Preparation method of carbon nano tube composite material

Abstract

The invention provides a preparation method of a carbon nano tube composite material. According to the preparation method, carbon nano tube film is added into a mixed solution composed of a raising agent, a compatilizer, and a resin matrix, and an obtained mixture is allowed to stand; when the raising agent in the mixed solution penetrate into the carbon nano tube film, microbubbles are generatedvia deposition, microburst effect is achieved, the structure of the carbon nano tube film becomes loosened gradually, entering of the resin matrix molecules or nanoparticles into the loosened carbon nano tube film is realized, and a primary carbon nano tube composite material is formed; the primary carbon nano tube composite material is subjected to heating and hot pressing ,tightening and solidification of the structure of the primary carbon nano tube composite material are realized under the effect of core suction force and pressure generated in the evaporation process of the mixed solution,and the carbon nano tube composite material is obtained, wherein full infiltration of the carbon nano tube composite material with polymers is realized. The carbon nano tube composite material is prepared from carbon nano tube and large molecular resin, the comprehensive performance of the carbon nano tube composite material is improved; the preparation method is simple and convenient; cost is low; and industrialized production can be realized.

Description

technical field [0001] The invention relates to a method for preparing a carbon nanotube composite material uniformly immersed in a polymer. Background technique [0002] Carbon nanotubes are one-dimensional quantum materials with a special carbon six-membered ring structure. The radial dimension is on the order of nanometers, and the axial dimension is on the order of micrometers. It has excellent mechanical, electrical and thermal properties. With the development of nanotechnology, carbon nanotubes can be directly prepared into large-scale film structures by chemical vapor deposition and other means. Carbon nanotube film inherits the excellent properties of carbon nanotubes, and is very suitable as a reinforcement of composite materials to prepare high-performance multifunctional composite materials. It is expected to overcome the defects of low content of carbon nanotubes, agglomeration of solution, and poor performance of the prepared composite material prepared by blen...

AI Technical Summary

Problems solved by technology

It is expected to overcome the defects of low carbon nanotube content, solution agglomeration and poor performance of the prepared composite material prepared by blending carbon nanotube powder and resin

[0003] However, due to the small size of the voids in the carbon nanotube aggregates and the absence of active functional groups on the surface, macromolecular resins can hardly enter the interior, which greatly limits the preparation and application of carbon nanotube aggregate composites.

For example, the resin used in the manufacturing method of carbon nanotube composite materials described in patent CN101462391 A and patent CN 104371129 A is exactly a thermosetting small molecule epoxy resin, but cannot be immersed in a macromolecular resin, which limits the carbon nanotube composite material. material development