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Method for preparing conductive cellulose fibers

A cellulose fiber and cellulose technology, which is applied in the field of preparation of conductive cellulose composite fibers, can solve the problems of complicated processing process and insignificant improvement of fiber conductivity, and achieves the advantages of good solubility, simple and feasible process, and great application prospects. Effect

Inactive Publication Date: 2011-06-22
福建省纤维检验局
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Both of the above two patents involve the modification of nano-carbon materials, the processing process is complicated, and the electrical conductivity of the prepared fibers is not significantly improved.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 1. put nano-carbon black and carbon nanotube into 3.0M nitric acid and heat to reflux for 48 hours according to the mass ratio of 1:10, obtain purified nano-carbon black and nano-carbon nanotube after filtering, cleaning and drying;

[0023] ②Under an infrared lamp with a power of 800w, mix and grind 2g of purified nano-carbon material and 354g of ionic liquid in an agate grinder, the grinding rate is 60r / min, and the grinding time is 2 hours;

[0024] ③ The cellulose cotton pulp with a polymerization degree of 1000 is crushed into particles with a diameter of 2 μm to 5 μm with a food grinder, and these cotton pulp particles are wrapped in cotton bags and placed in a vacuum degree of -10×10 4 Equilibrium drying at Pa and 50°C for 6 hours;

[0025] ④ Take 23g of dried cotton pulp particles and grinded carbon-containing ionic liquid and mix evenly, place in a dissolving device, stir and dissolve under vacuum for 5 hours at 90°C to obtain black carbon / Spinning dope of ce...

Embodiment 2

[0028] 1. put nano-carbon black and carbon nanotube into the sulfuric acid of 95% and heat and reflux for 36 hours according to the mass ratio of 1: 15, obtain purified nano-carbon black and nano-carbon nanotube after filtering, cleaning and drying;

[0029] ②Under an infrared lamp with a power of 1000w, mix and grind 3g of purified nano-carbon material and 255g of ionic liquid in an agate grinder, the grinding rate is 70r / min, and the grinding time is 1.5 hours;

[0030] ③ The cellulose cotton pulp with a polymerization degree of 800 is crushed into particles with a diameter of 2 μm to 5 μm with a food grinder, and these cotton pulp particles are wrapped in cotton bags and placed in a vacuum degree of -10×10 4 Equilibrium drying at Pa and 50°C for 5 hours;

[0031] ④ Take 17g of dried cotton pulp particles and grinded carbon-containing ionic liquid and mix evenly, place in a dissolving device, stir and dissolve in a vacuum at 105°C for 6 hours to obtain black carbon / Spinnin...

Embodiment 3

[0034] 1. put nano-carbon black and carbon nanotubes into aqua regia and heat and reflux for 24 hours according to the mass ratio of 1:18, and obtain purified nano-carbon black and nano-carbon nanotubes after filtering, cleaning and drying;

[0035] ②Under an infrared lamp with a power of 500w, 5g of purified nano-carbon material and 517.5g of ionic liquid were mixed and ground in an agate grinder, the grinding rate was 70r / min, and the grinding time was 4 hours;

[0036] ③The cellulose wood pulp with a polymerization degree of 900 is crushed into particles with a diameter of 2 μm to 5 μm by a food grinder, and these cotton pulp particles are wrapped in a cotton bag and placed in a vacuum degree of -10×10 4Equilibrium drying at Pa and 60°C for 5 hours;

[0037] ④ Take 45g of dried cotton pulp particles and grinded carbon-containing ionic liquid and mix evenly, place in a dissolving device, stir and dissolve under vacuum for 6 hours at 100°C to obtain black carbon / Spinning do...

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Abstract

The invention discloses a method for preparing conductive cellulose fibers, which comprises the following steps of: mixing nano carbon black and carbon nano tube in a certain ration, performing acid washing and purification, and then grinding and dispersing the mixture of carbon and ionic liquid under the condition of an infrared lamp; obtaining nano carbon / cellulose spinning solution containing 8 to 15 weight percent of carbon by using the carbon-containing ionic liquid as a cellulose solvent; and preparing carbon-containing cellulose composite fibers by using a dry-jet wet-spinning or wet-spinning process and using deionized water as a coagulation bath. The method can simply and feasibly realize uniform dispersion of the carbon nano tube and the carbon black in the cellulose fibers, andgreatly improves the electric conductivity of the cellulose fibers; and the obtained carbon-containing cellulose composite fibers can be widely applied in the antistatic field of materials for clothes or industries. The solvent used for the process production is nontoxic and can be repeatedly reclaimed and used, and the whole process realizes green production.

Description

technical field [0001] The invention relates to a method for preparing conductive cellulose composite fibers in the chemical fiber industry. The present invention utilizes the imidazole-type ionic liquid to interact with nano-carbon black and carbon nanotubes during the grinding process to promote the uniform dispersion of nano-carbon materials in the ionic liquid, and overcome the difficulties in post-processing caused by the agglomeration of nano-carbon black and carbon nanotubes , the process is simple and easy. In addition, by utilizing a reasonable ratio between nanocarbon black and carbon nanotubes, a large number of electrified networks can be built in the cellulose matrix, thereby greatly improving the conductivity of the composite fiber. The production of composite fibers adopts conventional dry-jet wet spinning or wet spinning technology, and the obtained cellulose composite fibers have good electrical conductivity and are expected to be widely used in clothing and ...

Claims

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Application Information

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IPC IPC(8): D01F2/00D01F1/10D01D1/02D01D5/00D01D5/06
Inventor 蔡涛卫敏王宜满吴秋兰周爱晖
Owner 福建省纤维检验局
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