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Composite clarifying used in production technology of contact screen cover plate glass

A composite clarifier and cover glass technology, which is applied in the field of glass clarifiers, can solve problems such as large economic burden, unfavorable environmental protection, and high price, and achieve the effects of promoting clarification, low cost, and reducing glass density

Active Publication Date: 2014-12-17
TUNGHSU GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Arsenic has a good clarification effect, but due to the toxicity of arsenic, it brings a great economic burden to production and disposal
Antimony is a substitute for arsenic that appeared later. Although it can achieve certain clarification purposes and reduce toxicity, it is still harmful and expensive, which is not conducive to environmental protection.

Method used

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  • Composite clarifying used in production technology of contact screen cover plate glass
  • Composite clarifying used in production technology of contact screen cover plate glass
  • Composite clarifying used in production technology of contact screen cover plate glass

Examples

Experimental program
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Effect test

Embodiment Construction

[0009] A compound clarifier used in the production process of touch screen cover glass, used to eliminate bubbles in molten glass, it is important that NaCl is used as the main material in the clarifier formula components, supplemented by SnO and K 2 SO 4 , wherein, the weight percent content of above component is:

[0010] NaCl 74~93%,

[0011] SnO 2~8%,

[0012] K 2 SO 4 5~18%.

[0013] The NaCl, SnO, K 2 SO 4 The dosage form is powder.

[0014] The particle size range of the NaCl is 80-350 mesh.

[0015] The particle size range of the SnO is 100-400 mesh.

[0016] The K 2 SO 4 The particle size range is 100-330 mesh.

[0017] In specific implementation, the composition of the touch screen cover glass used to verify the effect of this clarifying agent (not including the clarifying agent part) is:

[0018] SiO 2 65.7%,

[0019] al 2 o 3 14.5%,

[0020] B 2 o 3 3%,

[0021] KO 2 2.8%,

[0022] NaO 2 ...

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Abstract

The invention discloses a composite clarifying agent, which is used in the production technology of a contact screen cover plate glass to eliminate the bubbles in molten glass. The clarifying agent is composed of a main material (NaCl) and two auxiliary materials (SnO and K2SO4), wherein the NaCl accounts for 74 to 93% of the total weight of the clarifying agent, SnO accounts for 2 to 8% of the total weight of the clarifying agent, and K2SO4 accounts for 5 to 18% of the total weight of the clarifying agent. The composite clarifying agent can guarantee the clarifying effect, and at the same time has the advantages of light weight and easiness for chemical toughening.

Description

technical field [0001] The invention belongs to the technical field of glass clarifiers, in particular to a composite clarifier used in the production process of touch screen cover glass. Background technique [0002] Air bubbles formed by contaminants in the glass melt are called "air seeds". The existence of air seeds has an impact on the refractive index, density and light transmittance of glass. The process of removing bulk inclusions from the melt is called fining or refining of glass. The chemical components introduced into the glass to achieve the clarification effect are called clarifiers. Traditional clarifiers are mostly arsenic oxides or acids, and the content usually accounts for 0.9-1.1% (weight percentage) of the glass. Arsenic has a good clarification effect, but due to the toxicity of arsenic, it brings a great economic burden to the production and treatment. Antimony is a substitute for arsenic that appeared later. Although it can achieve certain clarifi...

Claims

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Application Information

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IPC IPC(8): C03C1/00
Inventor 高强闫冬成李俊锋张广涛刘文泰
Owner TUNGHSU GRP
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