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Preparation method of quartz ceramic rotary body

A quartz ceramic and rotary body technology is applied in the field of preparation of quartz ceramic rotary bodies, which can solve the problems of cracks, affecting product quality and service life, and large shrinkage of the green body.

Active Publication Date: 2022-04-08
SHANDONG RES & DESIGN ACADEMY OF IND CERAMICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the traditional injection molding method is used to prepare a large-sized (thickness greater than 50mm) rotary body, due to the high water content of the quartz ceramic body and the large shrinkage of the body, cracks are prone to appear during the firing process, which affects product quality and use. life

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  • Preparation method of quartz ceramic rotary body

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Effect test

Embodiment 1

[0045] This embodiment provides a method for preparing a quartz ceramic revolving body, comprising the following steps:

[0046] (1) Preparation of slurry

[0047] First mixing: Mix 36 parts of 50-mesh fused silica sand, 22 parts of pure water, 20 parts of silica sol, 7 parts of nano-alumina, 0.5 part of sintering aid, and 0.25 part of stabilizer, and then ball mill. As an optional solution, the material of the grinding balls is alumina balls, and the weight ratio of the alumina balls to the first slurry is (1-1.5):1. Preferably in this embodiment, the weight ratio of the alumina balls to the first slurry is 1:1. Alternatively, the sintering aid may be alkali metal lactate or alkali metal oxalate, and the stabilizer may be lactic acid or oxalic acid. Preferably in this embodiment, the sintering aid is sodium oxalate, and the stabilizer is oxalic acid. After ball milling for 30 hours, 68 parts of 50-mesh fused silica sand were added again, and ball milling was continued for ...

Embodiment 2

[0054] This embodiment provides a method for preparing a quartz ceramic revolving body, comprising the following steps:

[0055] (1) Preparation of slurry

[0056] First mixing: Mix 27 parts of 100-mesh fused silica sand, 18 parts of pure water, 12 parts of silica sol, 4 parts of nano-alumina, 0.2 part of sintering aid, and 0.1 part of stabilizer, and then ball mill. As an optional solution, the material of the grinding balls is alumina balls, and the weight ratio of the alumina balls to the first slurry is (1-1.5):1. Preferably in this embodiment, the weight ratio of alumina balls to the first slurry is 1.25:1. Alternatively, the sintering aid may be alkali metal lactate or alkali metal oxalate, and the stabilizer may be lactic acid or oxalic acid. Preferably in this embodiment, the sintering aid is sodium oxalate, and the stabilizer is oxalic acid. After ball milling for 20 hours, add 55 parts of 100-mesh fused silica sand again, and continue ball milling for 30 hours to ...

Embodiment 3

[0063] This embodiment provides a method for preparing a quartz ceramic revolving body, comprising the following steps:

[0064] (1) Preparation of slurry

[0065] First mixing: Mix 17 parts of 10-mesh fused silica sand, 15 parts of pure water, 5 parts of silica sol, 2 parts of nano-alumina, 0.01 part of sintering aid, and 0.02 part of stabilizer, and then ball mill. As an optional solution, the material of the grinding balls is alumina balls, and the weight ratio of the alumina balls to the first slurry is (1-1.5):1. Preferably in this embodiment, the weight ratio of the alumina balls to the first slurry is 1.5:1. Alternatively, the sintering aid may be alkali metal lactate or alkali metal oxalate, and the stabilizer may be lactic acid or oxalic acid. Preferably in this embodiment, the sintering aid is sodium oxalate, and the stabilizer is oxalic acid. After ball milling for 5 hours, add 42 parts of 10-mesh fused silica sand again, and continue ball milling for 8 hours to ...

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Abstract

The invention discloses a quartz ceramic rotary body preparation method, which comprises: uniformly mixing fused quartz sand, water, silica sol, nanometer alumina, a stabilizer and a sintering aid according to a certain ratio, and carrying out ball milling; adding the fused quartz sand again, and continuing ball milling to obtain first slurry; adding coarse quartz powder, an organic monomer, a cross-linking agent and a dispersing agent into the first slurry, and uniformly mixing to obtain second slurry; performing vacuum treatment on the second slurry, and adding an initiator; the second slurry is subjected to injection molding and heating curing, demolding is conducted after curing is completed, and a green body is obtained; and drying and sintering the green body to obtain the quartz ceramic rotary body.

Description

technical field [0001] The invention belongs to the field of preparation of ceramic materials, in particular to a preparation method of a quartz ceramic revolving body. Background technique [0002] Quartz ceramic is a ceramic material with high strength, small high temperature thermal expansion coefficient, and excellent thermal shock resistance. It also has excellent dielectric properties such as broadband, high wave transparency, and low dielectric loss. It can be used as a Structural ceramics and wave-transparent functional ceramics are used. In the process of being used as a wave-transparent material, compared with organic wave-transparent products, it has the characteristics of high temperature resistance and high strength. Compared with other ceramic ceramics, its wave-transparent dielectric properties are better and excellent, and its thermal properties, especially The thermal expansion coefficient is lower, the thermal conductivity is smaller, and the dielectric co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/14C04B35/622C04B35/64C04B35/81
Inventor 曹俊倡杨显锋栾强王洪升邢政鹏崔唐茵陈东杰
Owner SHANDONG RES & DESIGN ACADEMY OF IND CERAMICS
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