Ceramic fiber insulation material and preparation method thereof

Abstract

The invention relates to a ceramic fiber insulation material and a preparation method thereof. A technical scheme is as below: evenly mixing an aluminiferous material, a silicon-containing materials, a zinc-containing material and a binder, and molding; conducting heat treatment at 800-1200 DEG C for 3-6 h, grinding and sieving to obtain a material A and a material B; mixing and milling the material A, the binder and an additive, adding ceramic fiber and water, stirring, and casting; and drying, conducting heat treatment at 400-700 DEG C for 3-6 h, crushing, and sieving to obtain a material C; mixing the material A, the material B, the material C, the ceramic fiber, the binder, an inorganic thickener and the additive, adding water, stirring, extruding for moulding, drying at 50-80 DEG C, conducting heat treatment for 3-6 h at 1000-1300 DEG C to obtain the ceramic fiber heat insulation material. The invention has the advantages of wide source of raw materials, and low production cost; and the prepared ceramic fiber insulation material has the advantages of high strength, small volume density and low thermal conductivity.

Description

technical field [0001] The invention belongs to the technical field of refractory materials. In particular, it relates to a ceramic fiber thermal insulation material and a preparation method thereof. Background technique [0002] Ceramic fiber is a kind of fibrous lightweight refractory material. The thermal insulation material made of ceramic fiber has the advantages of high temperature resistance, good thermal stability, low thermal conductivity and mechanical vibration resistance. Therefore, it is used in machinery, metallurgy, petrochemical, building materials, etc. It has been widely used in industries such as electronics and electronics, and the research on ceramic fibers has also attracted more and more attention from those skilled in the art: "A low thermal conductivity heat insulation material and its preparation method" (ZL200810138024.8) patent technology , adding basalt fiber into water and stirring into slurry, adding potassium hexatitanate whiskers, binders, a...

AI Technical Summary

Problems solved by technology

[0003] The above technology has certain advantages, but still has the following disadvantages: (1) The introduced organic additives, adhesives or binders are carbonized and decomposed at high temperatures, producing thick smoke and irritating gases, polluting the environment; Decomposition, which reduces the service life of the product; (3) The strength is small, and it is prone to compression and deformation after being subjected to external stress, mechanical vibration or airflow erosion, which affects the structural stability of the thermal insulation lining and weakens the thermal insulation effect; (4) Potassium titanate crystal Whiskers, microbeads, etc. are introduced in the form of direct addition, and their distribution form cannot be controlled in the material. They can only be distributed among the ceramic fibers in the form of "scattering", which significantly affects the thermal insulation effect of the material.