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Preparation method of pressure-resistant washing-resistant super-hydrophobic fabric

A super-hydrophobic fabric technology, applied in animal fibers, plant fibers, textiles and papermaking, etc., can solve the problems of poor stability of super-hydrophobic fabrics and limit the practical application of super-hydrophobic fabrics, and achieve low cost, mild preparation conditions and simple process Effect

Inactive Publication Date: 2019-06-25
SHUBO SHANGHAI NANO TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

More importantly, the stability of the prepared superhydrophobic fabrics is still poor, especially the stability of pressure resistance and washing resistance, which seriously limits the practical application of superhydrophobic fabrics.

Method used

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  • Preparation method of pressure-resistant washing-resistant super-hydrophobic fabric

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preparation example Construction

[0017] (1) Preparation of pressure-resistant and washable superhydrophobic fabric

[0018] The method for preparing pressure-resistant and washable super-hydrophobic fabrics of the present invention is to disperse methacrylic resin and hydrophobic nanoparticles in a dispersant to form a composite emulsion with a concentration of 5-100 mg / mL, and then coat the composite emulsion by a dip coating method. Cover the surface of fabric fibers, and then heat and cure for 2 to 10 minutes to obtain a pressure-resistant and washable super-hydrophobic fabric.

[0019] Fabrics are polyester, cotton, wool, silk, acrylic, nylon, polyurethane and their blends.

[0020] Its specific preparation method comprises the following process steps:

[0021] (1) Preparation of methacrylic resin: Methyl methacrylate, butyl methacrylate and lauryl methacrylate are added to the aqueous solution that is dissolved with sodium lauryl sulfate and sodium persulfate, in React at 70-90°C for 1-8 hours; cool to...

Embodiment 1

[0037]Weigh 3.2g of methyl methacrylate, 2.6g of butyl methacrylate and 1.2g of dodecyl methacrylate into 80mL aqueous solution dissolved with 1.2g of sodium lauryl sulfate and 0.2g of sodium persulfate , and reacted at 80°C for 2 hours; cooled to room temperature to obtain a crude product; washed, filtered, and vacuum-dried at 50°C to obtain a methacrylic resin. Weigh 1.0 g of methacrylic resin and 0.2 g of hydrophobic silica nanoparticles, and disperse them in 50 mL of ethanol-water (1:1) at high speed to prepare a composite emulsion. Then immerse the 5cm×5cm polyester fabric in the composite emulsion and let it stand for 5 minutes, stirring 2 to 3 times during the period; finally remove the excess composite emulsion in the fabric by pressure filtration, and then heat-cure at 150°C for 3 minutes to obtain the resistant Pressure washable superhydrophobic polyester fabric. The evaluation results of the sample's superhydrophobicity, pressure resistance and stability are shown ...

Embodiment 2

[0039] Weigh 5.0g of methyl methacrylate, 1.2g of butyl methacrylate and 2.3g of dodecyl methacrylate into 120mL aqueous solution dissolved with 3.0g of sodium lauryl sulfate and 0.4g of sodium persulfate , reacted at 80° C. for 4 hours; cooled to room temperature to obtain a crude product; washed, filtered and then vacuum-dried at 50° C. to obtain a methacrylic resin. Weigh 1.0 g of methacrylic resin and 0.1 g of hydrophobic carbon nanotube nanoparticles, and disperse them in 50 mL of ethanol-water (1:1) at high speed to prepare a composite emulsion. Then immerse the 5cm×5cm cotton fabric in the composite emulsion and let it stand for 3 minutes, stirring 2 to 3 times during the period; finally remove the excess composite emulsion in the fabric by pressing filtration, and then heat-cure at 150°C for 4 minutes to obtain the pressure-resistant Washable superhydrophobic polyester fabric. The evaluation results of the sample's superhydrophobicity, pressure resistance and stabilit...

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Abstract

The invention discloses a preparation method of a pressure-resistant washing-resistant super-hydrophobic fabric, which comprises the following steps of: dispersing methacrylic resin and hydrophobic nanoparticles into a dispersant to prepare composite emulsion with a concentration of 5-100mg / mL; spreading the composite emulsion on the surface of fabric fibers by using a dip spreading method; and heating and curing for 2-10 minutes to obtain the pressure-resistant washing-resistant super-hydrophobic fabric. The super-hydrophobic fabric has excellent super-hydrophobicity (the contact angle is more than or equal to 155 degrees), pressure resistance (more than or equal to 4 levels) and water washing resistance (still super-hydrophobic after more than or equal to 50 times), and has wide application prospect in the fields of self-cleaning textiles, fibers and the like. The method cannot influence the inherent mechanical strength, hand feeling, luster and other properties of the fabric; and has the advantages of mild preparation conditions, simple process, lower cost and the like.

Description

technical field [0001] The invention relates to a preparation method of a pressure-resistant and washable super-hydrophobic fabric, in particular to a method for preparing a pressure-resistant and washable super-hydrophobic fabric by using a composite emulsion of methacrylic resin and hydrophobic nanoparticles. Background technique [0002] Inspired by the lotus leaf effect, superhydrophobic surfaces (the contact angle of water droplets on the surface > 150°) are developing rapidly, and have broad application prospects in self-cleaning surfaces, oil-water separation, anti-corrosion, and fluid drag reduction. However, the existing superhydrophobic surface preparation technology has problems such as poor stability and complicated and expensive preparation methods, which greatly limit its practical application. Poor stability is the fatal flaw of superhydrophobic surfaces. Slight scratches, abrasions or even touches will cause the material to lose superhydrophobicity. In ad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/263D06M11/79D06M11/74D06M11/46C08F220/14C08F220/18D06M101/32D06M101/06D06M101/10D06M101/30
Inventor 严杰张俊平赵林
Owner SHUBO SHANGHAI NANO TECH CO LTD
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