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Preparation method of stainless steel-resin composite and stainless steel-resin composite prepared by same

A stainless steel and composite technology, applied in chemical instruments and methods, layered products, metal layered products, etc., can solve the problem of weak adhesion between stainless steel and resin

Active Publication Date: 2014-07-02
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the technical problem of weak binding force between stainless steel and resin in the stainless steel resin composite prepared in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0015] The invention provides a preparation method of a stainless steel resin composite, comprising the following steps:

[0016] S1, the pre-treated stainless steel substrate needs to be combined with the surface of the resin to attach ink to obtain a stainless steel substrate with an ink layer attached to a part of the surface. The method of adhering ink is not particularly limited in the present invention. For example, methods such as coating and spraying can be used. For example, the pre-treated stainless steel substrate is put into a masking fixture, and the ink is sprayed in the injection area where the resin needs to be bonded. The spraying equipment and operation techniques are well known to those skilled in the art, drying and curing is generally required after spraying, an ink layer is formed on part of the surface of the stainless steel substrate, and the area to be injection-molded is shielded by forming an ink layer on the surface of the stainless steel that needs ...

Embodiment 1

[0039] This example prepares a stainless steel resin composite;

[0040] 1. Pretreatment: Cut a 1mm thick 304 stainless steel plate into rectangular pieces of 15mm*80mm, put it into a polishing machine and grind it, then wash it with absolute ethanol, then sandblast it, rinse it with deionized water, 80 drying at ℃ to obtain pre-treated stainless steel sheets;

[0041] 2. Adhesive ink layer: Put the above stainless steel sheet into the mold, use the mold to cover the non-injection area, and leave the 5mm*80mm area at one end of the stainless steel sheet unmasked. Put the mold into the spraying machine and spray acid-resistant ink 5680 photosensitive ink (Shenzhen Wanhuan Technology Co., Ltd. Jiayuan Chemical Co., Ltd.), drying at 80°C, UV curing, and forming a 15-micron thick ink layer in the unmasked area;

[0042] 3. Oxidation passivation: prepare 500ml of passivation solution in a beaker, and the formula of the passivation solution is: 30wt% nitric acid solution. Put the ...

Embodiment 2

[0049] The stainless steel resin composite sample S2 was prepared in the same manner as in Example 1. The difference is step 3, oxidative passivation: prepare 500ml of oxidizing acid solution, the formula of oxidizing acid solution is: 450g / L sulfuric acid and 230g / L chromium trioxide mixed solution, put the stainless steel sheet obtained above into the oxidizing acid solution as The anode was oxidized for 10 minutes at a voltage of 600mV, and the temperature of the oxidizing acid solution was 60°C, and then the product was taken out, washed, and dried. Using the same method as in Example 1, the thickness of the formed oxide film layer was measured to be about 2000 nm.

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Abstract

The invention relates to a preparation method of a stainless steel-resin composite and a stainless steel-resin composite prepared by the same. The preparation method comprises the following steps: S1. coating an ink on the surface of a pretreated stainless steel substrate in need of combining resin to obtain a stainless steel substrate of which part of surface is coated with an ink layer; S2. carrying out oxidization and passivation on the stainless steel substrate of which part of surface is coated with an ink layer, which is obtained in the step S1; S3. removing the ink layer coated on the surface of the stainless steel substrate obtained in the step S2; S4. putting the stainless steel substrate obtained in the step S3 into an acid and / or salt solution containing 2-30 wt% of A<-> to perform electrochemical corrosion, wherein A is halogen; and S5. carrying out injection molding on a resin composition onto the surface of the stainless steel substrate obtained in the step S4, and forming to obtain the stainless steel-resin composite. The prepared product has the advantages of strong binding force between stainless steel and resin, simple technique, no pollution and low cost, can easily implement large-scale production, and can not cause corrosion of the non-injection molding region of the stainless steel.

Description

technical field [0001] The present invention relates to a method for preparing a stainless steel resin composite and the stainless steel resin composite prepared therefrom, more specifically, to the preparation of a stainless steel resin composite formed by integrating stainless steel with a stronger binding force and a thermoplastic resin The method and the stainless steel resin composite body prepared therefrom. Background technique [0002] In the field of parts manufacturing of automobiles, household electrical appliances, industrial machines, etc., the integrated molding technology of metal and resin is required. At present, the industry uses adhesives to integrate metal and synthetic resin at room temperature or under heating. Although the above method can be used to prepare a composite body formed of metal and plastic, the bonding force between the metal and plastic of the composite obtained according to these methods is poor, and the adhesive has poor acid and alkali...

Claims

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Application Information

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IPC IPC(8): B29C45/14B29C45/17B32B15/08
CPCB29C45/14B29C2045/14868B32B15/08
Inventor 章晓程云郭强
Owner BYD CO LTD
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