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An alkali-resistant heatproof glass material and a preparation method thereof

A technology of glass materials and glass raw materials, which is applied in the field of glass materials with good alkali resistance and thermal stability and its preparation, can solve the problems of poor alkali resistance, high thermal expansion coefficient, and thermal instability, and achieve good alkali resistance Performance, Effect of Low Thermal Expansion Coefficient

Active Publication Date: 2014-06-04
JIANGSU AOLAN ARCHITECTURE GLASS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Technical problem to be solved: Ordinary glass materials are not resistant to alkaline environments due to their poor alkali resistance and high thermal expansion coefficient, and they are unstable when heated

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] An alkali-resistant and heat-resistant glass material, the preparation method includes the following steps: (1) The weight ratio of the glass components is: TeO 2 7kg, K 2 O is 4kg, SiO 2 13kg, PbO 4kg, Y 2 o 3 Mix the raw materials corresponding to the above oxides; (2) Grind the mixed glass raw materials with an ultrafine pulverizer, and screen the passing powder with a 400-mesh sieve after pulverization; (3) Open the corundum crucible, Add the powder that passed through the 400-mesh sieve into the corundum crucible, heat the corundum crucible to 1340°C at a heating rate of 30°C / min, keep the temperature at the highest temperature for 3 hours, and stir the glass liquid at the same time ;(4) Clarify by ventilating after stirring; (5) pour the glass liquid into the mold after clarification; (6) anneal the glass after pouring, the first stage is annealing from the highest temperature to 1000°C for 1.5h, Then lower the temperature to 450°C and keep it for 3 hours, and...

Embodiment 2

[0014] An alkali-resistant and heat-resistant glass material. The preparation method includes the following steps: (1) The weight ratio of the glass components is: TeO 2 5kg, K 2 O is 7kg, SiO 2 13kg, PbO 9kg, Y 2 o 3 Mix the raw materials corresponding to the above oxides; (2) Grind the mixed glass raw materials with a superfine pulverizer, and screen the passing powder with a 400-mesh sieve after pulverization; (3) Open the corundum crucible, Add the powder that passed through the 400-mesh sieve into the corundum crucible, heat the corundum crucible to 1400°C at a heating rate of 30°C / min, keep the temperature at the highest temperature for 3 hours, and stir the glass liquid at the same time ;(4) Clarify by ventilation after stirring; (5) pour the glass liquid into the mold after clarification; (6) anneal the glass after pouring, the first stage is annealing from the highest temperature to 950°C for 1.5h, Then lower the temperature to 450°C and keep it for 3 hours, and f...

Embodiment 3

[0016] An alkali-resistant and heat-resistant glass material. The preparation method includes the following steps: (1) The weight ratio of the glass components is: TeO 2 6kg, K 2 O is 9kg, SiO 2 12kg, PbO 7kg, Y 2 o 3 Mix the raw materials corresponding to the above oxides; (2) Grind the mixed glass raw materials with a superfine pulverizer, and screen the passing powder with a 400-mesh sieve after pulverization; (3) Open the corundum crucible, Add the powder that passed through the 400-mesh sieve into the corundum crucible, heat the corundum crucible to 1370°C at a heating rate of 30°C / min, keep the temperature at the highest temperature for 3 hours, and stir the glass liquid at the same time ;(4) Clarify by ventilation after stirring; (5) pour the glass liquid into the mold after clarification; (6) anneal the glass after pouring, the first stage is annealing from the highest temperature to 970°C for 1.5h, Then lower the temperature to 450°C and keep it for 3 hours, and f...

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PUM

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Abstract

The invention relates to an alkali-resistant heatproof glass material and a preparation method thereof. The alkali-resistant heatproof glass material comprises following components by weight: 5-7 parts of TeO2, 4-9 parts of K2O, 12-13 parts of SiO2, 4-9 parts of PbO, and 2-3 parts of Y2O3. The glass material is prepared by steps of smashing raw materials, screening, smelting at high temperature, annealing, and the like. The prepared glass material has good alkali resistance and heat stability and can prevent glass product deformation caused by alkali solution corrosion and overhigh temperature so that the glass product can be used for a long time.

Description

technical field [0001] The invention relates to a glass material and a preparation method thereof, in particular to a glass material with good alkali resistance and thermal stability and a preparation method thereof. Background technique [0002] The composition of most glass contains silicate components, such as sodium silicate, potassium silicate and so on. The presence of these components can restrict the use of glass. If the main composition of the glass is silicate, its alkali resistance is poor. After a long time of contact with lye, the surface of the glass will not be smooth, which will affect the performance of the glass. Like most substances, glass will expand to a certain extent after being heated. Excessive expansion of glass will affect the stability of glass. [0003] Conventional glass materials have poor alkali resistance and high thermal expansion coefficient, and the appearance of glass will be corroded in an alkaline environment for a long time. At...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C3/07
Inventor 黄林冲顾海波曹承
Owner JIANGSU AOLAN ARCHITECTURE GLASS
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