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Infrared optical glass with high refractive index, and preparation method thereof

A technology of infrared optics and high refractive index, applied in glass manufacturing equipment, glass molding, manufacturing tools, etc., can solve the problems of poor chemical stability, decreased compressive strength, and reduced chemical stability of phosphate glass

Inactive Publication Date: 2021-08-13
南通腾峰光学仪器有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, since the phosphorus-oxygen tetrahedron also has a phosphorus-oxygen double bond, the structure is asymmetrical, which in turn leads to poor chemical stability and a large expansion coefficient of the phosphate glass, and an alkali metal oxide needs to be added during the preparation process. It is used to provide free oxygen, and the non-bridging oxygen increases, so that the phosphate, which was originally a layered structure, becomes a chain structure, which leads to a decrease in compressive strength and chemical stability. Therefore, during the preparation process, boric acid will continue to volatilize, so when boric acid is added, it needs to be continuously replenished to ensure the content of boron oxide. Volatile boric acid will not only pollute the environment, but also cause harm to the human body. Therefore, a high refraction High-efficiency infrared optical glass and its preparation method are particularly important

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A high-refractive-index infrared optical glass, the raw materials of each component are as follows, in parts by weight, including 30 parts of quartz, 40 parts of phosphorus pentoxide, 20 parts of anhydrous Glauber's salt, 25 parts of boric acid, 5 parts of potassium nitrate, and dolomite 20 parts, 3 parts of barium oxide, 1 part of barium chloride, 3 parts of zinc oxide, 5 parts of titanium oxide, 5 parts of kaolin, 4 parts of carbon powder.

[0029] A preparation method of high refractive index infrared optical glass, the steps are as follows,

[0030] (1) Grinding and grinding the quartz, screening it with a hexagonal sieve with a mesh size of 20 mm, pickling it with hydrochloric acid, and washing it with water to obtain quartz sand;

[0031] (2) Grinding anhydrous Glauber's salt, adding carbon powder for mixing, the mass ratio of added carbon powder to anhydrous Glauber's salt is 5%, stirring, adding barium chloride, stirring, and mixing evenly to obtain mixture A; ...

Embodiment 2

[0038] A kind of high refractive index infrared optical glass, the raw materials of each component are as follows, calculated according to weight parts, including 35 parts of quartz, 45 parts of phosphorus pentoxide, 25 parts of anhydrous Glauber's salt, 28 parts of boric acid, 7 parts of potassium nitrate, dolomite 23 parts, 4 parts barium oxide, 2 parts barium chloride, 4 parts zinc oxide, 6 parts titanium oxide, 7 parts kaolin, 5 parts carbon powder.

[0039] A preparation method of high refractive index infrared optical glass, the steps are as follows,

[0040] (1) Grinding and grinding the quartz, screening it with a hexagonal sieve with a mesh size of 23 mm, pickling it with hydrochloric acid, and washing it with water to obtain quartz sand;

[0041] (2) Grinding anhydrous Glauber's salt, adding carbon powder for mixing, the mass ratio of added carbon powder to anhydrous Glauber's salt is 6%, stirring, adding barium chloride, stirring, and mixing evenly to obtain mixture...

Embodiment 3

[0048] A high-refractive-index infrared optical glass, the raw materials of each component are as follows, in parts by weight, including 40 parts of quartz, 50 parts of phosphorus pentoxide, 30 parts of anhydrous Glauber's salt, 30 parts of boric acid, 10 parts of potassium nitrate, dolomite 25 parts, barium oxide 5 parts, barium chloride 3 parts, zinc oxide 5 parts, titanium oxide 7 parts, kaolin 10 parts, carbon powder 5 parts.

[0049] A preparation method of high refractive index infrared optical glass, the steps are as follows,

[0050] (1) Grinding and grinding the quartz, screening it with a hexagonal sieve with a mesh size of 25 mm, pickling it with hydrochloric acid, and washing it with water to obtain quartz sand;

[0051] (2) Grinding anhydrous Glauber's salt, adding carbon powder for mixing, the mass ratio of added carbon powder to anhydrous Glauber's salt is 6%, stirring, adding barium chloride, stirring, and mixing evenly to obtain mixture A;

[0052] (3) Put th...

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Abstract

The invention discloses an infrared optical glass with a high refractive index, and a preparation method thereof. The infrared optical glass comprises 30-40 parts of quartz, 40-50 parts of phosphorus pentoxide, 20-30 parts of anhydrous mirabilite, 25-30 parts of boric acid, 5-10 parts of potassium nitrate, 20-25 parts of dolomite, 3-5 parts of barium oxide, 1-3 parts of barium chloride, 3-5 parts of zinc oxide, 5-7 parts of titanium oxide, 5-10 parts of kaolin and 4-5 parts of carbon powder. According to the invention, aluminum oxide and boron oxide are added, and the added aluminum oxide and boron oxide can form an aluminum phosphate and boron phosphate combination with phosphorus oxide, so that a chain structure is converted into a more stable layered structure, and the chemical stability and compressive strength are improved; and silica is introduced, a stable network structure of aluminum phosphate-boron phosphate-silicon dioxide is formed.

Description

technical field [0001] The invention relates to the technical field of optical glass, in particular to a high-refractive-index infrared optical glass and a preparation method thereof. Background technique [0002] Phosphate glass mainly composed of alumina, boron oxide, and phosphorus pentoxide has the advantages of low dispersion, good light transmittance, and high refractive index because the basic structure of phospho-oxygen glass is phosphorus-oxygen tetrahedron. , are widely used in the field of optics. [0003] However, since the phosphorus-oxygen tetrahedron also has a phosphorus-oxygen double bond, the structure is asymmetrical, which in turn leads to poor chemical stability and a large expansion coefficient of the phosphate glass, and an alkali metal oxide needs to be added during the preparation process. It is used to provide free oxygen, and the non-bridging oxygen increases, so that the phosphate, which was originally a layered structure, becomes a chain structu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C6/04C03C1/00C03B19/02C03B25/00
CPCC03B19/02C03B25/00C03C1/00
Inventor 王志峰
Owner 南通腾峰光学仪器有限公司
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