Low-expansion building ceramic material and preparation method thereof

Abstract

The invention discloses a low-expansion building ceramic material. The low-expansion building ceramic material comprises, by weight, 5-10 parts of alumina, 7-10 parts of magnesium oxide, 3-7 parts of titanium dioxide, 4-8 parts of germanium pentoxide, 3-6 parts of manganese dioxide, 4-9 parts of molybdenum tungstate, 2-6 parts of niobium phosphate, 1-4 parts of vanadium silicate, 2-5 parts of tin sulfate, 5-11 parts of Astragalus sinicus and 10-20 parts of ethyl orthosilicate. The ceramic material has the advantages of low heat expansion coefficient and high strength, the average heat expansion coefficient at 0-850 DEG C is 5.0-8.5 * 10<-7> / DEG C, and the flexural strength of the ceramic material at 0-850 DEG C is 95-105 Mpa.

Description

Technical field

[0001] The invention belongs to the field of ceramic materials, and particularly relates to a low-expansion building ceramic material and a preparation method thereof. Background technique

[0002] Ceramic materials are a class of inorganic non-metallic materials made of natural or synthetic compounds through forming and high-temperature sintering. It has the advantages of high melting point, high hardness, high wear resistance and oxidation resistance. It can be used as structural material and tool material, and because ceramics also has some special properties, it can also be used as a functional material. Common materials are sintered from natural raw materials such as feldspar, clay and quartz. They are typical silicate materials. The main components are silicon, aluminum, and oxygen. These three elements account for 90% of the total crustal elements. The source of ceramics is abundant, the cost is low, and the technology is mature. This type of ceramics ca...