Carbon-containing glass, and preparation method therefor and use thereof

Abstract

The present application relates to the technical field of glass production and manufacturing, and specifically relates to carbon-containing glass, and a preparation method therefor and the use thereof. The preparation method for the carbon-containing glass provided by the present application comprises the following steps: mixing a glass raw material with a carbon material at a mass ratio of 1:(0.02-0.1), so as to prepare a mixture; heating the mixture to a melting temperature, so as to prepare a molten liquid; and subjecting the molten liquid to forming, annealing same, and then subjecting same to a crystallization treatment at 650-800°C, so as to prepare the carbon-containing glass.

Description

Carbon-containing glass, and preparation method and application thereof

[0001] Cross-reference to related applications

[0002] The present disclosure is based on and claims priority to Chinese Patent Application No. 202410739616.4, filed on June 7, 2024, entitled “Carbon-containing glass, and preparation method and application thereof”, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0003] The present application relates to the technical field of glass production and manufacturing, in particular to a carbon-containing glass, and a preparation method and application thereof. BACKGROUND

[0004] Glass has been widely used in daily display, electronic display, optical instruments, medical instruments, and photovoltaic components, due to its controllable thermal expansion coefficient, high hardness and mechanical strength, high thermal stability, good chemical stability and electrical insulation, and good transparency.

[0005] To further improve the toughness of glass and reduce the generation of micro-cracks, some researchers have added carbon materials to glass to prepare carbon-containing glass. However, the current carbon-containing glass is a pure glass phase, lacking of crystal phase structure, which leads to its deficiency in hardness, strength and thermal stability compared to crystalline glass, limiting the application range of carbon-containing glass. SUMMARY

[0006] Therefore, the present application provides a carbon-containing glass, and a preparation method and application thereof. The preparation method provided by the present application can realize different degrees of crystallization of the carbon-containing glass, and broaden the use range of the carbon-containing glass.

[0007] In a first aspect, the present application provides a preparation method of a carbon-containing glass, comprising the following steps:

[0008] mixing glass raw materials and carbon materials at a mass ratio of 1:(0.02-0.1) to prepare a mixture;

[0009] heating the mixture to a melting temperature to prepare a molten liquid;

[0010] forming the molten liquid, and after annealing, performing crystallization treatment at 650-800°C to prepare the carbon-containing glass.

[0011] In some embodiments, the carbon material includes one or more of graphite, charcoal, carbon black, activated carbon, carbon nanowires, carbon nanotubes, or graphene.

[0012] In some embodiments, the annealing comprises: annealing at 600-650℃ for 2-5h, then cooling to 150-250℃ at a cooling rate of 0.3-1℃ / min, and then cooling to room temperature.

[0013] In some embodiments, the mixture further comprises a fining agent, and the mass ratio of the glass raw material to the fining agent is 1:(0.002-0.006).

[0014] In some embodiments, the chemical composition of the glass raw material comprises, in mass percentage: SiO2 65-80%, Na2O 10-16%, CaO 5-12%, MgO 0-1%, Al2O3 0-5%, and B2O3 0-4%.

[0015] In some embodiments, the chemical composition of the glass raw material comprises, in mass percentage: SiO2 45-70%, Na2O 5-18%, K2O 0-1%, MgO 0-2%, and Al2O3 20-30%.

[0016] In some embodiments, the chemical composition of the glass raw material comprises, in mass percentage: SiO2 70-80%, Na2O 2-10%, CaO 0-2%, Al2O3 0-5%, and B2O3 5-15%.

[0017] In some embodiments, the melting temperature is 1200-1600℃.

[0018] In some embodiments, the mixing of the glass raw material and the carbon material is performed by ball milling.

[0019] In some embodiments, the particle size of the mixture is 0.005-0.1mm.

[0020] In a second aspect, the present application provides a carbon-containing glass prepared by the method of the first aspect.

[0021] In some embodiments, the chemical composition of the carbon-containing glass comprises, in mass percentage: SiO2 58-79%, Na2O 9-16%, CaO 4.5-12%, MgO 0-1%, Al2O3 0-5%, B2O3 0-3.7%, carbon material 1.8-10%, and fining agent 0.15-0.6%.

[0022] In some embodiments, the chemical composition of the carbon-containing glass comprises, in mass percent, SiO2 40-69%, Na2O 4.5-18%, K2O 0-1%, MgO 0-2%, Al2O3 18-30%, carbon material 1.8-10%, and fining agent 0.15-0.6%.

[0023] In some embodiments, the chemical composition of the carbon-containing glass comprises, in mass percent, SiO2 63-78.5%, Na2O 1.8-10%, CaO 0-2%, Al2O3 0-5%, B2O3 4.5-15%, carbon material 1.8-10%, and fining agent 0.15-0.6%.

[0024] The third aspect of the present application also provides a use of the carbon-containing glass according to the second aspect of the present application in a curtain wall glass, a fireproof glass, a heat-resistant vessel glass, a home decoration glass, a pharmaceutical glass, an automobile glass, a solar heat collecting tube glass, or a cover plate glass for a display device.

[0025] In the preparation method provided by the present application, the glass raw material and the carbon material are sequentially subjected to the steps of mixing, melting, forming, annealing, and crystallization to form the carbon-containing glass. The glass raw material and the carbon material can be fully mixed and melted to form a uniform molten liquid by heating the mixed material to a melting temperature, which helps to ensure that the glass and the carbon material are fully contacted and mixed, and improves the uniformity and stability of the final product, i.e., the carbon-containing glass.

[0026] Further, the annealing step can eliminate the internal stress and defects of the glass after forming, and promote the growth of crystal phases in the subsequent crystallization process. Further, the mass ratio of the glass raw material to the carbon material is limited to 1:(0.02-0.1), and the crystallization treatment is performed at 650-800°C, so that the carbon material can act as a nucleating agent in the glass preparation process, which helps to promote the growth and formation of crystals. The preparation method provided by the present application can realize different degrees of crystallization of the carbon-containing glass, thereby widening the application range of the carbon-containing glass. BRIEF DESCRIPTION OF DRAWINGS

[0027] FIG. 1 is a process flow diagram for preparing a carbon-containing glass using a glass raw material of a soda-lime glass according to the present application;

[0028] FIG. 2 is a process flow diagram for preparing a carbon-containing glass using a glass raw material of an alumino-silicate glass according to the present application;

[0029] FIG. 3 is a process flow diagram for preparing a carbon-containing glass using a glass raw material of a borosilicate glass according to the present application;

[0030] FIG. 4 is an XRD pattern of the carbon-containing glass according to Example 2 of the present application;

[0031] FIG. 5 is an XRD pattern of the carbon-containing glass of Example 3 of the present application; and

[0032] FIG. 6 is an XRD pattern of the carbon-containing glass of Comparative Example 4 of the present application. DETAILED DESCRIPTION

[0033] The carbon-containing glass of the present application, the method for preparing the same and the use thereof will be further described in detail below in connection with specific examples. The present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terminology used in the description of the present application herein only for the purpose of describing specific embodiments and is not intended to be limiting of the present application.

[0035] Herein, "one or more" means any one, any two or more than two of the listed items.

[0036] In the present application, "first aspect", "second aspect", "third aspect", "fourth aspect", "fifth aspect" and the like are only for the purpose of description and cannot be understood as indicating or implying relative importance or quantity, nor can they be understood as implicitly indicating the importance or quantity of the technical features indicated.

[0037] In the present application, in the technical features described in an open-ended manner, both the closed technical solution consisting of the listed features and the open technical solution containing the listed features are included.

[0038] In the present application, when referring to a numerical interval, unless otherwise specified, the numerical interval is considered to be continuous and includes the minimum value and the maximum value of the range and every value between the minimum value and the maximum value. Further, when the range refers to integers, every integer between the minimum value and the maximum value of the range is included. In addition, when multiple ranges are provided to describe a feature or a characteristic, the ranges can be combined. In other words, unless otherwise specified, all ranges disclosed herein should be understood to include any and all sub-ranges subsumed therein.

[0039] In the present application, the percentage content, unless otherwise specified, refers to mass percentage for solid-liquid mixing and solid-solid mixing, and refers to volume percentage for liquid-liquid mixing.

[0040] The percentage concentration referred to in the present application, if not specified, refers to the final concentration. The final concentration refers to the proportion of the added ingredient in the system after the ingredient is added.

[0041] The "room temperature" referred to in the present application refers to a temperature of 15℃ to 30℃.

[0042] Compared with traditional amorphous glass, crystalline glass has higher hardness, strength and thermal stability, while maintaining the transparency of glass, and therefore has received more extensive attention. However, in the field of carbon-containing glass, the current carbon-containing glass is a pure glass phase, lacking a crystal phase structure. The main reason for the difficulty in crystallization is that the high content of carbon material is sensitive to temperature changes, making it difficult for carbon to form an ordered crystal lattice structure in amorphous glass, thereby inhibiting the nucleation and growth of crystals, making the crystallization process difficult.

[0043] Based on this, the first aspect of the present application provides a preparation method of carbon-containing glass, comprising the following steps:

[0044] Mixing the glass raw material and the carbon material at a mass ratio of 1:(0.02-0.1) to prepare a mixture;

[0045] Heating the mixture to a melting temperature to prepare a molten liquid;

[0046] Shaping the molten liquid, and after annealing, performing crystallization treatment at 650℃-800℃ to prepare the carbon-containing glass.

[0047] In the preparation method provided by the present application, the glass raw material and the carbon material are sequentially subjected to the steps of mixing, melting, shaping, annealing and crystallization to form the carbon-containing glass. By heating the mixture to a melting temperature, the glass raw material and the carbon material can be fully melted and mixed to form a uniform molten liquid, which helps to ensure that the glass and the carbon material are fully contacted and mixed, and improves the uniformity and stability of the final product, the carbon-containing glass.

[0048] Furthermore, the annealing step can eliminate the internal stress and defects of the glass after shaping, and promote the growth of the crystal phase in the subsequent crystallization process. Further, by limiting the mass ratio of the glass raw material and the carbon material to 1:(0.02-0.1) and performing crystallization treatment at 650℃-800℃, the carbon material can act as a nucleating agent during the preparation of the glass, which helps to promote the growth and formation of crystals. The preparation method provided by the present application can achieve different degrees of crystallization of the carbon-containing glass, thereby widening the application range of the carbon-containing glass.

[0049] In the preparation of the carbon-containing glass, the carbon material can act as a nucleating agent for the crystals, promoting the formation and growth of the crystals. It is understood that the mass ratio of the glass raw material and the carbon material can be selected from any value between 1:(0.02-0.1) in the present application. Specifically, the mass ratio of the glass raw material and the carbon material includes but is not limited to 1:0.02, 1:0.03, 1:0.05, 1:0.06, 1:0.08, 1:0.09 or 1:0.1.

[0050] To ensure the growth rate of the crystals and ensure the role of the carbon material as a nucleating agent, the present application limits the temperature of the crystallization treatment to 650-800°C. Specifically, the temperature of the crystallization treatment includes but is not limited to 650°C, 660°C, 680°C, 700°C, 710°C, 715°C, 720°C, 725°C, 750°C, 780°C, 790°C, 795°C or 800°C.

[0051] The appropriate crystallization treatment time can ensure the uniformity of the internal structure of the crystals. In some embodiments, the crystallization treatment time is 0.5-7h. Specifically, the crystallization treatment time includes but is not limited to 0.5h, 1h, 1.5h, 1.6h, 1.8h, 2h, 2.5h, 2.8h, 2.9h, 3h, 3.1h, 3.2h, 3.5h, 4h, 4.5h, 5h, 5.5h, 6h or 7h.

[0052] The preparation method provided by the present application can be applied to the crystallization process of various carbon-containing material glasses. In some embodiments, the carbon material includes one or more of graphite, charcoal, carbon black, activated carbon, carbon nanowires, carbon nanotubes or graphene.

[0053] In some embodiments, the process parameters of the annealing step include: annealing at 600-650 °C for 2-5 h, then cooling to 150-250 °C at a cooling rate of 0.3-1 °C / min, and then cooling to room temperature. The annealing process parameters provided herein can facilitate the release and rearrangement of defects and stresses in the interior of the glass after forming, so as to optimize the microstructure of the glass and facilitate the growth of crystal phases in the subsequent crystallization process. Understandably, the initial annealing temperature can be selected from any value between 600 °C and 650 °C. Specifically, the initial annealing temperature includes but is not limited to 600 °C, 610 °C, 620 °C, 630 °C, 640 °C or 650 °C. The cooling rate includes but is not limited to 0.3 °C / min, 0.4 °C / min, 0.5 °C / min, 0.6 °C / min, 0.7 °C / min, 0.8 °C / min, 0.9 °C / min or 1 °C / min. The temperature to which the cooling is performed includes any value between 150 °C and 250 °C. For example, the temperature to which the cooling is performed includes but is not limited to 150 °C, 170 °C, 180 °C, 190 °C, 200 °C, 210 °C, 220 °C, 230 °C, 240 °C or 250 °C.

[0054] In some embodiments, the mixture further comprises a fining agent.

[0055] In some embodiments, the mass ratio of the glass raw material to the fining agent is 1:(0.002-0.006). Setting the mass ratio of the glass raw material to the fining agent in this range can facilitate the precipitation of impurities in the glass, reduce the turbidity of the glass, and improve the melting performance of the glass, making the glass more easily formed in subsequent processes. Specifically, the mass ratio of the glass raw material to the fining agent includes but is not limited to 1:0.002, 1:0.003, 1:0.004, 1:0.005 or 1:0.006.

[0056] Understandably, the "forming" step mentioned herein refers to casting the molten liquid into a mold for casting forming. Different forming molds can be selected for forming.

[0057] In some embodiments, the fining agent includes one or more of an oxide fining agent, a sulfate-type fining agent, a halide-type fining agent or an ammonium salt fining agent. The oxide fining agent includes but is not limited to Sb2O3, CeO2, SnO2, SnO. The sulfate-type fining agent includes but is not limited to Na2SO4, CaSO4. The halide-type fining agent includes but is not limited to NaCl. The ammonium salt fining agent includes but is not limited to NH4Cl.

[0058] In general, the method for preparing carbon-containing glass provided herein can be applied to glass raw materials of various chemical compositions. For example, the glass raw material can have a chemical composition, in mass percent, of: SiO245-80%, Na2O 2-18%, CaO 0-12%, MgO 0-2%, K2O 0-1%, Al2O3 0-30%, and B2O3 0-15%.

[0059] In some embodiments, the glass raw material can have a chemical composition, in mass percent, of: SiO2 65-80%, Na2O 10-16%, CaO 5-12%, MgO 0-1%, Al2O3 0-5%, and B2O3 0-4%. This example glass raw material composition is similar to that of soda-lime glass, and thus, soda-lime glass cullet or soda-lime glass cullet can be used as the glass raw material herein. In addition, quartz sand, sodium carbonate, calcium carbonate, magnesium oxide powder, aluminum oxide powder, boric acid, and the like can also be used as raw materials, as long as the chemical components thereof satisfy the above-mentioned contents. Specifically, in this example, the mass percent of SiO2 includes, but is not limited to, 65%, 68%, 70%, 72%, 75%, 76%, 77%, 78%, or 80%. The mass percent of Na2O includes, but is not limited to, 10%, 12%, 13%, 14%, 15%, or 16%. The mass percent of CaO includes, but is not limited to, 5%, 6%, 7%, 8%, 9%, 10%, or 12%. The mass percent of MgO includes, but is not limited to, 0%, 0.01%, 0.02%, 0.05%, 0.07%, 0.08%, 0.1%, 0.2%, 0.5%, 0.7%, 0.8%, or 1%. The mass percent of Al2O3 includes, but is not limited to, 1%, 1.5%, 1.8%, 2%, 2.1%, 2.2%, 2.4%, 2.5%, 2.8%, 3%, 3.5%, 4%, 4.5%, or 5%. The mass percent of B2O3 includes, but is not limited to, 1%, 1.5%, 1.8%, 2%, 2.1%, 2.2%, 2.5%, 3%, 3.5%, or 4%. Preferably, in this example, the glass raw material has a chemical composition of: SiO2 72-78%, Na2O 12-14%, CaO 5-8%, MgO 0-0.05%, Al2O3 1-3%, and B2O3 1-3%.

[0060] In some embodiments, the chemical composition of the glass raw material comprises, in mass percentage, SiO245-70%, Na2O 5-18%, K2O 0-1%, MgO 0-2%, and Al2O3 20-30%. The glass chemical composition of this example is similar to that of alumino-silicate glass, and thus, alumino-silicate glass cullet or alumino-silicate glass scrap can be used as the glass raw material of the present application. In addition, quartz sand, sodium carbonate, potassium nitrate, magnesium oxide powder, and aluminum oxide powder can also be used as the raw material for preparation, as long as the chemical components thereof satisfy the above-mentioned contents. Specifically, in this example, the mass percentage of SiO2 includes but is not limited to 45%, 50%, 55%, 58%, 59%, 60%, 61%, 62%, 63%, 65%, 68%, or 70%. The mass percentage of Na2O includes but is not limited to 5%, 7%, 9%, 11%, 12%, 13%, 14%, 15%, or 18%. The mass percentage of K2O includes but is not limited to 0.1%, 0.3%, 0.5%, 0.8%, 0.9%, or 1%. The mass percentage of MgO includes but is not limited to 0.5%, 0.8%, 1%, 1.1%, 1.2%, 1.5%, or 2%. The mass percentage of Al2O3 includes but is not limited to 20%, 22%, 24%, 25%, 26%, 28%, or 30%. Preferably, in this example, the chemical composition of the glass raw material comprises SiO2 58-62%, Na2O 12-15%, K2O 0.5-1%, MgO 0.5-1.5%, and Al2O3 22-28%.

[0061] In some embodiments, the chemical composition of the glass raw material comprises, in mass percentage, SiO270-80%, Na2O 2-10%, CaO 0-2%, Al2O3 0-5%, and B2O3 5-15%. The glass chemical composition of this example is similar to that of borosilicate glass, and thus, borosilicate glass ingot or borosilicate glass cullet can be used as the glass raw material of the present application. In addition, quartz sand, sodium carbonate, calcium carbonate, alumina powder, boric acid, and the like can also be used as the raw material for preparation, as long as the chemical composition thereof satisfies the above-mentioned content. Specifically, in this example, the mass percentage of SiO2 includes but is not limited to 70%, 72%, 75%, 76%, 77%, 78%, 79%, or 80%. The mass percentage of Na2O includes but is not limited to 2%, 3%, 5%, 6%, 7%, 8%, or 10%. The mass percentage of CaO includes but is not limited to 0.5%, 0.8%, 0.9%, 1%, 1.1%, 1.2%, 1.5%, or 2%. The mass percentage of Al2O3 includes but is not limited to 2%, 2.5%, 2.8%, 3%, 3.2%, 3.5%, 4%, 4.5%, 4.8%, or 5%. The mass percentage of B2O3 includes but is not limited to 5%, 6%, 8%, 10%, 12%, 13%, 14%, or 15%. Preferably, in this example, the chemical composition of the glass raw material comprises SiO275-80%, Na2O 5-8%, CaO 0.5-1%, Al2O3 2-4%, and B2O3 10-14%.

[0062] In some embodiments, the melting temperature is 1200-1600°C. Specifically, the melting temperature includes but is not limited to 1200°C, 1250°C, 1300°C, 1350°C, 1400°C, 1450°C, 1500°C, 1550°C, or 1600°C.

[0063] In some embodiments, the mixing method of the glass raw material and the carbon material is ball milling. It can be understood that the ball milling method can be a conventional ball milling method in the art, and the grinding balls can be quartz grinding balls or corundum grinding balls, as long as the particle size of the mixture can be ball milled to 0.005-0.1 mm.

[0064] In order to facilitate the understanding of the preparation method of the carbon-containing glass, the preparation methods of three different glass raw material chemical compositions are also provided as follows.

[0065] Referring to FIG. 1, the present application provides a preparation method of a carbon-containing glass using a sodium-calcium glass-like glass raw material, comprising the following steps:

[0066] a1, selecting a glass raw material with a chemical composition comprising: SiO2 65% to 80%, Na2O 10% to 16%, CaO 5% to 12%, MgO 0 to 1%, Al2O3 0 to 5%, and B2O3 0 to 4%, mixing the glass raw material and a carbon material at a mass ratio of 1:(0.02 to 0.1) to prepare a mixture;

[0067] a2, heating the mixture to 1300°C to 1500°C to prepare a molten liquid;

[0068] a3, shaping the molten liquid, annealing at 600°C to 650°C for 2h to 5h, then cooling to 150°C to 250°C at a cooling rate of 0.3°C / min to 1°C / min, and then cooling to room temperature, and then performing crystallization treatment at 650°C to 800°C to prepare the carbon-containing glass.

[0069] Referring to FIG. 2, the application provides a preparation method of a carbon-containing glass using an aluminum-silicon glass-like glass raw material, comprising the following steps:

[0070] b1, selecting a glass raw material with a chemical composition comprising: SiO2 45% to 70%, Na2O 5% to 18%, K2O 0 to 1%, MgO 0 to 2%, and Al2O3 20% to 30%, mixing the glass raw material and a carbon material at a mass ratio of 1:(0.02 to 0.1) to prepare a mixture;

[0071] b2, heating the mixture to 1400°C to 1600°C to prepare a molten liquid;

[0072] b3, shaping the molten liquid, annealing at 600°C to 650°C for 2h to 5h, then cooling to 150°C to 250°C at a cooling rate of 0.3°C / min to 1°C / min, and then cooling to room temperature, and then performing crystallization treatment at 650°C to 800°C to prepare the carbon-containing glass.

[0073] Referring to FIG. 3, the application provides a preparation method of a carbon-containing glass using a boron-silicon glass-like glass raw material, comprising the following steps:

[0074] c1, selecting a glass raw material with a chemical composition comprising: SiO2 70% to 80%, Na2O 2% to 10%, CaO 0 to 2%, Al2O3 0% to 5%, and B2O3 5% to 15%, mixing the glass raw material and a carbon material at a mass ratio of 1:(0.02 to 0.1) to prepare a mixture;

[0075] c2, heating the mixture to 1400°C to 1600°C to prepare a molten liquid;

[0076] c3. forming the molten liquid, annealing at 600-650 °C for 2-5 h, then cooling at a rate of 0.3-1 °C / min to 150-250 °C, and then cooling to room temperature, and then performing a crystallization treatment at 650-800 °C to produce the carbon-containing glass.

[0077] In a second aspect of the present application, a carbon-containing glass is provided, which is produced by the method of the first aspect of the present application.

[0078] In some embodiments, the carbon-containing glass has a chemical composition, in mass percent, comprising: SiO2 58-79%, Na2O 9-16%, CaO 4.5-12%, MgO 0-1%, Al2O3 0-5%, B2O3 0-3.7%, carbon material 1.8-10%, and fining agent 0.15-0.6%. Understandably, the chemical composition of the carbon-containing glass produced using the glass raw materials of the above sodium-calcium glass is as shown in the present example. Specifically, in the present example, the mass percent of SiO2 includes but is not limited to 58%, 60%, 62%, 65%, 68%, 70%, 72%, 75%, 76%, 77%, 78%, or 79%. The mass percent of Na2O includes but is not limited to 9%, 10%, 12%, 13%, 14%, 15%, or 16%. The mass percent of CaO includes but is not limited to 4.5%, 5%, 6%, 7%, 8%, 9%, 10%, or 12%. The mass percent of MgO includes but is not limited to 0%, 0.01%, 0.02%, 0.05%, 0.07%, 0.08%, 0.1%, 0.2%, 0.5%, 0.7%, 0.8%, or 1%. The mass percent of Al2O3 includes but is not limited to 1%, 1.5%, 1.8%, 2%, 2.1%, 2.2%, 2.4%, 2.5%, 2.8%, 3%, 3.5%, 4%, or 5%. The mass percent of B2O3 includes but is not limited to 1%, 1.5%, 1.8%, 2%, 2.1%, 2.2%, 2.5%, 3%, 3.5%, or 3.7%. The mass percent of carbon material includes but is not limited to 1.8%, 2%, 5%, 7%, 9%, or 10%. The mass percent of fining agent includes but is not limited to 0.15%, 0.18%, 0.19%, 0.45%, 0.48%, 0.5%, 0.52%, or 0.6%.

[0079] In some embodiments, the chemical composition of the carbon-containing glass comprises, in mass percent: Si02 40-69%, Na20 4.5-18%, K20 0-1%, MgO 0-2%, AI2O3 18-30%, carbon material 1.8-10%, and fining agent 0.15-0.6%. It is understood that the chemical composition of the carbon-containing glass made from the glass raw materials of the above-described alumino-silicate-like glass is as shown in this example. Specifically, in this example, the mass percent of Si02 includes, but is not limited to, 40%, 42%, 45%, 50%, 55%, 58%, 59%, 60%, 61%, 62%, 63%, 65%, 68%, or 69%. The mass percent of Na20 includes, but is not limited to, 4.5%, 5%, 6%, 7%, 9%, 11%, 12%, 13%, 14%, 15%, or 18%. The mass percent of K20 includes, but is not limited to, 0.1%, 0.3%, 0.5%, 0.8%, 0.9%, or 1%. The mass percent of MgO includes, but is not limited to, 0.5%, 0.8%, 1%, 1.1%, 1.2%, 1.5%, or 2%. The mass percent of AI2O3 includes, but is not limited to, 18%, 22%, 24%, 25%, 26%, 28%, or 30%. The mass percent of carbon material includes, but is not limited to, 1.8%, 2%, 5%, 7%, 9%, or 10%. The mass percent of fining agent includes, but is not limited to, 0.15%, 0.18%, 0.19%, 0.45%, 0.48%, 0.5%, 0.52%, or 0.6%.

[0080] In some embodiments, the chemical composition of the carbon-containing glass comprises, in mass percent, SiO263-78.5%, Na2O 1.8-10%, CaO 0-2%, Al2O3 0-5%, B2O34.5-15%, carbon material 1.8-10%, and fining agent 0.15-0.6%. The chemical composition of the carbon-containing glass prepared from the glass raw materials of the above borosilicate-like glass is shown in the present example. Specifically, the mass percent of SiO2in the present example includes, but is not limited to, 63%, 65%, 67%, 69%, 72%, 75%, 76%, 77%, 78%, or 78.5%. The mass percent of Na2O includes, but is not limited to, 1.8%, 2%, 2.5%, 3%, 5%, 6%, 7%, 8%, or 10%. The mass percent of CaO includes, but is not limited to, 0.5%, 0.8%, 0.9%, 1%, 1.1%, 1.2%, 1.5%, or 2%. The mass percent of Al2O3includes, but is not limited to, 2%, 2.5%, 2.8%, 3%, 3.2%, 3.5%, 4%, 4.5%, 4.8%, or 5%. The mass percent of B2O3includes, but is not limited to, 4.5%, 5%, 6%, 8%, 10%, 12%, 13%, 14%, or 15%. The mass percent of carbon material includes, but is not limited to, 1.8%, 2%, 5%, 7%, 9%, or 10%. The mass percent of fining agent includes, but is not limited to, 0.15%, 0.18%, 0.19%, 0.45%, 0.48%, 0.5%, 0.52%, or 0.6%.

[0081] In a third aspect, the present application provides a use of the carbon-containing glass according to the second aspect of the present application in a curtain wall glass, a fireproof glass, a heat-resistant vessel glass, a home decoration glass, a pharmaceutical glass, an automobile glass, a solar heat collecting tube glass, or a cover plate glass for a display device.

[0082] The present application is further illustrated by the following specific examples, but the present application is not limited to the following examples.

[0083] Example 1

[0084] The present application provides a carbon-containing glass and a preparation method thereof, comprising the following steps:

[0085] (1) selecting a soda-lime glass raw sheet with a chemical composition of SiO276%, Na2O 13%, CaO 7%, Al2O32%, and B2O32%, mixing the soda-lime glass raw sheet, carbon material graphite powder (particle size of about 1 μm), and fining agent cerium oxide at a mass ratio of 1:0.06:0.005 to prepare a mixture;

[0086] (2) heating the mixture to 1400°C to prepare a molten liquid;

[0087] (3) the molten liquid is shaped, annealed at 600℃ for 3h, cooled to 200℃ at a cooling rate of 0.5℃ / min, then cooled to room temperature, and then crystallized at 650℃ for 2h to prepare the carbon-containing glass.

[0088] Example 2

[0089] The example 2 of the present application provides a carbon-containing glass and a preparation method thereof, including the following steps:

[0090] (1) a sodium-calcium glass original piece with a chemical composition of SiO276%, Na2O 13%, CaO 7%, Al2O3 2%, and B2O3 2% is selected, the sodium-calcium glass original piece, carbon material graphite powder (particle size of about 1 μm), and clarifying agent cerium oxide are mixed at a mass ratio of 1:0.06:0.005 to prepare a mixed material;

[0091] (2) the mixed material is heated to 1400℃ to prepare a molten liquid;

[0092] (3) the molten liquid is shaped, annealed at 600℃ for 3h, cooled to 200℃ at a cooling rate of 0.5℃ / min, then cooled to room temperature, and then crystallized at 720℃ for 2h to prepare the carbon-containing glass.

[0093] Example 3

[0094] The example 3 of the present application provides a carbon-containing glass and a preparation method thereof, including the following steps:

[0095] (1) a sodium-calcium glass original piece with a chemical composition of SiO276%, Na2O 13%, CaO 7%, Al2O3 2%, and B2O3 2% is selected, the sodium-calcium glass original piece, carbon material graphite powder (particle size of about 1 μm), and clarifying agent cerium oxide are mixed at a mass ratio of 1:0.06:0.005 to prepare a mixed material;

[0096] (2) the mixed material is heated to 1400℃ to prepare a molten liquid;

[0097] (3) the molten liquid is shaped, annealed at 600℃ for 3h, cooled to 200℃ at a cooling rate of 0.5℃ / min, then cooled to room temperature, and then crystallized at 800℃ for 2h to prepare the carbon-containing glass.

[0098] Example 4

[0099] The example 4 of the present application provides a carbon-containing glass and a preparation method thereof, including the following steps:

[0100] (1) selecting a soda-lime glass original sheet with a chemical composition of SiO276%, Na2O 13%, CaO 7%, Al2O3 2%, and B2O3 2%, mixing the soda-lime glass original sheet, carbon material graphite powder (particle size about 1 μm), and clarifying agent cerium oxide at a mass ratio of 1:0.02:0.005 to prepare a mixture;

[0101] (2) heating the mixture to 1400°C to prepare a molten liquid;

[0102] (3) shaping the molten liquid, annealing at 600°C for 3h, then cooling to 200°C at a cooling rate of 0.5°C / min, and then cooling to room temperature, and then performing crystallization treatment at 720°C for 2h to prepare a carbon-containing glass.

[0103] Example 5

[0104] The example 5 provides a carbon-containing glass and a preparation method thereof, including the following steps:

[0105] (1) selecting a soda-lime glass original sheet with a chemical composition of SiO276%, Na2O 13%, CaO 7%, Al2O3 2%, and B2O3 2%, mixing the soda-lime glass original sheet, carbon material graphite powder (particle size about 1 μm), and clarifying agent cerium oxide at a mass ratio of 1:0.1:0.005 to prepare a mixture;

[0106] (2) heating the mixture to 1400°C to prepare a molten liquid;

[0107] (3) shaping the molten liquid, annealing at 600°C for 3h, then cooling to 200°C at a cooling rate of 0.5°C / min, and then cooling to room temperature, and then performing crystallization treatment at 720°C for 2h to prepare a carbon-containing glass.

[0108] Example 6

[0109] The example 6 provides a carbon-containing glass and a preparation method thereof, including the following steps:

[0110] (1) selecting a soda-lime glass original sheet with a chemical composition of SiO276%, Na2O 13%, CaO 7%, Al2O3 2%, and B2O3 2%, mixing the soda-lime glass original sheet, carbon material graphite powder (particle size about 1 μm), and clarifying agent cerium oxide at a mass ratio of 1:0.1:0.005 to prepare a mixture;

[0111] (2) heating the mixture to 1400°C to prepare a molten liquid;

[0112] (3) the molten liquid is shaped, annealed at 600℃ for 3h, cooled to 200℃ at a cooling rate of 0.5℃ / min, then cooled to room temperature, and then crystallized at 720℃ for 2h to prepare the carbon-containing glass.

[0113] Example 7

[0114] The example 7 of the present application provides a carbon-containing glass and a preparation method thereof, including the following steps:

[0115] (1) glass raw materials with a chemical composition of SiO2 76%, Na2O 13%, CaO 7%, Al2O3 2%, and B2O3 2% are selected, wherein the glass raw materials include 0.3:0.7 of sodium-calcium glass raw pieces and sodium-calcium glass slag; the glass raw materials, carbon material graphite powder (particle size of about 1 μm), and clarifying agent cerium oxide are mixed at a mass ratio of 1:0.06:0.005 to prepare a mixture;

[0116] (2) the mixture is heated to 1430℃ to prepare a molten liquid;

[0117] (3) the molten liquid is shaped, annealed at 600℃ for 3h, cooled to 200℃ at a cooling rate of 0.5℃ / min, then cooled to room temperature, and then crystallized at 720℃ for 2h to prepare the carbon-containing glass.

[0118] Example 8

[0119] The example 8 of the present application provides a carbon-containing glass and a preparation method thereof, including the following steps:

[0120] (1) aluminum-silicon glass raw pieces with a chemical composition of SiO2 60%, Na2O 13%, K2O 1%, Al2O3 25%, and MgO 1% are selected, and the aluminum-silicon glass raw pieces, carbon material graphite powder (particle size of about 1 μm), and clarifying agent cerium oxide are mixed at a mass ratio of 1:0.06:0.005 to prepare a mixture;

[0121] (2) the mixture is heated to 1500℃ to prepare a molten liquid;

[0122] (3) the molten liquid is shaped, annealed at 600℃ for 3h, cooled to 200℃ at a cooling rate of 0.5℃ / min, then cooled to room temperature, and then crystallized at 720℃ for 2h to prepare the carbon-containing glass.

[0123] Example 9

[0124] The example 9 of the present application provides a carbon-containing glass and a preparation method thereof, including the following steps:

[0125] (1) Selecting a borosilicate glass original piece with a chemical composition of SiO277%, Na2O 7%, Al2O3 3%, CaO 1%, and B2O3 12%, mixing the borosilicate glass original piece, carbon material graphite powder (particle size about 1 μm), and clarifying agent cerium oxide in a mass ratio of 1:0.06:0.005 to prepare a mixture;

[0126] (2) Heating the mixture to 1500°C to prepare a molten liquid;

[0127] (3) Forming the molten liquid, annealing at 600°C for 3h, then cooling to 200°C at a cooling rate of 0.5°C / min, and then cooling to room temperature, and then performing crystallization treatment at 720°C for 2h to prepare a carbon-containing glass.

[0128] Comparative Example 1

[0129] Comparative Example 1 and Example 2 are basically the same, the main difference is that no carbon material is added in Comparative Example 1. The specific steps of Comparative Example 1 are as follows:

[0130] (1) Selecting a soda-lime glass original piece with a chemical composition of SiO276%, Na2O 13%, CaO 7%, Al2O3 2%, and B2O3 2%, mixing the soda-lime glass original piece and clarifying agent cerium oxide in a mass ratio of 1:0.005 to prepare a mixture;

[0131] (2) Heating the mixture to 1400°C to prepare a molten liquid;

[0132] (3) Forming the molten liquid, annealing at 600°C for 3h, then cooling to 200°C at a cooling rate of 0.5°C / min, and then cooling to room temperature, and then performing crystallization treatment at 720°C for 2h to prepare a carbon-containing glass.

[0133] Comparative Example 2

[0134] Comparative Example 2 and Example 2 are basically the same, the main difference is that the soda-lime glass original piece, carbon material graphite powder (particle size about 1 μm), and clarifying agent cerium oxide are mixed in a mass ratio of 1:0.01:0.005 in Comparative Example 2. The specific steps of Comparative Example 2 are as follows:

[0135] (1) Selecting a soda-lime glass original piece with a chemical composition of SiO276%, Na2O 13%, CaO 7%, Al2O3 2%, and B2O3 2%, mixing the soda-lime glass original piece, carbon material graphite powder (particle size about 1 μm), and clarifying agent cerium oxide in a mass ratio of 1:0.01:0.005 to prepare a mixture;

[0136] (2) Heating the mixture to 1400°C to prepare a molten liquid;

[0137] (3) The molten liquid was shaped, annealed at 600°C for 3h, then cooled to 200°C at a cooling rate of 0.5°C / min, and then cooled to room temperature, and then subjected to crystallization treatment at 720°C for 2h to prepare a carbon-containing glass.

[0138] Comparative Example 3

[0139] Comparative Example 3 is basically the same as Example 2, with the main difference being that in Comparative Example 3, the soda-lime glass original piece, the carbon material graphite powder (particle size of about 1 μm), and the clarifying agent cerium oxide were mixed in a mass ratio of 1:0.12:0.005. The specific steps of Comparative Example 3 are as follows:

[0140] (1) A soda-lime glass original piece with a chemical composition of SiO276%, Na2O 13%, CaO 7%, Al2O3 2%, and B2O3 2% was selected, and the soda-lime glass original piece, the carbon material graphite powder (particle size of about 1 μm), and the clarifying agent cerium oxide were mixed in a mass ratio of 1:0.12:0.005 to prepare a mixture;

[0141] (2) The mixture was heated to 1400°C to prepare a molten liquid;

[0142] (3) The molten liquid was shaped, annealed at 600°C for 3h, then cooled to 200°C at a cooling rate of 0.5°C / min, and then cooled to room temperature, and then subjected to crystallization treatment at 720°C for 2h to prepare a carbon-containing glass.

[0143] Comparative Example 4

[0144] Comparative Example 4 is basically the same as Example 2, with the main difference being that in Comparative Example 4, the crystallization temperature was 550°C. The specific steps of Comparative Example 4 are as follows:

[0145] (1) A soda-lime glass original piece with a chemical composition of SiO276%, Na2O 13%, CaO 7%, Al2O3 2%, and B2O3 2% was selected, and the soda-lime glass original piece, the carbon material graphite powder (particle size of about 1 μm), and the clarifying agent cerium oxide were mixed in a mass ratio of 1:0.12:0.005 to prepare a mixture;

[0146] (2) The mixture was heated to 1400°C to prepare a molten liquid;

[0147] (3) The molten liquid was shaped, annealed at 600°C for 3h, then cooled to 200°C at a cooling rate of 0.5°C / min, and then cooled to room temperature, and then subjected to crystallization treatment at 550°C for 2h to prepare a carbon-containing glass.

[0148] Comparative Example 5

[0149] Comparative Example 5 and Example 2 are substantially the same, with the main difference being that the crystallization temperature in Comparative Example 5 is 850°C. The specific steps of Comparative Example 5 are as follows:

[0150] (1) A soda-lime glass original piece with a chemical composition of SiO276%, Na2O 13%, CaO 7%, Al2O3 2%, and B2O3 2% was selected. The soda-lime glass original piece, carbon material graphite powder (particle size of about 1 μm), and clarifying agent cerium oxide were mixed in a mass ratio of 1:0.12:0.005 to prepare a mixture;

[0151] (2) The mixture was heated to 1400°C to prepare a molten liquid;

[0152] (3) The molten liquid was shaped, annealed at 600°C for 3 h, then cooled to 200°C at a cooling rate of 0.5°C / min, and then cooled to room temperature. Crystallization treatment was performed at 850°C for 2 h to prepare a carbon-containing glass.

[0153] Comparative Example 6

[0154] Comparative Example 6 and Example 8 are substantially the same, with the main difference being that no carbon material was added in Comparative Example 6. The specific steps of Comparative Example 6 are as follows:

[0155] (1) An alumino-silicate glass original piece with a chemical composition of SiO260%, Na2O 13%, K2O 1%, Al2O3 25%, and MgO 1% was selected. The alumino-silicate glass original piece and clarifying agent cerium oxide were mixed in a mass ratio of 1:0.005 to prepare a mixture;

[0156] (2) The mixture was heated to 1500°C to prepare a molten liquid;

[0157] (3) The molten liquid was shaped, annealed at 600°C for 3 h, then cooled to 200°C at a cooling rate of 0.5°C / min, and then cooled to room temperature. Crystallization treatment was performed at 720°C for 2 h to prepare a carbon-containing glass.

[0158] Comparative Example 7

[0159] Comparative Example 7 and Example 9 are substantially the same, with the main difference being that no carbon material was added in Comparative Example 7. The specific steps of Comparative Example 7 are as follows:

[0160] (1) A borosilicate glass original piece with a chemical composition of SiO277%, Na2O 7%, Al2O3 3%, CaO 1%, and B2O3 12% was selected. The borosilicate glass original piece and clarifying agent cerium oxide were mixed in a mass ratio of 1:0.005 to prepare a mixture;

[0161] (2) The mixture was heated to 1500°C to prepare a molten liquid;

[0162] (3) The molten liquid is shaped, annealed at 600°C for 3h, then cooled to 200°C at a cooling rate of 0.5°C / min, and then cooled to room temperature, and then subjected to a crystallization treatment at 720°C for 2h to prepare a carbon-containing glass.

[0163] The carbon-containing glasses prepared in the examples and comparative examples were subjected to transmittance testing according to the national standard GB / T 36403-2018, using a VMS-1S transmittance tester, at a wavelength of 400nm-1000nm, and a glass thickness of 1mm. The glass transmittance values at a wavelength of 600nm are shown in Tables 1-3.

[0164] Based on X-ray diffraction (XRD), Rietveld analysis was used to determine the crystalline phases and the mass percentages of the respective crystalline phases in some of the examples and comparative examples. The test results for Example 2, Example 3, and Comparative Example 4 are shown in Figures 4-6.

[0165] Table 1

[0166] Table 2

[0167] Table 3

[0168] Figures 4 and 5 are XRD patterns of the carbon-containing glasses of Example 2 and Example 3, respectively. Figures 4 and 5 show SiO2 peaks at 22°-23°. The crystallization temperature in Example 3 is slightly higher than that in Example 2, and the XRD peaks in Figure 5 are also stronger, which indicates that the crystalline phase content after crystallization at 800°C is higher than that after crystallization at 750°C. Further, as shown in Table 1, the appearance of the carbon-containing glass of Example 3 is white and opaque, and the transmittance at 600nm is 5%. The crystallization temperature in Figure 4 is 720°C, and the corresponding XRD peak intensity is relatively weak, the crystallization particle size is slightly smaller, and the crystallinity is slightly lower. Further, as shown in Table 1, the appearance of the carbon-containing glass of Example 2 is translucent, and the transmittance at 600nm is 60%. Figure 6 corresponds to the XRD pattern of the carbon-containing glass of Comparative Example 4 crystallized at a temperature of 550°C. As shown in Figure 6, there are no crystalline phases, i.e., the carbon-containing glass prepared in Comparative Example 4 has no crystalline phase, and as shown in Table 1, the appearance is transparent, and the transmittance at 600nm is 90%. That is, the high transmittance indicates that the lower the crystallinity of the glass.

[0169] In Table 1, Examples 1-3, the main difference is only the crystallization temperature. From the perspective of transparency, the higher the crystallization temperature, the more conducive to the formation of crystalline phases. However, when the crystallization temperature is too high, at 850°C, corresponding to Comparative Example 5, the glass will undergo a large deformation, which is not conducive to its practical application.

[0170] As can be seen from Example 2, Example 4 and Example 5, the mass ratio of the glass raw material and the carbon material is limited in the range of 1:(0.06-0.1), which is beneficial to the generation of the crystal phase. However, if no carbon material is added, as shown in Comparative Example 1, the carbon-containing glass is transparent, and the transmittance at 600 nm is 90%, which indicates that the crystallinity of the glass is low. In addition, Example 8 and Comparative Example 6, Example 9 and Comparative Example 7 also show that when the silicon-aluminum glass raw sheet and the borosilicate glass raw sheet are used to prepare the carbon-containing glass, if no carbon material is added, the crystallinity of the glass is low. When a low content of carbon material is added, the carbon-containing glass is transparent, and the transmittance at 600 nm is 90%, which indicates that the crystallinity of the glass is low, as shown in Comparative Example 2. The reason for the low crystallinity is that the carbon material reacts with oxygen, which affects the crystallization of the glass. With the further increase of the content of the carbon material, the test results are shown in Comparative Example 3, at this time, the crystallization is fast, and the size of the crystal phase is not easy to control, which leads to that the high-temperature forming process has been lost.

[0171] Example 6 and Example 7 use glass scrap as the glass raw material, which can achieve similar technical effects as Example 2, which shows that as long as the chemical composition meets the chemical composition of the glass raw material, the crystallization method provided in the present application can be used.

[0172] The technical features of the above-described embodiments can be combined arbitrarily. In order to make the description simple, all possible combinations of the technical features in the above-described embodiments are not described, however, as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present disclosure.

[0173] The above-described embodiments only express several implementation manners of the present application, which are convenient for specifically and detailedly understanding the technical solutions of the present application, but cannot be understood as the limitation of the patent protection scope of the present application. It should be pointed out that, for ordinary skilled in the art, on the premise of not departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the protection scope of the present application. It should be understood that, the technical solutions obtained by the skilled in the art through logical analysis, reasoning or limited experiments on the basis of the technical solutions provided in the present application are all within the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be based on the contents of the appended claims, and the description can be used to explain the contents of the claims. Industrial applicability

[0174] The present disclosure provides a preparation method of carbon-containing glass. In the preparation method, glass raw materials and carbon materials are sequentially subjected to mixing, melting, forming, annealing and crystallization to form carbon-containing glass. The glass raw materials and carbon materials are fully mixed and melted to form a uniform molten liquid by heating the mixed materials to a melting temperature, which helps to ensure that the glass and carbon materials are fully contacted and mixed, and improves the uniformity and stability of the final product, i.e., the carbon-containing glass. Furthermore, the annealing step can eliminate the internal stress and defects of the glass after forming, and promote the crystal phase growth in the subsequent crystallization process. Further, the mass ratio of the glass raw materials and carbon materials is limited to 1:(0.02-0.1), and the crystallization treatment is performed at 650-800°C, so that the carbon materials can act as nucleating agents in the glass preparation process, which helps to promote the growth and formation of crystals. The preparation method provided by the present disclosure can realize different degrees of crystallization of the carbon-containing glass, thereby widening the application range of the carbon-containing glass.

Claims

1. A method for preparing a carbon-containing glass, comprising the steps of: mixing a glass raw material and a carbon material in a mass ratio of 1: (0.02-0.1) to prepare a mixture; heating the mixture to a melting temperature to prepare a molten liquid; and shaping the molten liquid, annealing, and then performing a crystallization treatment at 650-800 ℃ to prepare the carbon-containing glass. The carbon material comprises one or more of graphite, charcoal, carbon black, activated carbon, carbon nanowires, carbon nanotubes, or graphene. The annealing comprises annealing at 600-650 ℃ for 2-5 h, then cooling at a rate of 0.3-1 ℃ / min to 150-250 ℃, and then cooling to room temperature. The mixture further comprises a fining agent, and the mass ratio of the glass raw material to the fining agent is 1: (0.002-0.006).

2. The method of making carbon-containing glass according to claim 1, wherein, The chemical composition of the glass raw material comprises, by mass percent, 65-80% of SiO2, 10-16% of Na2O, 5-12% of CaO, 0-1% of MgO, 0-5% of Al2O3, and 0-4% of B2O3.

3. The method of producing carbon-containing glass according to claim 1 or 2, wherein, The chemical composition of the glass raw material comprises, by mass percent, 45-70% of SiO2, 5-18% of Na2O, 0-1% of K2O, 0-2% of MgO, and 20-30% of Al2O3.

4. The carbon-containing glass production method according to any one of claims 1 to 3, wherein The chemical composition of the glass raw material comprises, by mass percent, 70-80% of SiO2, 2-10% of Na2O, 0-2% of CaO, 0-5% of Al2O3, and 5-15% of B2O3.

5. The carbon-containing glass production method according to any one of claims 1 to 4, wherein The melting temperature is 1200-1600 ℃.

6. The carbon-containing glass production method according to any one of claims 1 to 4, wherein The mixing of the glass raw material and the carbon material is performed by ball milling.

7. The method of producing carbon-containing glass according to any one of claims 1 to 4, wherein The particle size of the mixture is 0.005-0.1 mm.

8. The carbon-containing glass production method according to any one of claims 1 to 7, wherein 11.A carbon-containing glass prepared by the method of any one of claims 1-10.

9. The carbon-containing glass production method according to any one of claims 1 to 8, wherein The chemical composition of the carbon-containing glass comprises, by mass percent, 58-79% of SiO2, 9-16% of Na2O, 4.5-12% of CaO, 0-1% of MgO, 0-5% of Al2O3, 0-3.7% of B2O3, 1.8-10% of a carbon material, and 0.15-0.6% of a fining agent.

10. The method of producing carbon-containing glass according to any one of claims 1 to 9, wherein The chemical composition of the carbon-containing glass comprises, by mass percent, 40-69% of SiO2, 4.5-18% of Na2O, 0-1% of K2O, 0-2% of MgO, 18-30% of Al2O3, 1.8-10% of a carbon material, and 0.15-0.6% of a fining agent. The chemical composition of the carbon-containing glass comprises, by mass percent, 63-78.5% of SiO2, 1.8-10% of Na2O, 0-2% of CaO, 0-5% of Al2O3, 4.5-15% of B2O3, 1.8-10% of a carbon material, and 0.15-0.6% of a fining agent.

12. The carbon-containing glass of claim 11, wherein, ​ 13. The carbon-containing glass of claim 11, wherein, ​ 14. The carbon-containing glass of claim 11, wherein, ​ 15. Use of the carbon-containing glass according to any one of claims 11 to 14 in a curtain wall glass, a fireproof glass, a heat-resistant vessel glass, a home decor glass, a pharmaceutical glass, an automobile glass, a solar heat collecting tube glass, or a cover glass for a display device.

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