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Method for preparing zirconia ceramic casing for optical fiber connector

A technology of zirconia ceramics and optical fiber connectors, which is applied in the coupling of optical waveguides, etc., can solve the problems of low pass rate, low product pass rate, increased production costs, etc., and achieve the effect of ensuring sintering quality

Inactive Publication Date: 2005-11-23
TIANJIN URBAN CONSTR COLLEGE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for the production of zirconia ceramic sleeves by isostatic pressing, for products with a wall thickness of only 0.6mm and high dimensional accuracy requirements such as roundness and concentricity, the disadvantage is that the qualified rate of the product is low, only 80-85%.
In order to overcome the shortcoming of low qualified rate of products, most domestic manufacturers have to use nano-scale ultra-pure and ultra-fine zirconia powder imported from Japan to ensure the quality of zirconia ceramic sleeves produced by isostatic pressing molding technology. This also greatly increases the production cost of the product

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The raw material is domestic zirconia powder containing 3mol% diyttrium trioxide.

[0018] The average particle size of secondary particles of zirconia powder granulated by spray granulation technology is 1.0μm, and the specific surface area is 35m 2 / g.

[0019] The vibration charging and isostatic pressing method adopts elastic molds, that is, plastic materials made of a mixture of polyvinyl chloride and nitrile rubber, and a plastic mold with a Brinell hardness of 70 prepared by injection molding. The charging port is a funnel structure. The core is fixed and centered by plastic covers at both ends. The specific operation is as follows:

[0020] (a) Mold assembly: The plastic mold consists of a metal core, a plastic tube, a lower mold cover and an upper mold cover; first insert the metal core into the lower cover of the plastic mold, and then put the lower cover with the metal core into the plastic tube stand-by;

[0021] (b) Packing zirconia powder: put the asse...

Embodiment 2～4

[0027]

[0028] The above examples show that zirconia powder can be completely used, and qualified zirconia ceramic sleeves meeting the technical requirements of optical fiber connectors can be produced through the above preparation method.

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Abstract

The invention discloses a method for preparing zirconia ceramic casing for optical fiber connector by using domestically made zirconium dioxide powder containing 3 mol% of yttrium oxide as the raw material, the process comprises the following steps, (1) granulation: employing atomizing granulation technique to treat the zirconium oxide powder with secondary particles whose average grain diameter is between 1.0-3.0 um containing yttrium oxide, reaching a specific surface area of 12-35m2 / g, (2) moulding: employing a resilient die vibration charging method and isostatic compaction with a forming pressure of 60-200 MPa, (3) firing: employing a silicon-molybdenum rod electric furnace at a firing temperature of 1380-1480 deg. C, the firing cycle is 48-50 hours.

Description

technical field [0001] The invention relates to an optical fiber connector, in particular to a preparation method for a ceramic sleeve of the optical fiber connector. Background technique [0002] Since Corning Corporation of the United States successfully developed optical fiber in 1970, optical fiber communication has experienced more than 30 years of development. Now, due to the upsurge of global information and communication infrastructure and the popularity of the Internet, the importance, urgency and inevitability. Optical fiber connectors are one of the most widely used and most demanded optical passive components in optical fiber networks. The manufacturing process of optical fiber connectors includes three steps: the manufacture and processing of optical fiber ferrules, sleeve blanks, and device assembly. Now, my country has been able to produce various series of optical fiber active connectors such as FC, SC, and ST, and the performance...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/48
Inventor 周彩楼雅菁
Owner TIANJIN URBAN CONSTR COLLEGE
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