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Preparation method of disc type porous metal film

A porous metal and disk-type technology, applied in chemical instruments and methods, membrane technology, semi-permeable membrane separation, etc., can solve the problems of uneven membrane thickness and unfriendly environment, and achieve low cost, smooth membrane surface, and high filtration efficiency. high precision effect

Pending Publication Date: 2021-07-27
WESTERN BAODE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a method for preparing a disk-type porous metal membrane, which solves the problems of uneven film thickness and unfriendly environment in the process of preparing a disk-type porous metal membrane by the existing wet spraying method

Method used

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  • Preparation method of disc type porous metal film
  • Preparation method of disc type porous metal film
  • Preparation method of disc type porous metal film

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preparation example Construction

[0032] The invention provides a method for preparing a disk-type porous metal membrane, such as figure 1 shown, including the following steps:

[0033] Step 1. Weigh the following components according to mass percentage: binder 3-10%, dispersant 0.75-1%, defoamer 0.08-0.25%, and the rest is deionized water. The mass percentage of the above components The sum is 100%; wherein, the binder is one or more of polyacrylamide, polyacrylic acid, polyvinylpyrrolidone or polyethyleneimine; the dispersant is sodium pyrophosphate, sodium hexametaphosphate or polyether F127 one or more of

[0034] Step 2, mixing and dissolving the binder, dispersant, defoamer and deionized water weighed in step 1 to prepare a slurry;

[0035] Step 3. Pour the metal powder and the slurry prepared in step 2 into a stirring tank according to the ratio of solid content of 0.75-1wt%, and mix evenly to obtain a mixed liquid 1 slurry system; wherein, the metal powder is stainless steel powder and nickel powder ...

Embodiment 1

[0040] Step 1, take the following components respectively according to mass percentage, 30g polyvinylpyrrolidone, 7.5g sodium hexametaphosphate, 2.5g defoamer and 960g deionized water;

[0041] Step 2. Dissolve the polyvinylpyrrolidone, sodium hexametaphosphate and defoamer weighed in step 1 in deionized water, stir at a low speed, and wait until the polyvinylpyrrolidone, sodium hexametaphosphate and defoamer are completely dissolved to obtain a slurry material;

[0042] Step 3. Pour 1000 g of the slurry prepared in step 2 into a mixing tank, weigh 10 g of 316LSS stainless steel spherical powder with an average particle size of 1.25 μm, add it to the mixing tank, stir and disperse at a high speed for 15 minutes, and then prepare the mixed solution;

[0043]Step 4. Put a disc-type porous metal support body with a diameter of 500 mm into the bottom of a cylindrical barrel with a diameter of 700 mm and a height of 1000 mm. The height of the support body from the bottom is 1 cm, a...

Embodiment 2

[0047] Step 1, take the following components respectively according to mass percentage, 114g polyvinylpyrrolidone, 20g sodium hexametaphosphate, 2g defoamer and 1864g deionized water;

[0048] Step 2. Dissolve the polyvinylpyrrolidone, sodium hexametaphosphate and defoamer weighed in step 1 in deionized water, stir at a low speed, and wait until the polyvinylpyrrolidone, sodium hexametaphosphate and defoamer are completely dissolved to obtain a slurry material;

[0049] Step 3. Pour 2000g of the slurry prepared in step 2 into a mixing tank, weigh 15g of 316LSS stainless steel spherical powder with an average particle size of 5 μm, add it to the mixing tank, stir and disperse at a high speed for 15 minutes, and then prepare the mixed solution;

[0050] Step 4. Put a disc-type porous metal support body with a diameter of 1000mm into the bottom of a cylindrical barrel with a diameter of 1100mm and a height of 1000mm. The height of the support body from the bottom is 1cm, and the ...

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Abstract

The invention discloses a preparation method of a disc type porous metal film. The method comprises the following steps: respectively weighing the following components in percentage by mass: 3-10% of a binder, 0.45-1% of a dispersing agent, 0.08-0.25% of a defoaming agent and the balance of deionized water, wherein the sum of the mass percentages of the components is 100%; mixing and dissolving the weighed binder, dispersing agent, defoaming agent and deionized water to obtain slurry; adding metal powder into the slurry according to the solid content of 0.75-1 wt%, and stirring and uniformly dispersing to prepare a mixed solution; and pouring the mixed solution into a cylindrical charging barrel in which a disc type porous metal support body is placed, naturally settling metal powder on the surface of the support body to form a porous metal film with uniform thickness and smooth surface, and drying, degreasing and sintering to obtain the disc type porous metal film. The disc type porous metal film prepared by the method is uniform in thickness, smooth in surface, high in permeation efficiency and safe and environment-friendly in production process.

Description

technical field [0001] The invention belongs to the technical field of filter materials, and in particular relates to a preparation method of a disc-type porous metal membrane. Background technique [0002] Membrane separation is a high-tech separation technology that has been rapidly developed and industrialized in the past 30 years. It has been widely used in food and medicine, energy and chemical industry, nuclear industry, electronics industry and environmental protection industry. For the performance of metal porous materials, requirements such as corrosion resistance, high temperature resistance, high mechanical strength, and high filtration accuracy are put forward, especially for membrane materials with a filtration accuracy of 0.1-2 μm. Traditional symmetric metal porous materials have uniform macropores, and it is difficult to ensure the dual requirements of high precision and high permeability. Therefore, asymmetric porous metal materials have been developed. Com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D71/02B01D67/00B22F5/10B01D69/10B01D69/04
CPCB01D71/022B22F5/10B01D67/0041B01D69/10B01D69/04
Inventor 王耀辉成凯曹卜元
Owner WESTERN BAODE TECH CO LTD