Plastic molded product comprising copper-based compound microparticles and preparation method therefor

A method for manufacturing a molded plastic products, the method comprising the steps of:

• reacting copper sulfate with sulfuric salt, at a molar ratio of 1:1 in an aqueous solution at a temperature of 10˜80° C, thereby synthesizing copper sulfide particulates;
• and
• dispersing the copper sulfide particulates in a thermoplastic resin to form a molded plastic product,
• wherein the copper sulfide particulates have a chemical structure of CuxSy satisfying x/y=0.8 to 1.5, x and y representing values greater than 0;
• the molded plastic product has an antibioisis that increases gradually as the x/y decreases;
• and
• the copper sulfide particulates have an X-ray diffraction pattern that includes peaks corresponding to a crystal structure of copper.