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Modified graphene oxide regenerated cellulose composite fiber and preparation method thereof

A technology of regenerated cellulose and composite fibers, applied in the direction of artificial filaments made of viscose, can solve the problems of large graphene particles, clogged spinning holes, spinning difficulties, etc., and achieve low cost, simple process and easy operation , Excellent antibacterial properties

Active Publication Date: 2020-11-17
NANTONG QIANGSHENG GRAPHENE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this method adopts alkali, acid, water to wash graphene in the process of preparing graphene, may produce extra waste liquid, and after dispersing in the preparation graphene aqueous solution process, if dispersion is not sufficient, will make graphene particle too big, produce Re-agglomeration, resulting in difficulty in spinning, clogging of spinning holes, etc.

Method used

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  • Modified graphene oxide regenerated cellulose composite fiber and preparation method thereof

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Comparison scheme
Effect test

Embodiment 1

[0035] The present embodiment provides a kind of preparation method of modified graphene oxide, comprises the following steps:

[0036] In step 1, the modified graphene oxide is prepared by the Hummers method.

[0037] Add 200mL 98% concentrated H2SO4 to the 1000 reaction flask; Weigh 5g graphite powder and 2g NaNO3 solids respectively, add them to the reaction flask, turn on the stirrer and stir for 30min; add KMnO4 15g after the stirring, control the reaction temperature If the temperature is higher than 25°C, stir for 15 minutes; raise the temperature of the water bath to 30-40°C, and continue stirring for about 1 hour; after stirring, raise the temperature of the water bath to 90°C, and drop 300ml of deionized water into the solution; at the same time, measure 100mL of 30% H2O2 was added to the solution, and the solution turned from brown-black to bright yellow. Continue to stir for 10 minutes, pour the solution into a beaker, and ultrasonicate for 30 minutes; finally fil...

Embodiment 2

[0040] This embodiment provides a kind of preparation method of modified graphene oxide regenerated cellulose composite fiber, and specific operation steps are as follows:

[0041] Step 1: Dissolve the modified graphene oxide powder prepared in Example 1 in deionized water, configure an aqueous solution with a concentration of 1 mg / ml, and add a modifier and an alkaline reagent at a ratio of 1%, and adjust the solution to neutral or slightly alkaline. Then it is ultrasonicated for 30min to 60min to make it uniformly dispersed; then the solution is treated with microcapsule technology, and the obtained microcapsule particles have a particle size of less than 3 μm.

[0042]Step 2: Preparation of regenerated cellulose pulp treatment solution: Weigh 500g of regenerated cellulose pulp, mix it with 20%-40% sodium hydroxide solution with a mass fraction of 20%-40% according to the mass ratio 1:(2-4), and stir it with a mixer for 60min. Make it completely mixed; put it into the press...

Embodiment 3

[0045] This embodiment provides a method for preparing a modified graphene oxide regenerated cellulose composite fiber. The specific operation steps are basically the same as in Example 2, except that in step 1, an aqueous solution with a concentration of 5 mg / ml is configured; In step 3, the mass percentages of the modified graphene oxide solution and the regenerated cellulose pulp treatment liquid are 5% and 95% respectively, wherein the solid content of the modified graphene oxide is the same as that in the regenerated cellulose pulp treatment liquid The ratio of cellulose solid content is 2%:1.

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Abstract

A modified graphene oxide regenerated cellulose composite fiber and a preparation method therefor. The regenerated cellulose composite fiber comprises: 85-99% of regenerated cellulose pulp treatment fluid and 0.1-15% of a modified graphene oxide solution, and the ratio of solid content of cellulose in the regenerated cellulose pulp treatment fluid to solid content of modified graphene oxide in the modified graphene oxide solution is 100:0.01-5. The modified graphene oxide solution is prepared, the microcapsule technology is adopted for treating the modified graphene oxide solution, the dispersity of modified graphene oxide is improved, and finally regenerated cellulose spinning technology is adopted for preparation. The modified graphene oxide regenerated cellulose composite fiber guarantees the anti-microbial, anti-mite, far-infrared, anti-ultraviolet and other excellent performance of modified graphene oxide on the basis of the original performance of regenerated cellulose fiber; the product is functionally washable, safe and environmentally friendly, individual post-treatment technology is not needed, and the current requirements on functional, comfortable, and healthy textiles for people can be better satisfied.

Description

technical field [0001] The invention belongs to the technical field of regenerated cellulose materials, and relates to a modified graphene oxide regenerated cellulose composite fiber and a preparation method thereof. Background technique [0002] Regenerated cellulose fiber is a cellulose fiber with a wide range of uses. It has good mechanical properties and hygroscopicity, but it does not have functionality. The traditional functional regenerated cellulose fiber is mainly achieved by adding additives to the regenerated cellulose fiber or by modifying the fiber. However, the regenerated cellulose fiber prepared by this method is not functionally washable, and post-treatment causes The pollution of regenerated cellulose fiber is relatively serious, so the application of regenerated cellulose fiber is limited. [0003] Graphene is a two-dimensional material with carbon atoms arranged in hexagons. Graphene oxide is modified with carboxyl, epoxy, hydroxyl and other oxygen-conta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F2/08
CPCD01F2/08
Inventor 沙嫣沙晓林
Owner NANTONG QIANGSHENG GRAPHENE TECH CO LTD