10results about How to "Lower melting temperature" patented technology

The invention discloses a matte glaze and a preparation method thereof. The matte glaze comprises the following components by weight: 1-5 parts of zinc oxide, 5-15 parts of barium carbonate, 0-15 parts of zirconium silicate, 10-25 parts of potassium feldspar, 10-20 parts of kaolin, 5-15 parts of calcite, 5-15 parts of calcined talcum powder, 20-35 parts of a matte frit and 0.5-1 part of an additive. Specifically, the matte frit comprises the following components by weight: 30-50 parts of SiO2, 15-20 parts of Al2O3, 0.01-0.5 part of Fe2O3, 3-10 parts of CaO, 0.5-5 parts of MgO, 1-5 parts of K2O, 3-10 parts of Na2O, 3-10 parts of ZnO, 0.1-1 part of B2O3 and 10-25 parts of BaO. By introducing the matte frit, the melting temperature of the formula is lowered, the firing range of the formula isbroadened, and the glaze texture achieves a fine matte effect.

The application belongs to the field of engineering plastics, and particularly relates to long-chain polyamide resin with easy processing and high tensile property, and a preparation method and application thereof. The long-chain polyamide resin comprises the following raw material components: component a: aliphatic carboxylic acid compound component; component b: polyamine compound component; and component c: a compound with a structure shown in the following formula (1), wherein n and m can be any number between 1 and 10. The long-chain polyamide resin of the application introduces structural diacid with an asymmetric benzene ring structure, utilizes the asymmetric structure to reduce the crystallinity of the material, and introduces the benzene ring structure to improve the mechanical property of the polyamide material, so that the low processing temperature is realized from the polyamide material component itself, the energy consumption is reduced, and the mechanical property of the polyamide material is ensured. The problem that the processing temperature and mechanical property of the polyamide material and the processing energy consumption are difficult to be considered in the prior art is solved.

The application discloses a white light emitting phosphate glass material based on divalent tin ions and a preparation method thereof, and belongs to the technical field of luminescent glass. The white light emitting phosphate glass material based on divalent tin ions is prepared from raw materials including 2.5-25% of SnO, 15-37.5% of ZnO, 20% of ZnCl2 and 40% of P2O5 in terms of mole percentage; and a reducing agent Si3N4 can be further added when the white light emitting phosphate glass material is prepared. The phosphate glass prepared in air can promote the luminescence of Sn 2+ ; meanwhile, the introduction of the reducing agent can effectively control the valence state of Sn ions, and the phosphate glass has excellent comprehensive performance, a low glass transition temperature, good mechanical performance and thermal stability, and is suitable for white light LED lighting and display devices.

The invention discloses a preparation method of lead-free metallic luster glaze, which is characterized in that a formula system is constructed by introducing lead-free raw materials such as calcium borate frits and recycling steel slag, and coloring ions (Co < 2 + >, Fe < 3 + >, Mn < 2 + > and the like) are promoted to be uniformly distributed in a network structure, so that a glaze layer is endowed with the characteristics of environmental protection, high glossiness and stable color. The production cost is effectively reduced, the remarkable problems of the traditional lead-containing glaze in the aspects of environmental protection and safety are effectively solved, and the lead-containing glaze can be widely applied to the fields of art, daily use and architectural ceramics.

The present application relates to the technical field of glass production, and provides a mixing method for improving the temperature of glass production mixture, which is applied to a mixer with a stirring cavity and comprises the following steps: S1, starting the mixer to sequentially perform dry mixing and wet mixing on glass raw materials; S2, when entering the wet mixing stage, a steam supply unit is opened, so that high-temperature steam starts to be introduced into the stirring cavity of the mixer; and during the whole duration of the wet mixing stage, the steam supply unit is kept in an opened state; S3, when the wet mixing stage reaches a preset duration of the system, the steam supply unit is closed, and the introduction of high-temperature steam is stopped; and when the wet mixing stage ends, the temperature of the material is improved from an initial value to not less than a preset target temperature, thereby effectively solving the problem that the mixing temperature is substandard in a low-temperature environment. The present application also provides a mixing system for realizing the method, which can significantly improve the mixing uniformity and reaction activity, and has the advantages of precise temperature control, energy saving and high efficiency.

The invention discloses a yellow phosphorus production method based on a multi-element system additive and process control. The yellow phosphorus production method comprises the following steps: S100, preparing raw materials; s200, a raw material pretreatment procedure; s300, burdening and mixing: mechanically mixing the core raw material with the multi-element system additive; s400, an electric furnace smelting procedure: feeding the furnace charge into an electric furnace, and carrying out carbon thermal reduction reaction to generate yellow phosphorus-containing steam; s500, a condensation and collection process: changing the yellow phosphorus vapor into a liquid state through a condensation system, and collecting the yellow phosphorus vapor; wherein the multi-element system additive comprises a fluxing agent, a reaction accelerant and a structure regulator; the method further comprises a process control step, wherein the adding amount of the multi-element system additive is controlled and adjusted through closed-loop feedback based on monitoring data. According to the method, by introducing a multi-element system additive and optimizing process control, the production energy consumption is reduced to a certain extent and the furnace condition stability is improved while the phosphorus reduction rate is increased and the residual phosphorus in the slag is reduced.

The invention provides a superfine dispersion aluminum-molybdenum intermediate alloy for an aluminum alloy and a preparation method of the superfine dispersion aluminum-molybdenum intermediate alloy. The aluminum-molybdenum intermediate alloy provided by the invention comprises the following components in percentage by mass: 4.5-5.5% of Mo, less than or equal to 0.10% of Si, less than or equal to 0.20% of Fe and the balance of Al, the second phase particle size of the microscopic structure is less than 50 microns, and is reduced by more than 60% compared with that of a product prepared by a conventional doping method; according to the test of an AA TP-2 method, the sufficient dissolving time of the aluminum-molybdenum intermediate alloy is within 10 minutes, and the dissolving speed of the aluminum-molybdenum intermediate alloy is increased by more than 50% compared with that of a conventional doping method. The superfine dispersion aluminum-molybdenum intermediate alloy provided by the invention is prepared by adopting a gradient component control method; compared with a traditional molybdenum and aluminum opposite doping method, the obtained aluminum-molybdenum intermediate alloy is remarkably improved in structure and high in dissolution rate; and the quality defects of composition segregation, coarse structure and the like caused by insufficient dissolution of the second phase after the molybdenum element is added are avoided.

The invention discloses NAS microcrystalline glass powder and a preparation method thereof, and relates to the technical field of microcrystalline glass. The preparation method comprises the following steps: providing sol, wherein the sol is prepared from the following components in parts by mass: 12 to 15 parts of aluminum silicate, 7 to 9 parts of NaOH, 60 to 70 parts of water, 1.0 to 5.8 parts of nano gas-phase SiO2 and 1 to 1.3 parts of TiO2; and drying the sol, heating the obtained dry gel to 750-850 DEG C at a heating rate of 3-5 DEG C / min, carrying out heat preservation for 0.5-1 h, cooling to room temperature, and carrying out crushing and ball milling on the obtained NAS glass ceramic block to obtain the NAS glass ceramic powder. The sol-gel combined one-time low-temperature sintering and recrystallization process is adopted, the energy consumption is low, the steps are simple, and the prepared NAS microcrystalline glass is uniform in component, high in density, crystallinity and mechanical strength and low in thermal expansion coefficient and dielectric loss.

The application discloses a kind of titanium alloy hydrogen content detection's anti-hydrogen absorption sample preparation and detection method, belong to metallurgical material detection technical field.The application includes: titanium alloy sample is processed into block, after ultrasonic cleaning in acetone is dried in humidity ≤24% environment, and in 4 hours detection or vacuum sealing preservation;Select tin sheet as dissolvent, tin sheet and sample mass ratio is 1:2;Graphite crucible is carried out empty burning pretreatment;Inert gas melting thermal conductivity method detection parameter is set as analysis power 2.7KW, degassing power 4.5KW, analysis time 120 seconds, cooling water temperature ≤28 ℃;Tin sheet is placed in the bottom of crucible, after adding sample, detection is carried out.The application is through anti-hydrogen absorption combined process, tin sheet high-efficiency fluxing and crucible empty burning pretreatment, effectively suppresses titanium alloy hydrogen absorption, realizes sample complete melting, eliminates crucible residual interference, the relative standard deviation of detection result is ≤3%, significantly improves detection accuracy and repeatability, applicable to the precision quality control of hydrogen content in titanium alloy and special steel.

This invention relates to the field of architectural ceramics technology, disclosing a titanium sphene crystal frit, its preparation method, and its application. The raw materials include kaolin, titanium dioxide, quartz, potassium feldspar, calcite, and wollastonite. By pre-firing the titanium sphene crystal frit using this formula, the titanium sphene crystals are pre-dissolved in the glass phase. During the subsequent glaze firing process at 1200℃, the titanium sphene crystals melt again and precipitate a second time, resulting in an opaque glaze layer. This secondary crystallization enhances the chemical stability of the titanium sphene crystal frit during subsequent glaze firing, leading to a more stable increase in the solar reflectance of the fired glaze. This solves the problem of unstable reflectivity in glazes when directly using titanium sphene powder or combining it with titanium dioxide and titanium frit to directly form titanium sphene crystals during glaze firing.