Black platinum group silicate glass capable of transmitting medium-wave ultraviolet rays and application of black platinum group silicate glass

Abstract

The invention provides black medium-wave ultraviolet-transmitting platinum group silicate glass which comprises the following components in percentage by mass: 65%-75% of SiO2, 1%-8% of B2O3, 1%-10% of BaO, 2%-10% of CaO, 1%-5% of ZnO, 5%-13% of Na2O, 1%-15% of K2O, 0.1%-1% of TiO2, 0.1%-5% of NiO and 0.1%-2% of CoO. When the thickness of the glass provided by the invention is 1mm, the transmittance of 300nm is 20-60%, the expansion coefficient at 20-200 DEG C is 80 * 10 <-7 >-99 * 10 <-7 >, and the glass provided by the invention can transmit medium-wave ultraviolet rays and does not transmit visible light; the surface of the medium-wave ultraviolet lamp is free of air lines, the medium-wave ultraviolet lamp can be well sealed with Dumet wires or other platinum group glass in a fusion mode, and the medium-wave ultraviolet lamp is high in energy efficiency, good in sealing performance, long in service life and suitable for pets walking at night.

Description

Technical Field

[0001] The invention relates to the technical field of materials, and in particular to a black platinum group silicate glass transparent to medium-wave ultraviolet rays and an application thereof. Background Art

[0002] Ultraviolet B (UVB) is part of the electromagnetic spectrum, with a wavelength range of 280nm~320nm. UVB has high energy, which is absorbed by the skin epidermis and cannot penetrate into the skin. It can promote mineral metabolism and vitamin D formation in humans and animals, enhance calcium absorption, and promote animal growth. However, for special application environments of silicate glass, it is necessary to transmit ultraviolet B but not visible light. For example, some nocturnal animals and plants do not want to transmit visible light while supplementing ultraviolet B.

[0003] Therefore, in order to broaden the application field of silicate glass, it is of great significance to provide a glass that can transmit medium-wave ultraviolet rays but not visible light. Summary of the invention

[0004] The technical problem solved by the present invention is to provide a black platinum group silicate glass that is transparent to medium-wave ultraviolet rays. The glass provided by the present application is transparent to medium-wave ultraviolet rays but not to visible light. Furthermore, there is no air line on the surface of the glass, and it can be well sealed with Dumet wire or other platinum group glasses. The medium-wave ultraviolet lamp prepared has the advantages of high energy efficiency, good sealing and long service life.

[0005] In view of this, the present application provides a black platinum group silicate glass that is transparent to medium-wave ultraviolet light, which comprises, by mass percentage:

[0006] SiO2 65%~75%,

[0007] B2O3 1%~8%,

[0008] BaO 1%~10%,

[0009] CaO 2%~10%,

[0010] ZnO 1%~5%,

[0011] Na2O 5%~13%,

[0012] K2O 1%~15%,

[0013] TiO2 0.1%~1%,

[0014] NiO 0.1%~5%,

[0015] CoO 0.1%~2%.

[0016] Preferably, the content of SiO2 is 65%~71%, and the content of B2O3 is 1%~7%.

[0017] Preferably, the content of BaO is 1% to 9%.

[0018] Preferably, the CaO content is 2% to 8%.

[0019] Preferably, the content of ZnO is 2% to 5%.

[0020] Preferably, the content of Na2O is 5% to 10%, and the content of K2O is 2% to 15%.

[0021] Preferably, the content of TiO2 is 0.1%~0.8%.

[0022] Preferably, the content of NiO+CoO is 0.2%~5%.

[0023] The present application also provides a UVB lamp, comprising the black platinum group silicate glass transparent to medium-wave ultraviolet rays.

[0024] The present application also provides a device, comprising a glass component, wherein the glass in the glass component is the black platinum group silicate glass that is transparent to medium-wave ultraviolet rays.

[0025] The present application provides a black medium-wave ultraviolet transparent platinum group silicate glass, which comprises, by mass percentage: SiO2 65%~75%, B2O3 1%~8%, BaO 1%~10%, CaO 2%~10%, ZnO 1%~5%, Na2O 5%~13%, K2O 1%~15%, TiO2 0.1%~1%, NiO 0.1%~5%, and CoO 0.1%~2%; in the black medium-wave ultraviolet transparent platinum group silicate glass provided by the present application, SiO2 serves as the main body of the silicate glass, and constitutes the skeleton of the glass in the form of a network of silicon oxygen tetrahedrons, B2O3 can help to melt and reduce the viscosity of the glass, and accelerate clarification, BaO fills the network gaps of the glass, blocks the ion migration channel, and improves the resistivity of the glass, CaO and other alkaline earth metal oxides can be combined to reduce the viscosity of the glass, promote melting, and improve the chemical stability of the glass, ZnO can significantly improve the chemical stability of the glass, and TiO2 can shield short-wave ultraviolet rays and adjust the medium-wave ultraviolet peak value, NiO and CoO are used to shield visible light; therefore, the black platinum group silicate glass transparent to medium-wave ultraviolet rays provided by the present application is added with the above components and the content is adjusted so that it can transmit medium-wave ultraviolet rays but not visible light; and the glass surface has no air lines, and can be well sealed with Dumet wire or other platinum group glasses, and the prepared medium-wave ultraviolet lamp (UVB lamp) has high energy efficiency, good sealing and long service life; after testing, the glass provided by the present application has a black appearance, and when the thickness is 1mm, the transmittance of 300nm medium-wave ultraviolet rays is 20%~60%, the transmittance of 280nm is <15%, and it does not transmit visible light. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a transmittance curve diagram of the glass with a thickness of 1.10 mm produced by the present invention at different wavelengths. DETAILED DESCRIPTION

[0027] In order to further understand the present invention, preferred embodiments of the present invention are described below in conjunction with examples. However, it should be understood that these descriptions are only for further illustrating the features and advantages of the present invention, rather than limiting the claims of the present invention.

[0028] In view of the performance requirements of glass that is transparent to medium-wave ultraviolet rays but not transparent to visible light in the prior art, the present application provides a black platinum group silicate glass that is transparent to medium-wave ultraviolet rays. By adding SiO2, B2O3, BaO, CaO, ZnO, Na2O, K2O, TiO2, NiO and CoO, and adjusting the content of the above components, the obtained glass can be transparent to medium-wave ultraviolet rays but not transparent to visible light. Furthermore, there is no air line on the surface of the glass, and it can be well sealed with Dumet wire or other platinum group glasses. The medium-wave ultraviolet lamp produced has the advantages of high energy efficiency, good sealing and long service life. Experimental results show that when the glass provided by the present application has a thickness of 1.0mm, the transmittance at 300nm is 20%~60%; the expansion coefficient at 20℃~200℃ is 80*10 -7 Up to 99*10 -7 Specifically, the present application provides a black platinum group silicate glass that is transparent to medium-wave ultraviolet light, which comprises, by mass percentage:

[0029] SiO2 65%~75%,

[0030] B2O3 1%~8%,

[0031] BaO 1%~10%,

[0032] CaO 2%~10%,

[0033] ZnO 1%~5%,

[0034] Na2O 5%~13%,

[0035] K2O 1%~15%,

[0036] TiO2 0.1%~1%,

[0037] NiO 0.1%~5%,

[0038] CoO 0.1%~2%.

[0039] In the black medium wave ultraviolet transparent platinum group silicate glass provided in the present application, the content of SiO2 is 65%-75%. Preferably, the content of SiO2 is 65%-71%. By way of example, the content of SiO2 in the present application is 65.2%, 65.8%, 66.0%, 66.5%, 66.9%, 67.1%, 67.5%, 67.8%, 68.0%, 68.3%, 68.5%, 68.8%, 68.9%, 69.2%, 69.4%, 69.9%, 70.2%, 70.6%, 70.9%, 71.1%, 71.3%, 71.6%, 72.1%, 72.4%, 72.6%, 72.9%, 73.1%, 73.6%, 73.8%, 74.2%, 74.6% or 74.8%, and it can also be other values ​​within the range. SiO2 is the main body of silicate glass, forming the skeleton of glass in the form of a network of silicon-oxygen tetrahedrons. If the content of SiO2 exceeds 75%, the glass is difficult to melt, and the melting temperature and melting time need to be increased, resulting in excessive energy consumption and reduced production efficiency. At the same time, the annealing temperature and softening temperature of the glass are increased, and the expansion coefficient is reduced; too little SiO2 makes the chemical stability of the glass poor.

[0040] The content of B2O3 is 1% to 8%, preferably, the content of B2O3 is 1% to 7%; for example, the content of B2O3 in this application is 1.3%, 1.6%, 1.8%, 2.1%, 2.3%, 2.4%, 2.6%, 2.8%, 3.2%, 3.7%, 3.8%, 3.9%, 4.0%, 4.3%, 4.5%, 4.7%, 4.9%, 5.0%, 5.2%, 5.6%, 5.7%, 6.0%, 6.3%, 6.7%, 6.9%, 7.0%, 7.2%, 7.6%, 7.7%, 7.8%, or other values ​​within the range. B2O3 fluxing reduces the viscosity of the glass and accelerates the clarification process; too little B2O3 content has no effect, and too much B2O3 reduces the chemical stability of the glass.

[0041] The content of BaO is 1% to 10%, preferably, the content of BaO is 1% to 9%; for example, the content of BaO in this application is 1.2%, 1.5%, 1.9%, 2.1%, 2.5%, 2.7%, 3.3%, 3.6%, 3.8%, 3.9%, 4.1%, 4.4%, 4.8%, 5.1%, 5.3%, 5.5%, 5.8%, 6.1%, 6.2%, 6.3%, 6.6%, 6.8%, 7.1%, 7.2%, 7.4%, 7.5%, 7.9%, 8.0%, 8.3%, 8.5%, 8.7%, 8.8%, 9.1%, 9.3%, 9.5%, 9.8%, or other values ​​within the range. BaO fills the network gap of glass, blocks the ion migration channel, increases the resistivity of glass, and also has a fluxing effect to promote glass melting; too little BaO content does not work, and too much BaO makes the glass easy to lose transparency.

[0042] The black medium wave ultraviolet transparent glass of the present invention contains CaO, and the content of CaO is 2%-10%. Preferably, the content of CaO is 2%-8%. For example, the content of CaO in the present application is 2.1%, 2.3%, 2.5%, 2.8%, 3.1%, 3.4%, 3.7%, 3.9%, 4.0%, 4.1%, 4.3%, 4.6%, 4.9%, 5.0%, 5.2%, 5.4%, 5.5%, 5.9%, 6.0%, 6.2%, 6.3%, 6.6%, 6.9%, 7.0%, 7.1%, 7.3%, 7.4%, 7.6%, 7.8%, 7.9%, 8.2%, 8.4%, 8.5%, 8.6%, 8.9%, 9.2%, 9.4%, 9.6%, 9.9%, and it can also be other values ​​within the range. In the present application, the combination of CaO and other alkaline earth metal oxides can reduce the viscosity of the glass, promote melting, and also improve the chemical stability of the glass; too little CaO content will have no effect, while too much CaO content will cause phase separation of the glass.

[0043] The content of ZnO is 1% to 5%, preferably, the content of ZnO is 2% to 5%; for example, the content of ZnO in this application is 1.2%, 1.6%, 1.7%, 1.8%, 2.1%, 2.3%, 2.5%, 2.6%, 2.8%, 3.0%, 3.2%, 3.4%, 3.6%, 3.9%, 4.0%, 4.1%, 4.4%, 4.7%, 4.8%, 4.9%, or other values ​​within the range. ZnO can significantly improve the chemical stability of glass, and can reduce the viscosity of glass and promote melting and clarification when combined with other alkaline earth metal oxides; too little ZnO content will not work, and too much will cause phase separation, devitrification, and opacification of glass.

[0044] The black medium-wave ultraviolet transparent platinum group silicate glass of the present invention includes Na2O and K2O, wherein the content of Na2O is 5%-13%, preferably, the content of Na2O is 5%-10%; for example, the content of Na2O in the present application is 5.2%, 5.4%, 5.7%, 5.9%, 6.2%, 6.5%, 6.6%, 6.8%, 6.9%, 7.1%, 7.2%, 7.3%, 7.7%, 7.9%, 8.2%, 8.6%, 8.9%, 9.0%, 9.3%, 9.4%, 9.8%, 9.6%, 10.0%, 10.2%, 10.4%, 10.3%, 10.6%, 10.9%, 11.1%, 11.3%, 11.6%, 11.8%, 12.0%, 12.3%, 12.5%, 12.8%, and may be other values ​​within the range. The content of K2O is 1% to 15%, preferably, the content of K2O is 2% to 15%; for example, the content of K2O in the present application is 1.3%, 1.4%, 1.7%, 1.9%, 2.2%, 2.7%, 2.8%, 3.1%, 3.5%, 3.7%, 3.9%, 4.0%, 4.1%, 4.3%, 4.6%, 4.8%, 5.1%, 5.3%, 5.6%, 5.9%, 6.1%, 6.4%, 6.7%, 6.9%, 7.0%, 7.2%, 7.3%, 7.7%, 7.9%, 8.3%, 8.6%, 8.8%, 9.0%, 9.1%, 9.3%, 9.4%, 9.8%, 9.6%, 10.1%, 10.2%, 10.5%, 10.6%, 10.9%, 11.0%, 11.3%, 11.7%, 11.6%, 12.0%, 12.3%, 12.5%, 12.8%, 12.9%, 13.1%, 13.3%, 13.6%, 13.8%, 14.0%, 14.5%, 14.8%, or other values ​​within the range. The total content of Na2O+KO is preferably 7% to 25%. Na2O and K2O can significantly reduce the viscosity of glass and promote glass melting. They are good fluxing agents and also determine the expansion coefficient of glass to a large extent. Too little content of the above two components will have no effect and the expansion coefficient will be too low. Too much content will reduce the chemical stability of the glass. The simultaneous introduction of Na2O and K2O has a double alkali effect and can improve the chemical stability of the glass.

[0045] The content of TiO2 is 0.1% to 1%, preferably, the content of TiO2 is 0.1% to 0.8%; for example, the content of TiO2 in this application is 0.2%, 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, 0.9%, or other values ​​within the range. TiO2 has the function of shielding short-wave ultraviolet rays and adjusting the peak value of medium-wave ultraviolet rays.

[0046] The content of NiO is 0.1% to 5%, preferably, the content of NiO is 1 to 4%; for example, the content of NiO in this application is 0.2%, 0.5%, 0.7%, 0.8%, 1.3%, 1.6%, 1.8%, 1.9%, 2.0%, 2.2%, 2.6%, 2.8%, 2.9%, 3.1%, 3.2%, 3.3%, 3.6%, 3.8%, 4.1%, 4.3%, 4.6%, 4.8%, or other values ​​within the range. The content of CoO is 0.1% to 2%; for example, the content of CoO in this application is 0.2%, 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, 0.8%, 0.9%, 1.0%, 1.1%, 1.2%, 1.3%, 1.4%, 1.5%, 1.6%, 1.7%, 1.8%, 1.9%, or other values ​​within the range. Furthermore, the total content of NiO+CoO in the present application is preferably 0.2% to 5%. The introduction of NiO and CoO has the effect of shielding visible light.

[0047] The black medium-wave ultraviolet transparent platinum group silicate glass provided in the present application also contains a clarifier commonly used in the glass industry.

[0048] In the present application, the preparation method of the black medium-wave ultraviolet transparent platinum group silicate glass is carried out according to a method well known to those skilled in the art, and the present application does not impose any particular limitation on this.

[0049] The present application also provides a UVB lamp, which comprises the black platinum silicate glass transparent to medium-wave ultraviolet rays as described in the above scheme. Specifically, the glass can be made into a lamp tube, a bulb or a lamp bead of the UVB lamp.

[0050] The present application also provides a device, which includes a glass component, wherein the glass in the glass component is the black platinum group silicate glass that is transparent to medium-wave ultraviolet light as described in the above scheme; specifically, for a device that needs to transmit UVB light but not visible light, the glass therein can be the above-mentioned black platinum group silicate glass that is transparent to medium-wave ultraviolet light, more specifically a black medium-wave ultraviolet transparent glass tube, a black medium-wave ultraviolet transparent glass shell, a black medium-wave ultraviolet transparent glass sheet or a black medium-wave ultraviolet transparent glass plate.

[0051] In order to further understand the present invention, the black platinum group silicate glass transparent to medium-wave ultraviolet rays provided by the present invention is described in detail below in conjunction with the embodiments, and the protection scope of the present invention is not limited by the following embodiments.

[0052] Example

[0053] Glasses with different specific compositions were prepared according to the components in Table 1, and the properties of the glasses were tested. The results are shown in Table 1.

[0054] Table 1 Data table of glass components in different embodiments

[0055]

[0056] As shown in Table 1, the black medium-wave ultraviolet transparent platinum silicate glass provided by the present application has a transmittance of 20% to 60% at a wavelength of 300 nm when the thickness is 1 mm; the expansion coefficient at 20°C to 200°C is 80*10 -7 ~99*10 -7 .

[0057] A glass with a specific composition is selected from the glasses described in any one of claims 1 to 8 of the present application, and is prepared to have a thickness of 1.10 mm. The transmittance of the glass at different wavelengths is as follows: Figure 1 shown by Figure 1 It can be seen that the transmittance of glass with a thickness of 1.10 mm for ultraviolet light with a wavelength of 300 nm is greater than 40%. This shows that the glass provided in the present application is transparent to medium-wave ultraviolet light but not to visible light.

[0058] The above embodiments are only used to help understand the method and core idea of ​​the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

[0059] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A black platinum group silicate glass transparent to medium-wave ultraviolet light, characterized in that: In terms of mass percentage, it includes: SiO2 65%~75%, B2O3 1%~8%, BaO 1%~10%, CaO 2%~10%, ZnO 1%~5%, Na2O 5%~13%, K2O 1%~15%, TiO2 0.1%~1%, NiO 0.1%~5%, CoO 0.1%~2%.

2. The glass according to claim 1, characterized in that The content of SiO2 is 65%~71%, and the content of B2O3 is 1%~7%.

3. The glass according to claim 1, characterized in that The content of BaO is 1% to 9%.

4. The glass according to claim 1, characterized in that The CaO content is 2% to 8%.

5. The glass according to claim 1, characterized in that The content of ZnO is 2% to 5%.

6. The glass according to claim 1, characterized in that The content of Na2O is 5% to 10%, and the content of K2O is 2% to 15%.

7. The glass according to claim 1, characterized in that The content of TiO2 is 0.1%~0.8%.

8. The glass according to claim 1, characterized in that The content of NiO+CoO is 0.2%~5%.

9. A UVB lamp, comprising the black platinum group silicate glass transparent to medium-wave ultraviolet rays as claimed in any one of claims 1 to 8.

10. A device comprising a glass component, wherein the glass in the glass component is the black platinum group silicate glass transparent to medium-wave ultraviolet rays as claimed in any one of claims 1 to 8.

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