Preparation method of porous ceramic-metal composite film material

A porous ceramic and metal composite technology, which is applied in the field of preparation of porous composite membrane materials, can solve the problems of complex coating process and sintering process, poor adhesion of the ceramic membrane layer, and poor finish of the membrane layer, so as to solve the problem of insufficient adhesion, The effect of increased contact area and high specific surface area

Active Publication Date: 2012-12-26
南京髙谦功能材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to improve the existing porous ceramic-metal composite membrane preparation methods such as poor adhesion of the ceramic membrane, complex coating process and sintering process in the preparation process, poor

Method used

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  • Preparation method of porous ceramic-metal composite film material
  • Preparation method of porous ceramic-metal composite film material

Examples

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Embodiment 1

[0037] A preparation method of tubular porous ceramic-metal composite membrane material, comprising the following steps:

[0038] (1) A dense corundum tube is used as the rigid outer mold, with an inner diameter of 15 mm and a length of 1100 mm; a silicone tube is used as an elastic inner mold, with an outer diameter of 9 mm and a length of 1200 mm, and a polyurethane ring is used as the elastic head with an outer diameter of 15.5 mm. 8 mm inner diameter, 5 mm long.

[0039] (2) 20 g of Al with an average particle size of 2 μm 2 O 3 The powder was vigorously stirred with 100 ml of PVA (5 wt%) aqueous solution to form a stable suspension; the inner surface of the aforementioned corundum tube was repeatedly dipped for 5 times by the dipping technique, and dried at 120 °C for 2 h after each dipping to form a thickness of about 100 μm. coating.

[0040] (3) Mix 320 g of stainless steel powder with an average particle size of 100 μm and stearic acid in a volume of 5:1, and fill ...

Embodiment 2

[0044] A preparation method of tubular porous ceramic-metal composite membrane material, comprising the following steps:

[0045] (1) Use quartz tube as rigid outer mold, inner diameter 10 mm, length 1100 mm; use polyurethane tube as elastic inner mold, outer diameter 6 mm, length 1200 mm, use silicone tube as elastic head, outer diameter 10 mm, inner diameter 5 mm, 5 mm long.

[0046] (2) 10 g Al with an average particle size of 0.5 μm 2 O 3 The powder was stirred and mixed with 100 ml of PVB ethanol solution (1 wt%) to form a stable suspension; the inner surface of the aforementioned quartz tube was coated twice by spin coating technology, and dried at 80 °C for 1 h after each spin coating to form a thick A film layer of about 50 μm.

[0047] (3) Fill 200 g of stainless steel powder with an average particle size of 20 μm into the annular cavity between the coated quartz tube and the polyurethane tube by means of oscillating filling, seal both ends with silicone rings, and...

Embodiment 3

[0051] A preparation method of tubular porous ceramic-metal composite membrane material, comprising the following steps:

[0052] (1) A porous alumina tube is used as the rigid outer mold, with an inner diameter of 6 mm and a length of 300 mm; a polyurethane tube is used as an elastic inner mold, with an outer diameter of 3 mm and a length of 400 mm; a heat-shrinkable tube with a diameter of 12 mm is used for coating protection The heat-shrinking temperature was 80 °C for 2 h; a silicone tube was used as the elastic head, with an outer diameter of 6 mm, an inner diameter of 3 mm, and a length of 5 mm.

[0053] (2) TiO with an average particle size of 0.5 μm 2 The powder was stirred and mixed with a 1 wt% MC aqueous solution to form a stable suspension; the inner surface of the aforementioned porous tube was coated once by dipping technology, and then dried at 120 °C for 2 h to form TiO with a thickness of about 20 μm. 2 film layer.

[0054] (3) 25 g of nickel powder with an ...

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Abstract

The invention provides a preparation method of a porous ceramic-metal composite film material. The method comprises steps of: using ceramic as a rigid outer mold; preparing a ceramic coating in the inner surface of the rigid outer mold; adding a metal powder into a hollow cavity between the rigid outer mold and an elastic inner mold; sealing; forming by cold isostatic pressure; sintering a formed porous ceramic-metal composite film blank together with the rigid outer mold; and separating a sintering body from the rigid outer mold. Through improvement on the preparation process, the ceramic coating and the metal powder subjected to isostatic pressure forming are sintered under high temperature condition, so that a porous metal substrate and the ceramic film layer expand synchronously under effect of compressive stress of the rigid outer mold during the sintering. The prepared porous ceramic composite film material has strong adhesion, high strength, smooth, flat and flawless film layer, and improved practicability.

Description

technical field [0001] The invention relates to a preparation method of a porous composite membrane material, in particular to a preparation method of a porous ceramic-metal composite membrane material with a smooth surface of a ceramic layer and strong adhesion. Background technique [0002] The membrane separation method does not require a phase change process, and has the characteristics of energy saving, high efficiency, simple operation, and environmental friendliness, and has attracted great attention from countries and many industries around the world. At present, it has been widely used in the separation and purification process in the fields of petrochemical, biomedicine and food. With the continuous expansion of the application field of membrane technology, higher requirements are placed on the performance of the membrane. [0003] According to the different membrane materials, they can be divided into two categories: inorganic membranes and organic membranes. Amo...

Claims

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Application Information

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IPC IPC(8): B01D71/02B01D67/00B01D69/12
Inventor 黄彦俞健袁琪琛吴伟魏磊胡小娟宋军
Owner 南京髙谦功能材料科技有限公司
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