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Method for preparing porous nanofiber

A nanofiber and nanoparticle technology, applied in the field of preparation of porous nanofibers, can solve the problems of poor hydrophilicity and dyeability, pollute the environment, complicated operation, etc., achieve the improvement of dyeing rate and color, protect the environment, and improve the specific surface area. Effect

Active Publication Date: 2014-12-24
湖州菱创科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The commonly used polyester is a synthetic fiber. Due to the regular molecular structure of polyester, its hydrophilicity and dyeability are poor. Traditional chemical modification consumes a lot of water and chemicals, which is not only complicated to operate, but also pollutes the environment.

Method used

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  • Method for preparing porous nanofiber
  • Method for preparing porous nanofiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Dissolving the spinning material in a solvent, adding 10% polyvinylpyrrolidone, and stirring evenly, to prepare a nanofiber spinning solution; the mass ratio of the textile material to the solvent is 1:9, and the nanomaterials are polyester, polyacrylonitrile and One or more material mixtures in the copolymer and lignin, the solution is N,N-dimethyldiamide.

[0021] 5% SiO 2 Nanoparticles are added into the nanofiber polymer solution, stirred until uniform by magnetic force, and used as a spinneret solution.

[0022] Add the spinning solution to the electrospinning machine for electrospinning, the additional electric field strength is 0.2kv / cm, the distance between the receiving screen and the spinneret is 10cm, and the baking temperature is 400°C, and the SiO-containing 2 Nanoparticle fibers.

[0023] Will contain SiO 2 The nanofibers of the nanoparticles are soaked in 25% HF solution and stirred slowly for 8 hours, washed and dried to obtain a porous nanofiber fabr...

Embodiment 2

[0026] Dissolve the spinning material in the solvent, add 10% polyvinylpyrrolidone, stir well, and prepare the nanofiber spinning solution; the mass ratio of the textile material to the solvent is 1:5, and the nanomaterials are polyester, polyacrylonitrile and its One or more material mixtures in the copolymer and lignin, the solution is N,N-dimethyldiamide.

[0027] 13% SiO 2 Nanoparticles are added into the nanofiber polymer solution, stirred until uniform by magnetic force, and used as a spinneret solution.

[0028] Add the spinning solution to the electrospinning machine for electrospinning, the additional electric field strength is 2kv / cm, the distance between the receiving screen and the spinneret is 45cm, and the baking temperature is 650°C, and the SiO-containing 2 Nanoparticle fibers.

[0029] Will contain SiO 2 The nanofibers of the nanoparticles were soaked in 55% HF solution and stirred slowly for 16 hours, washed and dried to obtain a porous nanofiber fabric. ...

Embodiment 3

[0032] Dissolving the spinning material in a solvent, adding 10% polyvinylpyrrolidone, stirring evenly, to prepare a nanofiber spinning solution; the mass ratio of the textile material to the solvent is 1:7, and the nanomaterials are polyester, polyacrylonitrile and its One or more material mixtures in the copolymer and lignin, the solution is N,N-dimethyldiamide.

[0033] 8% SiO 2 Nanoparticles are added into the nanofiber polymer solution, stirred until uniform by magnetic force, and used as a spinneret solution.

[0034] Add the spinneret solution to the electrospinning machine for electrospinning, the additional electric field strength is 1kv / cm, the receiving screen is 35cm away from the spinneret, and the baking temperature is 550°C to prepare SiO-containing 2 Nanoparticle fibers.

[0035] Will contain SiO 2 The nanofibers of the nanoparticles are soaked in 45% HF solution and stirred slowly for 10 hours, washed and dried to obtain a porous nanofiber fabric.

[0036]...

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Abstract

The invention discloses a method for preparing a porous nonofiber, and the method comprises the following steps of: dissolving spinning materials into a solvent, adding polyvinyl pyrrolidone, and uniformly stirring to prepare nanofiber polymer solution; adding SiO2 nano-particles into the nanofiber polymer solution, magnetically stirring to an uniform state as spinneret solution; injecting the spinneret solution into an ejector, spinning under the additional electric field, preparing the nanofiber containing the SiO2 nano-particles by controlling spinning time and moving a receiving screen, and finally calcining; soaking the nanofiber solution containing the SiO2 nano-particles with HF (Hydrogen Fluoride) solution, slowly stirring, cleaning and drying to prepare the porous nanofiber fabric. In the method, particles are doped in removal to prepare pores in the nanofiber, as a result, the dyeing property is improved by adopting the provided fabric comparison area.

Description

technical field [0001] The invention relates to a method for preparing porous nanofibers, in particular to a method for preparing porous nanofibers capable of improving dyeability. Background technique [0002] At present, with the improvement of people's living standards and the continuous updating of consumption concepts, consumers have higher and higher requirements on the quality, variety and color of fiber textiles, especially nanofiber textiles. The commonly used polyester is a synthetic fiber. Due to its relatively regular molecular structure, its hydrophilicity and dyeability are poor. Traditional chemical modification consumes a lot of water and chemicals, which is not only complicated to operate, but also pollutes the environment. [0003] At the same time, the use of electrospinning and high-temperature calcination technology equipment to prepare inorganic nanofibers is a method that has been widely used in recent years. The method is simple to operate, and the pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F1/10D01F11/08D01F11/06D01F11/00D01F6/92D01F6/54D01F9/00
Inventor 袁振其
Owner 湖州菱创科技有限公司
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