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Anodizing electrolyte and preparation method of magnesium alloy and resin complex

A technology of anodizing and manufacturing method, which is applied in the direction of anodizing, etc., can solve the problems such as the inability to meet the requirements of structural strength and the low bonding strength of magnesium alloy and resin.

Inactive Publication Date: 2018-03-09
广东东明新材科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the traditional combined forming technology of magnesium alloy and resin usually uses adhesives to realize the bonding of magnesium alloy and resin at room temperature or high temperature, so as to obtain a composite of magnesium alloy and resin, and the bonding strength of magnesium alloy and resin is low
In addition, although the magnesium alloy and resin composite prepared by nano-injection molding with some existing magnesium alloy treatment methods can improve the bonding strength of magnesium alloy and resin compared with the method of using adhesives, however, the bonding strength Only below 20MPa, it cannot meet the structural strength requirements of some products

Method used

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  • Anodizing electrolyte and preparation method of magnesium alloy and resin complex
  • Anodizing electrolyte and preparation method of magnesium alloy and resin complex
  • Anodizing electrolyte and preparation method of magnesium alloy and resin complex

Examples

Experimental program
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Effect test

Embodiment 1

[0063] Using AZ91D magnesium alloy, first use weakly alkaline degreasing agent (degreasing agent composition: 18g / L sodium pyrophosphate, 20g / L sodium tripolyphosphate, 25g / L sodium gluconate, 1g / LOP emulsifier, 1.5g / LP60 sodium benzenesulfonate), ultrasonic degreasing for 5 minutes at a temperature of 60°C to remove the oil on the surface of the magnesium alloy; take out the magnesium alloy and wash it with deionized water, and then immerse the magnesium alloy in the acid activator (acid activator composition: 8g / L citric acid, 12g / L nitric acid, 10g / L sulfuric acid), activate for 1 minute at a temperature of 60°C to remove the oxide skin on the surface of the magnesium alloy and improve the surface state of the magnesium alloy; take out the magnesium alloy and rinse with deionized water After washing, the magnesium alloy is subjected to alkaline activation treatment (alkaline activator composition: 25g / L sodium hydroxide, 25g / L oxidizing agent, 15g / L complexing agent), formi...

Embodiment 2

[0065] Using AZ91D magnesium alloy, first use weakly alkaline degreasing agent (degreasing agent composition: 17g / L sodium pyrophosphate, 15g / L sodium tripolyphosphate, 16g / L sodium gluconate, 1g / LOP emulsifier, 2g / LP60 Sodium benzenesulfonate), ultrasonic degreasing 5 minutes, temperature 60 ℃, to remove the magnesium alloy surface greasy dirt; After taking out the magnesium alloy, wash it with deionized water, then immerse the magnesium alloy in the acidic activator (acidic activator composition: 10g / L citric acid, 15g / L nitric acid, 15g / L sulfuric acid), activate for 1 minute at a temperature of 60°C to remove the oxide skin on the surface of the magnesium alloy and improve the surface state of the magnesium alloy; After washing, the magnesium alloy is subjected to alkaline activation treatment (alkaline activator composition: 30g / L of sodium hydroxide, 25g / L of oxidizing agent, and 15g / L of complexing agent), forming micron-scale unevenness on the surface of the magnesium ...

Embodiment 3

[0067]Using AZ91D magnesium alloy, first use weakly alkaline degreasing agent (degreasing agent composition: 20g / L sodium pyrophosphate, 15g / L sodium tripolyphosphate, 10g / L sodium gluconate, 3g / LOP emulsifier, 1g / LP60 Sodium benzenesulfonate), ultrasonic degreasing for 5 minutes, temperature 60 ℃, to remove the surface oil on the magnesium alloy; take out the magnesium alloy and wash it with deionized water, then immerse the magnesium alloy in an acidic activator (activator composition: 10g / In L citric acid, 15g / L nitric acid, 15g / L sulfuric acid), activate for 1 minute at a temperature of 60°C to remove the oxide skin on the surface of the magnesium alloy and improve the surface state of the magnesium alloy; wash the magnesium alloy with deionized water after taking it out , then magnesium alloy is carried out alkaline activation treatment (alkaline activator composition: the sodium hydroxide of 30g / L, the oxidizing agent of 25g / L, the complexing agent of 15g / L), form micron...

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Abstract

The invention provides an anodizing electrolyte and a preparation method of a magnesium alloy and resin complex, wherein the anodizing electrolyte is prepared from the following components with mass concentration: an inhibitor of which the mass concentration is 1g / L-20g / L, an oxidizer of which the mass concentration is 5g / L-20g / L, salts of which the mass concentration is 1g / L-50g / L, and alkaline matters of which the mass concentration is 5g / L-10g / L, wherein the salts include at least one of phosphate, molybdate and sulfate; and the alkaline matters include at least one of sodium hydroxide, sodium carbonate, sodium bicarbonate, potassium hydroxide, potassium carbonate, potassium bicarbonate, hydrazine hydrate and ammonia water. Because alkaline liquor is added to the anodizing electrolyte,in the process of anodizing magnesium alloy, a nano-scale porous membrane formed on the surface of the magnesium alloy is more uniform, so that when the magnesium alloy is subjected to subsequent injection molding treatment, resin enters nano-scale pores and troughs during injection molding, and then, the magnesium alloy and the resin part have higher bonding strength.

Description

technical field [0001] The invention relates to the technical field of surface treatment, in particular to an anodic oxidation electrolyte and a method for manufacturing a magnesium alloy and resin composite. Background technique [0002] With the development of science and technology, the requirements for various properties of materials are getting higher and higher. How to integrate the properties of various materials together to obtain new materials that surpass the properties of a single material itself has become a hot research topic today. NMT (NanoMolding Technology, nano-injection molding) technology is a method of combining metal and plastic with nanotechnology. After the metal surface is nano-treated, the plastic is directly injected on the metal surface, so that the metal and plastic can be integrally formed to form metal and plastic. The composite body can not only take into account the appearance and texture of metal, but also simplify the design of product mech...

Claims

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Application Information

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IPC IPC(8): C25D11/30B29C45/14
CPCB29C45/14B29C2045/14868C25D11/30
Inventor 龚福宝李远衡邝金才况金权
Owner 广东东明新材科技有限公司
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