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Self-cleaning hydrotalcite/fiber fabric composite material with wear resistance and self-repairing functions and preparation method thereof

A fiber fabric and composite material technology, applied in the direction of wear-resistant fibers, liquid-repellent fibers, fiber types, etc., can solve the problems of cumbersome preparation methods, rough surface structure of super-hydrophobic fabrics, easy damage, and poor stability

Active Publication Date: 2021-05-18
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art, to provide a self-cleaning hydrotalcite / fiber fabric composite material with wear-resistant and self-repairing functions and its preparation method, so as to solve the cumbersome preparation method in the prior art. The rough structure on the surface of the superhydrophobic fabric is easy to be destroyed, and the problem of poor stability in extreme environments

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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  • Self-cleaning hydrotalcite/fiber fabric composite material with wear resistance and self-repairing functions and preparation method thereof
  • Self-cleaning hydrotalcite/fiber fabric composite material with wear resistance and self-repairing functions and preparation method thereof
  • Self-cleaning hydrotalcite/fiber fabric composite material with wear resistance and self-repairing functions and preparation method thereof

Examples

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preparation example Construction

[0031] The invention discloses a self-cleaning hydrotalcite / fiber fabric composite material with wear-resistant and self-repairing functions and a preparation method thereof. The preparation method specifically includes the following contents:

[0032] (1) Wash the fabric with detergent, rinse it with deionized water and ethanol, and dry it for later use.

[0033] (2) At room temperature, a certain amount of divalent metal salts and trivalent metal salts are added to an appropriate amount of deionized water respectively, the divalent metal salts are aluminum nitrate, and the trivalent metal salts are aluminum nitrate, magnesium chloride, nitric acid Magnesium, cobalt nitrate or nickel nitrate. Stir evenly under the action of the magnetic rotor, the stirring rate is 100-500r / min, and the stirring time is 5-20min. After stirring, a uniform solution A is formed; Stir for 10-30 minutes, after adding urea, the acidity and alkalinity of the solution can be controlled, and finally t...

Embodiment 1

[0039]

[0040] The fabrics were washed with detergent, rinsed in deionized water and ethanol, and dried before use.

[0041] At room temperature, add 0.1 mol / L nickel nitrate and 0.05 mol / L aluminum nitrate to appropriate amount of deionized water respectively, under the action of a magnetic rotor at 200r / min, stir for 10 minutes and then stir evenly to form a homogeneous solution A; Add 0.4 mol / L ammonium fluoride and 0.3 mol / L urea, stir respectively for 20 min to obtain the precursor solution B of hydrotalcite.

[0042] Put the prepared hydrotalcite precursor solution B into the hydrothermal reaction kettle, add the cleaned fabric and soak for 20 minutes, place it in an oven, and react at 100°C for 10 hours. After the hydrothermal reaction, the samples were taken out, rinsed with deionized water, placed in an oven and dried at 50°C for 12 hours before use.

[0043] Soak the fabric with hydrotalcite in the ethanol solution of 0.08mol / L stearic acid for 30 minutes to car...

Embodiment 2

[0045]

[0046] The fabrics were washed with detergent, rinsed in deionized water and ethanol, and dried before use.

[0047] At room temperature, add 0.08 mol / L nickel nitrate and 0.1 mol / L aluminum nitrate to appropriate amount of deionized water respectively, under the action of a magnetic rotor at 300 r / min, stir for 10 min and then stir evenly to form a homogeneous solution A; then Add 0.3 mol / L ammonium fluoride and 0.2 mol / L urea, stir respectively for 30 min to obtain the precursor solution B of hydrotalcite.

[0048] Put the prepared hydrotalcite precursor solution B into a hydrothermal reaction kettle, add the cleaned fabric and soak for 10 minutes, place it in an oven, and react at 120°C for 15 hours. After the hydrothermal reaction, the samples were taken out, rinsed with deionized water, placed in an oven and dried at 100°C for 2 hours before use.

[0049] Soak the fabric with hydrotalcite in the ethanol solution of 0.06mol / L stearic acid for 20 minutes for ch...

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Abstract

The invention discloses a self-cleaning hydrotalcite / fiber fabric composite material with wear resistance and self-repairing functions and a preparation method thereof. The method adopts an in-situ growth process and comprises the following steps of firstly, cleaning different types of fabrics such as cotton fabrics and polyester in a mixed solution of ethanol and water, and performing drying for later use; secondly, preparing different hydrotalcite precursor solutions, performing uniform stirring, and adding a uniformly stirred solution into a reaction kettle; thirdly, soaking different types of fabrics into the solution, carrying out a hydrothermal reaction after a certain time, and growing different types of hydrotalcites on the surfaces of the fabrics in situ; and finally, soaking the fabrics in an ethanol solution of stearic acid for modification to obtain wear-resistant self-repairing and self-cleaning hydrotalcite fabrics. Different types of hydrotalcites can uniformly grow on the surface of a fiber bundle to form a porous micro-nano structure, the obtained fabrics have excellent self-cleaning performance, the contact angle is 155 degrees or above, and the rolling angle is smaller than 5 degrees.

Description

【Technical field】 [0001] The invention belongs to the technical field of functional composite materials, and in particular relates to a self-cleaning hydrotalcite / fiber fabric composite material with wear-resistant and self-repairing functions and a preparation method thereof. 【Background technique】 [0002] Fabric is one of the important materials that people rely on for survival. It has a loose and porous structure and is used in a wide range of fields, such as medical treatment, clothing, home decoration, bedding, transportation, military fields, public places, etc. Fabric has good hygroscopicity and water absorption, so it is very easy to be polluted, which limits its application in some occasions. In recent years, superhydrophobic fabrics, as an important functional material, have received widespread attention. The fabric itself has a certain surface roughness. With the help of the texture structure of the fabric, the rapid and simple construction of the micro-nano rou...

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): D06M11/45D06M11/49D06M11/44D06M13/188D06M101/06D06M101/32
CPCD06M11/45D06M11/49D06M11/44D06M13/188D06M2200/35D06M2200/30D06M2200/12D06M2101/06D06M2101/32
Inventor 李永李瑞宋浩杰贾晓华杨进王思哲
Owner SHAANXI UNIV OF SCI & TECH
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