Preparation method of zirconic acid lanthanum ceramic fiber

A technology of ceramic fiber and lanthanum zirconate, which is applied in the field of preparation of lanthanum zirconate ceramic fiber, can solve the problems such as the preparation of lanthanum zirconate ceramic fiber, which has not been patented, hinders the practical application in the field of high temperature heat insulation, and has poor fiber flexibility. To achieve the effect of easy control of microstructure, good filamentation and stable properties
CN103553596BActive Publication Date: 2014-09-10SHANDONG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANDONG UNIV
Publication Date
2014-09-10

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Abstract

The invention relates to a preparation method of a zirconic acid lanthanum ceramic fiber. The method comprises the following steps: preparing a gel fiber through a colloidal sol centrifugal fiber forming technology by using zirconium nitrate as a zirconium source, lanthanum nitrate as a lanthanum source, citric acid as a chelating agent, and water as a solvent, and calcining the gel fiber to form the zirconic acid lanthanum ceramic fiber. A precursor prepared by the invention has stable colloidal sol property and is good in filamentation property with no need of adding a polymer spinning additive. The prepared zirconic acid lanthanum ceramic fiber is good in flexibility, compact in microstructure, good in phase stability an low in heat conductivity coefficient and can be used for high-temperature thermal-insulation material, and the crystal form of the zirconic acid lanthanum ceramic fiber is pyrochlore form.
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Description

technical field

[0001] The invention relates to a preparation method of lanthanum zirconate ceramic fiber, which belongs to the field of inorganic non-metallic materials. Background technique

[0002] In recent years, with the rapid development of aerospace technology and the need for energy saving and emission reduction, the requirements for thermal insulation materials are getting higher and higher. Among the various existing heat insulation materials, ceramic fiber has become the first choice for heat insulation materials due to its outstanding light weight and high temperature resistance. It has both the high temperature resistance of inorganic materials and the low thermal conductivity and low Density, high heat capacity, and various product forms, as a high-temperature insulation material, it has been widely used in various heat protection projects.

[0003] At present, the widely used high-temperature insulation fiber materials mainly include aluminum silicate-based ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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