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Three-dimensional nanostructured fiber material and preparation method thereof

A structural fiber and three-dimensional nanotechnology, which is applied in fiber treatment, plant fiber, fiber chemical characteristics, etc., can solve the problems of performance degradation, adsorption performance decline, and limited performance. Flexible and convenient effects

Active Publication Date: 2014-02-05
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Gamma aluminum oxyhydroxide (γ-A100H), aluminum hydroxide and aluminum oxide are often used as adsorbents, catalyst supports and desiccants when the scale is on the nanoscale; however, when gamma aluminum oxyhydroxide, hydroxide When aluminum and alumina are nano-powders, the adsorption performance is seriously reduced because of their easy agglomeration, which leads to performance degradation and greatly limits the effective performance of performance.

Method used

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  • Three-dimensional nanostructured fiber material and preparation method thereof
  • Three-dimensional nanostructured fiber material and preparation method thereof
  • Three-dimensional nanostructured fiber material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0024] The concrete steps of preparation are:

[0025] Step 1, first mix the metal aluminum and the polymer fiber according to the mass ratio of 1:1 and then immerse in the alkaline solution with a concentration of 0.01wt% to obtain a mixed solution; wherein the polymer fiber is polyacrylonitrile fiber , the alkaline solution is hexamethylenetetramine solution. Then the mixed solution was placed in a closed state, and kept at a temperature of 80° C. for 96 hours to obtain an intermediate product.

[0026] In step 2, excess aluminum in the intermediate product is washed first; wherein, the washing liquid is water. It was then dried to produce approximately figure 1 shown, and as figure 2 The 3D nanostructured fiber material shown in curve b.

Embodiment 2

[0028] The concrete steps of preparation are:

[0029] Step 1, first mix metal aluminum and polymer fiber according to the mass ratio of 1:2500 and then immerse in an alkaline solution with a concentration of 0.1wt% to obtain a mixed solution; wherein the polymer fiber is polyacrylonitrile fiber , the alkaline solution is hexamethylenetetramine solution. Then the mixed solution was placed in a closed state and kept at a temperature of 105° C. for 72 hours to obtain an intermediate product.

[0030] In step 2, excess aluminum in the intermediate product is washed first; wherein, the washing liquid is water. It was then dried to produce approximately figure 1 shown, and as figure 2 The 3D nanostructured fiber material shown in curve b.

Embodiment 3

[0032] The concrete steps of preparation are:

[0033] Step 1, first mix the metal aluminum and the polymer fiber according to the mass ratio of 1:5000 and then immerse in an alkaline solution with a concentration of 1wt%, to obtain a mixed solution; wherein the polymer fiber is polyacrylonitrile fiber, Alkaline solution is hexamethylenetetramine solution. Then the mixed solution was placed in a closed state and kept at a temperature of 130° C. for 50 h to obtain an intermediate product.

[0034] In step 2, excess aluminum in the intermediate product is washed first; wherein, the washing liquid is water. It is then dried to obtain figure 1 shown, and as figure 2 The 3D nanostructured fiber material shown in curve b.

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Abstract

The invention discloses a three-dimensional nanostructured fiber material and a preparation method thereof. The material is characterized in that a standing nanosheet is compounded on the surface of polymer fiber, wherein the sheet thickness of the nanosheet is 5-80nm, the sheet width is 20-300 nm, the sheet height is 5-500nm, and the nanosheet comprises gamma hydroxy alumina or aluminium hydroxide or their mixture; the polymer fiber has the diameter of 10nm-10mum and the length of no less than 100nm, and comprises a mixture of one or more than two of cellulose acetate, cellulose diacetate, polyacrylonitrile, polyamide, polymethyl butyral. The preparation method comprises the following steps: firstly mixing aluminium with the polymer fiber according to a mass ratio of 1:1-10000, then immersing in an alkaline solution with the concentration of 0.01-60wt% to obtain a mixed solution, leaving the mixed solution in a closed state, and preserving the heat for 6-96h at 80-180 DEG C to obtain an intermediate product, then removing excessive aluminium in the intermediate product by washing, and then drying to obtain the three-dimensional nanostructured fiber material. The three-dimensional nanostructured fiber material can be widely used as a carrier of adsorbents and catalysts.

Description

technical field [0001] The invention relates to a fiber material and a preparation method, in particular to a three-dimensional nanostructure fiber material and a preparation method thereof. Background technique [0002] Nanostructure usually refers to the ultramicrostructure of 0.1-100nm, which is based on the nano-scale material unit and builds or creates a new system according to certain rules, including one-dimensional, two-dimensional and three-dimensional systems. These units of matter include nanoparticles, stable clusters or artificial superatoms, nanotubes, nanorods, nanowires, and nanometer-sized holes. Gamma aluminum oxyhydroxide (γ-A100H), aluminum hydroxide and aluminum oxide are often used as adsorbents, catalyst supports and desiccants when the scale is on the nanoscale; however, when gamma aluminum oxyhydroxide, hydroxide When aluminum and alumina are nano-powders, their adsorption performance is seriously reduced because of their easy agglomeration, which l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M11/45D01F11/12D01F11/00D06M101/08D06M101/28D06M101/34
Inventor 林永兴蔡伟平何辉田兴友
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI