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A kind of fluorine-free self-healing-superhydrophobic finishing agent and its preparation method and application

A super-hydrophobic and self-repairing technology, which is applied in fiber processing, textiles and papermaking, plant fibers, etc., can solve the problems of complex process and limit the wide application of self-repairing super-hydrophobic cotton fabrics, and achieve simple preparation methods and avoid environmental problems , good stain resistance effect

Active Publication Date: 2022-02-15
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, there are problems such as complex preparation processes, which limit the wide application of self-healing superhydrophobic cotton fabrics in industrial production.

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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  • A kind of fluorine-free self-healing-superhydrophobic finishing agent and its preparation method and application
  • A kind of fluorine-free self-healing-superhydrophobic finishing agent and its preparation method and application
  • A kind of fluorine-free self-healing-superhydrophobic finishing agent and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Fabric: Pure cotton woven fabric (C14.5×C14.5tex, 133×172 threads / cm)

[0044] Prepare a hexadecyltrimethoxysilane solution with a concentration of 9.0wt%, and process the solution with oxygen plasma: treat with 300W for 300s, mix in a microreactor, rotate at 600rpm for 30min, and finally pass ultrasonic dispersion 500W for 60 minutes to prepare a self-repairing fluorine-free superhydrophobic finishing agent.

[0045] The cotton fabric was immersed in the prepared self-repairing fluorine-free superhydrophobic finishing agent, the immersion time was 40min, the pre-drying temperature was 80°C, the pre-drying time was 4min, the baking temperature was 150°C, and the baking time was 3min, the obtained Self-healing superhydrophobic cotton fabric.

Embodiment 2

[0047] Fabric: Pure cotton woven fabric (C14.5×C14.5tex, 133×172 threads / cm)

[0048] Prepare an aqueous solution of cetyltrimethoxysilane with a concentration of 12.0wt%, and process the solution with oxygen plasma: the power is 250W, the treatment time is 180s, mixed in a microreactor, the rotation speed is 700rpm, the time is 20min, and finally ultrasonic Dispersion, with a power of 400W, a treatment temperature of 60°C, and a treatment time of 30 minutes, to prepare a self-repairing fluorine-free superhydrophobic finishing agent.

[0049] The cotton fabric was immersed in the prepared fluorine-free self-repairing-superhydrophobic finishing agent, the immersion time was 40min, the pre-drying temperature was 80°C, the pre-drying time was 4min, the baking temperature was 130°C, and the baking time was 5min. A self-healing superhydrophobic cotton fabric was obtained.

Embodiment 3

[0051] Fabric: Pure cotton woven fabric (C14.5×C14.5tex, 133×172 threads / cm)

[0052] Prepare an aqueous solution of cetyltrimethoxysilane with a concentration of 15.0 wt%, and then process the solution with oxygen plasma: 300W power for 240s, mixing in a microreactor at 800rpm for 25min, and finally ultrasonic dispersion. The power is 300W, the treatment temperature is 30°C, and the treatment time is 60 minutes to prepare a self-repairing fluorine-free superhydrophobic finishing agent.

[0053] The cotton fabric was soaked in the prepared fluorine-free self-repairing-superhydrophobic finishing agent, the soaking time was 60min, the pre-baking temperature was 80°C, the pre-baking time was 4min, the baking temperature was 120°C, and the baking time was 5min. A self-healing superhydrophobic cotton fabric was obtained.

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Abstract

The invention discloses a fluorine-free self-repair superhydrophobic finishing agent, a preparation method and application thereof, and belongs to the field of functional additives. The synthesis method of the present invention for preparing self-healing superhydrophobic emulsion is as follows: preparation of superhydrophobic aqueous solution → oxygen plasma treatment → microreactor mixing → ultrasonic dispersion, and self-healing superhydrophobic emulsion can be obtained. The preparation process of the present invention is simple, easy to operate, does not need special and complicated instruments and equipment, and is low in cost. The contact angle with water after finishing the cotton fabric can reach more than 158.7°, and the static contact angle with water after 30 times of washing remains at 153.0° above. And the fabric shows excellent repair performance. After 8 times of oxygen plasma etching or 1000 standard friction experiments, the fabric is in a hydrophilic state. The fabric is placed in an environment with a temperature of 80°C for 30 minutes. The static contact angle of the fabric can be Recovery above 153.0°. At the same time, the self-healing superhydrophobic cotton fabric has excellent washing and stain resistance.

Description

technical field [0001] The invention relates to a fluorine-free self-repairing-superhydrophobic finishing agent and its preparation method and application, belonging to the field of functional additives. Background technique [0002] In recent years, the design of materials that mimic some of the unique properties and functions of living things in nature has had a major impact on human life. Inspired by the fact that the surface of the lotus leaf "comes out of silt without staining", a super-hydrophobic surface was successfully constructed. When superhydrophobic materials are applied to the textile field, the superhydrophobic properties of the fabric surface are determined by both surface roughness and surface free energy. It has important application prospects. However, the non-durability of superhydrophobic fabrics limits its application in real life. The low surface energy substances on the surface of superhydrophobic fabrics are decomposed under strong light and stron...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M13/513D06M23/12D06M101/06
CPCD06M13/513D06M23/12D06M2101/06D06M2200/12D06M2200/01
Inventor 苏静王鸿博杨雪
Owner JIANGNAN UNIV