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Metal resin integrated forming method and metal resin composite

A metal resin and molding method technology, applied in the field of metal resin composite and metal resin integrated molding, can solve the problems of complex molding process, difficult processing, poor mechanical strength, etc., and achieve simplified molding process, good mechanical strength and Surface treatment characteristics, the effect of improving light transmittance

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, harsh conditions, difficult surface processing, inability to meet surface decoration problems, and poor mechanical strength

Method used

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Examples

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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 with the nanoporous oxide film layer formed on the surface in an etching solution to form corrosion holes on the outer surface of the oxide film layer. The corrosion hole communicates with the nanopore. The double-layer three-dimensional hole structure formed by corroded holes and nanopores is beneficial to further improve the permeability of the resin composition, improve the bonding force of the resin composition and the metal, and is more favorable for molding.

[0022] The pore diameter of the etching hole is 200-2000 nm, more preferably 200-1000 nm, most preferably 400-1000 nm. The depth of the corrosion hole is 0.5-9.5um, more preferably 0.5-5um. Further optimization of 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 injecti...

Embodiment 1

[0034] (1) Pre-treatment: Cut a commercially available A5052 aluminum alloy plate with a thickness of 1mm into 18mm*45mm rectangular pieces, and then immerse them in a 40g / L NaOH aqueous solution at a temperature of 40°C. Wash and dry after 1 min. A pre-treated aluminum alloy sheet is obtained.

[0035] (2) Surface treatment 1: Put the above aluminum alloy sheet as an anode containing 20wt% H 2 SO 4 In the anodizing tank, electrolyze at 20V voltage and 18°C ​​for 10min, and blow dry;

[0036] The cross section of the aluminum alloy sheet after surface treatment 1 was observed with a metallurgical microscope, and a 5um thick aluminum oxide film was obtained on the surface of the aluminum alloy sheet after electrolysis. The surface of the aluminum alloy sheet after surface treatment 1 was observed by an electron microscope. The aluminum oxide film layer contains nanopores with a pore diameter of about 40-60 nm, and the depth of the nanopores is 1 um.

[0037] (3) Surface treatment 2: ...

Embodiment 2

[0041] The metal resin composite body S2 of this embodiment was prepared by the same steps as in embodiment 1, 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;

[0042] In step (2), the above-mentioned magnesium alloy sheet is used as an anode into the H 2 SO 4 In the anodizing tank, electrolyze at 15V voltage and 18°C ​​for 10min, and blow dry.

[0043] A metallographic microscope was used to observe the cross-section of the magnesium alloy sheet after surface treatment 1, and it was measured that a 5um thick magnesium oxide film was prepared on the surface of the magnesium alloy sheet after electrolysis. The aluminum oxide film contained nano-pores with a diameter of 20-40nm. , The depth of the nano-micropore is 1um.

[0044] The surface of the magnesium alloy sheet after surface treatment 2 was observed with a metallographic microscope. ...

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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 polycarbonate, 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 integral molding, and specifically relates to a metal-resin integral molding method and a metal-resin composite body. Background technique [0002] In the manufacturing of parts such as automobiles, household appliances, industrial machinery, etc., it is necessary to firmly bond metal and resin. At present, common technologies use adhesives to function at room temperature or under heating to integrate metal and synthetic resin. . The direct integration of high-strength engineering resins with iron alloys such as magnesium, aluminum alloy, and stainless steel without using adhesives has become a research direction. [0003] Nano-processing technology (NMT) is the integration of metal and plastic technology. By nano-processing the metal surface, the plastic is directly injection molded on the metal surface to obtain a gold-plastic integrated molding product. For the effective combination of metal and plastic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C45/14B29B11/00
CPCB32B15/08B32B27/32B32B27/365B32B2270/00B29C45/14311B29C45/14778B29C2045/14803C25D11/08C25D11/16C25D11/24C25D11/30C25D11/34Y10T428/24545Y10T428/31507B29K2069/00B29K2105/0005B29K2105/0088B29K2705/02B29K2715/003B29K2995/0097B29L2009/003B29C45/14795B29C2045/14868B32B2311/24B32B2311/30B32B2369/00B32B2509/00B32B2605/08
Inventor 宫清张雄张宜虎周维
Owner BYD CO LTD
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