CN110157313B - Metal surface high-hardness scratch-resistant fingerprint-resistant sealant - Google Patents
Metal surface high-hardness scratch-resistant fingerprint-resistant sealant Download PDFInfo
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- CN110157313B CN110157313B CN201910401484.3A CN201910401484A CN110157313B CN 110157313 B CN110157313 B CN 110157313B CN 201910401484 A CN201910401484 A CN 201910401484A CN 110157313 B CN110157313 B CN 110157313B
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—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
- 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
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
Abstract
The invention relates to the field of preparation of sealing agents, and provides a metal surface high-hardness scratch-resistant fingerprint-resistant sealing agent, which at least comprises raw materials of water-based resin, water-based silicone oil, fatty alcohol polyether, an alkali reagent and a solvent; also provides a preparation method and a using method of the sealant.
Description
Technical Field
The invention relates to the field of preparation of sealing agents, in particular to a high-hardness scratch-resistant fingerprint-resistant sealing agent for a metal surface, and a preparation method and a use method thereof.
Background
In order to prevent corrosion, a layer of antirust sealing agent is coated on the surface of the hot-dip metal material to form a protective film. The magnesium alloy has good light weight, machinability, corrosion resistance, shock absorption, stable size and impact resistance, and is far superior to other materials. These characteristics have led to the use of magnesium alloys in a wide range of applications, such as in the transportation, electronics, medical, military and the like, with only a growing trend. Particularly, the material has good application prospect and great potential in the fields of 3C products (Computer, Consumer Electronic Product, Communication), high-speed rails, automobiles, bicycles, aerospace, architectural decoration, hand-held tools, medical rehabilitation instruments and the like, and becomes one of the development directions of future novel materials. Magnesium metal has very active property, very low electrode potential and very high chemical activity and electrochemical activity. The surfaces of magnesium and magnesium alloy are exposed in the air and are easily corroded by the atmosphere; and when magnesium and magnesium alloy are in contact with other metals, galvanic corrosion occurs as an anode. This causes the magnesium alloy to have insufficient performance, and severely limits the industrial application of the magnesium alloy. Therefore, the proper surface treatment of the magnesium alloy to improve the corrosion resistance and beautify the decorative function has very important significance. The common methods for corrosion prevention of magnesium alloy surface include chemical conversion coating, anodic oxidation, micro-arc oxidation, electroplating, electrophoresis, etc., wherein the chemical conversion coating treatment, i.e. chemical conversion treatment, is the treatment method with the simplest process and the lowest cost. The traditional chemical conversion treatment technology mainly adopts hexavalent chromium ions to form a layer of compact protective film on the surface of the magnesium alloy, can effectively protect the base material from being corroded, and has low cost and simple process and is widely applied. However, hexavalent chromium ions are toxic and strongly carcinogenic, seriously harming the ecological environment and human health. Therefore, the green and environment-friendly magnesium alloy chemical treatment process is the main research direction.
In recent years, the magnesium alloy chromium-free phosphate coating technology has made certain progress in application research, such as: magnesium alloy calcium vanadium series coating, calcium manganese vanadium series coating, phytic acid treatment, zirconium series coating treatment, etc. The calcium-vanadium and calcium-manganese-vanadium involucra have the advantages of stable film formation, good corrosion resistance, good conductivity, low cost and the like, and are widely applied to the surface treatment of the magnesium alloy. The coating layer is mainly composed of insoluble precipitates composed of calcium phosphate, manganese phosphate and calcium-manganese compounds of other acidic salts of phosphoric acid, but because the hardness of the coating layer is low, the coating layer is easily scratched and damaged by adjacent products in the product carrying process or the post-processing process, so that a magnesium alloy metal substrate is exposed, the products are corroded and scrapped, the qualification rate of the products is greatly reduced, unnecessary loss is caused, and the application and development of the magnesium alloy are seriously influenced.
Disclosure of Invention
In order to solve the technical problems, the invention provides a high-hardness scratch-resistant fingerprint-resistant sealant for metal surfaces, which at least comprises the following raw materials of water-based resin, water-based silicone oil, fatty alcohol polyether, an alkali agent and a solvent.
In a preferred embodiment, the aqueous resin in the present invention is selected from one or more of aqueous polyurethane resin, aqueous acrylic resin, aqueous silicone resin, and aqueous phenolic resin.
As a preferable technical solution, the aqueous polyurethane resin in the present invention is anionic aqueous polyurethane.
As a preferable technical scheme, the viscosity of the anionic waterborne polyurethane in the invention is 100-500 mPa.s.
In a preferred embodiment of the present invention, the metal is at least one selected from the group consisting of a magnesium alloy, an aluminum alloy, a copper alloy, a zinc alloy, a lead-tin alloy, and a titanium alloy.
As a preferable technical scheme, the viscosity of the water-based silicone oil is 500-5000 cps.
In a preferred embodiment, the alkali reagent in the present invention is selected from one or more of hydroxide alkali metal reagent, carbonate alkali metal reagent, and ammonia water.
As a preferable technical solution, the weight ratio of the aqueous resin, the aqueous silicone oil and the alkali agent in the present invention is 1: (0.5-1.5): (0.1-1).
The second aspect of the invention provides a preparation method of the sealant, which at least comprises the steps of adding a solvent into a container, further adding an alkali reagent, water-based resin, water-based silicone oil and fatty alcohol polyether, and stirring to obtain the sealant.
The third aspect of the invention provides a using method of the sealant, which at least comprises the steps of washing a metal product subjected to membrane treatment with overflow water, soaking the metal product in the sealant for 30-120 seconds at the treatment temperature of 20-80 ℃, and baking the metal product in an oven after the overflow water is washed.
Compared with the prior art, the invention has the following beneficial effects:
(1) the raw materials used in the invention are all aqueous components, are non-toxic and environment-friendly, and have simple preparation steps; the formed film layer is transparent and has no influence on the appearance of the magnesium alloy product;
(2) the hardness of the product is obviously improved, and the product is prevented from being scratched due to direct collision;
(3) the pollution of moisture, sweat, fingerprints and the like is prevented, and the corrosion resistance, fingerprint resistance and excellent salt mist resistance of the product are improved;
(4) the magnesium alloy can resist the high temperature of up to 300 ℃, prevent the magnesium alloy product from generating yellowing in the processes of baking and hot shaping, and has excellent high-temperature resistance;
(5) the binding force between the formed film and the paint is firmer, and the qualification rate of the sprayed product can be improved.
The technical features, content and advantages described in the previous sections of the invention will be more readily understood with reference to the following details.
Drawings
FIG. 1: the invention is shown in the enclosed magnesium alloy and the unsealed magnesium alloy products, the left side in figure 1 is the unsealed magnesium alloy product, and the right side in figure 1 is the magnesium alloy product after the sealing agent of the embodiment 1 is used;
FIG. 2: the trace remained after the surface of the magnesium alloy plate was treated by finger-pressing the magnesium alloy sheet closed with the sealing agent of example 1, wherein the magnesium alloy sheet was not closed on the right side in FIG. 1, and the magnesium alloy sheet was closed with the sealing agent of example 1 on the left side in FIG. 1;
FIG. 3: a graph showing the hydrophobic effect of the magnesium alloy after being blocked by the blocking agent in example 1;
FIG. 4: shows the effect of the magnesium alloy sealed by the sealant in the embodiment 1 after the salt spray test;
FIG. 5: shows the effect of placing an unsealed magnesium alloy product at a high temperature of 300 ℃ for 24 hours;
FIG. 6: shows the effect of the magnesium alloy sealed by the sealant in the embodiment 1, which is left at a high temperature of 300 ℃ for 24 hours;
FIG. 7: the present invention shows a magnesium alloy product using a closed magnesium alloy and an unsealed magnesium alloy product, the left side of fig. 1 shows a magnesium alloy product using the sealing agent of example 1 and the right side of fig. 1 shows a magnesium alloy product without the sealing agent.
Detailed Description
Unless otherwise indicated, implied from the context, or customary in the art, all parts and percentages herein are by weight and the testing and characterization methods used are synchronized with the filing date of the present application. To the extent that a definition of a particular term disclosed in the prior art is inconsistent with any definitions provided herein, the definition of the term provided herein controls.
The technical features of the technical solutions provided by the present invention are further clearly and completely described below with reference to the specific embodiments, and the scope of protection is not limited thereto.
The words "preferred", "preferably", "more preferred", and the like, in the present invention, refer to embodiments of the invention that may provide certain benefits, under certain circumstances. However, other embodiments may be preferred, under the same or other circumstances. Furthermore, the recitation of one or more preferred embodiments does not imply that other embodiments are not useful, nor is it intended to exclude other embodiments from the scope of the invention. The sources of components not mentioned in the present invention are all commercially available.
The invention provides a high-hardness scratch-resistant fingerprint-resistant sealant for metal surfaces, which at least comprises the following raw materials of water-based resin, water-based silicone oil, fatty alcohol polyether, an alkaline reagent and a solvent.
In some embodiments, the weight ratio of the aqueous resin to the fatty alcohol polyether is 1: (0.01-0.1); preferably, the weight ratio of the aqueous resin to the fatty alcohol polyether is 1: (0.04-0.06); more preferably, the weight ratio of the aqueous resin to the fatty alcohol polyether is 1: 0.05.
in some embodiments, the added mass of the solvent is 80% -98% of the total mass of the raw materials; preferably, the adding mass of the solvent is 90-96% of the total mass of the raw materials; more preferably, the added mass of the solvent is 94.9% of the total mass of the raw materials.
In some embodiments, the aqueous resin is selected from the group consisting of aqueous polyurethane resins, aqueous acrylic resins, aqueous silicone resins, aqueous phenolic resins, and combinations of one or more thereof; preferably, the aqueous resin is selected from one or more of aqueous polyurethane resin, aqueous acrylic resin and aqueous silicone resin; more preferably, the aqueous resin is an aqueous polyurethane resin.
In some embodiments, the aqueous polyurethane resin is an anionic aqueous polyurethane.
In some embodiments, the anionic aqueous polyurethane has a viscosity of 100-; preferably, the viscosity of the anionic aqueous polyurethane is 200-400 mPa.s; more preferably, the viscosity of the anionic aqueous polyurethane is 300 mpa.s.
The viscosity in the invention is 20 ℃.
In some embodiments, the metal is selected from at least one of a magnesium alloy, an aluminum alloy, a copper alloy, a zinc alloy, a lead-tin alloy, a titanium alloy; preferably, the metal is selected from at least one of magnesium alloy and aluminum alloy; more preferably, the metal is a magnesium alloy.
In some embodiments, the magnesium alloy is selected from at least one of magnesium aluminum alloy, magnesium manganese alloy, magnesium zinc pickaxe alloy; preferably, the magnesium alloy is selected from at least one of magnesium-aluminum alloy and magnesium-manganese alloy; more preferably, the magnesium alloy is a magnesium aluminum alloy.
In some embodiments, the aqueous silicone oil has a viscosity of 500-; preferably, the viscosity of the water-based silicone oil is 600-2000 cps; more preferably, the viscosity of the aqueous silicone oil is 1000 cps.
The viscosity of the water-based silicone oil in the present invention refers to the viscosity at 25 ℃.
In some embodiments, the alkali agent is selected from the group consisting of a combination of one or more of a hydroxide alkali agent, a carbonate alkali agent, ammonia; preferably, the alkali agent is selected from one or more of hydroxide alkali metal agent and carbonate alkali metal agent; more preferably, the alkali agent is a hydroxide alkali metal agent.
In some embodiments, the hydroxide alkali metal reagent is selected from one or a combination of sodium hydroxide, potassium hydroxide, lithium hydroxide; preferably, the hydroxide alkali metal reagent is selected from sodium hydroxide and/or potassium hydroxide; more preferably, the hydroxide alkali metal reagent is sodium hydroxide.
In some embodiments, the carbonate alkali agent is sodium carbonate and/or potassium carbonate; preferably, the carbonate alkali metal agent is sodium carbonate.
In some embodiments, the weight ratio of the aqueous resin, aqueous silicone oil, and alkaline agent is 1: (0.5-1.5): (0.1-1); preferably, the weight ratio of the aqueous resin, the aqueous silicone oil and the alkali agent is 1: (0.8-1.2): (0.2-0.8); more preferably, the weight ratio of the aqueous resin, the aqueous silicone oil and the alkali agent is 1: 1: 0.5.
the applicant finds that after the sealant is coated, the scratch resistance of a surface-treated coating layer can be obviously improved, the hardness of the metal surface is obviously improved, presumably because the adopted waterborne polyurethane and the waterborne silicone oil are compounded, the waterborne polyurethane resin forms a phosphate coating layer on the surface of the magnesium alloy to form a resin macromolecule layer, the applicant finds that a sodium hydroxide solution provides a proper alkaline environment for the sealant, the waterborne polyurethane and the waterborne silicone oil can stably exist to improve the stability of the sealant, and the compounded solution of the waterborne polyurethane and the waterborne silicone oil can enable the surface and the gaps in the coating layer to even permeate into the coating layer; particularly, when the weight ratio of the aqueous resin, the aqueous silicone oil and the alkali agent is 1: (0.5-1.5): (0.1-1), the anionic waterborne polyurethane with the viscosity of 100-500mPa.s and the waterborne silicone oil with the viscosity of 500-5000cps are selected to ensure that the hardness of the metal surface reaches the optimum, and the products are directly collided with each other and hardly cause scratches.
The second aspect of the invention provides a preparation method of the sealant, which at least comprises the steps of adding a solvent into a container, further adding an alkali reagent, water-based resin, water-based silicone oil and fatty alcohol polyether, and stirring to obtain the sealant.
In some embodiments, the preparation method of the sealant at least comprises the steps of weighing the components, adding the solvent into a container, adding the alkali reagent, stirring and dissolving uniformly, adding the water-based resin and the water-based silicone oil, stirring and dissolving uniformly, finally adding the fatty alcohol polyether, raising the temperature to 30-70 ℃, and stirring uniformly to obtain the sealant.
In some preferred embodiments, the preparation method of the sealant at least comprises the steps of weighing the components, adding the solvent into a container, adding the alkali reagent, stirring and dissolving uniformly, adding the water-based resin and the water-based silicone oil, stirring and dissolving uniformly, finally adding the fatty alcohol polyether, raising the temperature to 40-60 ℃, and stirring uniformly to obtain the sealant.
In some more preferred embodiments, the preparation method of the sealant at least comprises the steps of weighing the components, adding the solvent into a container, adding the alkali reagent, stirring and dissolving uniformly, adding the water-based resin and the water-based silicone oil, stirring and dissolving uniformly, finally adding the fatty alcohol polyether, raising the temperature to 50 ℃, and stirring uniformly to obtain the sealant.
The third aspect of the invention provides a using method of the sealant, which at least comprises the steps of washing a metal product subjected to membrane treatment with overflow water, soaking the metal product in the sealant for 30-120 seconds at the treatment temperature of 20-80 ℃, and baking the metal product in an oven after the overflow water is washed.
In some preferred embodiments, the use method of the blocking agent at least comprises the steps of washing the metal product subjected to the film treatment with overflow water, placing the metal product into the blocking agent for soaking treatment, wherein the treatment temperature is 20-80 ℃, the treatment time is 30-120 seconds, and after washing with overflow water, placing the metal product into an oven with the temperature of 100-180 ℃ for baking for 5-25 minutes.
In some more preferable embodiments, the use method of the sealant at least comprises the steps of washing the metal product subjected to the film treatment with overflow water, soaking the metal product in the sealant for 40-100 seconds at the treatment temperature of 30-60 ℃, and baking the metal product in an oven at the temperature of 120-150 ℃ for 10-20 minutes after the overflow water is washed.
In some more preferred embodiments, the use method of the blocking agent at least comprises the steps of washing the metal product subjected to the film treatment with overflow water, soaking the metal product in the blocking agent for 60 seconds at the treatment temperature of 45 ℃, and baking the metal product in an oven at the temperature of 130 ℃ for 15 minutes after the overflow water is washed.
The film treatment is phosphate film treatment; the phosphate coating treatment is a technique well known to those skilled in the art.
The applicant also finds that the surface hardness of the magnesium alloy is improved after the coating of the sealant and the high-temperature treatment, although the magnesium alloy adopts the water-based component, is non-toxic and environment-friendly, can prevent the pollution of water, sweat, fingerprints and the like on the surface of the magnesium alloy, has excellent fingerprint resistance effect and better corrosion resistance, presumably because the magnesium metal in the magnesium alloy can induce the structural change of the water-based polyurethane and the water-based silicone oil after the high-temperature treatment due to better chemical activity, so that a high polymer layer formed on the surface of a skin layer is not only more compact but also has better hydrophobicity; the applicant unexpectedly finds that after the magnesium alloy subjected to the coating layer treatment is soaked in the sealant, no color change occurs during high-temperature baking, the yellowing resistance of the coating layer can be obviously improved, the magnesium alloy product is prevented from yellowing in the baking and hot shaping processing processes, and the coating layer is transparent and has no influence on the appearance of the magnesium alloy product.
The present invention is described in detail below with reference to examples, which are provided for the purpose of further illustration only and are not to be construed as limiting the scope of the present invention, and the insubstantial modifications and adaptations thereof by those skilled in the art based on the teachings of the present invention will still fall within the scope of the present invention.
Example 1
A high-hardness scratch-resistant fingerprint-resistant sealant for a metal surface comprises raw materials of water-based resin, water-based silicone oil, fatty alcohol polyether, an alkali reagent and a solvent;
the preparation method of the sealant comprises the steps of weighing the components, adding a solvent into a container, adding an alkali reagent, stirring and dissolving uniformly, adding the water-based resin and the water-based silicone oil, stirring and dissolving uniformly, adding the fatty alcohol polyether, raising the temperature to 50 ℃, and stirring uniformly to obtain the sealant;
the weight ratio of the water-based resin to the fatty alcohol polyether is 1: 0.05; the adding mass of the solvent is 94.9 percent of the total mass of the raw materials; the water-based resin is anionic water-based polyurethane resin, has the viscosity of 300mPa.s, is purchased from Anhui great huatai new material Co., Ltd, and has the model number of AH-1605B; the water-based silicone oil is purchased from Huagu organosilicon Co Ltd of the mountain of Buddha, and the model is 1000; the alkali reagent is sodium hydroxide; the weight ratio of the water-based resin to the water-based silicone oil to the alkali reagent is 1: 1: 0.5.
example 2
A high-hardness scratch-resistant fingerprint-resistant sealant for a metal surface comprises raw materials of water-based resin, water-based silicone oil, fatty alcohol polyether, an alkali reagent and a solvent;
the preparation method of the sealant comprises the steps of weighing the components, adding a solvent into a container, adding an alkali reagent, stirring and dissolving uniformly, adding the water-based resin and the water-based silicone oil, stirring and dissolving uniformly, adding the fatty alcohol polyether, raising the temperature to 30 ℃, and stirring uniformly to obtain the sealant;
the weight ratio of the water-based resin to the fatty alcohol polyether is 1: 0.01; the adding mass of the solvent is 80% of the total mass of the raw materials; the water-based resin is anionic water-based polyurethane resin, has the viscosity of 100mPa.s, is purchased from Anhui great huatai new material Co., Ltd, and has the model number of AH-1605B; (ii) a The water-based silicone oil is purchased from Zhongxing organic silicon technology Co., Ltd, Laiyang, and has a product number of ZX-102; the alkali reagent is 30 wt% ammonia water; the weight ratio of the water-based resin to the water-based silicone oil to the alkali reagent is 1: 0.5: 0.1.
example 3
A high-hardness scratch-resistant fingerprint-resistant sealant for a metal surface comprises raw materials of water-based resin, water-based silicone oil, fatty alcohol polyether, an alkali reagent and a solvent;
the preparation method of the sealant comprises the steps of weighing the components, adding a solvent into a container, adding an alkali reagent, stirring and dissolving uniformly, adding the water-based resin and the water-based silicone oil, stirring and dissolving uniformly, adding the fatty alcohol polyether, raising the temperature to 70 ℃, and stirring uniformly to obtain the sealant;
the weight ratio of the water-based resin to the fatty alcohol polyether is 1: 0.1; the adding mass of the solvent is 98% of the total mass of the raw materials; the water-based resin is anionic water-based polyurethane resin, has the viscosity of 500mPa.s, is purchased from Anhui great huatai new material Co., Ltd, and has the model of AH-0201D; the water-based silicone oil is purchased from Huagu organic silicon Co Ltd of the mountain of Buddha, and the model is 5000; the alkali reagent is potassium hydroxide; the weight ratio of the water-based resin to the water-based silicone oil to the alkali reagent is 1: 1.5: 1.
example 4
A high-hardness scratch-resistant fingerprint-resistant sealant for a metal surface comprises raw materials of water-based resin, water-based silicone oil, fatty alcohol polyether, an alkali reagent and a solvent;
the preparation method of the sealant comprises the steps of weighing the components, adding a solvent into a container, adding an alkali reagent, stirring and dissolving uniformly, adding the water-based resin and the water-based silicone oil, stirring and dissolving uniformly, adding the fatty alcohol polyether, raising the temperature to 40 ℃, and stirring uniformly to obtain the sealant;
the weight ratio of the water-based resin to the fatty alcohol polyether is 1: 0.04; the adding mass of the solvent is 90% of the total mass of the raw materials; the water-based resin is anionic water-based polyurethane resin, has the viscosity of 200mPa.s, is purchased from Anhui great huatai new material Co., Ltd, and has the model of AH-1502E; the water-based silicone oil is purchased from Huagu organosilicon Co Ltd of the mountain of Buddha, and the model is 600; the alkali reagent is sodium carbonate; the weight ratio of the water-based resin to the water-based silicone oil to the alkali reagent is 1: 0.8: 0.2.
example 5
A high-hardness scratch-resistant fingerprint-resistant sealant for a metal surface comprises raw materials of water-based resin, water-based silicone oil, fatty alcohol polyether, an alkali reagent and a solvent;
the preparation method of the sealant comprises the steps of weighing the components, adding a solvent into a container, adding an alkali reagent, stirring and dissolving uniformly, adding the water-based resin and the water-based silicone oil, stirring and dissolving uniformly, adding the fatty alcohol polyether, raising the temperature to 60 ℃, and stirring uniformly to obtain the sealant;
the weight ratio of the water-based resin to the fatty alcohol polyether is 1: 0.06; the adding mass of the solvent is 96% of the total mass of the raw materials; the waterborne resin is waterborne acrylic resin with the viscosity of 400mPa.s, is purchased from Shandong Haoyao new material Co., Ltd and has the brand of HY; the water-based silicone oil is purchased from Huagu organosilicon Co Ltd of the mountain of Buddha, and the model is 2000; the alkali reagent is potassium carbonate; the weight ratio of the water-based resin to the water-based silicone oil to the alkali reagent is 1: 1.2: 0.8.
example 6
A high-hardness scratch-resistant fingerprint-resistant sealant for metal surfaces comprises raw materials of water-based silicone oil, fatty alcohol polyether, an alkali reagent and a solvent;
the preparation method of the sealant comprises the steps of weighing the components, adding a solvent into a container, adding an alkali reagent, stirring and dissolving uniformly, adding water-based silicone oil, stirring and dissolving uniformly, adding fatty alcohol polyether, raising the temperature to 50 ℃, and stirring uniformly to obtain the sealant;
the weight ratio of the water-based silicone oil to the fatty alcohol polyether is 1: 0.05; the adding mass of the solvent is 94.9 percent of the total mass of the raw materials; the water-based silicone oil is purchased from Huagu organosilicon Co Ltd of the mountain of Buddha, and the model is 1000; the alkali reagent is sodium hydroxide; the weight ratio of the water-based silicone oil to the alkali reagent is 1: 0.5.
example 7
A high-hardness scratch-resistant fingerprint-resistant sealant for metal surfaces comprises raw materials of water-based resin, fatty alcohol polyether, an alkali reagent and a solvent;
the preparation method of the sealant comprises the steps of weighing the components, adding a solvent into a container, adding an alkali reagent, stirring and dissolving uniformly, adding a water-based resin, stirring and dissolving uniformly, adding fatty alcohol polyether, raising the temperature to 50 ℃, and stirring uniformly to obtain the sealant;
the weight ratio of the water-based resin to the fatty alcohol polyether is 1: 0.05; the adding mass of the solvent is 94.9 percent of the total mass of the raw materials; the water-based resin is anionic water-based polyurethane resin, has the viscosity of 300mPa.s, is purchased from Anhui great huatai new material Co., Ltd, and has the model number of AH-1605B; the alkali reagent is sodium hydroxide; the weight ratio of the aqueous resin to the alkali agent is 1: 0.5.
example 8
A high-hardness scratch-resistant fingerprint-resistant sealant for a metal surface comprises raw materials of water-based resin, water-based silicone oil, fatty alcohol polyether and a solvent;
the preparation method of the sealant comprises the steps of weighing the components, adding a solvent into a container, adding the water-based resin and the water-based silicone oil, stirring and dissolving uniformly, adding the fatty alcohol polyether, raising the temperature to 50 ℃, and stirring uniformly to obtain the sealant;
the weight ratio of the water-based resin to the fatty alcohol polyether is 1: 0.05; the adding mass of the solvent is 94.9 percent of the total mass of the raw materials; the water-based resin is anionic water-based polyurethane resin, has the viscosity of 300mPa.s, is purchased from Anhui great huatai new material Co., Ltd, and has the model number of AH-1605B; the water-based silicone oil is purchased from Huagu organosilicon Co Ltd of the mountain of Buddha, and the model is 1000; the weight ratio of the water-based resin to the water-based silicone oil is 1: 1.
example 9
A high-hardness scratch-resistant fingerprint-resistant sealant for a metal surface comprises raw materials of water-based resin, water-based silicone oil, fatty alcohol polyether, an alkali reagent and a solvent;
the preparation method of the sealant comprises the steps of weighing the components, adding a solvent into a container, adding an alkali reagent, stirring and dissolving uniformly, adding the water-based resin and the water-based silicone oil, stirring and dissolving uniformly, adding the fatty alcohol polyether, raising the temperature to 50 ℃, and stirring uniformly to obtain the sealant;
the weight ratio of the water-based resin to the fatty alcohol polyether is 1: 0.05; the adding mass of the solvent is 94.9 percent of the total mass of the raw materials; the water-based resin is cation water-based polyurethane resin, the viscosity of the water-based resin is 300mPa.s, the water-based resin is purchased from Anhui Dahuatai new material Co., Ltd, and the model is AH-1802A; the water-based silicone oil is purchased from Huagu organosilicon Co Ltd of the mountain of Buddha, and the model is 1000; the alkali reagent is sodium hydroxide; the weight ratio of the water-based resin to the water-based silicone oil to the alkali reagent is 1: 1: 0.5.
example 10
A high-hardness scratch-resistant fingerprint-resistant sealant for a metal surface comprises raw materials of water-based resin, water-based silicone oil, fatty alcohol polyether, an alkali reagent and a solvent;
the preparation method of the sealant comprises the steps of weighing the components, adding a solvent into a container, adding an alkali reagent, stirring and dissolving uniformly, adding the water-based resin and the water-based silicone oil, stirring and dissolving uniformly, adding the fatty alcohol polyether, raising the temperature to 50 ℃, and stirring uniformly to obtain the sealant;
the weight ratio of the water-based resin to the fatty alcohol polyether is 1: 0.05; the adding mass of the solvent is 94.9 percent of the total mass of the raw materials; the waterborne resin is waterborne phenolic resin with the viscosity of 300mPa.s, and the brand is HY by Shandong Haoyao new material Co.Ltd; the water-based silicone oil is purchased from Zhongxing organic silicon science and technology limited company in Laiyang, and the model is ZX-102; the alkali reagent is sodium hydroxide; the weight ratio of the water-based resin to the water-based silicone oil to the alkali reagent is 1: 3: 2.
performance testing
The method of use of the sealants prepared in examples 1 to 10: and (3) washing the metal product subjected to the skin membrane treatment with overflow water, putting the metal product into the sealing agent for soaking treatment, wherein the treatment temperature is 45 ℃, the treatment time is 60 seconds, washing the metal product with overflow water, and putting the metal product into a 130 ℃ oven for baking for 15 minutes.
1. The hardness testing method comprises the following steps: testing according to GB/T4340.1-1999;
2. the fingerprint resistance testing method comprises the following steps: pressing the surface of the processing plate by using a finger to observe the trace of the fingerprint on the processing plate by naked eyes; the 10-grade shows that the trace is completely absent and the effect is optimal; grade 1 has obvious residual traces and the worst effect, and is divided into 10 grades in sequence; the fingerprint resistance effect after using the sealant of example 1 is shown in FIG. 2;
3. the salt spray test method comprises the following steps: cleaning a product, putting the product into a test box, setting parameters, continuously spraying the product for 24 hours at 47 ℃ under the pressure of 1MPa by using a sodium chloride solution with the solution of 5 wt% and the amount of 5mL/h of spray sedimentation, taking out the product after the test, washing the test product for 5 minutes by using flowing water, rinsing the test product by using distilled water, drying the test product at 80 ℃ for 30 minutes, judging that the standard is no abnormal phenomena such as air rise, oxidation, corrosion, rusting and the like, and classifying into three grades of high, medium and low; the fingerprint resistance effect after using the sealant of example 1 is shown in FIG. 4;
4. high temperature resistance, hydrophobicity, fingerprint resistance: after the magnesium alloy is treated by using the sealant prepared in example 1, the high temperature resistance is as follows: the discoloration of the magnesium alloy which is not sealed and sealed is observed when the magnesium alloy is placed at the high temperature of 300 ℃ for 24 hours, as shown in the attached figures 5 and 6; hydrophobicity: observing the hydrophobic condition as shown in the attached figure; the test results are shown in FIG. 3.
5. Scratch resistance test: after scratching the product prepared using the same force, the test results are shown in fig. 7, and it can be seen that the left-hand product, after being closed, did not scratch the substrate, whereas the product, after not being closed, had clearly exposed the silvery white substrate after scratching.
Table 1 shows the hardness, fingerprint resistance, and salt spray resistance test results for the sealants described in examples 1-10.
TABLE 1
The foregoing examples are illustrative only, and serve to explain some of the features of the present disclosure. The appended claims are intended to claim as broad a scope as is contemplated, and the examples presented herein are merely illustrative of selected implementations in accordance with all possible combinations of examples. Accordingly, it is applicants' intention that the appended claims are not to be limited by the choice of examples illustrating features of the invention. And that advances in science and technology will result in possible equivalents or sub-substitutes not currently contemplated for reasons of inaccuracy in language representation, and such changes should also be construed where possible to be covered by the appended claims.
Claims (3)
1. The high-hardness scratch-resistant fingerprint-resistant sealant for the metal surface is characterized by comprising the following raw materials of water-based resin, water-based silicone oil, fatty alcohol polyether, an alkali reagent and a solvent; the weight ratio of the water-based resin to the water-based silicone oil to the alkali reagent is 1: (0.5-1.5): (0.1-1);
the weight ratio of the water-based resin to the fatty alcohol polyether is 1: 0.05;
the aqueous resin is anionic aqueous polyurethane, and the viscosity of the anionic aqueous polyurethane is 300 mPa.s;
the metal is a magnesium alloy;
the viscosity of the water-based silicone oil is 500-5000 cps;
the alkali reagent is a hydroxide alkali metal reagent, and the hydroxide alkali metal reagent is sodium hydroxide.
2. A method for preparing the sealant according to claim 1, comprising the steps of adding a solvent into a container, further adding an alkali agent, an aqueous resin, an aqueous silicone oil and a fatty alcohol polyether, and stirring to obtain the sealant.
3. The use method of the sealant according to claim 1 or 2, characterized by comprising the steps of washing a metal product subjected to film treatment with overflow water, soaking the metal product in the sealant for 30-120 seconds at a treatment temperature of 20-80 ℃, and baking the metal product in an oven after the overflow water is washed.
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