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High-flux ceramic support body, preparation method and application thereof

A support and high-throughput technology, which can be used in ceramic products, applications, and other household appliances, etc., can solve problems such as strength decline, and achieve the effects of increased bending strength, high mass flux, and high application prospects

Active Publication Date: 2022-03-04
电子科技大学长三角研究院(湖州)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CN 103638826 introduces the use of a sacrificial layer to remove the sponge layer formed in the phase inversion process to obtain a support material with higher porosity to improve flux, but its strength will be greatly reduced

Method used

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  • High-flux ceramic support body, preparation method and application thereof
  • High-flux ceramic support body, preparation method and application thereof
  • High-flux ceramic support body, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A method for preparing a high-throughput ceramic support body, comprising the following steps: preparing ceramic slurry and sacrificial layer slurry respectively, and the proportioning ratio is shown in the following table:

[0033]

[0034] The prepared slurry is subjected to ball milling, the rotation speed of the planetary ball mill is 300r / min, and the ball milling time is 24h. Then use a double-layer scraper device to carry out a double-layer casting process, the total thickness of the casting is 1mm, the thickness of the upper layer of ceramic slurry is 0.85mm, and the thickness of the lower layer of graphite slurry is 0.15mm. The cast slurry was transferred to water for curing, and the curing time was 10 hours. The cured precursor was dried at room temperature for 3 days, and then cut into rectangles. After drying the ceramic precursor, gently wipe its upper surface with N-methyl-pyrrolidone, then stack the upper surfaces of the two films together, and use a ...

Embodiment 2

[0041] A method for preparing a high-throughput ceramic support body, comprising the following steps: preparing ceramic slurry and sacrificial layer slurry respectively, and the proportioning ratio is shown in the following table:

[0042]

[0043]

[0044]The prepared slurry is subjected to ball milling, the rotation speed of the planetary ball mill is 300r / min, and the ball milling time is 24h. Then use a double-layer scraper device to carry out a double-layer casting process, the total thickness of the casting is 1mm, the thickness of the upper layer of ceramic slurry is 0.85mm, and the thickness of the lower layer of graphite slurry is 0.15mm. The cast slurry was transferred to water for curing, and the curing time was 10 hours. Dry the cured precursor at room temperature for 3 days, and then cut it into the desired circle or rectangle. After drying the ceramic precursor, gently wipe its upper surface with N-methyl-pyrrolidone, then stack the upper surfaces of the t...

Embodiment 3

[0047] A method for preparing a high-throughput ceramic support body, comprising the following steps: preparing ceramic slurry and sacrificial layer slurry respectively, and the proportioning ratio is shown in the following table:

[0048]

[0049]

[0050] The prepared slurry is subjected to ball milling, the rotation speed of the planetary ball mill is 300r / min, and the ball milling time is 24h. Then use a double-layer scraper device to carry out a double-layer casting process, the total thickness of the casting is 1 mm, the thickness of the upper layer of ceramic slurry is 0.7 mm, and the thickness of the lower layer of graphite slurry is 0.3 mm. The cast slurry was transferred to water for curing, and the curing time was 10 hours. The cured precursor was dried at room temperature for 3 days, and then cut into circular shapes. After drying the ceramic precursor, gently wipe its upper surface with N-methyl-pyrrolidone, then stack the upper surfaces of the two films to...

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Abstract

The invention discloses a high-flux ceramic support body, a preparation method and application thereof, and the preparation method comprises the following steps: step 1, preparing ceramic slurry and sacrificial layer slurry; step 2, casting the ceramic slurry and the sacrificial layer slurry on the substrate by adopting a double-layer casting method, wherein the ceramic slurry is on the upper part and the sacrificial layer slurry is on the lower part; step 3, transferring the tape-cast slurry into a curing agent for phase inversion curing, and then drying at room temperature; 4, hot-pressing the two layers of precursors together in a top-to-top manner; and 5, carrying out high-temperature sintering on the hot-pressed ceramic support body to form the porous ceramic support body. The obtained ceramic support body is of a structure shaped like a Chinese character'fei ', a large number of finger-shaped holes are formed in the upper surface and the lower surface, and the ceramic support body has the characteristics of high porosity, high flux, high strength and the like, is easy to load other functional materials, is suitable for separation membrane support bodies and catalyst carriers, and has a relatively high application prospect in the fields of membrane separation, catalysis and the like.

Description

technical field [0001] The invention relates to the field of ceramic support preparation, in particular to a high-throughput ceramic support, a preparation method and an application thereof. Background technique [0002] Membrane separation is a separation technology that appeared in the early 20th century. Under the action of external driving force, the target mixture can be separated, purified and concentrated. The membrane used in membrane separation requires permselectivity and high flux, so the asymmetric structure separation membrane composed of support body and functional layer is more favored. The functional layer provides selective permeability, and the support body provides high strength and high flux. Because of its advantages of high strength, high temperature resistance, chemical corrosion resistance and easy cleaning, ceramic support materials are one of the hotspots in the field of membrane technology research. The functional layer material is prepared on th...

Claims

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Application Information

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IPC IPC(8): C04B38/06C04B35/584C04B35/10C04B35/622C04B35/64
CPCC04B38/067C04B38/0645C04B35/10C04B35/584C04B35/622C04B35/64C04B2235/3206C04B2235/3217C04B2235/3225C04B2235/6562C04B2235/6567C04B2235/96C04B38/0074
Inventor 王俊伟徐鑫尹良君
Owner 电子科技大学长三角研究院(湖州)
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