A kind of lightweight cordierite-mullite composite ceramic material and preparation method thereof

A technology of composite ceramics and composite materials, which is applied in the field of lightweight cordierite-mullite composite ceramic materials and its preparation, can solve the problems of uneven distribution of phase composition, low thermal shock resistance, and high impurity content, and achieve The effect of low cost, low price and high reactivity

Inactive Publication Date: 2016-03-30
WUHAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In summary, the currently prepared porous lightweight cordierite-mullite composite ceramic materials have the following disadvantages: low strength, uneven distribution of phase composition, high impurity content, and low thermal shock resistance

Method used

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  • A kind of lightweight cordierite-mullite composite ceramic material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A light cordierite-mullite composite ceramic material and a preparation method thereof. The concrete steps of this method are:

[0024] Step 1, using 20-40wt% diaspore, 10-18wt% amorphous silica, 20-30wt% talcum powder and 30-40wt% clay as raw materials, plus 7-10wt% of the raw materials Water, stir evenly, machine press molding under the condition of 60~80MPa, dry the molded green body at 100~150℃ for 12~24 hours, raise the temperature to 1250~1280℃, keep it warm for 2~4 hours, and make porous viola Bluestone-mullite composite.

[0025] Step 2, breaking the obtained porous cordierite-mullite composite material into porous cordierite-mullite composite material particles with a particle size of 2-1 mm, and porous cordierite-mullite composite material with a particle size of 1-0.088 mm Material particles and porous cordierite-mullite composite material powder with particle size less than 0.088mm.

[0026] Step 3, with 20~40wt% of porous cordierite-mullite composite mat...

Embodiment 2

[0030] A light cordierite-mullite composite ceramic material and a preparation method thereof. The concrete steps of this method are:

[0031] Step 1, using 30~50wt% diaspore, 15~20wt% amorphous silica, 15~20wt% talcum powder and 20~30wt% clay as raw materials, plus 5~7wt% of the raw materials Water, stir evenly, machine press molding under the condition of 60~80MPa, dry the molded green body at 150~300℃ for 24~36 hours, raise the temperature to 1280~1320℃, keep it warm for 4~6 hours, and make porous viola Bluestone-mullite composite.

[0032]Step 2, breaking the obtained porous cordierite-mullite composite material into porous cordierite-mullite composite material particles with a particle size of 2-1 mm, and porous cordierite-mullite composite material with a particle size of 1-0.088 mm Material particles and porous cordierite-mullite composite material powder with particle size less than 0.088mm.

[0033] Step 3, with 30~50wt% of porous cordierite-mullite composite mater...

Embodiment 3

[0037] A light cordierite-mullite composite ceramic material and a preparation method thereof. The concrete steps of this method are:

[0038] Step 1, using 50-70wt% diaspore, 15-25wt% amorphous silica, 5-15wt% talcum powder and 10-20wt% clay as raw materials, plus 3-5wt% of the raw materials Water, stir evenly, machine press molding under the condition of 80~100MPa, dry the molded green body at 150~300℃ for 12~24 hours, raise the temperature to 1300~1350℃, keep it warm for 2~4 hours, and make porous viola Bluestone-mullite composite.

[0039] Step 2, breaking the obtained porous cordierite-mullite composite material into porous cordierite-mullite composite material particles with a particle size of 2-1 mm, and porous cordierite-mullite composite material with a particle size of 1-0.088 mm Material particles and porous cordierite-mullite composite material powder with particle size less than 0.088mm.

[0040] Step 3, with 40~50wt% of porous cordierite-mullite composite mate...

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Abstract

A light cordierite-mullite composite ceramic material and a preparation method thereof. The scheme is: use 20~70wt% diaspore, 10~30wt% amorphous silica, 5~30wt% talcum powder and 10~40wt% clay as raw materials, add raw materials 3~10wt% water, stir, shape, drying and heat preservation at 1250-1350°C for 2-6 hours to prepare a porous cordierite-mullite composite material. Then use the particles of the composite material with a particle size of 2~1mm and 1~0.088m as the aggregate, use the powder with a particle size of less than 0.088m as the matrix, add dextrin and water, mix, shape, and dry at 1250~1350°C Under the condition of heat preservation for 2 to 6 hours, a lightweight cordierite-mullite composite ceramic material is prepared. The invention has the characteristics of low cost, environmental friendliness, energy saving and environmental protection, and controllable chemical composition. The product has a small volume density, uniform phase composition and pore size distribution, excellent normal temperature mechanical properties, good high temperature performance and high thermal shock resistance. .

Description

technical field [0001] The invention belongs to the technical field of lightweight composite ceramic materials. Specifically relates to a light cordierite-mullite composite ceramic material and a preparation method thereof. Background technique [0002] With the rapid development of the ceramic industry, ceramic products tend to be high-quality, high-yield and low-consumption, and the firing process tends to be fast-firing technology, which makes cordierite-mullite kiln furniture materials widely popularized. At present, there have been many researches on cordierite-mullite kiln furniture at home and abroad, and its manufacturing methods can generally be summarized into the following three types: (1) Pre-synthesize cordierite and mullite clinker separately, as aggregate (2) Pre-synthesize mullite clinker as aggregate, and then generate cordierite in situ in the matrix; (3) Direct in situ synthesis of cordierite-mullite composites . The first two types are mainly used in i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/195C04B35/185C04B35/622C04B35/66
Inventor 梁峰叶林峰赵雷薛正良方伟王富成陈辉陈欢
Owner WUHAN UNIV OF SCI & TECH
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