A kind of glass fiber reinforced polycarbonate composite material and its preparation method and application

Abstract

The invention discloses a glass fiber reinforced polycarbonate composite material and its preparation method and application, comprising the following composition: Component A: 40-90 parts of polycarbonate; Component B: polysiloxane block copolymer 5-60 parts; Component C: 5-30 parts of glass fiber; Component D: 2-40 parts of fluorine-containing compound; Component E: 1-30 parts of silicone. The present invention chooses to add specific content of polysiloxane block copolymer, fluorine-containing compound and silicone to the formula of glass fiber reinforced polycarbonate composite material, so as to ensure that the final prepared composite material has specific siloxane The content and the specific weight ratio of fluorine and silicon make the prepared composite material not only have excellent high modulus and high toughness characteristics, but also have excellent processing performance. Compared with conventional reinforcement modification methods, the composite material has both Rigid and tough, with high fluidity and significantly reduced dielectric loss, it is especially suitable for the 5G communication industry.

Description

technical field [0001] The invention relates to the technical field of engineering plastics, in particular to a glass fiber reinforced polycarbonate composite material and its preparation method and application. Background technique [0002] Polycarbonate resin PC is a thermoplastic engineering plastic with excellent comprehensive properties. In recent years, its high transparency, good flame retardancy, heat resistance, electrical insulation and dimensional stability, low water absorption and other characteristics have been widely used in automobiles, electronics, communications industries, construction industries, etc. field. With the expansion of its application fields, the impact strength, flexural modulus, tensile strength, fluidity, dielectric loss and other properties of polycarbonate have higher requirements. Pure polycarbonate or ordinary polycarbonate The material still cannot meet the requirements, therefore, the polycarbonate material needs to be modified. In ...

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Problems solved by technology

[0003] However, the existing glass fiber reinforced polycarbonate composites have the contradiction of high rigidity but low toughness, and the conventional toughening method is to directly add toughening agent, which will also greatly reduce the fluidity of the composite material, and the composite material The improvement of rigidity and toughness is also very limited, and due to the inherent dielectric loss application characteristics of polycarbonate, its application in the automotive, electrical and electronic, communication industry, construction industry and other fields is severely limited, especially in the 5G communication industry.

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