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Sintered microfibrillar structure micrometer size granule porous composite material and production method

A technology of porous composite materials and manufacturing methods, which can be applied to ceramic products, other household utensils, household utensils, etc., and can solve the problems of limited application of composite materials, insufficient corrosion resistance and oxidation resistance, and achieve large porosity and large area volume The effect that the production cost is small

Inactive Publication Date: 2006-04-26
EAST CHINA NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the use of sintered metal Ni fibers can carry a large amount of porous and large specific surface area micron-scale particles, which can significantly improve the mass transfer and heat transfer performance of the reaction bed and improve the utilization efficiency of the reactor when used in the reaction or adsorption process, but the metal fiber The lack of anti-corrosion and anti-oxidation properties of materials greatly limits the application of composite materials of this structure.

Method used

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  • Sintered microfibrillar structure micrometer size granule porous composite material and production method
  • Sintered microfibrillar structure micrometer size granule porous composite material and production method
  • Sintered microfibrillar structure micrometer size granule porous composite material and production method

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Embodiment 1

[0029] The first step: the binder is water-insoluble cellulose with a diameter and length of 10-100 μm and 1-10 mm, respectively, and the microfiber is E-type glass microfiber of calcium aluminosilicate with acid corrosion resistance and strength enhancement, micron scale Particles are SiO with a particle size of 100-150 μm 2 Particles, take 0.5g of binder and add it to 1000g of water, stir evenly, then add 1.5g of microfiber and 4.5g of granule to the above liquid in turn, stir to form a uniform slurry, binder: microfiber: micron-scale particles: weight of water The ratio is 1:3:9:2000.

[0030] The second step: the slurry prepared in the first step is added to a filter container filled with 5000g water, and the water is filtered out after mixing evenly, and a wet filter cake is formed on the filter mold. The weight ratio of binder: adding water is 1:10000.

[0031] The third step: drying the wet filter cake obtained in the second step, and sintering the dry filter cake in ...

Embodiment 2

[0041] Except the following difference, all the other are the same as embodiment 1.

[0042] In the first step, the amount of the binder and the particles added is 0.9g and 9.0g respectively, and the weight ratio of binder:microfiber:micron-sized particles:water is 1:1.66:10:1111. In the second step, the weight ratio of binder: added water is 1:5555. In the third step, the sintering time is 40 minutes. The void ratio of the product is 65%, and the microfibers account for 4.5% of the total volume of the product. This product is labeled B'.

Embodiment 3

[0044] Except the following difference, all the other are the same as embodiment 1.

[0045] In the first step, the micron-scale particles are Al with a particle size of 100-200 μm 2 o 3 The particle, the addition amount is 9.0g, the addition amount of binder is 0.9g, and the weight ratio of binder:microfiber:micron scale particle:water is 1:1.66:10:1111. In the second step, the weight ratio of binder: added water is 1:5555. In the third step, the sintering time is 40 minutes. The void ratio of the product is 67%, and the microfibers account for 5% of the total volume of the product. This product is labeled C'.

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Abstract

The sintered composite material contains microfibril oxide and micron level grains of catalyst, adsorbent, magnetic material, etc. and its oxide microfibrils have sintered combining points to form 3D netted structure to bind up the micron level grains. The preparation process of the sintered composite material includes: mixing microfibril, micron level grains, adhesive and water in certain proportion to form slurry; filtering in forming mold to form the precursor; drying the precursor and sintering at certain temperature and atmosphere to form the composite material. The composite material has the advantages of excellent anticorrosive performance, excellent antioxidant performance, controllable netted structure, high micron level grain supporting amount, easy production and low cost.

Description

technical field [0001] The invention relates to a porous composite material and a manufacturing method of sintered microfiber structured micron-scale particles, and belongs to the technical field of porous composite materials and manufacturing thereof. Background technique [0002] Due to their controllable porosity, insulation and corrosion resistance, inorganic oxide porous composites are widely used in many fields such as thermal insulation materials, catalysts and / or catalyst supports, filtration and building materials. Inorganic oxide porous composites are usually fabricated by sintering / melting, extruding or bonding microspheres. For the technical methods of sintering / fused or bonded microspheres, the manufactured porous materials can only obtain a narrow distribution of porosity in a fixed area, and the porosity value strongly depends on the packing method. In addition, the effective pore size of the three-dimensional network structure formed by...

Claims

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Application Information

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IPC IPC(8): C04B38/00C04B35/64
Inventor 路勇刘月明杨建国何鸣元薛青松陈金春汤颖王红
Owner EAST CHINA NORMAL UNIV
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