NONWOVEN FABRIC OR NONWOVEN COMPOSITE MATERIAL FOR SHIELDING AND ABSORBING ELECTROMAGNETIC WAVE

摘要

The present invention relates to a nonwoven fabric or nonwoven composite material comprising the nonwoven fabric for shielding and absorbing electromagnetic waves, manufactured by using a carbon fiber plated with metal (copper and nickel) produced in an electroless or electrolysis continuous process. The nonwoven fabric of the present invention is thinner and stronger than the conventional art, and has an advantage of being capable of controlling conductivity by controlling only the content of the carbon fiber plated with metal, without need for further addition of conductive powder.

主权项

1. A method for manufacturing a nonwoven fabric for shielding and absorbing electromagnetic waves, the method comprising:
(a) cutting copper and nickel-plated carbon fibers, which are obtained by continuous electroless and electrolytic processes, into chopped carbon fibers with a length of 3-500 mm; (b) mixing and dispersing the chopped copper and nickel-plated carbon fibers, which correspond to a resultant product in step (a), with water at a weight ratio of 1:100-600; (c) adding 3-30% (w/v) of the resultant product in step (b) to water, followed by dispersing; and (d) filtering the resultant product in step (c) and removing water.