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Forming method of zirconium oxide ceramic insertion needle for fiber-optic connector and its equipment

A technology of zirconia ceramics and optical fiber connectors, which is applied in the coupling of optical waveguides, etc., can solve the problems of inability to adopt automatic operation, and achieve the effect of low mold and equipment requirements and excellent performance

Inactive Publication Date: 2005-05-04
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Colloidal molding cannot be automated using traditional ceramic injection molding ideas due to the lack of plasticity of the slurry

Method used

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  • Forming method of zirconium oxide ceramic insertion needle for fiber-optic connector and its equipment
  • Forming method of zirconium oxide ceramic insertion needle for fiber-optic connector and its equipment
  • Forming method of zirconium oxide ceramic insertion needle for fiber-optic connector and its equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Mix 1000 grams of deionized water, 160 grams of acrylamide, and 4 grams of N,N'-methylenebisacrylamide to prepare a premix. 100 grams of zirconia powder was used as a raw material, mixed with 40 ml of premixed solution, and ball milled for 24 hours to obtain a low viscosity (<1 Pa·s) zirconia ceramic slurry. Add an appropriate amount of catalyst tetramethylethylenediamine and initiator ammonium persulfate into the slurry, mix well and pour into the feed tank; turn the feed handle to feed slowly, keep the pressure for 2 minutes, and wait for the slurry to solidify for another 7 minutes After demoulding, the inner hole diameter of the green body is 0.136mm measured after drying, and sintered at 1500°C for 2 hours, and the measured inner hole diameter is 0.121mm, which meets the accuracy requirements of the pin green body. After the green body is processed by a precision grinding machine, the dimensional accuracy and various basic properties of the obtained pin products me...

Embodiment 2

[0051] 1000 grams of deionized water, 250 grams of methacrylamide, and 6.25 grams of dipropylene tartaric acid diamide were mixed to prepare a premix. 100 grams of zirconia powder was used as a raw material, mixed with 35 ml of premixed solution, and ball milled for 20 hours to obtain a low viscosity (<1 Pa·s) zirconia ceramic slurry. Add an appropriate amount of initiator hydrogen peroxide to the slurry, mix it evenly and pour it into the feed tank; turn the feed handle to feed slowly, keep the pressure for 3 minutes, and then demould after the slurry is solidified for another 5 minutes, and measure the green body after drying The diameter of the inner hole is 0.138mm. After sintering at 1520°C for 2 hours, the measured diameter of the inner hole is 0.119mm, which meets the precision requirements of the pin body.

Embodiment 3

[0053] 1000 grams of deionized water, 110 grams of methacrylic acid, and 8 grams of polydimethylacrylic acid were prepared into a premix. 100 grams of zirconia powder was used as a raw material, mixed with 50 ml of premixed solution, and ball milled for 48 hours to obtain a low-viscosity (<1 Pa·s) zirconia ceramic slurry. Add an appropriate amount of initiator azo hydrochloride to the slurry, mix it evenly, and pour it into the feeding tank; turn the feeding handle to feed slowly, keep the pressure for 2 minutes, and then release the mold after the slurry is solidified for another 8 minutes, and the green body is dried After measuring the inner hole diameter is 0.135mm, after sintering at 1550°C for 2 hours, the measured inner hole diameter is 0.117mm, which meets the accuracy requirements of the pin body.

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Abstract

The invention discloses a molding method and device for a zirconia ceramic ferrule for an optical fiber connector, belonging to the field of preparation of ceramic devices. The method is to make a premixed liquid from an organic monomer, a cross-linking agent and deionized water, then add ceramic powder, add a catalyst and an initiator to the slurry after ball milling, inject it into a mold cavity through a molding device, and form a green body Sintered after drying. The deviation of the punch in the forming device involved in the present invention is less than 5 μm during the running process along the guide rail, so that the ceramic slurry can be filled and solidified at normal temperature and pressure, and the obtained ceramic green body is uniform and dense, and the sintered body has excellent performance . In particular, the viscosity of the slurry is very low (<1Pa·s), and there is no lateral force on the microneedles at the front end of the punch during filling and curing, and it will not damage the microneedles of the punch, nor will it cause deflection of the microneedles. shift. The method has low requirements on molds and equipment, and can form a zirconia ceramic ferrule body for an optical fiber connector that meets the requirements of dimensional accuracy in near-net dimensions.

Description

technical field [0001] The invention relates to a molding method and device for a zirconia ceramic ferrule, in particular to a molding method and device for a zirconia ceramic ferrule for an optical fiber connector that requires extremely high dimensional accuracy, and belongs to the technical field of ceramic device preparation. Background technique [0002] The rapid development of the world economy inevitably requires high-speed communication of information, so the development of high-performance, high-speed information superhighway has become a strategic goal of competing research and development in the world in the future. Optical fiber communication is the main body and skeleton of information transmission network and information highway. The progress of this technology is always closely related to the progress of basic optical devices, and will further promote the development of optical device technology and industry. Optical fiber connectors are widely used in optica...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/36
Inventor 黄勇马天杨金龙赵雷王铁超
Owner TSINGHUA UNIV
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