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Preparation method of high-stability metal material coated with resin on surface

A surface coating and metal material technology, which is applied to the surface treatment of aluminum and aluminum alloys. In the field of metal surface nano-injection molding, it can solve the problem of ineffective removal of corrosion-resistant sputtered metals, high equipment costs, and inability to effectively remove moisture, etc. question

Active Publication Date: 2018-12-14
无锡市恒利弘实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although ordered micron-scale pores are obtained, the following problems are still faced: (1) the corrosion-resistant sputtering metal cannot be effectively removed, which will affect the binding force and later stability; (2) the template preparation is difficult and the equipment cost is relatively high. High; (3) The process is cumbersome and restricts the operation
[0007] In addition, heat treatment is also used in the prior art to remove moisture in the oxide film in order to improve the long-term stability between the resin and the nanopores, such as the surface-treated aluminum material disclosed by UACJ Hasegawa Shinichi and its manufacturing method and the Surface-treated aluminum / resin layer joint (CN106460221A), heat-treated so that the moisture contained in the oxide film is 10 μg / cm 2 (i.e. 100mg / m 2 ) below, the heat treatment method: the time from the end of the AC electrolytic treatment until the surface temperature of the aluminum material with an oxide film formed in an atmosphere exceeding 150 °C reaches 150 °C within 24 hours, which is not effective Remove the moisture in the oxide film, and the moisture in the oxide film is actually higher than 10μg / cm 2 , that is, the method of removing moisture in the oxidation channel through heat treatment in the prior art still needs to be improved. Based on this content, the present invention provides an improved heat treatment method, and uses it in the field of macroporous-mesoporous corrosion pore nano-injection molding

Method used

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  • Preparation method of high-stability metal material coated with resin on surface
  • Preparation method of high-stability metal material coated with resin on surface
  • Preparation method of high-stability metal material coated with resin on surface

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] The processing method about aluminum or aluminum alloy metal substrate mainly includes the following steps (as attached Figure 4-5 shown):

[0078](1) Pretreatment: Mechanically treat the surface of aluminum or aluminum alloy metal to remove the nano-scale natural oxide layer on the surface of aluminum or aluminum alloy. The oxide layer has low bonding force with the substrate and poor physical and chemical properties. Therefore, The process of mechanical pretreatment is indispensable. The mechanical treatment includes one of grinding, polishing, tumbling, sandblasting or shot blasting; followed by alkaline or acidic degreasing agent to chemically remove the grease on the metal surface, Since a layer of oil will inevitably adhere to the metal surface when mechanically treating the metal substrate, in order to ensure the firm combination of the substrate and the oxide film or nano-injection material, the oil on the metal surface must be removed.

[0079] Its chemical d...

Embodiment 2

[0091] As mentioned above, the inventor CN201711256603A patent prepares ordered micron-scale pores by preparing templates: specific steps (1) Use one of the treatment methods of polishing, polishing, rolling, sandblasting or shot blasting to remove the nanoscale holes on the metal surface. (2) soak the treated metal in an alkali metal cleaning solution; (3) wash with pure water and dry; (4) cover metal Ni, Cr, Cu or their alloys on the surface of the metal substrate A corrosion-resistant metal template, the metal template is divided into a blank area and a metal area; (5) physically sputtering a corrosion-resistant metal on the substrate surface of the metal template in step (4); (6) removing the corrosion-resistant metal template, the The metal substrate after physical sputtering treatment is immersed in acid corrosion solution, and the substrate is corroded multiple times to corrode uniformly distributed micron-scale corrosion holes, which are washed with pure water, and the ...

Embodiment 3

[0113] The metal substrate obtained in Example 1 was subjected to PPS nano-injection molding.

[0114] Specific steps are as follows:

[0115] (1) Mechanical polishing; (2) Chemical degreasing; (3) Surface coating with corrosion-resistant coating; (4) Laser engraving grooves to expose aluminum or aluminum alloy metal; (5) Exposed aluminum or aluminum alloy metal (6) freeze-drying; (7) chemical corrosion to obtain mesopores; (8) heat treatment to remove moisture and coating in the metal substrate; (9) nano injection molding, where the The resin melting temperature of the nano-injection molding is 200-300°C, the temperature of the nano-injection molding is 70-90°C, the pressure of the injection molding is 70-130Mpa, and the speed of the nano-injection molding is 400-900mm / s.

[0116] Among them, mechanical polishing is selected from polishing to remove the nano-scale natural oxide layer on the surface of aluminum or aluminum alloy.

[0117] Wherein use alkaline degreaser degre...

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Abstract

The invention provides a preparation method of a high-stability metal material coated with resin on the surface. The method mainly comprises steps of pretreatment, anodizing, coating of a corrosion-resistant coating on the surface, laser etching of grooves, electrochemical corrosion, freeze-drying, chemical corrosion, removal of moisture and the coating in a metal substrate through thermal treatment and the like. The obtained metal surface has very high porosity and low moisture content, the binding force between nano injection molded resin and the metal substrate is high, the stability is high, and the fluctuation is small.

Description

technical field [0001] The invention relates to the field of metal surface treatment, and relates to an aluminum and aluminum alloy surface treatment method to obtain a high-pore-density aluminum or aluminum alloy metal base material, and a method for nanometer injection molding on the metal surface. Background technique [0002] Japan's Taiseiplas Co., Ltd. invented nano-molding technology (NMT) in 2002. This technology is a nano-molding technology that integrates metal and plastic. It can integrate metal and resin into molding. It is widely used in thin and light. On the casing of portable mobile electronic products, such as computer terminals and mobile phones. [0003] In the current technology, the treatment process of NMT includes the following process: the metals to be combined are treated with lye, acid, weak acid of ester acid, washed with water, dried and injected. After the metal surface is treated, countless micropores with a diameter of about 20nm will be forme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C45/14B29B11/00B29B11/14
CPCB29B11/14B29C45/14795B29C2045/14803B29C2045/14901B29C2045/14868B29C49/071B29C2949/0715Y02E60/10
Inventor 白林森梁莲芝
Owner 无锡市恒利弘实业有限公司
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