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A composite material for filtering fine particles, its preparation method and application

A composite material, fine particle technology, used in separation methods, filtration separation, dispersed particle filtration, etc.

Active Publication Date: 2021-07-06
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Up to now, there are no reports on the use of biorenewable based self-assembled materials for PM filtration

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0022] Example 1: Phenylalanine methyl ester hydrochloride melamine-formaldehyde foam composite material

[0023] The preparation concentration is 50mg·mL –1 The ethanol solution of phenylalanine methyl ester hydrochloride; In the obtained solution, add the skeleton material melamine-formaldehyde foam that is cut into a disc shape with a diameter of 1.2cm and a thickness of 0.1cm, and then add 10 times the volume of acetonitrile ; Place at room temperature for 10 minutes, and dry at room temperature after the solution forms a white gel.

example 2

[0024] Example 2: Phenylalanine methyl ester hydrochloride melamine-formaldehyde foam composite material

[0025] The preparation concentration is 150mg·mL –1 The ethanol solution of phenylalanine methyl ester hydrochloride; In the solution that adds and cuts into diameter and be 2.5cm, thickness is the skeleton material melamine-formaldehyde foam of the disc shape of 0.4cm in the solution that obtains, then adds the acetonitrile of equal volume; Stand at room temperature for 10 minutes, and dry at 0°C after the solution forms a white gel.

example 3

[0026] Example 3: Phenylalanine methyl ester hydrochloride melamine-formaldehyde foam composite material

[0027] The preparation concentration is 300mg·mL –1 The ethanol solution of phenylalanine methyl ester hydrochloride; to the obtained solution, add the skeleton material melamine-formaldehyde foam that is cut into a disc with a diameter of 5 cm and a thickness of 0.8 cm, and then add a certain 2 / 3 volume of Acetonitrile; stand at room temperature for 10 minutes, and dry at 0°C after the solution forms a white gel.

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PUM

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Abstract

A composite material for filtering fine particles, which is composed of a polymer matrix material and an amino acid ester salt ion fiber material according to a mass ratio of 1:0.4 to 10; during preparation, 1) amino acid ester salt is added to ethanol to prepare 50~300mg·mL –1 2) adding a polymer matrix material to the ethanol solution, then adding acetonitrile, standing at room temperature or in an ice-water bath for 1-30min, and drying the solution after forming a white gel. The composite material prepared by the invention combines biorenewability and self-assembly characteristics, and has the advantages of environmental friendliness of biopolymer materials, many ionic groups and easy preparation of self-assembly materials.

Description

technical field [0001] The invention belongs to the field of composite material preparation, and in particular relates to a composite material for filtering fine particles, a preparation method and application thereof. Background technique [0002] Suspended particulate matter (Particulate Matters, PM) in the air, especially fine particulate matter (PM 2.5 ) pose a serious hazard to human health. Existing PM filter materials are mainly based on surface inert polymer compounds, such as polyethylene, polypropylene, etc. These materials mainly rely on direct interception (inertial collision, Brownian motion diffusion, interception) to intercept fine particles larger than the pore size outer. Since their primary effective filtration mechanism is based on size sieving, such porous materials typically have smaller pores and thus higher pressure drops. [0003] In recent years, filter materials based on biorenewable polymers prepared by electrospinning have received more and mor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D39/16B01D46/00
Inventor 何玲张磊袁闻励张国浩陶国宏
Owner SICHUAN UNIV
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