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Superhydrophobic fibrofelt and its preparation method

A fiber mat and super-hydrophobic technology, applied in fiber type, fiber treatment, plant fiber, etc., to achieve excellent weather resistance, improve binding force, reduce mold growth and even odor effects

Active Publication Date: 2017-12-01
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Currently, the biggest problem facing superhydrophobic fiber mats is the durability of the fabric

Method used

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  • Superhydrophobic fibrofelt and its preparation method
  • Superhydrophobic fibrofelt and its preparation method
  • Superhydrophobic fibrofelt and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] In this embodiment, the anti-fouling, moisture-proof and mildew-proof superhydrophobic fiber felt is prepared according to the following steps:

[0022] (1) Cleaning of the fiber mat: Place the fiber mat in acetone, absolute ethanol and deionized water in sequence, ultrasonically clean it with a 400w ultrasonic cleaner for 10 minutes, and dry it in an oven at 80°C for 10 minutes. Ester fiber;

[0023] (2) Primer resin solution preparation: add room temperature curing fluorocarbon resin and two-component rigid polyurethane resin into the solvent, and form a stable resin solution after 800r / min magnetic stirring for 3 minutes, wherein the mass fraction of the resin is 1%, the mass ratio of fluorocarbon resin to two-component rigid polyurethane resin is 0.5:1, and the solvent used is acetone;

[0024] (3) Preparation of superhydrophobic topcoat solution: in parts by mass, directly put 2 parts of hydrophobic fumed silica nanoparticles and 0.5 part of fluorosilane into 100 ...

Embodiment 2

[0028] In this embodiment, the anti-fouling, moisture-proof and mildew-proof superhydrophobic fiber felt is prepared according to the following steps:

[0029] (1) Cleaning of the fiber mat: place the fiber mat in acetone, absolute ethanol and deionized water in sequence, ultrasonically clean it with a 400w ultrasonic cleaner for 10 minutes, and dry it in an oven at 80°C for 10 minutes. The fiber mat used is paper Quality fiber;

[0030] (2) Primer resin solution preparation: add room temperature curing fluorocarbon resin and two-component rigid polyurethane resin into the solvent, and form a stable resin solution after 800r / min magnetic stirring for 3 minutes, wherein the mass fraction of the resin is 1%, the mass ratio of fluorocarbon resin to two-component rigid polyurethane resin is 0.5:1, and the solvent used is acetone;

[0031] (3) Preparation of superhydrophobic topcoat solution: in parts by mass, directly put 2 parts of hydrophobic fumed silica nanoparticles and 0.5 ...

Embodiment 3

[0034] In this embodiment, the anti-fouling, moisture-proof and mildew-proof superhydrophobic fiber felt is prepared according to the following steps:

[0035](1) Cleaning of the fiber felt: place the fiber felt in acetone, absolute ethanol and deionized water in turn, ultrasonically clean them with a 400w ultrasonic cleaner for 10 minutes, and dry them in an oven at 80°C for 10 minutes. The fiber felt used is cotton fiber;

[0036] (2) Primer resin solution preparation: add room temperature curing fluorocarbon resin and two-component rigid polyurethane resin into the solvent, and form a stable resin solution after 800r / min magnetic stirring for 3 minutes, wherein the mass fraction of the resin is 1%, the mass ratio of fluorocarbon resin to two-component rigid polyurethane resin is 2:1, and the solvent used is a mixed solvent of acetone and tetrahydrofuran;

[0037] (3) Preparation of superhydrophobic topcoat solution: in parts by mass, directly put 2 parts of hydrophobic fum...

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Abstract

The invention provides a superhydrophobic fibrofelt and a preparation method thereof. The preparation method comprises the following steps: ultrasonically cleaning the fibrofelt in acetone, absolute ethanol and deionized water successively, and then drying the fibrofelt; adding room-temperature-cured fluorocarbon resin (FEVE) and two-component rigid polyurethane resin (SRP-FC) into an organic solvent, and carrying out uniform mixing under stirring so as to form a stable resin solution; directly adding hydrophobic fumed silica nanoparticles and fluorosilane into ethanol, and carrying out ultrasonic dispersion so as to prepare a superhydrophobic finish solution; and putting the cleaned fibrofelt in the primer resin solution, carrying out impregnation, then taking the fibrofelt out, removing excess resin and solvents through squeezing, carrying out drying, then subjecting the fibrofelt to dip-coating in the finish solution so as to form a superhydrophobic coating on the resin-treated fibrofelt, and then carrying out drying and curing so as to obtain the anti-fouling anti-moisture anti-mildew superhydrophobic fibrofelt.

Description

technical field [0001] The invention belongs to the field of hydrophobic coatings, and relates to a superhydrophobic fiber felt and a preparation method thereof. Background technique [0002] Wettability is one of the important characteristics of a solid surface. The contact angle is usually used to characterize the wettability of a liquid to a solid. A superhydrophobic surface generally refers to a surface whose contact angle with water droplets is greater than 150° and the rolling angle is less than 10°. In 1997, German botanists Barthlott and Neinhuis revealed for the first time the superhydrophobic phenomenon caused by the joint action of plant leaf microstructure represented by lotus leaves and hydrophobic waxy substances, and clarified the relationship between superhydrophobicity and self-cleaning. Through the continuous research of scholars, it is deduced from the theory of the hydrophobic model that the preparation of superhydrophobic coatings needs to meet two basic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/256D06M15/564D06M11/79D06M13/513B01D39/14B01D46/00D06M101/32D06M101/06
CPCB01D39/14B01D46/001B01D46/0036B01D2239/0428B01D2239/0442B01D2239/0492B01D2239/10D06M11/79D06M13/513D06M15/256D06M15/564D06M16/00D06M2101/06D06M2101/32D06M2200/01
Inventor 张友法罗文余新泉
Owner SOUTHEAST UNIV
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