Polyarylene sulfide sulfone compound separating film and preparation method thereof

A technology of polyarylene sulfide sulfone and polyarylene sulfide, which is applied in the field of preparation of polymer separation membranes, can solve the problems of poor interception performance of polyarylene sulfide sulfone separation membranes, and achieves improved interception capacity, wide application range, porosity rate increase effect

Active Publication Date: 2018-01-12
四川中科兴业高新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to: aim at the above-mentioned problem of poor cut-off performance of the existing polyarylene sulfide sulfone separation membrane, the present invention provides a polyarylene sulfide sulfone composite separation membrane and its preparation method

Method used

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  • Polyarylene sulfide sulfone compound separating film and preparation method thereof
  • Polyarylene sulfide sulfone compound separating film and preparation method thereof
  • Polyarylene sulfide sulfone compound separating film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Add 44g of polyarylene sulfide sulfone resin (intrinsic viscosity 0.5dl / g), 145.5g of N-methylpyrrolidone, 3g of polyvinylpyrrolidone, 1.5g of sodium dodecylsulfonate, and 8g of silica gel into a closed mixer, and use After the nitrogen is removed from the air, stir and heat to dissolve at 150°C. After the dissolution is complete, cool down, filter to remove undissolved impurities, and stand for defoaming for 3 hours to obtain the polyarylene sulfide sulfone base membrane stock solution; scrape with a flat plate Coat a layer of 300 μm thick polyarylene sulfide sulfone-based film stock solution on a glass plate at 20°C, wait for the solvent to evaporate for 60 seconds, and the air humidity is 30% to form a primary film, then immerse in a coagulation bath to solidify The bath was distilled water at a temperature of 20 °C. After the film was completely cured, it was transferred to distilled water and soaked for 24 hours to prepare a flat base film.

Embodiment 2

[0051] The difference between this example and Example 1 lies in: polyarylene sulfide sulfone 12g, polyvinylpyrrolidone 1.2g, sodium dodecylsulfonate 1g, silica gel 3g, N-methylpyrrolidone 48g.

Embodiment 3

[0053] The difference between this example and Example 1 lies in: polyarylene sulfide sulfone 61g, polyvinylpyrrolidone 7g, sodium dodecylsulfonate 6g, silica gel 15g, N-methylpyrrolidone 205g.

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Abstract

The invention discloses a polyarylene sulfide sulfone compound separating film and a preparation method thereof. The polyarylene sulfide sulfone compound separating film comprises a polyarylene sulfide sulfone base film and a selective separating functional layer, wherein the selective separating functional layer is prepared from any one of fatty polyamide, aromatic polyamide, methyl-silicone andcellulose acetate through a coating method or an interfacial polycondencation method. According to the invention, the selective separating functional layer is added to the polyarylene sulfide sulfonebase film and the defects on the surface of the polyarylene sulfide sulfone base film are covered by the compact selective separating functional layer, so that the surface of the polyarylene sulfide sulfone compound separating film has a uniformly distributed pore structure, the porosity is increased and the pore size distribution is uniform; the interception capacity thereof is obviously promotedafter the selective separating functional layer is added; when the selective separating functional layer with hydrophilic group is adopted, hydrophilic modification for the polyarylene sulfide sulfone is not required.

Description

technical field [0001] The invention belongs to the field of preparation of polymer separation membranes, and in particular relates to a polyarylene sulfide sulfone composite separation membrane and a preparation method thereof. Background technique [0002] Membrane separation technology is an indispensable material for the development of modern high technology. It is mainly used in water treatment, electronics industry, pharmaceutical and biological engineering, environmental protection, petrochemical industry, food industry, medicine and textile and other fields, and its application scope and The scale is expanding year by year. [0003] Polyarylene sulfide sulfone is a new type of special engineering plastic, its glass transition temperature is above 215°C, it has excellent mechanical properties, flame retardancy, high temperature resistance, corrosion resistance, radiation resistance, chemical corrosion resistance and other properties; Arylsulfide sulfone has an amorph...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D71/68B01D71/70B01D71/56B01D69/12B01D69/08B01D69/06B01D67/00B01D61/00
Inventor 余雷刘洪
Owner 四川中科兴业高新材料有限公司
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