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Carbon nanotube flexible conductive aerogel having water sensing function and preparation method thereof

A carbon nanotube, flexible and conductive technology, applied in the field of cellulose airgel polymer composite materials and its preparation, can solve the problems of electrical and mechanical properties, consumption of large carbon nanotubes, etc., and achieve simple operation, rich and easy raw materials The effect

Inactive Publication Date: 2017-10-17
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the bulk blending method needs to consume a large amount of carbon nanotubes, especially when preparing highly sensitive sensing materials, because the carbon nanotubes are dispersed inside the polymer, and its electrical and mechanical properties will be greatly affected.

Method used

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  • Carbon nanotube flexible conductive aerogel having water sensing function and preparation method thereof
  • Carbon nanotube flexible conductive aerogel having water sensing function and preparation method thereof
  • Carbon nanotube flexible conductive aerogel having water sensing function and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Disperse the acidified carbon nanotubes into an ethanol solvent, then drop-coat the carbon nanotubes on the glass substrate, and finally obtain a carbon nanotube conductive layer with a mass of 9 mg.

[0027] (3) Heat the dried natural cellulose pulp at 160°C in a mixed solution of potassium permanganate and N,N dimethylacetamide, stir for 1 hour, and then filter with suction to obtain activated natural cellulose .

[0028] (4) heating the mixed solution of natural cellulose activated in step (2), N,N dimethylacetamide and lithium chloride at 100°C, the reaction time is 2 hours, and stirred at room temperature for 24 hours to obtain A cellulose polymer solution with a concentration of 10mg / ml.

[0029] (5) 2.1ml of cellulose polymer solution is uniformly drip-coated on the carbon nanotube conductive layer of step (1), then the surface of the cellulose polymer solution is washed with ethanol solution, and then soaked in an aqueous solution for 24 hours to obtain a p...

Embodiment 2

[0033] (1) The acidified carbon nanotubes were dispersed into an ethanol solvent, and then the carbon nanotubes were drop-coated on the glass substrate, and the mass of the finally obtained carbon nanotube conductive layer was 12 mg.

[0034] (3) Heat the dried natural cellulose pulp at 160°C in a mixed solution of potassium permanganate and N,N dimethylacetamide, stir for 1 hour, and then filter with suction to obtain activated natural cellulose .

[0035] (4) heating the mixed solution of natural cellulose activated in step (2), N,N dimethylacetamide and lithium chloride at 100°C, the reaction time is 2 hours, and stirred at room temperature for 24 hours to obtain A cellulose polymer solution with a concentration of 5 mg / ml.

[0036] (5) 1.8ml of cellulose polymer solution is uniformly drip-coated on the carbon nanotube conductive layer of step (1), then the surface of the cellulose polymer solution is washed with ethanol solution, and then soaked in an aqueous solution for...

Embodiment 3

[0040] (1) The acidified carbon nanotubes were dispersed into ethanol solvent, and then the carbon nanotubes were drop-coated on the glass substrate, and the mass of the finally obtained carbon nanotube conductive layer was 18 mg.

[0041] (3) Heat the dried natural cellulose pulp at 160°C in a mixed solution of potassium permanganate and N,N dimethylacetamide, stir for 1 hour, and then filter with suction to obtain activated natural cellulose .

[0042](4) heating the mixed solution of natural cellulose activated in step (2), N,N dimethylacetamide and lithium chloride at 100°C, the reaction time is 2 hours, and stirred at room temperature for 24 hours to obtain A cellulose polymer solution with a concentration of 5 mg / ml.

[0043] (5) 1.2ml of cellulose polymer solution is uniformly drip-coated on the carbon nanotube conductive layer of step (1), then the surface of the cellulose polymer solution is washed with ethanol solution, and then soaked in an aqueous solution for 24 ...

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Abstract

The invention discloses a carbon nanotube flexible conductive aerogel composite high-molecular material having water sensing function, and more specifically relates to the cellulose aerogel high-molecular composite material having water sensing function and flexible electric conduction. The carbon nanotube and natural cellulose pulp are taken as the raw materials, the carbon nanotube flexible conductive aerogel having the water sensing function is prepared, and the carbon nanotube aerogel has porous and flexible conductivity, and has water sensing effect. The method has simple operation, employs a layered blending preparation technology, the renewable cellulose high-molecular and carbon nanotube surface are composited, and the carbon nanotube flexible conductive aerogel having the water sensing function is obtained.

Description

technical field [0001] The invention relates to a carbon nanotube flexible conductive airgel composite polymer material with water sensing function, in particular to a flexible conductive cellulose airgel polymer composite material with water sensing function and a preparation method thereof. Background technique [0002] After the solvent is removed from the gel, the internal space network structure is filled with gas medium, and the appearance is solid. This is xerogel, also known as aerogel. Aerogel as a mesoporous and microporous structural material. Airgel has low density (density range can be 0.003-0.500g / cm-3), high porosity (porosity can reach 80%-99.8%), high specific surface area (specific surface area up to 200-1500m2 / g), etc. features. Aerogels of carbon materials are widely used in many aspects, such as building materials, high-efficiency heat insulation materials, energy storage devices, aerospace, environmental protection, sensors, etc. [0003] Cellulose i...

Claims

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Application Information

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IPC IPC(8): C08L1/02C08K9/00C08K7/24C08J9/28C08J3/075
CPCC08J3/075C08J9/28C08J2201/0484C08J2205/026C08J2301/02C08K7/24C08K9/00C08K2201/011C08L2203/14C08L1/02
Inventor 王华权罗洪盛周兴东易国斌徐峰曾琳惠张怡杭
Owner GUANGDONG UNIV OF TECH
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