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A kind of organic phosphine modified carbon nanotube and preparation method thereof

A technology of carbon nanotubes and modified carbon, which is applied in the field of nanomaterials, can solve the problems of poor compatibility with polymers, achieve the effects of improving flame retardancy, broad market application prospects, and reducing agglomeration effects

Active Publication Date: 2017-10-27
HEFEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved in the present invention is to overcome defects such as poor compatibility with polymers existing in the existing carbon nanotube modification technology, and provide a method that can reduce the agglomeration effect of carbon nanotubes, improve its interface compatibility with polymers, Organophosphine-modified carbon nanotubes endowed with flame-retardant function

Method used

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  • A kind of organic phosphine modified carbon nanotube and preparation method thereof
  • A kind of organic phosphine modified carbon nanotube and preparation method thereof
  • A kind of organic phosphine modified carbon nanotube and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Place 0.2 g of aminated multi-walled carbon nanotubes, 1.4 g of triethylamine and 50 ml of N,N-dimethylformamide in a three-necked flask, and add 3.0 g of diphenyl Phosphinoyl chloride, after the dropwise addition, continue to react for 2 hours under ice bath and nitrogen conditions, then raise the temperature to 80°C, and react under nitrogen conditions for 24 hours, and finally filter, wash and dry the obtained product to obtain a black solid that is organic Phosphine modified carbon nanotubes.

[0033] from figure 1 It can be clearly seen that the organophosphine-modified carbon nanotubes prepared by the present invention have better dispersibility in organic solvents.

[0034] from figure 2 It can be seen from the spectrum that the most significant difference between the two is that the organic phosphine modified carbon nanotube (DPPA-MWCNT) is at 1077cm -1 A strong and broad absorption peak appeared at , which corresponds to the stretching vibration absorption ...

Embodiment 2

[0037] 0.2 g of aminated single-walled carbon nanotubes, 0.7 g of pyridine and 50 ml of tetrahydrofuran were placed in a three-necked flask, and 2.0 g of diphenylphosphinic chloride was added dropwise under ice bath and nitrogen conditions. Bath and nitrogen conditions continue to react for 1 hour, then heat up to 70 ° C, react under nitrogen conditions for 12 hours, and finally filter, wash, and dry the resulting product to obtain a black solid that is approximately figure 1 photo, figure 2 and 3 Organophosphine-modified carbon nanotubes shown in the curve.

Embodiment 3

[0039] Place 0.2 g of aminated single-walled carbon nanotubes, 1.4 g of pyridine, and 50 ml of N,N-dimethylformamide into a three-necked flask, and add 4.0 g of diphenylphosphine dropwise under ice bath and nitrogen conditions Acyl chloride, after the dropwise addition, continue to react in ice bath and nitrogen for 3 hours, then raise the temperature to 90°C, react in nitrogen for 36 hours, and finally filter, wash and dry the resulting product to obtain a black solid that is approximately figure 1 photo, figure 2 and 3 Organophosphine-modified carbon nanotubes shown in the curve.

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Abstract

The invention belongs to the technical field of nanometer materials, and in particular relates to an organic phosphine modified carbon nanotube and a preparation method thereof. The molecular structural formula of the organic phosphine modified carbon nanotube is: in the formula, R is ethyl or phenyl. First place carbon nanotubes in an organic solvent, add an acid-binding agent, add phosphinyl chloride dropwise under ice bath and nitrogen conditions, react under ice bath and nitrogen conditions after the dropwise addition, then heat up, continue the reaction, Finally, the obtained product is filtered, washed and dried. The organic phosphine modified carbon nanotube of the invention can reduce the agglomeration effect of the carbon nanotube and improve the dispersibility of the carbon nanotube in an organic solvent. At the same time, the use of the organic phosphine-modified carbon nanotube-modified polymer material of the present invention can improve the interfacial compatibility between the carbon nanotube and the polymer material, improve the dispersion of the carbon nanotube in the polymer matrix, thereby enhancing the composite The mechanical properties of the material.

Description

technical field [0001] The invention belongs to the technical field of nanometer materials, and in particular relates to an organic phosphine modified carbon nanotube and a preparation method thereof. Background technique [0002] Carbon nanotubes are one-dimensional nanomaterials with a special structure (the radial dimension is on the order of nanometers, the axial dimension is on the order of microns, and both ends of the tube are basically sealed). Carbon nanotubes have excellent mechanical properties, and their tensile strength reaches 50-200GPa, which is 100 times that of steel, but the density is only 1 / 6 of steel; its elastic modulus can reach 1TPa, which is equivalent to that of diamond. About 5 times that of steel. Carbon nanotubes are currently the nanomaterials with the highest specific strength that can be prepared. If the polymer material is used as a matrix to make a composite material with carbon nanotubes, the composite material can exhibit good strength, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/02C08L51/00C08L51/06C08K9/04C08K7/24C08K13/04
Inventor 杨伟胡琪杭鲁红典杨本宏
Owner HEFEI UNIV
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