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Metal nano self-assembly fiber material as well as preparation method and application thereof

A fiber material and metal nanotechnology, applied in the field of electrospinning micro-nano fiber medical protective materials and its preparation, can solve the problems of uneven dispersion of fibers, affecting production efficiency, complicated preparation process, etc., and achieve high protection and long service life Prolonged, easy-to-prepare effects

Pending Publication Date: 2022-08-09
INNER MONGOLIA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a metal nanoparticle-doped high molecular polymer electrospun nanofiber medical material prepared by a one-step method, which is used to solve the complicated preparation process of the current metal nanoparticle, which is prone to agglomeration and cannot be uniformly dispersed on the fiber, which affects the The technical problem of production efficiency, the medical material prepared by this method has electrostatic regeneration, antibacterial and anti-radiation properties, and is used for the core filter material of masks

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Metal nano self-assembly fiber material as well as preparation method and application thereof
  • Metal nano self-assembly fiber material as well as preparation method and application thereof
  • Metal nano self-assembly fiber material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Weigh 1g of stabilizer polyvinylpyrrolidone into 20g of N,N-dimethylformamide solvent, stir at 80°C for 4h to dissolve, then cool to room temperature, add 1.5g of silver nitrate in a dark environment, and stir at room temperature Dissolved for 12h to obtain silver nanoparticles, the solution was left to stand for defoaming. Weigh 7g of polyvinylidene fluoride, add it to 20.5g of N,N-dimethylformamide solvent, stir at 80°C for 4h to dissolve, then cool to room temperature, add silver nanoparticles in a dark environment, at 80°C Under stirring for 1 h, a silver nanoparticle-doped polyvinylidene fluoride precursor spinning solution was prepared, and the solution was allowed to stand for defoaming. The mass fraction of polyvinylpyrrolidone is 2%, the mass fraction of polyvinylidene fluoride is 14%, and the mass fraction of silver nitrate is 3%.

[0055] Inject the spinning solution into the syringe pump, use a 17G needle, adjust the distance from the spinning needle tip to...

Embodiment example 2

[0058] Weigh 1g of stabilizer polyvinylpyrrolidone into 20g of N,N-dimethylformamide solvent, stir at 80°C for 4h to dissolve, then cool to room temperature, add 2g of silver nitrate in a dark environment, stir and dissolve at room temperature After 12 h, silver nanoparticles were obtained, and the solution was left to stand for defoaming. Weigh 7g of polyvinylidene fluoride, add it to 20g of N,N-dimethylformamide solvent, stir at 80°C for 4h to dissolve, then cool to room temperature, add silver nanoparticles in a dark environment, and at 80°C After stirring for 1 h, the silver nanoparticle-doped polyvinylidene fluoride precursor spinning solution was prepared, and the solution was allowed to stand for defoaming. The mass fraction of polyvinylpyrrolidone is 2%, the mass fraction of polyvinylidene fluoride is 14%, and the mass fraction of silver nitrate is 4%.

[0059] Inject the spinning solution into the syringe pump, use a 17G needle, adjust the distance from the spinning ...

Embodiment example 3

[0062] Weigh 1g of stabilizer polyvinylpyrrolidone into 20g of N,N-dimethylformamide solvent, stir at 80°C for 4h to dissolve, then cool to room temperature, add 2.5g of silver nitrate in a dark environment, and stir at room temperature Dissolved for 12h to obtain silver nanoparticles, the solution was left to stand for defoaming. Weigh 7g of polyvinylidene fluoride, add it to 19.5g of N,N-dimethylformamide solvent, stir at 80°C for 4h to dissolve, then cool to room temperature, add silver nanoparticles in a dark environment, and at 80°C Under stirring for 1 h, a silver nanoparticle-doped polyvinylidene fluoride precursor spinning solution was prepared, and the solution was allowed to stand for defoaming. The mass fraction of polyvinylpyrrolidone is 2%, the mass fraction of polyvinylidene fluoride is 14%, and the mass fraction of silver nitrate is 5%.

[0063] Inject the spinning solution into the syringe pump, use a 17G needle, adjust the distance from the spinning needle ti...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention provides a metal nanoparticle doped high-molecular polymer electrostatic spinning nanofiber medical material prepared by a one-step method, which is prepared by the following steps: adding metal salt into an organic solvent, reducing metal particles by utilizing the reducibility of the organic solvent, then adding the reduced metal particles into a high-molecular polymer spinning solution, and carrying out electrostatic spinning to obtain the metal nanoparticle doped high-molecular polymer electrostatic spinning nanofiber medical material. The preparation method comprises the following steps: mixing metal nanoparticles with a high-molecular polymer precursor to obtain a metal nanoparticle doped high-molecular polymer precursor spinning solution, and carrying out self-assembly on the metal nanoparticles along with spraying of the spinning solution to prepare the fiber membrane with a cobweb structure. The medical material prepared by the method has electrostatic regeneration, antibacterial and anti-radiation properties, and is used as a mask core filter material. According to the prepared mask, the anti-bacterial effect is guaranteed, meanwhile, long-time static adsorption is not changed, the service life of the mask is prolonged, and meanwhile the mask is endowed with the anti-radiation function. The pressure of the waste mask on the environment is powerfully relieved, and the harm of electromagnetic radiation to the human body in production and life is reduced.

Description

technical field [0001] The invention belongs to the field of medical protective materials, and in particular relates to an electrospinning micro-nano fiber medical protective material with long-term filtration, antibacterial and anti-radiation properties and a preparation method thereof. Background technique [0002] Masks usually consist of a three-layer structure, including outer spunbond, interlayer meltblown, and inner spunbond, in which the interlayer meltblown cloth plays a key role in filtering. Meltblown cloth has unique advantages in mechanical protection, such as direct interception, Brownian diffusion, gravity sedimentation and electrostatic effect on particles. The traditional preparation of meltblown cloth is to extrude polymer solution or melt under the action of thermal current. It is stacked to produce micron or micron-scale microfibers. There is a problem of being easily damped during the use of the mask. The filtration efficiency continues to decrease with ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/00D01F1/10A41D13/11B01D39/02B01D39/04B01D39/06
CPCD01D5/0007D01F1/103D01F1/10A41D13/1192B01D39/02B01D39/04B01D39/06B01D2239/0442B01D2239/0407B01D2239/10
Inventor 高晓平杨博琛马彩霞康乐
Owner INNER MONGOLIA UNIV OF TECH
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