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High-strength and multi-morphology Al2O3 particle/Al2O3 fiber composite ceramic sheet and preparation method thereof

A ceramic sheet and fiber composite technology, which is applied in the field of composite ceramic sheets, can solve the unsolved problems of mechanical strength and poor green formability, and achieve the effects of inhibiting disordered migration, high brittleness, and suppressing stress concentration

Active Publication Date: 2022-04-29
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] As a ceramic material with great potential for construction, traditional ceramic slabs still have huge technical barriers in the "thinning" technology, and key problems such as poor mechanical strength and poor green formability have not yet been overcome.

Method used

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  • High-strength and multi-morphology Al2O3 particle/Al2O3 fiber composite ceramic sheet and preparation method thereof
  • High-strength and multi-morphology Al2O3 particle/Al2O3 fiber composite ceramic sheet and preparation method thereof
  • High-strength and multi-morphology Al2O3 particle/Al2O3 fiber composite ceramic sheet and preparation method thereof

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Effect test

preparation example Construction

[0040] The specific technical scheme is as follows: a high-strength multi-morphology Al 2 o 3 Particle / Al 2 o 3 A preparation method for a fiber composite ceramic sheet, comprising the steps of:

[0041] 1) Spherical and rod-shaped Al 2 o 3 The powders are weighed sequentially according to a specific mass ratio and mixed uniformly to obtain Al 2 o 3 Mix powder A. Among them, spherical Al 2 o 3 The particle diameter of the powder is 100-200nm, the mesopore diameter is 1-5nm, and the mesoporosity is 5%-10%. Rod Al 2 o 3 The particle size of the powder is 1-5 μm, the mesopore diameter is 50-100 nm, and the mesoporosity is 10%-20%. The specific mass ratio above is spherical Al 2 o 3 Powder: Rod Al 2 o 3 Powder=(20-30):(5-10).

[0042] 2) Take Al 2 o 3 Mix powder A, magnesium oxide, manganese oxide, high-strength cement soil, high-quality potassium feldspar, kaolin, black talc, Shaoguan ball clay, xenotime soil, carboxymethyl cellulose, sodium tripolyphosphate 11...

Embodiment 1

[0048] 1) Spherical and rod-shaped Al 2 o 3 The powders are weighed sequentially according to a specific mass ratio and mixed uniformly to obtain Al 2 o 3 Mix powder A. Among them, spherical Al 2 o 3 The particle size of the powder is 100nm, the mesopore diameter is 1nm, and the mesoporosity is 5%. Rod Al 2 o 3 The particle size of the powder is 1 μm, the mesopore diameter is 50 nm, and the mesoporosity is 10%. The specific mass ratio above is spherical Al 2 o 3 Powder: Rod Al 2 o 3 Powder = 20:5.

[0049] 2) Take Al 2 o 3 Mix powder A, magnesium oxide, manganese oxide, high-strength cement soil, high-quality potassium feldspar, kaolin, black talc, Shaoguan ball clay, xenotime soil, carboxymethyl cellulose, sodium tripolyphosphate 11 kinds of raw materials, according to the following Stoichiometric weighing and uniform mixing, and then crushing, ball milling, pulping and other processes to obtain the slurry precursor B with good suspension. where Al 2 o 3 The...

Embodiment 2

[0054] 1) Spherical and rod-shaped Al 2 o 3 The powders are weighed sequentially according to a specific mass ratio and mixed uniformly to obtain Al 2 o 3 Mix powder A. Among them, spherical Al 2 o 3 The particle diameter of the powder is 200nm, the mesopore diameter is 5nm, and the mesoporosity is 10%. Rod Al 2 o 3 The particle size of the powder is 5 μm, the mesopore diameter is 100 nm, and the mesoporosity is 20%. The specific mass ratio above is spherical Al 2 o 3 Powder: Rod Al 2 o 3 Powder = 30:10.

[0055] 2) Take Al 2 o 3 Mix powder A, magnesium oxide, manganese oxide, high-strength cement soil, high-quality potassium feldspar, kaolin, black talc, Shaoguan ball clay, xenotime soil, carboxymethyl cellulose, sodium tripolyphosphate 11 kinds of raw materials, according to the following Stoichiometric weighing and uniform mixing, and then crushing, ball milling, pulping and other processes to obtain the slurry precursor B with good suspension. Among them, A...

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Abstract

The invention provides a high-strength and multi-morphology Al2O3 particle / Al2O3 fiber composite ceramic sheet and a preparation method thereof.The preparation method comprises the steps that spherical Al2O3 powder and rod-like Al2O3 powder are evenly mixed with magnesium oxide, manganese oxide, cement soil, potassium feldspar, kaolin, black talc, ball clay, xenotime soil, carboxymethyl cellulose and sodium tripolyphosphate, then crushing, ball milling and pulping are conducted, and the high-strength and multi-morphology Al2O3 particle / Al2O3 fiber composite ceramic sheet is obtained. A slurry precursor B is obtained; uniformly mixing the prepared slurry precursor B, Al2O3 fibers C and a KH550 solution to obtain green body powder D; and pressing the blank powder D into a ceramic sheet blank, and sintering to obtain the high-strength multi-morphology Al2O3 particle / Al2O3 fiber composite ceramic sheet. According to the preparation method, the one-dimensional Al2O3 fiber body, the multi-morphology Al2O3 particles and the ceramic matrix powder are tightly combined, so that the prepared large-specification ceramic sheet is excellent in mechanical property. In addition, the production process is simple, short in production period, easy to combine with the current traditional ceramic sheet production process and wide in potential commercial market.

Description

technical field [0001] The invention belongs to the technical field of composite ceramic sheets, in particular to a high-strength, multi-morphology Al 2 o 3 Particle / Al 2 o 3 Fiber composite ceramic sheet and its preparation method. Background technique [0002] With the increasing emphasis on energy saving and emission reduction, building ceramic thin plates have become the target of public criticism due to high pollution, high energy consumption, and extensive use of mineral raw materials. At present, the frontier industry mainly improves the plasticity of the wet billet by improving the composition of the billet formula, thereby reducing the thickness of the building ceramic sheet, achieving the purpose of reducing the amount of raw materials and reducing production energy consumption. Unfortunately, as the thickness of architectural ceramic thin plates decreases, their mechanical properties such as bending strength decrease significantly, making it difficult to form ...

Claims

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Application Information

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IPC IPC(8): C04B35/80C04B35/10C04B35/622
CPCC04B35/80C04B35/10C04B35/622C04B2235/6562C04B2235/6565C04B2235/6567C04B2235/5224C04B2235/77C04B2235/96
Inventor 曹丽云钟辛子黄剑锋吴辰宇蒋永张帅赵萍萍牛文芳
Owner SHAANXI UNIV OF SCI & TECH
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