Glass composition

A glass composition, P2O5 technology, applied in the field of glass composition, can solve the problems of cracking, reducing the glass yield, reducing the service life of the glass, etc., and achieving the effects of low thermal expansion coefficient and excellent chemical stability

Active Publication Date: 2021-06-25
CDGM OPTICAL GLASS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, due to the large thermal expansion coefficient of glass, it is easy to cause cracks during thermal processing, which reduces the yield rate of glass; at the same time, its thermal shock resistance is also poor. It is used in the fields of vehicles, monitoring and security, etc., which will reduce the quality of glass. service life

Method used

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Experimental program
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Embodiment

[0133]

[0134] In order to further clearly illustrate and illustrate the technical solution of the present invention, the following non-limiting examples are provided.

[0135] In this example, glass compositions having the compositions shown in Tables 2 to 4 were obtained by using the above-mentioned manufacturing method of the glass composition. In addition, the characteristics of each glass are measured by the test method described in the present invention, and the measurement results are shown in Tables 2 to 4, where P 2 o 5 , Nb 2 o 5 、WO 3 、TiO 2 , B 2 o 3 、Al 2 o 3 , RO and Rn 2 The total content of O is represented by A, P 2 o 5 、 Bi 2 o 3 , Nb 2 o 5 、WO 3 、TiO 2 and Rn 2 The total content of O is represented by B.

[0136] Table 2.

[0137]

[0138]

[0139] table 3.

[0140]

[0141]

[0142]

[0143] Table 4.

[0144]

[0145]

[0146]

[0147] The glass obtained in Examples 1 to 20 of the glass composition is used, fo...

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Abstract

The invention provides a glass composition, which comprises the following components in percentage by weight: 0.3-1.3% of (Nb2O5+TiO2) / Bi2O3, 0.6-2.3% of Bi2O3 to (Nb2O5+P2O5); 1.0-15.0% of (Nb2O5+P2O5) / WO3; 0.4-2.0% of (Nb2O5+P2O5+TiO2+RO) / (Bi2O3+WO3); 0.2% or more of WO3 / Rn2O; and 0.5-2.5% of (Nb2O5+WO3+TiO2+P2O5) / Bi2O3, wherein the refractive index nd of the glass composition is 1.94 or more, and the Abbe number vd of the glass composition is 25 or less. Through reasonable component design, the glass composition obtained by the invention has excellent chemical stability and lower thermal expansion coefficient.

Description

technical field [0001] The invention relates to a glass composition, in particular to a glass composition with excellent chemical stability and low coefficient of thermal expansion. Background technique [0002] With the continuous integration of optics, electronic information science, and new material science, the application of glass as the basic material of optoelectronics in the fields of optical transmission, optical storage, and optoelectronic display is advancing by leaps and bounds. In recent years, optical instruments have developed rapidly in terms of digitalization, integration and high precision, which put forward higher requirements for the performance of glass used in optical instruments and optical components of equipment. Glass compositions with a high refractive index are widely in demand because they can achieve a larger viewing angle with a smaller volume, thereby reducing the number of optical components used in optical instruments. [0003] Optical comp...

Claims

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Application Information

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IPC IPC(8): C03C3/21C03C3/062C03C3/066
CPCC03C3/21C03C3/062C03C3/066
Inventor 匡波
Owner CDGM OPTICAL GLASS
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