Preparation method of multi-stage pore-size distribution material

A technology of pore size distribution and chemical molecules, applied in the direction of single-component polyester artificial filaments, fiber chemical characteristics, fiber types, etc., can solve the problems of material limitations, complex synthesis steps of porous materials, etc., and achieve simple preparation methods and improved fluidity. Through performance, the effect of high surface energy

Active Publication Date: 2016-07-06
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the above problems, the purpose of the present invention is to solve the technical problems of complex synthesis steps and limited materials in existing porous materials.

Method used

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  • Preparation method of multi-stage pore-size distribution material
  • Preparation method of multi-stage pore-size distribution material

Examples

Experimental program
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Effect test

Embodiment 1

[0028] A method for preparing a multi-level pore size distribution material, specifically:

[0029] (1) Preparation of coarse functionalized fibers and fine functionalized fibers:

[0030] 1) Preparation of fine functionalized fibers: the fine functionalized fibers in this example are chitosan nanofibers, and the preparation process is to dissolve chitosan in a mixed solvent of hexafluoroisopropanol and acetic acid to obtain a mass concentration of 7% spinning solution, the spinning solution is prepared by electrospinning to obtain chitosan nanofibers with a diameter of 300nm; the mixed solvent of hexafluoroisopropanol and acetic acid is to mix hexafluoroisopropanol with Acetic acid is prepared by mixing according to a mass ratio of 3:2; the preparation conditions of the electrospinning method are: a voltage of 15kV, a control receiving distance of 15cm; fine functionalized fibers with a diameter of 150nm-750nm, with polymer fibers toughness;

[0031] 2) Preparation of coars...

Embodiment 2

[0035] A method for preparing a multi-level pore size distribution material, specifically:

[0036] (1) Preparation of coarse functionalized fibers and fine functionalized fibers:

[0037] 1) Preparation of coarse functionalized fibers: the coarse functionalized fibers in this example are short glass fibers, and the preparation process is to prepare short glass fibers with a diameter distribution of 100um by pool kiln drawing; the short glass fibers are inorganic fibers The material has good rigidity;

[0038]2) Preparation of fine functionalized fibers: the fine functionalized fibers in this example are polyacrylic acid fibers, and the preparation process is to prepare polyacrylic acid fibers with a diameter of 400nm-550nm by dry spinning; the polyacrylic acid fibers are high Molecular materials, when the diameter is 400nm-550nm, it has good toughness; combined with the toughness of fine functional fibers and the rigidity of inorganic fiber materials (glass short fibers), th...

Embodiment 3

[0043] A method for preparing a multi-level pore size distribution material, specifically:

[0044] (1) Preparation of coarse functionalized fibers and fine functionalized fibers:

[0045] 1) Preparation of coarse functionalized fibers: the coarse functionalized fibers in this example are silver fibers, and the preparation process is to prepare silver fibers with a diameter distribution of 20um-40um by template method;

[0046] 2) Preparation of fine functionalized fibers: the fine functionalized fibers in this example are polylactic acid fibers, and the preparation process adopts electrospinning process to prepare polylactic acid nanofibers with a diameter of 300nm-350nm;

[0047] (2) Homogenization treatment: According to the mass ratio of the silver fiber and the polylactic acid fiber being 1:150, weigh the silver fiber and the polylactic acid fiber prepared in step (1), and put them into the opening Mixing and opening treatment is carried out in the machine to obtain homo...

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Abstract

The invention belongs to the field of material preparation, and particularly relates to a preparation method of a multi-stage pore-size distribution material. The preparation method comprises the following steps: firstly, preparing functional fibers, wherein chemical groups are arranged on the surfaces of the functional fibers; then, homogenizing the functional fibers to obtain homogenized functional fibers; performing crosslinking treatment on the homogenized functional fibers to obtain the multi-stage pore-size distribution material. The multi-stage pore-size distribution material prepared in the invention has multi-stage pore-size distribution, good adsorption properties, good flexibility and processibility, simple processes, high universality and low equipment requirements, can be subjected to industrial production, and has broad application prospects in many fields.

Description

technical field [0001] The invention mainly belongs to the field of material preparation, and in particular relates to a preparation method of a multi-stage pore size distribution material. Background technique [0002] Although researchers have made great progress in the study of microporous, mesoporous, and macroporous materials in terms of structure, composition, and morphology, they have been widely used in catalysis, adsorption, separation, sensing, and biological science and technology. field. However, in many application fields, microporous, mesoporous, and macroporous materials still have their own advantages and disadvantages. At present, there is still an urgent need to develop new materials that combine the advantages of various pore structures, that is, to construct hierarchical pores according to application needs and structural characteristics. Material. [0003] Multi-level porous materials, on the one hand, can choose to combine the advantages of all levels...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F9/00D01F6/62D06M10/00C08J3/24D06M101/02D06M101/32
CPCC08J3/246C08J2305/08C08J2367/04D01F6/62D01F9/00D06M10/00D06M2101/02D06M2101/32
Inventor 温永强李延生
Owner UNIV OF SCI & TECH BEIJING
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