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A novel metal filtration film and preparation method thereof

A metal and filter membrane technology, applied in the field of new metal filter membranes and their preparation, can solve the problems of inability to fold, thick coating thickness, inconvenient use, etc.

Inactive Publication Date: 2006-10-11
陈明波
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The coating of the thin metal sheet is uniform, but the thickness of the coating is thick, it cannot be folded, and it is inconvenient to use

Method used

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  • A novel metal filtration film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Preparation of chromium metal filter membrane:

[0020] 1) A porous chromium material is used as a skeleton, and it is rolled by a rolling machine to form a thin porous material with a thickness of 0.3mm-0.6mm.

[0021] 2) Stir the granular chromium powder and binder uniformly in a ratio of 100: (1-5) (that is, 100 parts of metal powder and 1-5 parts of binder ethylene glycol), and coat it on the porous chromium skeleton on both sides.

[0022] 3) Roll the coated sheet into a metal sheet of 0.10-0.15 mm.

[0023] 4) The rolled metal sheet is sintered at a high temperature of 800-1200 degrees Celsius to make a chromium metal filter membrane.

[0024] 5) By this method, metal filter membranes of 0.1 nanometers to 5 micrometers can be made according to the powder particle size.

Embodiment 2

[0026] Preparation of nickel metal filter membrane:

[0027] 1) A porous nickel material-foamed nickel is used as the skeleton, and rolled by a rolling machine to become thin and porous, with a thickness of 0.2mm-0.25mm.

[0028] 2) Stir the granular nickel powder and binder uniformly at a ratio of 100: (2-3) (ie 100 parts of metal powder and 2-3 parts of binder PVA), and coat them on both sides of the porous nickel framework. side.

[0029] 3) Roll the coated sheet into a metal sheet of 0.10-0.15 mm.

[0030] 4) The rolled metal sheet is sintered at a high temperature of 600-1000 degrees Celsius to make a nickel metal filter membrane.

[0031] 5) By this method, metal filter membranes of 0.1 nanometers to 5 micrometers can be made according to the powder particle size.

Embodiment 3

[0033] Preparation of stainless steel metal filter membrane:

[0034] 1) A porous stainless steel material is used as a skeleton, and it is rolled by a rolling machine to form a thin porous material with a thickness of 0.2mm-0.7mm.

[0035] 2) Stir the granular stainless steel powder and binder uniformly at a ratio of 100: (1-5) (that is, 100 parts of metal powder and 1-5 parts of binder PTFE), and coat them on both sides of the porous stainless steel skeleton. side.

[0036] 3) Roll the coated sheet into a metal sheet of 0.10-0.15 mm.

[0037] 4) The rolled metal sheet is sintered at a high temperature of 300-950 degrees Celsius to make a stainless steel metal filter membrane.

[0038] 5) By this method, metal filter membranes of 0.1 nanometers to 5 micrometers can be made according to the powder particle size.

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Abstract

The invention relates to a metallic filter membrane which can be used in flat filtration, cylinder filtration and folded filtration, etc. Said preparing method uses following materials: nickel, titanium, chrome, stainless steel, molybdenum, cobalt, iron, and copper, etc, that using the powder of one said material or the alloy powder to be mixed with adhesive to be plated on the frameworks (alloy porous base band or spongy base band with same characters of powder) to be sintered. The invention can prepare the filter membrane whose diameter in 0.1 nanometers to 5 micrometers according to the different granularities of powder, with the characters of high-temperature resistance, acid alkali resistance, large flux, small volume, and long service life.

Description

technical field [0001] The invention relates to a novel metal filter membrane and a preparation method thereof. Background technique [0002] At present, membranes are divided into organic membranes and inorganic membranes. The organic membranes currently on the market are mostly cellulose acetate membranes, polyamide, polyether fluorine, polyolefin and other materials, which have poor temperature resistance, low mechanical strength, It is not easy to clean, has a short lifespan, and has a low reuse rate, and most of them are disposable. [0003] In recent years, with the development of membrane separation technology and its application, higher and higher requirements have been put forward for the use conditions of membranes. The catalytic reactions of many membranes are required to be carried out at several hundred degrees Celsius, while those used for food and biological products The separation membrane is also required to have high-temperature steam, and the characterist...

Claims

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Application Information

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IPC IPC(8): B01D71/02B01D67/00B01D69/00
Inventor 陈明波邢庆生
Owner 陈明波
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