Conductive / heat insulating composite material

Abstract

The invention belongs to the technical field of composite materials, relates to the technical field of fiber-reinforced resin based composite materials, and in particular relates to a composite material with conductive and heat-insulating functions. The conductive / heat-insulating composite material has volume resistivity which is not more than 10 ohm.cm, consists of thermosetting phenolic resin, carbon nanotubes, hollow fibers and surfactant, and is obtained after dispersion of the nanotubes, preparation of a glue solution, preimpregnation of the fibers and curing forming. The conductive / heat-insulating composite material has the advantages of low density, corrosion resistance, superior electrical conductivity, low thermal conductivity and so on, and is a functional material with superiorcomprehensive performance. The functional material not only can meet the use requirements of civilian goods but also can meet the requirements of weapon systems in the national defense fields of weapons, aviation, spaceflight, etc. on the service performance of the material in the severe work environment of high temperature, high overload and so on.

Description

1. Technical field [0001] The invention belongs to the technical field of composite materials, relates to the technical field of fiber-reinforced resin-based composite materials, and particularly relates to composite materials with conductive and heat-insulating functions. 2. Background technology [0002] Composite materials are widely used for their high specific rigidity and strength, and composite materials with conductive or electromagnetic shielding performance have also been developed and successfully applied in recent years. In general, conduction and heat insulation are a pair of contradictions. Materials have good electrical conductivity and good thermal conductivity at the same time. The improvement of material conductivity is often accompanied by the decrease of heat insulation performance. Conductive composite materials mainly include conductive micropowder filling There are two types of resin-based composite materials and fiber-reinforced conductive resin-based...

AI Technical Summary

Problems solved by technology

[0004] CN200510062318.3 introduces a preparation method of carbon nanotube / polystyrene nanoconductive composite material, using polystyrene and multi-walled carbon nanotubes as composite matrix, cholate as dispersion medium, and organic solvent as dispersant , the carbon nanotube / polystyrene nanoconductive composite material was prepared by the solution method, and the volume resistivity reached 10 1 Ω.cm, based on the characteristics of polystyrene itself, the heat resistance is poor, and the thermal performance is not introduced

[0005] In order to improve the thermal insulation performance of the material, a large amount of thermal insulation fillers, such as hollow microspheres, etc. are generally added to the material. Performance can also have a significant impact