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yag/al with core-shell structure 2 o 3 /zro 2 Preparation method of single crystal nanofiber

A core-shell structure, single-crystal nanotechnology, applied in the direction of nanotechnology, inorganic raw material rayon, etc., can solve the problem of not seeing ternary single-crystal composite nanofibers, etc., and achieve high elastic modulus and good wettability. Effect

Active Publication Date: 2020-06-05
LANZHOU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

No YAG / Al with a core-shell structure has been seen so far 2 o 3 / ZrO 2 Research report or invention patent of ternary single crystal composite nanofiber

Method used

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  • yag/al with core-shell structure <sub>2</sub> o <sub>3</sub> /zro <sub>2</sub> Preparation method of single crystal nanofiber
  • yag/al with core-shell structure <sub>2</sub> o <sub>3</sub> /zro <sub>2</sub> Preparation method of single crystal nanofiber
  • yag/al with core-shell structure <sub>2</sub> o <sub>3</sub> /zro <sub>2</sub> Preparation method of single crystal nanofiber

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preparation example Construction

[0014] The present invention is YAG / Al with core-shell structure 2 o 3 / ZrO 2 Preparation method of single crystal nanofibers with Al 2 o 3 , ZrO 2 , Y 2 o 3 And PVA is raw material, adopts electrospinning method, uses citric acid as the complexing agent of spinning solution, and its steps are:

[0015] (1) Preparation of precursor sol:

[0016] ① Weigh polyvinyl alcohol and distilled water into a container, and stir in a magnetic stirrer in a constant temperature water bath at 85°C until the polyvinyl alcohol is fully dissolved and becomes a transparent sol, wherein: the mass content of polyvinyl alcohol is 11%; the volume fraction of distilled water is 60%~70%;

[0017] ② Al 2 o 3 , ZrO 2 , Y 2 o 3 According to the molar ratio in non-integer multiples, the sum of the molar weights of each component is 100, combined with the heat treatment process, a single crystal composite fiber with a core-shell structure is obtained, in which Al 2 o3 , ZrO 2 , Y 2 o 3 The...

Embodiment 1

[0027] Example 1: Weigh polyvinyl alcohol (PVA) and distilled water and pour them into a conical flask, so that the concentration of polyvinyl alcohol is 11%. Stir in a magnetic stirrer in a constant temperature water bath at 85°C to form a transparent polyvinyl alcohol sol. Will Al 2 o 3 , ZrO 2 , Y 2 o 3 According to the molar ratio in non-integer multiples, the sum of the molar weights of each component is 100, combined with heat treatment experiments, the results show that the product is a single crystal nanofiber with a core-shell structure, and its Al 2 o 3 , ZrO 2 , Y 2 o 3 The molar ratio is 65:19:16. Weigh Y in molar ratio 2 o 3 Pour into a beaker, then add concentrated nitric acid until Y 2 o 3 Fully dissolve into a colorless solution, then heat to remove excess nitric acid, weigh Al(NO 3 ) 3 9H 2 O, ZrOCl 2 ·8H 2 O was added therein; then citric acid and absolute ethanol were weighed and added into the above-mentioned beaker to form a mixed solutio...

Embodiment 2

[0028] Embodiment 2: Weigh acetic acid and absolute ethanol and pour them into a beaker, and mix well. Its steps are the same as in Example 1.

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Abstract

The invention discloses a method for preparing a YAG / Al2O3 / ZrO2 single crystal nano fiber with a core-shell structure. The method comprises the following steps: by taking Al2O3, ZrO2, Y2O3 and PVA (Polyvinyl Alcohol) as raw materials, performing thermal treatment, thereby obtaining the fiber of the core-shell structure, wherein the mole ratio of Al2O3 and ZrO2 to Y2O3 is 65:19:16, and the mass content of PVA is 11%, specifically, dissolving polyvinyl alcohol into distilled water; putting Y2O3 into concentrated nitric acid, dissolving, and adding Al(NO3)3*9H2O, ZrOCl1*8H2O, citric acid and absolute ethyl alcohol; uniformly mixing the two solutions, injecting into an electric spinning device, performing spinning, and performing thermal treatment, thereby obtaining a single crystal composite fiber of the core-shell structure.

Description

technical field [0001] The present invention relates to the preparation technology of ternary single crystal composite fiber, in particular to ternary single crystal YAG / Al 2 o 3 / ZrO 2 Preparation technology of composite nanofibers. Background technique [0002] Because composite nanofibers have large specific surface area, large aspect ratio and good mechanical properties, they have broad application prospects in biomedicine, aerospace, optoelectronic materials and other fields. Dai Jianfeng prepared Ni with a core-shell structure by coaxial double-nozzle electrospinning 0.6 Zn 0.4 Fe 2 o 4 / BaFe 12 o 19 Nanocomposite magnetic fibers. The core layer of the composite material is Ni 0.6 Zn 0.4 Fe 2 o 4， The shell is BaFe 12 o 19 , can take advantage of the anisotropy of the hard magnetic phase and the saturation magnetization of the soft magnetic phase. (Dai Jianfeng, Jiang Shisheng, Wang Qing, Li Weixue. Core-shell structure Ni 0.6 Zn 0.4 Fe 2 o 4 / BaFe ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F9/08B82Y40/00
CPCB82Y40/00D01F9/08
Inventor 孙卫民何玲李文生寇生中
Owner LANZHOU UNIVERSITY OF TECHNOLOGY