Hips-based conductive masterbatch based on carbon nanotube and graphene composite system and preparation method thereof

Abstract

The invention provides a HIPS-based conductive masterbatch based on a compound system of carbon nanotubes and graphene and a preparation method thereof; firstly, the carbon nanotubes and graphene are uniformly dispersed in volatile inert solvents, and are subjected to ultrasonic treatment respectively. The device was treated for 1 hour, and then the treated dispersion liquid was mixed with the raw materials in a high-speed mixer according to the ratio, and then mixed with the compatibilizer at room temperature according to a certain ratio, and then melted and extruded through twin-screws to prepare conductive masterbatch. The composite material prepared by the invention has excellent electrical conductivity, is easy to add, and can be widely used in the fields of injection molding, extrusion, modification and the like.

Description

technical field [0001] The invention belongs to the field of macromolecules, and in particular relates to a conductive masterbatch of a HIPS substrate based on a compound system of carbon nanotubes and graphene and a preparation method thereof. Background technique [0002] HIPS is a widely used plastic raw material. It is widely used in electronic packaging, home appliances, boards, carrier tapes and other fields. It has the characteristics of good processability and beautiful appearance. However, plastics are generally insulated. With the development of society and the advancement of science and technology, the application range of plastics has become wider and wider, and people's requirements have become higher and higher. However, the insulation will cause the electrostatic charge accumulated on the surface of plastic products to be unable to be recovered. Release, and then form a static voltage, which is easy to absorb dust and other dirt. When the static voltage reache...

AI Technical Summary

Problems solved by technology

Conductive additives have inorganic and organic structures: organic conductive agents have excellent compatibility with plastics, but there are also some removal points, such as iodine-doped polyacetylene, after 1000 h exposure in air, its antistatic rate will drop by one order of magnitude, and iodine-doped polyphenylene vinylene basically loses its antistatic properties after being exposed to air for 250 h; inorganic conductive additives are generally dispersed in plastics to form a through / semi-through structure to obtain conductive and antistatic properties. Composite materials have a fatal shortcoming, that is, poor dispersion, especially nanostructured carbon nanotubes and graphene

[0004] As a new type of nanomaterial with the strongest electrical and thermal conductivity found so far, adding a small amount of carbon nanotubes and graphene to the plastic can theoretically make the plastic have good antistatic properties; There is a strong van der Waals force between them, so it is extremely difficult to disperse

How to effectively disperse carbon materials in composite materials has become a hot spot in the research of antistatic and even conductive materials, and there is no effective solution for this in the existing technology

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