand sink applying the coating. The fingerprint-resistant coating comprises an anticorrosive coating and a fingerprint-resistant coating which are sequentially coated from inside to outside, wherein the anticorrosive coating is prepared from the following raw materials in parts by weight through a heat preservation reaction: 45-50 parts of matrix sol solution, 3-5 parts of benzoyl peroxide, 15-20 parts of absolute ethyl alcohol, 3-5 parts of nano titanium dioxide and 10-15 parts of di (methacryloyloxyethyl) hydrogen phosphate; the matrix sol solution is prepared by stirring and mixing ethyl orthosilicate, a silane coupling agent and 45-50% by mass of absolute ethyl alcohol according to the mass ratio of 1: 1-2: 3-5; the fingerprint-resistant coating has excellent fingerprint resistance and high coating film bonding strength, and effectively prolongs the service life of a stainless steel water tank. In addition, the surface of the stainless steel water pool is coated with the fingerprint-resistant coating, so that the service life of the stainless steel water pool is effectively prolonged.
Description
Technical Field
The application relates to the field of medical instruments, in particular to a fingerprint-resistant coating and a medical hand sink applying the coating.
Background
Stainless steel has been widely used in the medical field as a metal material, and the stainless steel metal material can be used as a material capable of contacting with organisms and is more commonly used in medical instruments, thereby forming the concept, the application range and the relevant standards of medical stainless steel. Among them, the processing of stainless steel into a medical pool is also a common stainless steel product in the medical field. In the process of using the stainless steel water tank, a large number of fingerprint prints are formed on the surface of the stainless steel water tank after a user frequently contacts the stainless steel water tank, and the fingerprint prints remained on the surface of the stainless steel water tank not only can generate cross infection risks, but also can easily cause corrosion to influence the appearance, so that the service life of the stainless steel water tank is reduced, the fingerprint resistance of the existing stainless steel water tank is improved, and the service life of the stainless steel water tank is necessarily prolonged.
The related technology can refer to Chinese invention patent with publication number CN107880673A, and discloses an anti-fingerprint stainless steel composite board, which comprises a substrate, wherein the substrate is compounded with a stainless steel layer through a high molecular adhesive, the outer surface of the stainless steel layer is coated with varnish, the stainless steel layer comprises, by weight, 70-80 parts of iron, 15-20 parts of chromium, 5-10 parts of nickel, 5-10 parts of silicon, 1-3 parts of tungsten, 1-3 parts of molybdenum, 1-3 parts of neodymium, 1-3 parts of tin and 1-3 parts of zirconium, and the anti-fingerprint agent in the varnish comprises, by weight, 50-60 parts of perfluoropolyether, 20-30 parts of waterborne polyurethane, 10-15 parts of epoxy resin, 5-8 parts of diatomite, 5-8 parts of zeolite and 2-5 parts of titanium dioxide. According to the fingerprint-resistant stainless steel composite board and the preparation method thereof, the strength of the stainless steel layer is improved by adding chromium, nickel, silicon, tungsten, molybdenum, neodymium, tin and zirconium, and the modifier in the varnish is independently developed and developed, so that the fingerprint-resistant stainless steel composite board has good fingerprint resistance.
In view of the above-mentioned related technologies, the applicant believes that in the scheme of preparing the fingerprint-resistant stainless steel coating by directly loading the varnish, the varnish is only used for coating modification, so that the durability and the coating performance are poor, and the subsequent fingerprint resistance performance is poor, and finally, a stainless steel pool adhered by fingerprints for a long time is corroded by fingerprints, so that the service life is poor.
Disclosure of Invention
In order to improve the bonding strength of the fingerprint-resistant coating and the stainless steel substrate of the medical stainless steel water tank, so as to improve the fingerprint-resistant durability of the stainless steel water tank and finally prolong the service life of the stainless steel water tank, the application provides a fingerprint-resistant coating on the first aspect, the fingerprint-resistant coating for the water tank comprises an anticorrosive coating and a fingerprint-resistant coating which are sequentially coated from inside to outside, and the anticorrosive coating is prepared from the following raw materials in parts by weight through a heat preservation reaction: 45-50 parts of matrix sol solution, 3-5 parts of benzoyl peroxide, 15-20 parts of absolute ethyl alcohol, 3-5 parts of nano titanium dioxide and 10-15 parts of di (methacryloyloxyethyl) hydrogen phosphate; the matrix sol solution is prepared by stirring and mixing ethyl orthosilicate, a silane coupling agent and 45-50% by mass of absolute ethyl alcohol according to the mass ratio of 1: 1-2: 3-5.
By adopting the technical scheme, as the anticorrosion layer is additionally arranged between the fingerprint-resistant layer and the stainless steel plate, the anticorrosion layer adopts a coating structure prepared by a sol-gel scheme, the bonding strength between the anticorrosion layer and the stainless steel plate and the fingerprint-resistant layer can be obviously improved, and meanwhile, in the sol-gel structure, a phosphorylation crosslinking monomer is introduced, after polymerization reaction, the formed gel material and the monomer generate crosslinking reaction and are crosslinked into a network structure, so that a compact anticorrosion layer is prepared.
Further, the fingerprint resistant coating for a pool further comprises: the bonding layer is arranged between the stainless steel base material and the anti-corrosion layer, and the bonding layer completely covers the surface of the stainless steel base material.
Through adopting above-mentioned technical scheme, because this application sets up the anchor coat between anticorrosive coating and stainless steel sheet to this anchor coat is as one deck interfacial layer, aim at improves the bonding strength between stainless steel sheet and the coating, thereby has improved the durability of the resistant fingerprint of stainless steel sheet.
Further, the bonding layer is prepared through electrochemical etching, and etching liquid adopted in the electrochemical etching is prepared by stirring and mixing ferric nitrate solution, phytic acid and deionized water according to the mass ratio of 1:3: 9.
Through adopting above-mentioned technical scheme, because this application carries out etching treatment with ferric nitrate, phytic acid and deionized water for the etching solution, aim at through electrochemical corrosion, form unevenness's hole structure on the stainless steel surface, thereby the surface specific surface area on stainless steel surface has been improved, on this basis, owing to added phytic acid in the etching treatment process and modified, unimolecule organic film layer and the organic coating that phytic acid and stainless steel metal surface formed have similar chemical properties, active groups such as hydroxyl and the phosphate group that contain in the film layer easily take place chemical action with the organic coating, make metal surface and organic coating have very strong adhesive capacity, thereby the corrosion resisting property of metal has been improved.
Further, the thickness of the anticorrosive layer is 3-5 μm.
Through adopting above-mentioned technical scheme, because this application optimizes the anticorrosive coating thickness, make anticorrosive coating thickness neither can be because too thick, lead to the coating bonding performance not good and antifriction performance descends, also can not be because the coating thickness is too thin reduces the resistant fingerprint endurance quality of stainless steel.
Further, the preparation step of the fingerprint-resistant layer comprises the following steps: adding bacterial cellulose into deionized water, stirring and mixing, collecting a mixed solution, stirring and mixing sodium hypophosphite, citric acid with the mass fraction of 5% and the mixed solution, standing, and collecting a standing mixed solution; and coating the static mixed solution on the surface of the anticorrosive modified plate, and performing freeze drying treatment to obtain the fingerprint-resistant layer.
Through adopting above-mentioned technical scheme, because this application has adopted bacterial cellulose to prepare the gel liquid to freezing and processing prepares into the resistant fingerprint layer of aerogel, this is because the aerogel of this freezing preparation has single nanofiber to the micro-concave pore structure of the multiscale nanometer of nanofiber aggregate, and hydrophobic and oleophobic characteristic can effectively be realized to this structure, thereby effectively improves the resistant fingerprint performance of stainless steel panel.
Further, the plate coated with the fingerprint resistant layer is placed in a vacuum drying oven, and a low surface energy treating agent is deposited.
Through adopting above-mentioned technical scheme, because this application has adopted low surface energy treating agent to handle the aerogel material surface, through the fluorine atom that exists in the low surface energy, make the surface energy of aerogel greatly reduce, handle this aerogel coating through vapor deposition's scheme simultaneously, when having protected original aerogel material's structure, can also effectively reduce the resistant fingerprint effect on resistant fingerprint layer.
Further, the low surface energy treating agent is any one of tridecafluorooctyltriethoxysilane or trichloro (1H, 1H,2H, 2H-heptadecafluorodecyl) silane.
By adopting the technical scheme, as any one of tridecafluorooctyltriethoxysilane or trichloro (1H, 1H,2H, 2H-heptadecafluorodecyl) silane is adopted in the stainless steel pool, and fluorine elements are contained in the two substances, the fingerprint resistance effect of the fingerprint resistance layer is further improved, and the service life of the stainless steel pool is effectively prolonged.
Further, the surface deposition temperature is 100-110 ℃.
Through adopting above-mentioned technical scheme, because this application has adopted suitable deposition temperature, optimized the thickness of resistant fingerprint layer, on this basis, effectively prevent the residue of fingerprint when using, reduced the modified condition of deposit simultaneously to reduce the degree of difficulty of preparation, reduce the cost of preparation.
In a second aspect, the present application provides a medical hand sink comprising a fingerprint resistant coating as described in any one of the preceding claims.
By adopting the technical scheme, the fingerprint resistance performance of the stainless steel water tank is improved by the fingerprint resistance type coating prepared by the method, so that the corrosion resistance of the stainless steel water tank is improved, the service life of the stainless steel water tank is finally prolonged, and all the stainless steel water tanks prepared by the method also have the effects.
In summary, the present application includes at least one of the following beneficial technical effects:
first, this application sets up the anchor coat between anticorrosive coating and stainless steel sheet to this anchor coat is as one deck interfacial layer, and the bonding strength between stainless steel sheet and the coating is improved to the endurance that has improved the resistant fingerprint of stainless steel sheet.
Secondly, this application adopts between resistant fingerprint layer and stainless steel panel, has set up one deck anticorrosive coating additional, show to improve and the stainless steel panel with resistant bonding strength between the fingerprint layer, introduce phosphorylation cross-linking monomer in the sol-gel structure simultaneously, the reaction and cross-linking become network structure to prepare comparatively compact anticorrosive coating, make the resistant fingerprint coating in the stainless steel pond of preparation have with the stainless steel base body between good bonding strength, make it have the resistant fingerprint performance of permanence, effectively improve the life-span in stainless steel pond.
Thirdly, the application takes ferric nitrate, phytic acid and deionized water as etching liquid to carry out etching treatment, and aims to form an uneven hole structure on the surface of stainless steel through electrochemical corrosion, so that the surface specific surface area of the surface of the stainless steel is improved.
Detailed Description
The present application will be described in further detail with reference to examples.
In the embodiment of the present application, the used apparatuses and raw materials and auxiliary materials are as follows, but not limited thereto:
a machine: the dispersion machine is an SDF-110 high-speed dispersion machine, a JC-2000C 1 contact angle measuring instrument, a LKY-II low-speed reciprocating friction and wear tester, a HDFHGYW composite salt spray test box in Heimengding instruments and equipment factories and a coating spin-coating machine.
Examples
Example 1
Sequentially grinding the stainless steel plate by using 200#, 500#, 1000# and 1500# abrasive paper, after the treatment is finished, washing for 3 times by using acetone, naturally drying and collecting to obtain a surface-treated stainless steel plate;
stirring and mixing ferric nitrate, phytic acid and deionized water according to the mass ratio of 1:3:9, collecting etching mixed liquid, soaking two pieces of surface-treated stainless steel plates into the etching mixed liquid to serve as a cathode and an anode, then performing etching treatment in a room temperature environment, taking out the etching plates after the etching is finished, sequentially washing the etching plates for 3 times by using acetone and deionized water, and naturally drying to obtain the etching-treated plates;
stirring and mixing ethyl orthosilicate, a silane coupling agent and 45 mass percent of absolute ethyl alcohol according to the mass ratio of 1:1:3, standing for 3 hours at room temperature, and stirring and mixing to obtain a matrix sol solution; respectively weighing 45mL of matrix sol solution, 3g of benzoyl peroxide, 15mL of absolute ethyl alcohol, 3g of nano titanium dioxide and 10g of di (methacryloyloxyethyl) hydrogen phosphate in parts by weight, placing the mixture in a reaction kettle, stirring, mixing, placing the mixture at 70 ℃ for heat preservation reaction for 35 hours, filtering, collecting filtrate, standing for defoaming treatment, collecting antiseptic gel solution, placing the antiseptic gel solution in a spin coating device, performing spin coating treatment on the surface of an etched plate at 700r/min for 1min, and drying the plate at 100 ℃ to constant weight to obtain an antiseptic modified plate with the thickness of 3 mu m;
adding bacterial cellulose into deionized water according to the mass ratio of 1:20, stirring and mixing, collecting mixed liquor, and mixing according to the mass ratio of 1: stirring and mixing sodium hypophosphite, citric acid with the mass fraction of 5% and the mixed solution, standing for 6 hours, collecting the standing mixed solution, coating the standing mixed solution on the surface of an anticorrosion modified plate, placing the anticorrosion modified plate at-45 ℃ and 0.5MPa for vacuum drying for 70 hours, collecting the coated modified plate, placing the coated modified plate in a vacuum drying box, depositing the surface of the coated modified plate for 2 hours by using tridecafluorooctyltriethoxysilane as a raw material, standing and cooling to room temperature, and thus obtaining the fingerprint-resistant coating for the water tank.
Example 2
Sequentially grinding the stainless steel plate by using 200#, 500#, 1000# and 1500# abrasive paper, after finishing the treatment, washing for 4 times by using acetone, naturally drying and collecting to obtain a surface-treated stainless steel plate;
stirring and mixing ferric nitrate, phytic acid and deionized water according to the mass ratio of 1:3:9, collecting etching mixed liquid, soaking two pieces of surface-treated stainless steel plates into the etching mixed liquid to serve as a cathode and an anode, then performing etching treatment in a room temperature environment, taking out the etching plates after the etching is finished, sequentially washing the etching plates for 4 times by using acetone and deionized water, and naturally drying to obtain the etching-treated plates;
stirring and mixing ethyl orthosilicate, a silane coupling agent and 47% of absolute ethyl alcohol by mass ratio of 1:1:4, standing at room temperature for 4 hours, and stirring and mixing to obtain a matrix sol solution; respectively weighing 47mL of matrix sol solution, 4g of benzoyl peroxide, 17mL of absolute ethyl alcohol, 4g of nano titanium dioxide and 12g of di (methacryloyloxyethyl) hydrogen phosphate in parts by weight, placing the mixture in a reaction kettle, stirring, mixing, reacting at 75 ℃ for 4 hours under heat preservation, filtering, collecting filtrate, standing, defoaming, collecting antiseptic gel solution, placing the antiseptic gel solution in a spin coating device, performing spin coating treatment on the surface of the etched plate at 750r/min for 1min, and drying at 105 ℃ to constant weight to obtain an antiseptic modified plate with the thickness of 4 mu m;
adding bacterial cellulose into deionized water according to the mass ratio of 1:20, stirring and mixing, collecting mixed liquor, and mixing according to the mass ratio of 1: stirring and mixing sodium hypophosphite, citric acid with the mass fraction of 5% and the mixed solution, standing for 7 hours, collecting the standing mixed solution, coating the standing mixed solution on the surface of an anticorrosive modified plate, placing the anticorrosive modified plate at-42 ℃ under 0.7MPa for vacuum drying for 71 hours, collecting the coated modified plate, placing the coated modified plate in a vacuum drying box, depositing the surface of the coated modified plate for 2 hours by using tridecafluorooctyltriethoxysilane as a raw material, standing and cooling to room temperature, and thus obtaining the fingerprint-resistant coating for the water tank.
Example 3
Sequentially grinding the stainless steel plate by using 200#, 500#, 1000# and 1500# abrasive paper, after finishing the treatment, washing for 5 times by using acetone, naturally drying and collecting to obtain a surface-treated stainless steel plate;
stirring and mixing ferric nitrate, phytic acid and deionized water according to the mass ratio of 1:3:9, collecting etching mixed liquid, soaking two pieces of surface-treated stainless steel plates into the etching mixed liquid to serve as a cathode and an anode, then performing etching treatment in a room temperature environment, taking out the etching plates after the etching is finished, sequentially washing the etching plates for 5 times by using acetone and deionized water, and naturally drying to obtain the etching-treated plates;
stirring and mixing ethyl orthosilicate, a silane coupling agent and 50% by mass of absolute ethyl alcohol according to the mass ratio of 1:2:5, standing at room temperature for 5 hours, and stirring and mixing to obtain a matrix sol solution; respectively weighing 50mL of matrix sol solution, 5g of benzoyl peroxide, 20mL of absolute ethyl alcohol, 5g of nano titanium dioxide and 15g of di (methacryloyloxyethyl) hydrogen phosphate in parts by weight, placing the mixture in a reaction kettle, stirring, mixing, reacting at 80 ℃ for 5 hours, filtering, collecting filtrate, standing, defoaming, collecting antiseptic gel solution, placing the antiseptic gel solution in a spin coating device, performing spin coating treatment on the surface of the etched plate at 800r/min for 2min, and drying at 110 ℃ to constant weight to obtain an antiseptic modified plate with the thickness of 5 mu m;
adding bacterial cellulose into deionized water according to the mass ratio of 1:20, stirring and mixing, collecting mixed liquor, and mixing according to the mass ratio of 1: stirring and mixing sodium hypophosphite, citric acid with the mass fraction of 5% and the mixed solution, standing for 8 hours, collecting the standing mixed solution, coating the standing mixed solution on the surface of an anticorrosive modified plate, placing the anticorrosive modified plate at-40 ℃ and 0.6MPa for vacuum drying for 72 hours, collecting the coated modified plate, placing the coated modified plate in a vacuum drying box, depositing the surface of the coated modified plate for 3 hours by using trichloro (1H, 1H,2H, 2H-heptadecafluorodecyl) silane as a raw material, and standing and cooling to room temperature to obtain the fingerprint-resistant coating for the water pool.
Example 4
In example 4, the fingerprint-resistant coating for the stainless steel pool is prepared without coating the bonding layer, and the rest conditions and the component ratio are the same as those in example 1.
Performance test
The fingerprint-resistant coatings for the water tanks prepared in examples 1 to 4 were subjected to performance tests, specifically, fingerprint resistance, abrasion resistance, and coating adhesion.
Detection method/test method
(1) Fingerprint resistance: testing the hydrophobic and oleophobic properties of the coating by using a JC-2000C 1 type contact angle measuring instrument, taking ultrapure water/edible oil as probe liquid, measuring the dropping amount by using the static contact angle representation of the surface of film-forming glass, measuring for 5 times at different positions of the same sample, and taking the average value;
(2) testing oil resistance pen, namely taking 2 points at the middle position of the coated glass, wherein the middle length is 7 cm; drawing a straight line between two points by using an oil pen, repeatedly wiping the drawn straight line by using dust-free cloth until the handwriting cannot be wiped completely, and counting the number of times as N, wherein the number of times of the oil resistance pen is (N-1);
(3) and (3) the adhesion of the coating: soaking the stainless steel water tank coated with the fingerprint-resistant coating in boiling water for 2 hours, and then testing according to the requirements of ASTM D3359;
(4) testing the friction resistance of the coating on the surface of the glass, performing stage friction on the coated glass at the same position (with a mark) and for fixed times (50 times) by using an LKY-II type low-speed reciprocating friction and wear tester under the condition of loading 1kg of steel wool, and measuring 3 static contact angles at different positions of a marked area and averaging every 50 times of friction; the times that the contact angle is still larger than 100 degrees are effective friction-resistant times;
(5) the experiment is carried out by adopting a HDFHGYW composite salt spray test box of Shanghai Hengding instrument and equipment factory. With the following conditions: a sodium chloride solution with the concentration of 50g/L (the pH value of the solution is 7) is prepared by deionized water, the placing angle of a test piece is 20 degrees, the experiment temperature is 35 ℃, a salt spray test box is used for salt spray test to artificially simulate the salt spray environment condition, the corrosion resistance performance of a test sample is tested in a certain environment, and the test is carried out according to the national standard GT/T10125-1997 salt spray test for artificial atmosphere corrosion test.
The specific detection results are shown in the following table 1:
TABLE 1 Performance test Table
Referring to the comparison of the performance tests of table 1, it can be found that:
comparing the performances of the examples 1 to 3, which shows that the fingerprint resistance and the corrosion resistance of the example 3 are the best, and the technical scheme of the application can be implemented because the proportion of the added materials in the example 3 is the highest;
comparing the performances of the embodiment 1 and the embodiment 4, the adhesion and the friction resistance of the embodiment 4 are obviously reduced and the corrosion resistance is also reduced because the embodiment 4 is not coated with the bonding layer, which shows that the bonding layer arranged in the application can effectively improve the bonding strength between the stainless steel plate and the coating and improve the fingerprint resistance durability of the stainless steel plate.
Comparative example
Comparative examples 1 to 3
In comparative examples 1 to 3, the surface of the stainless steel plate was directly coated with the fingerprint resistant layer, and the rest conditions and the component ratios were the same as those in examples 1 to 3.
Comparative examples 4 to 6
Comparative examples 4 to 6 in the process of preparing the fingerprint-resistant coating for the stainless steel pool, the anticorrosive coating was not coated, and the other conditions and the component ratios were the same as those in examples 1 to 3.
Comparative examples 7 to 9
In comparative examples 7 to 9, the ferric nitrate solution and the deionized water were mixed in a mass ratio of 1:9, and the remaining conditions and component ratios were the same as in examples 1 to 3.
Comparative examples 10 to 12
In the comparative examples 10 to 12, when the fingerprint-resistant coating is prepared, the fingerprint-resistant coating of the stainless steel pool is prepared by directly depositing the low-surface-energy treating agent on the surface of the anticorrosive layer, and the rest conditions and the component ratio are the same as those in the examples 1 to 3.
Performance test
And respectively carrying out performance tests on the fingerprint-resistant coatings for the water tanks prepared in the comparative examples 1-12, and specifically testing the fingerprint resistance, the friction resistance and the coating adhesion performance of the coatings.
Detection method/test method
(1) Fingerprint resistance: testing the hydrophobic and oleophobic properties of the coating by using a JC-2000C 1 type contact angle measuring instrument, taking ultrapure water/edible oil as probe liquid, measuring the dropping amount by using the static contact angle representation of the surface of film-forming glass, measuring for 5 times at different positions of the same sample, and taking the average value;
(2) testing oil resistance pen, namely taking 2 points at the middle position of the coated glass, wherein the middle length is 7 cm; drawing a straight line between two points by using an oil pen, repeatedly wiping the drawn straight line by using dust-free cloth until the handwriting cannot be wiped completely, and counting the number of times as N, wherein the number of times of the oil resistance pen is (N-1);
(3) and (3) the adhesion of the coating: soaking the stainless steel water tank coated with the fingerprint-resistant coating in boiling water for 2 hours, and then testing according to the requirements of ASTM D3359;
(4) testing the friction resistance of the coating on the surface of the glass, performing stage friction on the coated glass at the same position (with a mark) and for fixed times (50 times) by using an LKY-II type low-speed reciprocating friction and wear tester under the condition of loading 1kg of steel wool, and measuring 3 static contact angles at different positions of a marked area and averaging every 50 times of friction; the times that the contact angle is still larger than 100 degrees are effective friction-resistant times;
(5) the experiment is carried out by adopting a HDFHGYW composite salt spray test box of Shanghai Hengding instrument and equipment factory. With the following conditions: a sodium chloride solution with the concentration of 50g/L (the pH value of the solution is 7) is prepared by deionized water, the placing angle of a test piece is 20 degrees, the experiment temperature is 35 ℃, a salt spray test box is used for salt spray test to artificially simulate the salt spray environment condition, the corrosion resistance performance of a test sample is tested in a certain environment, and the test is carried out according to the national standard GT/T10125-1997 salt spray test for artificial atmosphere corrosion test.
The specific detection results are shown in the following table 2:
TABLE 2 Performance test Table
Referring to the comparison of the performance tests of table 2, it can be found that:
comparing the comparative examples 1-3 with the examples 1-3, the comparative examples directly coat the fingerprint-resistant layer on the surface of the stainless steel plate, so that the stainless steel plate is not coated with the binding layer, and the data of comparison and detection shows that the coating adhesion strength, the corrosion resistance and the like are reduced, which shows that the scheme of the application can improve the bonding capacity between the surface of the stainless steel plate and the organic coating through etching treatment, so that the corrosion resistance of metal is improved;
comparing comparative examples 4-6 with examples 1-3, the corrosion resistance of the prepared stainless steel water pool fingerprint-resistant coating is obviously reduced by comparing data on the basis that an anticorrosive layer is not coated in the process of preparing the stainless steel water pool fingerprint-resistant coating, which shows that the corrosion resistance of the water pool fingerprint-resistant coating is effectively improved by the anticorrosive layer coated in the application;
comparing the comparative examples 7-9 with the examples 1-3, wherein the ferric nitrate solution and the deionized water are mixed according to the mass ratio of 1:9, and the ferric nitrate solution and the deionized water are stirred and mixed, namely, phytic acid is not added in the prepared bonding layer for modification, so that the bonding performance and the corrosion resistance of the coating are remarkably reduced, which shows that active groups such as hydroxyl, phosphate and the like contained in an organic film formed on the metal surface of the stainless steel and the phytic acid are easy to generate chemical action with the organic coating, and the metal surface and the organic coating have strong bonding capability, so that the corrosion resistance of the metal is improved;
finally, comparing the comparative examples 10-12 with the examples 1-3, when the fingerprint-resistant coating is prepared, the low surface energy treatment agent is directly deposited on the surface of the anti-corrosion layer, and the fingerprint-resistant layer is not formed through aerogel coating, so that the fingerprint resistance and the anti-corrosion performance of the fingerprint-resistant layer are obviously reduced, which shows that in the fingerprint-resistant layer adopted in the application, the coating structure formed by the aerogel material can effectively realize the hydrophobic and oleophobic characteristics, and further the fingerprint resistance of the stainless steel plate is effectively improved.
The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.
Claims (10)
1. The utility model provides a resistant fingerprint type coating which characterized in that, pond is with resistant fingerprint type coating includes anticorrosive coating and resistant fingerprint layer constitution of cladding from inside to outside in proper order, the anticorrosive coating is prepared through the heat preservation reaction by the raw materials that contain following parts by weight:
45-50 parts of matrix sol liquid;
3-5 parts of benzoyl peroxide;
15-20 parts of absolute ethyl alcohol;
3-5 parts of nano titanium dioxide;
10-15 parts of di (methacryloyloxyethyl) hydrogen phosphate;
the matrix sol solution is prepared by stirring and mixing ethyl orthosilicate, a silane coupling agent and 45-50% by mass of absolute ethyl alcohol according to the mass ratio of 1: 1-2: 3-5.
2. The fingerprint resistant coating of claim 1 wherein the fingerprint resistant coating for a pool further comprises:
the bonding layer is arranged between the stainless steel base material and the anti-corrosion layer, and the bonding layer completely covers the surface of the stainless steel base material.
3. The fingerprint-resistant coating as claimed in claim 2, wherein the bonding layer is prepared by electrochemical etching, and the etching solution adopted in the electrochemical etching is prepared by stirring and mixing ferric nitrate solution, phytic acid and deionized water according to a mass ratio of 1:3: 9.
4. The fingerprint-resistant coating of claim 2 wherein the corrosion protection layer is 3 to 5 μm thick.
5. The fingerprint resistant coating of claim 2 wherein said fingerprint resistant layer is prepared by steps comprising:
adding bacterial cellulose into deionized water, stirring and mixing, collecting a mixed solution, stirring and mixing sodium hypophosphite, citric acid with the mass fraction of 5% and the mixed solution, standing, and collecting a standing mixed solution;
and coating the static mixed solution on the surface of the anticorrosive modified plate, and performing freeze drying treatment to obtain the fingerprint-resistant layer.
6. The fingerprint resistant coating of claim 5 wherein said fingerprint resistant layer is prepared by steps further comprising: and (3) placing the plate coated with the fingerprint-resistant layer in a vacuum drying box, and depositing a low-surface-energy treating agent.
7. The fingerprint resistant coating of claim 6 wherein said low surface energy treating agent is any one of tridecafluorooctyltriethoxysilane or trichloro (1H, 1H,2H, 2H-heptadecafluorodecyl) silane.
8. The fingerprint-resistant coating of claim 5, wherein the freeze-drying process is vacuum drying at-45 to-40 ℃ and 0.5 to 0.6MPa for 70 to 72 hours.
9. The fingerprint resistant coating of claim 6 wherein said surface deposition temperature is from 100 ℃ to 110 ℃.
10. A medical hand sink comprising a fingerprint resistant coating according to any one of claims 1 to 9.
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