阅读说明：本技术 玻璃外壳的制备方法、玻璃外壳以及电子设备 (Preparation method of glass shell, glass shell and electronic equipment ) 是由 陈亚兵 李倩倩 许仁 王伟 于 2019-10-18 设计创作，主要内容包括：本发明涉及一种玻璃外壳的制备方法、玻璃外壳以及电子设备。该制备方法通过粉碎后的玻璃基体粉料与粘结剂混合,并进行干燥处理,去除混合物中的水分,防止玻璃外壳内部出现气泡、针孔,有利于提高玻璃外壳的致密度。通过玻璃外壳粉料填入预设模具中压制得到玻璃外壳预成品,然后将玻璃外壳预成品烧结得到玻璃外壳。该制备方法从玻璃外壳的制备源头出发,不需要对整块玻璃进行切割,能够有效避免切割浪费。同时,该制备方法能够根据生产需要制得相应厚度的玻璃外壳,适用范围广。(The invention relates to a preparation method of a glass shell, the glass shell and electronic equipment. According to the preparation method, the crushed glass matrix powder is mixed with the binder and is dried, so that water in the mixture is removed, bubbles and pinholes in the glass shell are prevented, and the compactness of the glass shell is improved. The glass shell preform is prepared by filling glass shell powder into a preset die and pressing, and then the glass shell preform is sintered to obtain the glass shell. The preparation method starts from the preparation source of the glass shell, the whole glass does not need to be cut, and the cutting waste can be effectively avoided. Meanwhile, the preparation method can prepare the glass shell with the corresponding thickness according to production requirements, and has wide application range.)

1. A preparation method of a glass shell is characterized by comprising the following steps: the method comprises the following steps:

crushing a glass substrate, and mixing the crushed glass substrate with a binder to obtain a mixture;

drying the mixture to obtain glass shell powder;

filling the glass shell powder into a preset mold, and pressing to obtain a glass shell preform;

and sintering the glass shell preform.

2. The method of making a glass envelope of claim 1, wherein: the glass substrate is at least one of an aluminosilicate glass substrate and a microcrystalline glass substrate.

3. The method of making a glass envelope of claim 1, wherein: the binder is at least one of polyvinyl alcohol, polyacrylic acid and methyl cellulose.

4. The method of making a glass envelope of claim 1, wherein: the pressing condition is that the pressing is carried out for 3 to 10 seconds under 25 to 50 MPa.

5. The method of making a glass envelope of claim 1, wherein: the temperature for sintering the glass shell preform is 750-900 ℃, and the time for sintering is 0.5-3 h.

6. The method of making a glass envelope of claim 1, wherein: the drying adopts centrifugal drying; the drying conditions are that the rotating speed of a nozzle of the centrifuge is 100 r/s-250 r/s, and the temperature of a cavity of the centrifuge is 250-320 ℃.

7. The method of making a glass envelope of any of claims 1 to 6, further comprising: the method also comprises the step of cleaning the glass substrate before crushing the glass substrate.

8. The method of making a glass envelope of any of claims 1 to 6, further comprising: the method also comprises the step of mixing a pigment with the glass shell powder before the glass shell powder is filled into a preset mould; the pigment accounts for 2-6% of the mass of the glass matrix.

9. A glass envelope characterized by: the glass shell is prepared by the method for preparing the glass shell as claimed in any one of claims 1 to 8.

10. An electronic device, characterized in that: the housing of the electronic device is a glass housing as claimed in claim 9.

Technical Field

The invention relates to the technical field of electronic equipment manufacturing, in particular to a glass shell, a preparation method of the glass shell and electronic equipment.

Background

With the progress of technology, more and more electronic devices enter people's lives, and multifunctional electronic devices are deeply loved by consumers. Over the years, consumer demand for electronic devices has also increased. On the premise of satisfying the diversity of functions, consumers want the appearance of electronic devices to be more elegant. Glass has good performance and good decorative effect, so that more and more electronic equipment shells are made of glass materials. However, the conventional glass housing is processed by a cold engraving process, i.e. a piece of thick glass is used as a raw material, and the housing structure of the electronic device is engraved by using an engraving machine. In this process, very much glass needs to be cut off, resulting in a large amount of waste.

Disclosure of Invention

In view of the above, there is a need for a method for manufacturing a glass housing, a glass housing manufactured by the method, and an electronic device having the glass housing, which can effectively avoid cutting waste.

A preparation method of a glass shell comprises the following steps:

crushing a glass substrate, and mixing the crushed glass substrate with a binder to obtain a mixture;

drying the mixture to obtain glass shell powder;

filling the glass shell powder into a preset mold, and pressing to obtain a glass shell preform;

and sintering the glass shell preform.

In one embodiment, the glass matrix is at least one of an aluminosilicate glass matrix and a microcrystalline glass matrix.

In one embodiment, the binder is at least one of polyvinyl alcohol, polyacrylic acid, and methyl cellulose.

In one embodiment, the pressing is performed under the condition of pressing for 3s to 10s at 25MPa to 50 MPa.

In one embodiment, the temperature for sintering the glass housing preform is 750-900 ℃, and the time for sintering is 0.5-3 h.

In one embodiment, the drying is centrifugal drying; the drying conditions are that the rotating speed of a nozzle of the centrifuge is 100 r/s-250 r/s, and the temperature of a cavity of the centrifuge is 250-320 ℃.

In one embodiment, the method for manufacturing the glass housing further comprises the step of cleaning the glass substrate before the glass substrate is crushed.

In one embodiment, the method for preparing the glass shell further comprises the step of mixing a colorant with the glass shell frit before filling the glass shell frit into a predetermined mold; the pigment accounts for 2-6% of the mass of the glass matrix.

A glass envelope made by the method of making a glass envelope described in any of the above examples.

The shell of the electronic equipment is the glass shell.

The preparation method of the glass shell comprises the steps of crushing a glass substrate, mixing the crushed glass substrate with a binder to obtain a mixture, drying the mixture to obtain glass shell powder, pressing the glass shell powder in a preset mold to obtain a glass shell preform, and sintering the glass shell preform. In the preparation method, the crushed glass matrix powder is mixed with the binder and is dried, so that the water in the mixture is removed, bubbles and pinholes in the glass shell are prevented, and the compactness of the glass shell is improved. The glass shell preform is prepared by filling glass shell powder into a preset die and pressing, and then the glass shell preform is sintered to obtain the glass shell. The preparation method starts from the preparation source of the glass shell, the whole glass does not need to be cut, and the cutting waste can be effectively avoided. Meanwhile, the preparation method can prepare the glass shell with the corresponding thickness according to production requirements, and is wide in application range.

The glass shell has a good decoration effect, is suitable for electronic equipment, and can meet the appearance requirements of consumers on the electronic equipment.

Detailed Description

In order that the invention may be more fully understood, reference will now be made to the accompanying examples. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

An embodiment of the invention provides a preparation method of a glass shell, which comprises the following steps:

crushing a glass substrate, and mixing the crushed glass substrate with a binder to obtain a mixture;

drying the mixture to obtain glass shell powder;

filling the glass shell powder into a preset mold, and pressing to obtain a glass shell preform;

and sintering the glass shell preform.

In the preparation method of the glass shell in the embodiment, the crushed glass matrix powder is mixed with the binder and is dried, so that water in the mixture is removed, bubbles and pinholes in the glass shell are prevented, and the compactness of the glass shell is improved. The glass shell preform is prepared by filling glass shell powder into a preset die and pressing, and then the glass shell preform is sintered to obtain the glass shell. The preparation method does not need to cut the whole glass, and can effectively avoid cutting waste. Meanwhile, the preparation method can prepare the glass shell with the corresponding thickness according to production requirements, and is wide in application range.

In a specific example, the glass substrate is at least one of an aluminosilicate glass substrate and a microcrystalline glass substrate. The glass substrate can be an aluminosilicate glass substrate, a microcrystalline glass substrate or a mixture of the aluminosilicate glass substrate and the microcrystalline glass substrate. In the process of manufacturing the glass envelope, the glass matrix is pulverized to a set particle size range, and preferably, the particle size of the pulverized glass matrix is 1 to 10 μm. The glass substrate and the binder can be mixed more fully, and the uniformity of the glass shell is improved. It is understood that the glass substrate may be selected from waste residues generated in the glass production process, the waste residues are crushed and mixed with a binder, and then the mixture is dried and pressed to obtain a glass housing preform, and then the glass housing preform is sintered and then subjected to corresponding post-treatments such as shape finishing and polishing to obtain the glass housing. Waste excess materials generated in the glass production and processing process are selected as raw materials, so that the method is green and environment-friendly, and can reduce the production cost.

Preferably, the glass matrix is glass particles obtained by water quenching molten glass. Selecting a proper glass formula, melting all raw materials in the formula to obtain glass liquid, quenching the glass liquid to obtain glass particles, taking the glass particles as a glass matrix, and performing subsequent operation to select a proper glass matrix according to the performance of the required glass shell. In the production process, a proper glass substrate can be selected according to the requirements of products to prepare the glass shell so as to meet the performance requirements of electronic equipment and the appearance requirements of consumers.

Preferably, the glass matrix is wet milled into a glass slurry using a ball mill with water and then a binder is added to increase the strength of the glass shell powder body during compaction and to increase the stability of the glass shell powder body during processing and transportation.

In a specific example, the binder is at least one of polyvinyl alcohol, polyacrylic acid, and methyl cellulose.

In a specific example, the binder comprises 2% to 5% by mass of the glass matrix. The binder accounting for 2-5% of the mass of the glass matrix is added in the processing process, so that the strength of the glass shell powder blank can be ensured.

In a specific example, the pressing condition is that the pressing is performed for 3 to 10 seconds at 25 to 50 MPa. Under the pressing condition, the obtained glass shell preform does not crack or deform in the process of transferring to sintering, and the shape of the glass shell product can be ensured.

In a specific example, the temperature for sintering the glass shell preform is 750-900 ℃, and the time for sintering is 0.5-3 h. The glass shell preform is heated to generate a solid phase reaction, and at the temperature range, the glass matrix is between the glass transition point and the softening point, the glass matrix has certain fluidity, and the glass matrix can be mutually bonded to form a compact sintering product without losing the appearance structure of the product due to too low viscosity. The sintered glass shell preform has good strength and can meet the use requirements of electronic equipment. Preferably, the glass envelope preform is sintered at a temperature of 750 ℃ to 850 ℃.

In a specific example, the drying is centrifugal drying; the drying condition is that the rotating speed of the nozzle of the centrifuge is 100 r/s-250 r/s, and the temperature of the cavity of the centrifuge is 250-320 ℃. The grain size of the glass shell powder is controlled at the rotating speed of 100 r/s-250 r/s and the temperature of 250-320 ℃. Preferably, the glass shell powder has a particle size of 1-20 μm, and the glass shell powder with a particle size of 1-20 μm can be fully and uniformly filled into a preset mold, and a uniform glass shell preform is formed after pressing, which is beneficial to improving the compactness of the glass shell.

In a specific example, the method for manufacturing the glass envelope further includes the step of cleaning the glass substrate before the glass substrate is crushed. The glass substrate is cleaned to remove impurities such as oil stains, dust and the like on the surface of the glass substrate, so that the glass substrate and the binder can better act, and the performance of the glass shell is improved.

Preferably, the cleaning method adopts alkali liquor with the pH value of 10 to clean under the ultrasonic condition, and can better remove impurities such as oil stains, dust and the like on the surface of the glass substrate. Further preferably, the lye is a sodium hydroxide solution.

In a specific example, the above method for producing a glass envelope further comprises the step of mixing a colorant with the glass envelope frit before filling the glass envelope frit into the mold; the pigment accounts for 2 to 6 percent of the mass of the glass matrix. In order to meet the requirement of customers on the color diversity of the glass shell, before the glass shell powder is filled into the mold, the pigment and the glass shell powder are mixed to obtain the glass shells with different colors. Preferably, the colorant is an inorganic colorant such as: colored metal oxides, silicate-based colorants, and fluorite-based colorants.

In a specific example, the method for manufacturing the glass envelope further comprises the step of performing post-treatment on the glass envelope preform after sintering. The preferred post-processing steps are finishing, polishing. The surface of the glass shell preform after sintering is rough and even has uneven surface. Therefore, the shape of the sintered glass shell preform is refined and the hole is carved by using a carving machine, so that the shape and the size of the product meet the product requirements. After the pressing and forming, the sintered sample can maintain the appearance of the product during design. Compare with traditional carving to whole piece glass, the time that the finishing impression process took in this embodiment shortens greatly, and the use amount and the wearing and tearing volume of cutter obviously reduce simultaneously, can further reduce the manufacturing cost of glass shell.

Further, the glass envelope preform after finishing the outer shape is polished to make the surface of the glass envelope glossy. The polishing mode can be polishing by using a vibration polishing machine, and can also be polishing by using a 3D polishing machine. And polishing to obtain the glass shell with good luster. Meanwhile, the pigment is added before the glass shell powder is filled into the mould and is sintered at high temperature, so that the glass shell can present uniform color.

The embodiment of the invention also provides a glass shell, and the glass shell is prepared by the preparation method of the glass shell.

An embodiment of the invention further provides electronic equipment, and the shell of the electronic equipment is the glass shell. Preferably, the electronic device is a mobile phone, a watch or the like. The consumption of mobile phones, watches and the like is large, consumers have high requirements on the performance and the appearance of the mobile phones, the glass shell in the embodiment is used as a mobile phone glass shell or a watch glass shell, the glass shell has a good decoration effect, and the glass shell is suitable for electronic equipment and meets the appearance requirements of the consumers on the electronic equipment.

The following are specific examples.