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Method for preparing fluorine-free super-hydrophobic textile surface

A super-hydrophobic and fabric technology, applied in plant fibers, textiles, papermaking, fiber treatment, etc., can solve problems such as toxicity of fluorine compounds, expensive silane compounds, coating peeling off, etc., to achieve improved wettability, great application value, Effect of improving surface roughness

Active Publication Date: 2014-06-04
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Fluorine compounds are toxic and not suitable for skin-friendly materials such as textiles; silane compounds are expensive; the use of nanoparticles can easily cause coating peeling off

Method used

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  • Method for preparing fluorine-free super-hydrophobic textile surface
  • Method for preparing fluorine-free super-hydrophobic textile surface
  • Method for preparing fluorine-free super-hydrophobic textile surface

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] a), the first atomization treatment: cut the textile fabric into 1.5 cm x 1.5 cm for use. Weigh cerium ammonium nitrate (ACN) and dissolve in water to prepare 0.8wt% cerium ammonium nitrate (ACN) aqueous solution, get 5 milliliters of cerium ammonium nitrate (ACN) solution and pour it into the atomization cup for atomization treatment, the atomized cerium nitrate The ammonium (ACN) solution is sprayed out in the form of smoke, and the textile fabric is placed about 5 cm from the fog outlet for the first atomization treatment, which ends after about 2 minutes.

[0041] The role of ceric ammonium nitrate (ACN) is an initiator, because ceric ammonium nitrate (ACN) can oxidize groups such as hydroxyl groups into active species, and the active species triggers the polymerization of hydrophobic monomers, so that the polymer layer is directly connected to the cotton fiber matrix, which can No additional monomer was added as a fixative. In order to only generate active species...

Embodiment 2

[0049] a), atomization treatment for the first time: prepare 1.2wt% ceric ammonium nitrate (ACN) aqueous solution;

[0050] b) Preparation of fog polymerization solution: Lauryl methacrylate (LMA) was used as monomer, divinylbenzene was used as crosslinking agent, and octanol was used as solvent to prepare fog polymerization solution. Among them, the concentration of lauryl methacrylate (LMA) is 2.057mol / L, and the molar ratio of divinylbenzene to lauryl methacrylate (LMA) is 1:80~120, so the concentration of divinylbenzene is 17.1417 ~25.7125mmol / L;

[0051] c), atomize the polymerization solution; the range of spray treatment time is 10s~2min.

[0052] d) Initiate precipitation of polymerized droplets: the textile fabric treated with fog is placed in an oven at 80° C. for 10 hours.

[0053] All the other are identical with embodiment 1, obtain the lining with superhydrophobic characteristic on one side.

[0054] Tested by the same analysis method, the results show that la...

Embodiment 3

[0057] a) Prepare fog polymerization solution: use lauryl methacrylate (LMA) as monomer, ethylene glycol dimethacrylate (EGD) as crosslinking agent, and isocyanoethyl methacrylate (ICM) As a fixative, use dibenzoyl peroxide (BPO) as an initiator and ethanol as a solvent to prepare a mist polymerization solution. Among them, the concentration of lauryl methacrylate (LMA) is 0.17mol / L; the molar ratio of ethylene glycol dimethacrylate (EGD) to lauryl methacrylate (LMA) is 1:80~120, so, B The concentration of diol dimethacrylate (EGD) is 1.425~2.1375 mmol / L; isocyanoethyl methacrylate (ICM) is 3.4 mmol / L; the dibenzoyl peroxide (BPO) is 8.0 mmol / L.

[0058] b), atomized mist polymerization solution: take 5 milliliters of mist polymerization solution and put it into the atomization cup for atomization treatment, atomize the mist polymerization solution into tiny droplets with a particle size of 5 microns or less, and the atomized mist polymerization solution It is sprayed out i...

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Abstract

The invention provides a method for preparing a fluorine-free super-hydrophobic textile surface, belonging to the technical field of textile treatment. The method comprises the following steps: (a) preparing a fog polymerization solution, namely taking methacrylates or acrylic esters as monomers, taking divinyl benzene or ethylene glycol dimethyl acrylic ester as a cross-linking agent, taking methacryloyloxyethyl isocyanate as a curing agent and taking dibenzoyl peroxide as an initiator to prepare an organic solution; (b) atomizing the fog polymerization solution; and (c) initiating precipitation and polymerization of fog drops. According to the method provided by the invention, an atomized monomer solution and almost polymerized monomer fog drops are attached on the textile surface to control the use amount of the polymerized monomers, and the unattached fog drops can be repeatedly utilized. According to the method, the surface appearance of a coating is adjusted by selecting an organic solvent, the cross-linking agent and the concentration and the atomizing treatment time, and a nano structure of the surface is increased; the surface roughness can be improved without using inorganic nano grains.

Description

technical field [0001] The invention belongs to the technical field of fabric treatment, and in particular relates to a method for preparing the surface of a fluorine-free superhydrophobic fabric. Background technique [0002] Wettability is one of the important signs of a solid surface, which is determined by the chemical composition and microstructure of the surface. A material surface with a certain roughness and low surface energy can exhibit hydrophobicity. A superhydrophobic surface refers to a surface with a contact angle with water greater than 150°, which has excellent properties such as self-cleaning, low adhesion, low retardation, anti-reflection, and anti-fog. Superhydrophobic materials have great potential in industrial applications. [0003] Cotton fabric is a traditional clothing fabric. Its comfort, softness, wear resistance and good hygroscopicity and air permeability make cotton fabric still occupy an important place in the application of clothing, home te...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M14/04D06M23/06D06M101/06D06M101/08
Inventor 刘向东席光辉汪璐万顺彊
Owner ZHEJIANG SCI-TECH UNIV
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