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A glass clarifying agent for high borosilicate glass and its preparation method and application

A technology of silicate glass and clarifying agent, which is applied in the field of glass clarifying agent for high borosilicate glass and its preparation, and composite glass clarifying agent, which can solve the problem of difficult production technology and no heat-resistant borosilicate float method Production line and other problems, to achieve good clarification effect, enhance clarification ability, and reduce coloring

Active Publication Date: 2019-12-17
GLASS TECH RES INST OF SHAHE CITY OF HEBEI PROVINCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Borosilicate glass is now mainly used in non-flat plate fields such as instrument glass and container glass. Due to the difficulty in production technology in the flat plate field, there is currently no mature heat-resistant borosilicate float production line in China.

Method used

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  • A glass clarifying agent for high borosilicate glass and its preparation method and application
  • A glass clarifying agent for high borosilicate glass and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A glass clarifying agent for high borosilicate glass, comprising the following components: 4.5 parts of sodium sulfate, 0.9 parts of cerium oxide, 0.3 parts of lanthanum oxide, 0.8 parts of tin dioxide, 0.9 parts of carbon powder, and 4.5 parts of sodium chloride.

[0022] The clarification effect of the glass added with the clarifier of the present invention after cooling and molding is that there are few large and small bubbles, and the glass is slightly yellow.

Embodiment 2

[0024] A glass clarifying agent for high borosilicate glass, comprising the following components: 5.0 parts of sodium sulfate, 1.1 parts of cerium oxide, 0.4 parts of lanthanum oxide, 0.7 parts of tin dioxide, 1 part of carbon powder, and 4.0 parts of calcium fluoride.

[0025] The clarification effect of the glass added with the clarifier of the present invention after cooling and forming is that bubbles of all sizes are few and colorless.

Embodiment 3

[0027] A glass clarifying agent for high borosilicate glass, comprising the following components: 5.4 parts of sodium sulfate, 1.3 parts of cerium oxide, 0.5 parts of lanthanum oxide, 0.6 parts of tin dioxide, 1.1 parts of carbon powder, and 5.0 parts of sodium fluorosilicate .

[0028] The clarification effect of the glass added with the clarifier of the present invention after cooling and molding is that there are few large and small bubbles, and the glass is slightly yellow.

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Abstract

The present invention discloses a high borosilicate glass clarifying agent belonging to the technical field of glass clarifying agents. The glass clarifying agent is a compound clarifying agent comprising following raw materials in mass ratio: sodium sulfate to cerium oxide to lanthanum oxide to stannic oxide to carbon dust to halides in a mass ratio of (0.6-6.0):(0.01-2.0):(0.01-0.5):(0.01-0.8):(0.01-2.0):(0.5-6.0). The present invention also discloses a preparation method and application of the high borosilicate glass clarifying agent. The high borosilicate glass clarifying agent can realize continuous clarifying action in different temperature stages to ensure that glass liquid can continue to discharge bubbles in the different temperature stages so as to obtain products with a relatively excellent clarifying effect, the condition that the number per square meter of the bubbles greater than 0.02mm is not more than 1 is detected, the clarifying agent is poisonless, harmless, safe, environmentally friendly, and good in clarifying effect. Glass prepared by using the clarifying agent is low in bubble residue, and high in quality.

Description

technical field [0001] The invention belongs to the technical field of glass clarifiers, and relates to a composite glass clarifier, in particular to a glass clarifier for high borosilicate glass and its preparation method and application. The glass clarifier of the invention is nontoxic and harmless, has good clarification effect, simple preparation method, and can be applied to the preparation of glass to produce evenly clarified glass. Background technique [0002] Heat-resistant borosilicate glass is a special glass with low expansion coefficient and good thermal stability. Compared with ordinary soda lime silicate glass, borosilicate glass has obvious advantages in performance. Borosilicate glass is now mainly used in non-flat plate fields such as instrument glass and container glass. Due to the difficulty of production technology in the flat plate field, there is currently no mature heat-resistant borosilicate float production line in China. Due to the high melting te...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C1/00
CPCC03C1/004
Inventor 程金树袁坚苏驰郭振强何聪
Owner GLASS TECH RES INST OF SHAHE CITY OF HEBEI PROVINCE
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