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High-performance Al4SiC4 fiber and preparation process thereof

A preparation process and high-performance technology, applied in the field of fiber preparation, can solve the problems of high cost and difficulty in industrialized preparation of fibers, and achieve the effects of high melting point, overcoming difficulty in preparation and low thermal expansion coefficient.

Pending Publication Date: 2019-11-12
程铃釜
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of this, the purpose of the present invention is to provide a high-performance Al 4 SiC 4 Fiber and its preparation process overcome the current Al 4 SiC 4 Due to the difficulty and high cost of industrial fiber preparation, the Al 4 SiC 4 Large-scale and industrial production of fibers

Method used

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  • High-performance Al4SiC4 fiber and preparation process thereof
  • High-performance Al4SiC4 fiber and preparation process thereof
  • High-performance Al4SiC4 fiber and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] a) molding, mixing bauxite and silica according to the ratio of 65% by weight: 20% and then putting them into a molding machine, controlling the molding particle size to be 30mm-50mm, and forming mixture A after compression molding;

[0027] b) batching, according to the weight ratio of mixture A and carbonaceous reducing agent is 1:0.20, carbonaceous reducing agent is added to the mixture, after mixing to form mixture B, said carbonaceous reducing agent is coke and charcoal with a weight ratio of 1 : Mixed at a ratio of 1.5.

[0028] Such as Figure 1-2 As shown, the following steps are also included:

[0029] c) Melting reduction, put the mixture B into the melting furnace 1, and in the state of nitrogen or argon closed oxygen barrier, control the temperature to be 1700°C-2200°C for melting, and form a molten liquid after melting, and flow into the heat preservation container 2 , and then flow out from the nozzle 7 of the heat preservation container, the temperature...

Embodiment 2

[0034] a) Forming, mixing bauxite and silica according to the ratio of 80% by weight: 35% and then putting it into a molding machine, controlling the molding particle size to be 30mm-50mm, and forming a mixture A after pressing;

[0035] b) batching, according to the weight ratio of mixture A and carbonaceous reducing agent is 1:0.35, carbonaceous reducing agent is added to the mixture, after mixing to form mixture B, said carbonaceous reducing agent is coke and charcoal with a weight ratio of 1 : 2 ratio mixed.

[0036] Such as Figure 1-2 As shown, the following steps are also included:

[0037] c) Melting reduction, put the mixture B into the melting furnace 1, and in the state of nitrogen or argon closed oxygen barrier, control the temperature to be 1700°C-2200°C for melting, and form a molten liquid after melting, and flow into the heat preservation container 2 , and then flow out from the nozzle 7 of the heat preservation container, the temperature of the molten liquid...

Embodiment 3

[0042] a) molding, mixing bauxite and silica according to the ratio of 70% by weight: 28% and then putting them into a molding machine, controlling the molding particle size to be 30mm-50mm, and forming a mixture A after compression molding;

[0043] b) batching, according to the weight ratio of mixture A and carbonaceous reducing agent is 1:0.50, carbonaceous reducing agent is added to the mixture, after mixing to form mixture B, said carbonaceous reducing agent is composed of coke and carbon in a weight ratio of 3 : Mixed at a ratio of 2.2.

[0044] Such as Figure 1-2 As shown, the following steps are also included:

[0045] c) Melting reduction, put the mixture B into an ultra-high temperature pyrolysis gasification reduction melting furnace, in the state of nitrogen or argon sealing oxygen, control the temperature at 1700°C-2100°C for melting, and form a molten liquid after melting , flows into the insulation container 2, and then flows out from the nozzle 7 of the insu...

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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Abstract

The invention discloses a high-performance Al4SiC4 fiber and a preparation process thereof. The high-performance Al4SiC4 fiber is prepared from the following raw materials by weight: 65%-80% of bauxite and 20%-35% of silica. The preparation process for the high-performance Al4SiC4 fiber has the advantages of abundant raw material resources, low production cost and easiness in realizing industrialproduction, overcomes the defects of high difficulty and high cost in industrial preparation of the Al4SiC4 fiber in the prior art, and realizes large-scale and industrial production of the Al4SiC4 fiber. The high-performance Al4SiC4 fiber prepared by using the process of the invention has excellent performance and has high anti-torsion properties and tensile properties, and can be widely appliedin fields like aviation, aerospace, automobiles, rail traffic, navigation and oceanographic engineering.

Description

technical field [0001] The invention belongs to the technical field of fiber preparation, in particular to a high-performance Al 4 SiC 4 Fiber and its preparation process. Background technique [0002] al 4 SiC 4 With high melting point, high chemical stability, high strength, low thermal expansion coefficient and excellent high temperature strength, oxidation resistance and hydration resistance, it is a promising high temperature structure and high performance material to be developed. At present, Al is synthesized at home and abroad 4 SiC 4 The materials are mainly based on solid state reaction sintering method, hot pressing sintering method, high temperature self-propagating method, infiltration method and mechanical alloying method. Although there are many synthetic methods, Al 4 SiC 4 The industrial preparation of fibers is difficult and costly. At present, the preparation of Al 4 SiC 4 Fiber research has not been extensively carried out. Contents of the inv...

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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/56C04B35/622
CPCC04B35/56C04B35/62272C04B2235/658C04B2235/6583C04B2235/77C04B2235/96
Inventor 程凤岐赵心明程铃釜
Owner 程铃釜
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