CN117067719A - Stainless steel composite board and manufacturing method thereof - Google Patents
Stainless steel composite board and manufacturing method thereof Download PDFInfo
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- CN117067719A CN117067719A CN202311065707.6A CN202311065707A CN117067719A CN 117067719 A CN117067719 A CN 117067719A CN 202311065707 A CN202311065707 A CN 202311065707A CN 117067719 A CN117067719 A CN 117067719A
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- 239000010935 stainless steel Substances 0.000 title claims abstract description 91
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 91
- 239000002131 composite material Substances 0.000 title claims abstract description 43
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 30
- 238000002161 passivation Methods 0.000 claims abstract description 64
- 239000000758 substrate Substances 0.000 claims abstract description 63
- 239000011527 polyurethane coating Substances 0.000 claims abstract description 54
- 238000000576 coating method Methods 0.000 claims abstract description 39
- 239000011248 coating agent Substances 0.000 claims abstract description 38
- 230000001681 protective effect Effects 0.000 claims abstract description 15
- 238000004140 cleaning Methods 0.000 claims abstract description 10
- 238000010030 laminating Methods 0.000 claims abstract description 4
- 239000000243 solution Substances 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 10
- 238000005507 spraying Methods 0.000 claims description 10
- 238000005406 washing Methods 0.000 claims description 9
- 239000004814 polyurethane Substances 0.000 claims description 8
- 229920002635 polyurethane Polymers 0.000 claims description 8
- 239000000919 ceramic Substances 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 229910052582 BN Inorganic materials 0.000 claims description 6
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims description 6
- 239000012670 alkaline solution Substances 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 5
- 239000003792 electrolyte Substances 0.000 claims description 5
- 238000013329 compounding Methods 0.000 claims description 4
- 239000003973 paint Substances 0.000 claims description 4
- 229920000642 polymer Polymers 0.000 claims description 4
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 3
- ZOXJGFHDIHLPTG-BJUDXGSMSA-N Boron-10 Chemical group [10B] ZOXJGFHDIHLPTG-BJUDXGSMSA-N 0.000 claims description 3
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 3
- 239000004917 carbon fiber Substances 0.000 claims description 3
- 239000002270 dispersing agent Substances 0.000 claims description 3
- 239000011810 insulating material Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 239000005011 phenolic resin Substances 0.000 claims description 3
- 229920001568 phenolic resin Polymers 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 238000009413 insulation Methods 0.000 abstract description 22
- 239000010410 layer Substances 0.000 description 87
- 239000012774 insulation material Substances 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 239000011241 protective layer Substances 0.000 description 3
- 230000001154 acute effect Effects 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 238000005238 degreasing Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- -1 410 Substances 0.000 description 1
- 239000010965 430 stainless steel Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 230000002421 anti-septic effect Effects 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000007127 saponification reaction Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
Classifications
-
- 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
- C09D161/00—Coating compositions based on condensation polymers of aldehydes or ketones; Coating compositions based on derivatives of such polymers
- C09D161/04—Condensation polymers of aldehydes or ketones with phenols only
- C09D161/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
- B32B15/085—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyolefins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/18—Layered products comprising a layer of metal comprising iron or steel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
-
- 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
-
- 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
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/26—Polymeric coating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/304—Insulating
-
- 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
- C08K3/38—Boron-containing compounds
- C08K2003/382—Boron-containing compounds and nitrogen
- C08K2003/385—Binary compounds of nitrogen with boron
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Laminated Bodies (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The utility model discloses a stainless steel composite board and a manufacturing method thereof. The manufacturing method comprises the following steps: s1, selecting a stainless steel plate with a preset thickness as a substrate layer, and cleaning the front surface and the back surface of the substrate layer; s2, the back surface of the substrate layer after the cleaning treatment is not treated any more, and the front surface is subjected to passivation treatment by using a passivation solution; s3, coating a first nano oily polyurethane coating on the passivation layer, and curing to form a first nano oily polyurethane coating; s4, coating a second nano oily polyurethane coating on the first nano oily polyurethane coating, and curing to form a second nano oily polyurethane coating; and S5, laminating a PE protective film on the second nano oily polyurethane coating to form a PE protective film layer. The precoating is only carried out after the front passivation treatment of the stainless steel substrate layer, so that the manufacturing cost is lower, and the thickness of the plate is thinner and lighter. According to the use scene, the passivation device has a heat insulation function during passivation treatment, and a user can select the passivation device according to the use requirement, so that the passivation device is high in applicability.
Description
Technical Field
The utility model relates to the technical field of manufacturing of stainless steel composite plates, in particular to a stainless steel composite plate and a manufacturing method thereof.
Background
The metal plate has wide application in industry and life, and needs to be used in the fields of automobiles, household appliances, high-grade furniture, kitchen equipment, industry, civil buildings and the like; generally, metals are required to be coated with a protective layer on their surfaces before they can be used as a finished product. For example, CN217803723U discloses a composite metal plate, which is provided with a protective film layer, a nano water-based polyurethane paint layer, a nano polyurethane primer layer, a first polymer heat insulation layer, a metal substrate layer, a second polymer heat insulation layer and a water-based anti-corrosion protective layer from top to bottom in sequence; the protective film layer is combined with the nano water-based polyurethane paint layer in a pressing mode. Wherein the metal substrate can be an aluminum plate, a stainless steel plate or a stainless iron plate. The specification also discloses that each coating is formed by coating. The pretreatment of the surface of the metal substrate in the above patent is only cleaning treatment, but for the stainless steel substrate, because the surface is smooth, the coating needs to be directly coated on the surface of the stainless steel substrate, and the coating has higher requirements, enterprises need to specially develop the coating which can be directly coated on the surface of the stainless steel substrate, which inevitably increases the research and development cost of the enterprises, and the binding force between the directly coated coating, such as the aqueous polyurethane paint, and the surface of the stainless steel substrate is smaller, and the coating is easy to fall off from the stainless steel substrate in the subsequent processing and using processes, thereby influencing the service life of the composite board. The utility model provides a novel manufacturing method of a stainless steel composite board.
Disclosure of Invention
In view of at least one of the above problems, an object of the present utility model is to provide a stainless steel composite board and a method for manufacturing the same.
The technical scheme of the utility model is as follows:
an object of the present utility model is to provide a method for manufacturing a stainless steel composite plate, comprising the steps of:
s1, selecting a stainless steel plate with a preset thickness as a substrate layer, and cleaning the front surface and the back surface of the substrate layer;
s2, the back surface of the cleaned substrate layer is not treated any more, and passivation liquid is adopted for passivation treatment on the front surface to form a passivation layer;
s3, coating a first nano oily polyurethane coating on the passivation layer, and curing to form a first nano oily polyurethane coating;
s4, coating a second nano oily polyurethane coating on the first nano oily polyurethane coating, and curing to form a second nano oily polyurethane coating;
and S5, laminating a PE protective film on the second nano oily polyurethane coating to form a PE protective film layer, and finishing the manufacturing of the stainless steel composite board.
Preferably, in step S2, a thermal insulation coating formed by compounding a passivation solution and a thermal insulation material is used in the passivation treatment to form a thermal insulation passivation layer on the front surface of the substrate layer.
Preferably, the heat insulation material is a high polymer heat insulation coating prepared by taking resin and infrared ceramic particles as main raw materials.
Preferably, the heat-insulating coating comprises the following components in percentage by mass:
50-60 parts of phenolic resin, 10-20 parts of infrared ceramic particles, 3-7 parts of carbon fibers, 2-5 parts of dispersing agent, 1-6 parts of boron nitride or boron nitride and 10-20 parts of passivation solution.
Preferably, the step of the cleaning process includes:
s11, spraying alkaline solution to remove oil on the surface of the stainless steel substrate layer;
s12, placing the deoiled substrate layer in an electrolytic tank with electrolyte for electrolytic treatment so as to clean the surface of the substrate layer;
s13, spraying and washing the electrolyzed substrate layer with clear water;
s14, drying the substrate layer after washing.
Preferably, the first nano oily polyurethane coating and the second nano oily polyurethane coating are nano oily polyurethane coating prepared by taking nano oily polyurethane as a main material.
Preferably, the substrate layer is made of 2-series stainless steel or 3-series stainless steel or 4-series stainless steel.
Preferably, the thickness of the substrate layer is 0.2-1.0mm.
It is still another object of the present utility model to provide a stainless steel composite panel manufactured by the manufacturing method as set forth in any one of the above.
Compared with the prior art, the utility model has the advantages that:
the manufacturing method of the stainless steel composite board adopts the passivation treatment on the front surface of the stainless steel base material layer, namely the outer side surface during use, and then the precoat layer is arranged, so that the combination of the stainless steel base material layer and the precoat layer is firmer, the manufacturing cost is lower, and the thickness of the board is thinner and lighter. In addition, on the premise of meeting the requirements of lower cost and thinner and lighter plates, a passivation layer with a heat insulation function is formed during front passivation treatment according to the use scene of the composite plate, such as devices (such as automobiles and kitchen utensils) which are required to be used in an outdoor environment or a high-temperature environment, so that the heat insulation effect of the composite plate is improved; in the case of devices (such as refrigerators, washing machines, etc.) which do not need to be used in an outdoor environment, i.e., in an indoor environment, there is no need to provide a heat insulation function in the passivation layer formed on the front surface; and then can further reduce the manufacturing cost of enterprise, also can reduce user's use cost for the user can make the selection according to the user demand, and practicality and suitability are stronger. The oily polyurethane coating is adopted to replace the aqueous polyurethane coating, the coating which can be directly coated does not need to be specially developed aiming at the stainless steel substrate, and the stainless steel surface can be firmly combined with the coating by cleaning and passivating the stainless steel substrate surface, and meanwhile, the two layers of oily polyurethane coatings are arranged, so that the strength of the coating on the front surface of the stainless steel is further improved, and the service life of the stainless steel composite board is further prolonged. The nanometer oily polyurethane coating can be matt black or other various colors, and makes up the market gap that the precoat in the existing composite board has no black.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, in which the drawings are only some embodiments of the present utility model, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a stainless steel composite panel according to example 2 of the present utility model;
fig. 2 is a schematic structural view of example 3 of the stainless steel composite panel according to the present utility model.
Wherein:
1. a stainless steel substrate layer; 2. a first nano oily polyurethane coating; 3. a second nano oily polyurethane coating; 4. a PE protective film layer; 5. a passivation layer; 5', a heat insulation passivation layer.
Detailed Description
The objects, technical solutions and advantages of the present utility model will become more apparent by the following detailed description of the present utility model with reference to the accompanying drawings. It should be understood that the description is only illustrative and is not intended to limit the scope of the utility model. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the present utility model.
Example 1
The embodiment provides a manufacturing method of a stainless steel composite board, which comprises the following steps:
s1, selecting a stainless steel plate with a preset thickness as a substrate layer, and cleaning the front surface and the back surface of the substrate layer;
s2, the back surface of the cleaned substrate layer is not treated any more, and passivation liquid is adopted for passivation treatment on the front surface to form a passivation layer;
s3, coating a first nano oily polyurethane coating on the passivation layer, and curing to form a first nano oily polyurethane coating;
s4, coating a second nano oily polyurethane coating on the first nano oily polyurethane coating, and curing to form a second nano oily polyurethane coating;
and S5, laminating a PE protective film on the second nano oily polyurethane coating to form a PE protective film layer, and finishing the manufacturing of the stainless steel composite board.
According to some preferred embodiments of the present utility model, in step S2, a thermal insulation coating formed by compounding a passivation solution with a thermal insulation material is used in the passivation process to form a thermal insulation passivation layer on the front surface of the substrate layer. According to the embodiment of the utility model, the passivation solution and the heat insulation material are compounded and coated on the front surface of the stainless steel substrate layer 1, so that a heat insulation passivation layer 5' is formed on the front surface of the stainless steel substrate layer 1, and the stainless steel composite board has a good heat insulation function. According to some preferred embodiments of the present utility model, the heat insulating material is a polymeric heat insulating coating prepared from resin and infrared ceramic particles as main raw materials. Specifically, the heat-insulating coating comprises the following components in percentage by mass: 50-60 parts of phenolic resin, 10-20 parts of infrared ceramic particles, 3-7 parts of carbon fibers, 2-5 parts of dispersing agent, 1-6 parts of boron nitride or boron nitride and 10-20 parts of passivation solution. The addition of the infrared ceramic particles can improve the antibacterial and antiseptic effects. It should be noted that the passivation solution is a passivation solution for stainless steel, which is conventional in the existing market, and is not specifically described and limited, and meanwhile, the compounding ratio of the passivation solution and the heat insulation material is not limited to the above, for example, the passivation solution accounts for ten to fifty percent of the weight of the whole heat insulation coating, and specifically, the proportion of the passivation solution in the heat insulation coating can be selected by a person skilled in the art according to passivation requirements and actual stainless steel materials. In the embodiment, the passivation solution and the heat-insulating coating are compounded, then coated and cured on the front surface of the stainless steel substrate layer 1, and the passivation step and the heat-insulating layer coating step are combined into a whole, so that the passivation layer has a heat-insulating function, the manufacturing period is saved, and the production efficiency is greatly improved. It should be noted that, after the heat-insulating coating is applied, drying is required, and a specific drying process is not described and limited, and is an existing conventional process, which is easily known and implemented by those skilled in the art. The thickness of the insulating layer 5 is not described or limited, and a person skilled in the art can select a design according to the insulating requirement.
The material of the stainless steel substrate layer may be selected from 2 series stainless steel such as 201, 202 stainless steel and the like commonly found in the market, 3 series stainless steel such as 301, 304, 305, 309, 347 stainless steel and the like commonly found in the market, or 4 series stainless steel such as 410, 430 stainless steel and stainless iron and the like commonly found in the market. The choice of particular person skilled in the art will depend on the use of the official product. The thickness of the stainless steel substrate layer is not particularly limited, and may be selected to be 0.2-1.0mm, and a person skilled in the art may select the design according to the actual requirements of the final product.
According to some preferred embodiments of the utility model, the step of cleaning treatment comprises:
s11, spraying alkaline solution to remove oil on the surface of the stainless steel substrate layer;
s12, placing the deoiled substrate layer in an electrolytic tank with electrolyte for electrolytic treatment so as to clean the surface of the substrate layer;
s13, spraying and washing the electrolyzed substrate layer with clear water;
s14, drying the substrate layer after washing. The components of the alkaline solution are not particularly limited, and those skilled in the art can select an alkaline solution for degreasing, which is conventionally used in the prior art, and achieve the purpose of degreasing by saponification reaction of the alkaline solution with grease. In the embodiment of the utility model, a spraying mode is adopted, the spraying direction is preferably an acute angle smaller than or equal to 90 degrees with the surface of the stainless steel substrate layer, the specific angle is not limited, and the falling of grease is more facilitated. The electrolyte composition is not described or limited, and is a conventional electrolyte composition for stainless steel surface treatment well known to those skilled in the art. The water washing is also preferably performed by spraying and the spraying mode forms an acute angle with the surface of the stainless steel substrate layer.
According to some preferred embodiments of the present utility model, the first nano oily polyurethane coating 2 and the second nano oily polyurethane coating 3 are nano oily polyurethane coatings prepared by using nano oily polyurethane as a main material. The specific formulation is not described or defined in detail and is a conventional oily polyurethane coating on the existing market. The second nano oily polyurethane coating 2 serves as a top coat layer, and the first nano oily polyurethane coating 3 serves as a primer layer, and preferably, the thickness of the second nano oily polyurethane coating 3 is preferably greater than or equal to the thickness of the first nano oily polyurethane coating 2. The specific thickness is not limited, for example, 1 to 5. Mu.m. It should be noted that the nano oily polyurethane coating layer herein includes the first nano oily polyurethane coating layer 2 and the second nano oily polyurethane protrusion 3, which are optional but not limited to matte black, that is, can be various other colors conventionally used in the market. Preferably black, and makes up the market vacancy of no black precoat in the existing composite board.
Example 2
The stainless steel composite plate provided by the embodiment is manufactured by adopting the manufacturing method of the embodiment 1. Specifically, referring to fig. 1, the stainless steel composite board of the embodiment of the utility model is suitable for being used in indoor environments with low heat insulation requirements, such as refrigerators, washing machines and the like. Specifically, the protective film comprises a stainless steel substrate layer 1, a passivation layer 5, a first nano oily polyurethane coating 2, a second nano oily polyurethane coating 3 and a PE protective film layer 4. For convenience of description, the two surfaces in the thickness direction of the stainless steel substrate layer 1 in this embodiment are respectively a front surface (i.e., the upper surface of the stainless steel substrate layer 1 shown in fig. 1 is not labeled) and a back surface (i.e., the lower surface of the stainless steel substrate layer 1 shown in fig. 1 is not labeled). The front surface is the surface facing the outside or being easier to contact with the outside when being used as a formal product; in the same way, the reverse side is the side which faces to the inner side or is not easy to contact with the outside when being used as a formal product. The passivation layer 5, the first nano oily polyurethane coating 2, the second nano oily polyurethane coating 3 and the PE protective film layer 4 are sequentially arranged on the front surface of the stainless steel substrate layer 1 from inside to outside, namely from bottom to top as shown in fig. 1, and the front surface is easier to contact with the outside, and the back surface is not easy to contact with the outside, so that the passivation solution is only adopted on the front surface for passivation treatment, and the functional coating and the protective layer are arranged, and the purpose of adopting the passivation solution treatment is to enable the front surface of the stainless steel substrate layer 1 to form the passivation layer 5, so that the coating of the coating and the combination of the coating and the stainless steel substrate layer 1 are more facilitated. Thus, on one hand, the thickness of the stainless steel composite board is reduced to reduce the weight of the stainless steel composite board, and on the other hand, the manufacturing cost can be reduced. The oily polyurethane coating is adopted, the bonding strength with the stainless steel substrate layer 1 is higher, the service life of the coating is longer, and the two layers of coatings are arranged, so that the service life of the coating can be further prolonged, and the service life of the stainless steel composite board is further prolonged.
Example 3
A stainless steel composite plate of this example was produced by the production method of example 1. In particular, referring to fig. 2, the stainless steel composite panel of the present embodiment is suitable for use in environments where thermal insulation requirements are relatively high, such as outdoor environments (e.g., automobiles). Specifically, the difference from embodiment 2 is that, during passivation treatment, a passivation solution and a heat insulation material are compounded to form a heat insulation coating to be coated on the front surface of the stainless steel substrate layer 1, so that a layer of heat insulation passivation layer 5 'is formed on the front surface of the stainless steel substrate layer 1, that is, the stainless steel composite board in this embodiment is further provided with a heat insulation passivation layer 5' (different from the passivation layer 5 in embodiment 2) between the front surface of the stainless steel substrate layer 1 and the first nano oily polyurethane coating 2. That is, the stainless steel composite board of the present embodiment is provided with the heat insulation passivation layer 5', the first nano polyurethane coating 2, the second nano oily polyurethane coating 3 and the PE protective film layer 4 in this order from inside to outside on the front surface of the stainless steel base material layer 1, i.e., from bottom to top as shown in fig. 2. That is, the stainless steel composite panel according to the embodiment of the present utility model has a heat insulating function as compared with the stainless steel composite panel according to the embodiment 2.
In embodiments 1 to 3, since the back surface is not required to be provided with a coating layer when passivation is performed, protection treatment such as shielding or immersion of the back surface in a passivation solution with the front surface facing downward is required to avoid passivation of the back surface. In addition, the thicknesses shown in the respective layers shown in fig. 1 and 2 do not represent actual thicknesses thereof.
It is to be understood that the above-described embodiments of the present utility model are merely illustrative of or explanation of the principles of the present utility model and are in no way limiting of the utility model. Accordingly, any modification, equivalent replacement, improvement, etc. made without departing from the spirit and scope of the present utility model should be included in the scope of the present utility model. Furthermore, the appended claims are intended to cover all such changes and modifications that fall within the scope and boundary of the appended claims, or equivalents of such scope and boundary.
Claims (9)
1. The manufacturing method of the stainless steel composite board is characterized by comprising the following steps of:
s1, selecting a stainless steel plate with a preset thickness as a substrate layer, and cleaning the front surface and the back surface of the substrate layer;
s2, the back surface of the cleaned substrate layer is not treated any more, and passivation liquid is adopted for passivation treatment on the front surface to form a passivation layer;
s3, coating a first nano oily polyurethane coating on the passivation layer, and curing to form a first nano oily polyurethane coating;
s4, coating a second nano oily polyurethane coating on the first nano oily polyurethane coating, and curing to form a second nano oily polyurethane coating;
and S5, laminating a PE protective film on the second nano oily polyurethane coating to form a PE protective film layer, and finishing the manufacturing of the stainless steel composite board.
2. The method according to claim 1, wherein in step S2, a heat insulating coating material formed by compounding a passivation solution and a heat insulating material is used for the passivation treatment to form a heat insulating passivation layer on the front surface of the base material layer.
3. The method for manufacturing a stainless steel composite plate according to claim 2, wherein the heat insulating material is a polymer heat insulating paint prepared by using resin and infrared ceramic particles as main raw materials.
4. A method of manufacturing a stainless steel composite panel according to claim 3, wherein the heat insulating coating comprises, by mass:
50-60 parts of phenolic resin, 10-20 parts of infrared ceramic particles, 3-7 parts of carbon fibers, 2-5 parts of dispersing agent, 1-6 parts of boron nitride or boron nitride and 10-20 parts of passivation solution.
5. A method of manufacturing a stainless steel composite panel according to claim 1 or 2, wherein the step of cleaning comprises:
s11, spraying alkaline solution to remove oil on the surface of the stainless steel substrate layer;
s12, placing the deoiled substrate layer in an electrolytic tank with electrolyte for electrolytic treatment so as to clean the surface of the substrate layer;
s13, spraying and washing the electrolyzed substrate layer with clear water;
s14, drying the substrate layer after washing.
6. The method for manufacturing a stainless steel composite plate according to claim 1 or 2, wherein the first nano oily polyurethane coating and the second nano oily polyurethane coating are nano oily polyurethane coating prepared by using nano oily polyurethane as a main material.
7. A method of manufacturing a stainless steel composite panel according to claim 1 or 2, wherein the substrate layer is made of 2-series stainless steel or 3-series stainless steel or 4-series stainless steel.
8. A method of manufacturing a stainless steel composite panel according to claim 1 or 2, wherein the thickness of the substrate layer is 0.2-1.0mm.
9. A stainless steel composite panel produced by the method of any one of claims 1-8.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311065707.6A CN117067719A (en) | 2023-08-23 | 2023-08-23 | Stainless steel composite board and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311065707.6A CN117067719A (en) | 2023-08-23 | 2023-08-23 | Stainless steel composite board and manufacturing method thereof |
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