CN112028478B - Silicate-series anti-dazzle neodymium glass and preparation method thereof - Google Patents
Silicate-series anti-dazzle neodymium glass and preparation method thereof Download PDFInfo
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- CN112028478B CN112028478B CN202010771558.5A CN202010771558A CN112028478B CN 112028478 B CN112028478 B CN 112028478B CN 202010771558 A CN202010771558 A CN 202010771558A CN 112028478 B CN112028478 B CN 112028478B
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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
- C03C3/102—Glass compositions containing silica with 40% to 90% silica, by weight containing lead
- C03C3/108—Glass compositions containing silica with 40% to 90% silica, by weight containing lead containing boron
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B25/00—Annealing glass products
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
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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
- C03C4/00—Compositions for glass with special properties
- C03C4/08—Compositions for glass with special properties for glass selectively absorbing radiation of specified wave lengths
- C03C4/087—Compositions for glass with special properties for glass selectively absorbing radiation of specified wave lengths for X-rays absorbing glass
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Abstract
The invention discloses silicate system anti-dazzle neodymium glass, which comprises silicate system main material and praseodymium-neodymium, wherein the mass ratio of the praseodymium-neodymium to the main material is set to be 0.1-0.5: 100. The silicate-based main material comprises the following components: SiO 2 2 ；Na 2 O；K 2 O；B 2 O 3 ；ZnO；PbO；Sb 2 O 3 . The silicate anti-dazzle neodymium glass has the function of absorbing spectra in different regions, reduces the transmittance of blue light, absorbs yellow light and orange light, and has the advantages of good chemical stability, easy optical processability and low cost.
Description
Technical Field
The invention relates to the field of optical glass, in particular to silicate-series anti-dazzle neodymium glass and a preparation method thereof.
Background
In the current days when the eye health problem of teenagers becomes more serious, the eye health of the teenagers is more and more emphasized in families and society, and besides the glasses, lamps and lanterns and the like have eye protection requirements in different degrees. However, in the existing eye-protection lamps and glasses, a layer of blue light prevention film is plated on the outer layer of the eye-protection lamps and glasses and is used for preventing blue light, but the blue light prevention effect is not clear, and beneficial blue light and harmful blue light are not distinguished. Harmful blue light has extremely high energy, can penetrate crystals to directly reach the retina, causes atrophy and even death of retinal pigment epithelial cells, and has irreversible damage; the beneficial blue light can regulate biological rhythm and is relevant to sleep, emotion and memory. In addition, in the spectrum of light absorbed by the eye, yellow and orange light, in addition to the blue light, can cause damage to the eye, primarily in the case of intense yellow and orange light, which can cause dizziness and glaucoma. Therefore, the glass for eye protection products has the function of absorbing spectra in different regions from the requirement of eye protection, but the common glass cannot absorb the spectra in different regions. The existing rare phosphoric acid system neodymium glass has specific spectral characteristics, namely has the function of a certain interval absorption spectrum, but the glass has poor stability due to easy water absorption, large stress change and large expansion coefficient, is usually used for military industry, is suitable for a laser system, has very high cost, and is not suitable for common civil use or eye protection products in terms of stability or cost.
Disclosure of Invention
In view of the above defects of the prior art, the technical problem to be solved by the present invention is that the common glass cannot realize the interval absorption spectrum, and the dilute phosphate neodymium glass with the interval absorption spectrum function has the problems of extremely high cost, good water absorption, poor stability, etc., and is not suitable for the eye protection product. Therefore, the silicate anti-glare neodymium glass provided by the invention has the function of absorbing spectrum in different regions, reduces the transmittance of blue light, absorbs yellow light and orange light, and has the advantages of low water absorption rate, small stress change, small expansion coefficient, good chemical stability, low cost and the like.
In order to achieve the purpose, the invention provides anti-dazzle neodymium glass of a silicate system, which comprises a main material of the silicate system and praseodymium-neodymium, wherein the mass ratio of the praseodymium-neodymium to the main material is set to be 0.1-0.5: 100.
Further, the silicate-based main material comprises the following components: SiO 2 2 ；Na 2 O；K 2 O；B 2 O 3 ；ZnO；PbO；Sb 2 O 3 。
Further, the silicate-based main material comprises the following components in percentage by mol:
further, SiO 2 And K 2 The proportion of the mole percentage of O is 3.80-7.13.
Further, SiO 2 And K 2 The ratio of the mole percent of O was 5.34.
Further, the refractive index nd of the silicate-based neodymium glass is 1.52 to 1.57.
Further, the refractive index nd of the silicate-based neodymium glass was 1.537.
Further, the silicate-based neodymium glass has a transmittance of 60 to 91% for 380 to 500nm light, a transmittance of 29.2 to 37.6% for 524 to 534nm light, and a transmittance of 0.6 to 7% for 570 to 594nm light.
Further, K 2 O is mainly derived from KNO 3 And K 2 CO 3 ,KNO 3 And K 2 CO 3 The ratio of (A) to (B) is set to 1.05-1.17.
Another embodiment of the present invention provides a method for preparing silicate-based anti-glare neodymium glass, comprising the following steps:
setting the measurement of each raw material in a measurement system, weighing each raw material according to the requirement, and then putting each raw material into an automatic mixer;
mixing the raw materials by an automatic mixer, controlling the automatic mixer to rotate by adopting a variable frequency at a rotating speed of 0-60 rpm for 60 minutes, and completely mixing the raw materials;
putting the mixed materials into a gas-electric furnace at the temperature of 1400 +/-30 ℃ in a thin-layer feeding mode, and stirring after all the mixed materials are put into the gas-electric furnace;
after stirring, pouring the glass liquid which is stirred and cooled to 1100-1150 ℃ into a high-temperature-resistant mold for casting;
after pouring, the mixture is put into an annealing furnace to be cooled to 520 +/-3 ℃ and is kept warm for 48 hours, and then the temperature is reduced to the normal temperature at the speed of reducing the temperature by 3 ℃ per hour.
Technical effects
1. The existing dilute phosphate system is changed into a silicate system, so that the plasma exchange is easier to realize, the water absorption of the system is weakened, the stress change is small, the expansion coefficient is reduced, and the stability is enhanced;
2. the neodymium glass has the function of interval absorption spectrum, the visible blue light transmittance is about 80%, the harmful blue light transmittance (415nm-455nm) is about 75%, and the beneficial blue light transmittance (455nm-480nm) is about 85%; the visible yellow light transmittance is about 30 percent, and the orange light transmittance is about 0.6 percent;
3. the production cost and the production difficulty are reduced, the batch production can be realized, and the glass with different thicknesses can be produced according to the requirements, so that the application range of the glass is wider.
The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, the features and the effects of the present invention.
Drawings
FIG. 1 is a diagram of spectral transmittance according to a preferred embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example one
The embodiment provides anti-dazzle neodymium glass of a silicate system, which comprises a main material of the silicate system and praseodymium-neodymium, wherein the mass ratio of the praseodymium-neodymium to the main material is set to be 0.1-0.5: 100. The praseodymium-neodymium is used as a colorant, a metal oxide and a functional auxiliary material, so that the glass can absorb visible light in different regions, the glass has the effects of preventing dizziness and effectively blocking orange light and yellow light, and the glaucoma can be effectively dealt with. The main material of the silicate system and the praseodymium-neodymium can avoid the crystallization phenomenon in the glass manufacturing process, and enhance the stability of the glass.
The silicate-based anti-glare neodymium glass of the embodiment adopts silicate-based main materials, and the silicate-based main materials comprise: SiO 2 2 ；Na 2 O；K 2 O；B 2 O 3 ；ZnO；PbO；Sb 2 O 3 . Calculated by mol percentage, comprises the following components:
S i O 2 as a glass body, S i O 2 Has a high melting point of S i O 2 When the content of (A) is too high, the melting point is high, so that the temperature requirement in the preparation process is high, the production cost is increased, and K 2 O is mainly derived from KNO 3 And K 2 CO 3 Adding KNO into the main material 3 And K 2 CO 3 As a combustion-supporting substance, lowering the melting point of the main material, but KNO 3 And K 2 CO 3 When the amount of (B) is too large, the melting point of the main material is too low, which affects the chemical stability of the glass, and thus, KNO 3 And K 2 CO 3 Is set to 1.05-1.17, S i O 2 And K 2 The mass ratio of O is 3.80 to 7.13, preferably 5.34.
The composition and experimental data of a silicate-based anti-glare neodymium glass according to the present invention will be described below by way of specific examples.
Table 1 composition and experimental data of a silicate-based anti-glare neodymium glass according to an embodiment of the present invention
In the above embodiment, D A For acid resistance, D W The lower the rating for water resistance, acid resistance and water resistance, the higher the chemical stability of the glass. The thickness of the finished glass product in the embodiment is 2cm +/-0.5, the refractive index nd is 1.52-1.57, and preferably nd is 1.537; the color of the finished glass is partial purple, and the color depth of the finished glass is related to the metering of the added praseodymium-neodymium.
As shown in fig. 1, the portion on the outer side of the curve (upward) is a portion where light is intercepted, and the portion on the inner side of the curve (downward) is a portion where light is transmitted. In example 3 of the present invention, the transmittance for 380nm to 500nm light is 60 to 91% (wherein the transmittance for harmful blue light (415nm to 455nm) is about 75%, and the transmittance for useful blue light (455nm to 480nm) is about 85%), the transmittance for 524nm to 534nm light is 29.2 to 37.6%, and the transmittance for 570nm to 594nm light is 0.6 to 7%.
As shown in fig. 1, in the visible light range (380nm-760nm), the transmittance of the glass of the embodiment of the present invention is divided, and especially, when light with the wavelength ranges of 524 nm-534 nm and 570 nm-594 nm stimulates human eyes and is easy to vertigo (for example, when driving at night), after the glass of the embodiment of the present invention obstructs most or all of the light with the wavelength ranges, the damage of vertigo caused by the light with the wavelength ranges to the human eyes can be prevented.
Example two
The embodiment provides a preparation method of silicate-based anti-glare neodymium glass in the first embodiment, which includes the following steps:
step 1, setting the metering of each raw material in a metering system, weighing each raw material according to requirements, and then putting each raw material into an automatic mixer;
step 2, mixing all the raw materials completely by an automatic mixer, controlling the automatic mixer to rotate by adopting a variable frequency at a rotating speed of 0-60 rpm for 60 minutes, and completely mixing the raw materials;
step 3, putting the mixed materials into a gas-electric furnace with the temperature of 1400 +/-30 ℃ in a thin-layer feeding mode, and stirring after all the mixed materials are put into the gas-electric furnace;
step 4, after stirring, pouring the glass liquid which is stirred and cooled to 1100-1150 ℃ into a high-temperature-resistant mold for casting;
and 5, after pouring, placing the cast material into an annealing furnace to cool to 520 +/-3 ℃, preserving heat for 48 hours, and cooling to the normal temperature at a speed of reducing the temperature by 3 ℃ per hour.
When the amount of the glass liquid to be prepared is too large, the raw materials need to be trisected or quartered, and each part of the raw materials is put into an automatic mixer to be completely mixed. When the automatic mixer is used for mixing, the automatic mixer rotates in a mode of firstly slow, then fast and then slow, and the rotating speed is controlled to be 0-60 rpm so as to ensure that the mixed materials are uniform.
After the raw materials are completely mixed, the raw materials are sequentially fed into a gas electric furnace in a thin layer feeding mode for waiting for heating. The thin layer feeding mode is characterized in that a small amount of materials are fed in a mode of slowing down the speed for multiple times, the traditional one-hour feeding mode is changed into one-hour feeding mode for 4-5 times, when the fed mixed raw materials are laid on a thin layer in a gas-electric furnace and then stand still, and then are poured in, raw materials need to be prevented from being accumulated in the process, the thin layer feeding mode can reduce unnecessary loss of the raw materials (such as excessive reaction of the raw materials at high temperature and the like), and the thin layer feeding mode is a crucial step for preparing glass with stable performance.
The gas-electric furnace needs to be heated to 1550 +/-30 ℃ in advance, the compactness of the gas-electric furnace can be enhanced by heating in advance, the temperature is reduced to 1440 +/-30 ℃ before the mixed raw materials are put into use, the gas-electric furnace uses natural gas, the required temperature can be reached, and the gas-electric furnace is more environment-friendly.
The stirring process needs to be continued for 16-18 hours, sampling is carried out three times at different positions of the glass liquid level in the stirring process, and the transmittance, the refractive index and the bubbles of the glass liquid are detected to check whether an abnormal condition occurs in the stirring process. In the stirring process, the stirring paddle rotates and stirs in a mode of first being shallow, then being deep, and then being shallow and then being deep so as to ensure that bubbles in the glass liquid are discharged and the stirring is uniform. The stirring paddle used in the stirring process is extruded and formed by a self-made mould, and agate is required to polish the lens, so that the stirring paddle is compact, free of impurities, air holes and fine cracks, and the container and the stirring paddle are ensured not to generate texture, bubbles, stones and impurity inclusions on the glass liquid.
And (4) after the mixture is poured into a mold, the mixture is formed after annealing, heat preservation and cooling, and then the product detection stage is carried out.
The glass prepared by the preparation method of silicate anti-glare neodymium glass provided by the embodiment of the invention has stable performance, small stress change and small expansion coefficient, is not easy to absorb water, is superior to the performance of the existing neodymium glass, has low manufacturing cost, and can be used for civil use, especially for eye protection products.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (2)
1. The silicate system anti-dazzle neodymium glass is characterized by comprising a main material of a silicate system and praseodymium-neodymium, wherein the mass ratio of the praseodymium-neodymium to the main material is set to be 0.1-0.5: 100;
the silicate-series main material comprises the following components: SiO 2 2 ；Na 2 O；K 2 O；B 2 O 3 ；ZnO；PbO；Sb 2 O 3 ；
The silicate series main materials comprise the following components in percentage by mol:
SiO 2 and K 2 The proportion of the mole percentage of O is 3.80-7.13;
the refractive index of the silicate-based neodymium glass is 1.52-1.57;
the silicate neodymium glass has the transmittance of 60-91% for 380-500 nm light, the transmittance of 29.2-37.6% for 524-534 nm light and the transmittance of 0.6-7% for 570-594 nm light;
K 2 the source of O is mainly from KNO 3 And K 2 CO 3 ,KNO 3 And K 2 CO 3 The molar percentage of (c) is set to 1.05-1.17.
2. The method for preparing silicate-based anti-glare neodymium glass according to claim 1, wherein the method comprises the following steps:
setting the measurement of each raw material in a measurement system, weighing each raw material according to the requirement, and then putting each raw material into an automatic mixer;
mixing the raw materials completely by an automatic mixer, controlling the automatic mixer to rotate by adopting a variable frequency at a rotating speed of 0-60 rpm for 60 minutes, and completely mixing the raw materials;
putting the mixed materials into a gas-electric furnace at the temperature of 1400 +/-30 ℃ in a thin-layer feeding mode, and stirring after all the mixed materials are put into the gas-electric furnace;
after stirring, pouring the glass liquid which is stirred and cooled to 1100-1150 ℃ into a high-temperature-resistant mold for casting;
after pouring, the mixture is put into an annealing furnace to be cooled to 520 +/-3 ℃ and is kept warm for 48 hours, and then the temperature is reduced to the normal temperature at the speed of reducing the temperature by 3 ℃ per hour.
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| US4454446A (en) * | 1980-05-29 | 1984-06-12 | Mitsubishi Denki Kabushiki Kaisha | Cathode ray tube for a light source |
| CN1239936A (en) * | 1997-01-02 | 1999-12-29 | 康宁股份有限公司 | Transparent oxyfluoride glass-ceramic composition and process for making the same |
| CN1308591A (en) * | 1998-07-06 | 2001-08-15 | 康宁股份有限公司 | Tantalum containing glasses and glass ceramics |
| CN1425621A (en) * | 2002-12-03 | 2003-06-25 | 长岛县光学材料研究所 | Glasses lens glass for preventing radiation, ultra violet and vision fatigue |
| CN1653007A (en) * | 2002-05-16 | 2005-08-10 | 肖特股份有限公司 | UV-blocking borosilicate glass, the use of the same, and a fluorescent lamp |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4454446A (en) * | 1980-05-29 | 1984-06-12 | Mitsubishi Denki Kabushiki Kaisha | Cathode ray tube for a light source |
| CN1239936A (en) * | 1997-01-02 | 1999-12-29 | 康宁股份有限公司 | Transparent oxyfluoride glass-ceramic composition and process for making the same |
| CN1308591A (en) * | 1998-07-06 | 2001-08-15 | 康宁股份有限公司 | Tantalum containing glasses and glass ceramics |
| CN1653007A (en) * | 2002-05-16 | 2005-08-10 | 肖特股份有限公司 | UV-blocking borosilicate glass, the use of the same, and a fluorescent lamp |
| CN1425621A (en) * | 2002-12-03 | 2003-06-25 | 长岛县光学材料研究所 | Glasses lens glass for preventing radiation, ultra violet and vision fatigue |
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