Superhydrophobic fabric or superhydrophobic non-woven fabric and preparation method thereof

A super-hydrophobic and non-woven fabric technology, which is applied in textiles, papermaking, fiber treatment, etc., can solve the problems of complex preparation process of super-hydrophobic fabrics or super-hydrophobic non-woven fabrics, short duration of modification effect, and inability to wash. Achieve the effect of avoiding large-scale equipment, good market prospects and low prices

Inactive Publication Date: 2011-09-07
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

[0005] The technical problem to be solved by the present invention is to overcome the defects of existing super-hydrophobic fabrics or super-hydrophobic non-woven fabrics such as complex preparation process, short duration of modification effect, not washing resistance, certain toxicity and high cost, and provide a durable Fabric or non-woven fabric with permanent superhydrophobicity, and method for its preparation

Method used

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  • Superhydrophobic fabric or superhydrophobic non-woven fabric and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The preparation of embodiment 1 superhydrophobic PET fabric (fabric 1)

[0031] 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 PET fabric into the container containing long chain alkane monomer (CH2 =CHC(O)O(CH 2 ) 10 CH 3 ) of ethanol solution 100mL (the concentration of the monomer in the ethanol solution containing the monomer is 2wt%) glass Erlenmeyer flask, nitrogen gas 10min after airtight, in 60 After irradiating 5kGy in the Co cobalt source, the fabric was taken out and extracted in a Soxhlet extractor for 72 hours with methyl ethyl ketone as a solvent, and then vacuum-dried to constant weight at 60°C to obtain a superhydrophobic PET fabric (fabric 1), which contained The grafting ratio of long-chain alkane monomer was 11.3%.

[0032] After the prepared fabric 1 was washed 50 times according to AATCC test method 61-2003, the c...

Embodiment 2

[0037] The preparation of embodiment 2 superhydrophobic cotton fabrics (fabric 2)

[0038] The cotton fabrics were ultrasonically cleaned in ethanol and water for 3 minutes, and then vacuum-dried at 60 °C to constant weight. 5g cotton fabric is put into containing long-chain alkane monomer (CH 2 =C(CH 3 )C(O)O(CH 2 ) 17 CH 3 ) of methanol solution 100mL (the concentration of the monomer in the methanol solution containing the monomer is 10wt%) glass Erlenmeyer flask, nitrogen gas 20min after airtight, 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 to constant weight at 60°C to obtain a superhydrophobic cotton fabric (fabric 2), which contained The graft ratio of long-chain alkane monomer is 22.0%.

[0039] Test the contact angle of fabric 2, and the test method is the same as that in Example 1. The measurement results show that the ave...

Embodiment 3

[0042] The preparation of embodiment 3 superhydrophobic polypropylene fabric (fabric 3)

[0043] 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° C. to constant weight. Put 5g polypropylene fabric into the container containing long chain alkane monomer (CH 2 =C(CH 3 )C(O)O(CH 2 ) 16 CH 3 ) of ethanol solution 100mL (the concentration of the monomer in the ethanol solution containing the monomer is 50wt%) glass Erlenmeyer flask, nitrogen gas 30min after airtight, in 60 After irradiating 50kGy in the Co 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 to obtain a superhydrophobic polypropylene fabric (fabric 3), which contained The grafting rate of long-chain alkane monomer is 37.4%.

[0044] The contact angle of the prepared fabr...

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Abstract

The invention provides a preparation method of a superhydrophobic fabric or superhydrophobic non-woven fabric, which comprises the following step of: enabling a fabric containing C-H bonds or a non-woven fabric containing C-H bonds to be subjected to irradiation grafting reaction with a monomer containing long-chain alkane, thus obtaining the superhydrophobic fabric or superhydrophobic non-woven fabric, wherein the monomer containing long-chain alkane is a compound as shown in general formula (1), X is hydrogen or methyl, and n is 10-17, preferably 13-17. The invention overcomes the defects that the existing preparation process of the superhydrophobic fabric or non-woven fabric is complicated, the duration time of the modification effect is short, and the superhydrophobic fabric or non-woven fabric is intolerant of washing, is of certain toxicity, is high in cost and the like, thereby providing a washing-resistant permanent superhydrophobic fabric or non-woven fabric and a preparationmethod thereof. Since the used monomer is a non-fluorine monomer having the advantages of low toxicity, low cost and the like, the invention is beneficial to large-scale industrial production. The general formula (1) is shown in the specification.

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 means that the contact angle of water on the surface of the material exceeds 150 degrees. The leaves and petals of many plants, the wings of insects, and the feathers of birds are all natural superhydrophobic materials, which is an interesting phenomenon in nature. Studies have shown that the surface of superhydrophobic materials not only has low surface energy, but also has a rough structure on a micro-nano scale. According to this mechanism, people began to prepare artificial superhydrophobic materials, especially superhydrophobic textiles, which are breathable and waterproof, and are expected to be applied in many fields. However, the stability of superhydrophobic textiles prepared by conventional methods, esp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M14/18
Inventor 李景烨邓波李林繁虞鸣蒋海青于洋
Owner SHANGHAI INST OF APPLIED PHYSICS - CHINESE ACAD OF SCI
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