Preparation method of electrostatic spinning mineralized nanofiber membrane

A nanofiber membrane and electrospinning technology, applied in fiber processing, textiles and papermaking, filament/thread forming, etc., can solve the problems of lack of mineralized water quality, poor water mineralization effect, and short contact time. Achieve the effect of improving mineralization efficiency, small pressure drop and high porosity

Active Publication Date: 2021-01-26
NINGBO FOTILE KITCHEN WARE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the use of the mineralized faucet, the contact time between the water and the faucet is short, resulting in poor water mineralization effect and failing to achieve the purpose of mineralized water quality; the existence of the mineralized water storage tank improves the mineralization effect by prolonging the water soaking time, However, the existence of storage tanks brings the risk of water pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 1) Soak the polyester non-woven fabric in N,N-dimethylacetamide (DMAc) for 2min.

[0022] 2) Preparation of spinning solution

[0023] Lithium chloride (LiCl) was dissolved in N,N-dimethylacetamide (DMAc) and dimethyl sulfoxide (DMSO), respectively, and polyethersulfone (PES), polyvinyl alcohol (PVA) and wheat Rice stone (0.2μm), stirred at a certain temperature, and the spinning solution is obtained after it is completely dissolved.

[0024] Among them, the mass fractions of LiCl, DMAc, and PES in liquid a are 1%, 88%, and 11%; the mass fractions of LiCl, DMSO, PVA, and medical stone in liquid b are 3%, 90%, 5%, and 2%. .

[0025] 3) After degassing the spinning solution prepared in step 2), place it in the electrospinning equipment, arrange the non-woven fabric on the receiving roll as a nanofiber receiver, and spin under the following conditions: electrospinning temperature The temperature is 30°C, the humidity is 65%, the positive high pressure is 22KV, the negat...

Embodiment 2

[0028] 1) Soak nylon non-woven fabric in N,N-dimethylacetamide (DMAc) for 1 min.

[0029] 2) Preparation of spinning solution

[0030] Dissolve lithium chloride (LiCl) in N,N-dimethylacetamide (DMAc), add polyethersulfone (PES) and medical stone (0.3μm), stir at a certain temperature, and obtain spinning solution.

[0031] Among them, the mass fractions of LiCl, DMAc, and PES in liquid a are 2%, 84%, and 14%; the mass fractions of LiCl, DMAc, PES, and medical stone in liquid b are 3%, 84%, 8%, and 5%. .

[0032] 3) After degassing the spinning solution prepared in step 2), place it in the electrospinning equipment, arrange the non-woven fabric on the receiving roll as a nanofiber receiver, and spin under the following conditions: electrospinning temperature The temperature is 26°C, the humidity is 70%, the positive high pressure is 25KV, the negative pressure is 5KV, the speed of liquid a is 0.88mL / h, the speed of liquid b is 0.8mL / h, the speed of the receiving roller is 12...

Embodiment 3

[0035] 1) Soak the polyester non-woven fabric in N,N-dimethylacetamide (DMAc) for 2min.

[0036] 2) Preparation of spinning solution

[0037] Potassium chloride (KCl) and polyethylene glycol (PEG) were dissolved in N,N-dimethylacetamide (DMAc) and dimethyl sulfoxide (DMSO), and polyethersulfone (PES), poly Vinyl alcohol (PVA) and medical stone (0.3μm) are stirred at a certain temperature, and the spinning solution is obtained after they are completely dissolved.

[0038] Wherein, the mass fractions of KCl, PEG, DMAc, PES in liquid a are 2%, 5%, 81%, 12%; the mass fractions of KCl, PEG, DMSO, PVA, medical stone in liquid b are 2%, 3%, %, 87%, 5%, 3%.

[0039] 3) After degassing the spinning solution prepared in step 2), place it in the electrospinning equipment, arrange the non-woven fabric on the receiving roll as a nanofiber receiver, and spin under the following conditions: electrospinning temperature The temperature is 26°C, the humidity is 70%, the positive high pressur...

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Abstract

The invention discloses a preparation method of an electrostatic spinning mineralized nanofiber membrane. The preparation method is characterized by comprising the following steps of (1) preparation of a spinning solution, wherein polymer resin and an additive are dissolved into a solvent to prepare a spinning solution A; polymer resin, an additive and a nanoparticle mineralized material are dissolved in a solvent to prepare a spinning solution B; and (2) preparation of the coaxial electrostatic spinning mineralized nanofiber membrane, wherein a substrate is mounted on a receiving device of electrostatic spinning equipment, the obtained spinning solution A and the spinning solution B are injected into an electrostatic spinning device respectively, the spinning solution A serves as a shelllayer and the spinning solution B serves as a core layer, coaxial electrostatic spinning and air curing are carried out, and curing forming is carried out in a coagulating bath to obtain the coaxial electrostatic spinning mineralized nanofiber membrane. The mineralized material and electrostatic spinning nanofibers are combined, the specific surface area is increased, inflow water can be fully mineralized when passing through the membrane, and the mineralization efficiency is improved.

Description

technical field [0001] The invention relates to a preparation method of a fiber filter membrane, which is applied to a water purification device. Background technique [0002] In order to improve water quality, the proportion of nanofiltration / reverse osmosis membrane filter elements in water purifiers continues to increase, resulting in the retention of a large amount of mineralized substances in water, which is not conducive to health. In order to mineralize the water quality, most of the current market uses mineralized faucets, mineralized water storage buckets and other methods to achieve the purpose of mineralized water. During the use of the mineralized faucet, the contact time between the water and the faucet is short, resulting in poor water mineralization effect and failing to achieve the purpose of mineralized water quality; the existence of the mineralized water storage tank improves the mineralization effect by prolonging the water soaking time, However, the exi...

Claims

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Application Information

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IPC IPC(8): D04H1/728D04H1/4382D04H1/76D04H3/02D04H3/005D04H3/073D01D5/00
CPCD04H1/728D04H1/4382D04H1/76D04H3/02D04H3/005D04H3/073D01D5/0076D01D5/0046D01D5/0069D10B2505/04
Inventor 黄衡陈承卜凡敏
Owner NINGBO FOTILE KITCHEN WARE CO LTD
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