A kind of super-amphiphobic textile finishing agent and its preparation method and application

A textile finishing, super-amphiphobic technology, applied in textiles and papermaking, fiber processing, liquid repellent fibers, etc., can solve the problems of poor mechanical stability, damage, influence, etc., and achieve long service life and good mechanical properties. Effect

Active Publication Date: 2022-01-28
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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  • A kind of super-amphiphobic textile finishing agent and its preparation method and application
  • A kind of super-amphiphobic textile finishing agent and its preparation method and application
  • A kind of super-amphiphobic textile finishing agent and its preparation method and application

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 superamphiphobic textile finishing agent and its preparation method and application. The finishing agent includes silica sol made of volatile organic solvent, siloxane and ammonia water, volatile organic solvent, fluorine-containing modified A low surface energy modification solution made of solvent and hydrophobic resin, wherein the weight ratio of each raw material is as follows: 40-100 parts of volatile organic solvent, 2-10 parts of siloxane, 2-10 parts of ammonia water, hydrophobic 2-5 parts of resin, 0.1-0.5 parts of curing agent, 0.1-1 part of fluorine-containing modifier. The static contact angles of water droplets and oil droplets on the fabric surface prepared by the super-amphiphobic textile finishing agent of the present invention are all greater than 150°, and the droplets are easy to roll on the surface. After being soaked in strong acid and strong alkali solution for a long time or washed or rubbed for a long time, the fabric still has excellent super-amphiphobic properties. At the same time, the preparation process is simple and easy, the color of the fabric itself is not changed, the process is easy to control, and it is convenient for large-scale 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 Patents(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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