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Non-woven fabric with nanoscale bulge structure and preparation method and application of non-woven fabric

A non-woven fabric and nanotechnology, applied in textiles and papermaking, chemical instruments and methods, fiber types, etc., can solve the problems of low wettability of polymer solutions, reduce backwashing time, reduce costs, and increase use efficiency Effect

Inactive Publication Date: 2015-04-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for the application of chemical fiber non-woven fabrics as its supporting substrate, the wettability of the polymer solution is low, and it is difficult to enter the nanopores in an effective time, so chemical fiber non-woven fabrics with nanoscale convex structures are needed To meet the requirements of improving the roughness of chemical fibers

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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1) Zinc nitrate (Zn(NO 3 ) 2 ·6H 2 O) and hexamethylenetetramine (C 6 h 12 N 4 ) is dissolved in water in an equal ratio, and prepared as a reaction solution according to 0.1 mol / L of zinc nitrate and placed in a reactor. Take the polypropylene non-woven and arrange it in the reactor, because the hexamethylenetetramine is hydrolyzed first to generate NH3, and then NH3 is hydrolyzed again to generate OH － , while OH － with Zn in zinc nitrate 2+ The reaction produces Zn(OH) 2 , Zn(OH) 2 ZnO is formed after dehydration. Due to the anisotropic growth of ZnO crystals, most of them preferentially grow into nanorods along the c-axis direction, forming ZnO nanorod arrays. After processing in the reaction furnace, take it out and wash it with water. At this time, the polypropylene non-woven fabric already has a nano-projection structure of ZnO. The specific surface area of ​​the prepared polypropylene non-woven fabric is 22.1m 2 / g.

[0026] 2) Configure ultrafiltr...

Embodiment 2

[0031] 1) Weigh 11.4g of ammonium persulfate and dissolve it in 50mL of 1mol / L hydrochloric acid aqueous solution (move to the back). Take 3.7mL of aniline, 50mL of 1mol / L hydrochloric acid aqueous solution, 50ml of polyvinylpyrrolidone and 50mL of distilled water to make a mixed solution, and electromagnetically stir it in an ice-water bath. Dip the polyester non-woven fabric washed with distilled water into the mixed solution, and keep the temperature stable at around 0°C; add ammonium persulfate hydrochloric acid solution dropwise, and the polymerization reaction begins. After 10 minutes, take out the polyester non-woven fabric, wash it with 1mo / L hydrochloric acid aqueous solution, remove the reactants adhering to the surface of the polyaniline film, and air dry it. At this time, the surface of the polyester non-woven fabric already has a nano-protrusion structure of polyaniline. The specific surface area of ​​the prepared polyester non-woven fabric is 132.6m 2 / g.

[0...

Embodiment 3

[0038] 1) Preparation of TiO by hydrolysis of tetra-n-butyl titanate 2 , the chemical fiber non-woven fabric is ultrasonically cleaned with deionized water, acetone, and isopropanol in a mixed solution of 1:1:1 by volume for 30 minutes; each 30ml of hydrochloric acid and deionized water is injected into a clean beaker, sealed, Put it on a constant temperature magnetic stirrer and stir for 5 minutes, and take 1ml of tetra-n-butyl titanate liquid with a syringe and add it dropwise. Stir magnetically for 15 minutes to make it evenly mixed; put the sample into a reaction kettle lined with polytetrafluoroethylene, inject 15ml of the prepared solution into the reaction kettle; put the reaction kettle into an oven, and set the temperature to 150 °C, the time is set to 13h; after that, the acrylic non-woven fabric is taken out from the reaction kettle, rinsed with deionized water, and dried. At this time, the surface of the acrylic non-woven fabric already has TiO 2 nanoprotrusion str...

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 relates to a non-woven fabric. A nano bulge structure is formed in the surface of the non-woven fabric, and is at least one of a spherical bulge, a conical bulge, a rod-link bulge, a rectangular bulge, a needle-shaped bulge and a fibrous bulge, wherein the mean diameter of the bulge structure is 1-100nm, and the length of the bulge is 10-1,000nm. The invention further provides a method for preparing the non-woven fabric. The method comprises the following steps: (i) providing a reactor, and putting raw materials for preparing a nano material into the reactor; (ii) putting a to-be-processed non-woven fabric into the reactor, and beginning to react; and (iii) taking out the non-woven fabric from the reactor after reacting, and processing to obtain the non-woven fabric with the nano bulge structure on the surface. The invention further provides a separating membrane and a preparation method of the separating membrane.

Description

technical field [0001] The invention relates to the field of non-woven fabrics, in particular to a chemical fiber non-woven fabric with nanoscale convex structures and applications thereof. Background technique [0002] With the rapid development of my country's industrialization, the situation of water resources is becoming more and more polluted. The scarcity of water resources and the increasingly serious water pollution have become the bottleneck restricting my country's social progress and economic development. Membrane water treatment technology is the solution to resource-based water shortage and water quality As an important technology for water shortage, the development of high-performance membrane materials has been highly valued worldwide. Many governments have researched and developed membrane technology as a high-tech in the 21st century, formulated corresponding research and development plans, and promoted membrane technology and industry. strong development. At...

Claims

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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M11/44D06M15/37D06M11/46D06M15/59B01D69/12B01D69/10B01D67/00D06M101/20D06M101/32D06M101/28
Inventor 严昊刘轶群潘国元张杨郭敏
Owner CHINA PETROLEUM & CHEM CORP
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