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Super-amphiphobic textile finishing agent as well as preparation method and application thereof

A technology for textile finishing and solvent, applied in textile and papermaking, fiber treatment, fiber repelling to liquid, etc., can solve the problems of poor mechanical stability, damage, influence, etc., and achieve the effect of long service life and good mechanical properties

Active Publication Date: 2019-03-15
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Poor mechanical stability also greatly limits the industrial application of the existing superamphiphobic surface, making the superamphiphobic surface easily damaged when subjected to severe washing and abrasion or used under harsh working conditions, thus affecting hydrophobic and oleophobic surfaces. effect makes an impact

Method used

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  • Super-amphiphobic textile finishing agent as well as preparation method and application thereof
  • Super-amphiphobic textile finishing agent as well as preparation method and application thereof
  • Super-amphiphobic textile finishing agent as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Preparation of silica sol: under the condition of constant stirring, add ammonia water to 50 parts of methanol solution, adjust the pH to 8.5, then add 2 parts of methyltrimethoxysilane to the mixed solution, and react at a speed of 800rpm 4h to form a transparent silica sol;

[0031] (2) Low surface energy modification: Add 0.3 parts of perfluorodecyltriethoxysilane, 3 parts of fluorocarbon resin and 0.3 parts of hexamethylene diisocyanate curing agent to 50 parts of tetrahydrofuran solution at a rotational speed of 1200 rpm;

[0032] (3) Soak the polyester fabric in (1) for 15 minutes, take it out and dry it at room temperature for 15 minutes, then soak it in (2) for 15 minutes, and finally dry it at 120°C for 2 hours.

[0033] figure 1 It is a low-magnification scanning electron microscope picture of the superamphiphobic polyester fabric in the embodiment. The prepared super-amphiphobic polyester fabric still maintains super-amphiphobic properties after soaking...

Embodiment 2

[0035] (1) Preparation of silica sol: under the condition of constant stirring, add ammonia water to 50 parts of ethanol solution, adjust the pH to 8.0, then add 2 parts of vinyltriethoxysilane to the mixed solution, and with the speed of 800rpm Reaction 8h forms transparent silica sol;

[0036] (2) Low surface energy modification: Add 0.2 parts of perfluorodecyltrichlorosilane, 2 parts of fluorocarbon resin and 0.1 part of hexamethylene to 50 parts of N,N-dimethylformamide solution at 1000 rpm Diisocyanate curing agent;

[0037] (3) Soak the polyester fabric in (1) for 15 minutes, take it out and dry it at room temperature for 15 minutes, then soak it in (2) for 15 minutes, and finally dry it at 120°C for 2 hours.

[0038] figure 2 It is a high-magnification scanning electron microscope picture of the superamphiphobic polyester fabric in the embodiment. The prepared superamphiphobic polyester fabric has a water contact angle of more than 150° and an oil droplet contact an...

Embodiment 3

[0040] (1) Preparation of silica sol: under the condition of constant stirring, add ammonia water to 50 parts of isopropanol solution, adjust the pH to 8.5, then add 1 part of trimethylchlorosilane and 2 parts of propyltrimethylsilane to the mixed solution Oxysilane, and reacted for 8 hours at a speed of 800rpm to form a transparent silica sol;

[0041] (2) Low surface energy modification: Add 0.2 parts of perfluorooctyl trichlorosilane and 3 parts of silicone resin, 0.3 parts of vinyltrimethoxy base silane curing agent;

[0042] (3) Soak the pure cotton fabric in (1) for 15 minutes, take it out and dry it at room temperature for 15 minutes, then soak it in (2) for 15 minutes, and finally dry it at 90°C for 2 hours.

[0043] image 3 Be the water drop ( image 3 a) and oil droplet ( image 3 b) Optical photograph of the contact angle.

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Abstract

The invention discloses a super-amphiphobic textile finishing agent as well as a preparation method and application thereof. The finishing agent is prepared from silica sol containing volatile organicsolvents, siloxane and ammonia water, and a low surface energy modified solution containing the volatile organic solvents, a fluorine-containing modifier and hydrophobic resin; the super-amphiphobictextile finishing agent is specifically prepared from the following raw materials in parts by weight: 40 to 100 parts of volatile organic solvents, 2 to 10 parts of siloxane, 2 to 10 parts of ammoniawater, 2 to 5 parts of hydrophobic resin, 0.1 to 0.5 part of a curing agent and 0.1 to 1 part of a fluorine-containing modifier. The static contact angle between surface water drops and oil drops of the fabric prepared by the super-amphiphobic textile finishing agent disclosed by the invention is greater than 150 degrees, and the drops are easy to roll on the surface. After long-time soaking in astrong acid and strong alkali solution or after long-time washing or abrasing, the fabric still has the excellent super-amphiphobic property. Meanwhile, the preparation method of the super-amphiphobictextile finishing agent has the advantages of simple and feasible preparation process, no change of fabric color, easiness in controlling the process and convenience in mass production.

Description

technical field [0001] The invention relates to a superamphiphobic textile finishing agent and its preparation method and application, belonging to the technical field of textile finishing agents. Background technique [0002] At present, superhydrophobic fabrics are relatively common on the market, but ordinary superhydrophobic fabrics have weak repellency to liquids with low surface tension (<35mN / m). Therefore, the application of superhydrophobic fabrics is limited due to the inability to repel these low surface tension liquids. [0003] A superamphiphobic surface refers to a surface with a contact angle greater than 150° for both water and low surface tension fluids. Water and oil droplets can easily roll off these surfaces. The superamphiphobic surface has also attracted much attention due to its excellent prospects in various applications, such as anti-drag reduction, fingerprint plates, anti-corrosion, protective clothing, etc. Fabrics with superamphiphobic prop...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/643D06M11/79D06M15/256
CPCD06M11/79D06M15/256D06M15/643D06M2200/01D06M2200/11D06M2200/12
Inventor 姜勇周旋江鹏飞张川
Owner SOUTHEAST UNIV
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