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113results about How to "The process steps are simple" patented technology

Steady-state regulation and control method for anthocyanin in freshly squeezed fruit juice and freshly squeezed fruit juice

The invention belongs to the field of food, and discloses a steady-state regulation and control method for anthocyanin in freshly squeezed fruit juice, which is characterized in that litchi pomace extract is added into the freshly squeezed fruit juice to improve the retention rate of total anthocyanin in the freshly squeezed fruit juice in the storage process. According to the method, the litchi pomace extract is used for inhibiting anthocyanin degradation, and the total degradation rate of anthocyanin is lower than 10% within 3 months. Meanwhile, the invention further discloses the freshly squeezed fruit juice obtained based on the method.
Owner:SERICULTURAL &AGRI FOOD RESEARCH INSTITUTE GUANGDONG ACADEMY OF AGRICULTURAL SCIENCES +2

Method of manufacturing helical baffles

The application discloses a manufacturing method of a spiral baffle plate, which adopts a casting process to integrally form a spiral baffle plate unit, and then splices the integrally formed spiral baffle plate unit to form a large-diameter thin-wall spiral baffle plate which is radially continuous; and heat exchange pipe holes on a plate body of the spiral baffle plate unit are integrally formed in the casting process, and the plate body of the spiral baffle plate does not need to be further opened to form the heat exchange pipe holes. Compared with the production and processing method of the existing spiral baffle plate, the method simplifies the process steps, greatly improves the production efficiency of the spiral baffle plate, and is particularly suitable for manufacturing a spiral heat exchange plate with a small central hole or even without a central hole, and has small operation difficulty, short time consumption and high qualified rate.
Owner:WUHAN GUOKONG SCI & TECH CO LTD

Method for extracting diatom high-viscosity extracellular polysaccharide and application thereof

The application belongs to the technical field of water biological treatment, and particularly relates to a method for extracting high-viscosity extracellular polysaccharides of diatom and application thereof. The method comprises weak acid / weak base buffer system cyclic regulation and ultrasonic-assisted sodium bicarbonate system mild extraction. The weak acid / weak base buffer system cyclic regulation is a cycle of acid stimulation-recovery period-alkali stimulation, and the diatom precipitate is cyclically treated to induce the diatom to secrete extracellular polysaccharides with stable structure and acid and alkali resistance. The ultrasonic-assisted sodium bicarbonate system mild extraction is ultrasonic treatment of the diatom precipitate to efficiently release the extracellular matrix under mild conditions. The extracted extracellular polysaccharides have high molecular integrity, stable structure, significantly improved functional group retention rate, and can maintain stable adhesion performance in acid and alkali environments. The method solves the problems of poor structural integrity of the extracted diatom extracellular polysaccharides, inability to retain adhesion activity and generally insufficient performance in the prior art.
Owner:SANYA INST OF OCEANOGRAPHY OCEAN UNIV OF CHINA

A method for continuous multistage vacuum distillation purification of metallic selenium

ActiveCN118387840Breduce pollutionavoid cooling effect
This invention discloses a method for purifying metallic selenium through continuous multi-stage vacuum distillation: S1: Crude selenium powder is placed in a graphite crucible, the temperature of the crucible heater is set to 350-500℃, the temperature of the temperature-controlled heater is set to 250-350℃, and the vacuum degree of the distillation apparatus is controlled to 0.1-10 Pa for first-stage vacuum distillation; S2: The temperature of the crucible heater is set to 200-300℃, the temperature of the temperature-controlled heater is set to 600-900℃, and the vacuum degree of the distillation apparatus is controlled to 0.1-10 Pa for second-stage vacuum distillation. This invention, by selecting and controlling the temperatures of the crucible heater and the temperature-controlled heater during the purification process, enables continuous multi-stage vacuum distillation to purify metallic selenium. This avoids the need for multiple heating and cooling cycles and multiple material handling processes required in traditional methods, reducing energy consumption and pollution caused during handling. The process steps are simple, and the overall process time is significantly shortened.
Owner:CENT SOUTH UNIV

A method for preparing gallium oxide with enhanced ultraviolet absorbance and gallium oxide material prepared by the method

ActiveCN116590660BEnhanced UV AbsorbanceEnhanced UV absorbing propertiesFinal product manufactureVacuum evaporation coatingUv absorbanceSputtering
This application provides a method for preparing gallium oxide (GaO) with enhanced ultraviolet absorbance and a GaO material prepared according to this method. First, a GaO thin film capable of generating ultraviolet absorption is grown on a substrate by magnetron sputtering. The GaO thin film is then annealed. Next, a copper thin film is grown on the GaO thin film by magnetron sputtering, followed by rapid annealing, causing the copper film to crack into copper nanoparticles under heat. This preparation method utilizes copper nanoparticles to enhance the ultraviolet absorption performance of GaO. The process steps are simple and easy to operate, thus effectively reducing the preparation cost. Furthermore, the GaO material prepared by this method shows a significant improvement in ultraviolet absorbance.
Owner:GUILIN UNIV OF ELECTRONIC TECH

A method for preparing 3.5-valence vanadyl sulfate electrolyte by gas-based reduction of ammonium polyvanadate

The application provides a method for preparing 3.5-valence vanadyl sulfate electrolyte by reducing ammonium polyvanadate with a gas, which comprises the following steps: (1) ammonium polyvanadate is reduced and calcined by a reducing gas to obtain vanadium oxide; the vanadium oxide contains V4O7; the reducing gas comprises a mixed gas of NH3, CO and H2; (2) a mixed sulfuric acid solution and the vanadium oxide are subjected to a dissolution reaction, and vanadium adjustment is performed to obtain 3.5-valence vanadyl sulfate electrolyte. The process is simple and easy to implement, 3.5-valence vanadyl sulfate electrolyte product can be obtained from ammonium polyvanadate as raw material, the vanadium concentration is high, and the application prospect is wide.
Owner:INSTITUTE OF PROCESS ENGINEERING CHINESE ACADEMY OF SCIENCES +2

Composite pyrophosphate magnesium battery cathode material and preparation method and application thereof

ActiveCN118782776BImprove electrochemical performanceHigh first turn specific capacity
The application discloses a composite pyrophosphate magnesium battery positive electrode material and a preparation method and application thereof. The positive electrode material comprises a magnesium ion positive electrode material pyrophosphate and a carbon layer coated on the magnesium ion positive electrode material pyrophosphate. The chemical formula of the positive electrode material is Mg a Na b M 2+x / 2 N y , wherein M is one or more of Fe, V, Ti, Cr, Ni, Cu, Mn, Co, Nb, N is one or more of P2O7 4‑ , PO4 3‑ , SO4 2‑ , BO3 3‑ , SiO4 4‑ , 0
Owner:CHONGQING INST OF NEW ENE STOR MATER & EQUIP +1

Thermal neutron imaging detector based on TFT area array detector

ActiveCN224203094UOptimize optical signal transmissionImprove imaging resolutionMeasurement with scintillation detectorsMaterial analysis by transmitting radiationImage resolutionNeutron imaging
The utility model discloses a thermal neutron imaging detector based on a TFT area array detector, comprising a housing, a TFT substrate and a scintillator layer, the TFT substrate and the scintillator layer are both arranged in the housing, the TFT substrate comprises a substrate layer and an optical adhesive layer, the scintillator layer is arranged on the optical adhesive layer, and the scintillator layer is arranged on the substrate layer. The optical adhesive layer is matched with the scintillator layer to optimize optical signal transmission and improve imaging resolution; according to the TFT area array detector, the optical adhesive layer is arranged on the surface of the substrate layer of the TFT area array detector, and the optical adhesive layer is combined with the scintillator layer, so that optical signal transmission is optimized, and the imaging resolution is improved.
Owner:SINO-INNOVATION (MIANYANG) INTELLIGENT SCI & TECH LTD +2

A semi-volatile heavy metal adsorbent suitable for cement kiln co-processing and a preparation method thereof

ActiveCN116618008BEfficient physical adsorptionaids in chemical bindingOther chemical processesIncinerator apparatusAluminium hydroxideSorbent
The present application relates to the technical field of adsorbent, in particular to a semi-volatile heavy metal adsorbent suitable for cement kiln co-processing and a preparation method thereof.The preparation method comprises the following steps: step 1, mixing kaolin, calcium oxide and water to form a slurry, preparing a foaming agent into a foam, adding the foam into the slurry to stir, and obtaining a semi-dry high-calcium material; step 2, mixing kaolin, aluminum hydroxide and water to form a slurry, preparing a foaming agent into a foam, adding the foam into the slurry to stir, and obtaining a high-aluminum slurry; step 3, mixing and stirring the semi-dry high-calcium material and the high-aluminum slurry, and then performing die pressing forming and curing to obtain the semi-volatile heavy metal adsorbent.The present application successfully prepares an adsorbent material capable of efficiently adsorbing semi-volatile heavy metals in cement kiln co-processing, and can improve the environmental safety of waste co-processing in a cement kiln.
Owner:XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY

Confining liquid as well as preparation method and application thereof

The invention belongs to the technical field of biotechnology and protein determination, and particularly relates to confining liquid as well as a preparation method and application thereof. Modified bovine serum albumin and recombinant casein polypeptide are used as core components of the confining liquid, hydroxypropyl-beta-cyclodextrin, polyglycerol fatty acid ester and other auxiliary components are added, and the confining liquid is prepared through a specific technology. The modified bovine serum albumin and the recombinant casein polypeptide have a synergistic effect, so that active sites of the detection carrier can be efficiently sealed; the stabilizing agent and other components are supplemented, so that the stability and compatibility of the confining liquid are improved. The confining liquid is simple and convenient in preparation process, controllable in cost, suitable for various detection carriers such as elisa plates and nitrocellulose membranes, capable of reducing non-specific binding and improving detection sensitivity, and suitable for various biological detection scenes such as enzyme-linked immunosorbent assay.
Owner:广州市易可生物技术有限公司

A resin formulation method for removing trace impurities from coal chemical wastewater

This invention discloses a resin compounding method for removing trace impurities from coal chemical wastewater, specifically relating to the field of wastewater treatment technology. It solves the problems of existing technologies, such as difficulty in eliminating trace impurities, complex processes, high costs, and large amounts of wastewater generated. The method is characterized by the following steps: screening out a gel-type strong base anion exchange resin A; screening out a macroporous adsorption resin B; testing and measuring various indicators of resins A and B in a coal chemical wastewater environment; determining the compounding ratio of resins A and B based on the measured indicators and compounding them into a composite resin C; using composite resin C for adsorption; and regenerating the resin after adsorption saturation. This invention has the advantages of good impurity removal effect, simple process, low cost, and environmental friendliness.
Owner:ZHEJIANG BAIMA LAKE LABORATORY CO LTD

Wurtzite boron nitride / diamond composite material and preparation method and application thereof

The invention provides a wurtzite boron nitride / diamond composite material and a preparation method and application thereof, the composite material is composed of two phases of wurtzite boron nitride and diamond, and has a stacked sandwich microstructure, the sandwich microstructure comprises at least one first wurtzite boron nitride layer and at least one second wurtzite boron nitride layer, wherein the first wurtzite boron nitride layer is formed by wurtzite boron nitride; at least one second wurtzite boron nitride layer composed of wurtzite boron nitride; the composite material comprises a first wurtzite boron nitride layer, a second wurtzite boron nitride layer and a diamond layer, the diamond layer is arranged between the first wurtzite boron nitride layer and the second wurtzite boron nitride layer and is made of diamond, wurtzite boron nitride is a metastable phase stably existing under normal pressure, and the Vickers hardness of the composite material is larger than 50 GPa. The novel wurtzite boron nitride / diamond composite material disclosed by the invention has high hardness, high toughness and high thermal stability, and the preparation method disclosed by the invention is low in initial raw material price and simple in preparation process.
Owner:INSTITUTE OF PHYSICS CHINESE ACADEMY OF SCIENCES

Nitrogen-rich mesoporous carbon-based cholesterol adsorption ingredient as well as preparation method and application thereof

The invention relates to the technical field of grain and oil by-product high-value utilization and food functional ingredient preparation, in particular to a nitrogen-rich mesoporous carbon-based cholesterol adsorption ingredient as well as a preparation method and application thereof. According to the method, soybean meal and rice bran are taken as a carbon source and an endogenous nitrogen source, and urea or melamine is compounded as an exogenous nitrogen-rich precursor, so that an internal-external synergistic nitrogen-rich system is constructed; the method comprises the following steps: compounding a zinc chloride or potassium hydroxide chemical activator with a ferric chloride catalytic graphitizing agent to form a nitrogen-rich-catalytic synergistic conversion system; the method comprises the steps of raw material pretreatment, nitrogen-rich slurry preparation, catalytic activation precursor preparation and the like. The prepared carbon-based ingredient has a developed mesoporous structure and high-content alkaline nitrogen-containing functional groups, and is large in cholesterol adsorption capacity and high in selectivity, and the raw materials are grain and oil processing byproducts, so that the cost is low, and the carbon-based ingredient is green and environment-friendly; the preparation process has the advantages of controllable parameters and good repeatability, is suitable for industrial production, and provides a new technical path for the development of functional food ingredients for reducing blood fat.
Owner:HENAN UNIVERSITY OF TECHNOLOGY

Composite solid electrolyte membrane and preparation method thereof, and solid-state battery

PendingCN122552644Ablend evenlyachieve homogenization
A composite solid-state electrolyte membrane and its preparation method, and a solid-state battery, are disclosed. The preparation method of the composite solid-state electrolyte membrane includes: providing a polymer mother liquor comprising polyvinylidene fluoride, polyimide, and lithium salt; dispersing inorganic ceramic electrolyte powder in a solvent; under a first mechanical shear, adding a first portion of filler pre-dispersion liquid accounting for 5% to 25% to the polymer mother liquor; under a second mechanical shear, adding a second portion of filler pre-dispersion liquid accounting for 25% to 50%; and under a third mechanical shear, adding the remaining portion of filler pre-dispersion liquid to prepare a composite slurry; and forming the composite slurry into a film to prepare the composite solid-state electrolyte membrane. This application improves the dispersion effect and interfacial bonding of the filler in the composite solid-state electrolyte membrane by using a combination of staged feeding and mechanical shear, pre-wetting a small amount of filler to construct a stable initial mixed phase, and then using a portion of the filler to reduce viscosity and improve shear efficiency, thereby promoting the uniform dispersion of the remaining filler.
Owner:SUZHOU GUTAI TECHNOLOGY CO LTD

Package substrate, method of manufacturing the same, and chip package structure

The application discloses a packaging board, a preparation method thereof and a chip packaging structure. First, a substrate is provided, and a first through hole is formed by patterning the substrate, the first through hole penetrating the substrate in a thickness direction, the first through hole having a first axis, the first through hole having a first opening and a second opening oppositely arranged in the thickness direction, and the aperture of the first opening being smaller than that of the second opening. Then, a buffer structure is filled in the first through hole, and a second through hole is formed by patterning the buffer structure, the second through hole penetrating the buffer structure in the thickness direction, the second through hole having a second axis, and the first axis and the second axis being arranged in a same line. Finally, a conductive structure is prepared, and the conductive structure is located in the second through hole. The first axis and the second axis are arranged in the same line, the thickness distribution of the buffer structure around the conductive structure is uniform, the stress generated due to the difference in thermal expansion coefficients between the substrate and the conductive structure is effectively buffered, and the risk of crack generation is reduced.
Owner:SUZHOU GUOXIAN INNOVATION TECHNOLOGY CO LTD

An additive manufacturing method for strain rate enhanced composite gel

ActiveCN117445390BHigh forming precisionOvercome the limitations of moldingManufacturing platforms/substrates3D object support structuresN-Octanoic acidOctanoic Acids
This invention relates to an additive manufacturing method for strain rate-enhanced composite gels, comprising: a) polymerizing silicone oil, boric acid, and octanoic acid at high temperature to prepare a shear-hardening gel; b) introducing the shear-hardening gel into a polyvinyl alcohol aqueous solution and adding chitosan particles, followed by ball milling to obtain a composite gel precursor; c) printing the composite gel precursor using pneumatic extrusion combined with a triaxial motion control system, and then obtaining the composite gel through freeze-thaw treatment. This composite gel precursor is propelled from the nozzle by air pressure in a pneumatic extruder, and the triaxial motion control system enables the deposition of arbitrary two-dimensional patterns and the stacking of three-dimensional structures, overcoming the limitations of traditional strain rate-enhanced composite gels formed by molding and injection molding methods, and endowing it with greater molding freedom and higher molding precision in additive manufacturing.
Owner:UNIV OF SCI & TECH OF CHINA

A method for preparing high-density titanium-doped iron phosphate

A preparation method of high-compaction titanium-doped iron phosphate, comprising S1, preparing a phosphoric acid solution, a hydrogen peroxide solution, a Ti salt solution, a phosphorus salt solution and a ferrous salt solution; S2, mixing the Ti salt solution and the ferrous salt solution to obtain a titanium-iron salt solution; mixing the phosphoric acid solution and the phosphorus salt solution to obtain a phosphorus source solution; S3, adding the titanium-iron salt solution into a reaction kettle and adding the hydrogen peroxide solution; S4, adding the phosphorus salt solution into the reaction kettle to obtain a yellow slurry; S5, after the slurry color changes to white after temperature rising, a white slurry is obtained; S6, performing solid-liquid separation on the white slurry to obtain an iron phosphate dihydrate filter cake; S7, drying and calcining the iron phosphate dihydrate filter cake to obtain a battery-grade anhydrous iron phosphate doped with Ti. The present application prepares titanium-doped iron phosphate in one step, controls the molar ratio of iron elements to total phosphorus, phosphorus ammonium and phosphoric acid in the reaction system, controls the pH of the reaction system, ensures the retention of Ti elements in the finished product and regulates the iron-phosphorus ratio within a specified range.
Owner:XINYANGFENG AGRI TECH CO LTD +1

InGaAs focal plane detector based on DTW integration and preparation method thereof

PendingCN121968759AWith high temperature processing conditionsimprove consistencyFinal product manufactureIndium bumpDevice material
The invention relates to the technical field of semiconductor devices, in particular to an InGaAs focal plane detector based on DTW integration and a preparation method of the InGaAs focal plane detector, and the InGaAs focal plane detector comprises a silicon-based readout circuit wafer layer, an InGaAs detector array chip layer, N electrode metal and an optical filter film structure layer. The first indium bump array and the second indium bump array are bonded in a flip-chip manner and are filled and fixed by an organic polymer medium; the N electrode metal is respectively connected with the n-InP contact layer and the N electrode region; and the optical filter film structure layer is arranged on the back surface of the InGaAs detector array chip layer. According to the DTW integration technology based on the In salient point array, a traditional N hole structure and a preparation technology are removed, the N electrode is led out from the back face to the N electrode of the reading circuit after the substrate is removed, the technology steps can be simplified, the area of a detector array chip is reduced, a wafer-level machining platform is connected, and the condition for constructing a high-performance optical filtering structure is achieved.
Owner:THE 44TH INST OF CHINA ELECTRONICS TECH GROUP CORP

Semiconductor packaging structure and preparation method thereof

According to the semiconductor packaging structure and the preparation method thereof provided by the invention, the diffusion barrier layer is formed on the upper surface of the first packaging chip, and the diffusion barrier layer is only ground in the process of grinding and thinning the first packaging layer, so that a Cu metal column and the first packaging chip are prevented from being ground at the same time, and therefore, Cu metal can be prevented from remaining on the first packaging chip; therefore, the first packaging chip is prevented from being polluted by diffusion of Cu metal, and the problems of function failure, such as breakdown voltage reduction and electric leakage, of a chip sensitive to Cu caused by diffusion of Cu metal are avoided.
Owner:SJ SEMICONDUCTOR (JIANGYIN) CORP

Gel injection molding method for ceramic electrolyte of solid sodium salt battery for energy storage

PendingCN121872758AMeet molding needsExcellent green performanceSecondary cellsSolid state electrolyteElectrical battery
The invention discloses a gel casting method of a solid sodium salt battery ceramic electrolyte for energy storage. The injection molding method comprises the following steps: calcining Na-beta ''-Al2O3 powder in an air atmosphere, mixing the calcined Na-beta''-Al2O3 powder with water and ammonium polyacrylate, carrying out primary ball milling, and carrying out spray drying and granulation to obtain spray granulation powder; adding the mixture into a premixed aqueous solution of a dispersing agent and an adhesive, and carrying out secondary ball milling to obtain slurry; injecting the obtained slurry into a mold, applying axial pressure to the slurry through a piston device of the mold, and maintaining the pressure; standing the whole mold in the pressurized state; taking a green body after pressure relief; carrying out coupling drying on the obtained green body in three stages, and then carrying out glue removal in an air atmosphere to obtain a prefabricated ceramic tube green body; and sintering to obtain the solid electrolyte. The solid electrolyte with high density, high ionic conductivity and high bending strength prepared by the method has a clean low-impedance grain boundary, and completely meets the high-performance requirement of a solid sodium battery on a core electrolyte.
Owner:INNER MONGOLIA JIANHENG AONENG TECH CO LTD

A highly wear and corrosion resistant multi-principal element alloy and a method of making the same

PendingCN122256786AOptimize phase compositionImprove microstructureChemical compositionMetallic materials
This invention discloses a highly wear-resistant and corrosion-resistant multi-principal element alloy and its preparation method, belonging to the field of metallic material preparation technology. It includes four main alloying elements (Al, Cr, Fe, and Ni) and a dopant element (Mn). The chemical composition of the multi-principal element alloy satisfies the general formula Al... a Cr b Fe c Ni d Mn e Where a is the atomic percentage of Al, b is the atomic percentage of Cr, c is the atomic percentage of Fe, d is the atomic percentage of Ni, and e is the atomic percentage of Mn, with the sum of the atomic percentages of each element being 100%. This invention regulates the phase, microstructure, and elemental distribution of the alloy through Mn doping, resulting in an alloy that possesses high hardness, excellent corrosion resistance, and corrosion wear resistance, as well as good plastic processing performance. The supporting preparation method is simple, with controllable parameters and readily available raw materials, making it suitable for large-scale industrial production. It can be widely used in key structural components of marine engineering equipment and other equipment operating under harsh corrosion-wear coupling conditions.
Owner:HAINAN UNIV

Gallium oxide and synthetic method thereof

The invention belongs to the field of semiconductor materials, and discloses gallium oxide and a synthesis method thereof. The synthesis method comprises the following steps: introducing ammonia water into a gallium nitrate solution, and continuously stirring to obtain a white turbid liquid; aging the white turbid liquid, filtering and washing to obtain an intermediate product; and calcining the intermediate product to obtain solid particles which are gallium oxide. According to the synthesis method, gallium nitrate and ammonia water are used as core raw materials, additional additives and complex precursors are not needed, the impurity introduction risk can be greatly reduced, and the high purity of the product can be guaranteed by combining washing and calcining procedures; meanwhile, the process steps are simple, the operation conditions are mild and controllable, expensive special equipment is not needed, the production cost is low, the method is suitable for large-scale production, and a gallium oxide product with good dispersity and high crystallinity can be obtained after a precursor prepared through a precipitation method is calcined and crushed.
Owner:FIRST RARE MATERIALS CO LTD

Al-cu series welding wire and preparation method and application thereof

The application discloses Al-Cu series welding wire and a preparation method and application thereof, and belongs to the technical field of laser welding. The welding wire is prepared according to a designed component distribution ratio of each component including aluminum, aluminum-copper intermediate alloy, aluminum-titanium intermediate alloy, aluminum-magnesium intermediate alloy, aluminum-silicon intermediate alloy, aluminum-manganese intermediate alloy, aluminum-scandium intermediate alloy and aluminum-zirconium intermediate alloy, and each component is smelted and cast to obtain an ingot. The ingot is subjected to multi-stage homogenization treatment, and then is subjected to hot rolling and wire cutting to obtain the welding wire. The welding wire is introduced with trace amounts of Sc, Si, Ti and Zr in a low-cost high-Cu-content weld pool system, the proportion of the equiaxed crystal zone in the weld structure is improved, the weld structure is refined, the mechanical properties matched with the Al-Cu-Li alloy are improved, the content of W hard and brittle phase is reduced through a corresponding process, and the processability and weld performance of the welding wire are effectively ensured.
Owner:CENT SOUTH UNIV

Anti-bleeding high-rheological coal gangue grouting filling material and preparation method and application thereof

PendingCN122233671A
This invention discloses a coal gangue grouting and filling material with high rheological resistance and resistant to bleeding, its preparation method, and its application, relating to the field of mine filling material technology. The grouting and filling material, by mass percentage, comprises: 70%~75% coal gangue, 0.55%~2.3% composite rheology modifier, and the balance being water; wherein the composite rheology modifier includes an air-entraining agent and a dispersant, with a mass ratio of (90~99):(1~10); the air-entraining agent is a surface-active foaming material, and the dispersant is a phosphate additive. In its preparation, coal gangue is first mixed with water and stirred to obtain an initial slurry; then the air-entraining agent and dispersant are mixed to prepare the composite rheology modifier; finally, the composite rheology modifier is added to the initial slurry and stirred until homogeneous to obtain the grouting and filling material. This grouting and filling material uses coal gangue as the main raw material, has a simple preparation process, and possesses excellent fluidity, stability, and pumpability.
Owner:XIAN UNIV OF SCI & TECH

Secondary texturing efficiency-improving process suitable for TOPCon battery

PendingCN122002943AImprove trapping effectSuede structure with excellent light trapping propertiesFinal product manufactureEtchingElectrical battery
The invention belongs to the technical field of photovoltaic cells, and particularly relates to a secondary texturing efficiency-improving process suitable for a TOPCon cell, the secondary texturing efficiency-improving process comprises the steps of pre-cleaning, first texturing, intermediate washing, second texturing, post-cleaning and pickling which are carried out in sequence, the first texturing is carried out at a relatively high temperature, and a basic pyramid textured structure is formed; and the second texturing is carried out at a relatively low temperature, and the textured surface is finely optimized to form a pagoda-shaped pyramid structure. Through specific formula combination, temperature step control and a step-by-step corrosion strategy, the textured structure with excellent light trapping performance can be stably prepared, a pagoda-shaped pyramid structure with a better height-width ratio is achieved, the light trapping effect is effectively improved, the reflectivity is reduced, and the light trapping effect is improved. Therefore, the photoelectric conversion efficiency, the short-circuit current and the fill factor of the photovoltaic cell are improved, and the purposes of efficiency improvement and cost reduction are achieved.
Owner:弘元新材料(徐州)有限公司 +1

A datum transfer process method for eccentric part machining

A reference transfer process method for eccentric part machining relates to the technical field of machining process, comprising: 1, processing initial reference based on first axis; 2, clamping to be processed part to construct initial machining coordinate system; 3, setting auxiliary reference block, so that the auxiliary reference block and the initial machining coordinate system have a determined geometric relationship; 4, processing auxiliary reference plane on the auxiliary reference block, so that the auxiliary reference plane and the preset new machining coordinate system have a determined geometric relationship; 5, rotating the rotary workbench to the corresponding angle, and verifying and correcting the rotation angle by using the auxiliary reference plane; 6, obtaining the new machining coordinate system origin based on the auxiliary reference block, combined with the eccentricity and eccentric angle of the part to be machined; 7, completing the fine machining of the second axis part of the part to be machined based on the new machining coordinate system. The application can solve the technical problems of high machining cost, complicated process and difficult to guarantee precision in the prior art of machining eccentric parts.
Owner:CITIC HEAVY INDUSTRIES CO LTD

A process for the preparation of alpha-terpinone

The application discloses a preparation method of alpha-tuliketone, relates to organic synthesis technology utilization, and the preparation is that 4,8-dimethyl-3,7-nonadiene-2-ketone and triacetal are subjected to aldol condensation reaction under the action of acid-base bifunctional catalyst to generate alpha-tuliketone; the acid-base bifunctional catalyst is obtained by grafting organic base onto carboxylic acid functionalized mesoporous material.The acid-base bifunctional catalyst is simple in preparation, good in stability and reusable, is used for catalyzing the reaction of 4,8-dimethyl-3,7-nonadiene-2-ketone and triacetal, can directly generate target product alpha-tuliketone by one-pot method, is high in reaction activity, short in reaction period, simple in post-treatment, simplifies process, is high in yield, and the yield can reach more than 95%.
Owner:亳州优开生物医药科技有限公司

A wurtzite boron nitride / diamond composite material and a preparation method and application thereof

The application provides a wurtzite boron nitride / diamond composite material and a preparation method and application thereof. The composite material is composed of two phases of wurtzite boron nitride and diamond, and has a stacked sandwich microstructure, which comprises at least one first wurtzite boron nitride layer composed of wurtzite boron nitride, at least one second wurtzite boron nitride layer composed of wurtzite boron nitride, and a diamond layer composed of diamond and sandwiched between the first wurtzite boron nitride layer and the second wurtzite boron nitride layer. The wurtzite boron nitride is a metastable phase stably existing under normal pressure, and the Vickers hardness of the composite material is greater than 50 GPa. The novel wurtzite boron nitride / diamond composite material has high hardness, high toughness and high thermal stability, and the preparation method has low starting material price and simple preparation process.
Owner:INSTITUTE OF PHYSICS CHINESE ACADEMY OF SCIENCES

Flexible nitride-based vertical structure optoelectronic device array and its fabrication method

PendingCN122679763ASolve the problem of easy cracking due to repeated bendingImproved flexibility and tolerance
This invention relates to the field of nitride-based optoelectronic device fabrication technology, and particularly to a flexible nitride-based vertical structure optoelectronic device array and its fabrication method. The array comprises, from bottom to top, a flexible substrate, a p-electrode thin film, a p-side aperture isolation layer, a light-emitting functional composite layer, an n-side aperture isolation layer, and discrete n-electrodes, all stacked tightly together. In the light-emitting functional composite layer, single-crystal light-emitting diode (LED) chips are arranged at intervals and tightly surrounded by a nitride polycrystalline epitaxial region. The p-side aperture isolation layer is bonded to the lower surface of the nitride polycrystalline epitaxial region, and the n-side aperture isolation layer is bonded to the upper surface. Both the nitride polycrystalline epitaxial region and the single-crystal LED chips have, from bottom to top, an n-type doped AlGaN layer, a multi-period AlGaN quantum well, a p-type doped AlGaN layer, and a p-type GaN contact layer. The advantages are: the fabricated device provides a stress relief channel for bending, the single-crystal LED chips are independently controlled for light, and there is no thermal damage during peeling.
Owner:CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI

Advanced package TSV identification alignment packaging method, packaging structure and packaging alignment system

ActiveCN119069409BWill not affect recognitioneasy to cleanWaferPhotoresist
The application belongs to the technical field of semiconductor processing, and particularly relates to an advanced packaging TSV identification alignment packaging method, a packaging structure and a packaging alignment system. A TSV window groove structure is processed from the side of a bonding surface to align the position of an identification, the position of the TSV window groove structure of the bonding surface of a wafer is used to identify the alignment identification on the back surface of the wafer, an oxide medium is deposited from the side of the bonding surface, the oxide medium has transparency, the alignment identification can be identified from the bonding surface of the wafer, photoresist is deposited on the surface of the oxide medium, the photoresist after etching is etched and removed, and the wafer and a carrier substrate are aligned according to the alignment identification to complete chip packaging. The method is realized based on a packaging alignment system. The packaging structure and the packaging alignment system can be used for the packaging method. In the photoetching process, the photoresist is coated on the surface of the oxide medium layer, the problem that the photoresist is directly filled into the TSV window groove and the filling depth of the photoresist is too deep and the photoresist cannot be completely cleaned can be solved.
Owner:THING ELEMENT SEMICON TECH (QINGDAO) CO LTD