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A kind of preparation method of high niobium low lanthanum optical glass containing titanium

A kind of optical glass, high niobium technology, applied in the field of preparation of high niobium and low lanthanum optical glass, can solve the problem of glass crystallization that cannot be solved, the glass crystallization tendency is large, and the glass erosion is increased, so as to shorten the clarification and homogenization of glass time, glass devitrification tendency is small, and the effect of glass defect is small

Active Publication Date: 2018-03-06
湖北戈碧迦光电科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the crystallization tendency of the glass in this system is large, and the temperature of the glass produced in small batches is cooled quickly. The problem of glass crystallization in large-scale production cannot be solved, and the SrO and BaO components contained will increase the density of the glass and increase the erosion of the glass on the crucible.

Method used

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  • A kind of preparation method of high niobium low lanthanum optical glass containing titanium
  • A kind of preparation method of high niobium low lanthanum optical glass containing titanium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A preparation method of titanium-containing high-niobium and low-lanthanum optical glass,

[0042] The first step, batch preparation

[0043] 1) Weigh 20.8wt% of quartz sand, 9wt% of anhydrous boric anhydride, 4wt% of barium carbonate, 2.5wt% of barium nitrate, 11wt% of titanium dioxide, and 15wt% of dilanthanum trioxide according to mass percentage , the calcium carbonate of 15.65 wt%, the zirconium dioxide of 3wt%, the anhydrous sodium carbonate of 3 wt%, the niobium pentoxide of 15 wt%, the aluminum hydroxide of 1 wt%, the antimony trioxide of 0.05 wt%;

[0044] 2) Put the weighed anhydrous boric anhydride, barium nitrate, calcium carbonate, and antimony trioxide into the V-shaped mixer and mix for 15 minutes to form a small mixed material;

[0045] 3) Put the uniformly mixed small material and the remaining several other raw materials into the QH type strong mixer, spray into the distilled water with a mass fraction of 3% of the batch material, mix for 3 minutes, a...

Embodiment 2

[0066] A preparation method of titanium-containing high-niobium and low-lanthanum optical glass,

[0067] The first step, batch preparation

[0068] 1) Weigh 18wt% quartz sand, 11wt% anhydrous boric anhydride, 5wt% barium carbonate, 3wt% barium nitrate, 10wt% titanium dioxide, 16wt% lanthanum trioxide, 14wt% by mass percentage % calcium carbonate, 3.3wt% zirconium dioxide, 2.6wt% anhydrous sodium carbonate, 16wt% niobium pentoxide, 1.07wt% aluminum hydroxide, 0.03wt% antimony trioxide;

[0069] 2) Put the weighed anhydrous boric anhydride, barium nitrate, calcium carbonate, and antimony trioxide into the V-shaped mixer and mix for 20 minutes to form a small mixed material;

[0070] 3) Put the uniformly mixed small material and the remaining several other raw materials into the QH type strong mixer, spray into the distilled water with a mass fraction of 4% of the batch material, mix for 4 minutes, and mix until the uniformity is greater than 98.5%. of ingredients.

[0071] T...

Embodiment 3

[0090] A preparation method of titanium-containing high-niobium and low-lanthanum optical glass,

[0091] The first step, batch preparation

[0092] 1) Weigh 19wt% quartz sand, 8wt% anhydrous boric anhydride, 3wt% barium carbonate, 2wt% barium nitrate, 9wt% titanium dioxide, 17wt% lanthanum trioxide, 16wt% calcium carbonate, 4 wt% zirconium dioxide, 2wt% anhydrous sodium carbonate, 16 wt% niobium pentoxide, 3.96wt% aluminum hydroxide, 0.04 wt% antimony trioxide;

[0093] 2) Put the weighed anhydrous boric anhydride, barium nitrate, calcium carbonate, and antimony trioxide into the V-shaped mixer and mix for 15 minutes to form a small mixed material;

[0094] 3) Put the uniformly mixed small material and the remaining several other raw materials into the QH type powerful mixer, spray into the distilled water with a mass fraction of 5% of the batch material, mix for 5 minutes, and mix until the uniformity is greater than 98.5%. of ingredients.

[0095] The second step, pre-me...

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Abstract

The invention discloses a preparation method of titanium-containing high-niobium and low-lanthanum optical glass. First, quartz sand, anhydrous boric anhydride, barium carbonate, barium nitrate, titanium dioxide, lanthanum trioxide, calcium carbonate, zirconium Sodium carbonate water, niobium pentoxide, aluminum hydroxide, and antimony trioxide are uniformly mixed to obtain batch materials; then melted at high temperature in an air atmosphere to form molten glass, and then the molten glass is cast into shape, and cooled rapidly to room temperature, after crushing Add a small amount of raw material and put it into a multi-stage melting furnace for re-melting. After being stirred, clarified and homogenized, it is formed. After inspection and secondary annealing, the titanium-containing high-niobium and low-lanthanum optical glass is obtained. The optical glass has high refractive index, small dispersion, high light transmittance, low glass crystallization tendency, excellent chemical stability, does not contain heavy metal oxides Gd2O3, Ta2O5, PbO, WO3, etc., and can achieve large size, zero defect, continuous The preparation process is simple, the cost is low, and it is suitable for industrial production.

Description

technical field [0001] The invention belongs to the technical field of optical glass, and in particular relates to a preparation method of titanium-containing high-niobium and low-lanthanum optical glass. Background technique [0002] Lanthanide optical glass is widely used in various optical instruments due to its high refractive index and low dispersion, such as digital cameras, digital video cameras, CDROMs, scanners and other digital optoelectronic products. The electronic shell structure of lanthanum is (Xe)5d 1 6S 2 , easy to lose 5d, 6s electrons after the electron layer distribution is inert, electronegativity is 1.2. Often La in optical glass 3+ Ionic interstitials are combined with oxygen by ionic bonds in the structural gaps of the boron-oxygen group, and the weaker lanthanum-oxygen bonds with lanthanum oxygen to fix a certain direction and changeable coordination relationship can even migrate together in its form; La 3+ for 4f 1 , and not easily polarized, i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C3/068
Inventor 吴林海
Owner 湖北戈碧迦光电科技股份有限公司
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