579 results about "Boron oxide" patented technology

A vacuum insulating panel includes first and second substrates (e.g., glass substrates), a hermetic edge seal, a pump-out port, and spacers sandwiched between at least the two substrates. The gap between the substrates may be at a pressure less than atmospheric pressure to provide insulating properties. The vacuum insulating panel may include a multi-layer edge seal structure, including at least one layer including boron oxide (e.g., B2O3 or any other stoichiometry).

The invention provides ceramic polyolefin as well as a preparation method and application thereof, and belongs to the technical field of functional materials. The ceramic polyolefin provided by the invention is prepared from the following raw materials in parts by mass: 40-60 parts of polyolefin resin which is a mixture of polyethylene and an ethylene-octylene copolymer; 40-60 parts of porcelainized powder, wherein the porcelainized powder is a mixture of silicon dioxide, boric oxide, zinc oxide and magnesium oxide; 20-40 parts of low-melting-point glass powder, wherein the melting point of the low-melting-point glass powder is 400-600 DEG C; 15 to 60 parts of silicate filler; and 0.1 to 3 parts of an antioxidant. The ceramic polyolefin provided by the invention has excellent tensile strength and elongation at break, and a ceramic shell is complete.

The invention relates to the technical field of thermal insulation materials, and discloses a hollow glass bead as well as a preparation method and application thereof. The hollow glass beads are prepared from the following components in percentage by weight: 40 to 65 percent of silicon dioxide, 5 to 15 percent of boron oxide, 5 to 15 percent of sodium oxide, 2 to 8 percent of cuprous oxide, 1 to 5 percent of barium oxide, 2 to 10 percent of chromic oxide, 3.5 to 7.5 percent of nickel oxide, 1.5 to 3 percent of tin oxide and 1 to 5.5 percent of silicon carbide. Cuprous oxide, barium oxide and chromic oxide have high reflection coefficients, and heat absorption of buildings can be reduced; nickel oxide, tin oxide and silicon carbide have high radiation coefficients, heat can be dissipated into outdoor air in an infrared radiation mode, and therefore the temperature of the outer surface of a building is reduced. Cuprous oxide can significantly improve the surface cleanliness of the coating and enhance the thermal insulation performance of the coating.

The invention provides base metal conductive paste for a photovoltaic cell and a preparation method, a use method and application thereof, and the conductive paste comprises the following components in percentage by mass: 5-60wt% of oxide coated base metal powder, 27-77wt% of silver powder, 2-5wt% of glass powder, 0.1-3wt% of an antioxidant aid and the balance of an organic carrier; wherein the base metal powder comprises one or more of copper, tungsten, tin, nickel, aluminum and alloy powder of the copper, the tungsten, the tin, the nickel, the aluminum and the alloy powder of the aluminum, and the oxide comprises one or more of silicon oxide, aluminum oxide, titanium oxide and boric oxide. The base metal powder coated with a specific type and a proper amount of oxide is selected and matched with the oxide and the glass powder which are good in compatibility, the manufacturing cost of the conductive paste and the battery can be effectively reduced, meanwhile, the conductive paste is applied to TOPCon and BC batteries, and the battery conversion efficiency can be kept equivalent to or even superior to that of traditional pure silver conductive paste.

The invention discloses a TiB2 / TiC reinforced high-silicon heat-resistant aluminum-based composite material and a preparation method thereof, and belongs to the technical field of metal-based composite materials. Aluminum powder, titanium powder and metal oxide powder are mixed and then centrifugally sprayed to be prepared into small balls; mixing the small balls with aluminum powder, boron oxide powder and carbon powder, and pressing into a prefabricated body; smelting the intermediate alloy A, adding the preform and a covering agent for heat preservation, cooling, adding the intermediate alloy B, and stirring to obtain a mixed melt; and degassing and removing impurities from the mixed melt, refining and slagging, and then pouring to obtain the TiB2 / TiC reinforced high-silicon heat-resistant aluminum-based composite material. According to the preparation method, the TiB2 / TiC reinforced phase is generated in situ in the aluminum substrate through two-stage reaction, the reinforced micro-nano TiC and TiB2 ceramic particles are high in bonding capacity with a metal-based interface, a transition interface is free of impurities, and the mechanical property of the material is greatly improved. And the ceramic particles produced by the preparation method have the advantages of good dispersion degree in the matrix, less agglomeration, faster reaction process, fast particle generation speed and no generation of harmful gas.

The invention belongs to the technical field of glass, and particularly relates to high-light-transmittance glass and a preparation method of the high-light-transmittance glass. The raw materials comprise the following components in parts by weight: 20 to 30 parts of quartz sand, 15 to 18 parts of sodium carbonate, 8 to 10 parts of limestone, 5 to 7 parts of dolomite, 0.3 to 0.5 part of a clarifying agent, 0.2 to 0.3 part of a coloring inhibitor, 0.1 to 0.2 part of lithium carbonate, 0.05 to 0.1 part of titanium dioxide, 0.1 to 0.3 part of zirconium oxide, 2 to 4 parts of aluminum oxide, 1 to 3 parts of boron oxide, 0.3 to 0.5 part of nano silicon dioxide sol and 1 to 3 parts of a high-temperature-resistant agent; and 1-5 parts of a wear-resistant agent. The quartz sand, the sodium carbonate, the limestone, the dolomite, the clarifying agent, the coloring inhibitor, the lithium carbonate, the titanium dioxide, the zirconium oxide, the aluminum oxide, the boric oxide, the nano silicon dioxide sol, the high-temperature-resistant agent and the wear-resistant agent are used as raw materials, so that the prepared glass is high in light transmittance, and meanwhile, the performance requirements of high strength, low spontaneous explosion rate and the like are met.

The invention relates to blue high borosilicate glass and a preparation method thereof, and belongs to the technical field of glass manufacturing, and the blue high borosilicate glass comprises the following raw materials in parts by weight: 50-60 parts of silicon dioxide, 10-15 parts of boron oxide, 2-3 parts of aluminum oxide, 6-8 parts of alkali metal oxide, 3-4 parts of a compound clarifying agent and 1-3 parts of a modified coloring agent. According to the technical scheme, the cobalt blue pigment is coated with mesoporous silica, and the composite material is obtained; combining the composite material with a silane coupling agent to obtain a silanized composite material; combining the silanized composite material with boric acid ester to obtain a modified coloring agent; the prepared modified coloring agent enables the high borosilicate glass to have remarkable blue color and to be stable in color and not prone to volatilization under high-temperature and high-pressure conditions, the added composite clarifying agent is formed by mixing cerium dioxide, sodium sulfate and tin oxide, the clarity of the glass is improved, volatilization of boron is effectively reduced, and the service life of the glass is prolonged. The mechanical property and the stability of the high borosilicate glass are generally improved, and the quality of the glass is improved.

The invention provides a thermal response self-ceramization fireproof coating and a preparation method thereof. The thermal response self-ceramization fireproof coating is prepared from the following raw materials in parts by mass: 3 to 10 parts of acrylic monomer, 3 to 10 parts of organic sulfonate, 1 to 4 parts of silane coupling agent, 0.5 to 3 parts of silicate ester, 4 to 6 parts of ceramic precursor, 3 to 6 parts of fluxing agent and 0.05 to 0.4 part of initiator. The fluxing agent comprises a component A and a component B, the component A is one of boric oxide, zinc borate or low-melting-point glass powder, and the component B is one of phosphorus pentoxide and ammonium polyphosphate. The silane coupling agent can be copolymerized with an acrylic monomer to construct a C-C main chain, the C-C main chain and silicate ester are subjected to hydrolytic condensation to form a Si-O-Si three-dimensional network, a chemical cross-linked skeleton is formed, and the chemical cross-linked skeleton can generate silicon dioxide at high temperature to participate in a ceramization reaction; the ceramic precursor and silicate ester can form a strong physical cross-linking effect, so that the fireproof coating with a chemical and physical double-cross-linked network can be formed, and the fireproof coating has excellent mechanical property and machinability at normal temperature.

The present invention discloses a 3D three-dimensional glaze, which comprises the following components in percentage by weight: 45% - 60% of silicon dioxide, 17% - 25% of aluminum oxide, 1% - 2% of calcium oxide, 0.06% - 1.2% of magnesium oxide, 0.4% - 0.6% of sodium oxide, 1% - 3% of potassium oxide, 10% - 20% of zirconium oxide, 0.2% - 0.6% of zinc oxide, and 1% - 3% of boron oxide; the loss on ignition of the 3D three-dimensional glaze is 1.8% - 3.6%. The preparation method of the 3D three-dimensional glaze is to quantitatively weigh powders such as zirconium silicate, quartz powder, calcined alumina, potassium feldspar, ceramic frit powder, sodium carboxymethyl cellulose, and industrial tripolyphosphate, and then sequentially add the powders and emulsifying wax into water and stir to obtain a glaze slurry. After adjusting the viscosity of the glaze slurry, the 3D three-dimensional glaze is obtained by passing through an 80-mesh sieve. The present invention improves the adhesion of the 3D three-dimensional glaze on the surface of the green body, and when fired directly or in combination with other glazes, the three-dimensional glaze lines will not collapse, crack, have bubbles or breakpoints.

The invention relates to the technical field of ceramic production, and discloses a high-temperature hard glaze formula for bone china and a bone china production process. 4%-6% of aluminum oxide; 2%-5% of boron oxide; 3%-7% of zinc oxide; 3%-10% of an alkaline earth metal oxide; 7%-13% of alkali metal oxide; 0.5%-2% of zirconium oxide; and 0.5%-1.5% of titanium dioxide. According to the high-temperature hard glaze formula for the bone china and the bone china production process, a proper amount of boric oxide, zinc oxide and lithium oxide are added into the glaze, so that the thermal expansion coefficient of the glaze is effectively reduced, and the thermal stability of the bone china is improved; by adding aluminum oxide, the breaking strength of the bone china can be greatly improved; by adopting a lead-free formula, lead pollution is avoided, and the environment-friendly requirement is met; through the optimized glaze formula and process, the bone china surface has good glossiness and smoothness.

The invention discloses high magnetic induction oriented silicon steel and a production method. The high magnetic induction oriented silicon steel comprises the following components in percentage by weight: 0.032 to 0.065 percent of C, 2.58 to 4.02 percent of Si, 0.014 to 0.036 percent of Als, 0.021 to 0.043 percent of Mn, 0.0015 to 0.014 percent of Nb, 0.0015 to 0.0084 percent of B, 0.0037 to 0.0081 percent of N and 0.004 to 0.015 percent of S. A large amount of B element is added, a proper amount of BN and other congenital inhibitors can be provided, the situation that primary grains are too large is effectively avoided, meanwhile, boron oxide, boric acid and borate are added into the magnesium oxide additive, an acquired inhibitor can be generated with N, an AlN + BN double-inhibitor system is formed, and the stability of magnetic performance is guaranteed; and the temperature is kept at 910-1005 DEG C for 18-25 hours, so that B is fully diffused and forms a new BN inhibitor with N, and the stability of the magnetic performance is effectively improved.

The invention discloses wear-resistant ceramic glaze water and a method for preparing a ceramic product, and relates to the technical field of ceramic products. The problems that in the prior art, mixing is not uniform, abrasion resistance is insufficient, adhesive force is poor, and production cost is high are solved. The prepared glaze water can form a compact and uniform glaze layer structure through reasonable proportioning of aluminum oxide, zirconium oxide and nano silicon dioxide, so that a ceramic product shows excellent wear resistance, the wear resistance coefficient of the ceramic product reaches 0.8 or above, and titanium oxide, chromic oxide and boric oxide are added, so that the high-temperature stability of a glaze layer is enhanced, and the service life of the ceramic product is prolonged. According to the invention, the glaze layer is not cracked, does not fall off and does not change color in complex environments such as high temperature, acid-base, impact and the like, the quality and appearance effect of the finished product are remarkably improved by matching with a segmented firing process, the performance of the ceramic product is improved, the stability and operability of production are also ensured, and the production cost is reduced. Wide application prospects are realized.

The invention discloses a dinaphtho boron oxygen structure derivative and a preparation method and application thereof, and belongs to the technical field of organic light-emitting materials and semiconductors. The dinaphtho boron oxygen structure derivative has the advantages of easily available reaction raw materials, low price, conventional reaction process, high single-step reaction yield and low cost. When the prepared dinaphtho-boron-oxygen structure derivative is applied to a light-emitting layer of an OLED device as a guest light-emitting material, the roll-off efficiency of the device can be effectively reduced, the light-emitting brightness is improved, and the service life of the device is prolonged.

The invention relates to the technical field of domestic ceramics, in particular to a high-strength and high-gloss domestic ceramic and a preparation method thereof, and the high-strength and high-gloss domestic ceramic comprises the following raw materials in parts by weight: 35-45 parts of mullite, 15-20 parts of spodumene, 10-15 parts of quartz, 8-12 parts of a modifier doped with barium carbonate, 5-8 parts of a boric oxide additive and 7-11 parts of a yttrium-zinc reconditioning agent. According to the domestic ceramic, mullite, spodumene and quartz are used as matrixes, an added yttrium-zinc compound regulator is used as an antibacterial functional agent, nano-zinc oxide is blended into cobalt nitrate and yttrium nitrate solutions, sintering improvement is performed, and the antibacterial stability of the product is enhanced and optimized through compounding of yttrium, zinc and cobalt; meanwhile, the added modifier doped with barium carbonate and the boron oxide additive are mutually blended and coordinated, so that the antibacterial property, the glossiness and the strength of the obtained domestic ceramic are improved in a balanced and coordinated manner, and the product is remarkable in cold and heat resistance and temperature-resistant stability effect.

The invention discloses high-strength high-temperature-resistant fireproof industrial glass and a preparation method thereof, and relates to the technical field of glass manufacturing. The industrial glass is prepared from the following raw materials: silicon dioxide, boric oxide, aluminum oxide, sodium oxide, potassium oxide, niobium phosphate, a composite reinforcing component and a clarifying agent, the composite reinforcing component is prepared from hafnium oxide, gadolinium oxide and zinc oxide; the clarifying agent is obtained by mixing cerium dioxide and tin oxide. The preparation method of the industrial glass comprises the following steps: preparing functional components, melting glass, forming a glass substrate, and preparing the industrial glass. The prepared industrial glass is high in strength, good in high-temperature stability and excellent in fireproof performance.

A method and an apparatus for conformal boron doping of a three-dimensional structure. The method comprises: removing an oxide layer from a surface of a silicon-based three-dimensional (3D) substrate; forming, after removing the oxide layer, a first group of stacked films on a surface of the silicon-based three-dimensional substrate; forming a second group of stacked films on a surface of the first group of stacked films away from the silicon-based 3D substrate; depositing an aluminum oxide passivation layer on a surface of the second group of stacked films away from the first group of stacked films; and boron-doping the silicon-based 3D substrate through laser annealing or rapid thermal annealing, where the laser annealing or the rapid thermal annealing drives boron dopants, which comprises boron oxide, into the silicon-based 3D substrate via an auxiliary layer.

The invention discloses a radiation refrigeration coating as well as a preparation method and application thereof, and relates to the technical field of material preparation. The preparation method comprises the following steps: sintering hexagonal boron nitride, and removing boron oxide to obtain modified boron nitride powder; the preparation method comprises the following steps: reacting supramolecular polysiloxane with methoxypolyethylene glycol to obtain hyperbranched polysiloxane; the modified boron nitride powder and hyperbranched polysiloxane are subjected to hydrolysis on boron nitride under the alkaline condition, and silane modified boron nitride is obtained; the silane modified boron nitride is added into a polyurethane coating matrix to form the radiation refrigeration coating. The silicon-oxygen modified group is introduced to the surface of the boron nitride, so that the interaction between the boron nitride and the coating group is greatly improved, and the stability of the coating is improved; the coating can be cured under different environmental conditions, and construction on power equipment is facilitated; the formed radiation refrigeration coating is high in sunlight reflectivity, high in mid-infrared emissivity and high in heat dissipation capacity for power equipment.

The invention relates to the technical field of refractory materials, in particular to an antioxidant and application thereof in steel ladle slag line bricks, and the antioxidant comprises a Si / SiC multiphase material, modified nano Al2O3 and CaF2; the ladle slag line brick comprises an antioxidant, fused magnesite, crystalline flake graphite and phenolic resin. Si-SiC compound waste is subjected to magnetic separation and acid pickling, then a SiO2 passivation layer is formed through pre-oxidation, moisture and air in the storage period are isolated, and a titanate coupling agent is introduced to improve the wettability and compatibility with phenolic resin. P2O5 released by phosphate on the surface of the modified nano Al2O3 at a high temperature reacts with alkali (earth) metal migrated to a SiO2 oxide layer to prevent the alkali (earth) metal from forming a low-melting-point eutectic substance, CaF2 reacts with SiO2 along with temperature rise, a passivation layer is broken, internal Si and SiC are directly exposed, and boron oxide of the modified nano Al2O3 remarkably reduces activation energy and a temperature threshold value of the reaction of CaF2 and SiO2.

The invention relates to the technical field of preparation of high-purity boron oxide, and discloses a purification method of high-purity boron oxide and a device thereof, and the purification method comprises the following steps: step 1, mixing crude boron oxide with a liquid metal alloy, and dissolving metal impurities through gradient temperature control; 2, applying ultrasonic treatment to the mixed system, introducing a vortex field, and stripping impurities on the surface of the boron oxide; 3, a liquid metal phase and a boron oxide solid phase are separated through cooperation of a magnetic field and a pulse high-voltage electrostatic field; 4, non-metal ion impurities are removed through a gradient porous ceramic adsorption bed; and step 5, melting boron oxide in vacuum and carrying out gradient cooling crystallization. By adopting the technical scheme of a Ga-I n-Bi-Er quaternary liquid alloy system, the technical effect of selective targeted removal of metal impurities is achieved, and compared with a liquid metal system depending on single phase solubility difference in the prior art, the defect that efficient chelating and dynamic settling separation of the impurities cannot be achieved at the same time is overcome.

The invention relates to the technical field of electronic glass fiber materials, and particularly discloses a corrosion-resistant low-dielectric glass fiber and a preparation process thereof. A preparation process of corrosion-resistant low-dielectric glass fibers comprises the following steps: S1, uniformly mixing glass fiber raw materials, melting, clarifying, homogenizing, cooling, and carrying out wiredrawing treatment to obtain glass fiber precursors; and S2, sequentially carrying out plasma treatment and impregnating compound treatment on the glass fiber precursor, drying and curing to obtain the corrosion-resistant low-dielectric glass fiber, silicon dioxide, aluminum oxide, magnesium oxide, boric oxide, calcium fluoride, tin oxide, sodium oxide, potassium oxide and rare earth oxide are used as glass fiber raw materials, and the rare earth oxide is a mixture of gadolinium oxide, cerium oxide and samarium oxide. The obtained glass fiber has excellent low dielectric property and corrosion resistance, and has a wide market prospect.

The invention relates to the technical field of silicon-carbon negative electrodes, in particular to a silicon-carbon negative electrode precursor material, a silicon-carbon negative electrode material and a preparation method of the silicon-carbon negative electrode precursor material. Preparing a porous carbon material; performing vapor deposition on a silicon source on the porous carbon material to obtain a silicon / porous carbon material; putting boron oxide and the silicon / porous carbon material into a ball milling tank according to a mass ratio of (1-5): (80-200), and carrying out ball milling for 1-3 hours to obtain a silicon-carbon negative electrode precursor material; according to the silicon-carbon negative electrode precursor material, the silicon-carbon negative electrode material and the preparation method of the silicon-carbon negative electrode material, the porous carbon material is prepared from the biomass carbon material, the silicon element is deposited on the porous carbon material, the boron element is doped on the porous carbon material, and the obtained silicon-carbon negative electrode material has excellent capacity and capacity retention rate and high electrochemical stability.

The invention belongs to the technical field of electrode material preparation, and particularly relates to a preparation method of boric acid-assisted low-temperature sintered porous aluminum foil. The preparation method comprises the following steps: dispersing aluminum powder, boric acid and binder raw materials in a solvent to form dispersed slurry; and coating a matrix with the dispersed slurry, drying, sintering at 450-600 DEG C under protective gas, reacting boric acid with aluminum oxide on the surface of the aluminum powder to form low-melting-point aluminoborate, reducing the sintering temperature, promoting aluminum atom diffusion, increasing sintering neck formation, and sintering to obtain the porous aluminum foil. Boron oxide generated by decomposition of boric acid is added to react with aluminum oxide to form low-melting-point aluminoborate, the sintering liquidus temperature is reduced, aluminum atom diffusion is promoted, and low-temperature sintering at 450-600 DEG C is achieved. The aluminum powder sintered foil is suitable for energy storage devices such as an aluminum electrolytic capacitor and a lithium ion battery, has the advantages of low-temperature energy conservation, high porosity and strong mechanical property, and solves the problems of aluminum oxide obstruction and high high-temperature energy consumption of the traditional aluminum powder sintered foil.

The application discloses a hydrodesulfurization catalyst and a preparation method and application thereof. The hydrodesulfurization catalyst comprises a carrier and a second active metal component; the carrier comprises a first active metal nitride, a first active metal carbide, boron oxide and aluminum oxide; wherein the molar ratio of the first active metal nitride to the first active metal carbide, in terms of the first active metal, is 1:0.15-0.25. The hydrodesulfurization catalyst has the characteristics of good macromolecular diffusion performance, strong desulfurization capacity and good carbon deposition resistance. The hydrodesulfurization catalyst is particularly suitable for a residual oil hydrodesulfurization treatment process and has good desulfurization activity and stability.

The invention discloses a positive electrode active material, a secondary battery and a power utilization device, and belongs to the technical field of batteries, the positive electrode active material comprises a core material and a carbon coating layer arranged on the outer surface of the core material, the core material comprises a positive electrode material and boron oxide, the boron oxide is at least partially distributed among pores of the positive electrode material, and meanwhile, the positive electrode material contains the manganese-iron-lithium oxide with specific doping elements, so that the lithium ion secondary battery has stable electrochemical capability in a high-temperature and high-voltage state, and therefore, the cycling stability can be effectively improved, the internal resistance can be reduced, gas production can be inhibited, and the service life of the lithium ion secondary battery can be prolonged. The volume expansion rate is reduced.

The invention discloses boron sol modified phenolic aerogel and a preparation method thereof, and belongs to the technical field of aerogel materials. In order to solve the problem that boron modification of phenolic aerogel is limited by active sites, boron sol and phenolic sol are mainly adopted to be blended, and a boron oxide-phenolic quasi-dual-network structure is formed through curing and drying processes. The molten boron oxide can be used for coating the carbon skeleton in the material ablation process, the residual carbon rate is increased, the oxidation resistance is enhanced, and the material can be applied to an ablation thermal insulation material in a thermal protection system.

The invention discloses a high-strength ceramic insulator processing method, which is characterized in that diatomite and silicon powder are added into a blank of an insulator, the diatomite has good adiabaticity, the service life of the ceramic insulator can be prolonged, the performance of the ceramic insulator can be improved, and meanwhile, pores of the diatomite can be filled with silicon powder particles so as to reduce the porosity of the diatomite; on the other hand, the surface of the green body is subjected to ozone treatment during glazing, so that a glassy-state-like # imgabs0 # film and more hydrophilic groups # imgabs1 # can be generated on the surface of the green body to facilitate glazing, the bonding strength of the glaze and the green body is improved, and the strength of the insulator is improved; meanwhile, soluble impurities in kieselguhr in the glaze are removed through weak acidity of boric acid, boric oxide is generated through thermal decomposition reaction of boric acid, and boric oxide can react with aluminum oxide in the glaze to generate aluminum borate whiskers in the firing process after a green body is glazed; the aluminum borate whisker can be used as a reinforcing agent in the firing process of the insulator, so that the strength of the insulator is further improved.

The invention specifically discloses a method for determining the content of chromium, silicon, phosphorus and titanium in high-carbon ferrochrome, which adopts a melting sample preparation-X fluorescence spectrometry method for determination, and comprises the following steps: (1) sample preparation: uniformly mixing a sample with lithium hydroxide, boron oxide, strontium nitrate and other oxidants, covering with lithium tetraborate, setting a melting procedure, and determining the content of chromium, silicon, phosphorus and titanium in the high-carbon ferrochrome by controlling the heating rate, segmentally controlling the temperature and preserving the heat; the full-automatic completion of pre-oxidation and melting can be realized, and the homogeneous glass fuse piece meeting the analysis requirement is obtained; (2) preparing a calibration working curve sample: selecting various national standard samples to establish a calibration working curve; and (3) determining by using an X-ray fluorescence spectrophotometer. According to the method provided by the invention, a flux crucible does not need to be additionally prepared for early-stage sample treatment, complete sample melting is ensured, the platinum-yellow crucible is prevented from being etched, the homogeneous glass fuse piece meeting the analysis requirement is obtained, and the precision and the accuracy of the result both meet the use requirement.

The invention relates to the technical field of modified carbon graphite materials, and particularly discloses an antioxidant modified carbon graphite material and a preparation method thereof, the antioxidant modified carbon graphite material comprises the following raw materials by weight: 30-34 parts of medium temperature pitch, 4-6 parts of modified silica sol and 10-12 parts of artificial graphite powder; from two aspects, firstly, the aluminum dihydrogen phosphate and the boric acid aqueous solution are added, the aluminum dihydrogen phosphate can promote the asphalt to form a denser and firmer glassy carbon structure during carbonization, and phosphorus pentoxide generated by decomposition of the aluminum dihydrogen phosphate and boron oxide generated by dehydration of boric acid can generate a glass phase with an anti-oxidation effect; secondly, core-shell particles are added, a shell layer of the core-shell structure is an aluminum hydroxide structure generated by hydrolyzing aluminum nitrate nonahydrate, and an inner core is epoxidized nano silicon carbide; through the synergistic effect of the two, the mechanical property and the oxidation resistance of the carbon-graphite material are improved.

The present invention discloses a low-brittle glass substrate and a preparation process thereof, belonging to the field of glass substrate preparation. The raw material components of the glass substrate include base silicon dioxide, surface amino-treated silicon dioxide, aluminum oxide, boron oxide, modified titanium dioxide, sodium oxide, magnesium oxide, and cerium oxide. The glass substrate of the present invention has low brittleness, and the ratio of Vickers hardness to fracture toughness is used as a brittleness index, the Vickers hardness is 6.65-6.70GPa, and the fracture toughness is 3.54-3.77MPa / m 1 / 2 , the brittleness index is 1.78-1.87.

The invention belongs to the technical field of glass materials, and particularly relates to black high-hardness heat-resistant microcrystalline glass ware and a preparation method thereof. Silicon dioxide, sodium oxide, aluminum oxide, potassium oxide, boric oxide, magnesium oxide, calcium oxide, zinc oxide, sodium fluosilicate, iron oxide, manganese oxide, fluorite, lithium oxide, metal manganese coated with silicon dioxide and schorlite are used as raw materials, and the black high-hardness heat-resistant microcrystalline glass ware is prepared through the processes of high-temperature melting and mixing, compression molding, annealing and tempering. The black high-hardness heat-resistant microcrystalline glass ware is excellent in performance, high in hardness and good in heat resistance, and has potential market value.