A method for preparing the surface of water-repellent and oil-repellent superphobic fabric

A water- and oil-repellent, super-hydrophobic technology, which is used in textiles, papermaking, and fiber processing. The effect of controllable properties and molecular weight

Active Publication Date: 2016-05-18
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for preparing the surface of a water-repellent and oil-repellent super-repellent fabric. The ATRP method is used to prepare a water-repellent and oil-repellent super-repellent surface on the fiber base, so as to solve the problem of complex operation and environmental impact of preparing the water-repellent and oil-repellent super-repellent surface. pollution and other issues

Method used

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  • A method for preparing the surface of water-repellent and oil-repellent superphobic fabric
  • A method for preparing the surface of water-repellent and oil-repellent superphobic fabric
  • A method for preparing the surface of water-repellent and oil-repellent superphobic fabric

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preparation example Construction

[0031] The present invention provides a method for preparing a surface of a water- and oil-repellent superphobic fabric, comprising the following steps:

[0032] (1) Weigh cotton fabrics, and prepare cotton cellulose macromolecular initiators under the action of initiators and catalysts;

[0033] (2) graft monomer GMA on the cotton cellulose macroinitiator prepared above, the reaction system is evacuated and fed with nitrogen to obtain the cotton cellulose of the grafted GMA, and the cotton cellulose of the obtained grafted GMA is soaked in acid In solution, the epoxy groups thereon undergo hydrolysis to form a hydroxyl-rich cellulose surface; and

[0034] (3) acylation reaction of GMA-grafted cotton cellulose on the surface of the hydroxyl-rich cellulose prepared above and low-carbon fluoride heptafluorobutyryl chloride or long-chain siloxane compound to obtain water- and oil-repellent superphobicity surface.

[0035]In order to make the above objects, features and advantag...

Embodiment 1

[0052] This embodiment prepares a water- and oil-repellent superphobic surface according to the following steps:

[0053] The first step, the preparation of cotton cellulose macroinitiator

[0054] The pretreatment of cotton fabrics in the experiment included soaping, ethanol ultrasonic cleaning for 20 min, THF ultrasonic cleaning for 10 min, and drying and cooling at low temperature for use. Weigh about 1g of cotton fabric, calculate the amount of each reagent according to the mass ratio m (cotton: 2-bromoisobutyryl bromide: DMAP: triethylamine) = 1:2:0.5:0.9, add 50ml THF to the round bottom flask, Then DMAP and triethylamine were added, the round-bottomed flask was cooled to 10°C in an ice bath, the initiator 2-bromoisobutyryl bromide was added dropwise, the cotton fabric was added, and the temperature was raised to 30°C after 1 h of reaction to continue The reaction was carried out for 24h, and the whole reaction was carried out under the stirring of a magnetic rotor. Af...

Embodiment 2

[0060] This embodiment prepares a water- and oil-repellent superphobic surface according to the following steps:

[0061] The first step, the preparation of cotton cellulose macroinitiator

[0062] The pretreatment of cotton fabrics in the experiment included soaping, ethanol ultrasonic cleaning for 20 min, THF ultrasonic cleaning for 10 min, and drying and cooling at low temperature for use. Weigh about 1g of cotton fabric, calculate the amount of each reagent according to the mass ratio m (cotton: 2-bromoisobutyryl bromide: DMAP: triethylamine) = 1:2:0.5:0.9, add 50ml THF to the round bottom flask, Then DMAP and triethylamine were added, the round-bottomed flask was cooled to 10°C in an ice bath, the initiator 2-bromoisobutyryl bromide was added dropwise, the cotton fabric was added, and the temperature was raised to 30°C after 1 h of reaction to continue The reaction was carried out for 24h, and the whole reaction was carried out under the stirring of a magnetic rotor. Af...

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Abstract

The invention discloses a preparation method for a water-repellent oil-repellent superhydrophobic fabric surface. The preparation method comprises the following steps: (1) weighing a cotton fabric, and preparing a cotton-cellulose macromolecular initiating agent under the action of the initiating agent and a catalyst; (2) grafting monomeric GMA on the prepared cotton-cellulose macromolecular initiating agent, vacuumizing a reaction system and introducing nitrogen, so as to obtain cotton cellulose grafted by the GMA, soaking the cotton cellulose grafted by the GMA in an acid solution, and hydrolyzing epoxy groups to form a cellulose surface rich in hydroxyl groups; and (3) performing acylation reaction between the cotton cellulose grafted by the GMA on the cellulose surface rich in hydroxyl groups and a monomer with low surface energy to obtain the water-repellent oil-repellent superhydrophobic surface. The preparation method is mild in reaction condition, simple, and easy to operate, can be realized at room temperature, and can guarantee the good superhydrophobicity and oil resistance without influencing of the comfort and the mechanical property of the cotton fabric.

Description

technical field [0001] The invention relates to a preparation method for constructing a water- and oil-repellent superphobic surface on a fiber base, in particular to a preparation method for a water- and oil-repellent superphobic fabric surface. Background technique [0002] With the in-depth study of "lotus leaves" and "rose petals" in nature, superhydrophobic surfaces have attracted widespread attention. The formation of superhydrophobic surfaces is mainly controlled by two factors, one is the surface roughness, the construction of the surface The essence of roughness is to build a secondary micro-nano structure; the second is the modification of low surface energy. At present, the most important thing is to use fluorine-containing, long silicon carbon chain compounds. Generally speaking, the longer the fluorocarbon chain, the lower the surface energy, which is more conducive to the construction of fabrics with excellent water and oil repellency properties. The currently...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M14/04D06M13/188D06M13/50
Inventor 赖跃坤李淑荟黄剑莹葛明政张克勤
Owner SUZHOU UNIV
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