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A kind of high-purity silica glass-ceramic material and preparation method thereof

A high-purity silica and glass-ceramic technology, applied to the preparation of the above-mentioned high-purity silica glass-ceramic materials, in the field of high-purity silica glass-ceramic materials, can solve the problem that quartz ceramics cannot be used for mutual welding and are difficult to use normally , large porosity and other problems, to achieve good heat insulation, excellent thermal shock resistance, and change the effect of thermal shock resistance

Active Publication Date: 2022-05-10
连云港神汇硅材料科技有限公司 +1
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  • Abstract
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  • Claims
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Problems solved by technology

[0003] However, the existing quartz ceramics not only have a rough surface but also have a large porosity, they cannot be used in some special environments, especially in high temperature environments, it is difficult to use normally, and quartz ceramics cannot be used for mutual welding

Method used

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Embodiment Construction

[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention , but not all examples. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0025] A high-purity silica glass-ceramic material, which is made by high-purity silica grouting molding process: the silica powder used in this process is mixed with three silica powders with different particle size distributions They are silica powder A, the particle size distribution range is 80nm-600nm; silica powder B, the particle size distribution range is 120nm-800nm;...

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Abstract

A high-purity silica glass-ceramic material, which is made by high-purity silica grouting molding process: the silica powder used in this process is mixed with three silica powders with different particle size distributions Silica powder A, the particle size distribution range is 80nm-600nm; Silica powder B, the particle size distribution range is 120nm-800nm; Silica powder C, the particle size distribution range is 200nm ‑1000nm; Specifically, fully mix three kinds of silica powders to prepare a uniform mixed powder, and then mix the powder with additives and water to make silica slurry, in which water and additives The content accounts for 15wt%-30wt% of the total mass of the slurry. This material fills the characteristics that quartz ceramics and quartz glass do not have. Its thermal shock resistance and thermal insulation are better than that of quartz glass and quartz ceramics, and its cost performance is higher than that of quartz glass and quartz ceramics.

Description

technical field [0001] The invention relates to the technical field of high-purity silica production, in particular to a high-purity silica glass-ceramic material, and specifically to a method for preparing the above-mentioned high-purity silica glass-ceramic material. Background technique [0002] Quartz ceramics is a sintered body made of fused quartz block as raw material, which is fired through a series of processes such as crushing, particle classification, ball milling, grouting and firing. Products with appearance requirements will also be processed by cold processing. The finished product has poor thermal conductivity, expansion coefficient and unstable thermal stability. [0003] However, the existing quartz ceramics not only have a rough surface but also have a large porosity, so they cannot be applied in some special environments, especially in high temperature environments, it is difficult to use normally, and quartz ceramics cannot be used for mutual welding. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C10/14
CPCC03C10/0009
Inventor 陈怀斌
Owner 连云港神汇硅材料科技有限公司
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