147 results about "Glass matrix" patented technology

The invention belongs to the technical field of glass materials, and discloses thermal shock resistant transparent high borosilicate glass which comprises the following components in percentage by weight: 60-70% of silicon dioxide, 18-22% of diboron trioxide, 4-7% of aluminum oxide, 3-5% of magnesium oxide, 2-4% of alkali metal oxide, 0.5-1.5% of nano silicon nitride and 0.5-1% of nano aluminum titanate. The thermal shock temperature difference of the glass within the temperature change range of 20-200 DEG C is larger than or equal to 180 DEG C, the light transmittance within the visible light range of 400-760 nm is larger than or equal to 85%, the alkali metal oxide is composed of sodium oxide and potassium oxide, the weight ratio of the sodium oxide to the potassium oxide is 1: 1-3: 1, the average particle size of the nanometer silicon nitride is smaller than or equal to 100 nm, and the nanometer silicon nitride is evenly dispersed in the glass matrix; according to the thermal-shock-resistant transparent high borosilicate glass and the preparation method thereof, the thermal shock resistance and light transmittance of the glass are improved by optimizing the chemical components of the glass and adding the special nanoparticles in cooperation with a specific preparation process, and the thermal shock resistance of the glass is improved. The problems that existing high borosilicate glass is insufficient in thermal shock resistance and low in light transmittance in a high-temperature environment are solved.

The invention provides high-transparency rare earth doped fluoride glass and a preparation method thereof, and belongs to the technical field of glass. The calcium fluoride ensures high transparency and chemical stability, the magnesium fluoride improves the ultraviolet transmittance and the mechanical strength, and the barium fluoride optimizes the melting fluidity and the rare earth doping uniformity; aluminum fluoride is added to inhibit crystallization and enhance uniformity, the rare earth element realizes optical function regulation and control, and ammonium fluoride provides a fluorine source and reduces impurities; in a preparation link, quick lime is dedusted and then reacts with pure water in proportion, impurities in a calcium nitrate solution are removed by hydrogen peroxide, uniform growth of calcium carbonate crystal nucleuses is controlled by ammonia water and carbon dioxide, and calcium fluoride is synthesized by hydrofluoric acid in proportion and dried at low temperature after plate-frame pressure filtration and purification; after the raw materials are refined through ball milling, the melting temperature is controlled in stages, impurities, reaction integrity and a microstructure are accurately controlled in the whole process, and finally the high-transparency functional glass is prepared.

The present invention discloses a perovskite quantum dot glass with enhanced luminescence capability, a preparation method thereof, and an application thereof, and belongs to the field of perovskite quantum dot glass display technology. The present invention regulates the network structure of borosilicate glass by adding ZrO2, so that the perovskite quantum precursor glass gradually changes from self-crystallization to transparency and finally to devitrification, the network structure of the glass matrix is ​​ordered, the surface defects at the interface between the perovskite quantum dots and the glass matrix are passivated, and the radiation recombination probability is increased, thereby obtaining a perovskite quantum dot glass with significantly improved photoluminescence performance. The perovskite quantum dot glass has a green light emission wavelength of 527nm, a full width at half maximum (FWHM) of 25.8nm, an internal quantum dot efficiency of 93.1%, and a brightness of 375cd / m ‑2 The maximum green light brightness under the excitation of the blue light (450nm) plate can reach 2647cd / m ‑2 When this perovskite quantum dot glass is used as an LED backlight module in LCD display, it can achieve a color gamut area of ​​118% of the NTSC standard, which is 1.73 times the color gamut of commercial displays, achieving a wide color gamut display effect.

The invention belongs to the technical field of new materials, and discloses a composite material, a preparation method thereof and automobile glass, the composite material is a curved surface, and comprises a composite matrix, a glass plate and an organic back plate from bottom to top in sequence; wherein the composite matrix comprises a plurality of transparent ceramics and a glass matrix, and the plurality of transparent ceramics are spliced and laid in the glass matrix to form a structure that the glass is filled with the transparent ceramics. According to the invention, glass is taken as a matrix, a plurality of transparent ceramics are taken as filling bodies to form a composite matrix structure of partitioned transparent ceramic filled glass, and the composite matrix structure is compounded with a glass plate and an organic back plate, so that the composite material of the curved transparent ceramic filled glass with high safety, light weight, large size (1000mm * 1800mm) is obtained, the light transmittance is 64.2-81.2%, and the bending strength reaches 168.4-213.7 MPa.

The invention belongs to the technical field of enamel glaze, and particularly relates to enamel glaze based on transient template in-situ reaction and a preparation method and application thereof. The enamel glaze is prepared by mixing basic enamel glaze slip and a core-shell structure functional precursor, wherein the basic enamel glaze slip is water suspension prepared by mixing and grinding basic enamel frits and auxiliaries; the core-shell structure functional precursor is inorganic composite powder, and the original structure of the core-shell structure functional precursor is as follows: silicon nitride micron particles are used as a core, and a layer of Y-Zr-Ti composite oxide is coated on the surface as a shell. According to the invention, a real chemical bonding strong interface is realized, and a firm chemical bond is constructed in situ between a reinforced phase and a glass matrix by using a high-activity oxide shell layer as a solder in a final sintering stage. The problem that an interface is weak in traditional physical blending is fundamentally solved, and stress can be effectively transmitted from a matrix to a high-strength reinforced phase.

This invention discloses a method for preparing high rare-earth-doped low-loss boron-containing glass optical fibers. The steps are as follows: weigh glass raw materials containing rare-earth oxides and boron oxide, mix them uniformly, and place them in a high-temperature furnace. First, heat the mixture under a high-purity nitrogen atmosphere, then switch to a high-purity oxygen atmosphere or a high-purity air atmosphere for continued heating. The resulting glass melt is cooled and annealed to obtain a large glass block. The glass is then processed into a preform and placed in an optical fiber drawing furnace for fiber drawing under a high-purity oxygen atmosphere, thus achieving the preparation of high rare-earth-doped low-loss glass optical fibers. This invention eliminates the additional glass matrix absorption in the near-infrared region caused by boron in boron-containing glass optical fibers and also transforms the transition metal impurity ions from a low valence state with broad absorption in the near-infrared region to a high valence state with narrow low absorption in the near-infrared region. Both of these aspects significantly reduce the matrix absorption of boron-containing glass optical fibers, providing possibilities for the application of high rare-earth-doped low-loss glass optical fibers.

This invention relates to a glass cover with an outer frame, wherein a flat glass plate is directly joined to the outer frame, wherein the glass matrix within the outer frame comprises at least one of bismuth oxide and boron oxide, and the glass ceramic has a coefficient of thermal expansion of 15 × 10⁻⁶. －7 In the glass ceramics described above, the total volume fraction of the negative thermal expansion filler and the total volume fraction of the filler components are both 40% to 65%, and the softening point of the glass components in the glass matrix is ​​lower than the glass transition point of the flat glass.

The invention belongs to the technical field of preparation of amorphous composite materials, and particularly relates to a metallic glass / graphite composite material with a mineral bridge structure and a preparation method of the metallic glass / graphite composite material. Comprising the following steps: etching a plurality of graphite flakes by adopting a laser processing mode, and forming a plurality of holes which are uniformly distributed in each graphite flake; the graphite flake layers are uniformly distributed and arranged in the thickness direction and then fixed, a metal glass matrix is melted and then injected, all the graphite flake layers and all the open pores are filled with the metal glass matrix in a suction casting mode, a metal glass layer is formed on the surface of each graphite flake layer in a suction casting mode, and the metal glass / graphite composite material is obtained. According to the invention, the uniformly distributed open pore structures are formed on the surface of the graphite flake through a laser processing technology, and the graphite flake layer forms a mineral bridge structure among all the metal glass layers, so that strong binding force is formed between the graphite flake and the metal glass substrate, the graphite flake is ensured not to fall off easily under high load or impact load, and the stability is greatly improved.

The application relates to a nonlinear optical glass, comprising a glass matrix and noble metal nanocrystals doped in the glass matrix, wherein the mass fraction of the glass matrix in the nonlinear optical glass is greater than or equal to 40%, and the composition of the glass matrix is xBi2O3-(66-x)P2O5-yZnO-(34-y)Al2O3 in terms of a mole fraction, 1 < x < 21, and 26 < y < 32. The application further provides a preparation method and application of the nonlinear optical glass. The nonlinear optical glass can realize high-concentration doping of noble metal nanocrystals and improve the third-order nonlinear performance of the nonlinear optical glass.

The invention discloses high-strength photoelectric glass and a preparation method thereof, and relates to the field of photoelectric glass, and the high-strength photoelectric glass comprises the following components: 60-75% of silicon dioxide, 8-15% of aluminum oxide, 5-12% of boric oxide, 3-8% of potassium oxide, 1-5% of lithium oxide, 2-6% of titanium oxide, 0.5-2% of rare earth oxide, and 1-3% of a reinforced fiber material. Glass components are optimized, the strength and optical performance are remarkably improved, the proportion of basic components such as silicon dioxide and aluminum oxide is scientifically adjusted, and new components such as boron oxide, potassium oxide and lithium oxide are introduced to optimize a glass network structure; the rare earth oxide is added, and the special optical and physical properties of the rare earth oxide are utilized, so that the glass performance is further improved; a reinforced fiber material is added, reinforced fibers are tightly combined with a glass matrix, and a framework supporting effect is achieved. Through the synergistic effect of multiple components, the Vickers hardness of the high-strength photoelectric glass is increased to 600 HV or above, the light transmittance is larger than or equal to 90%, and the strength and the optical performance are remarkably improved.

The invention discloses a passivation method of a perovskite quantum dot and the perovskite quantum dot. The method comprises the steps that a mixed raw material is ground and then subjected to hot melting treatment, a molten material is obtained, and the mixed raw material comprises a glass matrix raw material, a lead source, a substance containing halogen elements and a cesium source; performing first heat treatment on the molten material to obtain 113-phase perovskite quantum dots of which the outer layers are coated with glass bodies; the 113-phase perovskite quantum dots with the outer layers coated with the glass bodies are subjected to second-time heat treatment, 416-phase perovskite quantum dots are formed on at least part of the surfaces of the 113-phase perovskite quantum dots, passivated perovskite quantum dots are obtained, and the temperature of the first-time heat treatment is higher than that of the second-time heat treatment. By adopting the method provided by the invention, the blue light stability of the perovskite quantum dots can be improved.

The present application is generally directed to compositions and methods for forming glass matrices which may exhibit anti-Stokes fluorescence. The glass matrices of the present disclosure are formed such that a thermal characteristic can be tuned, such as the extent to which cooling by anti-Stokes fluorescence occurs. Optical fibers, such as those used in lasers, may be formed out of the presently described glass matrices. In embodiments, glass matrices of the present disclosure may form a cladding layer around an optical fiber. Further, glass matrices of the present disclosure may be used in combination with a device or to provide cooling to said device.

The present invention provides a manufacturing method for optical fiber preforms that satisfies one or more of the following criteria: a method that produces as little manufacturing waste as possible, a method that produces a preform with the most uniform doping possible, a method that is as simple as possible to implement, and a method that is as cost-effective as possible. [Solution] A method for manufacturing an optical fiber matrix includes: a step of synthesizing glass particles using a plasma zone generated by a plasma generator; b step of repeatedly moving the glass matrix forward and backward in the axial direction relative to the plasma generator while the glass matrix is ​​rotating, wherein the forward and backward movement is performed at a relative supply speed between two reversal points; and c step of depositing glass particles on the glass matrix while the glass matrix is ​​moving and rotating relative to the plasma generator.

The present invention relates to the field of glass technology, and specifically to a low-radiation coated glass and a preparation method thereof, comprising the following steps: a glass substrate is first immersed in a sufficient amount of a hydrochloric acid solution with a mass fraction of 2% for ultrasonic treatment, with an ultrasonic power of 350-400W, ultrasonic for 1h, ultrasonic termination, water washing, and drying; and a coating layer is set on the glass substrate of step 1 to obtain a glass with a coating layer. The coated glass of the present invention uses a glass substrate as a raw material, is treated with a hydrochloric acid solution to optimize its active efficiency and cleanliness, and is then treated with a coating layer, and is simultaneously matched with a coating liquid to further optimize its low radiation, wear resistance, and easy-to-clean performance, as well as coordinately improve the scrub resistance, high temperature, and corrosion resistance stability of the product.

The invention discloses a high-strength impact-resistant glass product and a preparation method of the high-strength impact-resistant glass product in the field of glass, and the high-strength impact-resistant glass product comprises the following raw materials in parts by weight: 50-60 parts of SiO2; 10 to 15 parts of Al2O3; 5 to 8 parts of Li2O; 1 to 3 parts of Na2O; 0.5 to 1.5 parts of K2O; 2 to 5 parts of P2O5; 2 to 4 parts of ZrO2; 1 to 3 parts of TiO2; 1 to 2 parts of B2O3; 0.5 to 2 parts of rare earth oxide; 4 to 12 parts of modified SiC particles; and 1 to 3 parts of modified MoAlB particles. The modified SiC particles and the modified MoAlB particles are adopted as a double-phase reinforcing system, the thermal matching performance with a glass matrix is enhanced, and the strength and toughness of the final glass product are greatly improved under the assistance of the structural densification effect of the rare earth oxide.

The utility model discloses a wavelength conversion assembly and lighting equipment. The wavelength conversion assembly comprises a supporting piece, a reflection unit and a fluorescent glass film. Wherein the reflection unit comprises a first reflection layer and a second reflection layer which are used for reflecting light; the first reflecting layer is connected between the second reflecting layer and the supporting piece, and the thermal conductivity of the first reflecting layer is larger than that of the second reflecting layer. The fluorescent glass film covers the side, away from the supporting piece, of the second reflecting layer and is suitable for being arranged on the light path where the exciting light is located. The fluorescent glass film provided by the utility model is a fluorescent film in which a glass matrix contains fluorescent particles. Therefore, the fluorescent film arranged on the wavelength conversion assembly adopts a glass matrix inorganic packaging mode, and compared with a mode of organic packaging by organic silica gel or resin and the like, the fluorescent glass film has better heat-conducting property, so that the phenomenon that the fluorescent glass film possibly becomes yellow under long-time irradiation of high-power laser is avoided, and the service life of the fluorescent glass film is prolonged. And the excitation efficiency of the excited light is ensured.

The invention relates to a coated substrate made of glass or glass ceramic, the coating having pigment particles embedded in a glass matrix, the average layer thickness of the coating being 2 to 5 [mu] m, the transmittance of the coating being at most 2%, the average particle size d50 of the pigment particles being less than 1.0 [mu] m, and the thickness of the coating being at least 10 [mu] m. Wherein the polydispersity index (PI) of the particle size distribution of the pigment particles is at most 2.0.

The application belongs to the technical field of power generation curtain wall, and discloses a cadmium telluride power generation glass matrix and curtain wall, a mounting groove is formed in the window frame, and a cable connector is arranged in the mounting groove; a first photovoltaic junction box is arranged at the top of the first photovoltaic glass, and the first photovoltaic junction box and the cable connector are electrically connected through a photovoltaic cable; the fan frame is connected to the top of the first photovoltaic glass and is rotationally connected with the window frame; the window frame has an extension part, the extension part is located at the side of the first photovoltaic glass and extends towards the bottom of the first photovoltaic glass, and a wiring channel is formed between the extension part and the first photovoltaic glass; and the photovoltaic cable has an extension amount. The application can realize the electrical connection function without additionally increasing the bridge and the connector, and the structure is more simple and the connection is more reliable. The application further discloses a cadmium telluride power generation glass curtain wall with the cadmium telluride power generation glass matrix.

The present invention discloses an alkali metal sulfide nanocrystal dispersed glass and a preparation method thereof. The alkali metal sulfide nanocrystal dispersed glass comprises a glass matrix and alkali metal sulfide nanocrystals within the glass matrix. The glass components, measured in molar percentage, include: SiO2: 40-70; Al2O3: 0-15; B2O3: 0-15; M2O: 0-30; NO: 0-4; and M2S: 15-45, the sum of which is 100, where M represents an alkali metal element and N represents an alkaline earth metal element. The present invention achieves controllable preparation of alkali metal sulfide nanocrystals in glass through composition design and heat treatment process regulation. The preparation process is simple, the nanocrystal size is controllable, and the cost is low.

The invention discloses a narrow-band emission fluorescent powder-glass composite material for laser fluorescent display as well as a preparation method and application of the narrow-band emission fluorescent powder-glass composite material. The problems of heat accumulation and efficiency attenuation of traditional fluorescent powder under high-power laser irradiation are solved through a rapid compounding process of an ultralow-melting-point glass matrix (SnF2-NaF-P2O5 system) and narrow-band fluorescent powder (such as KSF: Mn and beta-SiAlON: Eu) in cooperation with a dynamic heat dissipation design of a device. Stable light output is achieved under the 50W laser power, the luminous flux reaches 684lm and 4770lm respectively, and the color gamut covers 125% Rec.709 after the blue laser is coupled with blue laser. Meanwhile, the device is suitable for various commercial fluorescent powder and supports the design of a patterned fluorescent rotating wheel. The application bottleneck of traditional fluorescent powder is broken through, and the fluorescent powder is particularly suitable for high-end display scenes such as IMAX cinema, AR / VR immersive display and high-brightness engineering projection.

This invention relates to the field of new materials technology, specifically to a low-optical-distortion, spotless, large-curvature tempered glass and its forming method. The glass substrate includes a glass matrix with a preset curvature and a large projected area. The surface physical tempering stress value of the glass substrate is 90MPa~150MPa, and the stress difference between different areas of its surface is controlled within 5MPa. Under anisotropic observation conditions, the glass substrate has no visible stress marks on its surface, and its transmitted optical distortion intensity is no greater than 0.05 diopter, with reflection waviness controlled within a preset extremely low threshold. By precisely controlling the surface physical tempering stress value between 90MPa and 150MPa, and creatively controlling the stress difference between different areas of its surface within 5MPa, the stress gradient approaches zero. This extreme stress uniformity fundamentally eliminates the optical birefringence phenomenon caused by local stress abrupt changes, resulting in completely no visible stress marks on the glass under anisotropic observation conditions.

The application discloses Ce:YAG fluorescent glass as well as a preparation method and application thereof, belongs to the technical field of rare earth luminescent materials, and solves the problems of serious interface corrosion, and decreased luminous efficiency and thermal stability caused by insufficient matching degree between a fluorescent glass matrix material and fluorescent powder in the prior art. The fluorescent glass comprises a glass matrix and Y3Al5O 12 :Ce fluorescent powder; wherein the glass matrix comprises, in terms of molar percentage, 45-55mol% of SiO2, 15-25mol% of Al2O3, 1-10mol% of NaF, 1-10mol% of Na2O, 2-12mol% of MgO, 3-13mol% of CaO and 1-10mol% of K2O. The application has the advantages of relatively low reaction temperature, small energy consumption, no need of complex equipment, loose and cheap material selection, and wide application in the fields of illumination, display and optical devices, etc.

The present invention relates to a process of growing a biofilm on a glass matrix comprising a step of contacting glass fragments with at least one microorganism in an open flow reactor.

The invention relates to radiation refrigeration glass based on industrial by-product fly ash and a preparation and optimization method thereof. The glass material with high sunlight reflectivity and high far infrared radiance is prepared by purifying and processing industrial by-product fly ash, using SiO2 and Al2O3 which are rich in fly ash as glass substrates and doping functional oxides such as CaO, MgO, TiO2 and ZrO2. A neural network fitting technology is innovatively adopted to establish a nonlinear mapping relationship between the glass component proportion and optical / thermal / mechanical properties, the component proportion is globally optimized in combination with a genetic algorithm or a particle swarm optimization algorithm, and the balance of high performance and low cost is realized through data driving. An optimization result is verified by utilizing tools such as MATLAB / ANSYS and the like, and indexes such as light transmittance, infrared radiance and mechanical strength are tested by experiments. The glass can be applied to the back face of a photovoltaic panel, the working temperature is reduced through efficient heat dissipation, the photoelectric efficiency is improved, and meanwhile high-added-value resource utilization of the fly ash is achieved. The material is suitable for the fields of photovoltaic power generation and building energy-saving window / wall materials, and has the advantages of environmental protection and economy.

The present invention discloses a magnetron sputtering coated glass and its preparation process, relating to the technical field of low-emissivity glass. The magnetron sputtering coated glass includes a glass substrate, and the following film layers are sequentially stacked on the upper surface of the glass substrate from bottom to top: a first film layer of silicon nitride layer, a second film layer of titanium oxide layer, a third film layer of aluminum zinc oxide layer, a fourth film layer of metallic silver layer, a fifth film layer of metallic titanium layer, a sixth film layer of titanium oxide layer, a seventh film layer of aluminum zinc oxide layer, an eighth film layer of metallic silver layer, a ninth film layer of metallic titanium layer, a tenth film layer of titanium oxide layer, an eleventh film layer of aluminum zinc oxide layer, a twelfth film layer of metallic silver layer, a thirteenth film layer of metallic titanium layer, a fourteenth film layer of titanium oxide layer, a fifteenth film layer of zinc oxide silicon layer, and a sixteenth film layer of silicon nitride. By using magnetron sputtering deposition to set multiple dielectric films, interface films and metal films on the surface of the glass matrix, the present invention forms a low-emissivity film system, realizing the transmission of visible light and the reflection of infrared light by the coated glass.

The invention discloses CsSnCl3 nanocrystal doped chalcogenide glass and acousto-optic application of the CsSnCl3 nanocrystal doped chalcogenide glass, the molar composition formula of the chalcogenide glass is 97 (0.8 GeS2-0.2 Sb2S3)-3 CsSnCl3, and CsSnCl3 nanocrystals separated out in situ through heat treatment are dispersed in the chalcogenide glass. The chalcogenide glass has the advantages as follows: the chalcogenide glass has excellent thermal mechanical properties and high robustness, the comprehensive characteristics are outstanding, the Vickers hardness, the elastic modulus, the thermo-optical coefficient, the laser damage threshold and other parameters of the chalcogenide glass are remarkably improved compared with those of current mainstream acousto-optic chalcogenide glass, and a guarantee is provided for stable operation of a device in a high-temperature and high-power environment; the CsSnCl3 nanocrystals are packaged by using the stable glass matrix, so that the problems that the Sn-based perovskite material is easy to oxidize in the environment and poor in stability are fundamentally solved; the material has good infrared acousto-optic comprehensive characteristics and an ultra-wide infrared transmission range, can be used as an acousto-optic medium to be applied to acousto-optic devices, and has a wide application prospect in the acousto-optic field.

The invention discloses a dual-band single-frequency linear polarization laser based on halogen anion and neodymium co-doped polarization maintaining optical fiber. Halogen anions, sulfur ions and neodymium are introduced into a glass matrix for co-doping, the local coordination environment and bonding covalence of Nd < 3 + > ions are regulated and controlled, and the emission cross section and bandwidth of the 0.9 mu m wave band are remarkably enhanced, so that the gain of the glass in the 0.9 mu m wave band and the gain of the glass in the 1.0 mu m wave band are balanced. A first DBR resonant cavity is formed by the optical fiber and a 0.9-micron broadband fiber grating / narrow-band polarization-maintaining fiber grating, and a second DBR resonant cavity is formed by the optical fiber and a 1.0-micron broadband fiber grating / narrow-band polarization-maintaining fiber grating, so that a cascade short linear cavity is formed, and simultaneous efficient lasing and single-longitudinal-mode stable operation of 0.9-micron and 1.0-micron dual-band laser are guaranteed.

The tungsten and halogen co-doped high-conductivity solid electrolyte disclosed by the present invention is a sodium-ion chalcogenide electrolyte, and its main crystal structure is the cubic phase c-Na3SbS4. This solid electrolyte is a glass-ceramic structure in which a high-conductivity c-Na3SbS4 crystal is wrapped by a glass matrix. The composition formula of the solid electrolyte is aNa2S-bSb2S3-cWS2-dS-eNaM, where M is any one of the elements Cl, Br, and I, and a, b, c, d, and e are all molar ratios, 0.3 ≤ a ≤ 1.2, 0.1 ≤ b ≤ 0.4, 0.2 ≤ c ≤ 0.8, d = 1, and e = c. The solid electrolyte of the present invention has a high room-temperature ionic conductivity, good stability, and a low activation energy, greatly improving the ion transport efficiency. The sodium-ion chalcogenide electrolyte prepared by the preparation method of the present invention has a dense structure, few impurities, higher crystallinity, a high room-temperature ionic conductivity, and strong performance controllability.

The invention discloses an enhanced TFT alkali-free glass substrate and a preparation process thereof, and belongs to the technical field of glass. According to the invention, by optimizing the components of the glass matrix and the concentration gradient regulation strategy of the nanowires, the refractive index matching of the Ni-TiSMA nanowires and the glass matrix is realized, and the visible light transmittance of the substrate is kept to be 91% or above, so that the problems of light scattering and transmittance reduction caused by refractive index difference in the prior art are solved, and both the mechanical strength and the thermal stability are improved. Specifically, by accurately controlling the distribution gradient and surface modification of the nanowires in the glass substrate and the synergistic effect of the nanowires and the glass substrate, the applicability of the glass substrate in the high-end display field is improved, the strict requirements of a large-size, high-resolution and light and thin display technology for the performance of the substrate are met, and by means of an innovative preparation process, the glass substrate can be manufactured into a large-size, high-resolution and light-thin glass substrate. Precise control over gradient distribution of the nanowires is achieved, and a feasible scheme is provided for large-scale production of high-performance TFT alkali-free glass substrates.

The invention provides optical glass, a preparation method thereof and a light guide plate. The optical glass comprises a glass matrix, and the glass matrix comprises the following components in terms of 100% of the total mass of the glass matrix: 0.5%-8.0% of B; 0.5%-6% of Si; 30% to 55% of La; 0.5%-12% of Y; ti: 3.1% to 10.5%; 0.9% to 9.5% of Nb; 0%-4.5% of Zn; 0.9% to 8.4% of Zr; 18.7% to 31.5% of O; the refractive index of the optical glass is 2.00 to 2.03, and the abbe number of the optical glass is 27 to 33. The optical glass has the advantages of high refractive index, low density, appropriate relative grinding hardness and Knoop hardness, and high internal transmittance.