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Polyacrylonitrile based ultrafiltration membrane material with high throughput and preparation method thereof

A polyacrylonitrile, ultrafiltration membrane technology, applied in chemical instruments and methods, membrane technology, semi-permeable membrane separation, etc., can solve problems such as low water flow and reduced ultrafiltration membrane efficiency

Inactive Publication Date: 2012-10-17
CSR QINGDAO HUAXUAN WATER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the water flow rate of the existing polyacrylonitrile ultrafiltration membrane is relatively low, generally hovering around 200 L / m2·h, which reduces the efficiency of this type of ultrafiltration membrane

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The high-flux ultrafiltration membrane material based on polyacrylonitrile of the present embodiment, the parts by weight of its components are: polyacrylonitrile (Shanghai Jinshan Chemical Factory), 25 parts; dimethylacetamide solvent (Tianjin Bo Di Chemical Co., Ltd.), 55 parts; polyethylene glycol (PEG400, Shanghai Science Supplies Purchasing and Supply Station Processing Factory), 20 parts; additive lithium chloride (LiCl), 1 part.

[0019] The preparation method of the high-throughput ultrafiltration membrane material based on polyacrylonitrile of the present embodiment includes the following contents:

[0020] (1) Preparation of casting solution: dry polyacrylonitrile in a vacuum oven at 80°C for 4 hours, then dissolve the dried polyacrylonitrile and polyethylene glycol (PEG400) in dimethylacetamide solvent according to the formula , stir evenly to make a mixed solution, then add additives to the mixed solution, and stir for 4 hours at 60°C to form a uniform casti...

Embodiment 2

[0029] The high-flux ultrafiltration membrane material based on polyacrylonitrile of the present embodiment, the parts by weight of its components are: polyacrylonitrile (Shanghai Jinshan Chemical Factory), 25 parts; dimethylacetamide solvent (Tianjin Bo Di Chemical Co., Ltd.), 55 parts; polyethylene glycol (PEG400, Shanghai Scientific Supplies Purchasing and Supply Station Processing Factory), 20 parts; the additive is zinc chloride, 1.1 parts.

[0030] The preparation method of the high-throughput ultrafiltration membrane material based on polyacrylonitrile of the present embodiment includes the following contents:

[0031] (1) Preparation of casting solution: dry polyacrylonitrile in a vacuum oven at 80°C for 4 hours, then dissolve the dried polyacrylonitrile and polyethylene glycol (PEG400) in dimethylacetamide solvent according to the formula , stir evenly to make a mixed solution, then add additives to the mixed solution, and stir for 4 hours at 80°C to form a uniform ca...

Embodiment 3

[0040] The high-flux ultrafiltration membrane material based on polyacrylonitrile of the present embodiment, the parts by weight of its components are: polyacrylonitrile (Shanghai Jinshan Chemical Factory), 25 parts; dimethylacetamide solvent (Tianjin Bo Di Chemical Co., Ltd.), 55 parts; polyethylene glycol (PEG400, Shanghai Science Supplies Purchasing and Supply Station processing plant), 20 parts; additives, 1.2 parts. Wherein, the additive includes the following components: lithium chloride (LiCl), 30 parts; zinc chloride, 40 parts; isopropanol, 10 parts.

[0041] The preparation method of the high-throughput ultrafiltration membrane material based on polyacrylonitrile of the present embodiment includes the following contents:

[0042] (1) Preparation of casting solution: dry polyacrylonitrile in a vacuum oven at 80°C for 4 hours, then dissolve the dried polyacrylonitrile and polyethylene glycol (PEG400) in dimethylacetamide solvent according to the formula , stir evenly t...

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Abstract

The invention solves a technical problem by providing a polyacrylonitrile based ultrafiltration membrane material with high throughput and a preparation method thereof. A technical scheme adopted is as below: the polyacrylonitrile based ultrafiltration membrane material with high throughput includes the components of, by weight, 15-25 parts of polyacrylonitrile, 50-60 parts of dimethyl acetamide solvent, 15-20 parts of polyethylene glycol (PEG400), and 1-1.5 parts of additive. By changing the components and ratio, the polyacrylonitrile based ultrafiltration membrane with high throughput, high efficiency and long service life can be prepared.

Description

technical field [0001] The invention relates to an ultrafiltration membrane material, in particular to a polyacrylonitrile-based high-flux ultrafiltration membrane material and a preparation method thereof, belonging to the technical field of polymer materials. Background technique [0002] In foreign countries, ultrafiltration membranes are mainly used for drinking water treatment, while in my country, they are mainly used for wastewater reuse in industrial fields as pretreatment for reverse osmosis. At present, ultrafiltration technology is developing rapidly, there are more and more types of membranes, and large-scale industrial applications are increasing day by day. In the domestic water industry market, ultrafiltration technology has been widely used in the fields of electric power, steel, chemical and other industrial wastewater treatment. With the development of economy and society, there will be more and more large-scale wastewater treatment projects, opening up a...

Claims

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Application Information

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IPC IPC(8): B01D71/42B01D67/00B01D69/08
Inventor 杨佃章邓发晓蔡树威张松
Owner CSR QINGDAO HUAXUAN WATER
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