CN115304271A - Rare earth doped glass with excellent optical properties and method for preparing same - Google Patents
Rare earth doped glass with excellent optical properties and method for preparing same Download PDFInfo
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- 239000011521 glass Substances 0.000 title claims abstract description 131
- 230000003287 optical effect Effects 0.000 title claims abstract description 55
- 229910052761 rare earth metal Inorganic materials 0.000 title claims abstract description 33
- 150000002910 rare earth metals Chemical class 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims description 15
- 239000002994 raw material Substances 0.000 claims abstract description 18
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims abstract description 12
- 229910018068 Li 2 O Inorganic materials 0.000 claims abstract description 12
- 229910004298 SiO 2 Inorganic materials 0.000 claims abstract description 7
- 238000000137 annealing Methods 0.000 claims description 42
- 238000001816 cooling Methods 0.000 claims description 28
- 239000000203 mixture Substances 0.000 claims description 26
- 238000000227 grinding Methods 0.000 claims description 17
- 238000002844 melting Methods 0.000 claims description 10
- 230000008018 melting Effects 0.000 claims description 10
- 238000012545 processing Methods 0.000 claims description 9
- 238000007496 glass forming Methods 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 7
- 238000005303 weighing Methods 0.000 claims description 7
- 238000005498 polishing Methods 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims description 5
- 238000000498 ball milling Methods 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims 1
- 230000003595 spectral effect Effects 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 5
- 238000002360 preparation method Methods 0.000 abstract description 5
- 230000004313 glare Effects 0.000 abstract description 4
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- 210000001525 retina Anatomy 0.000 description 2
- 208000002177 Cataract Diseases 0.000 description 1
- YJPIGAIKUZMOQA-UHFFFAOYSA-N Melatonin Natural products COC1=CC=C2N(C(C)=O)C=C(CCN)C2=C1 YJPIGAIKUZMOQA-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/095—Glass compositions containing silica with 40% to 90% silica, by weight containing rare earths
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B19/00—Other methods of shaping glass
- C03B19/02—Other methods of shaping glass by casting molten glass, e.g. injection moulding
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B25/00—Annealing glass products
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
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Abstract
The invention discloses rare earth doped glass with excellent optical performance and a preparation method thereof, and particularly relates to the technical field of glass manufacturing, wherein the glass comprises the following components in molar ratio: 50-70 parts of SiO 2 10-20 parts of Cr 2 O 3 8-15 parts of CaCO 3 30-60 parts of Al 2 O 3 10-15 parts of B 2 O 3 15-22 parts of WO 3 3-5 parts of Li 2 O, 0.1-0.3 part of Ce 2 O 3 0.1-0.4 parts of Rb 2 And O. The rare earth doped glass with excellent optical performance and the preparation method thereof are characterized in that Ce is added into the raw material of the glass 2 O 3 And Rb 2 And O, the prepared rare earth doped glass can absorb light in different spectral ranges in a certain amount, so that the purposes of preventing glare and eliminating halation are achieved, in addition, the color rendering index can be improved, the red/green/blue contrast and the color saturation are enhanced, the color saturation and the definition of imaging are improved, the anti-glare effect can be achieved by effectively absorbing the light in 300-400 nm ultraviolet wave bands, 490-525 nm blue-green light wave bands and 560-605 nm yellow light wave bands, and the optical performance is excellent.
Description
Technical Field
The invention relates to the technical field of glass manufacturing, in particular to rare earth doped glass with excellent optical performance and a preparation method thereof.
Background
The rare earth doped glass is special glass containing one or more rare earth ions and can be used as spectacle lenses, LED lamp covers, camera lenses, medical endoscopes, camera filters and the like. The ability of rare earth doped glasses to absorb light over different spectral ranges determines their performance.
It is well known that light in a particular spectral range can cause damage to the human eye if radiated onto the eye at high intensities or for relatively long exposure durations. Among these, the cornea, lens and retina are particularly sensitive: ultraviolet rays can cause keratitis when the spectrum action peak of human eyes is in the wavelength range of 270nm to 280nm, and in addition, the human eyes are easy to damage crystalline lenses to cause cataract; the human eye spectral action peak of blue light can damage retina in the wavelength range of 420 nm-470 nm, and in sunlight and artificial light sources (such as televisions, mobile phones, computers, LED lamps and the like), yellow light (with the yellow light wavelength range of 560 nm-605 nm) is very strong, so that glare and halation can be generated to people, and eye fatigue can be caused. However, in the existing electronic products, the color composite image is synthesized by the single color emitted by the red, green and blue fluorescent powders, but the yellow light in the synthesized color image is strong, which not only increases the stimulation to eyes, but also reduces the color contrast of the blue, green and red images, so that the eyes of users are more easily tired, and a plurality of eye diseases can be caused by long-time eye use under the environment.
However, blue light in all spectral ranges is not harmful to human eyes, blue light with a spectral action peak in a wavelength range of 480-500 nm has the function of adjusting biological rhythm, can stimulate the generation of cortisol in daytime, inhibit the secretion of melatonin, maintain the state of attention concentration and waking in daytime, and is beneficial to human bodies.
The rare earth glass with more rare earth oxides introduced into the composition of the optical glass has the characteristics of high refractive index and low dispersion, is an indispensable optical material for manufacturing a large-aperture wide-field photographic objective, a long-focal-length zoom lens, a high-power microscope and the like, and has important significance for improving the imaging quality of optical instruments, particularly camera objectives and simplifying the design, so the rare earth glass becomes a key material in the design of optical systems for national defense industry. Rare earth doped glass capable of effectively absorbing and preventing glare at 300-400 nm ultraviolet light wave band, 490-525 nm blue-green light wave band and 560-605 nm yellow light wave band does not appear in the market, so that rare earth doped glass with excellent optical performance and preparation method thereof are provided
Disclosure of Invention
The main object of the present invention is to provide a glass doped with rare earth having excellent optical properties and a method for preparing the same, which can effectively solve the problems of the background art.
In order to realize the purpose, the invention adopts the technical scheme that:
a glass with excellent optical performance doped with rare earth comprises the following components in molar percentage: 50-70 parts of SiO 2 10-20 parts of Cr 2 O 3 8-15 parts of CaCO 3 30-60 parts of Al 2 O 3 10-15 parts of B 2 O 3 15-22 parts of WO 3 3-5 parts of Li 2 O, 0.1-0.3 part of Ce 2 O 3 0.1-0.4 parts of Rb 2 O。
Preferably, the rare earth-doped glass with excellent optical properties comprises the following components in molar composition: 55-64 parts of SiO 2 12-17 parts of Cr 2 O 3 8-12 parts of CaCO 3 35-45 parts of Al 2 O 3 12-14 parts of B 2 O 3 17-20 parts of WO 3 3-5 parts of Li 2 O, 0.1-0.2 part of Ce 2 O 3 0.2-0.4 parts of Rb 2 O。
Preferably, the rare earth-doped glass with excellent optical properties comprises the following components in molar composition: 59 parts of SiO 2 15 parts of Cr 2 O 3 10 parts of CaCO 3 38 parts of Al 2 O 3 13 parts of B 2 O 3 19 parts of WO 3 4 parts of Li 2 O, 0.1 part of Ce 2 O 3 0.4 part of Rb 2 O。
The invention also discloses a method for preparing the rare earth doped glass with excellent optical performance, which comprises the following steps:
s1, preparing raw materials according to a ratio, accurately weighing, grinding and crushing the raw materials, and fully mixing to obtain an initial mixture;
s2, preheating a clinker furnace to raise the temperature of the clinker furnace to be more than 1350 +/-20 ℃, keeping the temperature constant, then putting the initial mixture obtained in the step S1 into the clinker furnace for heating and melting, and after the initial mixture is completely melted, preserving the heat at the temperature for 1-1.5h, standing and clarifying to obtain glass clinker;
and S3, pouring the glass clinker obtained in the step into a glass forming die, and annealing by an annealing furnace to obtain the rare earth-doped glass blank with excellent optical performance.
And S4, processing the glass blank to obtain a glass sample doped with rare earth and having excellent optical performance.
Preferably, in S1, the grinding device used for grinding the raw material is a ball mill, the rotation speed of the cylinder of the ball mill is 36-38r/min, and the particle size of the discharged material is controlled to be 0.1-0.3mm after the ball milling is completed.
Preferably, in S3, the annealing treatment specifically includes: controlling the initial temperature of the annealing furnace to be 480 +/-5 ℃, preserving the heat for 2 hours at the temperature of 480 +/-5 ℃ during annealing treatment, then cooling from 480 +/-5 ℃ to 280 +/-5 ℃ at the cooling rate of 1 ℃/h, and then continuously cooling from 280 +/-5 ℃ to room temperature at the cooling rate of 2 ℃/h to finish the annealing treatment, thus forming the rare earth-doped glass blank with excellent optical performance.
Preferably, the method for processing the glass blank into the glass sample in S3 is to polish the glass sheet to 0.8-1mm, and then cut the glass sheet into 1 × 2cm glass sheet samples.
Compared with the prior art, the invention has the following beneficial effects:
in the present invention, ce is added to the glass raw material 2 O 3 And Rb 2 O, the prepared rare earth doped glass can absorb light in different spectral ranges in a certain amount, so that the purposes of preventing glare and eliminating halation are achieved, in addition, the color rendering index can be improved, the red/green/blue contrast ratio and the color saturation are enhanced, the color saturation and the definition of imaging are improved, the comfort level of human eyes is improved, the fatigue of the human eyes is reduced, and the hidden danger of eye diseases is prevented; the dispersion control effect is good, the object color contrast of images for photographing, photography and observation can be improved, the images can be effectively absorbed in 300-400 nm ultraviolet light wave band, 490-525 nm blue-green light wave band and 560-605 nm yellow light wave band, the anti-dazzle effect is achieved, and the optical performance is excellent.
Drawings
FIG. 1 is a graph showing the results of optical property tests on glass samples prepared in the above examples 1 to 5 according to the present invention.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Example 1
In this example, the rare earth-doped glass having excellent optical properties was prepared as follows:
s1, 50 parts of SiO by mol 2 10 parts of Cr 2 O 3 8 parts of CaCO 3 30 parts of Al 2 O 3 10 parts of B 2 O 3 15 parts of WO 3 3 parts of Li 2 O, 0.1-part of Ce 2 O 3 0.1-part of Rb 2 Preparing raw materials according to the proportion of O, accurately weighing, grinding and crushing the raw materials, and fully mixing to obtain an initial mixture;
s2, preheating a clinker furnace to enable the temperature of the clinker furnace to rise to more than 1350 +/-20 ℃, keeping constant at the temperature, then putting the initial mixture obtained in the step S1 into the clinker furnace for heating and melting, after complete melting, preserving heat for 1-1.5h at the temperature, standing and clarifying to obtain glass clinker;
s3, pouring the glass clinker obtained in the step into a glass forming mold, and annealing the glass clinker by an annealing furnace, wherein the specific method of annealing treatment comprises the following steps: controlling the initial temperature of an annealing furnace to be 480 +/-5 ℃, firstly preserving the heat for 2 hours at the temperature of 480 +/-5 ℃ during annealing treatment, then cooling from 480 +/-5 ℃ to 280 +/-5 ℃ at the cooling rate of 1 ℃/h, then continuously cooling from 280 +/-5 ℃ to room temperature at the cooling rate of 2 ℃/h to finish the annealing treatment, forming the rare earth-doped glass blank with excellent optical performance, and obtaining the rare earth-doped glass blank with excellent optical performance after treatment.
And S4, processing the glass blank to obtain a glass sample doped with rare earth and having excellent optical performance, wherein in the S3, the glass blank is processed into the glass sample by grinding and polishing to obtain a glass sheet with the thickness of 1mm, and then the glass sheet is cut into a glass sheet sample with the thickness of 1 x 2cm.
The sample was taken for use.
Example 2
The rare earth-doped glass having excellent optical properties in this example was prepared as follows:
s1, 55 parts of SiO by molar composition 2 12 parts of Cr 2 O 3 9 parts of CaCO 3 35 parts of Al 2 O 3 12 parts of B 2 O 3 17 parts of WO 3 3 parts of Li 2 O, 0.1 part of Ce 2 O 3 0.2 parts of Rb 2 Preparing raw materials according to the proportion of O, accurately weighing, grinding and crushing the raw materials, and fully mixing to obtain an initial mixture;
s2, preheating a clinker furnace to raise the temperature of the clinker furnace to be more than 1350 +/-20 ℃, keeping the temperature constant, then putting the initial mixture obtained in the step S1 into the clinker furnace for heating and melting, and after the initial mixture is completely melted, preserving the heat at the temperature for 1-1.5h, standing and clarifying to obtain glass clinker;
s3, pouring the glass clinker obtained in the step into a glass forming mold, and annealing the glass clinker by an annealing furnace, wherein the specific method of annealing treatment comprises the following steps: controlling the initial temperature of an annealing furnace to be 480 +/-5 ℃, firstly preserving the heat for 2 hours at the temperature of 480 +/-5 ℃ during annealing treatment, then cooling from 480 +/-5 ℃ to 280 +/-5 ℃ at the cooling rate of 1 ℃/h, then continuously cooling from 280 +/-5 ℃ to room temperature at the cooling rate of 2 ℃/h to finish the annealing treatment, forming the rare earth-doped glass blank with excellent optical performance, and obtaining the rare earth-doped glass blank with excellent optical performance after treatment.
And S4, processing the glass blank to obtain a glass sample doped with rare earth and having excellent optical performance, wherein the glass sample is processed from the glass blank in the S3 by grinding and polishing the glass sample to be a glass sheet with the thickness of 1mm and then cutting the glass sheet to be a glass sheet sample with the thickness of 1 x 2cm.
The sample was taken for use.
Example 3
The rare earth-doped glass having excellent optical properties in this example was prepared as follows:
s1, 59 parts of SiO according to molar composition 2 15 parts of Cr 2 O 3 10 parts of CaCO 3 38 parts of Al 2 O 3 13 parts of B 2 O 3 19 parts of WO 3 4 parts of Li 2 O, 0.1 part of Ce 2 O 3 0.4 part of Rb 2 Preparing raw materials according to the proportion of O, accurately weighing, grinding and crushing the raw materials, and fully mixing to obtain an initial mixture;
s2, preheating a clinker furnace to enable the temperature of the clinker furnace to rise to more than 1350 +/-20 ℃, keeping constant at the temperature, then putting the initial mixture obtained in the step S1 into the clinker furnace for heating and melting, after complete melting, preserving heat for 1-1.5h at the temperature, standing and clarifying to obtain glass clinker;
s3, pouring the glass clinker obtained in the step into a glass forming mold, and annealing the glass clinker by an annealing furnace, wherein the specific method of annealing treatment comprises the following steps: controlling the initial temperature of an annealing furnace to be 480 +/-5 ℃, preserving the heat for 2 hours at the temperature of 480 +/-5 ℃ during annealing treatment, then cooling from 480 +/-5 ℃ to 280 +/-5 ℃ at the cooling rate of 1 ℃/h, then continuously cooling from 280 +/-5 ℃ to room temperature at the cooling rate of 2 ℃/h to finish the annealing treatment, forming the rare earth-doped glass blank with excellent optical performance, and obtaining the rare earth-doped glass blank with excellent optical performance after treatment.
And S4, processing the glass blank to obtain a glass sample doped with rare earth and having excellent optical performance, wherein the glass sample is processed from the glass blank in the S3 by grinding and polishing the glass sample to be a glass sheet with the thickness of 1mm and then cutting the glass sheet to be a glass sheet sample with the thickness of 1 x 2cm.
The sample was taken for use.
Example 4
The rare earth-doped glass having excellent optical properties in this example was prepared as follows:
s1, 64 parts of SiO by mol 2 17 parts of Cr 2 O 3 12 parts of CaCO 3 345 parts of Al 2 O 3 14 parts of B 2 O 3 20 parts of WO 3 5 parts of Li 2 O, 0.2 part of Ce 2 O 3 0.4 part of Rb 2 Preparing raw materials according to the proportion of O, accurately weighing, grinding and crushing the raw materials, and fully mixing to obtain an initial mixture;
s2, preheating a clinker furnace to enable the temperature of the clinker furnace to rise to more than 1350 +/-20 ℃, keeping constant at the temperature, then putting the initial mixture obtained in the step S1 into the clinker furnace for heating and melting, after complete melting, preserving heat for 1-1.5h at the temperature, standing and clarifying to obtain glass clinker;
s3, pouring the glass clinker obtained in the step into a glass forming die, and annealing the glass clinker by an annealing furnace, wherein the specific method of the annealing treatment comprises the following steps: controlling the initial temperature of an annealing furnace to be 480 +/-5 ℃, firstly preserving the heat for 2 hours at the temperature of 480 +/-5 ℃ during annealing treatment, then cooling from 480 +/-5 ℃ to 280 +/-5 ℃ at the cooling rate of 1 ℃/h, then continuously cooling from 280 +/-5 ℃ to room temperature at the cooling rate of 2 ℃/h to finish the annealing treatment, forming the rare earth-doped glass blank with excellent optical performance, and obtaining the rare earth-doped glass blank with excellent optical performance after treatment.
And S4, processing the glass blank to obtain a glass sample doped with rare earth and having excellent optical performance, wherein the glass sample is processed from the glass blank in the S3 by grinding and polishing the glass sample to be a glass sheet with the thickness of 1mm and then cutting the glass sheet to be a glass sheet sample with the thickness of 1 x 2cm.
The sample was taken for use.
Example 5
In this example, the rare earth-doped glass having excellent optical properties was prepared as follows:
s1, 70 parts of SiO by mol 2 20 parts of Cr 2 O 3 15 parts of CaCO 3 60 parts of Al 2 O 3 15 parts of B 2 O 3 22 parts of WO 3 5 parts of Li 2 O, 0.3 part of Ce 2 O 3 0.4 part of Rb 2 Preparing raw materials according to the proportion of O, accurately weighing, grinding and crushing the raw materials, and fully mixing to obtain an initial mixture;
s2, preheating a clinker furnace to raise the temperature of the clinker furnace to be more than 1350 +/-20 ℃, keeping the temperature constant, then putting the initial mixture obtained in the step S1 into the clinker furnace for heating and melting, and after the initial mixture is completely melted, preserving the heat at the temperature for 1-1.5h, standing and clarifying to obtain glass clinker;
s3, pouring the glass clinker obtained in the step into a glass forming die, and annealing the glass clinker by an annealing furnace, wherein the specific method of the annealing treatment comprises the following steps: controlling the initial temperature of an annealing furnace to be 480 +/-5 ℃, preserving the heat for 2 hours at the temperature of 480 +/-5 ℃ during annealing treatment, then cooling from 480 +/-5 ℃ to 280 +/-5 ℃ at the cooling rate of 1 ℃/h, then continuously cooling from 280 +/-5 ℃ to room temperature at the cooling rate of 2 ℃/h to finish the annealing treatment, forming the rare earth-doped glass blank with excellent optical performance, and obtaining the rare earth-doped glass blank with excellent optical performance after treatment.
And S4, processing the glass blank to obtain a glass sample doped with rare earth and having excellent optical performance, wherein the glass sample is processed from the glass blank in the S3 by grinding and polishing the glass sample to be a glass sheet with the thickness of 1mm and then cutting the glass sheet to be a glass sheet sample with the thickness of 1 x 2cm.
The sample was taken for use.
In conjunction with the above examples, the optical properties of the glass samples prepared in examples 1 to 5 were respectively measured using a spectrophotometer, and the results are shown in fig. 1.
As can be seen from FIG. 1, the glass doped with rare earth and having excellent optical properties prepared by the invention can effectively absorb ultraviolet light wave band of 300-400 nm, blue-green light wave band of 490-525 nm and yellow light wave band of 560-605 nm, and has the anti-dazzle effect.
Therefore, the rare earth doped glass can be applied to glasses, LED lamps, mobile phone screens, display screens and stage lighting lamps, and has the functions of protecting eyes and improving the comfort of human eyes on one hand and improving the color saturation and the image definition on the other hand; in addition, the rare earth doped glass can also be used on cameras, video cameras and telescopes, and can be used as a lens and an optical filter to play roles of ultraviolet ray isolation and anti-dazzle on one hand and improve the color saturation and definition of images on the other hand.
The foregoing shows and describes the general principles and features of the present invention, together with the advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. Glass doped with rare earth and having excellent optical properties, characterized by comprising the following components in molar composition: 50-70 parts of SiO 2 10-20 parts of Cr 2 O 3 、8-15 parts of CaCO 3 30-60 parts of Al 2 O 3 10-15 parts of B 2 O 3 15-22 parts of WO 3 3-5 parts of Li 2 O, 0.1-0.3 part of Ce 2 O 3 0.1-0.4 parts of Rb 2 O。
2. The rare earth doped glass having excellent optical properties as claimed in claim 1, wherein: the glass doped with rare earth and having excellent optical performance comprises the following components in molar composition: 55-64 parts of SiO 2 12-17 parts of Cr 2 O 3 8-12 parts of CaCO 3 35-45 parts of Al 2 O 3 12-14 parts of B 2 O 3 17-20 parts of WO 3 3-5 parts of Li 2 O, 0.1-0.2 part of Ce 2 O 3 0.2-0.4 parts of Rb 2 O。
3. The rare earth doped glass having excellent optical properties as claimed in claim 1, wherein: the glass doped with rare earth and having excellent optical performance comprises the following components in molar composition: 59 parts of SiO 2 15 parts of Cr 2 O 3 10 parts of CaCO 3 38 parts of Al 2 O 3 13 parts of B 2 O 3 19 parts of WO 3 4 parts of Li 2 O, 0.1 part of Ce 2 O 3 0.4 part of Rb 2 O。
4. A method for preparing a rare earth-doped glass having excellent optical properties according to any one of claims 1 to 3, comprising the steps of:
s1, preparing raw materials according to a ratio, accurately weighing, grinding and crushing the raw materials, and fully mixing to obtain an initial mixture;
s2, preheating a clinker furnace to raise the temperature of the clinker furnace to be more than 1350 +/-20 ℃, keeping the temperature constant, then putting the initial mixture obtained in the step S1 into the clinker furnace for heating and melting, and after the initial mixture is completely melted, preserving the heat at the temperature for 1-1.5h, standing and clarifying to obtain glass clinker;
and S3, pouring the glass clinker obtained in the step into a glass forming die, and annealing by an annealing furnace to obtain the rare earth-doped glass blank with excellent optical performance.
And S4, processing the glass blank to obtain a glass sample doped with rare earth and having excellent optical performance.
5. The rare earth-doped glass having excellent optical properties and the method for preparing the same according to claim 4, wherein: in the S1, the grinding equipment adopted for grinding the raw materials is a ball mill, the rotating speed of a cylinder body of the ball mill is 36-38r/min, and the discharging granularity is controlled to be 0.1-0.3mm after the ball milling is finished.
6. The rare earth-doped glass having excellent optical properties and the method for preparing the same according to claim 4, wherein: in S3, the specific method of annealing treatment is as follows: controlling the initial temperature of an annealing furnace to be 480 +/-5 ℃, firstly preserving the heat for 2 hours at the temperature of 480 +/-5 ℃ during annealing treatment, then cooling from 480 +/-5 ℃ to 280 +/-5 ℃ at the cooling rate of 1 ℃/h, and then continuously cooling from 280 +/-5 ℃ to room temperature at the cooling rate of 2 ℃/h to finish the annealing treatment, thus forming the rare earth-doped glass blank with excellent optical performance.
7. The rare earth doped glass having excellent optical properties and the method for preparing the same as claimed in claim 4, wherein: the method for processing the glass blank into the glass sample in the S3 comprises the steps of grinding and polishing the glass blank into a glass sheet with the thickness of 0.8-1mm, and then cutting the glass sheet into glass sheet samples with the thickness of 1 x 2cm.
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| CN106630619A (en) * | 2016-08-30 | 2017-05-10 | 无锡上工搪化工设备有限公司 | Environment-friendly ceramic glaze for glass lining |
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