Metallic Coating of Acrylic Polymer Parts
Original Publication Date: 1985-Apr-01
Included in the Prior Art Database: 2005-Feb-18
In the metallic coating of parts of acrylic polymer, the parts are first cleaned and then subjected to a glow discharge in nitrogen, during which metal is deposited by DC sputtering. A top coating is then provided by electroless plating. Acrylic polymer is used in many applications, but is rarely metal coated because of poor metallic adhesion to its surface. Parts of acrylic polymer are annealed at 60ŒC for at least 24 hours and then thoroughly cleaned in isopropylalcohol in order to remove surface contaminants, particularly monomer. The parts are then subjected to a glow discharge in nitrogen with 5% hydrogen, during which silver is DC sputtered onto selected surfaces.