Temperature-sensitive polymer modified carbon nanotube composite material and preparation method thereof

A technology of carbon nanotubes and composite materials, which is applied in the directions of multi-walled carbon nanotubes, carbon compounds, chemical instruments and methods, etc., can solve the problems of limiting application fields and performance, maintain physical properties, and improve solubility and dispersibility. , the effect of strong binding force

Pending Publication Date: 2021-12-07
CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, carbon nanotubes themselves are insoluble in water or organic solvents, and it is difficult to dis

Method used

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  • Temperature-sensitive polymer modified carbon nanotube composite material and preparation method thereof
  • Temperature-sensitive polymer modified carbon nanotube composite material and preparation method thereof
  • Temperature-sensitive polymer modified carbon nanotube composite material and preparation method thereof

Examples

Experimental program
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Embodiment 1

[0029] Embodiment 1, the reaction process of the present embodiment is as figure 1 shown.

[0030] 1. Disperse 1-100mg of multi-walled (layers 2-100) carbon nanotubes (referred to as MWNT-OH) with hydroxyl groups on the surface in 1-50mL of toluene-2,4-diisocyanate (TDI), under nitrogen protection React at 70°C to 90°C for 72 hours, filter the reaction product with a polytetrafluoroethylene membrane (PTFE membrane, 200nm pore size), wash with anhydrous toluene several times to remove residual TDI, and then vacuum at 30°C to 50°C Dry for 24h to obtain TDI-modified multi-walled carbon nanotubes, denoted as MWNT-NCO;

[0031] 2. Add 1 to 100 mg of the MWNT-NCO in a 100 mL round bottom flask, inject 1 to 15 mL of anhydrous toluene with a syringe under nitrogen protection, add 1 to 6 mL of propynyl alcohol (PPL) after ultrasonic dispersion for 30 min, and dissolve at 90 Reflux reaction at ℃~110℃ for 48h. After the reaction, filter with 200nm PTFE membrane, wash with tetrahydrofur...

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Abstract

The invention discloses a temperature-sensitive polymer modified carbon nanotube composite material and a preparation method thereof, and the temperature-sensitive polymer modified carbon nanotube composite material is prepared through a click chemical reaction between alkynyl on the surface of a multi-walled carbon nanotube and azide at the chain end of the block copolymer. According to the material, the solubility and dispersity of the carbon nano tube in a reagent are remarkably improved, meanwhile, the structure and excellent physical properties of the carbon nano tube can be kept, and in addition, a new modified polymer and the carbon nano tube also have strong enough binding force.

Description

technical field [0001] The invention relates to the technical field of new materials, in particular to a carbon nanotube composite material modified by a thermosensitive polymer and a preparation method thereof. Background technique [0002] Since the discovery of carbon nanotubes by Iijima in Japan in 1991, they have aroused the great interest of many scientists due to their unique structure, extremely high mechanical, electrical properties and chemical stability. Carbon nanotubes are composed of C=C double bonds with high bond energy. They are special one-dimensional nanomaterials with large π-π conjugated systems and extremely high aspect ratios. They have many excellent properties, such as heat resistance and corrosion resistance. , thermal shock resistance, excellent heat transfer and electrical conductivity, self-lubrication and biocompatibility, etc. A series of comprehensive physical and chemical properties of carbon nanotubes make them have important application pr...

Claims

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Application Information

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IPC IPC(8): C01B32/174C01B32/168
CPCC01B32/174C01B32/168C01B2202/06
Inventor 陈勇孙陆逸孙培入王松段宏林
Owner CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY
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