Shell side face repairing process

Abstract

The invention discloses a shell side surface repairing process, which belongs to the technical field of electronic product shell repairing, and comprises the following steps: S1, cleaning the damaged part of the shell side surface to remove dust and oil stain on the surface; s2, a brush is used for evenly smearing the repairing agent to the damaged part of the side face of the shell, and it is ensured that the damaged part is completely covered; s3, preliminarily curing the repairing agent; s4, a wool wheel is used for slightly polishing the repaired position, so that the repaired surface and the side face of the shell are integrally kept flat; s5, a sponge wheel is matched with a water-containing alcohol solution to grind the repaired surface, and the redundant repairing agent is removed; and S6, the repaired shell is subjected to standing for 24 hours in a ventilated place, so that the repairing agent is completely cured. According to the shell side face repairing technology, the damaged shell side face is treated, the defects of the shell side face can be effectively overcome, attractiveness is good, durability is high, the shell side face repairing technology is stable in performance in the high-temperature environment, the humid environment and the like, and the service life of the shell can be effectively prolonged.

Description

Technical Field

[0001] This invention relates to the field of electronic product casing repair technology, and in particular to a casing side repair process. Background Technology

[0002] In daily life and work, the casings of various devices, such as electronic product casings and mechanical equipment casings, are prone to defects such as dents, chips, and scratches due to frequent collisions and friction with other objects. These defects not only affect the aesthetics of the casing but may also further impair its protective performance and shorten the lifespan of the equipment.

[0003] Currently, conventional methods for repairing the sides of casings have many shortcomings. Some methods use simple filler materials, but these materials have poor adhesion to the casing, are prone to falling off, and result in unsatisfactory repair effects. Other methods require large-area treatment of the entire casing, which is costly and may affect the performance of the original casing. Therefore, there is an urgent need for a repair process that can effectively repair defects on the sides of casings, with good repair results and low cost. Summary of the Invention

[0004] The purpose of this invention is to provide a shell side repair process that treats damaged shell sides. A special repair agent can effectively fill defects such as dents, missing parts, and scratches caused by bumps and friction on the shell sides. After repair, the shell sides are aesthetically pleasing, and the repaired parts are firmly bonded to the original shell, resulting in high durability. It also exhibits stability in high temperature and humid environments, effectively extending the service life of the shell.

[0005] To achieve the above objectives, the present invention provides a shell side repair process, comprising the following steps: S1. Clean the damaged areas on the sides of the outer casing to remove dust and oil. S2. Use a brush to evenly apply the repair agent to the damaged area on the side of the shell, ensuring that the damaged area is completely covered; S3, the repair agent has initially cured; S4. Use a wool wheel to lightly sand the repaired area to ensure that the repaired surface is flush with the side of the outer shell. S5. Use a sponge wheel with an aqueous alcohol solution to grind and repair the surface, removing excess repair agent; S6. Place the repaired shell in a ventilated area for 24 hours to allow the repair agent to fully cure.

[0006] Preferably, the repair agent used in S2, by weight, includes the following raw materials: 32-38 parts epoxy resin, 22-24 parts matrix resin, 6-7 parts acid anhydride curing agent, 0.3-0.5 parts curing accelerator, 11-13 parts octyl glycidyl ether, 9-11 parts benzyl glycidyl ether, 26-28 parts nanofiller, 14-16 parts alumina, 7-9 parts silicon dioxide, 3-3.5 parts aluminum hydroxide powder, 2.2-2.8 parts silane coupling agent, 3.5-4.5 parts polystyrene sulfuric acid powder, 2-3 parts acetic acid, 0.25-0.35 parts leveling agent, and 0.25-0.35 parts defoamer.

[0007] Preferably, the composition comprises 32 parts epoxy resin, 22 parts matrix resin, 6 parts acid anhydride curing agent, 0.3 parts curing accelerator, 11 parts octyl glycidyl ether, 9 parts benzyl glycidyl ether, 26 parts nanofiller, 14 parts alumina, 7 parts silicon dioxide, 3 parts aluminum hydroxide powder, 2.2 parts silane coupling agent, 3.5 parts polystyrene sulfuric acid powder, 2 parts acetic acid, 0.25 parts leveling agent, and 0.25 parts defoamer.

[0008] Preferably, the composition includes 35 parts epoxy resin, 23 parts matrix resin, 6.5 parts acid anhydride curing agent, 0.4 parts curing accelerator, 12 parts octyl glycidyl ether, 10 parts benzyl glycidyl ether, 27 parts nanofiller, 15 parts alumina, 8 parts silicon dioxide, 3.3 parts aluminum hydroxide powder, 2.5 parts silane coupling agent, 4 parts polystyrene sulfuric acid powder, 2.5 parts acetic acid, 0.3 parts leveling agent, and 0.3 parts defoamer.

[0009] Preferably, the composition includes 38 parts epoxy resin, 24 parts matrix resin, 7 parts acid anhydride curing agent, 0.5 parts curing accelerator, 13 parts octyl glycidyl ether, 11 parts benzyl glycidyl ether, 28 parts nanofiller, 16 parts alumina, 9 parts silicon dioxide, 3.5 parts aluminum hydroxide powder, 2.8 parts silane coupling agent, 4.5 parts polystyrene sulfuric acid powder, 3 parts acetic acid, 0.35 parts leveling agent, and 0.35 parts defoamer.

[0010] Preferably, the matrix resin is one of the following: acrylate waterborne resin, polyurethane-acrylate copolymer, and fluorinated acrylate waterborne resin.

[0011] Preferably, the silane coupling agent is one of γ-glycidoxypropyltrimethoxysilane, mercaptopropyltrimethoxysilane, and N-β-(aminoethyl)-γ-aminopropyltrimethoxysilane.

[0012] Preferably, during the polishing process in S4, the pressure applied by the wool wheel to the side of the housing is 0.002-0.004 MPa, the rotation speed is controlled at 800-1000 r / min, and the polishing time at the same position is less than 2 minutes.

[0013] Preferably, the mass percentage of alcohol component in the aqueous alcohol solution in S5 is 30-70%.

[0014] Therefore, the present invention adopts the above-mentioned shell side repair process to treat the damaged shell side. The special repair agent can effectively fill the defects such as dents, defects, and scratches caused by bumps and friction on the shell side. After repair, the shell side has good aesthetics, and the repaired part is firmly bonded to the original shell, with high durability. It is stable in high temperature and humid environments and can effectively extend the service life of the shell.

[0015] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0016] Figure 1 This is a flowchart of a shell side repair process according to the present invention; Figure 2 This is the side of the outer shell before repair by the outer shell side repair process of the present invention; Figure 3 This is the side of the outer shell repaired by a shell side repair process according to the present invention. Detailed Implementation

[0017] The technical solution of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Unless otherwise defined, the technical or scientific terms used in this invention shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains.

[0019] like Figure 1 As shown, the present invention provides a shell side repair process, including the following steps: S1. Clean the damaged areas on the sides of the outer casing to remove dust and oil. S2. Use a brush to evenly apply the repair agent to the damaged area on the side of the shell, ensuring that the damaged area is completely covered; The repair agent, by weight, comprises the following raw materials: 32-38 parts epoxy resin, 22-24 parts matrix resin, 6-7 parts acid anhydride curing agent, 0.3-0.5 parts curing accelerator, 11-13 parts octyl glycidyl ether, 9-11 parts benzyl glycidyl ether, 26-28 parts nanofiller, 14-16 parts alumina, 7-9 parts silicon dioxide, 3-3.5 parts aluminum hydroxide powder, 2.2-2.8 parts silane coupling agent, 3.5-4.5 parts polystyrene sulfuric acid powder, 2-3 parts acetic acid, 0.25-0.35 parts leveling agent, and 0.25-0.35 parts defoamer.

[0020] The matrix resin is one of the following: acrylate waterborne resin, polyurethane-acrylate copolymer, or fluorinated acrylate waterborne resin. The silane coupling agent is one of the following: γ-glycidoxypropyltrimethoxysilane, mercaptopropyltrimethoxysilane, or N-β-(aminoethyl)-γ-aminopropyltrimethoxysilane.

[0021] The mixed matrix formed by epoxy resin and matrix resin provides a dispersion carrier for subsequently added fillers, main components, etc., ensuring the integrity of the repaired material. Epoxy resin, as the main resin, possesses high strength, good adhesion, and chemical stability. The matrix resin works synergistically with epoxy resin to adjust the system's flexibility, modeling, and wettability to the damaged surface, ensuring that the repair agent can evenly cover and adhere to the damaged area.

[0022] Nanofillers, with their small size and large specific surface area, can be uniformly dispersed in the resin matrix, enhancing the toughness, wear resistance, and impact resistance of the material through "nano-effects" (such as dislocation strengthening and interfacial stress transfer). Inorganic fillers such as alumina and silicon dioxide have high hardness and good thermal conductivity, further enhancing the compressive strength and wear resistance of the repair agent, while reducing curing shrinkage and minimizing the risk of cracking due to volume changes after repair. Aluminum hydroxide powder has both filling and flame-retardant properties, improving the safety of the repair material.

[0023] The silane coupling agent molecule contains polar and non-polar groups at both ends. The polar end reacts with the hydroxyl groups on the surface of the inorganic filler to form a chemical bond; the non-polar end has good compatibility with epoxy resin and matrix resin, which can achieve interfacial chemical bonding between "inorganic filler and organic matrix", solve the problem of poor compatibility between the two, avoid filler agglomeration leading to strength reduction, and significantly improve the overall mechanical properties of the repair agent and the adhesion of the damaged matrix.

[0024] Leveling agents reduce the surface tension of the system, allowing the repair agent to spread evenly on the damaged surface and reducing brush marks and pinholes; defoamers eliminate air bubbles generated during application, preventing porosity defects after curing and ensuring the density of the repair layer.

[0025] S3, the repair agent has initially cured; S4. Use a wool wheel to lightly sand the repaired area to ensure that the repaired surface is flush with the side of the outer shell. During polishing, the pressure applied by the wool wheel to the side of the outer shell is 0.002-0.004 MPa, the rotation speed is controlled at 800-1000 r / min, and the polishing time for the same position is less than 2 minutes.

[0026] S5. Use a sponge wheel with an aqueous alcohol solution to grind and repair the surface, removing excess repair agent; The mass percentage of alcohol in an aqueous alcohol solution is 30-70%.

[0027] S6. Place the repaired shell in a ventilated area for 24 hours to allow the repair agent to fully cure.

[0028] Example 1 This invention provides a process for repairing the side of a housing, comprising the following steps: S1. Clean the damaged areas on the sides of the outer casing to remove dust and oil. S2. Use a brush to evenly apply the repair agent to the damaged area on the side of the shell, ensuring that the damaged area is completely covered; The repair agent, by weight, comprises the following raw materials: 32 parts epoxy resin, 22 parts matrix resin, 6 parts acid anhydride curing agent, 0.3 parts curing accelerator, 11 parts octyl glycidyl ether, 9 parts benzyl glycidyl ether, 26 parts nanofiller, 14 parts alumina, 7 parts silicon dioxide, 3 parts aluminum hydroxide powder, 2.2 parts silane coupling agent, 3.5 parts polystyrene sulfuric acid powder, 2 parts acetic acid, 0.25 parts leveling agent, and 0.25 parts defoamer.

[0029] The matrix resin is one of the following: acrylate waterborne resin, polyurethane-acrylate copolymer, or fluorinated acrylate waterborne resin. The silane coupling agent is one of the following: γ-glycidoxypropyltrimethoxysilane, mercaptopropyltrimethoxysilane, or N-β-(aminoethyl)-γ-aminopropyltrimethoxysilane.

[0030] S3, the repair agent has initially cured; S4. Use a wool wheel to lightly sand the repaired area to ensure that the repaired surface is flush with the side of the outer shell. During polishing, the pressure applied by the wool wheel to the side of the housing is 0.003 MPa, the rotation speed is controlled at 900 r / min, and the polishing time at the same position is less than 2 minutes.

[0031] S5. Use a sponge wheel with an aqueous alcohol solution to grind and repair the surface, removing excess repair agent; The mass percentage of alcohol in an aqueous alcohol solution is 30-70%.

[0032] S6. Place the repaired shell in a ventilated area for 24 hours to allow the repair agent to fully cure.

[0033] Example 2 This invention provides a process for repairing the side of a housing, comprising the following steps: S1. Clean the damaged areas on the sides of the outer casing to remove dust and oil. S2. Use a brush to evenly apply the repair agent to the damaged area on the side of the shell, ensuring that the damaged area is completely covered; The repair agent, by weight, comprises the following raw materials: 35 parts epoxy resin, 23 parts matrix resin, 6.5 parts acid anhydride curing agent, 0.4 parts curing accelerator, 12 parts octyl glycidyl ether, 10 parts benzyl glycidyl ether, 27 parts nano filler, 15 parts alumina, 8 parts silicon dioxide, 3.3 parts aluminum hydroxide powder, 2.5 parts silane coupling agent, 4 parts polystyrene sulfuric acid powder, 2.5 parts acetic acid, 0.3 parts leveling agent, and 0.3 parts defoamer.

[0034] The matrix resin is one of the following: acrylate waterborne resin, polyurethane-acrylate copolymer, or fluorinated acrylate waterborne resin. The silane coupling agent is one of the following: γ-glycidoxypropyltrimethoxysilane, mercaptopropyltrimethoxysilane, or N-β-(aminoethyl)-γ-aminopropyltrimethoxysilane.

[0035] S3, the repair agent has initially cured; S4. Use a wool wheel to lightly sand the repaired area to ensure that the repaired surface is flush with the side of the outer shell. During polishing, the pressure applied by the wool wheel to the side of the housing is 0.003 MPa, the rotation speed is controlled at 900 r / min, and the polishing time at the same position is less than 2 minutes.

[0036] S5. Use a sponge wheel with an aqueous alcohol solution to grind and repair the surface, removing excess repair agent; The mass percentage of alcohol in an aqueous alcohol solution is 30-70%.

[0037] S6. Place the repaired shell in a ventilated area for 24 hours to allow the repair agent to fully cure.

[0038] Example 3 This invention provides a process for repairing the side of a housing, comprising the following steps: S1. Clean the damaged areas on the sides of the outer casing to remove dust and oil. S2. Use a brush to evenly apply the repair agent to the damaged area on the side of the shell, ensuring that the damaged area is completely covered; The repair agent, by weight, comprises the following raw materials: 38 parts epoxy resin, 24 parts matrix resin, 7 parts acid anhydride curing agent, 0.5 parts curing accelerator, 13 parts octyl glycidyl ether, 11 parts benzyl glycidyl ether, 28 parts nanofiller, 16 parts alumina, 9 parts silicon dioxide, 3.5 parts aluminum hydroxide powder, 2.8 parts silane coupling agent, 4.5 parts polystyrene sulfuric acid powder, 3 parts acetic acid, 0.35 parts leveling agent, and 0.35 parts defoamer.

[0039] The matrix resin is one of the following: acrylate waterborne resin, polyurethane-acrylate copolymer, or fluorinated acrylate waterborne resin. The silane coupling agent is one of the following: γ-glycidoxypropyltrimethoxysilane, mercaptopropyltrimethoxysilane, or N-β-(aminoethyl)-γ-aminopropyltrimethoxysilane.

[0040] S3, the repair agent has initially cured; S4. Use a wool wheel to lightly sand the repaired area to ensure that the repaired surface is flush with the side of the outer shell. During polishing, the pressure applied by the wool wheel to the side of the housing is 0.003 MPa, the rotation speed is controlled at 900 r / min, and the polishing time at the same position is less than 2 minutes.

[0041] S5. Use a sponge wheel with an aqueous alcohol solution to grind and repair the surface, removing excess repair agent; The mass percentage of alcohol in an aqueous alcohol solution is 30-70%.

[0042] S6. Place the repaired shell in a ventilated area for 24 hours to allow the repair agent to fully cure.

[0043] The process described in Example 2 was applied to the repair of the side of a flat panel shell, and the results were as follows: Figure 2 and Figure 3 As shown, Figure 2 This is the side of the outer casing before repair; the frame has scratches. Figure 3 For the repaired side of the shell, by Figure 2 and Figure 3 As can be seen, before and after the repair, the scratches on the side of the tablet shell can be clearly seen to have been repaired, and the side of the tablet shell has become smooth and flat.

[0044] Therefore, the present invention adopts the above-mentioned shell side repair process to treat the damaged shell side. The special repair agent can effectively fill the defects such as dents, defects, and scratches caused by bumps and friction on the shell side. After repair, the shell side has good aesthetics, and the repaired part is firmly bonded to the original shell, with high durability. It is stable in high temperature and humid environments and can effectively extend the service life of the shell.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solutions of the present invention, and these modifications or equivalent substitutions cannot cause the modified technical solutions to deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. A process for repairing the side of a shell, characterized in that: Includes the following steps: S1. Clean the damaged areas on the sides of the outer casing to remove dust and oil. S2. Use a brush to evenly apply the repair agent to the damaged area on the side of the shell, ensuring that the damaged area is completely covered; S3, the repair agent has initially cured; S4. Use a wool wheel to lightly sand the repaired area to ensure that the repaired surface is flush with the side of the outer shell. S5. Use a sponge wheel with an aqueous alcohol solution to grind and repair the surface, removing excess repair agent; S6. Place the repaired shell in a ventilated area for 24 hours to allow the repair agent to fully cure.

2. The shell side repair process according to claim 1, characterized in that: The repair agent used in S2, by weight, includes the following raw materials: 32-38 parts epoxy resin, 22-24 parts matrix resin, 6-7 parts acid anhydride curing agent, 0.3-0.5 parts curing accelerator, 11-13 parts octyl glycidyl ether, 9-11 parts benzyl glycidyl ether, 26-28 parts nanofiller, 14-16 parts alumina, 7-9 parts silicon dioxide, 3-3.5 parts aluminum hydroxide powder, 2.2-2.8 parts silane coupling agent, 3.5-4.5 parts polystyrene sulfuric acid powder, 2-3 parts acetic acid, 0.25-0.35 parts leveling agent, and 0.25-0.35 parts defoamer.

3. The shell side repair process according to claim 2, characterized in that: The composition includes 32 parts epoxy resin, 22 parts matrix resin, 6 parts acid anhydride curing agent, 0.3 parts curing accelerator, 11 parts octyl glycidyl ether, 9 parts benzyl glycidyl ether, 26 parts nanofiller, 14 parts alumina, 7 parts silicon dioxide, 3 parts aluminum hydroxide powder, 2.2 parts silane coupling agent, 3.5 parts polystyrene sulfuric acid powder, 2 parts acetic acid, 0.25 parts leveling agent, and 0.25 parts defoamer.

4. The shell side repair process according to claim 2, characterized in that: The composition includes 35 parts epoxy resin, 23 parts matrix resin, 6.5 parts acid anhydride curing agent, 0.4 parts curing accelerator, 12 parts octyl glycidyl ether, 10 parts benzyl glycidyl ether, 27 parts nanofiller, 15 parts alumina, 8 parts silicon dioxide, 3.3 parts aluminum hydroxide powder, 2.5 parts silane coupling agent, 4 parts polystyrene sulfuric acid powder, 2.5 parts acetic acid, 0.3 parts leveling agent, and 0.3 parts defoamer.

5. The shell side repair process according to claim 2, characterized in that: The composition includes 38 parts epoxy resin, 24 parts matrix resin, 7 parts acid anhydride curing agent, 0.5 parts curing accelerator, 13 parts octyl glycidyl ether, 11 parts benzyl glycidyl ether, 28 parts nanofiller, 16 parts alumina, 9 parts silicon dioxide, 3.5 parts aluminum hydroxide powder, 2.8 parts silane coupling agent, 4.5 parts polystyrene sulfuric acid powder, 3 parts acetic acid, 0.35 parts leveling agent, and 0.35 parts defoamer.

6. The shell side repair process according to claim 2, characterized in that: The matrix resin is one of the following: acrylate waterborne resin, polyurethane-acrylate copolymer, or fluorinated acrylate waterborne resin.

7. The shell side repair process according to claim 2, characterized in that: The silane coupling agent is one of γ-glycidoxypropyltrimethoxysilane, mercaptopropyltrimethoxysilane, and N-β-(aminoethyl)-γ-aminopropyltrimethoxysilane.

8. The shell side repair process according to claim 1, characterized in that: When polishing in S4, the pressure applied by the wool wheel to the side of the housing is 0.002-0.004 MPa, the speed is controlled at 800-1000 r / min, and the polishing time at the same position is less than 2 minutes.

9. The shell side repair process according to claim 1, characterized in that: The mass percentage of alcohol component in the aqueous alcohol solution of S5 is 30-70%.

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