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Preparing method for multifunctional nanometer material composite membrane

A nanomaterial and composite membrane technology, applied in chemical instruments and methods, membrane technology, semi-permeable membrane separation, etc., can solve the problems of low water permeability, high cost and engineering cost, failure, etc., and achieve stable chemical properties and service life. Long, large surface area

Inactive Publication Date: 2005-02-23
王旭生
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The various expenses and engineering cost of above-mentioned method treatment water are very expensive
The key material used in the desalination membrane, the polymer organic membrane material, has disadvantages such as low water permeability, relatively small effective area, low strength, corrosion resistance, easy degradation, cracking, failure, and difficulty in cleaning. Therefore, its popularity and applicability are low. Difference

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Weigh nanoscale honeycomb microporous material silicon oxide (SiO X 2 parts of nanoparticles, 3 parts of silicon carbide (SiC) nanoparticles, adding dispersant: 20 parts of sodium naphthalenesulfonate formaldehyde condensate, 40 parts of acrylic acid copolymer fatty acid; membrane material: 3 parts of polyethyleneimine, sulfonated poly Mix 6 parts of sulfone evenly to make A solution, weigh 3 parts of polymerized monomer m-phenylenediamine, 3 parts of aromatic diamine, 4 parts of aromatic triamine; 1 part of triacyl chloride is made into B solution, and A and B solutions are mixed fully and evenly, and prepared into a casting solution, and the casting solution is uniformly contacted or scraped or sprayed to make it adhere to the porous polysulfone base membrane, at 120 ℃-148 ℃ in a hot air dryer for 2-15 minutes to separate the film from the base film to obtain a nanomaterial composite film.

Embodiment 2

[0019] Weigh 10 parts of nanoscale honeycomb microporous material silicon oxide (SiOX) nanoparticles with a surface porosity of 68%, add dispersant: 80 parts of sodium alkylnaphthalene sulfonate; membrane material: 5 parts of furfuryl alcohol, and stir to make Solution A; weigh polymer monomer: 2 parts of polyethyleneimine and 2 parts of sulfonated polysulfone; solvent: 40 parts of isooctane and 50 parts of ethanol are mixed evenly to prepare B solution, and A and B are mixed and stirred evenly to make a cast film Liquid, (using sulfuric acid as a catalyst, adding 2,4-diisocyanate tolylphenethyl in an appropriate amount as a cross-linking agent). Evenly contact the porous polysulfone base membrane with the casting solution for 1-10 minutes, take it out, or scrape or spray the casting solution, drain the excess solution for about 1 minute, so that the thickness of the membrane solution on the base membrane is 50nm-1000nm, Heat treatment at 80° C.-160° C. for 5-25 minutes; final...

Embodiment 3

[0021] Weigh the nano-scale honeycomb microporous material with a surface porosity of 68%: TiO 2 10 parts of nanoparticles, dispersant: 60 parts of polyacrylic acid, 20 parts of polyethylene glycol; membrane material: 60 parts of triethylisocyanic acid and stir evenly to make A solution; weigh polymer monomer: polyethyleneimine Mix with 20, 10 parts of sulfonated polysulfone, solvent: 10 parts of isooctane, 40 parts of ethanol, 2 parts of ethylenediamine, and 3 parts of polyethyleneimine to prepare B solution, and mix A and B evenly to make a casting Membrane fluid. Evenly contact the non-woven fabric with the casting solution for 1-10 minutes, take it out, scrape or spray the casting solution, drain the excess solution for about 1 minute, make the thickness of the film solution on the base film 50nm-1000nm, and then gel , rinse, heat treatment at 80°C-160°C for 5-25 minutes; make a finished film.

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Abstract

A multifunctional nano composite membrane is prepared from inorganic ceramics or metal, semiconductor and super-conductive nano materials mixed with polysulfones, poly(ether sulfone), sulfonated polyethersulfone ketone, aromatic cross polyamide and polymer to form various inorganic-organic composite materials. It is prepared from raw materials obtained easily, in a simple process, with low cost, and can be used in seawater desalting, water treating, electronic, medical and other industries.

Description

1. Technical field [0001] The invention relates to the preparation of a multi-purpose nano material composite film, in particular to a preparation method for compounding a nano material and a high molecular polymer. Nanomaterials made of SiO X , SiC, AI 2 o 3 、TiO 2 , Fe 2 o 3 , nano-semiconductor materials, nano-superconductor materials, etc. as functional coating materials of polymer materials or molecular sieves, reinforcing agents, anti-aging agents, in powder form. It has high strength, stable chemical properties, low density, large surface area, and a series of excellent properties and characteristics such as ions, molecules, electrons, and microwave, far-infrared progressive sieving, photocatalytic effect, microwave, and far-infrared absorption. Compounded with polymer materials, it can be widely used in seawater, brackish water desalination, water treatment, environmental protection, medicine, electronics industry, national defense technology and other fields. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D69/12C08J5/18C09D5/20
Inventor 王旭生孔祥聆王昕王晓晶
Owner 王旭生