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A kind of polyaryl sulfone amide-based porous membrane and its preparation method and application

A technology of polyarylsulfone amide and porous membrane, applied in polyarylsulfone amide-based porous membrane and its preparation method and application, in the field of chemical industry, to achieve the effects of uniform pore size distribution, excellent flame retardancy, and high temperature dimensional stability

Active Publication Date: 2015-09-09
QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The preparation of polyarylsulfone amide-based porous membranes by phase inversion technology and its application have not been reported so far

Method used

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  • A kind of polyaryl sulfone amide-based porous membrane and its preparation method and application
  • A kind of polyaryl sulfone amide-based porous membrane and its preparation method and application

Examples

Experimental program
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Embodiment 1

[0014] Add 6 g of polyarylsulfone amide, 1.5 g of n-butanol and 22.5 g of N, N-dimethylacetamide into a 100 mL reagent bottle, stir at 75 °C for 3 h, and prepare a uniform polyarylsulfone amide solution (casting solution), pour the obtained casting solution on a glass plate, and scrape it with a 300 μm scraper to form a solution film. After standing for a while, the glass plate with the solution membrane was immersed in a 75°C deionized water coagulation bath for 3 min to solidify and regenerate to obtain a polyarylsulfoneamide porous membrane.

Embodiment 2

[0016] Add 4.5 g of polyarylsulfoneamide, 1.5 g of polyvinylidene fluoride-hexafluoropropylene, 3 g of ethanol and 21 g of N-methylpyrrolidone into a 100 mL reagent bottle, stir at 60 °C for 5 h, and prepare a homogeneous mixed solution (casting solution). The obtained casting solution was poured onto a glass plate, and scraped with a 200 μm scraper to form a solution film. After standing still for a while, the above-mentioned glass plate with the solution membrane was immersed in a 30 °C methanol coagulation bath for 20 min to solidify and regenerate to obtain a polyarylsulfoneamide / polyvinylidene fluoride-hexafluoropropylene porous membrane.

Embodiment 3

[0018] Add 3 g polyarylsulfoneamide, 3 g polymethyl methacrylate, 4.5 g glycerol and 19.5 g tetrahydrofuran into a 100 mL reagent bottle, stir at 40 °C for 7 h, and prepare a uniform mixed solution (cast membrane fluid). The obtained casting solution was poured onto a glass plate, and scraped with a 400 μm scraper to form a solution film. After standing still for a while, the glass plate with the solution membrane was immersed in a 45 °C diethyl ether coagulation bath for 40 min to solidify and regenerate to obtain a polyaryl sulfone amide / polymethyl methacrylate porous membrane.

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Abstract

The invention belongs to the field of polymeric membrane materials, and particularly relates to a polyarylsulfone amido porous membrane, and a preparation method and an application thereof. The porous membrane is provided with a porous eyed structure, the hole diameter range is 50 nm-5 mum, and the porosity is 50-90%. The invention further discloses the preparation method of the porous membrane. The polyarylsulfone amido porous membrane is prepared from a solution containing polyarylsulfone amide, an additive, a pore-foaming agent and a solvent with a phase inversion method. The preparation technology is good in controllability; the preparation method is simple; the production cost is low; the obtained porous membrane is adjustable in hole diameter, good in penetrability and higher in membrane air permeability; the dimension shrinkage rate at 200 DEG C is less than 1%; the thermal stability is excellent; and the flame resistance is good. The porous membrane can be used in the fields of high-temperature filter materials, adsorbing materials, air-permeability packaging materials, parting materials, lithium ion battery diaphragms and the like.

Description

technical field [0001] The invention relates to a polyarylsulfone amide-based porous membrane and its preparation method and application, which belong to the field of polymer membrane materials, and also belong to the fields of chemical engineering, environmental engineering, separation engineering, agriculture and electrochemistry. Background technique [0002] Porous membranes have good permeability and specific gas selectivity, which makes porous membranes widely used in many fields, such as water treatment, gas separation, environmental protection and other fields. At present, there are many membrane-making methods at home and abroad, including physical methods and chemical methods. Among them, the most practical ones are phase inversion method (salivation method and spinning method) and composite membrane method. The phase inversion method refers to the process of changing the homogeneous membrane-forming solution from the liquid phase to the solid phase through the vo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L81/10C08L27/12C08L71/02C08L71/10C08L79/08C08L81/06C08L33/12C08J5/18C08J9/28
Inventor 崔光磊张建军岳丽萍孔庆山刘志宏姚建华
Owner QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
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