Method for preparing surface-metalized coating of epoxy resin matrix composite material

A composite material and epoxy resin technology, applied in metal material coating process, liquid chemical plating, coating, etc., can solve problems such as poor bonding force, poor surface activity, and peeling of the electroless nickel plating layer, and achieve Excellent binding force, improved binding force, and increased contact area

Inactive Publication Date: 2011-02-09
BEIJING SATELLITE MFG FACTORY
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AI Technical Summary

Problems solved by technology

Before electroless nickel plating, due to the poor surface activity of the material, ordinary pretreatment methods can only remove the oil on the surface, and the resulting electroless nickel plating layer has poor bonding force. When the thermal shock method is used to test the bonding force between the coating and the substrate, there will Peeling and bubbling of the coating

Method used

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  • Method for preparing surface-metalized coating of epoxy resin matrix composite material
  • Method for preparing surface-metalized coating of epoxy resin matrix composite material

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Embodiment Construction

[0030] The present invention as figure 1 shown in the following steps:

[0031] 1. Put the epoxy resin-based composite material into the chemical degreasing tank for alkali washing and degreasing to remove all kinds of oil stains on the surface of the parts. The lye (the solutions are all aqueous solutions, and the remaining components are water, the same below) contains sodium hydroxide 5-10g / L, sodium phosphate 10-40g / L, sodium carbonate 10-20g / L, and the temperature is 50-80°C. The time is 10-30 minutes.

[0032] 2. Use a mixed acid solution to roughen the surface of the material to increase the surface roughness. For epoxy resin-based composite materials, the content of sulfuric acid in the roughening solution is 100-300mL / L, and the content of chromic anhydride is 50-200g / L. The roughening temperature is generally 60-90°C, and the time is 1-5 minutes.

[0033] Roughening is an important process in electroless nickel plating on the surface of epoxy resin-based composite...

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Abstract

The invention discloses a method for preparing a surface-metalized coating of an epoxy resin matrix composite material. According to the use requirement of a product, the surface of the product requires metal-plating treatment; and aiming at the problem that the epoxy resin matrix composite material has poor conductivity and cannot be directly plated on the surface. Through a test, a chemical nickel-plating method is adopted to metalize the surface of the epoxy resin matrix composite material; the surface metalized epoxy resin matrix composite material is used as an excellent conductive matrix for the plating; and the subsequent plating treatment is performed. Before the chemical nickel-plating, the material has poor surface activity, and the common pretreatment method only can remove the oil stain from the surface, so an obtained chemically nickel-plated layer has poor binding force. In the method, a pretreatment process of removing oil, roughening, neutralizing, sensitizing and activating is adopted so as to effectively form a catalytic and active center, and facilitate the binding of the chemically nickel-plated layer.

Description

technical field [0001] The invention relates to a preparation method applied to surface metallization of three-dimensional packaging materials for electronic products, and belongs to the technical field of electromagnetic shielding of electronic packaging products. Background technique [0002] Electromagnetic radiation from electronic equipment will affect the normal operation of other electronic equipment around, and even endanger human health. Therefore, electromagnetic shielding of electronic devices and equipment has become a major problem to be solved. At present, non-conductive epoxy resin-based composite materials are mostly used in the packaging of electronic products. In order to make them have the function of electromagnetic shielding, a layer of conductive plating or coating can be formed on the surface of the material by plating, spraying and other methods. [0003] According to the use requirements of the product, the surface of the epoxy resin-based composite...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C18/36C23C18/20
Inventor 赵贵梅张立功李思振李家峰
Owner BEIJING SATELLITE MFG FACTORY
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