▎ 摘　　要

NOVELTY - Composite paint comprises 5-30 pts. wt. micro-nano mussel shell powder, 8-15 pts. wt. graphene, 10-20 pts. wt. nano metal or metal oxide, 3-5 pts. wt. curing agent, 2-5 pts. wt. antifoaming agent, 5-15 pts. wt. water and solvent (balance amount), where the metal is iron or aluminum, the metal oxide is aluminum oxide or magnetic iron(II,III) oxide, the curing agent is dodecyl alcohol ester or 2-methylimidazole, the antifoaming agent is emulsified silicone oil, higher alcohol fatty acid ester complex or polyoxyethylene polyoxypropylene alcohol amine ether, and the solvent is polyurethane. USE - The paint is useful for protecting high-frequency electromagnetic wave radiation (claimed). ADVANTAGE - The paint has shielding effectiveness of medium, high frequency electromagnetic wave of 1.5 GHz to 300 kHz can reach 35.632~47.777dB; uses waste sea-mussel shell as raw material to improve resource value of mussel shell, protects ecological environment construction of Zhoushan and promotes marine industry. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing composite paint comprising adding water into solvent at 25-40 degrees C and stirring at a speed of 140-150 revolutions/minute for 30-60 minutes to obtain primary material liquid, then adding micro-nano mussel shell powder, graphene, nano metal or metal oxide, stirring at a speed of 300-350 revolutions/minute for 30-60 minutes to obtain secondary material liquid, then adding curing agent and antifoaming agent into secondary material liquid, and stirring at a speed of 50-60 revolutions/minute for 30-60 minutes to obtain final product.