Auxiliary preparation process of spinnable and weavable long continuous zirconia fiber

A preparation process and continuous fiber technology, which is applied in the field of auxiliary preparation process of zirconia long continuous fiber, can solve the problems of non-stretchable inorganic fiber, weaving mechanical properties need to be improved, etc. The effect of simple process

Inactive Publication Date: 2015-02-18
NANHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Domestic Luoyang Refractory Research Institute, Shandong Industrial Ceramics Research and Design Institute, Shandong University, Nanjing University of Science and Technology, and Donghua University have all carried out research work on zirconia peroxide fibers and have made some progress. However, due to excessive pursuit of spinnability and inorganic The non-stretchability of the fiber, its weavability and mechanical properties after crystallization still need to be improved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] In this embodiment, spinnable and weavable zirconia long continuous fibers are prepared in the following manner:

[0022] (1) Combine zirconia nanopowder with Y 2 o 3 Nano powder, MgO nano powder and Al 2 o 3 The nano powders are mixed in a molar ratio of 0.925:0.05:0.02:0.005 to obtain composite zirconia nano powders (ZrO 2 ) 0.925 -(Y 2 o 3 ) 0.05 -(Al 2 o 3 ) 0.005 -(MgO) 0.02 ;

[0023] (2) Mix starch and composite zirconia nanopowder into deionized water under stirring, and stir for 45 minutes to obtain a precursor; the mass of starch is 10% of the mass of composite zirconia nanopowder, and the volume of water is equal to 8 times the total volume of zirconium nanopowder; the mass of amylose in starch accounts for 60%, and the mass of amylopectin accounts for 40%;

[0024] (3) Add 15vol% polyglucosamine-polyvinyl alcohol-acetic acid mixed solution to the precursor to obtain a slurry with a viscosity of 5Pa s; polyvinyl alcohol in the polyglucosamine-pol...

Embodiment 2

[0029] In this embodiment, spinnable and weavable zirconia long continuous fibers are prepared in the following manner:

[0030] (1) Combine zirconia nanopowder with Y 2 o 3 Nano powder, MgO nano powder and Al 2 o 3 The nano powders are mixed according to the atomic weight ratio of 0.905:0.06:0.025:0.01 to obtain composite zirconia nano powders (ZrO 2 ) 0.905 -(Y 2 o 3 ) 0.06 -(Al 2 o 3 ) 0.01 -(MgO) 0.025 ;

[0031] (2) Mix starch and composite zirconia nanopowder into deionized water under stirring, and stir for 60 minutes to obtain a precursor; the mass of starch is 13% of the mass of composite zirconia nanopowder, and the volume of water is equal to 10 times the total volume of zirconium nanopowder; the mass of amylose in starch accounts for 70%, and the mass of amylopectin accounts for 30%;

[0032] (3) Add 30vol% polyglucosamine-polyvinyl alcohol-acetic acid mixed solution to the precursor to obtain a slurry with a viscosity of 8 Pa s; polyvinyl alcohol in t...

Embodiment 3

[0037] In this embodiment, spinnable and weavable zirconia long continuous fibers are prepared in the following manner:

[0038] (1) Combine zirconia nanopowder with Y 2 o 3 Nano powder, MgO nano powder and Al 2 o 3 The nano powders are mixed according to the atomic weight ratio of 0.885:0.07:0.03:0.015 to obtain composite zirconia nano powders (ZrO 2 ) 0.885 -(Y 2 o 3 ) 0.07 -(Al 2 o 3 ) 0.015 -(MgO) 0.03 ;

[0039] (2) Mix starch and composite zirconia nanopowder into deionized water under stirring, and stir for 60 minutes to obtain a precursor; the mass of starch is 15% of the mass of composite zirconia nanopowder, and the volume of water is equal to 12 times the total volume of zirconium nanopowder; the mass of amylose in starch accounts for 80%, and the mass of amylopectin accounts for 20%;

[0040] (3) Add 45vol% polyglucosamine-polyvinyl alcohol-acetic acid mixed solution to the precursor to obtain a slurry with a viscosity of 10Pa s; polyvinyl alcohol in the...

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Abstract

The invention discloses an auxiliary preparation process of spinnable and weavable long continuous zirconia fiber. The auxiliary preparation process is characterized in that zirconia nanopowder is mixed with Y2O3 nanopowder, MgO nanopowder and Al2O3 nanopowder to obtain composite zirconia nanopowder, starch and water are added into the composite zirconia nanopowder, a glucosaminoglycan-polyvinyl alcohol-acetic acid mixed solution is added after the mixture is stirred, slurry is obtained, pressurized, heated and sprayed to form filaments by a spiral nozzle, and the filaments are wound after macromolecule polymerization, liquid bath and air cooling to obtain the long continuous zirconia fiber. The auxiliary preparation process is simple, doesn't contain complicated chemical technologies in the preparation process, and is lower in cost and high in product yield.

Description

technical field [0001] The present invention relates to a kind of zirconia (ZrO 2 ) The auxiliary preparation process of long continuous fiber belongs to the field of composite material preparation. Background technique [0002] Zirconia (ZrO 2 ) Continuous fiber has important application requirements in aerospace and other special fields, such as for the nose cone and wing leading edge of the space shuttle, engine throat, inner lining and nozzle, precious metal melting furnace, atomic energy reactor, magnetic fluid power generation insulation, Thermionic, induction furnace, microwave sintering and other ultra-high temperature insulation materials. [0003] Zirconia fibers with a length greater than lm are usually referred to as long continuous zirconia fibers. The method for preparing continuous zirconia fibers in the world is basically the precursor method. Among them, the fiber structure obtained by the solution impregnation method is relatively loose and the strength...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F9/08D01D1/02D01D5/06
Inventor 胡永刚赵玉宝肖建中
Owner NANHUA UNIV
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