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Composite decoloring agent used for improving transparency and refractive index of lead-free high-refraction crystalline glass

A technology of crystal glass and transparency, applied in the field of composite decolorizers, can solve the problems of unsatisfactory improvement of refractive index, and achieve the effects of large polarizability, elimination of pollution, and improvement of refractive index

Inactive Publication Date: 2014-04-09
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

However, from the technical effect of this patent, after adding the decolorizing agent, the refractive index of the glass is increased from 1.51892 to 1.51901, which is not ideal for the improvement of the refractive index.

Method used

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  • Composite decoloring agent used for improving transparency and refractive index of lead-free high-refraction crystalline glass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Select the composite decolorizing agent component (weight percent of the total amount of the batch):

[0041] Sb 2 o 3 : 0.2%, NaNO 3 : 3.5%, Er 2 o 3 : 0.015%, Nd 2 o 3 : 0.04%, the above components are mixed to form a composite decolorizing agent.

[0042] Select the base glass component:

[0043] SiO2 : 54.05%, Al 2 o 3 : 0.55%, TiO 2 : 12.9, CaO: 1.30%, BaO: 14.7%, K 2 O: 3.5%, Na 2 O: 9.5%.

[0044] The above-mentioned basic glass is accurately weighed, fully mixed and evenly divided into two parts, one part is directly melted (sample 1), and the other part is mixed with a decolorizing agent and then melted (sample 2), both of which are made into 4mm thick sample.

[0045] Sample 1: Refractive index: 1.620, transmittance: 89.55%; Sample 2: Refractive index: 1.631 Transmittance: 91.06%.

Embodiment 2

[0047] Select the composite decolorizing agent component (weight percent of the total amount of the batch):

[0048] Sb 2 o 3 : 0.2%, NaNO 3 : 3.5%, CoO: 0.0001%, Er 2 o 3 : 0.02%, Nd 2 o 3 : 0.06%, the above components are mixed to form a composite decolorizing agent.

[0049] Select the base glass component:

[0050] SiO 2 : 50.05%, Al 2 o 3 : 0.55%, TiO 2 : 16.9, CaO: 1.30%, BaO: 14.7%, K 2 O: 3.5%, Na 2 O: 9.5%.

[0051] Accurately weigh the above-mentioned basic glass ingredients, mix them thoroughly and evenly divide them into two parts, one part is melted directly (sample 1), and the other part is mixed evenly with the decolorizer and then melted (sample 2), both of which are made into 4mm thick sample.

[0052] Sample 1: Refractive index: 1.643 Transmittance: 88.21%; Sample 2: Refractive index: 1.652 Transmittance: 88.83%.

Embodiment 3

[0054] Select the composite decolorizing agent component (weight percent of the total amount of the batch):

[0055] Sb 2 o 3 : 0.2%, NaNO 3 : 3.5%, CoO: 0.0001%, Er 2 o 3 : 0.05%, Nd 2 o 3 : 0.1%, the above components are mixed to form a composite decolorizing agent.

[0056] Select the base glass component:

[0057] SiO 2 : 36.05%, Al 2 o 3 : 0.55%, TiO 2 : 25.9, CaO: 1.30%, BaO: 19.7%, K 2 O: 3.5%, Na 2 O: 9.5%.

[0058] Accurately weigh the above-mentioned basic glass ingredients, mix them thoroughly and evenly divide them into two parts, one part is melted directly (sample 1), and the other part is mixed evenly with the decolorizer and then melted (sample 2), both of which are made into 4mm thick sample.

[0059] Sample 1: Refractive index: 1.743 Transmittance: 87.46%; Sample 2: Refractive index: 1.752 Transmittance: 88.05%.

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Abstract

The invention relates to a composite decoloring agent used for improving the transparency and refractive index of lead-free high-refraction crystalline glass. The composite decoloring agent contains the following components in percentage accounting for the total weight of batch: 0%-0.35% of Sb2O3, 0%-4.5% of XNO3, 0.010%-0.25% of Er2O3, and 0.015%-0.5% of Nd2O3, wherein X is Na and / or K. The composite decoloring agent provided by the invention can effectively eliminate ferrotitanium coloring in glass, so that good 'whiteness' and transparency still can be shown when TiO2 doping amount reaches above 15%, the refractive index of the lead-free crystalline glass can be greatly improved, finally leaded crystalline glass is replaced with the lead-free crystalline glass, and the environmental pollution caused by the production of the leaded crystalline glass is eliminated.

Description

technical field [0001] The invention relates to a composite decolorizer for improving the transparency and refractive index of lead-free high-refraction crystal glass, and belongs to the technical field of environment-friendly high-refraction crystal glass. Background technique [0002] Refractive index and transparency are one of the most important optical properties of crystal glass. High refractive index and excellent transparency can bring extremely dazzling refraction effects to the glass. Therefore, the maximization of refractive index, transparency and the balance between the two are The biggest pursuit of crystal glass producers and consumers. [0003] According to the two international standards on crystal glass [the crystal glass standard stipulated by EEC (European Economic Community) and the British supplementary regulations on crystal glass based on the EEC standard in 1983], it can be concluded that lead crystal The refractive index of high-quality glass shoul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C1/00
Inventor 彭志钢杜晓鸥田培静郑伟宏李诗文潘清涛程金树
Owner GLASS TECH RES INST OF SHAHE CITY OF HEBEI PROVINCE