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Super-hydrophilic-superoleophobic self-healing fabric and preparation method thereof

A super-oleophobic and super-hydrophilic technology, which is applied in general water supply saving, textile and papermaking, fiber treatment, etc., can solve the problem of affecting service life, loss, super-hydrophilic-super-oleophobic coating firmness is not very ideal, etc. problem, to achieve the effect of more cycles and better effect

Active Publication Date: 2022-07-05
JIAXING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The firmness of the superhydrophilic-superoleophobic coating is not ideal, and it is easily damaged by external physical or chemical damage and loses this characteristic, thus affecting its service life

Method used

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  • Super-hydrophilic-superoleophobic self-healing fabric and preparation method thereof
  • Super-hydrophilic-superoleophobic self-healing fabric and preparation method thereof
  • Super-hydrophilic-superoleophobic self-healing fabric and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Preparation of chitosan acetic acid solution: dissolve 3wt% chitosan (with a degree of deacetylation of 90wt% and a molecular weight of 500,000) in an acetic acid solution with a concentration of 2wt%;

[0029] (2) Preparation of superhydrophilic-superoleophobic solution: add 2wt% Capstone FS-60 to the chitosan acetic acid solution prepared in step (1), then add 3wt% sodium tripolyphosphate, and stir evenly at room temperature;

[0030] (3) Add 2 wt% dopamine to the superhydrophilic-superoleophobic solution prepared in step (2), and put it in a UV box (365 nm, 50 mW cm -2 ) at room temperature and evenly stirred for 12 hours;

[0031] (4) Immerse the fabric in the solution prepared in step (3) for 3 minutes, and then heat at 100° C. for 20 minutes to obtain the desired superhydrophilic-superoleophobic self-healing fabric.

Embodiment 2

[0033] (1) Preparation of chitosan acetic acid solution: dissolve 1wt% chitosan (deacetylation degree is 85wt%, molecular weight is 200,000) in acetic acid solution with a concentration of 1wt%;

[0034] (2) Preparation of superhydrophilic-superoleophobic solution: add 1wt% Capstone FS-60 to the chitosan acetic acid solution prepared in step (1), then add 1wt% sodium tripolyphosphate, and stir evenly at room temperature;

[0035] (3) Add 1 wt% dopamine to the superhydrophilic-superoleophobic solution prepared in step (2), and put it in a UV box (254 nm, 100 mW cm -2 ) at room temperature and evenly stirred for 8 hours;

[0036] (4) Immerse the fabric in the solution prepared in step (3) for 1 minute, and then heat at 80° C. for 15 minutes to obtain the desired superhydrophilic-superoleophobic self-healing fabric.

Embodiment 3

[0038] (1) Preparation of chitosan acetic acid solution: dissolve 5wt% chitosan (with a degree of deacetylation of 95wt% and a molecular weight of 1.5 million) in an acetic acid solution with a concentration of 3wt%;

[0039] (2) Preparation of superhydrophilic-superoleophobic solution: add 3wt% Capstone FS-60 to the chitosan acetic acid solution prepared in step (1), then add 5wt% sodium tripolyphosphate, and stir evenly at room temperature;

[0040] (3) Add 5 wt% dopamine to the superhydrophilic-superoleophobic solution prepared in step (2), and put it in a UV box (254 nm, 100 mW cm -2 ) at room temperature and evenly stirred for 24 hours;

[0041] (4) Immerse the fabric in the solution prepared in step (3) for 5 minutes, and then heat at 120° C. for 30 minutes to obtain the desired superhydrophilic-superoleophobic self-healing fabric.

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 discloses a preparation method of a super-hydrophilic-super-oleophobic self-healing fabric. The preparation method is characterized by comprising the following steps: (1) preparing a chitosan acetic acid solution: dissolving chitosan in the acetic acid solution; (2) preparing a super-hydrophilic-super-oleophobic solution: adding Capstone FS-60 into the chitosan acetic acid solution prepared in the step (1), then adding sodium tripolyphosphate, and uniformly stirring at normal temperature; (3) adding dopamine into the super-hydrophilic-super-oleophobic solution prepared in the step (2), and uniformly stirring in an ultraviolet box at normal temperature for 8-24 hours; and (4) immersing the fabric into the solution prepared in the step (3), and heating at 80-120 DEG C for 15-30 minutes. The invention further discloses the super-hydrophilic and super-oleophobic self-healing fabric prepared by adopting the preparation method. Compared with the prior art, the service life of the super-hydrophilic-super-oleophobic self-healing fabric can be prolonged.

Description

technical field [0001] The invention relates to the technical field of fabric surface modification, in particular to a superhydrophilic-superoleophobic self-healing fabric and a preparation method thereof. Background technique [0002] Superhydrophilic-superoleophobic fabrics have very broad application prospects. In recent years, the phenomenon of oil pollution in water quality has received more and more attention, and how to separate oil and water has become an increasingly urgent problem. Superhydrophobic-superoleophilic fabrics have been widely used for oil-water separation, but such fabrics are easily contaminated, and the density of oil is generally lower than that of water, and the water layer can easily block the oil layer from permeating. The superhydrophilic-superoleophobic fabric can effectively solve this problem. Under the action of gravity, water permeates the fabric, while oil is blocked by the fabric, so as to achieve the purpose of oil-water separation. In...

Claims

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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/03D06M23/12
CPCD06M15/03D06M23/12D06M2200/11Y02A20/204
Inventor 符思达徐之光
Owner JIAXING UNIV