阅读说明：本技术 壳体组件、制备方法和电子设备 (Shell assembly, preparation method and electronic equipment ) 是由 叶留留 于 2020-07-31 设计创作，主要内容包括：本申请公开了一种壳体组件,该壳体组件包括：基材,形成基材的材料包括塑胶、金属和玻璃中的任一种；以及力致变色层。力致变色层位于基材的一侧,力致变色层含有力致变色改性的聚合物。该透壳体组件由于具有力致变色层,因此仅需在壳体表面单位面积施加一定的压力,就可使其发生颜色变化。由此,可通过该简单结构实现壳体组件受压变色的效果,增添了使用过程中的乐趣。(The application discloses casing subassembly, this casing subassembly includes: a substrate formed of a material including any one of plastic, metal and glass; and a force-chromic layer. The mechanochromic layer is located on one side of the substrate and contains a mechanochromic-modified polymer. The transparent shell component has the force-variable color layer, so that the color of the transparent shell component can be changed only by applying certain pressure on the surface unit area of the shell. Therefore, the effect of color change of the shell assembly under pressure can be realized through the simple structure, and the fun in the use process is added.)

1. A housing assembly, comprising:

a substrate formed of a material including any one of plastic, metal, and glass; and

a mechanochromic layer on one side of the substrate, the mechanochromic layer comprising a mechanochromic-modified polymer.

2. The housing assembly of claim 1 wherein said mechanochromic modified polymer comprises a polyurethane that is at least one of a spiropyran-based modified polyurethane, a tetraphenylethylene-based modified polyurethane, and an imidazole-based modified polyurethane.

3. The housing assembly of claim 2, wherein the polyurethane has a number average molecular weight distribution ranging from 15000 to 50000.

4. The housing assembly of claim 2, wherein a viscosity of a slurry forming the mechanochromic layer, the slurry containing the mechanochromic-modified polymer, is 500 to 1500 mPa-s.

5. The housing assembly of claim 4, wherein the slurry comprises:

80 parts by weight of the mechanochromic modified polymer; 0.5-1.0 part by weight of a mechanochromic modifier; 0.1-1 parts by weight of a leveling agent; 0.5 to 1 part by weight of a thickener.

6. The housing assembly of claim 1, further comprising:

and the scratch-resistant layer is positioned on one side of the force-induced color changing layer, which is far away from the base material.

7. The housing assembly of claim 6, wherein the scratch resistant layer comprises a scratch resistant modified polyurethane.

8. The housing assembly of claim 7, wherein the molecular weight of the polyurethane in the scratch resistant layer is greater than the molecular weight of the polyurethane contained in the force chromic layer;

optionally, the polyurethane in the scratch-resistant layer is polyester polyurethane with the number average molecular weight of 50000-100000;

optionally, the viscosity of the slurry for forming the scratch-resistant layer is 100-600 mPa & s;

optionally, the slurry forming the scratch resistant layer comprises:

70-90 parts by weight of the scratch-resistant modified polyurethane; 1-3 parts by weight of a hand feeling agent; 0.3 to 1 part by weight of a leveling agent.

9. A method of making the housing assembly of any of claims 1-8, comprising:

forming a mechanochromic layer on a substrate, the material forming the substrate including any one of plastic, metal, and glass, the mechanochromic layer containing a mechanochromic-modified polymer.

10. The method of claim 9, further comprising: and forming a scratch-resistant layer on one side of the force-induced color changing layer far away from the substrate.

11. The method of claim 9, comprising:

providing a slurry for forming the mechanochromic layer: 80 parts by weight of the mechanochromic modified polymer; 0.5-1.0 part by weight of a mechanochromic modifier; 0.1-1 part by weight of a leveling agent and 0.5-1 part by weight of a thickening agent are added into a mixing container and stirred for 30-60 min;

providing a slurry for forming the scratch resistant layer: 70-90 parts by weight of scratch-resistant modified polyurethane; adding 1-3 parts by weight of a hand feeling agent and 0.3-1 part by weight of a flatting agent into a mixing container, and stirring for 20-40 min;

arranging the slurry for forming the mechanochromic layer on one side of the matrix in a coating, spraying or silk-screen mode, drying at 80-120 ℃ for 5-10 min, and then cooling to form the mechanochromic layer;

and spraying the slurry of the scratch-resistant layer to one side, far away from the substrate, of the mechanochromic layer, and drying at 80-120 ℃ for 3-5 min to obtain the shell assembly.

12. An electronic device, comprising:

the housing assembly of any one of claims 1-8; and

the battery and the mainboard are located in the accommodating space defined by the shell assembly, and the mainboard is electrically connected with the battery.

Technical Field

The invention relates to the field of housings, in particular to a housing assembly, a preparation method and an electronic device.

Background

Along with the continuous improvement of terminal technology, electronic equipment such as mobile phones brings convenience to people, and meanwhile dependence of people is stronger and stronger. Although the popularity and necessity of electronic devices has led to an increasing abundance of electronic device models, it is still insufficient to satisfy the diverse needs of people. How to add vitality and fun in the using process becomes the problem to be solved. The current housing assembly in the related art is generally manufactured by spraying, printing, coating, and the like, and the color of the housing assembly is fixed. Although the above problems can be alleviated to some extent by introducing an electrochromic assembly into the housing assembly, the electrochromic assembly can change the color after the electrochromic material layer on the surface of the outer shell is subjected to electrochemical reaction by controlling the current, so that the color of the housing assembly can be changed. However, the device adopted by the technology is complex and has large power consumption and no universality. For example, by coating a temperature-sensitive color-changing ink on the surface of the shell substrate, the shell pattern can change according to the ambient temperature, but the color-changing condition of the technology depends on the ambient temperature, and the color-changing scene is limited. The artificial is not controllable, thereby directly influencing the color changing efficiency.

Accordingly, current housing assemblies, methods of manufacture, and electronic devices remain to be improved.

Disclosure of Invention

The present application is directed to solving, at least to some extent, one of the technical problems in the related art.

In one aspect of the present application, the present invention provides a housing assembly comprising: a substrate formed of a material including any one of plastic, metal, and glass; and a force-chromic layer. The mechanochromic layer is located on one side of the substrate, and the mechanochromic layer contains a mechanochromic-modified polymer. The shell component is provided with the force-variable color layer, so that the color of the shell component can be changed only by applying certain pressure on the surface unit area of the shell component. Therefore, the effect of color change of the shell assembly under pressure can be realized through the simple structure, and the interest in the use process is added.

In another aspect of the invention, the invention features a method of making a housing assembly, the method including: forming a mechanochromic layer on a substrate, the material forming the substrate including any one of plastic, metal and glass, the mechanochromic layer containing a mechanochromic-modified polymer. The housing assembly may be the same as described above, and thus the housing assembly prepared by the method has all the features and advantages of the housing assembly described above, and will not be described herein again. In general, the shell assembly has at least one of the advantages of low implementation cost, high added value of products and the like.

In yet another aspect of the present invention, the present invention provides an electronic device including: a housing assembly; and the battery and the mainboard are positioned in the accommodating space defined by the shell assembly, and the mainboard is electrically connected with the battery. Therefore, on the premise of meeting the performance of a conventional battery cover coating, the color concentration and the color-changing visual effect on the surface of the shell component can be adjusted by controlling the stress of the force-changing layer, and the requirements of different crowds on colors are met.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 shows a schematic structural view of a housing assembly according to one embodiment of the present invention;

FIG. 2 shows a schematic structural view of a housing assembly according to yet another embodiment of the invention;

FIG. 3 shows a schematic flow diagram of a method of preparing a housing assembly according to the present invention;

fig. 4 shows a schematic structural diagram of an electronic device according to an embodiment of the invention.

Description of reference numerals:

100: a housing assembly; 10: a substrate; 20: a force-sensitive color changing layer; 30: and a scratch-resistant layer.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar 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 drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.

In one aspect of the present application, a housing assembly is presented. Referring to fig. 1, the housing assembly 100 includes a substrate 10, and a force-chromic layer 20. The force chromic layer 20 is located on one side of the substrate because the force chromic layer 20 contains a force chromic modified polymer. Therefore, a certain pressure is applied to a unit area of the surface of the housing assembly 100 to change the color of the housing assembly. Therefore, the effect of color change of the shell assembly under pressure is realized through the simple structure, and the interest in the use process is added.

For ease of understanding, the following brief description of the principles by which the housing assembly achieves the above-described advantageous effects:

as described above, in order to solve the problems that the current color of the housing assembly is fixed and not changed, and the vitality and fun are lacked during the use process, electrochromic and temperature-sensitive materials are applied to the housing assembly. The mechanochromic material is subjected to chemical bond breakage under the action of stress as long as a certain acting force is applied to the mechanochromic material, and the color is changed. After the external force is removed, the original color can be restored. Therefore, the force-induced color-changing material can change color without the action of a light source, temperature, a circuit and the like, and can be applied to the shell assembly, so that the shell assembly can change color under the operation of a user, and the use pleasure is improved. The inventor finds that the common mechanochromic material has poor film forming property and cannot be directly applied to the coating of the shell component. The high molecular material has good film-forming property, but does not have the characteristic of force-induced discoloration. The material of the mechano-discoloration layer provided by the application adopts a chemical grafting method to connect the mechano-discoloration material and a high polymer material in a chemical bond form, so that a mechano-discoloration modified high polymer material with good film forming property can be obtained, and a shell component with a mechano-discoloration function can be obtained.

According to some embodiments of the present invention, the mechanochromic layer 20 may include a mechanochromic modified polymer, such as a spiropyran-based modified polyurethane, a tetraphenyl vinyl-based modified polyurethane, an imidazole-based modified polyurethane, or the like. Specifically, the modified polyurethane may be a spiropyran-based modified polyurethane. The modified group such as the spiropyran has the characteristic of mechanochromism, so that the polyurethane modified by the spiropyran also has the characteristic of mechanochromism, and slurry with the same characteristic of mechanochromism can be formed, and a mechanochromism layer is further formed, so that the interest of the shell assembly in the using process is added. And the polyurethane has better film-forming property, so the force-induced color changing layer containing the modified polyurethane can better form a film layer structure on the surface of a base material and has the force-induced color changing property. Specifically, a modified group such as spiropyran may be grafted on a polyurethane molecular chain.

According to some embodiments of the present invention, the mechanochromic layer may be formed from a slurry containing the above-described mechanochromic-modified polymer. In particular, the slurry may include a mechanochromic modified polymer, a mechanochromic modifier, a leveling agent, and a thickener. The mechano-discoloration modifier can further improve the mechano-discoloration effect of the mechano-discoloration layer, so that the discoloration is more obvious. Levelling agents and thickeners can improve the film-forming properties of the pastes, so that force-sensitive color-changing layers which are more readily levelled can be obtained. Specifically, 80 parts by weight of the mechanochromic modified polymer, 0.5-1.0 part by weight of the mechanochromic modifier, 0.1-1 part by weight of the leveling agent and 0.5-1 part by weight of the thickener are added into a mixing container, and stirred for 30-60 min to obtain mechanochromic layer slurry. The skilled person can make adjustment and selection according to the actual situation.

According to some embodiments of the present invention, the number average molecular weight of the mechanochromic-modified polymer forming the mechanochromic layer is not particularly limited. For example, the mechanochromic modified polymer can have a number average molecular weight distribution in the range of 15000 to 50000. The force-induced color changing layer is positioned on one side of the substrate, and the polymer with the molecular weight within the range can be well adhered to the substrate formed by most materials, so that the force-induced color changing layer can be firmly formed on one side of the substrate. Specifically, when the molecular weight is less than 15000, the mechanical discoloration layer slurry has poor film forming property, the surface of the mechanical discoloration layer is sticky, and the mechanical strength of the mechanical discoloration layer is low, so that the basic performance requirements cannot be met. When the molecular weight is more than 50000, the viscosity of the mechanochromic layer slurry is too high, so that the leveling property of the slurry is poor, a uniform and compact film layer cannot be formed on the surface of a base material, a flat surface cannot be formed, and the basic performance requirement cannot be met.

According to some embodiments of the present invention, the viscosity of the slurry forming the force-color changing layer is not particularly limited, and for example, the viscosity of the slurry forming the force-color changing layer may be in a range of 500 to 1500mPa · s. The mechanochromic layer paste having the viscosity within the above range can have a good degree of adhesion to a substrate formed of a plurality of materials, and thus the mechanochromic layer can be formed more firmly on one side of the substrate. Specifically, when the viscosity of the slurry is less than 500Pa · s, the fluidity of the mechanochromic slurry is poor, which is disadvantageous in forming a mechanochromic layer having an appropriate thickness. When the viscosity of the slurry is more than 1500mPa & s, the adhesive force between the slurry of the force-induced color changing layer and the base material is poor, and the surface of the formed force-induced color changing layer is uneven and not enough to meet the performance requirement. It will be appreciated by those skilled in the art that whether the bond between the force chromic layer and the substrate is strong is related to both the viscosity of the force chromic layer and the type of substrate. Therefore, the material and surface tension of the substrate can be varied. The viscosity of the slurry of the mechanochromic layer was determined.

Referring to fig. 2, the housing assembly 100 may further include a scratch resistant layer 30 on a side of the force chromic layer remote from the substrate 10, according to one embodiment of the present invention. The scratch-resistant layer can avoid the falling phenomenon caused by the friction of external force on the force-induced color changing layer in the using process.

According to one embodiment of the invention, the scratch resistant layer comprises a scratch resistant modified polyurethane, such as a polyester polyurethane or the like.

According to some embodiments of the present invention, the scratch resistant layer may be formed from a scratch resistant modified polyurethane. Specifically, the slurry may include a scratch-resistant modified polyurethane, a hand agent, and a leveling agent. For example, 70-90 parts by weight of the scratch-resistant modified polyurethane, 1-3 parts by weight of the hand feeling agent and 0.3-1 part by weight of the leveling agent are added into a mixing container, and stirred for 30-60 min to obtain the scratch-resistant layer slurry. The skilled person can make adjustment and selection according to the actual situation.

According to some embodiments of the present invention, in order to further improve the bonding force between the scratch resistant layer and the mechanochromic layer, the molecular weight of the scratch resistant modified polyurethane in the scratch resistant layer is greater than the molecular weight of the mechanochromic modified polymer. For example, the number average molecular weight distribution range of the scratch-resistant modified polyurethane in the scratch-resistant layer is 50000-100000. The scratch-resistant layer is positioned on one side, away from the base material, of the force-induced discoloration layer, polyurethane with the molecular weight within the range can be well bonded with the force-induced discoloration layer formed by most materials, and then the scratch-resistant layer can be firmly formed on one side, away from the base material, of the force-induced discoloration layer. Specifically, when the molecular weight is less than 50000, the mechanical strength of the scratch-resistant layer formed by the scratch-resistant slurry is low, and the scratch resistance of the surface is poor, so that the basic performance requirements cannot be met. When the molecular weight is more than 100000, the viscosity of the scratch resistant layer slurry is too high, resulting in poor leveling property and being unfavorable for forming a flat surface.

According to some embodiments of the present invention, the viscosity of the slurry forming the scratch resistant layer is not particularly limited, and for example, the viscosity of the slurry forming the scratch resistant layer may be in the range of 100 to 600mPa · s. The scratch-resistant layer slurry with the viscosity within the range can be well adhered to the force-induced color changing layer formed by most materials, so that the scratch-resistant layer can be firmly formed on the side, away from the substrate, of the force-induced color changing layer. Specifically, when the viscosity of the slurry is less than 100Pa · s, the fluidity of the slurry for the scratch resistant layer is poor, and it is not favorable for forming a scratch resistant layer having an appropriate thickness. When the viscosity of the slurry is more than 600 mPas, the adhesive force of the slurry of the scratch-resistant layer and the base material is poor, and the surface of the formed scratch-resistant layer is uneven and not enough to meet the basic performance requirement. It will be appreciated by those skilled in the art that whether the bond between the force-chromic layer and the scratch resistant layer is strong is related to the viscosity of both the force-chromic layer and the scratch resistant layer. The viscosity of the paste of the scratch protection layer can therefore be determined here on the basis of parameters such as the viscosity of the mechanochromic layer, the molecular weight of the polyurethane contained, etc.

In another aspect of the invention, the invention features a method of making a housing assembly, the method including: forming a mechanochromic layer on a substrate, the material forming the substrate including any one of plastic, metal and glass, the mechanochromic layer containing a mechanochromic-modified polymer. The housing assembly may be the same as described above, and thus the housing assembly prepared by the method has all the features and advantages of the housing assembly described above, and will not be described herein again. In general, the shell assembly has at least one of the advantages of low implementation cost, high added value of products and the like.

In particular, with reference to fig. 3, the method may comprise the steps of:

s100: providing a paste for forming the mechanochromic layer

According to an embodiment of the invention, a mechanochromic paste is formed at this step. The position, material and functioning principle of the mechanochromic coating comprising the mechanochromic paste have been described in detail above and will not be described in detail here. For example, according to some embodiments of the present invention, the mechanochromic paste may be obtained by mixing and stirring a certain proportion of the spiropyran-based modified polyurethane, the spiropyran-based mechanochromic material monomer, the leveling agent, and the thickener.

For example, 80 parts by weight of a mechanochromic modified polymer; 0.5-1.0 part by weight of a mechanochromic modifier; 0.1-1 part by weight of leveling agent and 0.5-1 part by weight of thickening agent are added into a mixing container and stirred for 30-60 min.

S200: providing a slurry for forming the scratch resistant layer

According to an embodiment of the invention, a scratch-resistant layer slurry is formed at this step. As will be appreciated by those skilled in the art, scratch resistant layer slurries are used to form common functional coatings. For example, according to some embodiments of the present invention, the scratch-resistant layer slurry may be obtained by mixing and stirring a certain proportion of the scratch-resistant modified polyurethane, the hand feeling agent and the leveling agent.

For example, 70-90 parts by weight of scratch-resistant modified polyurethane; 1-3 parts by weight of a hand feeling agent and 0.3-1 part by weight of a flatting agent are added into a mixing container and stirred for 20-40 min.

It should be specifically noted here that the order of preparing the mechanochromic layer paste and preparing the scratch resistant layer paste is not particularly limited, and may be adjusted as necessary by those skilled in the art. That is, the mechanochromic layer paste may be prepared first or the scratch resistant layer paste may be prepared first.

S300: forming a mechanochromic layer on a substrate

According to an embodiment of the invention, a force chromic housing assembly is formed at this step. For example, according to some embodiments of the present invention, the mechanochromic paste prepared previously is placed on the surface of a substrate, dried, and cooled for use. The specific manner of disposing the mechanochromic paste on the surface of the substrate is not particularly limited, and may be, for example, at least one of scraping, spraying, and screen printing. Specifically, the slurry can be disposed on the surface of the substrate by scraping, spraying or silk-screen printing. And then drying at 80-120 ℃ for 5-10 min, and cooling to form the mechanochromic layer.

According to an embodiment of the present invention, in order to further improve the performance of the housing assembly prepared by the method, after the mechanochromic layer is formed, the scratch-resistant layer slurry prepared in the previous step can be sprayed on the surface of the mechanochromic layer, and the glass housing assembly with mechanochromic property can be obtained after drying and cooling. Specifically, the drying condition can be drying at 80-120 ℃ for 3-5 min.

In yet another aspect of the present invention, the present invention provides an electronic device, refer to fig. 4. The electronic device includes: a housing assembly 100; and the battery and the mainboard are positioned in the accommodating space defined by the shell assembly, and the mainboard and the battery are electrically connected. Therefore, on the premise of meeting the performance of a conventional battery cover coating, the color concentration and the color-changing visual effect on the surface of the shell component can be adjusted by controlling the stress of the force-changing layer, and the requirements of different crowds on colors are met.

The following embodiments are provided to illustrate the present application, and should not be construed as limiting the scope of the present application. The examples, where specific techniques or conditions are not indicated, are to be construed according to the techniques or conditions described in the literature in the art or according to the product specifications. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products commercially available.