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Method for preparing superhydrophobic antibacterial fabric based on quaternary silica

A silicon dioxide and antibacterial fabric technology, applied in plant fiber, biochemical fiber treatment, textile and papermaking, etc., can solve the problems of application limitation, fluorine-containing compounds have great environmental and ecological impact, and affect fabric color and luster, and achieve pure color and light, Environmentally friendly and brightly colored fabrics

Inactive Publication Date: 2019-01-08
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are two main methods for preparing superhydrophobic and antibacterial functional textiles. One is to coat elemental silver nanoparticles on the fabric to achieve superhydrophobic antibacterial effect, but the cost of this preparation method is high, and the adhesion of silver nanoparticles It will make the fabric appear brown-black, which affects the color of the fabric; secondly, the antibacterial small molecules are grafted onto the silicone oil finishing agent to achieve the antibacterial effect, but due to the lack of micro-nano particles with a rough surface, it is difficult to achieve a more ideal hydrophobicity. Effect, this method usually needs to be further modified by adding fluorine-containing compounds. Although it can improve the hydrophobicity to a certain extent, fluorine-containing compounds have a greater impact on the environment and ecology, and cannot meet the requirements of green environmental protection. limit

Method used

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  • Method for preparing superhydrophobic antibacterial fabric based on quaternary silica
  • Method for preparing superhydrophobic antibacterial fabric based on quaternary silica
  • Method for preparing superhydrophobic antibacterial fabric based on quaternary silica

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Synthesis of antibacterial compounds: Take 10.65g of N,N-dimethyldodecylamine and 25g of isopropanol in a three-necked flask, then slowly drop in 6.01g of epichlorohydrin, stir evenly, and heat up to 50°C After reacting for 5 h, anhydrous ether was poured into the obtained product to produce a white precipitate, which was centrifuged and washed several times with anhydrous ether, and dried in vacuo at 60° C. for 12 h to obtain a white solid.

[0035] (2) Amino-modified silica: Take 4g of silica in a round-bottomed flask, add 100ml of toluene for ultrasonic dispersion, heat up to 100°C, add 0.2g of KH-550, and reflux for 5 hours. Disperse in isopropanol and perform multiple washes with isopropanol.

[0036] (3) Grafting silica with EPDDAC: Add 0.2 g of the product obtained in step (1) to the dispersion obtained in step (2), react at 40°C for 12h, and vacuum-dry at 70°C for 5h after centrifugal washing.

[0037] (4) Preparation of padding liquid: get 0.4g of IMK-2035...

Embodiment 2

[0045] (1) Synthesis of antibacterial compounds: Take 10.65g of N,N-dimethyldodecylamine and 30g of isopropanol in a three-necked flask, then slowly drop in 4.63g of epichlorohydrin, stir evenly, and heat up to 60°C After reacting for 4 hours, anhydrous diethyl ether was poured into the obtained product to produce a white precipitate, which was centrifuged and washed several times with anhydrous diethyl ether, and then vacuum-dried at 60° C. for 12 h to obtain a white solid.

[0046] (2) Amino-modified silica: Take 4g of silica in a round-bottomed flask, add 100ml of toluene for ultrasonic dispersion, heat up to 100°C, add 0.3g of KH-550, and reflux for 5 hours. The obtained product is centrifuged and re- Disperse in isopropanol and perform multiple washes with isopropanol.

[0047] (3) Grafting silica with EPDDAC: Add 0.4 g of the product obtained in step (1) to the dispersion obtained in step (2), react at 40°C for 15 hours, and vacuum-dry at 70°C for 5 hours after centrifug...

Embodiment 3

[0052] (1) Synthesis of antibacterial compounds: Take 8.52g of N,N-dimethyldodecylamine and 25g of isopropanol in a three-necked flask, then slowly drop in 6.47g of epichlorohydrin, stir evenly, and heat up to 70°C After reacting for 3 hours, anhydrous diethyl ether was poured into the obtained product to produce a white precipitate, which was centrifuged and washed several times with anhydrous diethyl ether, and then vacuum-dried at 60° C. for 12 h to obtain a white solid.

[0053] (2) Amino-modified silica: Take 4g of silica in a round-bottomed flask, add 100ml of toluene for ultrasonic dispersion, heat up to 110°C, add 0.3g of KH-550, and reflux for 4 hours. The obtained product is centrifuged and re- Disperse in isopropanol and perform multiple washes with isopropanol.

[0054] (3) Grafting silica with EPDDAC: Add 0.4 g of the product obtained in step (1) to the dispersion obtained in step (2), react at 50°C for 10 hours, and vacuum-dry at 70°C for 5 hours after centrifuga...

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Abstract

The invention discloses a method for preparing superhydrophobic antibacterial fabric based on quaternary silica. The method comprises the following steps: firstly, an epoxypropyl dimethyl dodecyl ammonium chloride antibacterial compound is synthesized, then silica is modified, the antibacterial compound is grafted onto the surface of silica particles, and silica is endowed with antibacterial property; padding, is performed on the fabric with a mixed dispersion solution of an adhesive and antibacterial silica as a padding solution, then drying and baking are performed, so that the antibacterialsilica particles are fixed on the surface of the fabric, the fabric is endowed with antibacterial performance, and a rough surface required for obtaining superhydrophobicity is constructed; finally,the fabric is further treated with a fluorine-free water repellent, and the superhydrophobic property is obtained. The prepared fabric has excellent antibacterial performance and super hydrophobicity,multifunction of the fabric is achieved, and the preparation method is simple and convenient.

Description

technical field [0001] The invention relates to the technical field of preparation of multifunctional fabrics, in particular to a method for preparing superhydrophobic antibacterial fabrics based on quaternized silicon dioxide. Background technique [0002] With the continuous improvement of people's living standards, people's awareness of wearing comfort and hygiene and health is increasing. Textiles are required not only to have good air permeability, but also to have multiple functions such as water repellency, antifouling and antibacterial. Therefore, multifunctional superhydrophobic antibacterial fabrics The preparation has high use value and broad application prospect. [0003] At present, there are two main methods for preparing superhydrophobic and antibacterial functional textiles. One is to coat elemental silver nanoparticles on the fabric to achieve superhydrophobic antibacterial effect, but the cost of this preparation method is high, and the adhesion of silver n...

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): D06M11/79D06M15/61D06M15/643D06M101/06
CPCD06M11/79D06M15/61D06M15/643D06M15/6436D06M16/00D06M2101/06D06M2200/12
Inventor 刘维锦宋洁瑶熊迷迷
Owner SOUTH CHINA UNIV OF TECH
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