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Manufacturing technique of yttrium zirconium composite nanometre ceramic powder for optical fibre lock pin and ferrule

A technology of nano-ceramic powder and optical fiber sleeve, applied in the field of ceramic materials, can solve problems such as environmental pollution and agglomeration, and achieve the effects of good toughness, low cost and simple preparation method

Inactive Publication Date: 2012-05-02
上海景文材料科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Shan Shuiwei, An Shengli, etc. published "The effect of doping amount change on ZrO 2 (Y 2 o 3 ) Influence of Thermal Conductivity of Ceramics", it is mentioned in the article that the co-precipitation method is used to prepare yttria-stabilized zirconia powder, and its particle size is between 2.5-3 microns, which does not reach the nanometer level. It is limited; Chinese patent CN1389405 (publication date: 2003.01.08) describes the preparation of zirconia ceramic powder by calcination method, which is easy to cause agglomeration, particle size is too large, and a large amount of hydrogen chloride gas is excluded, which is harmful to the environment There is a lot of pollution

Method used

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Examples

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Embodiment

[0029] The polypropylene high-level metering tank produced by Taicang Fengyi Chemical Anticorrosion Equipment Co., Ltd. is selected, with a specification of 150L. ZrOCl with a total weight of 10kg 2 ·8H 2 O and Y 2 o 3 The molar ratio is 95:5, dissolved in 100L pure water;

[0030] In another 250L polypropylene high level metering tank produced by Taicang Fengyi Chemical Anticorrosion Equipment Co., Ltd., add 200L of 5% by mass, i.e. 10kg of solid ammonium bicarbonate, and stir until the ammonium bicarbonate is completely dissolved.

[0031] The above two solutions were added to Weihai Automatic Control Equipment Co., Ltd. at the same time in a high-pressure reactor with a WHF specification and a capacity of 5000L (the design pressure was 6.5Mpa, and the design temperature was 300°C), and then 0.02Kg of acrylate was added; at 230 ℃, under the condition of 4Mpa to react for 6 hours.

[0032] After the reaction, the slurry was sent to the PY30 centrifuge of Shanghai Pude Ce...

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Abstract

The invention relates to the technical field of ceramic material, in particular to an yttrium zirconium composite nanometre ceramic powder for optical fibre lock pin and ferrule by hydro-thermal method and a manufacturing technique. The invention is characterized in that ammonium hydrogen carbonate releases OH- ions under hydro-thermal circumstances; hydroxide radicals released from pure water form Zr(OH)4 together with zirconium ions in zirconium oxychloride and form Y(OH)3 together with yttrium ions, wherein, the processes are non-reversible; the Zr(OH)4 and Y(OH)3 then spontaneously decompose into Zr4+ and Y3+ which combine with O2- of relatively high concentration in water, thereby forming electrovalent-bond nanometre yttria zirconia composite powder at last. The processes areall non-reversible and spontaneous, thus requiring no manual monitoring and no preparation of precursor followed by hydro-thermal synthesis. The ceramic powder can form a sphere-shaped or sphere-similar structure after spray granulation. Therefore, interior components have compact combination, fine fluidness and excellent conveying property. Thus, the ceramic powder can be directly used for injection moulding optical fibre lock pin and ferrule.

Description

[technical field] [0001] The invention relates to the technical field of ceramic materials, in particular to a hydrothermal method for preparing yttrium-zirconium composite nano-ceramic powder for optical fiber ferrules and optical fiber sleeves and a production process. [Background technique] [0002] Yttrium-zirconium composite ceramic powder, zirconia added with yttrium oxide (3mol-5mol content) has toughness and thermal shock resistance that ordinary ceramic materials do not have. It is widely used in structural ceramics, such as valves, pistons, injection plugs, etc. So far, domestic enterprises have adopted the co-precipitation method for production, such as Guangdong Dongfang Zirconium Industry, Jiangxi Fanmeiya Group, and Henan Jiaozuo Weiner Chemical Industry. The product prepared by this method has the disadvantages of low degree of crystallization, excessive particle size, and unstable product performance. These shortcomings greatly restrict the performance of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/48C04B35/622G02B6/38
Inventor 陶景超
Owner 上海景文材料科技发展有限公司
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