Composite body of titanium or titanium alloy and resin and preparation method thereof

Abstract

The invention discloses a composite of titanium or titanium alloy and a resin. The composite comprises a titanium or titanium alloy matrix (1), an aluminium film layer (3), an anode oxide film (4) and a resin layer (5), wherein the aluminium film layer (3) is disposed on at least partial surface of the titanium or titanium alloy matrix (1); and the anode oxide film (4) and the resin layer (5) are laminated on the aluminium film layer (3) in sequence. The invention also provides a preparation method of the composite of titanium or titanium alloy and the resin. The composite of titanium or titanium alloy and the resin has strong binding force between the titanium or titanium alloy matrix and the resin layer. The method provided by the invention is environment-friendly; and the preparation process is simple. The method provided by the invention can be universally used on metals such as titanium or titanium alloy with relatively stable properties, and can compound metal and the resin on metals with complex structures.

Description

technical field [0001] The invention relates to a composite body of titanium or titanium alloy and resin and a preparation method thereof, in particular to a composite body with strong binding force between titanium or titanium alloy and resin and a preparation method of the composite body. Background technique [0002] The technology of integrating metal and resin is required in a wide range of industries such as automobiles, household electrical products, industrial equipment and other parts manufacturing. [0003] At present, there are three main methods for combining titanium or titanium alloys with resins. One is to use adhesives to combine the two with titanium or titanium alloys and formed resins through chemical adhesives; the other is Chemical etching is performed on the surface of titanium or titanium alloy to produce ultra-miniature concave-convex surfaces, and then combined by injection molding; the third is to generate nanoscale holes on the surface of titanium ...

AI Technical Summary

Problems solved by technology

[0004] Among them, the method of using adhesive has poor bonding force and is not resistant to acid and alkali, and the adhesive has a certain thickness, which affects the size of the final product; the method of chemical etching, in order to ensure the bonding force, needs to be heated with concentrated acid or used. For fluorine corrosive liquid, the method of heating concentrated acid takes a long time and consumes a lot of energy, and the acid liquid evaporates and pollutes the environment; the use of fluorine-containing corrosive liquid, due to the high toxicity of fluorine, has high requirements for the production environment, and is a high-pollution and high-risk substance; Anodic oxidation or electrochemical cathodic treatment, the nanopores obtained are small, and the oxide film is very thin, resulting in insufficient depth of nanopores, low bonding force of the obtained injection molding products, and low practicability

And the latter two methods will affect the areas that do not need injection molding, especially the appearance surface, so it is necessary to shield and protect before processing, or perform mechanical processing such as CNC machine tools (CNC) after injection molding is completed.

However, due to low elastic modulus, high cutting force and poor thermal conductivity, titanium and titanium alloys have poor machinability and are easy to damage the tool.

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