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Flexible rare-earth oxide nanofiber membrane and preparation method thereof

A technology of rare earth oxides and nanofiber membranes, which can be used in fabric surface trimming, heating/cooling fabrics, textiles and papermaking, etc., and can solve the problem of low content of inorganic components in precursor fibers, high brittleness of nanofiber membranes, and inability to support fiber skeletons structural issues

Active Publication Date: 2014-11-19
嘉兴富瑞邦新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the currently prepared inorganic oxide nanofibrous membranes generally suffer from high brittleness, which limits their practical applications.
[0003] Chinese patent CN201010187764.8 discloses a La 2 o 3 The preparation method of nanofiber catalyst is prepared by uniformly mixing spinnable polymer resin, lanthanum salt and polar solvent to prepare electrospinning liquid, and then preparing lanthanum oxide nanofibers through calcination. Low, the yield of lanthanum oxide nanofibers prepared by this method is low
Bull.Korean Chem.Soc.(2011)9 reported a method for preparing cerium oxide nanofibers. A spinnable precursor solution was prepared by uniformly mixing cerium salt, solvent and polymer, and then through electrospinning technology and calcination However, the cerium oxide nanofibers prepared by this method are uneven in diameter and poor in continuity, and the content of inorganic components in the precursor fibers is low, and a large amount of organic components are unstable and decomposed during the calcination process. Inorganic components cannot support the fiber skeleton structure

Method used

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  • Flexible rare-earth oxide nanofiber membrane and preparation method thereof
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  • Flexible rare-earth oxide nanofiber membrane and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0094] A method for preparing a flexible lanthanum oxide nanofiber membrane, the specific steps are:

[0095] Step 1: Dissolve lanthanum nitrate and zirconium acetate in water, stir for 10 minutes, add coupling agent γ-aminopropyltriethoxysilane, continue stirring for 5 minutes, then add surfactant dodecyldimethylbenzyl Ammonium chloride, wherein the ratio of lanthanum nitrate to water is 10g:10mL, the molar ratio of lanthanum nitrate to zirconium acetate is 100:10, and the molar ratio of lanthanum nitrate to coupling agent γ-aminopropyltriethoxysilane is 1 :0.02, the molar ratio of lanthanum nitrate and surfactant dodecyl dimethyl benzyl ammonium chloride is 1:0.01; mix uniformly to make a uniform and stable dynamic viscosity of 1Pa s and conductivity of 50mS / m Precursor solution, the precursor solution has interpenetrating three-dimensional network molecular chains, and its structural formula is as follows:

[0096]

[0097] Step 2: Under the conditions of room temperatu...

Embodiment 2

[0100] A method for preparing a flexible cerium oxide nanofiber membrane, the specific steps are:

[0101]Step 1: Dissolve cerium nitrate hexahydrate and aluminum isopropoxide in N,N-dimethylformamide / water, stir for 30 minutes and add coupling agent N-β-aminoethyl-γ-aminopropylmethyl Dimethoxysilane, after continuing to stir for 30min, add surfactant sodium dodecylbenzenesulfonate, wherein the ratio of cerium nitrate hexahydrate to N,N-dimethylformamide / water is 10g:50mL, N, The volume ratio of N-dimethylformamide to water is 1:1, the molar ratio of cerium nitrate hexahydrate to aluminum isopropoxide is 100:1, cerium nitrate hexahydrate and coupling agent N-β-aminoethyl- The molar ratio of γ-aminopropylmethyldimethoxysilane is 1:0.1, the molar ratio of cerium nitrate hexahydrate and surfactant sodium dodecylbenzenesulfonate is 1:0.1; mix well to make uniform and stable A precursor solution having a dynamic viscosity of 0.1Pa·s and an electrical conductivity of 10mS / m, said p...

Embodiment 3

[0105] A method for preparing a flexible praseodymium oxide nanofiber membrane, the specific steps are:

[0106] Step 1: Dissolve praseodymium nitrate hexahydrate and copper acetate monohydrate in water / N,N-dimethylformamide, stir for 60 minutes, add coupling agent methyltrimethoxysilane, continue stirring for 15 minutes, then add surface Active agent dodecyldimethylamine oxide, wherein the ratio of praseodymium nitrate hexahydrate to water / N,N-dimethylformamide is 10g:50mL, the volume ratio of water to N,N-dimethylformamide is 1:1, the molar ratio of praseodymium nitrate hexahydrate and copper acetate monohydrate is 100:3, the molar ratio of praseodymium nitrate hexahydrate and coupling agent methyltrimethoxysilane is 1:0.05, and the molar ratio of praseodymium nitrate hexahydrate and the surface The molar ratio of the activator dodecyl dimethyl amine oxide is 1:0.05; uniform and stable kinematic viscosity is 0.5Pa·s and the electrical conductivity is 20mS / m precursor solutio...

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Abstract

The invention relates to a flexible rare-earth oxide nanofiber membrane and a preparation method thereof. The preparation method includes firstly dissolving rare-earth metal source and non-rare-earth metal salt into solvent, and sequentially adding coupling agent and surfactant to be uniformly mixed and obtain stable precursor solution with interpenetrating three-dimensional network structural molecular chains; later making the precursor solution into precursor fibers through a spinning and forming process; burning the precursor fibers in the air to obtain the flexible rare-earth oxide nanofiber membrane. The preparation method is simple and high in yield, and the obtained flexible rare-earth oxide nanofiber membrane is good in flexibility, and has promising application prospect in various application fields such as lighting, display and bioluminescene marking.

Description

technical field [0001] The invention belongs to the technical field of new materials, and relates to a flexible rare earth oxide nanofiber membrane and a preparation method thereof, in particular to a flexible inorganic fiber material with a precursor solution having an interpenetrating three-dimensional network structure molecular chain as a spinning solution and a preparation method thereof, specifically a flexible rare earth oxide nanofiber membrane and a preparation method thereof. Background technique [0002] Rare earth elements refer to the lanthanide elements in group IIIB of the periodic table and scandium (Sc) and yttrium (Y) with similar properties, a total of 17 elements. Because rare earth elements have the characteristics of high electricity price, large radius, strong polarizability, active chemical properties, strong reducibility, and good thermal stability of oxides, they have become an indispensable modification additive in the research of ceramic materials...

Claims

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Application Information

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IPC IPC(8): D04H1/4382D04H1/4209D06C7/00
Inventor 丁彬韩伟东司银松单浩如俞建勇
Owner 嘉兴富瑞邦新材料科技有限公司
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