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Method for preparing zirconium oxide hollow ceramic mahjong

A technology of zirconia ceramics and hollow ceramics, applied in zirconia, ceramic molding machines, manufacturing tools, etc., can solve the problems of zirconia ceramics with large specific gravity, unsuitability for entertainment, and heavy weight, etc., to achieve crisp sound, round color, and weight light effect

Inactive Publication Date: 2004-09-15
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, zirconia ceramics have a large specificity. If mahjong is made, it will be too heavy and not suitable for entertainment.

Method used

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  • Method for preparing zirconium oxide hollow ceramic mahjong
  • Method for preparing zirconium oxide hollow ceramic mahjong

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Take TZP-Tetragonal ZrO 2 Polycrystalline ceramic powder, the powder particle size is about 70nm; CeO 2 As a stabilizer, the content is 12mol% (or Y 2 o 3 As a stabilizer, Y 2 o 3 The content is 2mol%, or CeO 2 / Y 2 o 3 As a composite stabilizer, the content is generally 10mol%, CeO 2 / Y 2 o 3 ratio is 8), in deionized water to prepare a premix solution containing 20wt% hydroxyethyl acrylate monomer and methylenebisacrylamide, the ratio of methylenebisacrylamide and hydroxyethyl acrylate is 1:30, Ball milled for 24 hours to obtain a 35vol% ceramic slurry. 0.12 ml of ammonium persulfate was added to 100 ml of the slurry, and the slurry was poured into a metal mold. A prefabricated rectangular paraffin block mold core is placed in the mold, and the paraffin block is surrounded and solidified when the ceramic slurry fills the mold. Then put it into a degreasing furnace at 120° C. to remove the glue, and at the same time, the paraffin block melts and is discharg...

Embodiment 2

[0044] Take the cubic phase ZrO 2 Ceramic powder, the particle size of the powder is about 50nm, the content of CaO is generally 6mol%, and it is used as a stabilizer, (or Y 2 o 3 content of 8 mol% or MgO content of 14 mol%). Prepare a premix solution containing 32wt% of hydroxyethyl acrylate monomer and methylenebisacrylamide in deionized water, the ratio of methylenebisacrylamide and hydroxyethyl acrylate is 1:25, and ball mill for 24 hours to obtain 33vol % ceramic slurry. Add 0.2ml of ammonium persulfate to 100ml of slurry, inject the slurry into a metal mold through colloidal injection molding, and the injection pressure is 2MPa. A prefabricated rectangular paraffin block mold core is placed in the mold, and the paraffin block is surrounded and solidified when the ceramic slurry fills the mold. Then put it into a degreasing furnace at 120° C. to remove the glue, and at the same time, the paraffin block melts and is discharged from the wax outlet to obtain a hollow cer...

Embodiment 3

[0046] Partially stabilized ZrO in the PSZ 2 MgO is added into the ceramic powder as a stabilizer, and the content of MgO is 9 mol% (or CaO is used as a stabilizer, and the content of CaO is 12 mol%). Prepare a premix solution containing 20wt% of hydroxyethyl acrylate monomer and methylene bisacrylamide in deionized water, the ratio of methylene bisacrylamide and hydroxyethyl acrylate is 1:30, and ball mill for 24 hours to obtain 45vol % ceramic slurry. 0.12 ml of ammonium persulfate was added to 100 ml of the slurry, and the slurry was poured into a metal mold. A prefabricated rectangular paraffin block mold core is placed in the mold, and the paraffin block is surrounded and solidified when the ceramic slurry fills the mold. Then put it into a degreasing furnace at 120° C. to remove the glue, and at the same time, the paraffin block melts and is discharged from the wax outlet to obtain a hollow ceramic mahjong body. The hollow body was sintered at 1600°C for 1.5h to obtai...

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Abstract

The invention discloses a method to prepare zirconia hollow ceramic mahjong, making its formed blank enwrap paraffine inside, melting the paraffine and discharge the melted paraffine from the preset outlet to obtain the zirconia ceramic mahjong blank, and then making high temperature sintering to obtain the lightweight zirconia hollow ceramic mahjong, which has very good tenacity and wearability, whose surface shows white, black, brown, yellow and blue and whose wall is 0.5-2 mm thick.

Description

technical field [0001] The invention belongs to the field of preparation of ceramic products. It specifically relates to a method for preparing zirconia hollow ceramic mahjong with zirconia powder. Background technique [0002] Mahjong has a history of thousands of years in our country. It is a traditional entertainment tool for the Chinese people, and it is also a popular form of entertainment. It has now spread to many countries. The wide spread of mahjong and the degree to which it is loved by the broad masses of the people can be called the quintessence of the country. The mahjong sold on the market is usually refined from materials such as plastics, agate, jadeite, jade, ivory and alloys. Due to the requirements of its use, the weight of mahjong should not be too heavy, and its wear resistance is better. At the same time, it is required to have a certain impact resistance, and it will not change color after long-term use; high-grade mahjong has better hand feeling, r...

Claims

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Application Information

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IPC IPC(8): A63F9/20B28B1/00C01G25/02
Inventor 杨金龙张宇峰马天黄勇
Owner TSINGHUA UNIV
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