The invention discloses a plastic surface treatment method. The plastic surface treatment method comprises the following steps: S1, allowing a plastic to be subjected to degreasing treatment by using a degreasing solvent; S2, performing oxidizing flame treatment: roughening the plastic surface by using a piece of abrasive cloth, and then placing the plastic above the oxidizing flame for calcination; S3, impregnating the plastic in a sodium hydroxide solution for 3-5 min, and then flushing the plastic with cold water; S4, performing activation treatment: impregnating the plastic in a mixed solution of chromic acid and concentrated sulphuric acid for 5-10 min; S5, performing oxidation treatment: performing oxidation on the plastic in a mixed solution of potassium dichromate and concentrated sulphuric acid for 5-7 min; S6, drying after washing. The plastic surface treatment method is simple in process; the treated plastic is easy to glue and high in joint strength.

Plastic surface treatment method

The invention discloses a method for preparing a compound conductive layer on the surface of epoxy resin. The silver-nickel compound conductive layer is formed on the surface of the epoxy resin by chemical silver plating and nickel electroplating. The method comprises the steps as follows: 1, carrying out chemical silver plating, wherein the chemical silver plating process comprises the following concrete sub-steps of removing stress, removing oil, roughening, neutralizing, reducing, sensitizing and chemically plating silver, and forming a conductive silver layer on the surface of the epoxy resin; and 2, carrying out nickel electroplating on the epoxy resin with the conductive silver layer to obtain the silver-nickel conductive layer on the surface of the epoxy resin at last. Compared with the conventional chemical plating, the used time of the compound conductive layer prepared by the method is greatly shortened and the obtained compound conductive layer has the characteristics of bright and flat surface and strong bonding force; in addition, the nickel has the advantages of corrosion resistance and good conductivity, and the epoxy resin as a basis material has the advantages of high mechanical property, good process property and excellent chemical drug resistance, so that the usability of the whole material is greatly enhanced.

Method for preparing compound conductive layer on surface of epoxy resin

The present invention relates to a process for metallizing nonconductive plastics using an etching solution free of hexavalent chromium. The etching solution is based on an sulphuric acidic solution comprising a source of chlorate ions and a vanadium compound. After the treatment of the plastics with the etching solution, the plastics are metallized by means of known processes.

Process for metallizing nonconductive plastic surfaces

A transparent acrylonitrile butadiene styrene (ABS) hydroelectric plating production process method comprises the following steps of deoiling, hydrophilic treatment, coarsening, neutralizing, surface adjustment, product presoaking, activating, nickel/copper plating, laser etching, pyrophosphate copper electroplating, fine copper electroplating, nickel electroplating, fine chrome electroplating, drying and the like. ABS prepared through the transparent ABS hydroelectric plating production process method has an anti-static function and a transparent effect, and meanwhile a hydroelectric plating which is good in adhesive force is electroplated on the surface of the ABS.

Transparent acrylonitrile butadiene styrene (ABS) hydroelectric plating production process method

The invention refers to a process for metallization of an article having a plastic surface avoiding the metallization of the rack which fixes the article within the plating bath.

Process for metallization of an article having a plastic surface avoiding the metallization of the rack which fixes the article within the plating bath

The invention relates to an electroplating pretreatment method for an acrylonitrile butadiene styrene (ABS) plastic surface The electroplating pretreatment method comprises the following process steps of: eliminating stress, performing alkali washing for oil removal, pickling, roughening, performing neutralizing treatment, performing chemical activation, and performing the conventional electroplating, wherein in the chemical activation process, plastic base materials are put in to an activation solution and are subjected to hyperthermic treatment in a water bath for a certain period of time, each liter of the activation solution comprises 10 to 12g of nickel sulfate, 20 to 25g of sodium hypophosphite and 5 to 8g of sodium citrate, the pH is 9 to 11, and the temperature is between 70 and 75 DEG C In the invention, a novel method in which metal palladium activation is not used is provided, can be used for replacing a sodium borohydride and methanol activation process and contributes to environment friendliness; and on the basis of pretreatment, the plastic surface can be directly electroplated, so that the problems of complicated treating processes, high PdCl2 prices, high pollution possibility of a plating solution and the like are solved

Jin Yu

Papers

Electroplating pretreatment method for acrylonitrile butadiene styrene (ABS) plastic surface