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Colored glass ceramic with high lanthanum oxide content

A technology of glass-ceramics and lanthanum oxide, which is applied in the field of colored glass-ceramics with high lanthanum oxide content and its preparation, and can solve problems such as increasing the difficulty of crystallization

Inactive Publication Date: 2014-05-28
梅州金益玻璃实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the addition of lanthanum, it will increase the difficulty of crystallization. When introducing more than 0.8% lanthanum oxide, a combination that is easy to crystallize must be used

Method used

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  • Colored glass ceramic with high lanthanum oxide content

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preparation example Construction

[0026] A preparation method of colored glass-ceramics, the raw materials are configured according to the requirements, the raw materials are passed into the melting part, mixed and then melted to form a molten glass liquid, and then the glass liquid is passed into the cooling part, homogenized, clarified, and air bubbles are discharged in the cooling part , and then discharge the molten glass to the forming part, anneal after forming, and finally make colored glass-ceramic, wherein the temperature in the forming part is kept at 1320 ° C to 1400 ° C, and the time for the glass liquid to be stored in the forming part is 1 to 10 hours. After cooling down, it is annealed after forming, and finally made into colored glass-ceramics. The heat preservation process of the forming part is conducive to the growth of crystal nuclei. Since the raw material may stick in the mold cavity during the crystallization process, the mold cavity needs to be destroyed, so the mold cavity can be made...

Embodiment 1

[0029] A colored glass-ceramic consisting of the following components: 33.3Kg of silicon oxide, 9Kg of calcium oxide, 10.8Kg of magnesium oxide, 13Kg of aluminum oxide, 5.5Kg of lithium oxide, 3Kg of aluminum phosphate, 5.5Kg of calcium fluoride, 2.7Kg of barium oxide, Boron oxide 4.4Kg, potassium oxide 0.2Kg, sodium oxide 0.8Kg, neodymium trioxide 1.5Kg, gold trichloride 0.015Kg, tin dioxide 0.15Kg, manganese dioxide 0.8Kg, zirconia 0.5Kg, bismuth oxide 0.25Kg , titanium oxide 0.25Kg, antimony oxide 1.2Kg, lanthanum oxide 2Kg, cerium carbonate 1.1Kg, zinc oxide 0.02Kg, iron oxide 0.005Kg.

[0030] Raw materials are configured according to requirements, and the raw materials are passed into the melting part, mixed and then melted to form molten glass, and the melting temperature is 1700°C. Then the molten glass is passed into the cooling section, homogenized in the cooling section, clarified, and air bubbles are discharged, and then the molten glass is discharged to the formin...

Embodiment 2

[0032] A colored glass-ceramic consisting of the following components: silicon oxide 33Kg, calcium oxide 9Kg, magnesium oxide 10Kg, aluminum oxide 12Kg, lithium oxide 5Kg, aluminum phosphate 4Kg, calcium fluoride 6Kg, barium oxide 3Kg, boron oxide 5Kg, oxide Potassium 2Kg, sodium oxide 0.1Kg, neodymium trioxide 1.3Kg, gold trichloride 0.01Kg, tin dioxide 0.1Kg, manganese dioxide 0.1Kg, zirconia 0.3Kg, bismuth oxide 0.1Kg, titanium oxide 0.1Kg, oxide Antimony 1.5Kg, lanthanum oxide 2.2Kg, cerium carbonate 1.5Kg, zinc oxide 0.04Kg, iron oxide 0.01Kg.

[0033] Raw materials are configured according to requirements, and the raw materials are passed into the melting part, mixed and then melted to form molten glass, and the melting temperature is 1600°C. Then the molten glass is passed into the cooling section, where it is homogenized, clarified, and air bubbles are discharged, and then the molten glass is discharged to the molding section, and then annealed after molding, and final...

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Abstract

The invention provides a colored glass ceramic with high lanthanum oxide content. The proportion of crystals in the colored glass ceramic is about 40-80%. The crystal nucleus is thick and big, opaque, excellent in hardness and excellent in mechanical performance. As the content of neodymium oxide is higher, the colored glass ceramic is aubergine in appearance and excellent in glossiness, and can be manufactured into furniture and building wall bricks. Colorants are all affected by manganese, so that the overall stone imitating effect is better.

Description

technical field [0001] The invention relates to glass-ceramics, in particular to colored glass-ceramics with high lanthanum oxide content and a preparation method thereof. Lanthanum oxide is introduced into the glass-ceramics to improve the gloss and reduce the influence of lanthanum oxide on crystallization. Background technique [0002] Lanthanum oxide has high refraction and low dispersion characteristics in the glass phase, and is often used in the manufacture of optical glass, such as the optical glass of 201310029482.9, which includes La 2 o 3 18-23%. In glass-ceramics, a small amount of lanthanum oxide can improve the mechanical properties. "La 2 o 3 Effect of Doping on Crystallization Behavior and Mechanical Properties of Lithium Disilicate Glass-Ceramics" discloses that 0.4 to 1.2% lanthanum oxide in lithium disilicate can significantly improve the bending resistance. 201010530671.0 relates to cobalt-doped magnesium-aluminum-silicon-based nanocrystalline glass-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C4/02C03C10/14
Inventor 曹小松
Owner 梅州金益玻璃实业有限公司
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