Preparation method for water-repellent oil-repellent superhydrophobic fabric surface

A water-repellent, oil-repellent, super-repellent technology, applied in textiles, papermaking, fiber treatment, etc., can solve the problems of complex operation of water-repellent, oil-repellent and super-repellent surfaces, environmental pollution, etc., achieve good super-hydrophobicity, and simple and easy process The effect of mild operation and reaction conditions

Active Publication Date: 2015-01-21
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

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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  • Preparation method for water-repellent oil-repellent superhydrophobic fabric surface
  • Preparation method for water-repellent oil-repellent superhydrophobic fabric surface
  • Preparation method for water-repellent oil-repellent superhydrophobic fabric surface

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preparation example Construction

[0032] The invention provides a method for preparing the surface of a water-repellent and oil-repellent super-repellent fabric, comprising the following steps:

[0033] (1) weigh cotton fabric, prepare cotton cellulose macromolecular initiator under the effect of initiator, catalyzer;

[0034] (2) Graft monomer GMA on the cotton cellulose macroinitiator of above-mentioned preparation, reaction system vacuumizes nitrogen, obtains the cotton cellulose of grafting GMA, the cotton cellulose of the grafting GMA of gained is soaked in acid In solution, the epoxy groups on it are hydrolyzed to form a hydroxyl-rich cellulose surface; and

[0035] (3) The cotton cellulose grafted with GMA on the hydroxyl-rich cellulose surface prepared above undergoes an acylation reaction with a low surface energy monomer to obtain a water- and oil-repellent super-repellent surface.

[0036]In order to make the above objects, features and advantages of the present invention more comprehensible, the p...

Embodiment 1

[0053] In this embodiment, the water-repellent and oil-repellent super-repellent surface is prepared according to the following steps:

[0054] The first step, the preparation of cotton cellulose macromolecular initiator

[0055] The pretreatment of cotton fabrics in the experiment included soaping, ethanol ultrasonic cleaning for 20 minutes, THF ultrasonic cleaning for 10 minutes, and low temperature drying and cooling for later 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 add DMAP and triethylamine, cool the round-bottomed flask to 10°C in an ice bath, add the initiator 2-bromoisobutyryl bromide dropwise, then add the cotton fabric, react for 1 hour and then heat up to 30°C The reaction was continued for 24h, and the whole reaction was carried out under the stirring of the magnetic rotor. After the...

Embodiment 2

[0061] In this embodiment, the water-repellent and oil-repellent super-repellent surface is prepared according to the following steps:

[0062] The first step, the preparation of cotton cellulose macromolecular initiator

[0063] The pretreatment of cotton fabrics in the experiment included soaping, ethanol ultrasonic cleaning for 20 minutes, THF ultrasonic cleaning for 10 minutes, and low temperature drying and cooling for later 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 50mlTHF to the round bottom flask, Then add DMAP and triethylamine, cool the round-bottomed flask to 10°C in an ice bath, add the initiator 2-bromoisobutyryl bromide dropwise, then add the cotton fabric, and heat up to 30°C after reacting for 1 hour to continue The reaction was carried out for 24 hours, and the whole reaction was carried out under the stirring of the magne...

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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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-repellent and oil-repellent super-repellent surface on a fiber base, in particular to a preparation method for a water-repellent and oil-repellent super-repellent fabric surface. Background technique [0002] With the in-depth study of "lotus leaves" and "rose petals" in nature, super-hydrophobic surfaces have attracted widespread attention. The formation of super-hydrophobic surfaces is mainly controlled by two factors, one is surface roughness, and the construction of 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 and long silicon-carbon chain compounds. Generally speaking, the longer the fluorocarbon chain, the lower its surface energy, which is more conducive to the construction of fabrics with excellent water and oil repellency...

Claims

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Application Information

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Patent Type & Authority Applications(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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