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High-strength steatite porcelain

A high-strength, talc technology, applied in the field of new ceramic materials, can solve the problems of low strength, narrow firing range, and poor anti-aging performance, and achieve high flexural strength, wide firing range, and good anti-aging performance.

Inactive Publication Date: 2014-07-09
HUNAN MEICHENG CERAMIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to overcome the defects of low strength, poor aging resistance and narrow firing range of existing talc porcelain materials, the present invention provides a high-strength talc porcelain material, which not only has high flexural strength, but is suitable for automatic mechanical devices Production line, and good anti-aging performance, wide range of firing temperature

Method used

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Embodiment Construction

[0009] First, the raw materials are weighed according to the following raw material weight percentage composition, namely calcined talc powder 45%, raw talc powder 35%, kaolin 12%, zinc oxide 2.5%, zirconium silicate 0.5%, barium carbonate 5%.

[0010] The process flow after batching is as follows: wet ball milling→spray drying→dry pressing molding→high temperature sintering→cleaning and inspection.

[0011] The talc is Haicheng talc, the calcination temperature of the talc powder is 1350°C, the kaolin is machine-selected Suzhou soil, and the zinc oxide, barium carbonate, and zirconium silicate are all industrially pure raw materials.

[0012] The firing temperature of the formula talc porcelain is 1300°C, the firing temperature range is 35°C, and the static flexural strength is 258MPa.

[0013]

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Abstract

The invention relates to a high-strength steatite porcelain. The high-strength steatite porcelain comprises talcum as a primary raw material, and also contains kaolin, zinc oxide, barium carbonate and zirconium silicate, and concretely comprises 40-50wt% of calcined talcum powder, 30-40wt% of uncalcined talcum powder, 1-4wt% of zinc oxide, 3-8wt% of barium carbonate and 0.1-1wt% of zirconium silicate. A production technology of the high-strength steatite porcelain comprises the steps of raw material burdening, wet ball milling, spray drying, dry-pressing molding and sintering, the firing temperature of the steatite porcelain obtained in the invention is 1300DEG C, the firing temperature range is 35DEG C, and the static rupture strength is 258MPa, and the steatite porcelain has the characteristics of good rupture strength and ageing resistance, and widened firing temperature.

Description

technical field [0001] The invention relates to a new ceramic material. In particular, it relates to a high-strength steatite ceramic material for device ceramics. Background technique [0002] Talc porcelain is usually a porcelain material with magnesium oxide-containing aluminosilicate as the main crystal phase. The raw materials used to produce talc porcelain mainly include talc, clay, and barium carbonate. Steatite porcelain has low dielectric constant, low dielectric loss tangent, high dielectric strength, high volume resistivity, and has a certain static bending strength and good chemical stability, acid resistance, alkali resistance, corrosion resistance, so it is used The advantages of steatite porcelain are even more displayed when used as high-frequency device porcelain components. However, with the expansion of the application range of talc porcelain, the shortcomings of the existing talc porcelain are revealed. First, the mechanical strength is not enough, espe...

Claims

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Application Information

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IPC IPC(8): C04B35/16C04B35/63
Inventor 贺亦文方豪杰
Owner HUNAN MEICHENG CERAMIC TECH
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