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A kind of fluorine-free durable superhydrophobic cotton fabric finishing agent and the method for finishing cotton fabric

A fabric finishing agent and cotton fabric technology, which is applied in the fields of plant fiber, fiber treatment, textiles and papermaking, etc., can solve the problem of poor combination of cotton fabric finishing agent and substrate, and the method is simple and easy to improve fastness and water repellency strong effect

Active Publication Date: 2017-03-15
GUANGZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] An object of the present invention is to propose a fluorine-free durable superhydrophobic cotton fabric finishing agent, which solves the problem that the cotton fabric finishing agent in the prior art is not firmly combined with the substrate

Method used

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  • A kind of fluorine-free durable superhydrophobic cotton fabric finishing agent and the method for finishing cotton fabric

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment 1: Fluorine-free durable superhydrophobic cotton fabric finishing agent A finishing cotton fabric A

[0018] Disperse 0.2 g of silicon spheres with a diameter of 150 nanometers in 100 mL of ethanol, add 10 mL of glacial acetic acid, add 5 g of dodecyltrimethoxysilane, stir at room temperature for 5 h, and obtain the modified silicon spheres after three times of centrifugation and ethanol rinsing. . Disperse 0.1 g of modified silicon spheres, 0.1 g of IPDI, and 0.01 g of dibutyltin dilaurate in 20 mL of acetone to obtain a fluorine-free durable superhydrophobic cotton fabric finishing agent A. Soak about 0.05g of cotton cloth in fluorine-free durable superhydrophobic cotton fabric finishing agent A for 1 hour, put the soaked cotton fabric in an oven for pre-baking at 80°C for 30 minutes, and bake at 120°C for 6 hours to obtain cotton fabric sample A.

Embodiment 2

[0019] Embodiment 2: Fluorine-free durable superhydrophobic cotton fabric finishing agent B finishing cotton fabric B

[0020] Disperse 0.2g of silicon spheres with a diameter of 150nm in 100mL of ethanol, add 10mL of glacial acetic acid, add 5g of hexadecyldimethoxysilane, stir at room temperature for 5h, and obtain a modified silicon sphere after three times of centrifugation and ethanol rinsing. ball. Disperse 0.1 g of modified silicon spheres, 0.1 g of HDI, and 0.01 g of dibutyltin dilaurate in 20 mL of acetone to obtain a fluorine-free durable superhydrophobic cotton fabric finishing agent B. Soak about 0.05g of cotton cloth in fluorine-free durable superhydrophobic cotton fabric finishing agent B for 1 hour, put the soaked cotton fabric in an oven for pre-baking at 80°C for 30 minutes, and bake at 120°C for 6 hours to obtain cotton fabric sample B.

Embodiment 3

[0021] Embodiment 3: Fluorine-free durable superhydrophobic cotton fabric finishing agent C finishing cotton fabric C

[0022] Disperse 0.2 g of silicon spheres with a diameter of 90 nanometers in 100 mL of ethanol, add 10 mL of glacial acetic acid, add 5 g of hexadecyldimethoxysilane, and stir at room temperature for 5 h. The obtained product is centrifuged three times and rinsed with ethanol to obtain a modified silicon ball. Disperse 0.1 g of modified silicon spheres, 0.1 g of HDI, and 0.01 g of dibutyltin dilaurate in 20 mL of ethyl acetate to obtain a fluorine-free durable superhydrophobic cotton fabric finishing agent C. Soak about 0.05g of cotton cloth in fluorine-free durable superhydrophobic cotton fabric finishing agent C for 1 hour, put the soaked cotton fabric in an oven for pre-baking at 80°C for 30 minutes, and bake at 120°C for 6 hours to obtain cotton fabric sample C.

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Abstract

The invention discloses a fluorine-free durable super-hydrophobic cotton fabric finishing agent. The fluorine-free durable super-hydrophobic cotton fabric finishing agent is prepared by mixing the following components: modified silicon balls, isocyanate, a catalyst and a solvent, wherein the diameter of the modified silicon balls is 10-5000 nm. According to the fluorine-free durable super-hydrophobic cotton fabric finishing agent disclosed by the invention, the chemical bond joining is utilized to effectively improve the fastness between the coating of the cotton fabric finishing agent and the cotton fabric substrate, and fluorinated compound or solvent is not used; based on the hydrophobic modified silicon component and the chemical reaction between isocyanate and hydroxyl, the finished cotton fabric is strong in hydrophobicity and has a certain washing durability, free of toxic and expensive fluorinated compound or solvent, wide in source of raw materials, certainly compatible with other textile finishing auxiliaries, and capable of being applied to the functionalized after-finishing field of the cotton fabric; the cotton fabric finishing method disclosed by the invention is simple, feasible, and suitable for large-scale application and promotion.

Description

technical field [0001] The invention relates to the technical field of textile finishing, in particular to a fluorine-free durable superhydrophobic cotton fabric finishing agent, and also to a method for finishing cotton fabric. Background technique [0002] The diversity of nature and the multifunctionality of organisms have always been the source of inspiration for scientific researchers. Many artificial materials are designed according to certain aspects of the function and structure of organisms. Superhydrophobic materials are a class of biomimetic materials with super water repellency developed in recent years. On the surface of superhydrophobic materials, the contact angle of more than 150° makes it difficult for water droplets to spread or wet the surface. Therefore, superhydrophobic materials can remain dry and clean after contact with water. This kind of materials has good application prospects in many fields such as textiles, electronic equipment, automobiles and ...

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 Patents(China)
IPC IPC(8): D06M11/79D06M11/77D06M13/425D06M101/06
Inventor 吴旭王正平钟细明陈景远赖阳鸿
Owner GUANGZHOU UNIVERSITY
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