CN221108856U - Easily clean resistant composite construction who scrapes - Google Patents
Easily clean resistant composite construction who scrapes Download PDFInfo
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- CN221108856U CN221108856U CN202321399874.XU CN202321399874U CN221108856U CN 221108856 U CN221108856 U CN 221108856U CN 202321399874 U CN202321399874 U CN 202321399874U CN 221108856 U CN221108856 U CN 221108856U
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- 239000002131 composite material Substances 0.000 title claims abstract description 50
- 238000010276 construction Methods 0.000 title description 2
- 239000006120 scratch resistant coating Substances 0.000 claims abstract description 74
- 239000000758 substrate Substances 0.000 claims abstract description 73
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 56
- 229910052751 metal Inorganic materials 0.000 claims abstract description 39
- 239000002184 metal Substances 0.000 claims abstract description 39
- 238000000576 coating method Methods 0.000 claims abstract description 28
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 28
- 239000006119 easy-to-clean coating Substances 0.000 claims abstract description 27
- 239000011248 coating agent Substances 0.000 claims abstract description 26
- 230000003678 scratch resistant effect Effects 0.000 claims abstract description 22
- 230000003670 easy-to-clean Effects 0.000 claims abstract description 18
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 16
- 229910001220 stainless steel Inorganic materials 0.000 claims description 24
- 239000010935 stainless steel Substances 0.000 claims description 24
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 9
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 8
- 239000011777 magnesium Substances 0.000 claims description 7
- -1 polysiloxanes Polymers 0.000 claims description 7
- 229910052749 magnesium Inorganic materials 0.000 claims description 6
- 229910044991 metal oxide Inorganic materials 0.000 claims description 6
- 150000004706 metal oxides Chemical class 0.000 claims description 6
- 239000010702 perfluoropolyether Substances 0.000 claims description 4
- 230000002209 hydrophobic effect Effects 0.000 claims description 3
- 229920001296 polysiloxane Polymers 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 abstract description 25
- 239000010703 silicon Substances 0.000 abstract description 9
- 229910052710 silicon Inorganic materials 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 6
- 230000008878 coupling Effects 0.000 abstract description 4
- 238000010168 coupling process Methods 0.000 abstract description 4
- 238000005859 coupling reaction Methods 0.000 abstract description 4
- 230000003373 anti-fouling effect Effects 0.000 abstract description 3
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 12
- 239000004111 Potassium silicate Substances 0.000 description 8
- NNHHDJVEYQHLHG-UHFFFAOYSA-N potassium silicate Chemical compound [K+].[K+].[O-][Si]([O-])=O NNHHDJVEYQHLHG-UHFFFAOYSA-N 0.000 description 8
- 229910052913 potassium silicate Inorganic materials 0.000 description 8
- 235000019353 potassium silicate Nutrition 0.000 description 8
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 6
- PAZHGORSDKKUPI-UHFFFAOYSA-N lithium metasilicate Chemical compound [Li+].[Li+].[O-][Si]([O-])=O PAZHGORSDKKUPI-UHFFFAOYSA-N 0.000 description 6
- 229910052912 lithium silicate Inorganic materials 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 229920000307 polymer substrate Polymers 0.000 description 6
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 5
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 description 5
- 239000003792 electrolyte Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
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- 238000007254 oxidation reaction Methods 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 238000005491 wire drawing Methods 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- 235000019832 sodium triphosphate Nutrition 0.000 description 4
- UNXRWKVEANCORM-UHFFFAOYSA-I triphosphate(5-) Chemical compound [O-]P([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O UNXRWKVEANCORM-UHFFFAOYSA-I 0.000 description 4
- 210000002268 wool Anatomy 0.000 description 4
- 239000000945 filler Substances 0.000 description 3
- 238000009472 formulation Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000004115 Sodium Silicate Substances 0.000 description 2
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- ILRRQNADMUWWFW-UHFFFAOYSA-K aluminium phosphate Chemical compound O1[Al]2OP1(=O)O2 ILRRQNADMUWWFW-UHFFFAOYSA-K 0.000 description 2
- RGPUVZXXZFNFBF-UHFFFAOYSA-K diphosphonooxyalumanyl dihydrogen phosphate Chemical compound [Al+3].OP(O)([O-])=O.OP(O)([O-])=O.OP(O)([O-])=O RGPUVZXXZFNFBF-UHFFFAOYSA-K 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 229910052911 sodium silicate Inorganic materials 0.000 description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 229910026161 MgAl2O4 Inorganic materials 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
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- 238000001755 magnetron sputter deposition Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000005240 physical vapour deposition Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 229910052596 spinel Inorganic materials 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
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Abstract
The utility model discloses an easy-to-clean scratch-resistant composite structure which comprises a scratch-resistant coating, a silicon dioxide layer and an easy-to-clean coating which are sequentially stacked on the surface of a metal substrate. The scratch-resistant coating is arranged on the surface of the metal substrate, and the scratch-resistant coating are tightly combined, so that the scratch-resistant capability of the metal substrate can be greatly improved; the silicon dioxide layer is mainly used as a coupling layer, can be firmly combined with the scratch-resistant coating, provides a large number of active silicon hydroxyl groups, and forms a firm covalent bond with molecules in the easy-to-clean coating, so that the firm combination of the easy-to-clean coating is realized, and the scratch resistance of the composite structure is improved; the composite structure has stiffening effect, and can further improve the scratch resistance of the composite structure; the easy-cleaning coating is arranged, so that foreign matters are difficult to firmly attach on the surface of the easy-cleaning coating, and the anti-fouling and easy-cleaning functions are realized. Therefore, the composite structure has excellent easy-cleaning performance and scratch resistance through the combination of the scratch-resistant coating, the silicon dioxide layer and the easy-cleaning coating.
Description
Technical Field
The utility model relates to the technical field of coatings, in particular to an easy-to-clean scratch-resistant composite structure.
Background
Some common metal (such as stainless steel) appliances or devices in life, including appliances or devices with metal appearance, are difficult to scratch in the use process, and if the surface is not specially treated, the surface is easy to scratch when scratched by hard objects, so that the attractive appearance is affected; in addition, in the daily use process of the appliance equipment, in order to facilitate daily easy management, the appliance equipment is generally required to have the functions of resisting dirt and easy cleaning. In the existing apparatus, part of the apparatus is easy to clean and has poor performance, scratches still remain after multiple times of friction, and the scratch resistance is required to be improved; while some of the materials have better easy-cleaning performance, the friction resistance is not good enough, and scratches still remain due to high-force friction.
Disclosure of utility model
The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides a composite structure which is easy to clean and resistant to scratch.
According to a first aspect of the utility model, an easy-to-clean scratch-resistant composite structure is provided, which comprises a scratch-resistant coating, a silicon dioxide layer and an easy-to-clean coating which are sequentially stacked on the surface of a metal substrate.
The easy-to-clean scratch-resistant composite structure provided by the embodiment of the utility model has at least the following beneficial effects: the composite structure comprises a scratch-resistant coating, a silicon dioxide layer and an easy-to-clean coating which are sequentially laminated on the surface of a metal substrate. The scratch-resistant coating is arranged on the surface of the metal substrate and is closely adhered to the surface of the metal substrate, and the scratch-resistant coating are closely combined, so that the scratch-resistant capability of the metal substrate can be greatly improved; the intermediate silicon dioxide layer is mainly used as a coupling layer, can be firmly combined with the scratch-resistant coating, provides a large number of active silicon hydroxyl groups, and forms a firm covalent bond with molecules in the easy-to-clean coating, so that the firm combination of the easy-to-clean coating is realized, and the scratch resistance of the composite structure is improved; the silicon dioxide layer has a certain stiffening effect, so that the scratch resistance of the composite structure can be further improved; the easy-cleaning coating is arranged, so that foreign matters are difficult to firmly attach on the surface of the easy-cleaning coating, and the anti-pollution and easy-cleaning functions are realized. Therefore, the composite structure has excellent easy-cleaning performance and scratch resistance through the composition of the scratch-resistant coating, the silicon dioxide layer and the easy-cleaning coating.
In some embodiments of the utility model, the Yi Jietu layers are hydrophobic easy-to-clean coatings.
In some embodiments of the present utility model, the easy-to-clean coating is made of any one of polysiloxane, perfluoropolyether siloxane, and fluoroalkyl siloxane.
In some embodiments of the utility model, the easy-to-clean coating has a thickness of 10 to 100nm.
In some embodiments of the utility model, the metal substrate is selected from any one of a stainless steel substrate, a metallic aluminum substrate, a metallic magnesium substrate.
In some embodiments of the utility model, the scratch resistant coating is a hard coating.
In some embodiments of the utility model, the scratch resistant coating is a metal oxide layer or a diamond-like film layer.
In some embodiments of the utility model, the scratch-resistant coating is a high temperature cured scratch-resistant coating.
In some embodiments of the utility model, the scratch-resistant coating has a thickness of 0.5 to 50 μm.
In some embodiments of the utility model, the silicon dioxide layer has a thickness of 5 to 20nm.
Drawings
The utility model is further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic view of an embodiment of a scratch-resistant composite structure with easy cleaning according to the present utility model.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.
In the description of the present utility model, the meaning of a number is one or more, the meaning of a number is two or more, and greater than, less than, exceeding, etc. are understood to exclude the present number, and the meaning of a number is understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.
In the description of the present utility model, the descriptions of the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an embodiment of a scratch-resistant composite structure with easy cleaning according to the present utility model, which includes a scratch-resistant coating 20, a silica layer 30 and an easy cleaning coating 40 sequentially stacked on a surface of a metal substrate 10.
The metal substrate 10 may specifically be a stainless steel substrate, a metal aluminum substrate, a metal magnesium substrate, or the like; the stainless steel substrate may be a drawn stainless steel substrate, an electroplated chrome stainless steel substrate, a polished stainless steel substrate, or the like. In this embodiment, the metal substrate 10 is a drawn stainless steel substrate.
The scratch-resistant coating 20 is a hard coating, typically an inorganic scratch-resistant coating, preferably a hard coating having a pencil hardness of 9H or more. The scratch-resistant coating 20 is specifically attached to the surface of the metal substrate 10, and the surface hardness of the metal substrate 10 can be improved by the arrangement of the scratch-resistant coating 20 and the tight combination of the scratch-resistant coating and the metal substrate 10, so that the scratch-resistant capability of the composite structure is improved.
In some embodiments, the scratch-resistant coating 20 may be prepared by coating the surface of the metal substrate 10 with a formulation of currently available scratch-resistant coating components, and then drying and curing the coating. In some embodiments, the constituent formulations of the scratch resistant coating 20 may include film forming materials, wear resistant fillers, curing agents, and the like; the film forming material can be organic resin or inorganic matters such as high-modulus potassium silicate, aluminum dihydrogen phosphate and the like, if the organic resin is adopted as the film forming material, the pencil hardness of the scratch-resistant coating is generally less than 9H; preferably, inorganic matters such as high modulus potassium silicate, aluminum dihydrogen phosphate and the like are used as film forming substances, so that the pencil hardness of the scratch-resistant coating can be improved, and the pencil hardness of the scratch-resistant coating 20 can be more than 9H; the wear-resistant filler can be inorganic wear-resistant filler such as alumina, silica, silicon carbide and the like.
Specifically, in some embodiments, the coating of the scratch-resistant coating 20 may be composed of, in weight percent: 3.2 to 9.6 percent of high modulus (modulus is 5 to 7) potassium silicate, 2.4 to 3.6 percent of lithium silicate, 3.2 to 4.8 percent of silica sol, 1.6 to 2.4 percent of alumina sol, 1.6 to 2.4 percent of nano zirconia sol, 0.8 to 1.2 percent of silicon tripolyphosphate and the balance of water. For example, in some embodiments, the coating of the scratch-resistant coating may be composed of, in weight percent: 3.2% of high modulus (modulus is 5-7) potassium silicate, 3.6% of lithium silicate, 3.2% of silica sol, 2.4% of alumina sol, 1.6% of nano zirconia sol, 1.2% of silicon tripolyphosphate and the balance of water; in some embodiments, the coating of the scratch-resistant coating may consist of, in weight percent: 9.6% of high modulus (modulus is 5-7) potassium silicate, 2.4% of lithium silicate, 4.8% of silica sol, 1.6% of alumina sol, 2.4% of nano zirconia sol, 0.8% of silicon tripolyphosphate and the balance of water.
In some embodiments, the coating of the scratch resistant coating 20 may be composed of the following components in mass percent: 7% of lithium silicate, 3% of sodium silicate, 12% of potassium silicate, 13% of silica sol, 2.5% of alumina sol, 2% of nano zirconia dispersion liquid, 2.2% of aluminum phosphate, 6.5% of triethanolamine, 0.8% of modified siloxane and 51% of water; in some embodiments, lithium silicate 7%, sodium silicate 3%, potassium silicate 12%, aluminum sol 3.7%, 2% epoxy silane oligomer modified silica sol 12.8%, nano zirconia dispersion 2%, aluminum phosphate 2.2%, triethanolamine 6.5%, modified siloxane 0.8%, water 50%.
In other embodiments, the configuration of the scratch-resistant coating 20 coating may be adjusted or other existing scratch-resistant coating 20 coating ingredient formulations may be employed as desired.
The scratch-resistant coating 20 is coated on the metal substrate 10, and is further cured and formed after being dried. Wherein the drying temperature can be controlled at 45-60 ℃, such as 45 ℃, 50 ℃, 55 ℃, 60 ℃ and the drying time can be 10-20 min. The curing temperature may be 130 to 230 ℃, even 250 to 270 ℃ or more than 280 ℃, whereby the scratch-resistant coating 20 is a high temperature curable scratch-resistant coating, the curing temperature of which may be 130 to 230 ℃, even 250 to 270 ℃ or more than 280 ℃, such as 280 to 350 ℃, 350 to 400 ℃. The scratch-resistant coating is generally not suitable for high-temperature-resistant substrates such as plastics due to high curing temperature, but is suitable for high-temperature-resistant metal substrates such as stainless steel substrates, metal aluminum substrates and metal magnesium substrates; in addition, if a polymer substrate such as plastic is used, the adhesion of the scratch-resistant coating 20 on the surface of the polymer substrate is small, the bonding force between the two is weak, the stability of the composite structure is poor, and the scratch-resistant performance of the composite structure cannot be effectively improved through the scratch-resistant coating 20, so that the composite structure is not suitable for the polymer substrate such as plastic.
In some embodiments, the scratch resistant coating 20 may also employ a metal oxide layer. For example, if the metal substrate 10 is a metal aluminum substrate or a metal magnesium substrate, the scratch-resistant coating 20 on the surface thereof may be designed as a corresponding metal oxide layer, and specifically, by placing the above metal substrate 10 in an electrolyte, and electrifying the metal substrate to perform anodic oxidation, a corresponding oxide film is generated on the surface of the metal substrate 10 to serve as the scratch-resistant coating 20. For a metallic aluminum substrate, an aluminum oxide film may be formed on the surface of the metallic aluminum substrate by anodic oxidation; the type of the surface oxide film of the magnesium metal substrate is generally also affected by the element contained in the electrolyte, and for example, if Cr, al, P, F element is contained in the electrolyte, the magnesium metal substrate can form a composite oxide film composed of MgO, mgCr 2O7、MgAl2O4、Mg2FPO4, or the like by anodic oxidation in the electrolyte. The aluminum oxide film and the composite oxide film have higher hardness, and can improve the scratch resistance of the composite structure as the scratch-resistant coating 20; and, for the above metallic aluminum or metallic magnesium substrate, the metal oxide layer is directly formed on the surface of the metallic substrate 10 as the scratch-resistant coating 20 by anodic oxidation by electrifying it in an electrolyte, and the production thereof is fast and efficient. Of course, in some embodiments, the scratch resistant coating 20 may also be deposited using other hard coatings, such as PVD or CVD diamond-like films. Considering the adhesion between the scratch-resistant coating 20 and the substrate, if the scratch-resistant coating 20 is disposed on the surface of the polymer substrate, the scratch-resistant coating 20 has the problems of small adhesion, weak bonding force and poor structural stability, and effective deposition or adhesion of the scratch-resistant coating 20 cannot be realized; also, if a polymer substrate is used, a metal oxide scratch-resistant coating cannot be formed on the surface of the substrate by anodic oxidation, and thus the above scratch-resistant coating 20 is applicable to a metal substrate, not to a polymer substrate such as plastic.
From the above, different adaptive scratch-resistant coatings 20 can be correspondingly designed based on different metal substrates 10, so that the performance of the composite structure can be effectively improved. The thickness of the scratch-resistant coating 20 may be 0.5 to 50. Mu.m, for example, 0.5 to 10. Mu.m, 10 to 20. Mu.m, 15 to 35. Mu.m, 30 to 40. Mu.m, 40 to 50. Mu.m.
In this embodiment, the scratch-resistant coating 20 is formulated as a paint from a blend of the following components in weight percent: 3.2% of high modulus (modulus is 5-7) potassium silicate, 3.6% of lithium silicate, 3.2% of silica sol, 2.4% of alumina sol, 1.6% of nano zirconia sol, 1.2% of silicon tripolyphosphate and the balance of water, then coating the surface of a wiredrawing stainless steel substrate, drying the wiredrawing stainless steel substrate at 50 ℃ for 10min, and curing the wiredrawing stainless steel substrate at 180 ℃ for 30min to obtain the wiredrawing stainless steel substrate with the thickness of 1 mu m.
The silica layer 30 acts as an intermediate layer which is specifically applied to the surface of the scratch-resistant coating 20 on the side facing away from the metal substrate 10. The silica layer 30 itself also has a certain stiffening effect to improve the scratch resistance of the composite structure, but its greatest effect is to serve as a coupling layer which can be firmly bonded with the scratch resistant coating 20 while providing a large number of reactive silicon hydroxyl groups to form firm covalent bonds with molecules in the easy-to-clean coating 40, thereby achieving firm bonding of the easy-to-clean coating 40 and improving the scratch resistance of the composite structure. The thickness of the silica layer 30 may be controlled to 5 to 20nm, for example, 5 to 10nm, 8 to 12nm, 10 to 15nm, and 15 to 20nm. Specifically, pure silicon is used as a target material, and a silicon dioxide layer 30 is plated on the surface of the scratch-resistant coating 20 by magnetron sputtering. Of course, in other embodiments, the silicon dioxide layer 30 may be provided in other ways. In this embodiment, the thickness of the silicon dioxide layer 30 is 15nm.
The easy-cleaning coating 40 is adhered to the surface of the silica layer 30 on the side facing away from the scratch-resistant coating 20, specifically is a hydrophobic easy-cleaning coating, and can be composed of a low-surface-energy substance, specifically can be any one of polysiloxane, perfluoropolyether siloxane and fluoroalkyl siloxane, and further the silica layer 30 and the easy-cleaning coating 40 can be combined through a silicone-oxygen covalent bond. The easy-to-clean coating 40 may be specifically provided by vacuum evaporation, normal pressure evaporation, spraying, or the like, and the thickness of the easy-to-clean coating 40 may be 10 to 100nm, for example, 10 to 30nm, 30 to 50nm, 45 to 55nm, 55 to 100nm, 55 to 65nm, 60 to 80nm, 80 to 100nm. In this embodiment, the easy-to-clean coating 40 is made of perfluoropolyether siloxane and has a thickness of 50nm. Through the arrangement of the easy-to-clean coating 40, foreign matters are difficult to firmly adhere to the surface of the easy-to-clean coating, so that the anti-fouling and easy-to-clean functions can be realized, meanwhile, the surface friction coefficient is small, the specific friction coefficient is smaller than 0.1, namely, the surface of the easy-to-clean coating 40 is very smooth, and the scratch resistance of the composite structure can be further improved.
The inventors have examined the properties of the composite structure of the present application, on the basis of the scratch-resistant composite structure (designated as sample 1) which is easy to clean in this example, a composite structure (designated as sample 2) which does not contain the scratch-resistant coating 20 and has the same arrangement of other layer structures as in this example, and a composite structure (designated as sample 3) which does not contain the silica layer 30 and the easy-to-clean coating 40 and has the same arrangement of other layer structures as in this example were prepared, respectively, and the scratch-resistant property and the easy-to-clean property of the above samples were tested, respectively, with a drawn stainless steel substrate which is not subjected to any treatment as sample 4.
According to scratch resistance tests, the scratch resistance of the stainless steel substrate is improved greatly by arranging the scratch resistant coating 20 on the surface of the stainless steel substrate in the sample 3, but if the number of times of friction is too large, even if the pressure is not too large, obvious macroscopic scratches can be left on the surface of the composite structure, and particularly, the surface can be scratched by using #0000 steel wool to rub for 500 times under the pressure of 100 KPa. The inventors further prepared a composite structure using a polished stainless steel substrate instead of the drawn stainless steel substrate in sample 3, and performed scratch tests in the same manner, with more pronounced scratches. In addition, in the easy-cleaning property test, it was found that the scratch-resistant coating 20 in sample 3 had a certain hydrophilic easy-cleaning property as compared with sample 4, but had a limited effect, and the scale formed on the surface thereof for a long period of time was not easy to clean.
In sample 2, the silicon dioxide layer 30 and the easy-cleaning coating 40 are sequentially laminated on the surface of the stainless steel substrate, and the two layers are compounded to have certain scratch resistance, but if the friction force is too large, scratches are left when the stainless steel substrate is rubbed for a plurality of times by using #0000 steel wool, and the scratch resistance is insufficient. The inventors further prepared a composite structure using a polished stainless steel substrate instead of the drawn stainless steel substrate in sample 2, and the prepared composite structure had poorer abrasion resistance, and abrasion with #0000 steel wool at 100KPa pressure was sufficient for grinding.
Sample 1 has excellent easy-cleaning performance and scratch resistance, and basically does not change the original appearance after the scratch-resistant coating 20, the silicon dioxide layer 30 and the easy-cleaning coating 40 are sequentially laminated on the surface of the wiredrawing stainless steel substrate. Most pollutants (such as tap water, greasy dirt and the like) cannot be firmly adhered to the surface of the water-soluble polymer film, and can be easily erased; the surface is scratched without scratches by #0000 steel wool under the pressure of 100KPa (more than 2000 times), and the surface is scratched without scratches by steel wire balls under high force (far more than 100 KPa).
As can be seen from the above, the composite structure of the present application includes the scratch-resistant coating 20, the silica layer 30 and the easy-to-clean coating 40 sequentially laminated on the surface of the metal substrate 10. The scratch-resistant coating 20 is arranged on the surface of the metal substrate 10, and is closely adhered to the surface of the metal substrate, and the scratch-resistant coating are closely combined, so that the scratch-resistant capability of the metal substrate can be greatly improved; the silica layer 30 is mainly used as a coupling layer, can be firmly combined with the scratch-resistant coating 20, provides a large amount of active silicon hydroxyl groups at the same time, and forms a firm covalent bond with molecules in the easy-to-clean coating 40, so that the firm combination of the easy-to-clean coating 40 is realized, and the scratch resistance of the composite structure is improved; the silicon dioxide layer 30 has stiffening effect, so that the scratch resistance of the composite structure can be further improved; the provision of the easy-cleaning coating 40 makes it difficult for foreign substances to be firmly attached to the surface thereof to realize an anti-fouling easy-cleaning function. Thus, the above-mentioned scratch-resistant coating 20, silica layer 30 and easy-to-clean coating 40 can be compounded to provide a composite structure having excellent easy-to-clean performance and scratch-resistant performance.
The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model. Furthermore, embodiments of the utility model and features of the embodiments may be combined with each other without conflict.
Claims (10)
1. The composite structure is characterized by comprising a scratch-resistant coating, a silicon dioxide layer and an easy-to-clean coating which are sequentially stacked on the surface of a metal substrate.
2. The easy-to-clean scratch-resistant composite structure of claim 1 wherein said Yi Jietu layer is a hydrophobic easy-to-clean coating.
3. The easy-to-clean scratch-resistant composite structure according to claim 2, wherein the easy-to-clean coating is made of any one selected from the group consisting of polysiloxanes, perfluoropolyether siloxanes, fluoroalkyl siloxanes.
4. A composite structure according to claim 3, wherein the thickness of the easy-to-clean coating is from 10 to 100nm.
5. The easy-to-clean scratch resistant composite structure of claim 1, wherein said metal substrate is selected from any one of a stainless steel substrate, a metallic aluminum substrate, a metallic magnesium substrate.
6. The easy-to-clean scratch-resistant composite structure of claim 1 wherein said scratch-resistant coating is a hard coating.
7. The easy-to-clean scratch-resistant composite structure of claim 6, wherein the scratch-resistant coating is a metal oxide layer or a diamond-like film layer.
8. The easy-to-clean scratch-resistant composite structure of claim 6 wherein said scratch-resistant coating is a high temperature cured scratch-resistant coating.
9. The easy-to-clean scratch-resistant composite structure according to claim 1, wherein the scratch-resistant coating has a thickness of 0.5 to 50 μm.
10. The easily cleaned scratch resistant composite structure according to any one of claims 1 to 9, wherein the thickness of the silica layer is 5-20 nm.
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| CN202321399874.XU CN221108856U (en) | 2023-06-02 | 2023-06-02 | Easily clean resistant composite construction who scrapes |
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| CN202321399874.XU CN221108856U (en) | 2023-06-02 | 2023-06-02 | Easily clean resistant composite construction who scrapes |
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