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A method of improving strength and windability of zirconia continuous fibers

A technology of continuous fiber and zirconia, which is applied in the field of inorganic non-metallic oxide fiber materials, can solve the problems of insufficient windability and poor winding performance of continuous fiber of zirconia, which is beneficial to classification, improved mechanical properties, The effect of improving mechanical properties

Active Publication Date: 2019-11-22
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the above-mentioned method pays insufficient attention to the strength and windability of the zirconia continuous fiber, and the strength of the obtained zirconia continuous fiber needs to be further improved, and the winding performance is not good

Method used

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  • A method of improving strength and windability of zirconia continuous fibers
  • A method of improving strength and windability of zirconia continuous fibers
  • A method of improving strength and windability of zirconia continuous fibers

Examples

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Effect test

preparation example Construction

[0055] (1) Preparation of zirconium polyacetylacetonate precursor

[0056] ① Weigh 100g zirconium oxychloride ZrOCl 2 ·8H 2 O, dissolve in absolute ethanol according to the ratio of zirconium oxychloride: absolute ethanol = 100g: 640g, measure acetyl Acetone 31.1g and triethylamine 60.9g, first acetylacetone is slowly added in the ethanolic solution of zirconium oxychloride, fully stirs to form mixed solution; Then the mixed solution of triethylamine and ethanol (mixing ratio is 60.9g three Ethylamine: 160g ethanol) was slowly added to the above mixed solution, fully reacted and stirred for 2 hours to obtain a golden yellow reaction solution, that is, a solution containing zirconium polyacetylacetonate.

[0057] ②Concentrate under reduced pressure to remove the solvent ethanol and water at a temperature of 40-45°C and a vacuum of 0.09MPa until a light yellow powder is obtained. Add acetone according to the ratio of zirconium oxychloride: acetone = 100g: 300ml to dissolve the...

Embodiment 1

[0067] A method for improving the strength and windability of continuous zirconia fibers, comprising the following steps:

[0068] The zirconia continuous fiber was quickly entered into the high temperature zone of 1300°C, the residence time in the high temperature zone was 2s, and the tension was 50cN, and then the fiber was directly placed at room temperature to cool. The measured tensile strength of monofilament fiber is about 1.5GPa. SEM photos as figure 2 As shown, the grain distribution diagram is shown in image 3 shown. Depend on figure 2 , 3 It can be seen that after the treatment of this embodiment, the fibers are dense and uniform, and the fiber grain size is small, mainly distributed in the range of 80-100 nm.

[0069] The zirconia continuous fibers cooled to room temperature are wound in an orderly manner, the winding line speed is controlled to be 1000mm / min, the tension is 150cN, and the fiber rolls are orderly and have a certain degree of bulkiness.

Embodiment 2

[0071] As described in Example 1, the difference is that the continuous zirconia fiber enters the high temperature zone at 1400°C quickly, the residence time in the high temperature zone is 10s, the tension is 100cN, and then the fiber is directly placed at room temperature to cool. The measured tensile strength of the monofilament fiber is about 2.0GPa, up to 3.0GPa.

[0072] The zirconia continuous fibers cooled to room temperature are wound in an orderly manner, the winding line speed is controlled to 2000mm / min, the tension is 250cN, and the fiber rolls are orderly and tightly arranged.

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Abstract

The invention relates to a method for improving the strength and the windability of zirconia continuous fibers, which comprises the following steps: quickly transferring the zirconia continuous fibersto a high-temperature area of 1200-1500 DEG C, standing for a period of time, and quickly cooling in a room-temperature environment. According to the zirconium oxide continuous fiber treated by the method, the tensile strength of monofilaments of the treated zirconium oxide continuous fiber is 2-3 times that of monofilaments treated by a slow heating program, and the mechanical property is obviously improved.

Description

technical field [0001] The invention relates to a method for improving the strength and windability of zirconia continuous fibers, in particular to a method for preparing high-strength zirconia continuous fibers by using a polyacetylacetonate zirconium system, and performing treatment to improve the strength and windability of zirconia continuous fibers The entanglement method belongs to the technical field of inorganic non-metallic oxide fiber materials. Background technique [0002] Zirconia fiber is a structurally reinforced and functional composite material with great application potential. It has outstanding advantages such as high melting point, low thermal conductivity, small heat capacity, acid and alkali corrosion resistance, excellent mechanical properties, and low high-temperature vapor pressure. The extensive attention and competing research of various countries is playing an increasingly important role in aerospace, military and other high-tech and cutting-edge ...

Claims

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Application Information

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IPC IPC(8): C04B41/00
CPCC04B41/0072C04B41/009C04B35/6225
Inventor 朱陆益谢永帅许东王新强张光辉刘雪松
Owner SHANDONG UNIV
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