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Porous ceramic lamp holder and preparation method thereof

A technology of porous ceramics and ceramic lamp sockets, applied in incandescent lamps, discharge lamps, incandescent lamp parts, etc., to achieve the effect of reducing production costs, good thermal barrier performance, and reducing heat conduction

Inactive Publication Date: 2013-10-09
OCEANS KING LIGHTING SCI&TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a porous ceramic lamp holder, aiming to solve the problems existing in the existing high-power ceramic lamp holder, and to design a porous ceramic lamp holder with good strength, thermomechanical properties and thermal barrier properties

Method used

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  • Porous ceramic lamp holder and preparation method thereof
  • Porous ceramic lamp holder and preparation method thereof
  • Porous ceramic lamp holder and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The pore diameter of the soft polyurethane sponge used to make the ceramic core is controlled between 0.5 and 3.5 mm, and a core corresponding to the size of the lamp base is made according to the ceramic sintering shrinkage rate of the lamp base. Preparation of 400nm grade Al 2 o 3 Powder 70%, Kaolin 10%, Clay 10%, Talc 2%, CaCO 3 2%, bentonite 2% (rheological agent), 100 parts of ceramic mixed raw materials of natural magnesite 4%, then add 0.2 parts of polyethylene glycol (PEG) dispersant in ceramic mixed raw materials, 30 parts of water In the ball mill tank, the planetary mechanical ball mill was used to fully mix the materials to prepare a slurry, and the ball milled at a speed of 240 rpm for 60 minutes, and the viscosity of the prepared slurry was controlled at 3Pa.S.

[0040] The core made of soft polyurethane sponge is subjected to the aforementioned primary slurrying and secondary slurrying, and then centrifuged at a speed of 2000r / min for 90s, and then dri...

Embodiment 2

[0042] The pore diameter of the soft polyurethane sponge used to make the ceramic core is controlled between 0.5 and 3.5 mm, and a core corresponding to the size of the lamp base is made according to the ceramic sintering shrinkage rate of the lamp base. Preparation of 3000nm grade Al 2 o 3 Powder 35%, Kaolin 20%, Clay 20%, Talc 5%, CaCO 3 3%, bentonite 7% (rheological agent), 100 parts of ceramic mixed raw materials of natural magnesite 10%, then add 1 part of polyethylene glycol (PEG) dispersant, 0.5 part of polyethylene Alcohol binder, 0.5 parts of oleic acid and 40 parts of water are placed in a ball mill tank, and a planetary mechanical ball mill is used to fully mix the materials to prepare a slurry, and ball mill at a speed of 240 rpm for 80 minutes. The viscosity of the prepared slurry is controlled at 5Pa.S.

[0043] The core made of soft polyurethane sponge is subjected to the aforementioned primary slurrying and secondary slurrying, and then centrifuged at a spe...

Embodiment 3

[0045] The pore diameter of the soft polyurethane sponge used to make the ceramic core is controlled between 0.5 and 3.5 mm, and a core corresponding to the size of the lamp base is made according to the ceramic sintering shrinkage rate of the lamp base. Preparation of 5000nm grade Al 2 o 3 Powder 53%, Kaolin 15%, Clay 15%, Talc 3%, CaCO 3 3%, bentonite 4% (rheological agent), 100 parts of ceramic mixed raw materials of natural magnesite 7%, then add 0.5 parts of polyethylene glycol (PEG) dispersant, 0.2 parts of polyethylene Alcohol binder, 0.3 parts of stearic acid surfactant and 35 parts of water are placed in a ball mill tank, and the planetary mechanical ball mill is used to fully mix the materials to prepare a slurry, and ball mill at a speed of 240 rpm for 90 minutes. The prepared slurry Material viscosity is controlled at 4Pa.S.

[0046] The core made of soft polyurethane sponge is subjected to the aforementioned primary slurrying and secondary slurrying, and then ...

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Abstract

The invention discloses a porous ceramic lamp holder and a preparation method thereof. The outer wall of the porous ceramic lamp holder has a compact ceramic structure, and the inner wall has a porous ceramic structure; and the porosity becomes larger from the outer wall of the lamp holder to the inner wall of the lamp holder and from the bottom of the lamp holder to the opening of the lamp holder, and is in gradient transition. The lamp holder is prepared by a method of primary pulp hanging, secondary pulp hanging, intermediate-temperature degreasing and high-temperature sintering. The porous ceramic lamp holder has good thermal barrier performance so as to effectively reduce outwards thermal conduction of the lamp holder and reduce the surface temperature of the lamp holder; simultaneously, the porous ceramic lamp holder is prepared by a secondary centrifugal pulping method, so the porous ceramic lamp holder has good strength and thermomechanical property, and the riveting and threaded connection strength of electrode sheet metal of the ceramic lamp holder is guaranteed; meanwhile, the preparation method has the advantages of simple and reliable process and low production cost.

Description

technical field [0001] The invention belongs to the field of lamps, in particular to a porous ceramic lamp holder for high-power lighting and a preparation method thereof. Background technique [0002] Electrically insulating ceramics, also known as device ceramics, are ceramic materials used in electronic equipment to install, fix, support, protect, insulate, and isolate various electronic components and devices. Due to the excellent characteristics of high temperature resistance, corrosion resistance, high pressure resistance, and moisture resistance, electrical insulating ceramics are widely used in lamp holders and terminal blocks for high-power lighting (for example, 100W, 150W, 400W, 1000W, and above power) Parts with heat and insulation requirements. However, the lamp holder material is still one of the components with the highest failure rate in high-power industrial lighting fixtures. At present, the ceramic lamp holders used in high-power lighting fixtures in the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01K1/42H01J5/50
Inventor 周明杰孙道明孔祥钦
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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