Metal resin integrated forming method and metal resin composite

A metal resin and molding method technology, which is applied in the field of metal resin composites and metal resin integrated molding, can solve problems such as poor mechanical strength, complex molding process, and harsh conditions, achieve good mechanical strength and surface treatment characteristics, and solve surface problems. Decoration issues, the effect of meeting diverse needs

Active Publication Date: 2013-09-11
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention solves the technical problems that the plastic in the NMT technology in the prior art is a highly crystalline resin, which leads to complex molding process and harsh conditions, and the plastic surface is difficult to process, cannot satisfy the surface decoration problem, and has poor mechanical strength.

Method used

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  • Metal resin integrated forming method and metal resin composite

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Effect test

Embodiment approach

[0021] As a preferred embodiment of the present invention, the metal surface treatment method further includes: immersing the metal having a nanopore oxide film on the surface into an etching solution to form corrosion holes on the outer surface of the oxide film. The corrosion hole communicates with the nanopore. The double-layer three-dimensional hole structure formed by the corrosion hole and the nano hole is beneficial to further provide the permeability of the resin composition, improve the binding force between the resin composition and the metal, and is more conducive to molding.

[0022] The diameter of the corrosion holes is 200-2000nm, more preferably 200-1000nm, most preferably 400-1000nm. The depth of the corrosion hole is 0.5-9.5um, more preferably 0.5-5um. Further optimizing the structure of the corrosion hole is more conducive to the direct injection of the resin composition and the combination of the resin composition and the alloy during injection molding.

...

Embodiment 1

[0035] (1) Pretreatment: Cut the commercially available A5052 aluminum alloy plate with a thickness of 1mm into rectangular pieces of 18mm*45mm, and then soak it in 40g / L NaOH aqueous solution at a solution temperature of 40°C, wash and dry after 1min, A pretreated aluminum alloy sheet is obtained.

[0036] (2) Surface treatment 1: Put the above aluminum alloy sheet as an anode into H2O containing 20wt% 2 SO 4 In the anodizing tank, electrolyze at 20V, 18°C ​​for 10min, and blow dry.

[0037] Use a metallographic microscope to observe the cross-section of the aluminum alloy sheet after surface treatment 1, and measure the 5um thick aluminum oxide film layer on the surface of the aluminum alloy sheet after electrolysis, and use an electron microscope to observe the surface of the aluminum alloy sheet after surface treatment 1. The aluminum oxide film layer contains nanopores with a diameter of about 40-60 nm, and the depth of the nanopores is 1 μm.

[0038] (3) Surface treat...

Embodiment 2

[0042] The same steps as in Example 1 were used to prepare the metal-resin composite S2 of this example, except that in step (1), a commercially available magnesium alloy plate with a thickness of 3mm was cut into rectangular pieces of 18mm*45mm , to replace the aluminum alloy plate in Example 1;

[0043] In step (2), the above-mentioned magnesium alloy sheet is used as an anode and placed in 20wt% H 2 SO 4 In the anodizing tank, electrolyze at 15V and 18°C ​​for 10min, and blow dry.

[0044] Using a metallographic microscope to observe the cross-section of the magnesium alloy sheet after surface treatment 1, it is measured that a 5um thick magnesium oxide film layer is prepared on the surface of the magnesium alloy sheet after electrolysis, and the aluminum oxide film layer contains nano-micropores with a pore size of 20-40nm , the hole depth of the nano-micropore is 1um.

[0045] Using a metallographic microscope to observe the surface of the magnesium alloy sheet after s...

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Abstract

The invention provides a metal resin integrated forming method which comprises the following steps: A. metal surface treatment: forming nanopores on a metal surface; and B. melting a thermoplastic resin on the metal surface on which the nanopores are formed, and directly carrying out integrated injection forming, wherein the thermoplastic resin is a blend containing a main body resin and a polyolefin resin, the main body resin is a mixture of polyphenylether and polyphenyl thioether, and the melting point of the polyolefin resin is 65-105 DEG C. The invention also provides a metal resin composite prepared by the method. By adopting the noncrystalline main body resin with better surface gloss and toughness in cooperation with the polyolefin resin with the melting point of 65-105 DEG C, the metal resin integrated forming method provided by the invention ensures that the obtained metal resin composite has better mechanical strength and surface treatment characteristic, thereby solving the problem in surface decoration of plastic parts and satisfying the diversified demands of the customers.

Description

technical field [0001] The invention belongs to the field of metal-plastic integrated molding, and in particular relates to a metal-resin integrated molding method and a metal-resin composite body. Background technique [0002] In the fields of automobiles, household electrical appliances, industrial machinery, etc., it is necessary to firmly combine metal and resin. At present, the common technology uses adhesives to function at room temperature or under heating to integrate metal and synthetic resin. . Directly integrating high-strength engineering resins with ferroalloys such as magnesium, aluminum alloys, and stainless steel without adhesives has become a research direction. [0003] Nano Machining Technology (NMT) is the integrated combination technology of metal and plastic. By nano-processing the metal surface, the plastic can be directly injected on the metal surface to obtain a metal-plastic integrated molding product. For the effective combination of metal and pl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C45/14B29B11/00
CPCB32B15/085B29C45/14311B29C45/14778B29C2045/14803B32B27/286B32B2270/00Y10T428/249956B32B15/04B32B27/32B29C45/14B29C45/14811B32B5/18B32B9/005B32B2250/03
Inventor 宫清张雄张宜虎周维
Owner BYD CO LTD
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