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Preparation method of carboxylated carbon nanotube and PS (polystyrene) composite material

A polystyrene and carboxylated carbon technology, applied in the field of functionalized materials, can solve the problems of limiting the application of carbon nanotubes and being insoluble, and achieve the effects of less investment in reaction equipment, simple operation and superior performance.

Inactive Publication Date: 2017-05-24
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Since carbon nanotubes are extremely prone to agglomeration and are not easily soluble in water and other organic solvents, these factors greatly limit the application of carbon nanotubes.

Method used

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  • Preparation method of carboxylated carbon nanotube and PS (polystyrene) composite material
  • Preparation method of carboxylated carbon nanotube and PS (polystyrene) composite material

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Embodiment 1

[0028] A preparation method of a composite material of carboxylated carbon nanotubes and polystyrene, the method steps are as follows:

[0029] 1) Multi-walled carbon nanotubes with carboxyl content of 0, 0.5, 2, 4, 8wt%, 0.1ml of surfactant Triton X-100, 5ml of tetrahydrofuran, stirred at 60° for 1h, controlled reaction temperature at 60° and sonicated for 1h.

[0030] 2) Dispersion: After adding PS and mechanically stirring to dissolve completely, ultrasonic wave is used for 0.5h until the carbon nanotubes are completely dispersed and evenly distributed.

[0031] 3) Film formation: Pour the mixed solution into a specific container (the diameter of the flange gasket is 5.5cm, and the height is 2mm). After 20 minutes, put the flange gasket into water to form a film, and the sample can be obtained.

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Abstract

The invention relates to a preparation method of a carboxylated carbon nanotube and PS (polystyrene) composite material. The preparation method comprises the following three experiment steps of (1) stirring a certain amount of carboxylated multi-walled carbon nanotube (with carboxyl content of 0-8wt%, length of 0.5 to 2mu m, and purity more than 95wt%), 0.1ml of surfactant triton X-100 and 5ml of tetrahydrofuran for 1h at the temperature of 60 DEG C, controlling the reaction temperature to 60 DEG C, and treating by ultrasonic waves for 1h; (2) adding a certain amount of PS into a mixed solution, mechanically stirring to completely dissolve, treating by ultrasonic waves for 0.5h, and completely and uniformly dispersing the carbon nanotube; (3) pouring the mixed solution into a special container (with flange gasket diameter of 5.5cm and height of 2mm), and putting a flange gasket into water to form a film after 20min, so as to obtain a sample. The preparation method has the advantages that the technology is simple, the experiment cycle is short, the cost is low, and the like; a PS and multi-walled carbon nanotube composite material film with excellent property is prepared.

Description

technical field [0001] The invention relates to a method for preparing a composite material of carboxylated carbon nanotubes and polystyrene, belonging to the technical field of functional materials. Background technique [0002] Carbon nanotubes (CNTs) are seamless nanoscale tubes made of single-layer or multi-layer graphite sheets curled around the central axis at a certain helical angle. The carbon atoms on the surface of carbon nanotubes exist in the form of sp2 hybridization. Both ends of the tube can be considered to be formed by hemispherical fullerene caps. This unique structure makes carbon nanotubes have many excellent properties, such as large aspect ratio and specific surface area, special electrical properties, and excellent mechanical properties. Performance and thermal stability, these special properties make multi-walled carbon nanotubes attract extensive attention as fillers in composite materials. However, due to the large aspect ratio and specific surface...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L25/06C08K9/04C08K7/24C08J5/18
Inventor 李广芬梁绍磊张艳霞田润
Owner TIANJIN POLYTECHNIC UNIV
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