Conductive cyclic polyolefin composite material and preparation method thereof

Abstract

The invention relates to a conductive cyclic polyolefin composite material and a preparation method thereof. The composite material comprises the following components in parts by weight: 80-88 parts of cyclic polyolefin nozzle crushed material,2-6 parts of super-conductive multi-walled carbon nanotubes, 1-2 parts of conductive carbon black, 5-15 parts of a toughening agent, 1-3 parts of a hyperdispersant, 0.3-0.8 part of a compatibilizer, 0.3-0.6 part of an antioxidant, 0.3-0.8 part of a heat stabilizer and 0.8-2.5 parts of liquid wax. The conductive cyclic polyolefin composite material disclosed by the invention has the characteristics of high dimensional stability, high thermal deformation, relatively high fluidity, low warping property, extremely low moisture absorption rate, stable electric conduction and static electricity resistance and the like, and can be used for electronic product shells, electronic product packaging discs, coating discs and the like. The method is suitable for continuous production, low in production cost and capable of effectively recycling the nozzle materials generated in the optical industry.

Description

technical field [0001] The invention relates to the technical field of conductive polymer material technology and injection molding nozzle material reuse, in particular to a conductive cyclic polyolefin composite material, a preparation method and a coating disc prepared by using the conductive cyclic polyolefin composite material. Background technique [0002] COC series materials belong to cyclic polyolefins, which are widely used in the optical and electronic industry, so a large amount of nozzle materials are produced. At present, due to the brittle characteristics of cyclic polyolefins, they are greatly restricted in recycling and cannot be fully utilized. Utilizing the economic value of these nozzle materials, how to recycle and make full use of these cyclic polyolefin nozzle materials, and improve the reproduction through scientific methods to generate new economic benefits and produce high-quality products is a topic that benefits the country and the people. [0003]...

AI Technical Summary

Problems solved by technology

[0002] COC series materials belong to cyclic polyolefins, which are widely used in the optical and electronic industry, so a large amount of nozzle materials are produced. At present, due to the brittle characteristics of cyclic polyolefins, they are greatly restricted in recycling and cannot be fully utilized. Utilizing the economic value of these nozzle materials, how to recycle and make full use of these cyclic polyolefin nozzle materials, and improve the reproduction through scientific methods to produce new economic benefits and produce high-quality products is a topic that benefits the country and the people.

[0003] At present, PC polycarbonate or PPO polyphenylene ether b products are widely used in the packaging trays of electronic products, but the surface resistance of ordinary plastics is greater than 10 12 More than Ω / □, it does not have conductive properties, and it is easy to generate static electricity during the packaging, transportation and production process of electronic products, which will cause great harm to electronic products

The surface resistivity of ordinary antistatic materials produced at present is mostly in the range of 10 9 -10 12 Between Ω / □, although it has a certain antistatic performance, it can only meet the use scenarios with low electrostatic sensitivity. Sensitivity is increasing, such as large-scale integrated electronic components, optical lens coating TRAY (coated emerald disk), etc., it is necessary to use a surface resistivity that can be stabilized at 10 under low humidity conditions 8 Ω / □ or below, even 10 4 -10 5 Conductive materials between Ω / □, and conductive plastic materials with long-term performance and no pollutant precipitation to meet the development requirements of the electronics industry;

[0004] The coating tray (TRAY) is used as a clamping fixture for vacuum coating of optical and electronic components. In order to pursue high-efficiency and high-quality output, the coating tray is required to have dimensional stability, high heat distortion temperature, low water absorption, and long-term performance. Antistatic performance, while the materials currently used in the market, such as PC and PPM, have a heat distortion temperature of about 100-110°C, a water absorption rate of 0.2-0.3%, and a large internal stress after injection molding, which is easy to cause distortion and affect the flatness of the product. Meet the high-quality, high-efficiency production mode

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