Mobile phone case

A technology for mobile phone shells and plastic shells, which is applied to small shells, telephone structures, and other household appliances, etc., and can solve problems such as weak bonding between metal and plastic parts, non-abrasion resistance, drop resistance, and corrosion resistance

Active Publication Date: 2015-07-15
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention solves technical problems such as weak bonding force between metal and plastic parts in the mobile phone casing in the prior art, non-abrasion resistance, drop resistance, corrosion resistance, etc.

Method used

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preparation example Construction

[0033] The present invention simultaneously provides a preparation method for the above-mentioned mobile phone casing, comprising the following steps:

[0034] S1, anodize the surface of the pretreated metal shell body that needs to be combined with plastic parts to obtain a metal shell body with an oxide film layer with a pore size of 10-100 nm nanopores on the surface; anodic oxidation is an anodic well known to those skilled in the art Oxidation technology, the present invention may include putting the pretreated aluminum alloy as an anode into 10wt%-30wt% concentration of H2SO4, electrolysis at a temperature of 10-30°C for 1-40min at a voltage of 10V-100V to obtain a surface containing 1-10um thick For the aluminum alloy of the oxide film layer, the anodizing equipment adopts known anodizing equipment, such as an anodizing tank.

[0035] Among them, the metal shell body that needs anodized surface treatment can be part of the surface that needs to be combined with plastic ...

Embodiment 1

[0052] 1. Pretreatment: Cut the commercially available 1mm thick 5052 aluminum alloy shell body into a rectangular shell of 15mm*80mm (such as Figure 4 shown), put it into a polishing machine and grind it, and then wash it with absolute ethanol, then dip the aluminum alloy shell body in 40g / L sodium hydroxide aqueous solution, take it out after 2min and rinse it with deionized water to get Pre-treated aluminum alloy shell body;

[0053] 2. Surface treatment 1: Put the above-mentioned aluminum alloy shell body as an anode into an anodic oxidation tank containing H2SO4 with a concentration of about 20wt%, electrolyze it at 20V and 18°C ​​for 10min, and dry it;

[0054] 3. Surface treatment 2: Prepare 500ml of 10wt% sodium carbonate (pH=12) in a beaker, soak the obtained aluminum alloy shell body in it at 20°C, take it out after 5min, put it in a beaker filled with water and soak for 1min , so that the cycle is 5 times, after the last water soaking, dry the aluminum alloy shell...

Embodiment 2

[0061] The same method as in Example 1 was used to prepare the mobile phone shell, except that the surface treatment 1 was to put the above-mentioned aluminum alloy shell body as an anode into an H2SO4 anodic oxidation tank containing about 20 wt% concentration, and electrolyze it at 15V and 18°C 10min, blow dry. Adopt the same method as claim 1 to measure the surface of the aluminum alloy shell body after electrolysis to make a 5um thick aluminum oxide film layer, which contains nano-micropores with a pore size of 20-40nm, and the pore depth of the nano-micropores It is 1um. It is measured that there are corrosion holes with a diameter of 300-1000nm on the surface of the main body of the aluminum alloy shell after soaking, and the depth of the corrosion holes is 4um. It can be observed that there are such as figure 1 The structure shown is similar to the double-layer three-dimensional hollow structure, and there are interconnected structures in the nanopores and corrosion p...

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Abstract

A shell, a method of preparing the shell and an electronic product comprising the shell are provided. The shell may comprise: a metal shell body, a plastic part made of a resin, and an oxide layer formed between the metal body and the plastic part, joining the plastic part to the metal shell body, wherein the oxide layer contains corrosion pores having an average diameter of about 200 nm to about 2000 nm in the surface contacting the plastic part, and nanopores having a diameter of about 10 to 100 nm in the surface contacting the metal shell body, and a part of the resin is filled in the corrosion pore and corrosion pore.

Description

[0001] related application [0002] This application is a divisional application of the Chinese patent application with application number 201210043628.0. technical field [0003] The invention relates to a mobile phone casing and a preparation method thereof, more specifically, to a mobile phone casing formed by integrating aluminum alloy and thermoplastic resin and a preparation method thereof. Background technique [0004] With the improvement of consumption level, consumers not only pay attention to the quality of electronic products, but also pay more and more attention to the texture and touch of their appearance and surface. Electronic products with special texture are very competitive in the market. The metal casing can bring unparalleled visual impact, and has the advantages of fine touch, wear resistance, drop resistance, and corrosion resistance. It has always been highly respected by consumers and represents the development direction of high-end electronic produc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04M1/02C25D11/02B32B9/04B32B27/00
CPCB29K2705/02B29K2081/04B29L2031/3481C25D11/08Y10T428/24917B32B7/04Y10T428/31507H05K5/0091H04M1/0202B32B15/08B29C71/02Y10T428/31533Y10T428/24174B29B13/00B29C2045/14868B29K2715/003C25D11/246C25D11/24B29C45/14795B32B2457/208B29C2071/022B32B7/12B29C45/7207B32B2457/00C25D11/16B29C45/14311
Inventor 孙剑曾娟张云侠程俊陈梁
Owner BYD CO LTD
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