68results about How to "Suitable coefficient of thermal expansion" patented technology

The invention discloses luminescent glaze for enamel painted porcelain and a preparation method and application thereof. The luminescent glaze for enamel painted porcelain comprises basic glaze for the enamel painted porcelain and a protective-glaze luminescent material, wherein the protective-glaze luminescent material is prepared by firstly mixing and then repeatedly braking the flux for the protective-glaze luminescent material and a luminescent material, and the flux for the protective-glaze luminescent material comprises the following components in percentage by weight: 42-48 percent of SiO2, 3-7 percent of SrO, 15-21 percent of B2O3, 0.2-1.2 percent of Al2O3, 3-7 percent of Li2O, 2-7 percent of Na2O, 1-3 percent of K2O, 0.6-3.8 percent of metal fluoride, 2-3.5 percent of P2O5, 0-0.5 percent of Ta2O3, 0-1 percent of Nb2O5, 0-0.5 percent of ZrO2, 0-3 percent of CeO2, 0-0.5 percent of La2O3, 0-2 percent of Y2O3, 5-10 percent of ZnO, and 0-5 percent of MgO. According to the luminescent glaze for the enamel painted porcelain provided by the invention, the thermal stability and luminescence properties of the luminescent material can be guaranteed so as to improve the luminance and luminous time of the prepared painted porcelain after irradiation, while the various characteristics of the traditional enamel painted porcelain can be maintained.

The invention provides a novel preform body for bone porcelain and a preparation process of the preform body. The novel preform body for bone porcelain comprises the following components in percentage by weight: 50-55% of bone meal, 24-28% of kaolin, 9-11% of quartz, 8-10% of feldspar, 0.38-0.52% of lithium chinastone, 0.8-1.6% of zircon sand and 0.4-0.8% of nano-aluminum oxide. The preparation process comprises the following steps: mixing various ground materials with proper granularity to prepare the preform body, and calcining once again before the bone meal is mixed. The preform body prepared in the invention is good in thermal shock resistance, high in strength, uniform in structure, compact in toughness and excellent in overall performance.

The invention relates to a high-crystal mullite-iolite high-temperature industrial ceramic and a production method for the same. Raw materials comprise, by weight, 40-80 parts of main crystal phase materials, 20-60 parts of combined composite substrate materials and an appropriate amount of composite microcrystal nucleating agent. A roasting process of the production method includes a two-stage constant-temperature roasting method and a two-stage composite crystallization synthetic reaction characteristic enhancing process, wherein the two-stage constant-temperature roasting method includes the steps of performing constant-temperature heat preservation for 10-15 hours at the temperature of 200 DEG C, and performing constant-temperature heat preservation for 10-15 hours at the temperature of 500 DEG C; and the two-stage composite crystallization synthetic reaction characteristic enhancing process includes the steps of sintering for 10-15 hours under the ordinary pressure and at the temperature ranging from 1100 DEG C to 1150 DEG C, and sintering for 20-25 hours under the ordinary pressure and at the temperature ranging from 1420 DEG C to 1430 DEG C. A refractory product produced bythe method has the advantages of excellent oxidation resistance, high refractoriness, high usage temperature, low thermal expansion coefficient, high compression strength, hypobarism, excellent heat stability, anti-strip performance and high high-temperature bending strength. The process of the method has the advantages of simple process, low cost and suitability for mass production, and is applicable to preparing kiln furniture, industrial ceramics and structural materials.

The invention discloses nanooxide-doped red solder glass and a preparation method thereof. The nanooxide-doped red solder glass is characterized by comprising the following raw material components by molar percent: 35%-50% of P2O5, 20%-45% of ZnO, 0.1%-20% of B2O3, 1%-10% of Al2O3, 0.1%-10% of SiO2, 0.1%-10% of Na2O, 0.1%-10% of MgO, 0.1 %-5% of Li2O, 0.1%-4% of Fe2O3, 0.1%-4% of MnO2 and 0.1%-1% of colorant cuprous oxide. The preparation method comprises the following steps: mixing raw materials, and adding nanoalumina finally and mixing to prepare a mixture; putting a crucible into an electric furnace with the temperature of 1200-1400 DEG C, and preheating for 15 minutes; adding the mixture into the quartz crucible, melting at the melting temperature of 1200-1400 DEG C, and holding for 80 to 120 minutes; pouring the melted glass liquid into water or being ground into powder by a ball mill after tablet forming. The invention has the advantages of simple preparation process, convenient operation, high performance cost ratio and broad market development prospects.

The invention discloses a high temperature-resistant resistor ceramic composite material. The high temperature-resistant resistor ceramic composite material is prepared from barium titanate, zirconium dioxide, eucryptite, magnesium oxide, zirconium boride, hafnium diboride, lead zirconate, strontium carbonate, molybdenum disulfide, titania, yttrium oxide, calcium carbonate, thallium carbide, hafnium carbide, zirconium carbide, silicon nitride, zirconium oxide, polyvinyl alcohol, copper oxide, niobium pentoxide, tungsten trioxide, lead tetraoxide, alumina, silica and assistants. The invention also provides a preparation method of the high temperature-resistant resistor ceramic composite material. The high temperature-resistant resistor ceramic composite material has excellent high temperature resistance.

The invention discloses a non-lead low-fusing point glass of electronic slurry, which comprises the following parts: (1) necessary component: 30-55mol% P2O5, 20-55mol% ZnO, 2-10mol% Al2O3, 3-15mol% K2O, 0-1mol%Li2O, (2) adding component: 0-25mol% B2O3, 0-10mol% SiO2, 0-3mol%Fe2O3, 0-8mol%CuO, (3) stable component: not more than 30% two or more oxidizer compounds, wherein allocation of different components is adjusted to obtain the non-lead low-fusing point glass with bulking coefficient at 64-140X10-7/deg. c and the sealing temperature at 430-600 deg. c.

The invention belongs to the technical field of energy storage batteries and particularly relates to a high-temperature sealed electrode. The high-temperature sealed electrode comprises a negative electrode core, an upper transition ring, an insulating sleeve, a lower transition ring, a positive electrode cover plate, a salt-sealing partition and a salt-sealing groove, wherein the upper transition ring, the insulating sleeve, the lower transition ring, the positive electrode cover plate, the salt-sealing partition and the salt-sealing groove sequentially sleeve the middle of the negative electrode core from top to bottom; a negative current collector is also welded at the bottom of the negative electrode core; the salt-sealing partition is fixed at the lower end of the positive electrode cover plate; the salt-sealing groove is also fixed in the negative electrode core at the lower end of the salt-sealing partition; the lower end of the salt-sealing partition extends into a sealed salt in the salt-sealing groove; and sealing of the electrode is achieved through heating and solidifying the sealed salt. The invention further discloses a preparation method of the high-temperature sealed electrode. According to the high-temperature sealed electrode, corrosion of steam to solder can be prevented, cracking of a connection part of the sealed electrode caused by thermal stress is prevented, long-term insulated sealing in a high-temperature condition is achieved, the sealed electrode is compact in structure and the space volume of a liquid metal battery is effectively compressed.

The invention discloses a sealing glass added with nanometer aluminum oxide and the preparation method of the sealing glass. The sealing glass is characterized in that the mol percentages of raw material components are as below: 35 percent to 50 percent of P2O5, 20 percent to 45 percent of ZnO, 0.1 percent to 20 percent of B2O3, 1 percent to 10 percent of Al2O3, 0.1 percent to 10 percent of SiO2, 0.1 percent to 10 percent of Na2O, 0.1 percent to 10 percent of MgO, 0.1 percent to 5 percent of Li2O, 0.1 percent to 4 percent of Fe2O3, and 0.1 percent to 4 percent of MnO2; the preparation method is as below: mixing the raw materials, wherein the nanometer aluminum oxide is the last to be added and then mixed to prepare a mixture; placing crucible in an electric cooker with a temperature of 1,200 to 1,400 DEG C, and the preheating for 15 minutes; adding the mixture into quartz crucible, performing smelting at the temperature of 1,200 to 1,400 DEG C, and allowing the temperature to be kept for 80 to 120 minutes; pouring the smelted glass liquid into water or tabletting the glass liquid and then grilling the tablets into powder, or casting the glass liquid into sticks, poles, tablets, and other shapes needed during the sealing; performing test and package. The invention has the advantages of simple preparation process, convenient operation and high cost performance and has wide market development prospect.

The invention discloses a manufacture method of a solid insulating circuit device, which comprises the steps of: cleaning the surface of an electric conductor of a circuit device, preheating and then placing into a heated mould, and injecting a liquid epoxy resin composite material composed of silicon micropowder, epoxy resin and a curing agent into the mould; and taking a molded solid insulating circuit device blank from the mould after the epoxy resin composite material in the mould is cured, placing the blank into a baking oven for post-curing treatment, then carrying out sand blasting treatment on the surface of the blank except the part of the interface of the electric conductor to be insulated, coating a layer of conductive coating, carrying out evaporation treatment in the air, and then carrying out curing treatment in the baking oven to complete the manufacture of the solid insulating circuit device. Compared with the prior art, the invention can be used for effectively decreasing partial discharge values inside the solid insulating circuit device and surface inductive voltage of a product.

The invention provides a glass composition. The glass composition comprises the following components in percentage by mole: 55 to 80% of SiO2, 2 to 15% of B2O3, 0.5 to 10% of TiO2, 0.5 to 12% of ZnO,0 to 10% of Al2O3, 1 to 15% of Na2O and 1-12% of K2O. Through reasonable component design, the obtained glass composition has a proper thermal expansion coefficient, high ultraviolet light transmittance and excellent water resistance, acid resistance and alkali resistance, meets the requirements of large-caliber high-quality processing, and is suitable for the fields of semiconductor manufacturingand the like.

The invention discloses alkali-resistant aluminosilicate glass material and an application thereof. The glass is composed of the following components, in percentages by weight: 54-64% of SiO2, 13-20% of Al2O3, 0.4-5% of MgO, 0.5-9% of CaO, 0.1-2% of BaO, 4-10% of ZrO2, 0.5-5% of TiO2, 0.5-5% of Ta2O5, and 0.1-5% of Y2O3. The alkali-resistant aluminosilicate glass provided by the invention has the advantages of a stable structure, good chemical stability, high mechanical strength and high transmittance, and does not contain elements harmful to the environment, such as lead, arsenic and cadmium, the glass has less corrosion even the glass is used in a high-temperature high-pressure environment for a long time, and the glass has excellent alkali resistance, and is suitable for use in glass of a high-temperature high-pressure liquid level meter observation window.

The composition of a microlite glass material for sealing with 4J29 kovar alloy is Li₂O-ZnO-Al₂O₃-SiO₂; a crystal nucleating agent is P₂O₅; a clarifying agent is Sb₂O₃; raw materials are mixed according to a ratio to prepare a uniform batch; the batch is put into a corundum crucible and melted at a temperature between 1350 and 1400 DEG C in a high-temperature electric cooker for three hours; then the batch is injected and molded. At a constant temperature of about 520 DEG C, anneal is done for 1 hour; in the end, the batch is processed to be microcrystal. The present invention uses the complementary principle of thermal performances; with the composition design and crystallization process of base glass, the Li₂Al₂Si₃O₁₀ main crystal phase of low heat expansion coefficient or negative thermal expansion coefficient can be separated in the base glass. The present invention uses a little P₂O₅ as the crystal nucleating agent; the beta_II'-LZS is first separated when the base glass is micro-crystallized; then a plurality of Li₂Al₂Si₃O₁₀ crystal phase are separated to get the microlite glass; a large amount of tiny dendrite are mutually connected to form a network; thus the microlite glass has a higher mechanical strength.

The invention relates to a phosphate controlled-release fertilizer with a sterilizing effect and a preparation method thereof. The fertilizer is prepared from the following raw materials by molar percent: 30-60% of P2O5, 15-40% of K2O, 1-15% of CaO, 1-10% of MgO, 1-10% of Fe2O3, 1-10% of MnO2, 1-10% of CuO, 0.1-10% of Y2O3, 0.1-10% of Sm2O3 and 0.1-10% of La2O3, wherein the sum of P2O5 and K2O is 50%-80%, and the sum of Y2O3, Sm2O3 and La2O3 is 2%-7%. The preparation method comprises the following steps: weighing, mixing, smelting, pouring, ball-milling and packaging. The fertilizer has the characteristics of less dosage and high and long fertilizer efficiency, is not easy to run off, cake and deteriorate, and is convenient for application, storage and transportation; and the required release amount is achieved through controlling the dissolution rate and granularity of a glass fertilizer.

The invention discloses a lead-free glass frit for the dielectric layer of a plasma display, and the glass frit comprises the following raw materials according to the weight percentage: 30%-50% of Bi2O3, 5%-40% of B2O3, 5%-30% of BaO, 0.1%-10% of Al2O3, 0.1%-10% of ZnO, 0.1%-10% of MgO and0.1%-5% of La2O3. The invention has the advantages that the glass frit belongs to environment-friendly materials; various performances are excellent; the cost performance is high; the glass frit has suitably and easily adjusted thermal expansion coefficient and proper sintering temperature, and also has good chemical stability and high dielectric strength; the competitive power is very strong in lead-free performance and cost performance; and the glass frit has wide market development prospect.

The invention relates to an inorganic adhesive used for slurry, and a preparation method thereof. The inorganic adhesive is composed of the following raw materials in percentage by weight: 20-40% of SiO2, 5-20% of Al2O3, 5-30% of CaO, 1-20% of B2O3, 1-20% of BaO, 1-10% of ZnO, 1-10% of V2O5, 0.1-5% of CuO, 0.1-5% of Li2O, 0.1-2% of Sb2O3 and 0.1-1% of Co3O4. The preparation method comprises the following processes: weighing, mixing materials, melting, tabletting, ball-milling and screening. The inorganic adhesive has the advantages of complete removal of gas, high airtightness, and high adhesive force.

The invention discloses a preparing method of an energy-saving LED lamp lampshade material. The preparing method comprises the steps of 1, preparing carbonic ester-based polycondensation monomers, 2,preparing polycondensates, 3, preparing addition polymers, and 4, shaping the energy-saving LED lamp lampshade material. The invention further discloses the energy-saving LED lamp lampshade material prepared by adopting the preparing method. The energy-saving LED lamp lampshade material is good in comprehensive performance, not fragile, excellent in aging resistance, abrasion resistance, toughness, high temperature resistance and flame resistance, good in light transmittance, small in transmittance lumen depreciation, even in fog face and long in service life.

The invention discloses nanooxide-doped green solder glass and a preparation method thereof. The nanooxide-doped green solder glass is characterized by comprising the following raw material components by molar percent: 35%-50% of P2O5, 20%-45% of ZnO, 0.1%-20% of B2O3, 1%-10% of Al2O3, 0.1%-10% of SiO2, 0.1%-10% of Na2O, 0.1%-10% of MgO, 0.1 %-5% of Li2O, 0.1%-4% of Fe2O3, 0.1%-4% of MnO2 and 0.1%-1% of colorant chromium oxide. The preparation method comprises the following steps: mixing raw materials, and adding nanoalumina finally and mixing to prepare a mixture; putting a crucible into an electric furnace with the temperature of 1200-1400 DEG C, and preheating for 15 minutes; adding the mixture into the quartz crucible, melting at the melting temperature of 1200-1400 DEG C, and holding for 80 to 120 minutes; pouring the melted glass liquid into water or being ground into powder by a ball mill after tablet forming. The invention has the advantages of simple preparation, convenient operation, high performance cost ratio and broad market development prospects.

The invention relates to the technical field of high-temperature coatings, in particular to novel environment-friendly glass powder added with nano-metal oxide and used for a high-temperature coatingand a preparation method thereof. In the novel environment-friendly glass powder, according to mass percent, Bi2O3 is 60-85%, ZnO is 5-20%, B2O3 is 5-30%, Sb2O3 is 0.5-5%, SiO2 is 1-10%, Al2O3 is 1-10%, TiO2 is 0.5-3%, CaO is 0.5-8%, MgO is 0.5-10%, BaO is 0.5-10%, Na2O is 0-5%, K2O is 0-5%, Li2O is 0-5%, Y2O3 is 0.5-5%, SrO is 0.5-5%. The low-temperature lead-free environment-friendly glass powder does not contain lead oxide, has low softening point, good adhesion, good chemical stability and strong moisture resistance, and can be used for high-temperature resistant coatings.

The invention discloses environment-friendly high-refractive-index ultraviolet-permeable glass and a preparation method thereof. The ultraviolet-permeable glass is prepared from the following components in percentage by weight: 30-40% of SiO2, 0.2-15% of B2O3, 0-5% of MgO, 6-10% of CaO, 0-5% of SrO, 2-10% of BaO, 1-5% of ZnO, 31-40% of La2O3, 0.01-2% of Nb2O5, 0.01-2% of Ta2O5 and 0.01-5% of CaF2.the preparation method comprises the following steps: carrying out iron removal treatment on the main raw materials, then weighing the high-purity raw materials according to weight percentages of thecomponents, carrying out ball-milling and uniform mixing to prepare a mixture, heating the mixture, then carrying out mixing, stirring the molten glass liquid for multiple times in a melting processof the glass mixed material, then taking out the glass molten liquid out from a furnace and quickly pouring the glass molten liquid into a preheated heat-resistant steel mold to obtain glass with a specified specification by pouring, then putting the glass into an annealing furnace for annealing treatment, and carrying out cooling to obtain the environment-friendly high-refractive-index ultraviolet-permeable glass material. The ultraviolet-permeable glass has the advantages of environmental protection, high refractive index, high ultraviolet transmittance, appropriate thermal expansion coefficient, good chemical stability and simple preparation method, and has a wide market application prospect.