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Lead-free crystal glass and preparation method thereof

A technology of crystal glass and glass, applied in glass manufacturing equipment, glass furnace equipment, manufacturing tools, etc., can solve problems such as personal injury and environmental pollution, and achieve low reaction temperature and reaction time, high clarity, and low density. Effect

Active Publication Date: 2016-06-01
岳阳市昱华玻璃制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this kind of glass will cause environmental pollution and personal injury in the process of production, processing and use.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Formulation: SiO 2 45%; B 2 o 3 4.1%;K 2 O6.1%; MnO 2 0.01%; PrO 2 8%;TiO 2 6.3%; 2 o 3 15.03%; ZnO6.5%; Y 2 o 3 4.2%; Se 2 NaSbCl 6 4.1% and TeO 2 0.36%.

[0039] Preparation process: S1, In at 800°C 2 o 3 , B 2 o 3 and K 2 O carries out batching, obtains A material,

[0040] S2, mix SiO into material A 2 , PrO 2 , TeO 2 and Se 2 NaSbCl 6 , heating up to 1350°C within 0.5 hours and melting for 1 hour to obtain material B;

[0041] S3, add Y to material B in sequence 2 o 3 、TiO 2 and ZnO, adding MnO after heating up to 1450°C within 0.5 hours 2 , continue to melt for 3 hours to obtain molten glass;

[0042] S4, molding the molten glass at 1150°C;

[0043]S5. The formed glass is annealed at 700° C. for 6 hours to obtain a finished product.

[0044] The sample is detected, and its optical constant refractive index (n d ) is 1.58, and the dispersion coefficient (v d ) is 33, the density is 2.3g / m 3 , the glass has good acid and alkali resis...

Embodiment 2

[0046] Formulation: SiO 2 52%; B 2 o 3 5.2%;K 2 O8.1%; MnO 2 0.03%; PrO 2 5.4%;TiO 2 7.4%; 2 o 3 12.05%; ZnO3.9%; Y 2 o 3 3.7%; Se 2 NaSbCl 6 2.1% and TeO 2 0.12%.

[0047] Preparation process: S1, In at 850°C 2 o 3 , B 2 o 3 and K 2 O carries out batching, obtains A material,

[0048] S2, mix SiO into material A 2 , PrO 2 , TeO 2 and Se 2 NaSbCl 6 , heating up to 1350°C within 0.5 hours and melting for 1 hour to obtain material B;

[0049] S3, add Y to material B in sequence 2 o 3 、TiO 2 and ZnO, adding MnO after heating up to 1450°C within 0.5 hours 2 , continue to melt for 3 hours to obtain molten glass;

[0050] S4, molding the molten glass at 1250°C;

[0051] S5. The formed glass is annealed at 700° C. for 6 hours to obtain a finished product.

[0052] The sample is detected, and its optical constant refractive index (n d ) is 1.62, and the dispersion coefficient (v d ) is 46, and the density is 2.7g / m 3 , the glass has good acid and alkal...

Embodiment 3

[0054] Formulation: SiO 2 48.41%; B 2 o 3 4.6%;K 2 O7.9%; MnO 2 0.02%; PrO 2 12%;TiO 2 6.6%; 2 o 3 8.5%; ZnO5.5%; Y 2 o 3 3.9%; Se 2 NaSbCl 6 2.4% and TeO 2 0.17%.

[0055] Preparation process: S1, In at 820°C 2 o 3 , B 2 o 3 and K 2 O carries out batching, obtains A material,

[0056] S2, mix SiO into material A 2 , PrO 2 , TeO 2 and Se 2 NaSbCl 6 , heating up to 1350°C within 0.5 hours and melting for 1 hour to obtain material B;

[0057] S3, add Y to material B in sequence 2 o 3 、TiO 2 and ZnO, adding MnO after heating up to 1450°C within 0.5 hours 2 , continue to melt for 3 hours to obtain molten glass;

[0058] S4, molding the molten glass at 1180°C;

[0059] S5. The formed glass is annealed at 700° C. for 6 hours to obtain a finished product.

[0060] The sample is detected, and its optical constant refractive index (n d ) is 1.6, and the dispersion coefficient (v d ) is 40, and the density is 2.5g / m 3 , the glass has good acid and alkali...

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Abstract

The invention discloses lead-free crystal glass and a preparation method thereof. The lead-free crystal glass is prepared from, by weight, 45%-52% of SiO2, 4.1%-5.2% of B2O3, 6.1%-8.1% of K2O, 0.3%-0.6% of MnO2, 5.4%-12% of PrO2, 6.3%-7.4% of TiO2, 8.5%-16.9% of In2O3, 3.9%-6.5% of ZnO, 3.7%-4.2% of Y2O3 and 2.1%-4.1% of Se2NaSbCl6. The lead-free crystal glass has the optical constant refractive index (n<d>) within the range of 1.58-1.62, the abbe number (v<d>) within the range of 33-46 and the density within the range of 2.3-2.7 g / m<3> and has the good chemical stability and technological property.

Description

technical field [0001] The invention relates to a glass and a preparation method thereof. More specifically, the invention relates to a lead-free crystal glass with high light transmission, no air bubbles and no biological toxicity and a preparation method thereof. Background technique [0002] Up to now, crystal glass containing lead and arsenic is still used in many fields such as decoration, lighting and handicrafts. However, this kind of glass all causes environmental pollution and personal injury in the process of production, processing and use. As early as many years ago, Japan and the European Union have issued laws and regulations prohibiting the manufacture and processing of lead glass products. The European Union has banned the import of all conventional lead glass products since July 2006. Therefore, lead-free and arsenic-free crystals are used It has become a top priority to replace crystal glass containing lead and arsenic with high-quality glass. Contents o...

Claims

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Application Information

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IPC IPC(8): C03C3/11C03C1/00C03B5/16
CPCC03B5/16C03C1/00C03C3/11
Inventor 于田荣于田观于伟明
Owner 岳阳市昱华玻璃制品有限公司