Method for preparing magnetic compound material of ferric oxide cladded carbon nanotube

A technology of magnetic composite material and ferric oxide, applied in the direction of metal material coating process, etc., can solve the problems of complex method, unexplored magnetic properties of composite materials, long reaction time, etc.
CN1670251AInactive Publication Date: 2005-09-21DONGHUA UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
DONGHUA UNIV
Publication Date
2005-09-21
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method for preparing magnetic composite material of a carbon nanometer tube covered with di-iron trioxide. The invention makes the carbon nanometer tube reflux in the nitric acid, to introduce several function groups such as carboxyl group, hydroxyl group and carbonyl group in the tube wall, which can adsorb iron ions in the solution. Then the iron ions adsorbed in the tube wall react with the hydroxide ion in the ammonial solution, which coated the hydroxide ion on the tube, and the tube can be coated with di-iron trioxide by calcining. The invention provides a simple way to get composite material, good performance soft magnetic material, which is facilitating to industrial production, and may be used in the areas of high-density magnetic recording material, wave-absorbing material, ink for electrophotographic copying, broad-cellulae transformer, noise filter, voltage transformer for communicating and so an.
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Description

technical field

[0001] The invention relates to a preparation method of a magnetic composite material, in particular to a preparation method of a novel magnetic composite material coated with ferric oxide and carbon nanotubes. Background technique

[0002] Magnetic composite materials are widely used in the preparation of high-density magnetic recording materials for data storage, as well as in the preparation of wave-absorbing materials, inks for electrostatic printing, broadband transformers, noise filters, and communication transformers.

[0003] Carbon nanotubes have many novel properties, which have attracted great attention from scientists. Studies have shown that the coated carbon nanotube composites exhibit more excellent physical and chemical properties, such as better electrical conductivity, mechanical properties, optical properties, adsorption properties and wave absorption properties, etc., and have broader application prospects .

[0004] At present, the main...

Claims

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