Supersonic wave technology-based hollow fiber film preparation method

An ultrasonic and fiber membrane technology, applied in the field of hollow fiber membrane preparation, can solve the problems of few researches on the membrane preparation process, achieve high practical application value, improve the pore structure, promote the effect of pore formation and pore preservation

Active Publication Date: 2014-11-05
BEIJING E & E TECH
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  • Abstract
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Problems solved by technology

In recent years, with the increasing development and maturity of ultrasonic technology, it has been widely studied and discussed in the membrane cleaning of the membrane industry, but there is still little research on the membrane preparation process.

Method used

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  • Supersonic wave technology-based hollow fiber film preparation method

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Embodiment Construction

[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0021] like figure 1 Shown: a method for preparing a hollow fiber membrane based on ultrasonic technology according to an embodiment of the present invention, the steps of which include: S1: preparing a spinning stock solution, dissolving a polymer resin, a hydrophilic agent, a thickener, an additive, and a non-solvent In a solvent, it is prepared into a spinning stock solution; S2: The spinning stock solution is degassed to make a spinning stock solution; S3: The spinning stock solution is pressed into the spinneret to be sprayed out, and then passed through a 20-200mm air bath Step by step, enter the first-level ultrasonic coagulation bath, the second-level ultrasonic coagulation bath, the third-level ultrasonic coagulation bath, the fourth-level ultrasonic coagulation bath, the fifth-level ultrasonic coagulation bath and the sixth-level ultras...

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Abstract

The invention relates to a supersonic wave technology-based hollow fiber film preparation method. The preparation method comprises the following steps of S1, dissolving a polymer resin, a hydrophilc agent, a thickener, an additive and a nonsolvent in a solvent to obtain a spinning stoste, S2, carrying out deaeration treatment on the spinning stoste to obtain a spinning material liquid, S3, pressing the spinning material liquid into a spinning jet, carrying out spraying, carrying out 20-200mm air bath treatment, and stepwise feeding the sprayed materials into all levels of ultrasonic coagulation bathes for curing molding of a primary hollow fiber film, S4, treating the primary hollow fiber film by a washing tank, carrying out glycerin hole-retaining treatment, and winding the primary hollow fiber film on a wire winding wheel, and S5, cutting off the primary hollow fiber film on the wire winding wheel, tidily binding the primary hollow fiber film, putting it into a drying room and carrying out drying. The invention provides the supersonic wave technology-based hollow fiber film preparation method. The supersonic wave technology-based hollow fiber film preparation method improves hollow fiber film pore-forming efficiency, shortens spinning time and improves generation efficiency.

Description

technical field [0001] The invention relates to a method for preparing hollow fiber membranes based on ultrasonic technology. Background technique [0002] Membrane separation is a new separation technology that appeared in the early 20th century and rose rapidly after the 1960s. Membrane separation technology has been widely used in food, medicine, biology, environmental protection, etc. , chemical industry, metallurgy, energy, petroleum, water treatment, electronics, bionics and other fields have produced huge economic and social benefits, and have become one of the most important means in today's separation science. Compared with the traditional separation process, membrane separation has the advantages of being carried out at room temperature, no phase change, no chemical change, good selectivity, strong adaptability, and low energy consumption. [0003] At present, polymer separation membranes have been widely used in industry, mainly including microfiltration membran...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D67/00B01D69/08B01D71/34B01D71/68
Inventor 李亚静张勇军王爱胜刘洁王献德杨国庆陈卫文张玉亮裴志强
Owner BEIJING E & E TECH
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