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Superhydrophobic fabric or nonwoven fabric and preparation method thereof

A non-woven, super-hydrophobic technology, applied in textiles, papermaking, fiber processing, etc., can solve the problems of intolerance to washing, short duration of modification effect, complicated preparation process of super-hydrophobic fabrics or non-woven fabrics, etc. economic effect

Inactive Publication Date: 2011-12-14
SHANGHAI INST OF APPLIED PHYSICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to overcome the defects of the existing super-hydrophobic fabric or non-woven fabric such as complex preparation process, short duration of modification effect, and inability to wash, and to provide a washing-resistant and permanent super-hydrophobic fabric. Fabric or non-woven fabric, and preparation method thereof

Method used

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  • Superhydrophobic fabric or nonwoven fabric and preparation method thereof
  • Superhydrophobic fabric or nonwoven fabric and preparation method thereof
  • Superhydrophobic fabric or nonwoven fabric and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The preparation of embodiment 1 superhydrophobic PET fabric (fabric 1)

[0029] The PET (weight-average molecular weight=300,000) fabric was ultrasonically cleaned in ethanol and water for 3 minutes, and then vacuum-dried at 60° C. to constant weight. Put 5g of PET fabric into a container containing 2% (w / w) fluorine-containing monomer (CH 2 =CHC(O)OCH 2 CH 2 (CF 2 ) 4 F) in a glass Erlenmeyer flask of 100mL methanol solution, after being airtight with nitrogen for 10min, in 60 After irradiating 5kGy in the cobalt source, the fabric was taken out and extracted in a Soxhlet extractor with butanone as a solvent for 72 hours, then vacuum-dried at 60°C to constant weight, and the grafting rate of fluorine-containing monomer was 15%.

[0030] The obtained superhydrophobic PET fabric was washed 50 times according to AATCC test method 61-2003, and the contact angle of water on the fabric surface before and after washing was measured (each sample was measured at least 8 ti...

Embodiment 2

[0035] The preparation of embodiment 2 superhydrophobic cotton fabrics (fabric 2)

[0036] Cotton fabrics were ultrasonically cleaned in ethanol and water for 3 min, and then vacuum-dried at 60 °C to constant weight. Put 5g of cotton fabric into a container containing 0.5% (w / w) fluorine-containing monomer (CH 2 =C(CH 3 )C(O)OCH 2 (CF 2 ) 8 F) In the glass Erlenmeyer flask of 100mL methanol solution, after being airtight with nitrogen for 20min, in 60 After irradiating 25kGy in the cobalt source, the fabric was taken out and extracted in a Soxhlet extractor for 72 hours with methyl ethyl ketone as a solvent, then vacuum-dried at 60°C to constant weight, and the grafting rate of fluorine-containing monomer was 12%.

[0037]The obtained superhydrophobic cotton fabric was washed 50 times according to AATCC test method 61-2003, and the contact angle of water on the surface of the fabric before and after washing was measured (each sample was measured at least 8 times at differ...

Embodiment 3

[0041] The preparation of embodiment 3 superhydrophobic polypropylene fabric (fabric 3)

[0042] Hydrophobic polypropylene (weight-average molecular weight = 400,000) fabrics were ultrasonically cleaned in ethanol and water for 3 minutes, and then vacuum-dried at 60 degrees Celsius to constant weight. Put 5g of polypropylene fabric into a container containing 10% (w / w) fluorine-containing monomer (CH 2 =C(CN)C(O)OCH 2 (CF 2 ) 6 F) In the glass Erlenmeyer flask of 100mL methanol solution, after passing nitrogen gas for 30min and sealing, in 60 After irradiating 50kGy in the cobalt source, the fabric was taken out and extracted in a Soxhlet extractor with butanone as a solvent for 72 hours, then vacuum-dried at 60 degrees Celsius to constant weight, and the grafting rate of fluorine-containing monomer was 23.4%.

[0043] The prepared superhydrophobic polypropylene fabric was washed 50 times according to AATCC test method 61-2003, and the contact angle of water on the surface...

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 provides a preparation method of a super-hydrophobic fabric or a super-hydrophobic non-woven fabric. The preparation method comprises the steps of: mixing a fabric containing C-H bonds or a non-woven fabric containing C-H bonds with an alcohol solution of a monomer containing fluorine, and performing a radiation grafting reaction at an anaerobic condition so as o obtain a super-hydrophobic fabric or a super-hydrophobic non-woven fabric, wherein the monomer containing fluorine is a compound shown in general formula (1) in which X represents hydrogen, fluorine, chlorine, bromine, iodine, methyl or cyan, Y represents O or NH, m represents 1-10 and n represents 1-10. The invention further discloses a super-hydrophobic fabric or a super-hydrophobic non-woven fabric prepared by the method. The super-hydrophobic fabric and the super-hydrophobic non-woven fabric disclosed by the invention overcome the defects that the existing super-hydrophobic fabric or super-hydrophobic non-woven fabric is complex to prepare in technique, has short modification effect duration time and is not washing-durable, so the super-hydrophobic fabric or the super-hydrophobic non-woven fabric disclosed by the invention is a fabric or a non-woven fabric which has washing fastness, is foldable and has permanent super hydrophobicity.

Description

technical field [0001] The invention relates to a superhydrophobic fabric or a superhydrophobic nonwoven fabric, and also relates to a preparation method of the hydrophobic fabric or a superhydrophobic nonwoven fabric. Background technique [0002] Superhydrophobic surface has a wide range of application prospects, and has become a hot spot in material research in recent years. Many different preparation materials and process methods have been developed; through model analysis, the relationship between surface microstructure and contact angle, hysteresis, and wetting state There is also a deeper understanding, which provides a certain theoretical guidance for the preparation of materials with special surface wettability. [0003] However, the practical application of superhydrophobic surfaces has not yet been popularized, and many problems still need to be solved urgently. First, a simple and environmentally friendly preparation method needs to be developed. In the prepara...

Claims

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Application Information

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IPC IPC(8): D06M14/18
Inventor 李景烨邓波蔡仁于洋李林繁虞鸣
Owner SHANGHAI INST OF APPLIED PHYSICS - CHINESE ACAD OF SCI
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