Plating pretreatment method for abs resin surface, plating treatment method for abs resin surface, and abs resin plated product

Abstract

A treatment device has: a treatment tank provided with a constant temperature heater on the outer periphery; an electrolytic cell continuing from a pipe provided with a circulation pump; and a pipe for supply to the treatment tank from the electrolytic cell. Within the electrolytic cell are provided an anode and a cathode formed from diamond electrodes and a bipolar electrode disposed between the two. The treatment tank and the electrolytic cell are filled with a prescribed concentration of sulfuric acid. The treatment device is configured such that a persulfate solution such as peroxydisulfuric acid is generated by electrolysis of the sulfuric acid by making a prescribed current flow from a direct current power supply unit to the anode and the cathode, and this persulfate solution can be supplied to the treatment tank via the pipe.

1 . A plating pretreatment method for an ABS resin surface, the method comprising treating an ABS resin with a solution obtained by electrolysis of sulfuric acid. 
     
     
         2 . The plating pretreatment method for an ABS resin surface according to  claim 1 , wherein a concentration of sulfuric acid in the solution is 60% to 87% by weight. 
     
     
         3 . The plating pretreatment method for an ABS resin surface according to  claim 1 , wherein a temperature of treating is 50° C. to 80° C. 
     
     
         4 . The plating pretreatment method for an ABS resin surface according  claim 1 , wherein a concentration of persulfuric acid in the solution is 3 g/L or more. 
     
     
         5 . A plating treatment method for an ABS resin surface, the method comprising subjecting an ABS resin surface to electroless plating or electroplating after treating the surface by the plating pretreatment method for an ABS resin surface according to  claim 1 . 
     
     
         6 . An ABS resin plated product which has been subjected to plating treatment by the plating treatment method for an ABS resin surface according to  claim 5 .