Method for increasing roughness of aluminum alloy and preparation method of aluminum alloy resin composite

Abstract

The invention relates to the technical field of aluminum alloys, in particular to a method for increasing the roughness of an aluminum alloy and a preparation method of an aluminum alloy resin composite. The preparation method of the aluminum alloy resin complex comprises the following steps that an aluminum alloy workpiece is pretreated, then the aluminum alloy workpiece is treated through a surface treating agent, and the surface roughness of the aluminum alloy is increased; the aluminum alloy workpiece is subjected to primary soaking treatment through alkali liquor, and then the aluminum alloy workpiece is subjected to secondary soaking treatment through acid liquor; preparing nano holes in the surface of the aluminum alloy by adopting a micropore treating fluid; and an aluminum alloy workpiece is put into injection molding equipment, then the resin composition is injected to the surface of the aluminum alloy base material, injection molding is conducted, and the aluminum alloy resin composite is obtained. According to the method, the roughness of the aluminum alloy and the distribution uniformity of the surface roughness can be improved, the binding force of the resin composition in the prepared aluminum alloy resin composite and the aluminum alloy is high, and the aluminum alloy resin composite has good sealing performance and waterproof performance and is long in service life.

Description

technical field [0001] The invention relates to the technical field of aluminum alloys, in particular to a method for increasing the roughness of aluminum alloys and a method for preparing an aluminum alloy resin composite. Background technique [0002] Aluminum alloy nano-processing technology is to process the aluminum alloy through a series of treatments to make the metal surface have an irregular hole structure, and then put the processed aluminum alloy workpiece into the mold for in-mold injection molding, and directly inject the resin component into the metal. On the surface, the resin enters the pore structure of the aluminum alloy surface and combines with the metal to realize the integration of metal and resin. However, in the existing aluminum alloy surface treatment methods, when roughening the aluminum alloy surface, there are often The corrosion rate of aluminum alloy is not easy to control, the surface roughness is uniform, and the corrosiveness to the aluminum...

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Problems solved by technology

[0002] Aluminum alloy nano-processing technology is to process the aluminum alloy through a series of treatments to make the metal surface have an irregular hole structure, and then put the processed aluminum alloy workpiece into the mold for in-mold injection molding, and directly inject the resin component into the metal. On the surface, the resin enters the pore structure of the aluminum alloy surface and combines with the metal to realize the integration of metal and resin. However, in the existing aluminum alloy surface treatment methods, when roughening the aluminum alloy surface, there are often The corrosion rate of aluminum alloy is not easy to control, the surface roughness is uniform, and the corrosiveness to the aluminum alloy substrate is too large, which affects the visual effect of the aluminum alloy surface appearance; at the same time, the combination of aluminum alloy and resin is not tight, and the sealing between layers is not good. Products with airtight and waterproof requirements cannot meet the product requirements, and provide a method for increasing the roughness of aluminum alloys with good treatment effects and a preparation method for aluminum alloy resin composites, so that the aluminum alloy and resin have a strong bonding force and improve product performance and use. lifespan is very important