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Grapheme-containing viscose fiber and preparation method thereof

A viscose fiber and graphene technology, applied in the field of graphene viscose fiber and its preparation process, can solve the problems of short service life, wrinkling, high shrinkage rate of viscose fiber, etc., and achieve the effect of improving the breaking strength

Active Publication Date: 2015-02-04
JINAN SHENGQUAN GROUP SHARE HLDG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as a textile fiber, it also has many defects: the strength of viscose fiber is low, especially the wet strength, which is usually only about one-half of the dry strength; the fabric made of viscose fiber cannot be scrubbed strongly when washing, and the service life is short The shrinkage rate of viscose fiber is high, and the appearance of the fabric after washing is not ideal; the elasticity of viscose fiber is poor, and it is easy to deform when worn, causing wrinkles, which affects the appearance of the fabric
[0004] In addition, there are many Chinese patent documents disclosing the application of graphene in fiber products to solve the problem of insufficient strength, but these disclosures all involve the application of graphene oxide

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0016] A specific preparation method is disclosed, the disclosure of which is incorporated herein by reference.

[0017] In a specific embodiment, specifically, the preparation method of this graphene comprises the steps:

[0018] 1), hydrolyzing corncobs in acid to obtain lignocellulose;

[0019] 2) Treat the lignocellulose with a treating agent at 70°C to 180°C, preferably 90°C to 150°C, and most preferably 100°C to 120°C to obtain porous cellulose. Sulfate, or alkali-sulfite, wherein the acid is preferably sulfuric acid, the base is preferably calcium hydroxide, sodium hydroxide, ammonium hydroxide or magnesium hydroxide, and the sulfite is preferably calcium sulfite, magnesium sulfite, sodium sulfite or ammonium sulfite;

[0020] 3) using ferric chloride, ferrous chloride, ferric nitrate, ferrous nitrate, ferric sulfate, ferrous sulfate, potassium ferricyanide, potassium ferrocyanide, potassium ferrite trioxalate, cobalt chloride, Catalysts of cobalt nitrate, cobalt sul...

Embodiment 1

[0030] Embodiment 1——graphene preparation

[0031] At 90°C, hydrolyze corncobs in sulfuric acid for 10 minutes to obtain lignocellulose, the mass of sulfuric acid is 3% of the mass of corncobs; at 70-180°C, mix with 2:1 sulfuric acid and magnesium sulfite The treating agent treats the lignocellulose to obtain porous cellulose, and the mass of sulfuric acid is 4% of the mass of the lignocellulose. The porous cellulose is bleached with hydrogen peroxide, the mass of the hydrogen peroxide is 5% of the mass of the porous cellulose, the bleaching temperature of the hydrogen peroxide bleaching is 100° C., and the bleaching time is 5 hours.

[0032] Stir the porous cellulose and manganese chloride obtained above at 20°C for 2 hours for catalytic treatment, the mass ratio of manganese chloride and porous cellulose is 0.01:1; drying to obtain a first intermediate product with a water content lower than 10 wt%.

[0033] Put the first intermediate product in the carbonization furnace, ...

Embodiment 2

[0036] Embodiment 2——viscose fiber preparation

[0037] The yellowed cellulose was dissolved in dilute sodium hydroxide solution, and the graphene obtained in Example 1 was added in advance to the dilute sodium hydroxide solution. After ripening, a viscose solution with a solid content of 8% was prepared, stirred with a high-speed mixer for half an hour, and the graphene consumption was 0.6% of the cellulose mass. Filtration, defoaming, and then spinning, desulfurization, washing, and drying to obtain graphene viscose fibers. Wherein, the composition of coagulation bath: sulfuric acid 105g / l, sodium sulfate 200g / l, zinc sulfate 12g / l. The dry breaking strength of the obtained graphene viscose fiber is 8.5cN / dtex, and the wet breaking strength is 2.3cN / dtex.

[0038] The present invention uses the applicant's self-made graphene for the preparation of viscose fiber, which obviously improves the breaking strength of the existing common viscose fiber, and both the dry breaking s...

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Abstract

The invention relates to a graphene-containing viscose fiber and a preparation method thereof. Graphene is non-oxidized graphene with a layer number not more than 10. The preparation method comprises the step of introducing the graphene into viscose before spinning. The viscose fiber obtained through the preparation method disclosed by the invention outstandingly enhances the fracture strength.

Description

technical field [0001] The invention relates to a viscose fiber and a preparation process thereof, in particular to a graphene viscose fiber and a preparation process thereof. Background technique [0002] Viscose fiber is mainly made of natural cellulose such as cotton linters, wood and a small amount of bamboo. After a series of processing processes such as cooking and bleaching, it is made into dissolving pulp with high purity of cellulose, and then soaked and pressed. , crushing, aging, yellowing, dissolving, mixing, filtering, defoaming, filtering, spinning, post-processing, drying, packaging and other processes. At present, it is mostly used as textile fiber. Ordinary viscose fiber has excellent wearing performance, which is very similar to some properties of natural cotton fiber. It has good hygroscopicity, dyeability, antistatic, comfortable to wear, and has advantages that other chemical fibers cannot match. However, as a textile fiber, it also has many defects: th...

Claims

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Application Information

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IPC IPC(8): D01F2/08C01B31/04
CPCC01B32/184C01B32/194C08B9/00D01F2/08
Inventor 唐一林江成真高绍丰田文智孙智华许日鹏
Owner JINAN SHENGQUAN GROUP SHARE HLDG
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