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

Abstract

The invention provides styrene polymer-based conductive masterbatch based on a carbon nanotube and graphene compounded system and a preparation method thereof. The preparation method comprises the following steps: firstly, uniformly dispersing carbon nanotubes and graphene in a volatile inert solvent respectively, treating for 1 hour by using an ultrasonic treatment device respectively, then stirring treated dispersions and a raw material in a high-speed stirrer according to a ratio, then mixing with a compatilizer according to a certain ratio at room temperature, and then performing melt extrusion by using a twin-screw extruder to obtain the conductive masterbatch. The composite material prepared by the preparation method provided by the invention has excellent electrical conductivity, iseasy to add, and can be widely applied to the fields of injection moulding, extrusion, modification and the like.

Description

technical field [0001] The invention belongs to the field of macromolecules, 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, which has excellent impact resistance, heat resistance, dimensional stability and excellent dyeing performance. It has been widely used in the fields of electronics, home appliances, automobiles, etc. processing technology. 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 a...

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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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