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

Abstract

The invention provides polyester-based conductive master batch based on a carbon nanotube and graphene compound system and a preparation method of the polyester-based conductive master. Firstly, carbon nanotubes and graphene are uniformly dispersed in a volatile inert solvent and treated by an ultrasonic treatment device for 1 h, the treated dispersion solution and raw materials are stirred in a high-speed stirrer in proportion, the obtained material is mixed with a compatilizer in a certain proportion at the room temperature, melt extrusion is performed through double screws, and the conductive master batch is prepared. The prepared composite has excellent conductivity, is easy to add and can be widely applied to 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 polyester substrate based on a composite system of carbon nanotubes and graphene and a preparation method thereof. Background technique [0002] Polyester materials (such as PC, PET, PBT, TPU, etc.) are a class of excellent engineering plastics, with good impact resistance and processing performance, and high industrial application value, so they are widely used in optical discs, disposable Packaging bottles, textiles and other industries. However, as the scope of application becomes wider and wider, people's requirements are getting higher and higher, and consumers are increasingly asking for antistatic or conductive. The insulation of the material will prevent the electrostatic charge accumulated on the surface of the plastic product from being released, and then form an electrostatic voltage, which is easy to absorb dirt such as dust. Wh...

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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