CN111716155B

CN111716155B - Surface floating fiber processing method and terminal

Info

Publication number: CN111716155B
Application number: CN201910218620.5A
Authority: CN
Inventors: 刘兵; 苏磊
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2019-03-21
Filing date: 2019-03-21
Publication date: 2022-04-22
Anticipated expiration: 2039-03-21
Also published as: CN111716155A

Abstract

The disclosure relates to a surface fiber floating processing method and a terminal. The method comprises the following steps: polishing the surface of the plastic shell containing the glass fiber; and soaking the polished plastic shell in an acidic microetching agent to remove floating fibers on the surface of the polished plastic shell. According to the technical scheme, the polished plastic shell is soaked in the acidic microetching agent, and the floating fibers on the surface of the plastic shell are dissolved by the acidic microetching agent, so that the floating fibers on the surface of the polished plastic shell disappear, and the attractiveness of the surface of the plastic shell is improved.

Description

Surface floating fiber processing method and terminal

Technical Field

The disclosure relates to the technical field of surface engineering, and in particular relates to a surface floating fiber processing method and a terminal.

Background

With the continuous development of mobile terminal technology, people have higher and higher requirements on the weight and strength of a mobile terminal, and in order to meet the requirements on high strength and light weight of a terminal housing, a plastic housing containing glass fibers is generally adopted as the terminal housing, and a high-glass-fiber PC plastic or PA plastic is desirably adopted, wherein the volume content of the glass fibers is 30-60%.

Among the correlation technique, in order to improve the aesthetic property of terminal casing, generally need to carry out joint line to the terminal casing and polish and the spraying is handled, when the joint line is polished, if the fine volume content of glass is greater than 20% when, can make glass leak, also make terminal casing surface have the superficial fine, and subsequent highlight spraying is handled specifically and is: and paint, a color coating, finish paint and the like are sequentially sprayed on the surface of the high-glass-fiber plastic shell.

Disclosure of Invention

In order to overcome the problems in the related art, the embodiments of the present disclosure provide a method and a terminal for processing surface floating fibers. The technical scheme is as follows:

according to a first aspect of the embodiments of the present disclosure, there is provided a surface floating fiber processing method, including:

polishing the surface of the plastic shell containing the glass fiber;

and soaking the polished plastic shell in an acidic microetching agent to remove floating fibers on the surface of the polished plastic shell.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: the polished plastic shell is soaked in the acidic microetching agent, and the floating fibers on the surface of the plastic shell are dissolved by the acidic microetching agent, so that the floating fibers on the surface of the polished plastic shell disappear, and the attractiveness of the surface of the plastic shell is improved.

In one embodiment, the step of soaking the polished plastic shell in an acidic microetching agent to remove floating fibers on the surface of the polished plastic shell includes:

and soaking the polished plastic shell in an acidic micro-etching agent at a preset temperature for a preset time, and stirring to remove floating fibers on the surface of the polished plastic shell.

In one embodiment, the method further comprises:

and cleaning the plastic shell from which the floating fibers are removed.

In one embodiment, the method further comprises:

and drying the cleaned plastic shell.

In one embodiment, the method further comprises:

and spraying paint on the surface of the dried plastic shell to cover the surface of the plastic shell from which the floating fibers are removed.

In one embodiment, the paint comprises a hybrid paint of a PU paint and a UV paint.

In one embodiment, the method further comprises:

and performing highlight spraying treatment on the plastic shell sprayed with the paint.

In one embodiment, the acidic microetching agent comprises ammonium bifluoride, and/or hydrofluoric acid.

In one embodiment, the acidic microetching agent further comprises at least one of sodium fluoride, potassium fluoride, and nitric acid.

According to a second aspect of the embodiments of the present disclosure, there is provided a terminal, including performing surface fiber floating processing by using the method of the above embodiments.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

FIG. 1 is a flow chart illustrating a method of surface fiber surfacing processing according to an exemplary embodiment.

FIG. 2 is a flow chart illustrating a method of surface fiber surfacing processing according to an exemplary embodiment.

FIG. 3 is a flow chart illustrating a method of surface fiber surfacing processing according to an exemplary embodiment.

FIG. 4 is a flow chart illustrating a method of surface fiber surfacing processing according to an exemplary embodiment.

FIG. 5 is a flow chart illustrating a method of surface fiber surfacing processing according to an exemplary embodiment.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

Among the correlation technique, in order to improve the aesthetic property of terminal casing, generally need to carry out joint line to the terminal casing and polish and the spraying is handled, when the joint line is polished, if the fine volume content of glass is greater than 20% when, can make glass leak, also make terminal casing surface have the superficial fine, subsequent highlight spraying is handled specifically and is: paint, a color coating, finish paint and the like are sequentially sprayed on the surface of the high-glass-fiber plastic shell, but the floating fibers on the surface cannot be covered by the paint, the color coating, the finish paint and the like, so that the surface of the terminal shell is poor in floating fibers and not attractive. According to the technical scheme provided by the embodiment of the disclosure, the polished plastic shell is soaked in the acidic microetching agent, and the floating fibers on the surface of the plastic shell are dissolved by the acidic microetching agent, so that the floating fibers on the surface of the polished plastic shell disappear, and the attractiveness of the surface of the plastic shell is improved.

Fig. 1 schematically shows a flowchart of a surface fiber floating processing method provided by an embodiment of the present disclosure. The surface fiber floating treatment method can be applied to the treatment of terminal shells, such as mobile phone shells, mobile phone middle frames and the like. As shown in fig. 1, the method for processing the surface floating fiber specifically includes the

following steps

101 and 102.

In step 101, a surface of a plastic shell containing glass fibers is polished.

The glass fiber is an inorganic non-metallic material with excellent performance, is manufactured by adopting ores such as pyrophyllite, quartz sand, limestone, dolomite, borocalcite, boromagnesite and the like as raw materials through processes such as high-temperature melting, wire drawing, winding, weaving and the like, has the diameter of a glass fiber monofilament of several micrometers to twenty micrometers, and has the advantages of good insulativity, strong heat resistance, good corrosion resistance and high mechanical strength.

The method comprises the following steps of polishing the surface of a plastic shell containing glass fibers by using polishing mechanical equipment, wherein the polishing comprises the steps of polishing a joint line after the plastic shell is closed, polishing the surface of the plastic shell except the joint line, and the like; especially, when the volume content of the glass fiber in the plastic shell exceeds 20%, when the plastic shell is polished, the surface of the plastic shell is poor in fiber floating, when the color of the plastic shell is dark, the fiber floating is more obvious, and finally the surface of the polished plastic shell is cleaned to remove chips and the like obtained after the surface of the plastic shell is polished, so that the surface of the polished plastic shell is clean.

In step 102, the polished plastic shell is immersed in an acidic microetching agent to remove floating fibers on the surface of the polished plastic shell.

Wherein, the acid micro-etching agent comprises ammonium bifluoride and/or hydrofluoric acid, the ammonium bifluoride is a corrosive chemical substance, and the weak acid dissolved in water can dissolve glass; hydrofluoric acid is an aqueous solution of hydrogen fluoride gas, is a colorless, fuming corrosive liquid, has extremely strong corrosivity, and can corrode metals, glass and silicon-containing objects.

Optionally, the polished plastic shell is soaked in an acidic microetching agent at a preset temperature for a preset time, and stirring is performed to remove floating fibers on the surface of the polished plastic shell.

The stirring may be performed by a mechanical stirrer, an air flow stirrer, an ultrasonic stirrer, or the like.

Illustratively, when the volume content of the glass fiber in the plastic shell is 30%, soaking the polished and cleaned plastic shell in an acidic microetching agent with the preset temperature of 25-85 ℃ and the concentration of 8-30 baume for 5-30 min at the ambient temperature of 25 ℃, wherein the volume content of ammonium bifluoride or hydrofluoric acid in the acidic microetching agent is 10-50%, stirring by using ultrasonic waves with the frequency of 48-60 MHz while soaking, so that the acidic microetching agent is uniformly and fully contacted with the surface of the plastic shell, and the floating fiber on the surface of the plastic shell is dissolved mainly by the corrosivity of the ammonium bifluoride or the hydrofluoric acid; in addition, when the acidic microetching agent comprises ammonium bifluoride and hydrofluoric acid, the sum of the volume contents of the ammonium bifluoride and the hydrofluoric acid is 10-50%, and the volume contents of the ammonium bifluoride and the hydrofluoric acid are determined according to requirements.

It should be noted that the volume content of ammonium bifluoride or hydrofluoric acid in the acidic microetching agent needs to be determined according to the content of the glass fiber in the plastic shell, and the higher the content of the glass fiber in the plastic shell is, the higher the volume content of ammonium bifluoride or hydrofluoric acid in the acidic microetching agent is, for example, the volume content of ammonium bifluoride or hydrofluoric acid in the acidic microetching agent can reach 80%, so as to ensure that the floating fiber on the surface of the plastic shell is completely dissolved.

Illustratively, when the volume content of the glass fiber in the plastic shell is 30%, the polished and cleaned plastic shell is immersed in an acidic microetching agent with a preset temperature of 25 ℃ and a concentration of 8 baume for 5min at an ambient temperature of 25 ℃, the volume content of ammonium bifluoride or hydrofluoric acid in the acidic microetching agent is 10%, and the acidic microetching agent is stirred by using ultrasonic waves with a frequency of 48MHz while being immersed, so that the acidic microetching agent is uniformly and sufficiently contacted with the surface of the plastic shell to remove floating fibers on the surface of the plastic shell.

When the volume content of the glass fiber in the plastic shell is 30%, soaking the polished and cleaned plastic shell in an acidic microetching agent with the preset temperature of 85 ℃ and the concentration of 30 baume for 30min at the ambient temperature of 25 ℃, wherein the volume content of ammonium bifluoride or hydrofluoric acid in the acidic microetching agent is 50%, and stirring by adopting ultrasonic waves with the frequency of 60MHz while soaking so that the acidic microetching agent is uniformly and fully contacted with the surface of the plastic shell to remove the floating fiber on the surface of the plastic shell.

In addition, the acidic microetching agent also comprises at least one of sodium fluoride, potassium fluoride and nitric acid, the sodium fluoride, the potassium fluoride and the nitric acid have certain corrosivity, and can be matched with ammonium bifluoride or hydrofluoric acid for use, so that floating fibers on the surface of the plastic shell can be better dissolved, the volume contents of the sodium fluoride, the potassium fluoride and the nitric acid can be prepared according to actual requirements, and the embodiment of the disclosure does not limit the volume contents.

The embodiment of the disclosure provides a surface fiber floating treatment method, which comprises the steps of soaking a polished plastic shell in an acidic microetching agent, and removing the fiber floating on the surface of the plastic shell by the acidic microetching agent, so that the fiber floating on the surface of the polished plastic shell disappears, the aesthetic property of the surface of the plastic shell is improved, and the strength of the plastic shell is improved because the plastic shell contains glass fibers.

As shown in fig. 2, after step 102 is executed, step 103 is further included.

In step 103, the plastic shell from which the floating fibers are removed is cleaned.

Optionally, the plastic shell from which the floating fibers are removed is subjected to ultrasonic cleaning for 5-10S by using water with the temperature of 40-85 ℃ and the conductivity of less than 10S/m.

In an example, the plastic shell from which the floating fibers are removed is taken out of the acid microetching agent, then ultrasonic cleaning is carried out for 2 times at the temperature of 40 ℃ and with the conductivity of less than 10S/m, the cleaning time is 5S each time, and the impurities in the water with the conductivity of less than 10S/m are less, so that the acid microetching agent remained on the surface of the plastic shell is cleaned.

Illustratively, the plastic shell from which the floating fibers are removed is taken out of the acid microetching agent, and then ultrasonic cleaning is carried out for 3 times by using water with the temperature of 85 ℃ and the conductivity of less than 10S/m, wherein the cleaning time is 10S each time, so that the acid microetching agent remained on the surface of the plastic shell is cleaned.

Further, when the plastic shell after removing the floating fibers needs to be cleaned for multiple times, the plastic shell needs to be pulled out of water by controlling the pulling speed of ultrasonic cleaning between 0.5mm/s and 2mm/s after the last cleaning, for example, the pulling speed is 0.5mm/s or the pulling speed is 2mm/s, so that watermarks can be prevented from being left on the surface of the plastic shell after the cleaning is finished due to the slower pulling speed.

As shown in fig. 3, after step 103 is executed, step 104 is further included.

In step 104, the washed plastic shell is dried.

Illustratively, the cleaned plastic shell is placed in a clean environment to be naturally dried, wherein the environmental cleanliness needs to be not lower than a dry level, so that the surface of the plastic shell is prevented from being polluted by dust and the like.

For example, in order to increase the drying speed of the plastic shell, an ion air gun may be disposed in a clean environment, and the ion air gun may blow ion air at an air pressure of 0.1kgf to 10kgf, so that the surface of the plastic shell is rapidly dried.

For example, in order to increase the drying speed of the plastic shell, the baking device may be disposed in a clean environment, and the plastic shell is dried rapidly.

For example, an ion air gun and baking equipment can be arranged in a clean environment at the same time, the ion air gun is controlled to blow ion air when the air pressure is 0.1 kgf-10 kgf, and the baking equipment is controlled to bake at the baking temperature of 40-65 ℃ for 3-5 min, so that the surface of the plastic shell is dried quickly.

For example, an ion air gun and a baking device can be arranged in a clean environment at the same time, the ion air gun is controlled to blow ion air when the air pressure is 0.1kgf, and the baking device is controlled to bake at the baking temperature of 40 ℃ for 3min, so that the surface of the plastic shell is dried quickly.

For example, an ion air gun and a baking device can be arranged in a clean environment at the same time, the ion air gun is controlled to blow ion air when the air pressure is 10kgf, and the baking device is controlled to bake at 65 ℃ for 5min, so that the surface of the plastic shell is quickly dried.

As shown in fig. 4, after step 104 is executed, step 105 is further included.

In step 105, paint is sprayed on the surface of the dried plastic shell to cover the surface of the plastic shell from which the floating fibers are removed.

The paint comprises a mixed paint of PU paint and UV paint, the PU paint is a general name of all polyurethane coatings, the paint has good hardness, fullness, adhesion and durability, and has strong covering power, the UV paint is ultraviolet light curing paint, the paint is automatically coated on the surfaces of objects such as plastic shells through a roller and a curtain by mechanical equipment, an initiator is promoted to decompose under the irradiation of ultraviolet light to generate free radicals, resin reaction is initiated, and the paint is instantly cured to form a film, so that the paint is environment-friendly at present.

For example, after the surface of the plastic shell is soaked in an acidic microetching agent to remove floating fibers, a nanoscale-micron rough surface is generated on the surface of the plastic shell, the paint is sprayed to cover the rough surface of the plastic shell, and the film thickness of the paint is 5 μm-20 μm, for example, an aksu paint which contains 80% by volume of UV resin and 20% by volume of PU resin, so that pits on the surface of the plastic shell are filled up, and the surface of the plastic shell is smooth.

As shown in fig. 5, after step 105 is performed, step 106 is further included.

In step 106, performing high-gloss spraying treatment on the plastic shell after the paint is sprayed.

For example, after the paint is sprayed, the surface of the plastic shell needs to be subjected to high-gloss spraying, for example, the high-gloss paint is sprayed on the surface of the plastic shell after step 105 is performed, so that the surface of the plastic shell is bright, and the aesthetic property of the surface of the plastic shell is increased.

The embodiment of the disclosure provides a surface fiber floating treatment method, which comprises the steps of soaking a polished plastic shell in an acidic microetching agent, and dissolving the fiber floating on the surface of the plastic shell by the acidic microetching agent, so that the fiber floating on the surface of the polished plastic shell disappears, and the aesthetic property of the surface of the plastic shell is improved; in addition, the surface of the plastic shell after the floating fiber is removed is sequentially cleaned, dried, painted and subjected to highlight spraying treatment, so that the surface of the plastic shell is bright, and the attractiveness of the surface of the plastic shell is further improved.

The embodiment of the disclosure provides a terminal, which includes that the method for processing the surface floating fiber is adopted to process the surface floating fiber.

The terminal can be a mobile phone, a tablet computer, a notebook computer and other devices used by a user, and particularly, the surface of the shell of the terminal needs to be subjected to fiber floating treatment.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A surface fiber floating treatment method is characterized by comprising the following steps:

polishing the surface of the plastic shell containing the glass fiber;

soaking the polished plastic shell in an acidic microetching agent to remove floating fibers on the surface of the polished plastic shell, wherein the method comprises the following steps:

2. The method of claim 1, further comprising:

and cleaning the plastic shell from which the floating fibers are removed.

3. The method of claim 2, further comprising:

and drying the cleaned plastic shell.

4. The method of claim 3, further comprising:

5. The method of claim 4, wherein the paint comprises a hybrid paint of PU paint and UV paint.

6. The method of claim 4, further comprising:

7. The method of claim 1, wherein the acidic microetching agent comprises ammonium bifluoride, and/or hydrofluoric acid.

8. The method of claim 7, wherein the acidic microetching agent further comprises at least one of sodium fluoride, potassium fluoride, and nitric acid.

9. A terminal, comprising: surface-floated fibres are treated by a method according to any one of claims 1 to 8.