Non-fluorin environment protection opacifiedglass material and method for manufacturing same

A manufacturing method and technology of glass materials, applied in glass manufacturing equipment, manufacturing tools, glass furnace equipment, etc., can solve the problems of continuous production of unfavorable opacity glass, increase of glass production cost, etc., and avoid short furnace life and safety problems , enhance the opacification effect, reduce the effect of melting temperature

Inactive Publication Date: 2008-08-20
QILU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of heat treatment to produce opacity is not conducive to the continuous production of glass, and it will also increase the production cost of glass
So far, there has been no report on the development of low-phosphorus, fluorine-free and heat-treated opaque glass using the principle of glass phase separation in the world.

Method used

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  • Non-fluorin environment protection opacifiedglass material and method for manufacturing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Glass composition (wt%) is:

[0014] SiO 2 Al 2 o 3 B 2 o 3 P 2 o 5 MgO CaO BaO Na 2 o

[0015] SiO 2 Al 2 o 3 B 2 o 3 P 2 o 5 MgO CaO BaO Na 2 o

[0016] 61 4 4.2 7 2.1 1.2 8 12.5

[0017] Use silicon dioxide, aluminum oxide, boric acid, diammonium hydrogen phosphate, magnesium oxide, calcium carbonate, barium carbonate, and sodium carbonate as raw materials, weigh and mix them evenly according to the above components, and then keep warm in an electric furnace at 1520°C for 3 After 1 hour, the molten glass is rapidly cooled in a mold to form a block glass, which is sent to an annealing furnace at 560°C for annealing, kept for 1 hour, and then cooled to room temperature to form a fluorine-free silicate opaque glass material. Its coefficient of thermal expansion is 56.5×10 -7 ℃ -1 , the flexural strength is 96.2MPa, the whiteness is 84%, and other properties are shown in Table 1.

Embodiment 2

[0019] Glass composition (wt%) is:

[0020] SiO 2 Al 2 o 3 B 2 o 3 P 2 o 5 SrO BaO Na 2 OK 2 o

[0021] 60.5 4.2 3.3 7.2 6 5.6 11.2 2

[0022] Use silicon dioxide, aluminum oxide, boric acid, diammonium hydrogen phosphate, strontium carbonate, barium carbonate, sodium carbonate, and potassium carbonate as raw materials, weigh and mix them evenly according to the above components, and then keep warm in an electric furnace at 1520°C for 3 After 1 hour, the molten glass is rapidly cooled in a mold to form a block glass, which is sent to an annealing furnace at 560°C for annealing, kept for 1 hour, and then cooled to room temperature to form a fluorine-free silicate opaque glass material. Its coefficient of thermal expansion is 58.7×10 -7 ℃ -1 , the flexural strength is 90.3MPa, the whiteness is 86%, and other properties are shown in Table 1.

Embodiment 3

[0024] Glass composition (wt%) is:

[0025] SiO 2 Al2 o 3 B 2 o 3 P 2 o 5 MgO CaO BaO Li 2 O Na 2 o

[0026] 60 4.2 4 7.2 2.1 2.2 7.8 1.5 11

[0027] Use silicon dioxide, aluminum oxide, boric acid, diammonium hydrogen phosphate, magnesium oxide, calcium carbonate, barium carbonate, lithium carbonate, and sodium carbonate as raw materials, weigh and mix them uniformly according to the above components, and then heat them in an electric furnace at 1510°C Keep warm in medium for 3 hours, quickly cool the molten glass in the mold to form block glass, send it to an annealing furnace at 560°C for annealing, keep it warm for 1 hour, and then cool to room temperature to form fluorine-free silicate emulsion glass material. Its coefficient of thermal expansion is 61.3×10 -7 ℃ -1 , the flexural strength is 87.3MPa, the whiteness is 84%, and other properties are shown in Table 1.

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Abstract

The invention relates to a fluorine-free environmental opaque glass material and a preparation method thereof and belongs to the new material field of glass. Composition of the glass material is SiO2-Al2O3-B2O3P2O5-MgO-CaO-SrO-BaO-Li2O-Na2O-K2O. The preparation method comprises that raw materials are mixed to make an even batch, then the batch is put into a corundum crucible, and then the batch is casted and molded after being melted and insulated under 1500 DEG C to 1520 DEG C for 3 hours, and then the batch is insulated and annealed under 550 DEG C to 560 DEG C for 1 hour. The preparation of the invention replaces the fluoride with a small amount of phosphate to generate opaque effect, and no environmental pollution can be caused in the industrial production of the opaque glass, and the short service life of glass furnaces and safety problems caused by fluorine can be avoided, and a compact net structure reconstruction technology is adopted to adjust the relative contents of SiO2 and P2O5, meanwhile, alkali metals or alkaline earth metal oxides are introduced, and the glass produces significant opaque effect under the spontaneous phase separation in the process of cooling, and a small amount of B2O3 is introduced to enhance the opaque effect of the glass, meanwhile, a certain amount of Al2O3 is introduced to endow the glass with excellent chemical stability.

Description

technical field [0001] The invention relates to a fluorine-free environment-friendly opaque glass material and a manufacturing method thereof, belonging to the field of new glass materials. Background technique [0002] Compared with ordinary transparent glass, opal glass has the characteristics of soft color, high purity and elegance. In recent years, the application of opacity glass has become more and more extensive. In addition to being used in daily utensils, architectural lighting and cosmetic packaging, it is also used in various wine bottles, architectural decoration materials and dental materials. The production scale is also gradually expanding. , showing a good market development prospect. [0003] The mechanism of glass opacification mainly includes crystal grain opacification, phase separation opacification, unmelted particle opacification and micro-bubble opacification. At present, almost all manufacturers at home and abroad adopt the first opacification metho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C3/097C03B5/235
Inventor 刘树江高彬姚金水陈玉清刘建安张梅梅
Owner QILU UNIV OF TECH
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