17results about How to "Solve Oxidation Problems" patented technology

This invention discloses a single-component moisture-curing conductive and thermally conductive adhesive and its preparation process, comprising the following raw materials in parts by weight: 100 parts SMP adhesive; 15-30 parts flake silver powder; 500-900 parts spherical silver-coated copper powder; 0-400 parts dendritic silver-coated copper powder; 10-20 parts decamethyltetrasiloxane; 1-1.5 parts β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate isooctyl ester; 7.5-10 parts N-β-(aminoethyl)-γ-aminopropyltrimethoxysilane; and 1-1.5 parts vinyltrimethoxysilane. This invention allows the adhesive to cure at room temperature / low temperature using moisture in the air, eliminating the need for temperatures above 120°C. This completely avoids thermal stress damage to heat-sensitive substrates such as plastics, flexible circuit boards, and PET / PI films, making it perfectly suited for low-temperature processing scenarios such as flexible electronics manufacturing, wearable devices, and flexible sensors.

The invention relates to the technical field of electrocatalysis, in particular to an oxygen / sulfur heterostructure oxygen evolution electrocatalyst and a preparation method and application thereof. Based on an in-situ oxidation strategy, a CuFeO layer is generated on the surface of CuFeS, and the CuFeS-coated CuFeO high-performance oxygen evolution electrocatalyst with a heterostructure is obtained. By constructing a sulfide-oxide heterojunction, a built-in electric field can be formed at an interface to promote charge separation and transfer, so that the electrocatalytic activity is remarkably improved. And on the other hand, the CuFeO layer on the outer layer serves as an armor, and the problem of oxidation of the surface of CuFeS is solved. The electro-catalytic performance and the long-term stability are obviously improved.

The utility model relates to lithium ion battery technical field discloses a high solid content type lithium manganate production manganese dioxide chlorine element removal device, including mounting bracket and rotating plate rotation connection in the left and right sides of the inner wall of mounting bracket, still include: fixed in the left side of mounting bracket motor, and the output shaft of motor penetrates mounting bracket and is fixedly connected between the left rotating plate, the utility model has multiple dehydration function, this device can first to the wet manganese dioxide filter cake extrusion dehydration, can remove the large amount of free water in filter cake in advance, greatly reduce the water content required to remove subsequent drying, then continue to the wet manganese dioxide filter cake and rotate drying treatment, make the wet manganese dioxide filter cake and hot air can fully contact, accelerate the moisture evaporation rate, further improve the drying efficiency, effectively avoid the manganese dioxide oxidation problem caused by local temperature too high, guarantee the chemical property stability of manganese dioxide, ensure that the product quality is not influenced.

The application relates to a low-cost high-performance titanium-based composite plate preparation method. First, ingredients are prepared, smelting is carried out, an ingot is prepared, and a titanium-based composite slab is obtained through cutting. The raw materials include 3%-6% of high-purity Cr3C2 powder, and the balance is 0-grade titanium sponge particles; then the surface of the titanium-based composite slab is polished, alkali-washed, acid-washed, and air-dried, a high-temperature oxidation-resistant coating is coated on the surface of the slab, the slab is subjected to incremental gradient deformation hot rolling treatment, and the slab is air-cooled to room temperature to obtain a semi-finished titanium-based composite plate; finally, the plate is subjected to annealing treatment, the surface of the plate is polished, alkali-washed, acid-washed, and air-dried after the annealing treatment, and a finished titanium-based composite plate is obtained. The application shortens the hot rolling process, avoids the oxidation problem of the plate caused by multiple times of hot rolling treatment, effectively controls the distribution mode of the reinforcing phase in the titanium-based composite plate, realizes the uniform distribution of the reinforcing phase, and is simple in process, so the production cost is lower.

A high-speed kneader for producing composite materials relates to the field of kneader technology and solves the problem of easy oxidation and performance degradation of composite materials during the kneading process in existing technologies. It includes a tank body, with a feeding tank connected to the bottom of the tank body. A discharge pipe is connected to the lower end of the feeding tank. An inlet pipe and a vacuum pipe are connected to the upper side wall of the tank body. A rotating shaft is coaxially rotatably connected to the tank body. The lower end of the rotating shaft is disposed inside the feeding tank. An air inlet is opened on the bottom end face of the rotating shaft, and multiple air outlets are evenly opened on the top side wall of the rotating shaft. An electric heating element is connected inside the rotating shaft, and multiple mixing blades are connected around the circumference of the rotating shaft. A material receiving plate is provided on the top of the feeding tank, and an air inlet pipe is connected to the side wall of the feeding tank. The beneficial effect is that it can inhibit the contact between materials and oxygen, improving the performance stability of composite materials.

The invention relates to the field of traditional Chinese medicine preparation preparation, and discloses an anti-fatigue Longquan drink preparation method, which comprises: 1, carrying out low-temperature steam distillation treatment on radix fici simplicissimae, and collecting the distillate; step 2, carrying out curing treatment on the distillate to obtain aroma powder; step 3, mixing dried mulberry leaves, dried papaya, fried coix seeds and the radix fici simplicissimae treated in the step 1, and performing water extraction to obtain a water extract; 4, alcohol extraction is conducted on the medicine residues, and alcohol extraction concentrated extract is obtained; step 5, performing juicing treatment on the bamboo and the sugarcane to obtain bamboo and sugarcane concentrated juice; step 6, combining the bamboo cane concentrated juice, the water extract and the alcohol extraction concentrated extract, refining, and spray-drying to obtain extracted powder; and 7, uniformly mixing the extracted powder with the aroma powder, and carrying out dry granulation. According to the preparation method of the anti-fatigue Longquan drink, by optimizing the preparation process, the symbolic coconut fragrance of the radix fici simplicissimae is reserved to the maximum extent, and the product has high identification degree and traditional identification sense.

A method for in-situ synthesis of PbCl2-coated PbSe quantum dots. The synthesis steps are as follows: mixing lead oxide (PbO), 1-octadecene (ODE), oleic acid (OA) and lead chloride (PbCl2), removing water oxygen in the reaction system under vacuum conditions, slowly heating to completely dissolve yellow PbO, then passing nitrogen and continuing to heat to temperature stability; injecting diphenylphosphine selenium (DPPSe) solution into Pb precursor solution, then slowly pushing into the mixed solution of diphenylphosphine (DPP) and tri-n-octylphosphine selenium (TOPSe) with a stepper motor to obtain PbCl2-coated PbSe quantum dots. By changing the amount of PbCl2, the particle size distribution of the synthesized PbSe quantum dots is controlled, and the finally prepared quantum dots have uniform particle size distribution and high air stability.

The utility model relates to inductance processing equipment technical field especially relates to a spot welding mechanism based on inductance is provided with welding mechanism and grinding mechanism, can realize the integrated operation of welding and welding head maintenance, welding mechanism includes welding head drive assembly and welding head, welding head drive assembly adopts the series connection structure of three -level linear drive unit, realizes the high accuracy control of welding head space position, guarantees the welding accuracy, grinding mechanism includes lifting drive assembly and grinding piece, lifting drive assembly drives the accurate lifting of grinding piece, and the welding process of welding head can be avoided to the grinding piece descending, and the grinding piece rises and is contacted with welding head automatically and completes surface treatment, effectively solved the problem of welding head oxidation and tin dregs accumulation, make the operation of spot welding mechanism have continuity, significantly reduced equipment maintenance cost and production downtime, especially suitable for high -frequency inductance's large -scale automation production.

The invention discloses a system and a method for recycling valuable metals of a lithium ion battery through cooperation of wet grinding and vacuum pyrolysis. The recycling method comprises the following steps: completely discharging a waste lithium ion battery, disassembling and separating a positive plate and a negative plate, crushing and sieving, and collecting undersize powder; mixing with a grinding medium, and carrying out ball milling by adopting a ball milling tank; the slurry is sieved after being dried, and screen underflow is collected and is electrode black powder; putting the electrode black powder into a vacuum pyrolysis reactor, vacuumizing and then pyrolyzing; and after the pyrolysis is finished, cooling to room temperature under vacuum or inert gas protection to obtain a valuable metal solid product. The method is carried out at a relatively low temperature, metal oxidation can be inhibited, generation of harmful gas is reduced, separation and pyrolysis with higher adaptability to raw materials are realized, and directional recovery is realized.

This invention relates to the field of medical device technology, specifically to a physiotherapy lamp. It includes a support frame, on which an irradiation assembly is mounted. The irradiation assembly includes a fixed frame, within which a housing is slidably disposed. An irradiation unit is fixedly disposed within the lower end of the housing. The housing is fixedly connected to a connecting assembly, which is slidably connected to the fixed frame and to an air pump. Multiple air tubes are disposed below the housing, with multiple nozzles fixedly connected to their lower ends. Sliding rods are slidably disposed at both ends of the fixed frame below the housing. One end of a folding plate is fixedly connected to a sliding rod, and the other end of the folding plate is fixedly connected to the fixed frame. The ends of the sliding rods are connected to the fixed frame via spring bellows, the interior of which is connected to one end of a second channel opened within the fixed frame. This invention allows the housing to move upwards and cut off the light source when the patient accidentally gets up, preventing high-temperature radiation from directly hitting the skin. The folding plate then unfolds, blocking residual heat conduction paths.

This invention belongs to the field of energy storage and flow battery technology, and relates to an iron-chromium flow battery electrolyte Cr 2+ An in-situ online detection system, method, and application for Cr concentration. The system includes a detection battery module, an online spectral detection module, and a data processing and control unit. A characteristic wavelength of 800 nm was selected, and the relationship between absorbance and Cr was established. 2+ Concentration mapping model to eliminate Cr 3+ Interfering with and reducing Fe 2+ Impact on measurement; based on the linear relationship between the rate of change of state of charge and the rate of change of absorbance at 800 nm, online measurement of Cr 2+ The system enables real-time and accurate detection of molar absorbance at different concentrations and temperatures. Measurements are taken online via a series Venturi tube or in situ via a liquid sampling and return pipe connected to the side wall of the electrolyte storage tank or pipeline. The liquid sampling and return pipe allows for quick and fully sealed connection to the pipeline or storage tank, minimizing interference and preventing Cr contamination. 2+ Oxidation-induced measurement distortion provides high-precision real-time data support for monitoring electrolyte charge, health status, and stack performance.

The application relates to the technical field of microwave power detection, and particularly provides a microwave power detector, which comprises a waveguide tube, a plurality of probe assemblies fixed equidistantly on the waveguide tube, the probe assemblies each comprising a bushing and an adjustable probe, the adjustable probe comprising a probe base and a probe needle body, the probe base being in threaded connection with the probe needle body, the bushing being provided with an adjusting cavity, the probe needle body being located in the adjusting cavity, and the bushing being tightly attached to the probe base to seal the adjusting cavity; and an upper cover installed on the waveguide tube and used for sealing the plurality of probe assemblies; the detector can effectively solve the problem of oxidation of the probe needle body caused by contact of the probe needle body with air in the waveguide tube.

This invention belongs to the field of wastewater treatment technology, specifically a method for treating medical wastewater by synergistically removing new pollutants and pathogenic microorganisms. The method includes the following steps: S1, Pretreatment: Inorganic flocculants are added to the medical wastewater to promote the aggregation and sedimentation of suspended particles and colloids; S2, Oxidation Treatment: A composite agent is added to the pretreated medical wastewater while a direct current electric field is applied. The composite agent includes potassium persulfate, aminosulfonic acid, sodium chloride, sodium bromide, surfactant, pH buffer, composite corrosion inhibitor, anti-caking agent, and anhydrous sodium sulfate. After dissolving, the composite agent generates a strong oxidizing component that mineralizes and decomposes organic matter while killing pathogens; S3, Biochemical Treatment: The oxidized medical wastewater is then subjected to biochemical treatment to remove ammonia nitrogen and small molecule organic matter. This invention can effectively decompose various new pollutants and inactivate pathogenic microorganisms, thus improving the treatment effect.

The invention discloses a semiconductor structure and a corresponding chip and product. The structure comprises a silicon-based integrated circuit and a bump structure arranged on the silicon-based integrated circuit. The bump structure sequentially comprises a UBM layer, a copper conductor layer, a nickel conductor layer and a gold conductor layer. The exposed side walls of the UBM layer, the copper conductor layer and the nickel conductor layer are coated with a metal protection layer composed of palladium, palladium alloy, platinum or platinum alloy, and the protection layer does not cover the gold conductor layer. According to the preparation method, the step-shaped side wall is formed through etching steps in a specific sequence, selective self-growth of the protective layer on the titanium / copper / nickel side wall is achieved through chemical plating based on metal equilibrium potential difference, and the protective layer is not deposited on the gold surface. The problems of poor welding and short circuit caused by oxide generated by side wall oxidation and copper diffusion of the copper-nickel-gold bump are effectively solved, the long-term reliability is remarkably improved, meanwhile, the using amount of precious metal is small, the technology is ingenious, and the method is particularly suitable for the high-end display field of liquid crystal driving chips and the like.

This invention provides a highly conductive copper paste that cures in an air atmosphere, its preparation method, and its applications, belonging to the field of conductive paste preparation technology. The highly conductive copper paste comprises: 60-80% conductive copper powder; 3-10% polymer resin; 1-3% curing agent; 3-10% first solvent; 1-5% additives; and 7.5-17% particle-free conductive copper ink. The copper salt precursor in the particle-free conductive copper ink is dissolved in the form of copper ions in a mixture of its complexing agent and second solvent. When the highly conductive copper paste is heated and cured in an air atmosphere, the copper ions in the particle-free conductive copper ink are reduced in situ to nano-copper particles, which form welded connections between the conductive copper powder particles, constituting a conductive network composed of micron-sized conductive copper powder and in-situ generated nano-copper weld points. The highly conductive copper paste of this invention has low manufacturing cost, high conductivity, and the potential for room temperature dormancy and heat-triggered decomposition.

The application belongs to the technical field of non-ferrous metal processing and relates to a protection method for a titanium alloy sample during heat treatment. The titanium alloy sample is first placed at the bottom of a preset hole of a titanium alloy base. Then, a sealing sample block, fine-grained titanium sponge and large-grained titanium sponge are sequentially placed until the preset hole of the titanium alloy base is filled. Finally, plasma welding box packaging is performed, so that the titanium alloy sample is packaged in the titanium alloy base, thereby solving the pollution and oxidation problems of the titanium alloy sample during heat treatment in the process of titanium alloy research.

This invention relates to the field of electronic materials technology and discloses a low-temperature curing copper-silver composite paste for TGV interconnects and multilayer RDL fabrication and its preparation method. The aim is to address how to suppress the destructive effect of intrinsic copper oxidation on the conductive network during TGV via metallization in an air atmosphere at 200-300°C. This is achieved by using a dense silver layer to coat copper powder to form silver-coated copper composite particles, suppressing the oxidation of the copper core during the heating process. The low-temperature sintering activity of nano-silver powder forms conductive silver bridges before the silver layer dehumidifies, connecting adjacent silver-coated copper particles. A high-temperature resistant resin with a glass transition temperature higher than 260°C after curing is selected as the binder. After curing, the resin is distributed in a discontinuous island-like pattern between the particles, applying compressive stress to enhance contact and simultaneously resisting multilayer wiring processes. The synergistic effect of these three stages allows the sintering reaction to form a stable conductive network in an air atmosphere at 200-300°C, and it is compatible with photosensitive polyimide insulating layers, making it suitable for additive manufacturing of multilayer RDLs for glass via circuit boards.