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Super-hydrophobic splinter-type superfine fiber nonwoven fabric and preparation method thereof

A super-hydrophobic split-type, ultra-fine fiber technology, applied in the directions of non-woven fabrics, fiber types, fiber processing, etc., to achieve the effects of mild conditions and simple preparation methods and processes

Inactive Publication Date: 2020-08-07
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcomings of using organic fluorine as raw material in the existing super-hydrophobic surface preparation method, to provide a super-hydrophobic split type ultra-fine fiber nonwoven fabric and its preparation method

Method used

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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  • Super-hydrophobic splinter-type superfine fiber nonwoven fabric and preparation method thereof
  • Super-hydrophobic splinter-type superfine fiber nonwoven fabric and preparation method thereof
  • Super-hydrophobic splinter-type superfine fiber nonwoven fabric and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] A kind of preparation method of superhydrophobic slit type microfiber nonwoven fabric, preparation steps are as follows:

[0048] 1) The split-type fiber with 50% nylon and 50% polyester content is made into split-type ultra-fine fiber nonwoven fabric by needle punching method, and the split-type ultra-fine fiber non-woven fabric is arranged in a mixed solution, and treated at 60 ° C for 200 minutes to complete Alkali reduction treatment;

[0049] Wherein, in the mixed solution, the concentration of sodium hydroxide is 5g / L, and the concentration of dodecyl dimethyl benzyl ammonium chloride is 2g / L;

[0050] 2) Arrange the ultrafine fiber nonwovens that have completed the alkali reduction treatment in the mixed solution, and react at 30°C for 30h;

[0051] In the mixed solution, the mass percentage of medium strong acid is 3%, and the mass percentage of formaldehyde is 3%;

[0052] 3) Arranging the microfiber nonwovens obtained in step 2) in diisocyanate, and reacting a...

Embodiment 2

[0060] A kind of preparation method of superhydrophobic slit type microfiber nonwoven fabric, preparation steps are as follows:

[0061] 1) The split-type fiber with 30% nylon and 70% polyester content is made into a split-type superfine fiber nonwoven fabric by needle punching, and the split-type superfine fiber nonwoven is arranged in a mixed solution, and treated at 100°C for 20 minutes, and the completion Alkali reduction treatment;

[0062] In the mixed solution, the concentration of sodium hydroxide is 50g / L, the concentration of potassium hydroxide is 5g / L, and the concentration of ethylenediamine is 10g / L;

[0063] 2) Arrange the ultrafine fiber nonwovens that have completed the alkali reduction treatment in the mixed solution, and react at 80°C for 15h;

[0064] In the mixed solution, the mass percentage of medium strong acid is 10%, and the mass percentage of formaldehyde is 5%;

[0065] 3) Arrange the non-woven microfibers obtained in step 2) in 4,4'-dicyclohexylm...

Embodiment 3

[0068] A kind of preparation method of superhydrophobic slit type microfiber nonwoven fabric, preparation steps are as follows:

[0069] 1) The split-type fibers with 40% nylon and 60% polyester content are made into split-type superfine fiber nonwoven fabrics by needle punching or spunlace, and the split-type superfine fiber nonwovens are arranged in a mixed solution. ℃ treatment for 150min to complete the alkali reduction treatment;

[0070] Wherein, in the mixed solution, the concentration of sodium hydroxide is 25g / L, the concentration of potassium hydroxide is 10g / L, and the concentration of urea is 5g / L;

[0071] 2) Arrange the ultrafine fiber nonwovens that have completed the alkali reduction treatment in the mixed solution, and react at 30-100°C for 3-30h;

[0072] In the mixed solution, the mass percentage of medium strong acid is 20%, and the mass percentage of formaldehyde is 15%;

[0073] 3) Arranging the microfiber nonwovens obtained in step 2) in 4,4'-dicyclohe...

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Abstract

The invention discloses a super-hydrophobic splinter-type superfine fiber nonwoven fabric and a preparation method thereof, and belongs to the technical field of super-hydrophobic textiles. Accordingto the preparation method, a super-hydrophobic fabric is prepared by using a splinter-type superfine fiber nonwoven fabric as a base material, and through a mixed base, a nano-rough structure is generated on the surface of polyester fibers and a large amount of hydroxyl and carboxyl groups are generated on the polyester superfine fibers; then while hydroxyl is introduced into the modification of the surface of nylon fibers by mixed acid, a nano-rough structure be can constructed, and then an isocyanate group is used to covalently graft long-chain alkane with low surface energy on the surfacesof the polyester fibers and the nylon fibers through the reaction activity of the isocyanate and an active hydrogen group to obtain the super-hydrophobic splinter-type superfine fiber non-woven fabricwith stable properties; and the preparation method is simple in process and mild in conditions, fluorine substances are not used as raw materials, and the preparation method is economical and environmentally friendly.

Description

technical field [0001] The invention belongs to the technical field of super-hydrophobic textiles, in particular to a super-hydrophobic split-type ultrafine fiber nonwoven fabric and a preparation method thereof. Background technique [0002] The superhydrophobic surface is mainly that water droplets form a contact angle of more than 150° on the surface and a rolling angle of less than 10°. Due to its excellent self-cleaning ability and good hydrophobicity, superhydrophobic surfaces have a wide range of use values, and are widely used in many fields such as oil-water separation, anti-icing, and metal anti-corrosion. [0003] The preparation of super-hydrophobic surface on textiles can improve the application value of textiles, enhance the grade and added value of textiles. Textiles with super-hydrophobic surfaces have important applications in industrial and military products, and are also widely used in daily life. Such as "waterproof clothing, umbrellas, waterproof tents,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/4334D04H1/435D04H1/4382D04H1/46D04H1/492D04H3/009D04H3/011D04H3/105D04H3/11D06M11/38D06M13/463D06M13/395D06M13/328D06M13/332D06M13/127D06M13/432D06M13/188D06M101/32D06M101/34
CPCD04H1/4334D04H1/435D04H1/4382D04H1/46D04H1/492D04H3/009D04H3/011D04H3/105D04H3/11D06M11/38D06M13/127D06M13/188D06M13/328D06M13/332D06M13/395D06M13/432D06M13/463D06M2101/32D06M2101/34D06M2200/12
Inventor 马兴元何远鑫郑四龙
Owner SHAANXI UNIV OF SCI & TECH
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