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A kind of special dispersion glass and its preparation method

A glass and dispersion technology, applied in the field of special dispersion glass and its preparation, can solve the problems of unfriendly environment and difficult control of optical uniformity, and achieve the effect of reducing erosion, avoiding clarification and homogenization, and improving optical uniformity

Active Publication Date: 2018-08-10
CHINA BUILDING MATERIALS ACAD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a special dispersion glass and its preparation method, to solve the problems of unfriendly environment and difficult control of optical uniformity in the preparation of special dispersion glass in the prior art, to achieve high optical uniformity and Preparation of special dispersion glass with large negative anomalous dispersion, and the preparation process is environmentally friendly

Method used

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  • A kind of special dispersion glass and its preparation method
  • A kind of special dispersion glass and its preparation method

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Effect test

Embodiment 1

[0039] According to the glass composition in Table 1, take the raw material of corresponding weight, wherein Li 2 O, Na 2 O and K 2 The raw material corresponding to O is each oxide itself, the raw material corresponding to ZnO is its carbonate, and the raw material corresponding to Y is 2 o 3 The corresponding raw material is nitrate; after these raw materials are mixed evenly, the first step of melting is carried out in a quartz crucible to generate glass clinker, and then the glass clinker is poured on the calendering table, cooled and formed, crushed and then added In the strengthened Pt crucible, the second step of fine melting is carried out. The melting temperature of the first step is 1150°C and the melting time is 2h. The temperature of the second melting step is 1300°C and the melting time is 4h. , the strengthened Pt crucible is placed in the kiln; 10 minutes before feeding the strengthened Pt crucible, start to pass high-purity Ar into the strengthened Pt crucib...

Embodiment 2

[0041] According to the glass composition in Table 1, take the raw material of corresponding weight, wherein Na 2 O and K 2 The raw material corresponding to O is the corresponding carbonate, the raw material corresponding to MgO is the corresponding nitrate, and the Y 2 o 3 and Ga 2 o 3 The corresponding raw materials are the oxides themselves; after these raw materials are mixed evenly, the first step of melting is carried out in the quartz crucible to generate glass clinker, and then the glass clinker is poured on the calendering table, and after cooling, forming and crushing Put it into the strengthened Pt crucible for the second step of fine melting, in which the melting temperature of the first step is 1200 ° C, the melting time is 3 hours, the temperature of the second melting step is 1400 ° C, the melting time is 6 hours, and the second step is melting , the strengthened Pt crucible was placed in the furnace; 5 minutes before feeding into the strengthened Pt crucib...

Embodiment 3

[0043] According to the glass composition in Table 1, take the raw material of corresponding weight, wherein Li 2 O and Na 2 The raw materials corresponding to O are the corresponding nitrates, the raw materials corresponding to SrO and ZnO are the oxides themselves, and the Y 2 o 3 The corresponding raw material is carbonate; after these raw materials are mixed evenly, the first step of melting is carried out in the quartz crucible to generate glass clinker, and then the glass clinker is poured on the calendering table, and after cooling, forming and crushing Put it into the strengthened Pt crucible for the second step of fine melting, in which the melting temperature of the first step is 1150°C and the melting time is 2.5h, the melting temperature of the second step is 1350°C and the melting time is 5h, the second step When melting, the strengthened Pt crucible was placed in the furnace; 20 minutes before feeding into the strengthened Pt crucible, high-purity N was introdu...

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Abstract

The invention discloses a special dispersion glass and a preparation method thereof, belonging to the field of optical glass. The special dispersion glass comprises the following oxide components in percentage by weight: 30-50% of SiO2, 10-20% of B2O3, 10-20% of HfO2, 5-20% of Nb2O5, 7-15% of R2O (R2O is one or more of Li2O, Na2O and K2O), 2-8% of R'O (R'O is one or more of MgO, SrO and ZnO), 3-15% of M2O3 (M2O3 is one or more of Sc2O3, Y2O3 and Ga2O3) and 0.6-2% of Sb2O3. The method solves the problems of environment unfriendliness and uncontrollable optical uniformity in the special dispersion glass preparation process in the prior art, implements preparation of the special dispersion glass with high optical uniformity and high negative anomalous dispersion, and is environment-friendly in the preparation process.

Description

technical field [0001] The invention relates to the field of optical glass, in particular to a special dispersion glass and a preparation method thereof. Background technique [0002] Relative partial dispersion of most optical glasses and Abbe number ν d The relationship conforms to Abbe's formula and is approximately a straight line. This straight line is called the "normal line" of optical glass. The normal line is determined by the optical constants of Schott's N-BK7 and F2 glasses. Special dispersion glass is a kind of optical glass that deviates far from the normal line. Special dispersion glass not only has the general properties of optical glass, such as specific optical constants, high light transmittance, excellent optical uniformity and good chemical stability, but also has special properties, that is, a large relative partial dispersion deviation value ΔP g,F . In order to eliminate the secondary spectrum in the optical system, a special dispersion optical ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C3/066C03C3/068C03C3/089C03C4/00C03B5/16
CPCY02P40/57
Inventor 王衍行祖成奎许晓典周鹏刘永华赵慧峰
Owner CHINA BUILDING MATERIALS ACAD
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