Polyarylenesulfidesulfone hollow fiber and flat plate separating membrane and preparation method thereof

A polyarylene sulfide sulfone and fiber separation technology, which is applied in chemical instruments and methods, semi-permeable membrane separation, membrane technology, etc., can solve the problems of small flux, small pore size, and limited application range, and achieve narrow pore size distribution, The effect of sound structure and simple process

Inactive Publication Date: 2014-12-24
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current polyarylene sulfide sulfone separation membranes have the problems of small pore size and low flux, which limits the scope of further application.

Method used

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  • Polyarylenesulfidesulfone hollow fiber and flat plate separating membrane and preparation method thereof
  • Polyarylenesulfidesulfone hollow fiber and flat plate separating membrane and preparation method thereof
  • Polyarylenesulfidesulfone hollow fiber and flat plate separating membrane and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Example 1: Preparation of polyarylene sulfide sulfone flat membrane.

[0032] Add 12g of polyarylene sulfide sulfone resin, 70g of N-methylpyrrolidone, 8g of polyvinylidene fluoride, 2g of polyvinylpyrrolidone, 6g of polyethylene glycol, and 2g of sodium stearate into a dissolution kettle with a stirrer and a thermometer, Stir and dissolve at a temperature of 120°C, centrifuge at a speed of 5000r / min for 10min in a centrifuge, filter to remove impurities, and stand for 2 hours for defoaming to make a homogeneous stock solution. Scrape the stock solution evenly on a quartz glass plate at a temperature of 20°C with a flat-plate scraper, then immerse the nascent membrane in deionized water at a temperature of 20°C, and the gel will solidify into a polyarylene sulfide sulfone separation membrane. After washing with water, the polyarylene sulfide sulfone separation membrane is soaked in an aqueous solution containing 30% glycerol to preserve pores, and dried to obtain a poly...

Embodiment 2

[0035] Add 16g of polyarylene sulfide sulfone resin, 4g of polyvinylidene fluoride, 68g of N-methylpyrrolidone, 4g of polyvinylpyrrolidone, and 8g of dibutyl phthalate into a dissolution kettle with a stirrer and a thermometer. Stir to dissolve at ℃, centrifuge at a speed of 5000r / min for 10min in a centrifuge, filter to remove impurities, and stand for 4h to make a homogeneous stock solution. Scrape the stock solution evenly on a quartz glass plate with a temperature of 60°C with a flat-plate scraper, and then immerse the nascent membrane in deionized water with a temperature of 60°C, and the gel will solidify into a polyarylene sulfide sulfone separation membrane. After washing with water, the polyarylene sulfide sulfone separation membrane is soaked in an aqueous solution containing 30% glycerol to preserve pores, and dried to obtain a polyarylene sulfide sulfone separation membrane.

[0036] After testing, the flux of the prepared polyarylene sulfide sulfone separation mem...

example 3

[0038] Add 28g of polyarylene sulfide sulfone resin, 1g of polyvinylidene fluoride, 64g of N-methylpyrrolidone, 2g of polyvinylpyrrolidone, and 5g of aluminum oxide into a dissolution kettle equipped with a stirrer and a thermometer, and stir and dissolve at a temperature of 140°C , centrifuge at a speed of 5000r / min for 10min in a centrifuge, filter to remove impurities, and let it stand for 4h for defoaming to make a homogeneous stock solution. Scrape the stock solution evenly on a quartz glass plate at a temperature of 40°C with a flat-plate scraper, then immerse the nascent membrane in deionized water at a temperature of 40°C, and the gel will solidify into a polyarylene sulfide sulfone separation membrane. After washing with water, the polyarylene sulfide sulfone separation membrane is soaked in an aqueous solution containing 30% glycerol to preserve pores, and dried to obtain a polyarylene sulfide sulfone separation membrane.

[0039] After testing, the flux of the prepa...

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Abstract

The invention discloses a polyarylenesulfidesulfone hollow fiber and flat plate separating membrane and a preparation method thereof. The polyarylenesulfidesulfone hollow fiber and flat plate separating membrane is characterized in that 12-28 parts of polyarylenesulfidesulfone, 1-10 parts of polyvinylidene fluoride, 2-8 parts of hydrophilic polymer, 2-10 parts of an additive and 2-10 parts of a solvent are added into a dissolution kettle, stirred and dissolved at the temperature of 120-160 DEG C, subjected to centrifugal filtration to remove solid impurities and subjected to standing and defoaming for 2-4 hours, and polymer dope is prepared; the polymer dope is uniformly scraped on a glass plate by a flat plate type membrane scraping machine, a solvent is pre-evaporated for 10-60 seconds, a primary membrane is immersed into a coagulating bath for curing to obtain a polyarylenesulfidesulfone separating membrane, the temperature of the glass plate is 20-60 DEG C, the humidity is 50%-90%, and the temperature of the coagulating bath is 20-60 DEG C; or the polymer dope is sprayed from an annular spinning nozzle through wet spinning, passes by a 0-10 cm spinning line, is immersed into the coagulating bath and is stretched, wound and formed, a spinning core liquid adopts an ethanol solution with concentration of 50%, the temperature of the coagulating bath is 20-60 DEG C, the spinning humidity is 50%-90%, and the polyarylenesulfidesulfone hollow fiber separating membrane is prepared.

Description

technical field [0001] The invention relates to a polyarylene sulfide sulfone hollow fiber and a flat separation membrane and a preparation method thereof, belonging to the field of preparation of polymer separation membranes. Background technique [0002] Polymer separation membrane is a material used in contemporary high-efficiency separation, concentration, purification and purification equipment, and has been widely used in the fields of chemical industry, environmental protection, food, biology, pharmaceuticals, electronics, electric power, metallurgy, textiles, and seawater desalination. It plays an important role in contemporary energy, resources and solving environmental pollution problems. Polyarylene sulfide sulfone is a new type of membrane material. Compared with commonly used polyvinylidene fluoride, polysulfone, and polyvinyl chloride membrane materials, it has higher heat resistance, corrosion resistance, solvent resistance, acid and alkali resistance. . Chi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D71/68B01D69/06B01D69/08B01D67/00
Inventor 杨杰袁书珊王越王孝军张刚龙盛如
Owner SICHUAN UNIV
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