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Preparation method of electrostatic spinning fibrous membrane

An electrospinning and fiber membrane technology, applied in the field of fiber filtration membrane preparation, can solve problems such as short contact time, poor water mineralization effect, and water pollution.

Inactive Publication Date: 2021-03-19
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

[0022] 1) Soak the polyester non-woven fabric in DMAc for 2 minutes.

[0023] 2) Preparation of spinning solution

[0024] Dissolve potassium chloride (KCl) and polyethylene glycol (PEG) in N,N-dimethylacetamide (DMAc), add polyethersulfone (PES) and medical stone (0.3 μm), at a certain temperature Stir and dissolve completely to obtain the spinning solution;

[0025] Wherein, the mass fractions of KCl, PEG, DMAc, PES and medical stone in the spinning solution are 2%, 2%, 83%, 10%, 3%;

[0026] 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 28°C, humidity 70%, positive high pressure 17KV, negative pressure 5KV, spinning solution speed 0.9mL / h, receiving roll speed 180rpm, receiving distance 10cm, needle swing speed 150cm / min, spinning After 2 hours, immerse in a coagulation ...

Embodiment 2

[0029] 1) Soak the polyester non-woven fabric in DMAc for 2 minutes.

[0030] 2) Preparation of spinning solution

[0031] Dissolve potassium chloride (KCl) in N,N-dimethylacetamide (DMAc), add polyethersulfone (PES) and medical stone (0.2 μm), stir at a certain temperature, and obtain spinning after the dissolution is complete. silk liquid;

[0032] Among them, the mass fractions of KCl, DMAc, PES, and medical stone in the spinning solution are 2%, 84%, 11%, and 3%;

[0033] 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 32°C, the humidity is 75%, the positive high pressure is 17KV, the negative pressure is 5KV, the liquid a speed is 1.2mL / h, the receiving roller speed is 200rpm, the receiving distance is 10cm, the needle swing speed is 160cm / min, and the ...

Embodiment 3

[0036] 1) Soak the nylon non-woven fabric in DMAc for 1 min.

[0037] 2) Preparation of spinning solution

[0038] 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;

[0039] Wherein, the mass fractions of LiCl, DMAc, PES and medical stone in the spinning solution are 3%, 80%, 12%, 5%;

[0040] 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 28°C, humidity 70%, positive high pressure 23KV, negative pressure 5KV, spinning solution speed 1.0mL / h, receiving roll speed 200rpm, receiving distance 15cm, needle swing speed 200cm / min, spinning After 1.5 hours, immerse in a coagulation bath (pure water, 45° C.) to solidify and form, take out and dry to obta...

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Abstract

The invention discloses a preparation method of an electrostatic spinning fibrous membrane. The preparation method is characterized by comprising the following steps: (1) preparing a spinning solution, namely dissolving polymer resin, an additive and a mineralizing material into a solvent to prepare the spinning solution; and (2) preparing an electrostatic spinning mineralized nanofiber membrane,namely mounting a substrate on a receiving device of electrostatic spinning equipment, defoaming the spinning solution obtained in the step (1), injecting the defoamed spinning solution into an electrostatic spinning device, carrying out electrostatic spinning and air curing, and carrying out curing forming in a coagulating bath to obtain the mineralized electrostatic spinning nanofiber membrane.The mineralization material is combined with the electrostatic spinning nanofibers, the specific surface area is increased, inflow water can be fully mineralized when passing through the membrane, andthe mineralization efficiency is improved; and the mineralized material is fixed on the nanofibers, so that the risk of falling off is avoided, and the drinking water is safer.

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): B01D67/00B01D71/26B01D71/34B01D71/42B01D71/64B01D71/68B01D71/72C02F1/44C02F1/68D04H1/4291D04H1/43D04H1/4318D01D5/00D04H1/4326D04H1/4334D04H1/435D04H1/728
CPCB01D67/0079B01D71/68B01D71/34B01D71/42B01D71/26B01D71/64B01D71/72C02F1/44C02F1/441C02F1/442C02F1/683D04H1/4326D04H1/43D04H1/4318D04H1/435D04H1/4291D04H1/4334D04H1/728D01D5/003D01D5/0092D01D5/0061
Inventor 黄衡刘戈陈承
Owner NINGBO FOTILE KITCHEN WARE CO LTD
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