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Water-resistant environment-friendly fiber filtering material and preparation method thereof

A filter material and nanofiber technology, applied in the field of water-resistant environmental protection fiber filter material and its preparation, can solve the problems of poor water resistance, loss of fiber structure, etc. Effect

Active Publication Date: 2020-11-06
杭州千芝雅卫生用品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

PVA nanofiber membrane has high porosity and low pore size, and has good application potential in the field of air filtration, but due to the large number of hydroxyl groups in the molecule, the water resistance of PVA is poor, and it is exposed to humid conditions for a long time. , electrospun PVA is prone to hydrolysis and loses its fiber structure

Method used

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  • Water-resistant environment-friendly fiber filtering material and preparation method thereof
  • Water-resistant environment-friendly fiber filtering material and preparation method thereof
  • Water-resistant environment-friendly fiber filtering material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] 1. A method for preparing water-resistant polyvinyl alcohol nanofibers, comprising the following steps:

[0036] Weigh 9g of polyvinyl alcohol (1799, degree of alcoholysis 98% (mol / mol)) and mix with 120mL of distilled water, heat to 85°C with stirring, and keep warm for 1.5h to obtain a polyvinyl alcohol fiber solution; Add 0.826g(-)-epigallocatechin and 29.7g L-2-amino-3-methylbutyric acid, heat to 105°C, stir for 1.2h, let stand and cool to obtain surface-modified polyvinyl alcohol The fiber solution is precipitated with acetone, and the product is filtered, and the filtrate is repeatedly washed with distilled water for 3 times, dried and ground. Take the modified polyvinyl alcohol, add water at 92°C and stir to dissolve, prepare 150g 8wt% modified polyvinyl alcohol fiber aqueous solution as the electrospinning liquid, according to the ambient temperature of 25°C, humidity of 28%, receiving distance of 18cm, spinning voltage Electrospinning under the condition of 26...

Embodiment 2

[0040] No (-)-epigallocatechin was added to the surface modification of the polyvinyl alcohol fibers, and the remaining parts were exactly the same as in Example 1.

Embodiment 3

[0042]When carrying out surface modification to polyvinyl alcohol fibers, no L-2-amino-3-methylbutyric acid was added, and the rest were exactly the same as in Example 1.

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PUM

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Abstract

The invention provides a water-resistant environment-friendly fiber filtering material and a preparation method of the water-resistant environment-friendly fiber filtering material, and belongs to thefield of new chemical materials. The water-resistant environment-friendly fiber filtering material is formed by compounding a water-resistant polyvinyl alcohol nanofiber film and a nonwoven fabric. In the process of preparing the water-resistant polyvinyl alcohol nanofiber film, (-)-epigallocatechin is used as a catalyst, an L-2-amino-3-methylbutyric acid is grafted onto polyvinyl alcohol, and then a modified polyvinyl alcohol solution is used as a spinning dope for electrostatic spinning. The water-resistant environment-friendly fiber filtering material has the advantages of environmental protection, high safety, strong water resistance, good filtration performance and good mechanical performance.

Description

technical field [0001] The invention belongs to the field of new chemical materials, and in particular relates to a water-resistant and environment-friendly fiber filter material and a preparation method thereof. Background technique [0002] With the acceleration of industrialization and urbanization in our country, a large amount of smoke and dust are emitted from various emission sources such as industry, life and transportation, which causes a sharp increase in dust particles in the atmosphere and serious air pollution. These suspended particulates (PM) not only reduce air visibility and cause traffic accidents; they also pose a huge threat to our health. Small-sized suspended particles can even directly penetrate the human lung bronchi and capillaries, greatly increasing the risk of various cardiopulmonary diseases. morbidity and mortality. How to design and prepare filter materials that effectively filter suspended particulate matter in the air has become the focus of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/00D01F1/10B01D39/16B01D46/10B32B27/02B32B27/30B32B27/12B32B5/02B32B37/06B32B37/10
CPCB01D39/1623B01D46/10B01D2239/10B01D2258/06B32B5/02B32B5/022B32B5/26B32B37/06B32B37/10B32B2262/0223D01D5/003D01F1/10
Inventor 吴跃
Owner 杭州千芝雅卫生用品有限公司
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