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Preparation method of lightweight ceramic composite sheet

A technology of composite thin plates and lightweight ceramics, applied in ceramic products, applications, household appliances, etc., can solve the problems of composite material cost, difficult preparation process, application of architectural ceramics, etc., to increase strength, reduce self-weight, avoid cracking and deformation effect

Active Publication Date: 2019-07-05
MONALISA GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the cost and preparation process of the composite material are difficult to apply in the architectural ceramics industry

Method used

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  • Preparation method of lightweight ceramic composite sheet
  • Preparation method of lightweight ceramic composite sheet
  • Preparation method of lightweight ceramic composite sheet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] A light-weight ceramic composite sheet and a preparation method thereof, comprising the following steps:

[0054] 1) Add 100g of polycrystalline mullite fiber and 100g of silica sol into 2000ml of water and stir to disperse to prepare a fiber dispersion;

[0055] 2) SiO 2 Ceramic powder with a content of 35%, mullite content of 35%, and corundum powder content of 30% is ball milled and granulated, and then sieved to select a powder with a particle size of <100 mesh. Add 300g of ceramic powder to the fiber dispersion, keep stirring during the addition, and prepare a mixed suspension;

[0056] 3) Vacuum filtration will be used, and the mixed suspension will be poured into a vacuum filtration device with a vacuum degree of 10 Pa and a filtration time of 5 minutes. After the filtration, a fiber-reinforced ceramic green body is obtained, and the thickness is controlled at 8mm;

[0057] 4) The fiber-reinforced ceramic biscuit is statically pressed in a press, the applied pr...

Embodiment 2

[0064] A light-weight ceramic composite sheet and a preparation method thereof, comprising the following steps:

[0065] 1) Add 100g of polycrystalline mullite fiber and 50g of silica sol into 1000ml of water and stir to disperse and prepare fiber dispersion;

[0066] 2) SiO 2 The ceramic powder with a powder content of 45%, a mullite powder content of 45%, and a corundum powder content of 10% is ball milled and granulated, and then screened to select a powder with a particle size of <100 mesh. Add 200g of ceramic powder to the fiber dispersion, keep stirring during the addition, and prepare a mixed suspension;

[0067] 3) Vacuum filtration will be used, and the mixed suspension will be poured into a vacuum filtration device with a vacuum degree of 100 Pa and a filtration time of 10 minutes. After the filtration, a fiber-reinforced ceramic green body is obtained, and the thickness is controlled at 5 mm;

[0068] 4) The fiber-reinforced ceramic biscuit is statically pressed i...

Embodiment 3

[0075] A light-weight ceramic composite sheet and a preparation method thereof, comprising the following steps:

[0076] 1) Add 100g of polycrystalline mullite fiber, 40g of silica sol, and add 1500ml of water to stir and disperse to prepare a fiber dispersion;

[0077] 2) SiO 2Ceramic powder with a powder content of 40%, mullite powder content of 40%, and corundum powder content of 20% is ball milled and granulated, and then screened to select a powder with a particle size of <100 mesh. Add 500g of ceramic powder to the fiber dispersion, keep stirring during the addition, and prepare a mixed suspension;

[0078] 3) Vacuum filtration will be used, and the mixed suspension will be poured into a vacuum filtration device with a vacuum degree of 50 Pa and a filtration time of 8 minutes. After the filtration, a fiber-reinforced ceramic green body is obtained, and the thickness is controlled at 8mm;

[0079] 4) The fiber-reinforced ceramic biscuit is statically pressed in a press,...

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Abstract

The invention provides a preparation method of a lightweight ceramic composite sheet. The method comprises the following steps: (1) uniformly mixing polycrystalline mullite fibers, a binding agent andthe water to prepare a fiber dispersion liquid; and (2) adding ceramic powder into the obtained fiber dispersion liquid to prepare a mixed suspension; (3) pouring the obtained mixed suspension into avacuum suction filtration device, and performing vacuum suction filtration to obtain a fiber reinforced ceramic biscuit; (4) performing biscuit firing on the obtained fiber reinforced ceramic biscuitto obtain a ceramic sheet blank body; (5) putting the obtained ceramic sheet blank body into a vacuum suction filtration device, pouring a suspension containing ceramic powder and a binding agent, and performing vacuum infiltration treatment to obtain a vacuum-infiltrated ceramic sheet blank body; and (6) performing sintering on the obtained vacuum-infiltrated ceramic sheet blank body to obtain the lightweight ceramic composite sheet. The method provided by the invention can greatly improve a volume fraction of fibers in the ceramic sheet, effectively avoid damage to the fibers, and improve the strengthening and toughening effects of the fibers.

Description

technical field [0001] The invention belongs to the technical field of ceramic material preparation, and in particular relates to a lightweight ceramic composite thin plate and a preparation method thereof. Background technique [0002] With its characteristics of energy saving and consumption reduction, clean and environmental protection, light weight and high strength, ceramic thin plates have brought about major changes in traditional architectural ceramics. The thinning of architectural ceramics has become the future development trend of the industry. However, at present, ceramic thin plates mainly rely on adjusting the ratio of raw materials, and use high-tonnage presses to reduce the porosity of ceramic bodies to improve the strength and toughness of thin plates. The high cost of raw materials and high equipment requirements limit the popularization and application of ceramic thin plates. Fiber reinforcement is an effective means to improve the strength and toughness o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/14C04B35/80C04B38/00
CPCC04B35/803C04B35/14C04B38/0045C04B2235/3217C04B2235/3463C04B2235/5228C04B2235/616C04B2235/77C04B2235/775C04B2235/96C04B38/0067
Inventor 萧礼标欧阳海波黄玲艳汪庆刚黄剑锋李嘉胤
Owner MONALISA GRP CO LTD