Styrene polymer-based conductive masterbatch based on carbon nanotube and graphene compound system and preparation method thereof

Abstract

The invention provides a styrene polymer-based conductive masterbatch based on a compound system of carbon nanotubes and graphene and a preparation method thereof; firstly, carbon nanotubes and graphene are uniformly dispersed in volatile inert solvents, respectively After being treated with an ultrasonic treatment device for 1 hour, the processed dispersion liquid is stirred with the raw materials in a high-speed mixer according to the ratio, and then mixed with a compatibilizer at room temperature according to a certain ratio, and then melted and extruded through a twin-screw to prepare a 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 polymers, and in particular relates to a styrene polymer-based conductive masterbatch based on a composite system of carbon nanotubes and graphene and a preparation method thereof. Background technique [0002] ABS resin is a resin with excellent performance. It has excellent impact resistance, heat resistance, dimensional stability and excellent dyeing properties. It has been widely used in electronic and electrical, home appliances, automobiles and other fields. It is suitable for various processing technology. However, plastics are generally insulating. With the development of society and the advancement of science and technology, the application of plastics has become wider and wider, and people's requirements have become higher and higher. When the electrostatic voltage reaches a certain level, electrostatic discharge (ESD) and electric shock will occur. Especially in the electronics industry, various precis...

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Problems solved by technology

Organic conductive agents have excellent compatibility with plastics, but there are also some disadvantages. For example, the antistatic rate of iodine-doped polyacetylene will drop by an order of magnitude after being exposed to air for 1000 h, while iodine-doped polyphenylene vinylene After 250 h exposure in the air, it basically loses its antistatic properties

Inorganic conductive additives are generally conductive and antistatic composite materials obtained by dispersing in plastics, and have been widely used in communication terminals, computers, car phones, cash registers and other equipment; but there is a fatal flaw, that is, dispersion Poor properties, especially nanostructured carbon nanotubes and graphene

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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