Method for preparing functional carbon nano-tube and application thereof

Abstract

The invention provides carbon nano tubes modified by polymers with maleic anhydride chain segments and a preparation method of the carbon nano tubes. The carbon nano tubes are processed in one-step acidification treatment with concentrated sulfuric acid and concentrated nitric acid, and then have reaction with thionyl chloride after being processed in two-step acidification treatment with concentrated sulfuric acid and hydrogen peroxide. The product obtained from the above process has reaction with dihydric alcohol to obtain the modified carbon nano tubes with hydroxyl. Then the carbon nano tubes modified by polymers with maleic anhydride chain segments are obtained by means of the polymerization reaction between the hydroxyl and the polymers with maleic anhydride chain segments. Thereby,the carbon nano tubes can disperse into the composite materials well, the compatibility of the carbon nano tubes with the other materials are improved, so that the carbon nano tubes can take the advantages maximally and realize the functional design and application.

Description

A kind of preparation method and application of functionalized carbon nanotube technical field The invention belongs to the field of materials and relates to carbon nanotubes, in particular to a method for chemically modifying the surface of carbon nanotubes. Background technique Since Iijima discovered carbon nanotubes in 1991, carbon nanotubes have become a research hotspot in recent years because of their unique structure, good electrical properties and mechanical properties. Carbon nanotubes have a nanoscale diameter, a micron-scale length, an aspect ratio of 100-1000, extremely high strength, and an ideal elastic modulus. It is an excellent fiber material, and its performance is better than any current fiber. Therefore, it can be used as a reinforcement for advanced composite materials as a superfiber; because carbon nanotubes combine the semi-metallic properties of graphite with the quantum laws of energy levels and electronic waves, and have a nanoscale scale, it is...

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Problems solved by technology

However, the functionalized carbon nanotubes prepared by reacting polymers with maleic anhydride segments with carbon nanotubes have not been reported yet.