Carbon nanotube master batch and preparation method and application thereof

Abstract

The invention discloses a carbon nanotube master batch which comprises the following components in parts by weight: 50-80 parts of PP resin, 10-40 parts of a filler, 3-10 parts of MWCNT and 0.1-3 parts of auxiliaries, wherein the MWCNT is a multi-walled carbon nanotube, and the filler is at least one of talcum powder, calcium carbonate, barium sulfate and glass fiber. According to the carbon nanotube master batch disclosed by the invention, the MWCNT master batch with high dispersion degree can be prepared under the condition of common double-screw extrusion by controlling all the components and contents, and the problem that the MWCNT structure is easily damaged due to the fact that professional equipment is required to be used for banburying in the traditional master batch preparation issolved. Meanwhile, the invention also discloses a preparation method and application of the carbon nanotube master batch.

Description

technical field [0001] The invention relates to the field of polymer material modification, in particular to a carbon nanotube masterbatch and a preparation method and application thereof. Background technique [0002] As a cost-effective general-purpose plastic, polypropylene (PP) has excellent mechanical properties after toughening and modification, and is easy to form and process. It is widely used in home appliances and automotive products. [0003] In the future automotive automated driving technology, automatic cruise control (ACC), collision avoidance system (CA) and lane change assistance systems will use millimeter-wave radar in large quantities, and with the development of technology, 77GHz millimeter-wave radar will be widely industrialized in the industry and Replacing 24GHz millimeter-wave radar has become the mainstream of automotive millimeter-wave radar applications. In this case, radar anti-jamming is particularly important. [0004] Due to the low density ...

AI Technical Summary

Problems solved by technology

[0004] Due to the low density of multi-walled carbon nanotubes (MWCNT) and the difficulty of dispersing, when used to prepare conductive polypropylene compositions, MWCNT is not easy to disperse and is likely to cause dust pollution in the production process, while currently commercially available MWCNT masterbatches are mostly In order to adopt the method of banburying and high shear for production, professional equipment technology and professional formula design are required at the same time. The degree of freedom of formula design is low and cumbersome, so an efficient, convenient and cost-saving preparation method of MWCNT masterbatch is needed To improve the dispersion of MWCNT in the matrix resin and reduce dust pollution in the production process

At the same time, because polypropylene is more difficult to achieve conductivity than other polar resins, there are relatively few reports on conductive polypropylene products on the market, and conventional solutions to achieve material conductivity will fail in polypropylene systems. Encountered the problems of extremely high dosage, unstable production and fluctuating material conductivity, so this field still needs to develop a simple and feasible method for preparing conductive polypropylene materials, which is also suitable for automotive interior and exterior trims that require electromagnetic shielding

Images