Preparation process for composite continuous ceramic fiber

A continuous fiber and composite ceramic technology, which is applied in the field of ceramic continuous fiber preparation technology, can solve the problems of unavailable fibers, low fiber strength, and short fiber length, and achieve the effects of improved stability, high strength, and dense fiber cross-section

Inactive Publication Date: 2012-10-17
SHAANXI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The current research results show that the stability of the sol prepared by the sol-gel method is poor, the obtained fiber strength is low, the length of the fiber is short, and continuous fibers cannot be obtained.

Method used

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  • Preparation process for composite continuous ceramic fiber
  • Preparation process for composite continuous ceramic fiber
  • Preparation process for composite continuous ceramic fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] The preparation technology of composite ceramic continuous fiber of the present invention comprises the following steps:

[0025] In the first step, silica sol, magnesium oxide, zirconium oxychloride, end-capping agent and spinning aid are added to alumina sol to prepare ceramic fiber precursor sol.

[0026] Table 1 lists the formula composition in the first step process of 10 specific examples numbered 1-10.

[0027] According to different examples in Table 1, the types and amounts of alumina sol, silica sol, magnesium oxide, zirconium oxychloride, end-capping agent and spinning aid were determined.

[0028] In the second step, a reinforcing material is added to the ceramic fiber precursor sol to obtain a composite sol;

[0029] In the third step, the composite sol is concentrated at 40-100°C.

[0030] Table 2 lists the process conditions of the second and third steps of the different examples in Table 1, determine the type and amount of the reinforcing phase, and pr...

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Abstract

The invention discloses a preparation process for a composite continuous ceramic fiber. The process is characterized in that a reinforcing material is added into precursor sol of a ceramic fiber, the reinforcing material and the precursor sol are fully mixed under stirring, an obtained composite solution is condensed to obtain spinnable precursor composite sol, the technique of plastic extrusion spinning is employed to process the condensed composite sol so as to obtain continuous fiber ceramic protofilament containing the reinforcing material and finally the protofilament is dried and sintered so as to obtain the composite continuous ceramic fiber. The ceramic fiber prepared in the invention is applicable to the fields of aerospace, automobiles, stationary and sports goods and can be used as reinforcement of a composite material.

Description

technical field [0001] The invention relates to a preparation process for ceramic continuous fibers that can be used as winding, lamination or other two-dimensional and three-dimensional weaving. Background technique [0002] Ceramic fiber is a fibrous material, its diameter is generally 2 to 50 μm, and the surface of the fiber is smooth and cylindrical. The varieties of ceramic fibers mainly include ordinary aluminum silicate fiber, high aluminum aluminum silicate fiber, aluminum silicate fiber, polycrystalline alumina fiber and polycrystalline mullite fiber [Modern Technical Ceramics, 2012, (1): 25- 31]. [0003] Ceramic fiber has the advantages of light weight, high temperature resistance, good thermal stability, low thermal conductivity, small specific heat and mechanical shock resistance, so it is widely used in petrochemical, metallurgy, electric power, aviation, aerospace, fire protection, home appliances, automobiles, ships, etc. each field. With the improvement o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/622C04B35/80C04B35/10
Inventor 谭宏斌马小玲
Owner SHAANXI UNIV OF TECH
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