Process for realizing highlight on mobile phone cover by glass fibers and mobile phone cover

Abstract

The invention relates to the technical field of mobile phone cover preparation, in particular to a technology for achieving highlight on a mobile phone cover through glass fibers and the mobile phone cover, and the technology comprises the following steps that S1, epoxy resin and ceramic powder are mixed, an activating agent is added for treatment, and a modified resin diaphragm is prepared; s2, glass fiber cloth is pretreated, and glass fiber prepregs are obtained; s3, at least three layers of glass fiber cured sheets and modified resin membranes are stacked and laid, a mold is placed, integral forming is achieved through hot pressing, and the mobile phone cover substrate is obtained; and S4, primer, intermediate paint and highlight paint are sequentially sprayed to the surface of the mobile phone cover base plate, the highlight effect of the mobile phone cover is achieved, and the highlight mobile phone cover is obtained. According to the technology for achieving the highlight on the mobile phone cover through the glass fiber, the technical problem that the highlight cannot be achieved on the surface due to the fact that braided wires on the surface of the glass fiber are uneven is further solved, and the product prepared through the technology has more excellent performance.

Description

Technical Field

[0001] The invention relates to the technical field of preparation of mobile phone covers, and in particular to a process for achieving high gloss on a mobile phone cover using glass fiber and the mobile phone cover. Background Art

[0002] Mobile phones have now become an indispensable tool in people's lives, and people have higher and higher requirements for mobile phones. As one of the most important accessories to protect mobile phones, the back cover of a mobile phone not only has a certain supporting strength or toughness to support the mobile phone, but also its aesthetics and comfort are what users pursue. Existing mobile phone back covers usually use glass fiber. After the 3D structure of the glass fiber material is formed, the glass fiber braided wire on the surface is uneven and difficult to completely cover. Most mobile phone covers can only use a matte surface effect to further cover the braided wire, but cannot achieve a high-gloss effect on the surface of the mobile phone. Summary of the invention

[0003] In order to solve the technical problem that the existing mobile phone cover cannot cover the braided wires and cannot achieve a high-gloss surface after the glass fiber material 3D structure is formed, the present invention provides a process for achieving high gloss on the mobile phone cover with glass fiber and a mobile phone cover.

[0004] In order to achieve the above object, the present invention provides the following technical solution: a process for achieving high gloss on a mobile phone cover with glass fiber, comprising the following steps:

[0005] Step S1: mixing epoxy resin and ceramic powder, adding an activator for treatment, and preparing a modified resin membrane;

[0006] Step S2: pretreating the glass fiber cloth to obtain a glass fiber prepreg;

[0007] Step S3: stacking at least three layers of glass fiber solidified sheets and modified resin film sheets, placing a mold, and performing integrated molding by hot pressing to obtain a mobile phone cover substrate;

[0008] Step S4: spraying primer, intermediate paint and high-gloss topcoat on the surface of the mobile phone cover substrate in sequence to achieve a high-gloss effect of the mobile phone cover and obtain a high-gloss mobile phone cover.

[0009] Preferably, the amount of the ceramic powder is 3-5% of the total amount of the epoxy resin.

[0010] Preferably, the glass fiber solidified sheet is provided with four layers, namely a first glass fiber solidified sheet, a second glass fiber solidified sheet, a third glass fiber solidified sheet, and a fourth glass fiber solidified sheet stacked in sequence, the first glass fiber solidified sheet and the fourth glass fiber solidified sheet are made of 1080 electronic grade glass fiber cloth, and the second glass fiber solidified sheet and the third glass fiber solidified sheet are made of 2116 electronic grade glass fiber cloth.

[0011] Preferably, step S4 comprises the following steps:

[0012] Step S41: spraying a primer on the mobile phone cover substrate, and performing a baking and curing process after the spraying is completed to form a primer layer;

[0013] Step S42: after spraying the primer, placing it in a magnetron coating machine for magnetron optical sputtering to form a coating layer;

[0014] Step S43: spraying a mid-coat on the coating layer, and performing a baking and curing treatment again after the spraying is completed to form a mid-coat layer;

[0015] Step S44: spraying a high-gloss topcoat on the surface of the middle paint layer, and performing a baking and curing treatment again after spraying to form a high-gloss topcoat layer.

[0016] Preferably, the material of the coating layer is one or more of silicon dioxide, titanium oxide, and aluminum oxide.

[0017] Preferably, the modified resin film has a thickness of 0.1 to 0.15 mm.

[0018] Preferably, in step S3, the hot pressing temperature is 130-150° C., the pressure is 20 t, and the hot pressing time is 3-5 min.

[0019] To further solve the technical problem, the present invention also provides a mobile phone cover, which is made using the process described above. The mobile phone cover includes a paint layer, a modified resin layer and at least three glass fiber layers stacked in sequence, the paint layer includes a primer layer, a mid-paint layer and a high-gloss topcoat layer, and the modified resin layer is a mixture of epoxy resin and ceramic powder.

[0020] Preferably, the ceramic powder accounts for 3-5% of the epoxy resin, and the thickness of the modified resin layer is 0.1-0.15 mm.

[0021] Preferably, the glass fiber layer has four layers, including a first glass fiber layer, a second glass fiber layer, a third glass fiber layer and a fourth glass fiber layer, the first glass fiber layer and the fourth glass fiber layer are made of 1080 electronic grade glass fiber cloth, and the second glass fiber layer and the third glass fiber layer are made of 2116 electronic grade glass fiber cloth.

[0022] By implementing the above technical scheme, the following technical effects are achieved: the process for achieving high gloss on mobile phone covers with glass fibers and the mobile phone cover provided by the present invention further solve the technical problem that high gloss cannot be achieved on the surface due to the unevenness of the braided wires on the surface of the glass fibers, and achieve the high gloss effect of the mobile phone cover, further adapting to the user's pursuit of aesthetics, and the mobile phone cover product prepared by this process has more excellent performance, and the strength and toughness of the back cover of the mobile phone are further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of a process for achieving high gloss on a mobile phone cover using glass fiber provided in the first embodiment of the present invention;

[0024] Figure 2 A schematic flow chart of step S4 of a process for achieving high gloss on a mobile phone cover with glass fiber provided in the first embodiment of the present invention;

[0025] Figure 3 A structural cross-sectional view of a mobile phone cover provided by a second embodiment of the present invention;

[0026] Description of the accompanying drawings:

[0027] 1. Modified resin layer; 2. Glass fiber layer; 3. Paint layer; 4. Coating layer; 21. First glass fiber layer; 22. Second glass fiber layer; 23. Third glass fiber layer; 24. Fourth glass fiber layer; 31. Primer layer; 32. Middle paint layer; 33. High-gloss topcoat layer. DETAILED DESCRIPTION

[0028] In order to better understand the technical solution of the present invention, the embodiments provided by the present invention are described in detail below with reference to the accompanying drawings.

[0029] See also Figure 1-2 The first embodiment of the present invention provides a process for achieving high gloss on a mobile phone cover with glass fiber, comprising the following steps:

[0030] Step S1: mixing epoxy resin and ceramic powder, adding an activator for treatment, and preparing a modified resin membrane;

[0031] Step S2: pretreating the glass fiber cloth to obtain a glass fiber prepreg;

[0032] Step S3: stacking at least three layers of glass fiber solidified sheets and modified resin film sheets, placing a mold, and performing integrated molding by hot pressing to obtain a mobile phone cover substrate;

[0033] Step S4: spraying primer, intermediate paint and high-gloss topcoat on the surface of the mobile phone cover substrate in sequence to achieve a high-gloss effect of the mobile phone cover and obtain a high-gloss mobile phone cover.

[0034] Therefore, the process for achieving high gloss on the mobile phone cover with glass fiber provided by the present invention improves the composition of epoxy resin and then sprays paint to achieve high gloss, further solving the technical problem that high gloss cannot be achieved on the surface due to the unevenness of the braided wire on the surface of the glass fiber, and achieves the high gloss effect of the mobile phone cover, further adapting to the user's pursuit of aesthetics, and the mobile phone cover product prepared by this process has more excellent performance, and the strength and toughness of the back cover of the mobile phone are further improved.

[0035] On the basis of the above-mentioned first embodiment, in other embodiments, further, in step S1, the amount of ceramic powder used is 3-5% of the total amount of epoxy resin, the main components of the ceramic powder are zirconium oxide, yttrium oxide and aluminum oxide, and the epoxy resin is mixed with the ceramic powder to further improve the shrinkage rate of the original epoxy resin, so that the modified resin sheet has better wear resistance and corrosion resistance.

[0036] On the basis of the above-mentioned first embodiment, in other embodiments, further, the glass fiber solidified sheet is provided with four layers, which are respectively a first glass fiber solidified sheet, a second glass fiber solidified sheet, a third glass fiber solidified sheet, and a fourth glass fiber solidified sheet stacked in sequence. The first glass fiber solidified sheet and the fourth glass fiber solidified sheet adopt 1080 electronic grade glass fiber cloth, and the second glass fiber solidified sheet and the third glass fiber solidified sheet adopt 2116 electronic grade glass fiber cloth. The thickness of 2116 electronic glass fiber cloth is 0.1 mm and the weight is 100 g / ㎡, which is suitable for extrusion molding and reinforcement materials. The thickness of 1080 electronic glass fiber cloth is 0.05 mm and the weight is 48 g / ㎡, which has high temperature resistance and good mechanical properties. Such a setting can not only effectively improve the mechanical properties of the glass fiber layer, but also effectively reduce the thickness of the glass fiber layer compared with the existing glass fiber layer, and the use experience of the product is further improved.

[0037] Based on the above first embodiment, in other embodiments, further, step S4 includes the following steps:

[0038] Step S41: spraying a primer on the mobile phone cover substrate, and performing a baking and curing process after the spraying is completed to form a primer layer;

[0039] Step S42: after spraying the primer, placing it in a magnetron coating machine for magnetron optical sputtering to form a coating layer;

[0040] Step S43: spraying a mid-coat on the coating layer, and performing a baking and curing treatment again after the spraying is completed to form a mid-coat layer;

[0041] Step S44: spraying a high-gloss topcoat on the surface of the middle paint layer, and performing a baking and curing treatment again after spraying to form a high-gloss topcoat layer.

[0042] On the basis of the above-mentioned first embodiment, in other embodiments, further, the material of the coating layer is one or more of silicon dioxide, titanium oxide, and aluminum oxide, which effectively improves the mechanical strength and wear resistance of the mobile phone cover, improves the chemical stability of the mobile phone cover, and further facilitates the spraying of the middle paint layer and the high-gloss top paint layer.

[0043] Based on the above first embodiment, in other embodiments, further, the thickness of the modified resin membrane is 0.1-0.15 mm.

[0044] On the basis of the above-mentioned first embodiment, in other embodiments, further, in step S3, the hot pressing temperature is 130-150° C., the pressure is 20t, the hot pressing time is 3-5 minutes, and then cooling and shaping are performed to obtain the mobile phone cover substrate after cooling.

[0045] See also Figure 3 The second embodiment of the present invention further provides a mobile phone cover, which is made by the above-mentioned glass fiber high-gloss process on the mobile phone cover. The mobile phone cover includes a paint layer 3, a modified resin layer 1 and at least three glass fiber layers 2 stacked in sequence. The paint layer 3 includes a primer layer 31, a middle paint layer 32 and a high-gloss topcoat layer 33. The modified resin layer 2 is a mixture of epoxy resin and ceramic powder.

[0046] On the basis of the above-mentioned second embodiment, in other embodiments, further, ceramic powder accounts for 3-5% of the epoxy resin, the thickness of the modified resin layer 2 is 0.1-0.15 mm, the main components of the ceramic powder are zirconium oxide, yttrium oxide and aluminum oxide, and the epoxy resin is mixed with the ceramic powder to further improve the shrinkage rate of the original epoxy resin, so that the modified resin layer 2 has better wear resistance and corrosion resistance.

[0047] On the basis of the above-mentioned second embodiment, in other embodiments, further, the glass fiber layer 2 has four layers, including a first glass fiber layer, a second glass fiber layer, a third glass fiber layer and a fourth glass fiber layer, the first glass fiber layer and the fourth glass fiber layer adopt 1080 electronic grade glass fiber cloth, the second glass fiber layer and the third glass fiber layer adopt 2116 electronic grade glass fiber cloth, the thickness of 2116 electronic glass fiber cloth is 0.1mm, the weight is 100g / ㎡, and it is suitable for extrusion molding and reinforcement materials, while the thickness of 1080 electronic glass fiber cloth is 0.05mm, the weight is 48g / ㎡, it has high temperature resistance and good mechanical properties, such a setting can not only effectively improve the mechanical properties of the glass fiber layer, but also effectively reduce the thickness of the glass fiber layer compared with the existing glass fiber layer, and the use experience of the mobile phone cover is further improved.

[0048] On the basis of the above-mentioned second embodiment, in other embodiments, further, there is a coating layer 4 on the primer layer 31, and the coating layer 4 is formed by placing the primer layer 31 into a magnetron coating machine for magnetron optical sputtering after spraying the primer. The material of the coating layer 4 is one or more of silicon dioxide, titanium oxide, and aluminum oxide, which effectively improves the mechanical strength and wear resistance of the mobile phone cover, improves the chemical stability of the mobile phone cover, and further provides convenience for the spraying of the middle paint layer 32 and the high-gloss top paint layer 33.

[0049] The above is a detailed introduction to the process for achieving high gloss on a mobile phone cover with glass fiber provided in an embodiment of the present invention and the mobile phone cover. For a person skilled in the art, according to the idea of ​​the embodiment of the present invention, there may be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A process for achieving high gloss on a mobile phone cover using glass fiber, characterized in that: The following steps are involved: Step S1: mixing epoxy resin and ceramic powder, adding an activator for treatment, and preparing a modified resin membrane; Step S2: pretreating the glass fiber cloth to obtain a glass fiber prepreg; Step S3: stacking at least three layers of glass fiber solidified sheets and modified resin film sheets, placing a mold, and performing integrated molding by hot pressing to obtain a mobile phone cover substrate; Step S4: spraying primer, intermediate paint and high-gloss topcoat on the surface of the mobile phone cover substrate in sequence to achieve a high-gloss effect of the mobile phone cover and obtain a high-gloss mobile phone cover.

2. The process for achieving high gloss on a mobile phone cover using glass fiber according to claim 1, characterized in that: The amount of the ceramic powder is 3-5% of the total amount of the epoxy resin.

3. The process for achieving high gloss on a mobile phone cover using glass fiber according to claim 2, characterized in that: The glass fiber solidified sheet is provided with four layers, which are a first glass fiber solidified sheet, a second glass fiber solidified sheet, a third glass fiber solidified sheet, and a fourth glass fiber solidified sheet stacked in sequence. The first glass fiber solidified sheet and the fourth glass fiber solidified sheet are made of 1080 electronic grade glass fiber cloth, and the second glass fiber solidified sheet and the third glass fiber solidified sheet are made of 2116 electronic grade glass fiber cloth.

4. The process for achieving high gloss on a mobile phone cover using glass fiber according to claim 1, characterized in that: The step S4 comprises the following steps: Step S41: spraying a primer on the mobile phone cover substrate, and performing a baking and curing process after the spraying is completed to form a primer layer; Step S42: after spraying the primer, placing it in a magnetron coating machine for magnetron optical sputtering to form a coating layer; Step S43: spraying a mid-coat on the coating layer, and performing a baking and curing treatment again after the spraying is completed to form a mid-coat layer; Step S44: spraying a high-gloss topcoat on the surface of the middle paint layer, and performing a baking and curing treatment again after spraying to form a high-gloss topcoat layer.

5. The process for achieving high gloss on a mobile phone cover using glass fiber according to claim 1, characterized in that: The material of the coating layer is one or more of silicon dioxide, titanium oxide, and aluminum oxide.

6. The process for achieving high gloss on a mobile phone cover using glass fiber according to claim 1, characterized in that: The thickness of the modified resin film is 0.1-0.15 mm.

7. The process for achieving high gloss on a mobile phone cover using glass fiber according to claim 1, characterized in that: In step S3, the hot pressing temperature is 130-150° C., the pressure is 20 t, and the hot pressing time is 3-5 min.

8. A mobile phone cover, characterized in that: The mobile phone cover is made by the process of achieving high gloss on the glass fiber described in any one of claims 1-7, the mobile phone cover comprises a paint layer, a modified resin layer and at least three glass fiber layers stacked in sequence, the paint layer comprises a primer layer, a mid-paint layer and a high-gloss topcoat layer, and the modified resin layer is a mixture of epoxy resin and ceramic powder.

9. The mobile phone cover according to claim 8, characterized in that: The ceramic powder accounts for 3-5% of the epoxy resin, and the thickness of the modified resin layer is 0.1-0.15 mm.

10. The mobile phone cover according to claim 8, characterized in that: The glass fiber layer has four layers, including a first glass fiber layer, a second glass fiber layer, a third glass fiber layer and a fourth glass fiber layer. The first glass fiber layer and the fourth glass fiber layer are made of 1080 electronic grade glass fiber cloth, and the second glass fiber layer and the third glass fiber layer are made of 2116 electronic grade glass fiber cloth.

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