The present invention discloses a transparent cyclic olefin copolymer composite material with good processing performance and its preparation. The composite material comprises the following components: cyclic olefin copolymer (COC) in an amount of 89.6-96.6 parts by mass; The content of poly (alpha methylstyrene) resin (AMS resin) is 0-10 parts by mass; Petroleum resin accounts for 0-10 parts by mass; The antioxidant is 0.1 to 0.3 parts by mass. The preparation method is to weigh COC, AMS resin or petroleum resin in proportion, add a small amount of antioxidant, and mix and extrude in a twin-screw extruder for granulation. After cutting and drying, the cyclic olefin copolymer composite material can be obtained. Its excellent optical properties are maintained, while the processing performance of the composite material is also improved, and the mechanical performance is not significantly reduced. It can be widely used in fields such as optical lenses, electronic displays, and medical optical detection devices.
Country Code: CN
Application Number: CN202311390340.5
