CN113046696A

CN113046696A - Decorative material, preparation method thereof and electronic equipment

Info

Publication number: CN113046696A
Application number: CN202010579401.2A
Authority: CN
Inventors: 罗富华; 马兰; 刘晨岑; 刘玉阳
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2020-06-23
Filing date: 2020-06-23
Publication date: 2021-06-29

Abstract

The invention provides a decorative material, which comprises: a substrate; the priming layer is arranged on one side of the base body; the transition layer is arranged on one side of the base layer, which is far away from the base body; the color layer is arranged on one side of the transition layer, which is far away from the priming layer; the connecting layer is arranged on one side of the color layer, which is far away from the transition layer; the coating layer is arranged on one side of the connecting layer, which is far away from the color layer; the coating layer comprises multiple sub-coating layers which are sequentially stacked, wherein the sub-coating layers comprise a high-refractive-index sub-coating layer and a low-refractive-index sub-coating layer, and the high-refractive-index sub-coating layer and the low-refractive-index sub-coating layerThe rate sub-coating layers are alternately arranged; wherein the base has a thermal expansion coefficient of 13 × 10^‑6/K‑15×10^‑6K, thermal expansion coefficient of the base layer is 16 x 10^‑6/K‑19×10^‑6and/K. From this, this ornamental material can realize dazzling various effect, can also guarantee the cohesion between the ornamental material each layer simultaneously, has avoided the problem that the rete drops in the use.

Description

Decorative material, preparation method thereof and electronic equipment

Technical Field

The invention relates to the field of materials, in particular to a decorative material, a preparation method thereof and electronic equipment.

Background

With the progress of science and technology and the development of technology, people have higher and higher requirements on the appearance decoration effect of materials, the appearance decoration with single color tone cannot meet the requirements of users, and the appearance decoration effect of materials is developing towards diversification.

In the prior art, a color layer can be deposited on the surface of a base body through Physical Vapor Deposition (PVD), but the colorful effect (different colors are seen in all directions) cannot be realized; and a coating layer is formed on the surface of the substrate by a non-conductive plating technique (NCVM), although the glare effect can be realized, the bonding force between the coating layer and the substrate is small, and a part of the coating layer is easy to peel off from the surface of the substrate in the using process.

Disclosure of Invention

The present invention is directed to solving, at least to some extent, one of the technical problems in the related art described above. Therefore, the decorative material has a colorful effect and good interlayer bonding force.

The present invention provides in a first aspect a decorative material comprising: a substrate; the priming layer is arranged on one side of the base body; the transition layer is arranged on one side, far away from the base body, of the base layer; the color layer is arranged on one side, far away from the bottoming layer, of the transition layer; the connecting layer is arranged on one side, far away from the transition layer, of the color layer; the coating layer is arranged on one side of the connecting layer, which is far away from the color layer; the coating layer comprises a plurality of sub-coating layers which are sequentially stacked, the sub-coating layers comprise high-refractive-index sub-coating layers and low-refractive-index sub-coating layers, and the high-refractive-index sub-coating layers and the low-refractive-index sub-coating layers are alternately arranged; wherein the base has a thermal expansion coefficient of 13 × 10^-6/K -15×10^-6K, the coefficient of thermal expansion of the primer layer is 16 x 10^-6/K -19×10^-6/K。

According to the decorative material provided by the invention, the multiple sub-coating layers arranged in a laminated way can enable light to generate interference when the incident angles are differentThe coating layer has different interference effects on light, so that different visual effects can be presented, on one hand, the color layer can reflect part of incident light to provide a color development effect, and on the other hand, the color layer has colors, so that the visual effect of the decorative material is more obvious, and the colorful effect can be realized by superposing the coating layer and the color layer; in addition, the priming layer is arranged between the base body and the transition layer, the transition layer is arranged between the color layer and the priming layer, and the connecting layer is arranged between the coating layer and the color layer, so that the difference of thermal expansion coefficients among the film layers is reduced, the film layers have good binding force, and the technical problem of falling off of the film layers is avoided; the coefficient of thermal expansion of the substrate is 13 x 10^-6/K -15×10^-6K, the coefficient of thermal expansion of the primer layer is 16 x 10^-6/K -19×10^-6And the thermal expansion coefficients of the base layer and the base layer are close, so that the bonding force between the base layer and the base layer can be further improved. From this, this ornamental material can realize dazzling various effect, can also guarantee the cohesion between the ornamental material each layer simultaneously, has avoided the problem that the rete drops in the use.

In a second aspect of the present invention, a method for preparing a decorative material is provided: providing a substrate; forming a primer layer on one side of the substrate; forming a transition layer on one side of the base layer, which is far away from the base body; forming a color layer on one side of the transition layer far away from the priming layer; forming a connecting layer on one side of the color layer far away from the transition layer; forming a coating layer on one side of the connecting layer, which is far away from the color layer, wherein the coating layer comprises a plurality of sub-coating layers, the sub-coating layers comprise a high-refractive-index sub-coating layer and a low-refractive-index sub-coating layer, and the high-refractive-index sub-coating layer and the low-refractive-index sub-coating layer are alternately arranged; wherein the base has a thermal expansion coefficient of 13 × 10^-6/K -15×10^-6K, the coefficient of thermal expansion of the primer layer is 16 x 10^-6/K -19×10^-6and/K. The preparation method of the decorative material provided by the invention is simple and easy to realize, and the decorative material with a colorful effect and good interlayer bonding force can be prepared.

A third aspect of the invention provides an electronic apparatus including the aforementioned decorating material. Therefore, at least one part of the electronic equipment is formed by the decorative material, and the electronic equipment has all the characteristics and advantages of the decorative material, and is not described in detail herein.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic cross-sectional view of a trim material according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of an upholstery material according to another embodiment of the invention;

FIG. 3 is a schematic cross-sectional view of an upholstery material according to another embodiment of the invention;

description of reference numerals:

10. a substrate; 20. a transition layer; 210 a first transition layer; 220. a second transition layer; 30. a color layer; 40. a connecting layer; 50. coating a film layer; 510. a sub-coating layer; 60. an anti-fingerprint layer; 70. and (7) priming.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

As shown in fig. 1-2, a first aspect of the present invention provides a decorating material comprising: the coating comprises a base body 10, a priming layer 70, a transition layer 20, a color layer 30, a connecting layer 40 and a coating layer 50; the base layer 70 is arranged on one side of the base layer 10, the transition layer 20 is arranged on one side of the base layer 70 far away from the base body 10, and the color layer 30 is arranged on one side of the transition layer 20 far away from the base layer 70; the connecting layer 40 is arranged on the side of the color layer 30 far away from the transition layer 20; the coating layer 50 is arranged on one side of the connecting layer 40 far away from the color layer 30, and the coating layer 50 comprises a plurality of sub-coating layers 510 which are sequentially laminated,the multi-layer sub-coating layers 510 comprise high-refractive-index sub-coating layers and low-refractive-index sub-coating layers, and the high-refractive-index sub-coating layers and the low-refractive-index sub-coating layers are alternately arranged; wherein the base 10 has a thermal expansion coefficient of 13 x 10^-6/K -15×10^-6K, the coefficient of thermal expansion of the primer layer 70 is 16X 10^-6/K -19×10^-6and/K. Therefore, light can interfere through the lamination arrangement of the multiple sub-coating layers 510, when the incident light has different angles, the coating layer 50 refracts and reflects the incident light, the incident light can show dazzling light effects at different angles through the refraction and reflection of the multiple sub-coating layers 510, on one hand, the color layer can reflect part of the incident light to provide a color development effect, and on the other hand, the color layer has colors, so that the visual effect of the decorative material is more obvious; the superposition of the film coating layer and the color layer can realize the colorful effect; in addition, the priming layer 70 is arranged between the base body 10 and the transition layer 20, the transition layer 20 is arranged between the color layer 30 and the priming layer 70, and the connecting layer 40 is arranged between the coating layer 50 and the color layer 30, so that the difference of the thermal expansion coefficients of all the film layers is reduced, the film layers have good binding force, and the technical problem of film layer falling is avoided, moreover, the thermal expansion coefficient of the base body 10 is 13 multiplied by 10^-6/K -15×10^-6K, the coefficient of thermal expansion of the primer layer 70 is 16X 10^-6/K -19×10^-6and/K, the thermal expansion coefficients of the substrate 10 and the bottom layer 70 are close, so that the bonding force between the substrate and the bottom layer can be further improved. Therefore, the decorative material can realize the colorful effect, can ensure the binding force between layers of the decorative material, and avoids the problem that a coating layer falls off in the use process.

In an embodiment of the present invention, the substrate 10, which is a main body of the decoration material, may be a thin plate made of a metal material, and the thickness thereof may be selected according to actual needs without particular limitation. Preferably, the material of the substrate 10 includes stainless steel, and in this case, the material of the primer layer 70 also includes stainless steel, so that the primer layer 70 and the substrate 10 have the same material, have a small difference in thermal expansion coefficient, and have a good bonding force therebetween, and can provide a good support for the subsequent film layer.

One of the inventionIn the embodiment, the thickness of the plating layer 50 is 20nm to 1000nm, and thus, the appearance effect of the decorative material can be more effectively exhibited. It will be appreciated that the coating has a degree of light transmittance such that incident light can pass through the coating to cause interference. The number of layers of the multilayer sub-coating 510 is not particularly limited, for example: there may be 2 layers, 3 layers, 4 layers, 5 layers, 6 layers, 7 layers … …, and so on. Furthermore, the refractive index of the high-refractive-index sub-coating layer is more than or equal to 2.0; the refractive index of the low refractive index sub-coating layer is less than 2.0. The material of the high-refractivity sub-coating layer may include titanium oxide (TiO)₂) Titanium oxide (Ti)₂O₃) Titanium oxide (Ti)₃O₅) Tantalum pentoxide (Ta)₂O₅) Zirconium oxide (ZrO)₂) Niobium oxide (Nb)₂O₅) And cerium oxide (CeO)₂) The material of the low refractive index coating layer may include aluminum oxide (Al)₂O₃) Silicon dioxide (SiO)₂) And magnesium oxide (MgO).

In one embodiment of the present invention, the sub-coating layer adjacent to the connection layer 40 among the plurality of sub-coating layers is a first sub-coating layer, and the coefficient of thermal expansion of the first sub-coating layer is 3 × 10^-6/K -6×10^-6K, the thermal expansion coefficient of the connection layer 40 is 5 x 10^-6/K -10×10^-6And the thermal expansion coefficient of the first sub-coating layer is smaller than that of the connecting layer. The invention arranges a thermal expansion coefficient of 5 multiplied by 10 between a coating layer 50 and a color layer 30^-6/K -10×10^-6A connection layer 40 in the/K range, and controlling the thermal expansion coefficient of the first sub-coating layer to 3 × 10^-6/K -6×10^-6In the/K range, the thermal expansion coefficient of the first sub-coating layer is smaller than that of the connecting layer 40, so that the binding force between the coating layer 50 and the color layer 30 can be improved. Therefore, the decorative material can realize the colorful effect, can ensure the binding force between layers of the decorative material, and avoids the problem that a coating layer falls off in the use process.

It should be noted that the "thermal expansion coefficient of the first sub-film is smaller than that of the connection layer" in the present invention means that the variation trend of the thermal expansion coefficients of the first sub-film and the connection layer is gradually reduced, and it is not excluded that the thermal expansion coefficients of the first sub-film and the connection layer are close to each other due to technical condition limitations or errors.

In one embodiment of the present invention, the primer layer 70, the transition layer 20, the color layer 30 and the connection layer 40 are all physical vapor deposition coatings, and the coating layer 50 is a non-conductive electroplating coating. The membrane layers formed by physical vapor deposition have strong controllability, and the compactness and the thermal expansion coefficient of each membrane layer can be controlled, so that the binding force among the membrane layers is good; the coating layer containing the multilayer sub-coating layers formed by non-conductive electroplating has a dazzling effect, and the coating layer are combined to form a decorative layer which is good in bonding force and has a dazzling optical effect on a substrate.

In one embodiment of the present invention, the thermal expansion coefficients of the primer layer 70, the transition layer 20, the color layer 30 and the connection layer 40 are gradually decreased; therefore, the difference of the thermal expansion coefficients of the layers is small, and the film explosion phenomenon caused by the large difference of the thermal expansion coefficients of the substrate 10 and the film coating layer 50 is avoided.

In one embodiment of the present invention, the transition layer 20 has a coefficient of thermal expansion of 20 × 10^-6/K -25×10^-6The thermal expansion coefficients of the transition layer and the base body are different to a certain extent, and the binding force between the base body and the transition layer is poor; the invention is characterized in that a thermal expansion coefficient of 16 x 10 is arranged between the transition layer and the substrate^-6/K -19×10^-6the/K priming layer can play a certain buffering role, so that the difference of the thermal expansion coefficients of all film layers is reduced, and the binding force is improved.

In one embodiment of the present invention, the primer layer 70, the transition layer 20, the color layer 30 and the connection layer 40 have a total thickness of 1 μm to 4 μm. Therefore, when the layers are tightly combined, the efficiency is improved, and the cost is saved.

In one embodiment of the present invention, the primer layer 70 has a thickness of 50-100 nm. This enables the base body and the transition layer to be connected to each other well.

In one embodiment of the present invention, the transition layer 20 includes a first transition layer 210 and a second transition layer 220 sequentially stacked, and the second transition layer 220 is disposed on a side of the first transition layer 210 away from the base layer 70. The thickness of the transition layer 20 is 100nm-1000nm, the thickness of the first transition layer 210 may be 30nm-50nm, and the thickness of the second transition layer may be 50nm-900 nm. The thickness of first transition layer is less than the thickness of second transition layer, from this, can guarantee the adhesive force on colour layer, can improve ornamental material's wearability simultaneously.

Further, the first transition layer 210 is a metal layer, and specifically, the first transition layer 210 may include at least one of a Ti layer, a Cr layer, and a W layer, and a thermal expansion coefficient of the first transition layer 210 made of a metal material is close to that of the metal substrate 10, so that an internal stress between the transition layer 20 and the substrate 10 may be reduced, and a bonding force between the transition layer 20 and the substrate 10 may be increased.

Further, the second transition layer 220 is a metal silicide layer, and particularly, the second transition layer 220 may include at least one of a TiSi layer, a CrSi layer, and a WSi layer. The second transition layer of the metal silicide can increase the binding force between the color layer 30 and the first transition layer 210, prevent the color layer 30 from falling off, and can improve the wear resistance of the decorative material.

In one embodiment of the present invention, the color layer 30 is a metal carbon silicide layer and/or a metal nitrogen silicide layer, and specifically, the color layer 30 may include at least one of a TiSiC layer, a CrSiC layer, a WSiC layer, a TiSiN layer, a CrSiN layer, and a WSiN layer. The color layer 30 is used as a bottom color layer of the decorative material, so that the decorative material has rich appearance effect, and can also be used as a shielding layer of the coating layer, so that part of light incident to the color layer is reflected out, and interference is generated on the coating layer. Wherein, the thickness of the color layer can be 1um-3 um.

In an embodiment of the present invention, the first transition layer 210 is made of metal, the second transition layer 220 is made of metal silicide, and the color layer 30 is made of metal carbosilicide and/or metal silicide nitride, and preferably, the metals in the first transition layer 210, the second transition layer 220, and the color layer 30 are made of homogeneous metals, so that the bonding force between the layers of the decoration material is better, and the reason for this is presumed to be that the metal silicide in the second transition layer and the metal in the first transition layer can be bonded by the same metal substance, and the metal silicide in the second transition layer and the metal carbosilicide and/or metal silicide nitride in the color layer can be bonded by the same metal substance and silicon, so that the bonding force between the layers is better and the layers are not easy to fall off.

In one embodiment of the present invention, the tie layer 40 and the first sub-coating layer comprise the same material. According to the principle of similarity and compatibility, the connecting layer 40 and the first sub-coating layer which comprise the same material are adopted, and the bonding force between the two layers is good. Wherein the thickness of the connection layer 40 may be 20nm to 300 nm. Preferably, the material of the connection layer 40 includes silicon dioxide (SiO)₂) The material of the first sub-coating layer also comprises silicon dioxide (SiO)₂). This can further improve the bonding force between the color layer 30 and the plated film layer 50.

In an embodiment of the present invention, the decorative material further includes a functional layer, the functional layer is disposed on a side of the first sub-coating layer away from the connecting layer, wherein a thickness of the functional layer is 10-50nm, further, a material of the functional layer includes at least one of gold, silver, copper, aluminum, indium, tin, indium tin alloy and silver aluminum alloy, and the functional layer is disposed to further increase a metal texture of an appearance effect of the decorative material.

As shown in fig. 3, the decorating material may further include an anti-fingerprint layer 60, and the anti-fingerprint layer 60 is disposed on a side of the film coating layer 50 far away from the connecting layer 40. Therefore, the anti-fingerprint layer 60 can play a role in protecting the coating layer 50, and can also improve the wear resistance and anti-fingerprint effect of the decorative material.

In a second aspect of the present invention, a method for preparing a decorative material is provided: providing a substrate; forming a priming layer on one side of the substrate; forming a transition layer on one side of the base layer, which is far away from the base body; forming a color layer on one side of the transition layer far away from the priming layer; forming a connecting layer on one side of the color layer far away from the transition layer; form the coating film layer in one side of colour layer is kept away from on the tie layer, and the coating film layer includes the sub coating film layer of multilayer, and is multilayer sub coating film layer includes high refracting index sub coating film layer and low refracting index sub coating film layer, high refracting index sub coating film layer with low refracting index sub coating film layer establishes in turnPlacing; wherein the base has a thermal expansion coefficient of 13 × 10^-6-15×10^-6K, the coefficient of thermal expansion of the primer layer is 16 x 10^-6-19×10^-6and/K. The preparation method of the decorative material provided by the invention is simple and easy to realize, and the decorative material with a colorful effect and good interlayer bonding force can be prepared.

In a preferred embodiment of the present invention, the material of the substrate 10 includes stainless steel, and the material of the primer layer 70 also includes stainless steel, so that the primer layer 70 and the substrate 10 have the same material, have small difference in thermal expansion coefficient, and have good bonding force therebetween, thereby providing good support for the subsequent film layer.

In a preferred embodiment of the present invention, the sub-coating layer adjacent to the connection layer in the plurality of sub-coating layers is a first sub-coating layer, and the coefficient of thermal expansion of the first sub-coating layer is 3 × 10^-6/K-6×10^-6K, coefficient of thermal expansion of the connection layer of 5X 10^-6/K -10×10^-6And the thermal expansion coefficient of the first sub-coating layer is smaller than that of the connecting layer. Therefore, the bonding force between the coating layer and the color layer can be further improved.

According to the embodiment of the invention, the priming layer, the transition layer, the color layer and the connecting layer are formed in a physical vapor deposition manner, the controllability of the film layers formed by the physical vapor deposition is strong, the compactness and the thermal expansion coefficient of each film layer can be controlled, and thus the bonding force between the film layers is good; the coating layer is formed in a non-conductive electroplating mode, and the coating layer which is formed in a non-conductive electroplating mode and comprises multiple sub-coating layers has a dazzling effect. The two are combined, and a decorative layer with good bonding force and a colorful optical effect can be formed on the substrate.

In one embodiment of the present invention, the conditions for forming the primer layer by physical vapor deposition are: the current is 20A-50A, the voltage is 300-; the step of forming the transition layer by physical vapor deposition comprises: forming a first transition layer by physical vapor deposition and a second transition layer by physical vapor deposition, wherein the conditions for forming the first transition layer by physical vapor deposition are: the current is 10A-40A, the voltage is 250-150V, the power supply current is gradually increased and the power supply voltage is gradually reduced in the deposition process; the conditions for forming the second transition layer by physical vapor deposition are: the current is 15A-35A, the voltage is 150-10V, the power supply current is gradually increased and the power supply voltage is gradually reduced in the deposition process; the conditions for forming the color layer by physical vapor deposition are: the current is 5A-35A, the voltage is 150-10V, and in the deposition process, the power supply current is gradually increased, and the power supply voltage is gradually decreased; the conditions for forming the connection layer by physical vapor deposition are: the current is 5-35A, and the voltage is 50-150V; the conditions for forming the plated film layer by non-conductive plating were: the ion auxiliary voltage is 100V-500V. According to the invention, the speed of the material splashed from the target material is controlled by controlling the changes of current and voltage in the physical vapor deposition process, and the force of the target material impacting the surface of the substrate is indirectly controlled, so that the density and the thermal expansion coefficient of the deposited film layer can be controlled, the effect of the deposited film layer is ensured, the adhesive force of the film layer is improved, and the binding force between the film layers is further improved; and in the step of forming the coating layer in a non-conductive electroplating mode, the thermal expansion coefficient of the coating layer can be controlled by adjusting the voltage of the ion auxiliary accessory of the equipment, so that the thermal expansion coefficients of the coating layer and the connecting layer are close to each other, and the coating layer and the connecting layer have good bonding force.

One embodiment of the invention can further comprise that an anti-fingerprint layer is formed on one side of the coating layer far away from the connecting layer. Specifically, the anti-fingerprint layer can be formed on the surface of the product in the modes of evaporation plating, spraying and dip coating, so that the effect of protecting the film coating layer can be achieved, and the wear resistance and the anti-fingerprint effect of the product can be improved.

Example 1

A finishing material comprising: stainless steel substrates (thermal expansion coefficient 13X 10) laminated in this order^-6K) stainless steel base layer (thermal expansion coefficient 16X 10)^-6A thickness of 50nm,/K, a Ti metal transition layer (thickness of 30 nm), a TiSi transition layer (thickness of 500 nm), a TiSiC color layer (thickness of 1.2 μm), SiO₂Connection layer (thickness 50 nm), SiO₂A first sub-coating layer (thickness of 10 nm) and Ti₃O₅Coating film layer (thickness 20 nm), SiO₂Coating film (thickness 20 nm), Ti₃O₅Coating layer (thickness 40 nm), SiO₂Coating film layer (thickness of 30 nm) and Ti₃O₅A film layer (thickness 20 nm) and an anti-fingerprint layer of SiO₂The thermal expansion coefficient of the connecting layer is 6 multiplied by 10^-6/K，SiO₂The thermal expansion coefficient of the first sub-coating layer is 5 multiplied by 10^-6/K；

The preparation process of the decorative material comprises the following steps:

(1) providing a coefficient of thermal expansion of 13 x 10^-6A stainless steel substrate of/K;

(2) forming a thermal expansion coefficient of 16 x 10 on the surface of a stainless steel substrate by physical vapor deposition^-6The thick bottom of the stainless steel priming layer is 50nm, the power supply current is gradually increased in the deposition process, the power supply voltage is gradually reduced, the current range is between 20A and 50A, and the voltage range is between 300-200V;

(3) forming a Ti metal transition layer with the thickness of 30nm on one side of the stainless steel priming layer far away from the stainless steel substrate through physical vapor deposition, wherein the power supply current is gradually increased and the power supply voltage is gradually reduced in the deposition process, the current range is between 10A and 40A, and the voltage range is between 250V and 150V;

(4) forming a TiSi transition layer with the thickness of 600nm on one side of the Ti metal transition layer, which is far away from the stainless steel bottom layer, through physical vapor deposition, wherein the power supply current is gradually increased and the power supply voltage is gradually reduced in the deposition process, the current range is between 15A and 35A, and the voltage range is between 150V and 10V;

(5) forming a TiSiC color layer with the thickness of 1 mu m on one side of the TiSi transition layer, which is far away from the Ti metal transition layer, through physical vapor deposition, wherein the power supply current is gradually increased and the power supply voltage is gradually reduced in the deposition process, the current range is between 5A and 35A, and the voltage range is between 150V and 10V;

(6) forming SiO with the thickness of 30nm on the side of the TiSiC color layer far away from the TiSi transition layer by physical vapor deposition₂A connection layer, in the deposition process, the current is 20A, the voltage range is 100V, and SiO is formed₂The thermal expansion coefficient of the connecting layer is 6 multiplied by 10^-6/K；

(7) In SiO₂One side of the connecting layer, which is far away from the TiSiC color layer, is sequentially formed by non-conductive electroplating to contain SiO with the thickness of 10nm₂First sub-coating layer of Ti with thickness of 20nm₃O₅Film-coated layer of SiO with thickness of 20nm₂Film-coated layer of Ti of 40nm thickness₃O₅Film-coated layer of SiO with thickness of 30nm₂Coating layer of coating layer, Ti with thickness of 20nm₃O₅Coating a film layer, wherein the ion auxiliary voltage in the process of forming the film layer by non-conductive electroplating is 300V to form SiO₂The thermal expansion coefficient of the first sub-coating layer is 5 multiplied by 10^-6/K；

(8) And forming a fingerprint-proof layer on one side of the film coating layer, which is far away from the connecting layer, so as to obtain the decorative material.

Example 2

The structure and the preparation process of the decorative material in the embodiment are basically the same as those in the embodiment 1, except that the Ti metal transition layer is replaced by a Cr metal transition layer, the TiSi transition layer is replaced by a CrSi transition layer, and the TiSiC color layer is replaced by a CrSiN color layer.

Example 3

The structure and preparation process of the decorative material of this example are substantially the same as those of example 1, except that SiO₂During the deposition of the connecting layer, the current is 25A, the voltage range is 80V, and SiO is formed₂The thermal expansion coefficient of the connecting layer is 7 x 10^-6The ion auxiliary voltage in the process of forming a coating layer by non-conductive electroplating is 300V to form first sub SiO₂The thermal expansion coefficient of the coating layer is 5 multiplied by 10^-6/K。

Example 4

The structure and the preparation process of the decorating material of the embodiment are basically the same as those of the embodiment 1, except that the thickness of the Ti metal transition layer is 50nm, the thickness of the TiSi transition layer is 300nm, and the thickness of the TiSiC color layer is 1 μm.

Example 5

The structure and the preparation process of the decorative material of this example are substantially the same as those of example 1, except that an indium metal functional layer (with a thickness of 30 nm) is further included, and the indium metal functional layer is formed on Ti₃O₅Coating layer and SiO₂And the functional layer is formed between the coating layers in a non-conductive electroplating mode.

Comparative example 1

The structure and preparation process of the decorating material of this comparative example are substantially the same as those of example 1, except that the stainless steel primer layer is not included.

Comparative example 2

The structure and preparation process of the decorating material of this comparative example were substantially the same as those of example 1, except that SiO was not contained₂And (7) connecting the layers.

Comparative example 3

The structure and preparation process of the decorating material of the comparative example are basically the same as those of example 1, except that the stainless steel primer layer and SiO are not included₂Connection layer, SiO₂First sub-coating layer, Ti₃O₅Coating layer, SiO₂Film-coated layer, Ti₃O₅Coating layer, SiO₂Film-coated layer, Ti₃O₅And (7) coating a film layer.

Comparative example 4

The structure and the preparation process of the decorating material of the comparative example are basically the same as those of the example 1, except that the decorating material does not contain a stainless steel bottom layer, a Ti metal transition layer, a TiSi transition layer, a TiSiC color layer and SiO₂And (7) connecting the layers.

Performance testing

1. And (3) testing the hundred-lattice adhesive force:

a. the surface area of a test sample is more than or equal to 10mm by using a hundred-grid knife (the angle of the knife point is 15-30 degrees)²The positions of the sample are drawn into 10 multiplied by 10 grids of 1mm multiplied by 1mm, and each drawn line is deep to the bottom layer of the sample;

b. brushing fragments in the test area with a brush;

c. firmly sticking the tested small network by using an adhesive tape (No. 3M600 adhesive tape or the like) with the adhesive force of 350g/cm 2-400 g/cm2, and wiping the adhesive tape with an eraser to increase the contact area and force of the adhesive tape and the tested area;

d. grasping one end of the adhesive tape by hand, rapidly pulling off the adhesive tape at 90 degrees, carrying out 2 times of same tests at the same position, observing the falling condition of the plating layer, and grading as follows:

5B: the mesh did not flake off;

4B: the area of the peeled portion is not more than 5% of the area of the adhesive tape in contact with the surface;

3B: the area of the peeled portion is more than 5% and not more than 15% of the area of the adhesive tape in contact with the surface;

2B: the area of the peeled portion is more than 15% and not more than 35% of the area of the adhesive tape in contact with the surface;

1B: the area of the peeled portion is more than 35% and not more than 65% of the area of the adhesive tape in contact with the surface;

0B: the area of the peeled portion is more than 65% larger than the area of the tape in contact with the surface;

2. appearance effect:

a. the test sample is placed in a position perpendicular to the human eye light to observe the product color,

b. the test sample is rotated to a human eye ray angle of 60 degrees and then the color is observed,

c. the test sample is rotated to a human eye light angle of 150 degrees and the color is observed,

judging that the colorful appearance effect exists when the colors of the three angles are different;

when the same color is observed at three angles, the effect of the dazzling appearance is judged to be not.

And (3) testing results: the decorating materials of examples 1 to 5 and comparative examples 1 to 4 were respectively tested for their performance, and the test results are shown in table 1:

TABLE 1

	Binding force	Appearance effect
			Example 1	5B	Has colorful appearance effect
Example 2	5B	Has colorful appearance effect
			Example 3	5B	Has colorful appearance effect
Example 4	5B	Has colorful appearance effect
			Example 5	5B	Has colorful appearance effect
Comparative example 1	1B	Has colorful appearance effect
			Comparative example 2	2B	Has colorful appearance effect
Comparative example 3	1B	Non-dazzle color appearance effect
			Comparative example 4	1B	Has colorful appearance effect

As can be seen from table 1, compared with the decorative materials of comparative examples 1 to 4, the decorative material of the present invention (i.e., examples 1 to 5) can achieve a dazzling effect, and simultaneously can ensure the bonding force between the layers of the decorative material, thereby avoiding the problem of coating falling off during use.

In the description herein, references to the term "embodiment" mean that a particular feature, structure, material, or characteristic described in connection with the embodiment is included in at least one embodiment of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction. In addition, it should be noted that the terms "first" and "second" in this specification are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. A decorative material, comprising:

a substrate;

the priming layer is arranged on one side of the base body;

the transition layer is arranged on one side, far away from the base body, of the base layer;

the color layer is arranged on one side, far away from the bottoming layer, of the transition layer;

the connecting layer is arranged on one side, far away from the transition layer, of the color layer;

the coating layer is arranged on one side of the connecting layer, which is far away from the color layer;

the coating layer comprises a plurality of sub-coating layers which are sequentially stacked, the sub-coating layers comprise high-refractive-index sub-coating layers and low-refractive-index sub-coating layers, and the high-refractive-index sub-coating layers and the low-refractive-index sub-coating layers are alternately arranged;

wherein the base has a thermal expansion coefficient of 13 × 10^-6/K -15×10^-6K, the coefficient of thermal expansion of the primer layer is 16 x 10^-6/K -19×10^-6/K。

2. The trim material of claim 1, wherein the material of the base includes stainless steel and the material of the primer layer includes stainless steel.

3. The decorative material of claim 1 wherein the sub-coating adjacent to said tie layer of said plurality of sub-coatings is a first sub-coating, said first sub-coating having a coefficient of thermal expansion of 3 x 10^-6/K -6×10^-6K, the coefficient of thermal expansion of the connecting layer is 5 x 10^-6/K -10×10^-6And the thermal expansion coefficient of the first sub-coating layer is smaller than that of the connecting layer.

4. The upholstery material as claimed in claim 3, wherein the material of the tie layer comprises silica and the material of the first sub-coat layer comprises silica.

5. The upholstery material as claimed in claim 1, wherein said primer layer, said transition layer, said color layer and said connecting layer are physical vapor deposition layers, and said coating layer is a non-conductive plating layer.

6. The upholstery material as claimed in claim 1, wherein the coefficients of thermal expansion of the primer layer, the transition layer, the color layer and the tie layer are in a gradually decreasing trend;

preferably, the total thickness of the priming layer, the transition layer, the color layer and the connecting layer is 1-4 μm;

preferably, the thickness of the priming layer is 50nm-100nm, the thickness of the transition layer is 100nm-1000nm, the thickness of the color layer is 1 μm-3 μm, and the thickness of the connection layer is 20nm-300 nm.

7. The decorative material of claim 1, wherein the transition layer comprises a first transition layer and a second transition layer which are sequentially stacked, and the second transition layer is arranged on the side of the first transition layer far away from the base layer;

preferably, the thickness of the first transition layer is 30nm-50nm, and the thickness of the second transition layer is 50nm-900 nm;

preferably, the expansion coefficients of the first transition layer, the second transition layer and the color layer have a gradually decreasing trend;

more preferably, the first transition layer is a metal layer, the second transition layer is a metal silicide layer, and the color layer is a metal carbon silicide layer and/or a metal nitrogen silicide layer.

8. The decorative material of claim 3, further comprising a functional layer disposed on a side of the first sub-coating layer remote from the tie layer;

preferably, the functional layer includes at least one of a gold layer, a silver layer, a copper layer, an aluminum layer, an indium layer, a tin layer, an indium tin alloy layer, and a silver aluminum alloy layer.

9. The upholstery material as claimed in claim 1, further comprising an anti-fingerprint layer provided on a side of said coating layer remote from said connecting layer.

10. A preparation method of a decorative material is characterized by comprising the following steps:

providing a substrate;

forming a primer layer on one side of the substrate;

forming a transition layer on one side of the base layer, which is far away from the base body;

forming a color layer on one side of the transition layer far away from the priming layer;

forming a connecting layer on one side of the color layer far away from the transition layer;

forming a coating layer on one side of the connecting layer, which is far away from the color layer, wherein the coating layer comprises a plurality of sub-coating layers, the sub-coating layers comprise a high-refractive-index sub-coating layer and a low-refractive-index sub-coating layer, and the high-refractive-index sub-coating layer and the low-refractive-index sub-coating layer are alternately arranged;

11. The method of claim 10, wherein the material of the substrate comprises stainless steel and the material of the primer layer comprises stainless steel.

12. The method of claim 10 wherein a sub-layer of said plurality of sub-layers adjacent to said tie layer is a first sub-layer, said first sub-layer having a coefficient of thermal expansion of 3 x 10^-6/K-6×10^-6K, the coefficient of thermal expansion of the connecting layer is 5 x 10^-6/K -10×10^-6And the thermal expansion coefficient of the first sub-coating layer is smaller than that of the connecting layer.

13. The method of manufacturing according to claim 10, wherein: forming the priming layer, the transition layer, the color layer and the connecting layer in a physical vapor deposition mode; and forming the coating layer in a non-conductive electroplating mode.

14. The method of manufacturing according to claim 13, wherein:

the conditions for forming the primer layer by physical vapor deposition were: the current is 20A-50A, the voltage is 300-;

the step of forming the transition layer by physical vapor deposition comprises: forming a first transition layer by physical vapor deposition and a second transition layer by physical vapor deposition, wherein: the conditions for forming the first transition layer by physical vapor deposition are: the current is 10A-40A, the voltage is 250-150V, the power supply current is gradually increased and the power supply voltage is gradually reduced in the deposition process; the conditions for forming the second transition layer by physical vapor deposition are: the current is 15A-35A, the voltage is 150-10V, the power supply current is gradually increased and the power supply voltage is gradually reduced in the deposition process;

the conditions for forming the color layer by physical vapor deposition are: the current is 5A-35A, the voltage is 150-10V, and in the deposition process, the power supply current is gradually increased, and the power supply voltage is gradually decreased;

the conditions for forming the connection layer by physical vapor deposition are: the current is 5-35A, and the voltage is 50-150V;

the conditions for forming the plated film layer by non-conductive plating were: the ion auxiliary voltage is 100V-500V.

15. The method of manufacturing according to claim 10, wherein: and the coating layer is formed on one side far away from the connecting layer.

16. An electronic device characterized in that it comprises the decorating material of claims 1 to 9.