Polyamide/nano expanded graphite/carbon fiber high-strength conducting composite material and preparation method thereof

Abstract

The invention relates to a polyamide / nano expanded graphite / carbon fiber high-strength conducting composite material and a preparation method thereof. The composite material contains the following components of 100 parts of main substrate polyarylether, 1-6 parts of expanded graphite of which the expansion ratio is more than 100 times, and 1-20 parts of reinforcer carbon fiber. The reinforcer carbon fiber is added to a polyamide / nano expanded graphite compound system to prepare the high-strength high-conductivity composite material. Although the content of the carbon fiber and the expanded graphite is small, the bulk conductivity of the system can reach 10-2S / m, the mechanical properties of the system are excellent, the tensile strength can reach 120.34 MPa, the bending strength reaches 195.51 MPa, and the impact strength is 37.33 KJ / m<2>. The invention has excellent over-all properties, thereby having broad industrialization prospects. The invention is expected to be widely used in the fields of anti-static materials, electromagnetic shielding materials, microwave absorption and the like.

Description

technical field

[0001] The invention relates to a preparation process and related performance research of a polyamide / nano-expanded graphite / carbon fiber high-strength conductive composite material. On the basis of the preparation method of the polyamide / graphite nano-conductive composite material, carbon fibers are added through simple melt blending and intercalation A polyamide / nano-expanded graphite / carbon fiber high-strength conductive composite material with good electrical conductivity and excellent mechanical properties was prepared by the method. Background technique

[0002] In recent years, polymer-based conductive composites have been widely promoted and applied due to their advantages such as low density, excellent electrical conductivity, and good chemical corrosion resistance. However, according to current reports, the conductive composite materials with polymer as the matrix mostly use carbon black, metal powder, metal oxide, etc. as conductive fillers, and ad...

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