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Composite fiber as well as preparation method and application thereof

A composite fiber and fiber technology, which is applied in the direction of fiber type, fiber treatment, plant fiber, etc., can solve the problems of inability to fully reflect the high adsorption characteristics of graphene, the inability to realize the selective adsorption of target substances, and the inability to meet the use requirements. Reuse, reduced surface shielding effect, high strength effect

Active Publication Date: 2016-05-25
JINAN SHENGQUAN GROUP SHARE HLDG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method indicates that the simple modification of graphene oxide to the fiber surface cannot avoid the self-agglomeration of graphene oxide, so the high adsorption characteristics of graphene cannot be fully reflected
[0004] CN102674315A discloses a graphene-carbon nanotube composite full-carbon ultra-light elastic airgel and a preparation method thereof. The graphene-carbon nanotube composite full-carbon ultra-light elastic airgel belongs to self-supporting airgel, Has the problem of low mechanical strength
In addition, the high temperature of cooking oil in the process of processing and frying food will also produce such carcinogens
However, if the adsorbent prepared based on the principle of porous adsorption is used in such occasions, on the one hand, it can ensure the high efficiency of adsorption, on the other hand, it cannot achieve the selective adsorption of the target substance, and thus cannot meet the requirements of specific occasions.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0094] Preparation example 1 (graphene oxide)

[0095] Graphene oxide

[0096] Adopt publication number to be the method for embodiment 1 in the patent of CN105217621A, specifically:

[0097] (A) React 2g of graphite powder with 3g of potassium dithionate, 3g of phosphorus pentoxide and 12mL of concentrated sulfuric acid in a reactor, stir for 4 hours in a water bath at 80°C until a dark blue solution is formed, cool, Obtain pre-oxidized graphite after suction filtration and drying;

[0098] (B) Get 2g of graphite oxide prepared by step (A) in a three-necked flask, and gradually add 25g of potassium permanganate with 150mL of concentrated sulfuric acid solution under the condition of an ice-water bath, and stir for 2 hours;

[0099] (C) Transfer the three-necked flask of the above step (B) to an oil bath, heat up to 35°C, stir for 2 hours, continue stirring and add a mixed solution of 30wt% hydrogen peroxide and deionized water in a volume ratio of 1:15 Suction filtration, ...

preparation example 2

[0103] Graphene

[0104] The graphene oxide in Preparation Example 1 was heated up to 1300° C. in a tube furnace, protected by an inert gas, and kept for 5 to 10 minutes to obtain reduced graphene oxide.

preparation example 3

[0105] Preparation example 3 (biomass graphene)

[0106] Graphene

[0107] Adopt publication number to be the method for embodiment 10 in the patent of CN104724696A, specifically:

[0108] Collect the straw, clean it, cut it into small pieces, soak it in the ethanol solution, stir at a constant speed of 100r / min for 5 hours; then transfer the solution to a high-speed centrifuge, set the speed at 3000r / min, and centrifuge for 20 minutes , after the end, remove the broken sample layer. Under normal temperature and pressure, put the crushed sample into a cell culture dish with a diameter of 15cm, place it at the air inlet, adjust the flow parameters, set the wind speed to 6m / s, and the air volume to 1400m 3 / h, keep the ventilated state for 12 hours; the temperature of the tube furnace is raised to 1300°C, and the inert gas protection is introduced and kept for 30 minutes; the dried broken sample is placed in the tube furnace, heated for 5 hours, and cooled to room temperature ...

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Abstract

The invention relates to a composite fiber. The composite fiber comprises a fiber carrier, and a graphene aerogel layer covering the outer side of the fiber carrier. According to the composite fiber provided by the invention, the relatively thin graphene aerogel layer covers the surface of the composite fiber, and a self surface shielding effect of existing graphene aerogel is overcome; the adsorption speed and adsorption efficiency of the graphene aerogel of the unit volume are improved; the fiber carrier of the composite fiber provided by the invention provides a bracket for the graphene aerogel and the mechanical strength is enhanced; when the composite fiber is used as an adsorption material, the composite fiber can be in seamless butt joint with an existing cigarette production process directly, and replaces an existing adsorption fiber so that the specific adsorption on benzopyrene polycyclic aromatic hydrocarbon type harmful substances can be realized; and meanwhile, other aromatic substances in smoke are kept so that the flavor and aroma of cigarettes are not influenced.

Description

technical field [0001] The invention belongs to the field of functional fiber preparation, and in particular relates to a composite fiber with adsorption function, its preparation method and application, in particular to a composite fiber coated with graphene airgel, its preparation method and application. Background technique [0002] Graphene is a two-dimensional material with a honeycomb structure composed of a single layer of sp2 hybridized carbon atoms, which has many excellent properties. Since its discovery in 2004, graphene has become a research hotspot in the scientific community. The theoretical specific surface area of ​​graphene is as high as 2600m 2 / g, has good thermal conductivity and mechanical properties. Airgel is a nanoporous solid material with ultra-low density, large pore volume, and high specific surface area. These characteristics are attributed to the three-dimensional network structure formed by the connection of its nanoparticles. Graphene aerog...

Claims

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Application Information

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IPC IPC(8): D06M11/74A24D3/10B01J20/26B01J20/24B01D39/14C02F1/28B01D53/02B01J31/38D06M101/08D06M101/32
CPCB01D39/14B01D53/02B01J20/20A24D3/10D06M11/74C02F1/283C02F1/285C02F1/286C02F1/288B01J20/24B01J20/26B01J31/38B01D2253/102B01D2253/20B01D2253/202B01J2220/4812B01J2220/46B01J2220/4806D06M2101/32D06M2101/08B01J35/23B01J35/58B01J35/39
Inventor 唐一林张金柱张安袁征张小鸽
Owner JINAN SHENGQUAN GROUP SHARE HLDG
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