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Method for preparing super-hydrophobic textiles through fiber surface polymerization modification

A fiber surface, super-hydrophobic technology, applied in the field of preparation of functional textiles, can solve the problems of high hazards for operators, weak force, and harsh equipment requirements

Inactive Publication Date: 2015-07-22
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The superhydrophobic textiles prepared by the above method have poor durability due to the weak force between the hydrophobic substance and the fiber, and the practical application is limited.
Li Jingye et al. used gamma ray radiation method to graft acrylate monomers to the surface of the fabric, and prepared wear-resistant, washable, and stable superhydrophobic textiles (Chinese patent CN 102174737 A, Chinese patent CN 102277741A). Equipment requirements are harsh, and gamma radiation is harmful to operators

Method used

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  • Method for preparing super-hydrophobic textiles through fiber surface polymerization modification

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Step 1: Activate the surface of the fiber: place the polyester fabric (15cm x 25cm) in deionized water and 25g / L NaOH solution successively, wash at 80°C for 30min, then wash with dilute hydrochloric acid, deionized water and acetone for several times Once, dry at 80°C.

[0033] Step 2: Fix the initiator: Put the activated polyester fabric into a dyeing cup containing only 0.01mL 2-bromoisobutyryl bromide, heat it at 70°C for 90min, then take it out, and wash it with absolute ethanol and deionized water successively Wash several times and dry at 80°C.

[0034]Step 3: Hydrophobic modification of the fiber surface by in-situ polymerization: put the polyester immobilized with the initiator into 0.005g of CuBr, 0.005g of bipyridine, 0.04g of glucose, 60mL of tetrahydrofuran, and 0.01mL of ethyl 2-bromoisobutyrate , 8mL of a mixture of 2,2,2-trifluoroethyl methacrylate monomers, sealed, and reacted at 60°C for 8 hours. After taking it out, wash it successively with tetrahyd...

Embodiment 2

[0037] Step 1: Activate the surface of the fiber: place the polyester fabric (15cm x 25cm) in deionized water and 25g / L NaOH solution successively, wash at 80°C for 30min, then wash with dilute hydrochloric acid, deionized water and acetone for several times Once, dry at 80°C.

[0038] Step 2: Fix the initiator: Put the activated polyester fabric into a dyeing cup containing only 0.01mL 2-bromoisobutyryl bromide, heat it at 70°C for 90min, then take it out, and wash it with absolute ethanol and deionized water successively Wash several times and dry at 80°C.

[0039] Step 3: Hydrophobic modification of the fiber surface by in-situ polymerization: put the polyester with the initiator fixed in 0.005g of CuBr, 0.025g of bipyridine, 0.01g of glucose, 60mL of tetrahydrofuran, and 0.01mL of ethyl 2-bromoisobutyrate , 8mL 2,2,2-Trifluoroethyl methacrylate monomer mixture, sealed, and reacted at 60°C for 5h, after taking it out, wash it successively with tetrahydrofuran, absolute eth...

Embodiment 3

[0042] Step 1: Activate the surface of the fiber: place the polyester fabric (15cm x 25cm) in deionized water and 25g / L NaOH solution successively, wash at 80°C for 30min, then wash with dilute hydrochloric acid, deionized water and acetone for several times Once, dry at 80°C.

[0043] Step 2: Fix the initiator: Put the activated polyester fabric into a dyeing cup containing only 0.01mL 2-bromoisobutyryl bromide, heat it at 90°C for 90min, then take it out, and wash it with absolute ethanol and deionized water successively Wash several times and dry at 80°C.

[0044] Step 3: Hydrophobic modification of the fiber surface by in-situ polymerization: put the polyester immobilized with the initiator into a solution containing 0.003g of CuBr, 0.009g of bipyridine, 0.06g of glucose, 60mL of tetrahydrofuran, and 0.01mL of ethyl 2-bromoisobutyrate , 8mL of a mixture of 2,2,2-trifluoroethyl methacrylate monomers, sealed, and reacted at 50°C for 8 hours. After taking it out, wash it suc...

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Abstract

The invention relates to a method for preparing functional textiles, belongs to the field of material surface graft modification, and provides a method for preparing super-hydrophobic textiles through fiber surface polymerization modification. The method comprises steps as follows: polyester fibers are washed with alkali, bromo-initiators are fixed on surfaces of the polyester fibers, then metacrylic acid ester monomers are grafted onto polyester surfaces with an SI-ATRP (surface-initiated atom transfer radical polymerization) method, and macromolecular polymer hydrophobic layers are formed on the surfaces of the fibers, so that the super-hydrophobic polyester textiles are obtained. Contact angles of the polyester textiles prepared with the method and water drops are larger than 150 degrees, and the polyester textiles are stable to acid, alkali, salts and solvents, wear-resistant and washable and have good hydrophobic stability.

Description

technical field [0001] The invention relates to a method for preparing functional textiles, in particular to a method for preparing superhydrophobic textiles through polymerization modification on the surface of fibers. Background technique [0002] Textiles are cheap, easy to obtain, easy to color, and can be produced on a large scale. Endowing textiles with superhydrophobicity can broaden their application fields, such as self-cleaning materials, waterproof materials, and oil-water separation materials. Superhydrophobic textiles have special wettability, that is, the contact angle of water droplets on the surface of the fabric is greater than 150°, and it is easy to roll on its surface. The water droplets will take away the dirt on the surface during the rolling process, which is the so-called "lotus leaf self-cleaning effect". Superhydrophobic polyester textiles not only have important applications in industrial, medical, and military products, but also are widely used i...

Claims

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Application Information

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IPC IPC(8): D06M14/14
Inventor 薛朝华郭小静贾顺田
Owner SHAANXI UNIV OF SCI & TECH
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