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A kind of preparation method of stainless steel resin composite body and the stainless steel resin composite body prepared therefor

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

Active Publication Date: 2016-04-27
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 method for preparing a stainless steel resin composite body, comprising the following steps:

[0016] S1, attaching ink to the surface of the pretreated stainless steel substrate that needs to be bonded with resin to obtain a stainless steel substrate with an ink layer attached to 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, such as putting the pre-treated stainless steel substrate into a masking fixture, spraying ink on the injection molding area that needs to be combined with resin, and spraying equipment And the operation technology is well known to those skilled in the art. After spraying, it generally needs to be dried and solidified to form an ink layer on the surface of the stainless steel substrate. By forming an ink layer on the surface of the stainless steel that needs to be bonded with the resin, the area to be injected is co...

Embodiment 1

[0039] This embodiment prepares the stainless steel resin complex;

[0040] 1. Pretreatment: Cut 1mm thick 304 stainless steel plate into 15mm*80mm rectangular slices, put it into a polishing machine for grinding, and then wash it with absolute ethanol, then sandblast it, rinse it with deionized water, 80 Drying at ℃ to obtain the pretreated stainless steel sheet;

[0041] 2. Adhesive ink layer: Put the above stainless steel sheet into the mold, use the mold to cover the non-injection area, and the 5mm*80mm area at one end of the stainless steel sheet is not covered, put the mold into the spraying machine, spray acid-resistant ink 5680 photosensitive ink (Shenzhen Wan Jiayuan Chemical Co., Ltd.), dried at 80°C, UV cured, and formed a 15 micron thick ink layer on the unmasked area;

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

Embodiment 2

[0049] A stainless steel resin composite sample S2 was prepared in the same manner as in Example 1. The difference is step 3, oxidation 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, the above-mentioned gained stainless steel sheet is put into oxidizing acid solution as The anode is oxidized at 600mV for 10 minutes, the temperature of the oxidizing acid solution is 60°C, and then the product is taken out, washed and dried. The thickness of the formed oxide film layer measured by the same method as in Example 1 is about 2000 nm.

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Abstract

The invention provides a method for preparing a stainless steel resin composite body and the stainless steel resin composite body prepared therefrom. The preparation method of the stainless steel resin composite body includes the following steps: S1, on the surface of the pretreated stainless steel base material that needs to be bonded with the resin Attaching ink to obtain a stainless steel substrate with an ink layer attached to the surface; S2, performing oxidation passivation on the stainless steel substrate with an ink layer attached to the surface obtained in step S1; S3, removing the ink attached to the surface of the stainless steel substrate obtained in step S2 layer; S4, put the stainless steel base material obtained in step S3 into an acid and / or salt solution containing 2-30wt% A- to carry out electrochemical corrosion, and the A is a halogen; S5, inject the resin composition in the step The surface of the stainless steel base material obtained in S4 is molded to obtain a stainless steel resin composite body. The prepared product has a strong bonding force between stainless steel and resin, and the process is simple and easy to produce on a large scale. Low.

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