11results about How to "Full response" patented technology

The invention relates to the technical field of tin alloy solder, and discloses a preformed soldering lug with high welding strength, which comprises a soldering flux layer and a soldering lug main body, the soldering flux layer comprises esterified rosin, methyl ester, succinic acid, glutaric acid, cyclohexylamine hydrochloride and isopropanol; the soldering lug main body comprises tin, antimony, silver, bismuth, copper and nickel; by adding silver, bismuth, copper, nickel and metal elements in the alloy into the soldering lug, the mechanical strength of the solder alloy can be improved, compared with common tin-copper alloy, the mechanical strength of the soldering lug is greatly improved, the soldering flux is high in activity but low in corrosivity, stable high-mechanical-strength intermediate layer alloy is formed, and the soldering flux can be applied to the field of soldering. The welding strength and the tensile strength are more excellent, the soldering flux layer and the soldering lug main body have the synergistic effect, so that a welded part has high tensile property after being welded, and the mechanical strength of the solder alloy can be improved by adding silver, bismuth, copper and nickel in the alloy into the soldering lug and metal elements.

The invention discloses a cleaning method for a semiconductor photoetching mask substrate, and belongs to the technical field of semiconductor manufacturing. According to the method, dynamic cleaning logic of step cooperation and energy matching is adopted, and the steps of interface wetting and pre-cleaning, chemical soft interface construction, low-damage mechanical stripping and synchronous washing, targeted reaction clearing, microstructure deep cleaning, interface dehydration and modification and final energy-assisted drying are sequentially executed. The method is characterized in that through the dependency relationship of chemical interface softening and low-damage mechanical stripping in sequence, the rotation speed of a substrate in each step is strictly controlled to meet the specific dynamic relationship (V2 < V1 < V4 < V3 < V5 < V6), and precise cooperation of chemical action, physical stripping and energy field cleaning is achieved. The contradiction between efficiency and substrate damage in a traditional cleaning process is effectively solved, full-scale pollutants from micron-scale particles to nano-scale molecular contamination can be removed without dead corners, and a clean, stable and secondary pollution resistant surface state is actively reconstructed at a cleaning end point; and the cleanliness and the service life of the mask substrate and the yield of a downstream photoetching process are remarkably improved.

The utility model discloses a device for preparing m-aminotrifluorotoluene, which comprises a second mixing tank, the upper end of the second mixing tank is connected with a connecting pipe, one side of the second mixing tank is fixedly provided with a support frame, the support frame is provided with a first mixing tank, the upper end of the connecting pipe is connected with one side of the lower end of the first mixing tank, and the lower end of the connecting pipe is connected with the other side of the second mixing tank. One side of the upper end of the first mixing tank is connected with an adding box, and one sides of the lower ends of the adding box and the second mixing tank are connected with a first circulating mechanism. According to the utility model, the circular flow of raw materials is realized, and the spraying function of the spraying mechanism is combined, so that the stirring dead angle of the traditional stirring device is broken, the liquid raw materials can be fully mixed in the first mixing tank and the second mixing tank, the mixing uniformity is greatly improved, and the obtained liquid raw materials can be more fully contacted and reacted; the reaction time and energy consumption are reduced, and the overall efficiency of the reaction is improved, so that the product yield in unit time is increased.

The utility model discloses a steel ladle bottom blowing system based on laval pipe structure belongs to metallurgical steelmaking technical field, specifically is between the gas supply pipe of steel ladle and gas source device adds laval pipe gas supply mechanism connection. Laval pipe gas supply mechanism includes gas delivery pipeline, laval pipe and gas source connecting pipe. Among them, gas delivery pipeline gas outlet end and the air inlet end coaxial communication of gas supply pipe. Coaxial on the end face of gas delivery pipeline air inlet end has round hole, and coaxially inserts gas source connecting pipe. The air inlet end of gas source connecting pipe is connected with gas source. Laval pipe air inlet end coaxial connection gas source connecting pipe gas outlet end. Further, the gas in the gas source can form a stable gas flow field at the air outlet end of the gas supply pipe through the laval pipe. The utility model fundamentally innovates the key link of steel ladle bottom blowing in steel smelting process, and provides the leading solution for realizing efficient and high-quality steel production.

This utility model relates to melamine-formaldehyde resin production technology, and discloses a melamine-formaldehyde resin condensation reactor with flexible chain controllable polymerization, including a reactor body, a stirring device, a temperature control device, a feeding device, a flexible chain polymerization control device, and a discharging device; the stirring device includes a motor, a drive shaft, and a stirring paddle, with the motor installed above the reactor body and connected to the stirring paddle via the drive shaft; the temperature control device includes a heating jacket, a heating coil, and a temperature sensor located inside the reactor body; the feeding device includes a feeding pipe, a high-precision flow meter, an electric valve, and a feed inlet; the flexible chain polymerization control device includes a viscometer, an infrared spectrometer, a data processor, and a controller, with the viscometer and infrared spectrometer located inside the reactor body; the discharging device is located at the bottom of the reactor body and includes a sealing valve, a discharging pipe, a heat insulation layer, and a variable frequency delivery pump, with a heat insulation layer outside the discharging pipe and the variable frequency delivery pump installed on the discharging pipe.

This invention discloses a samarium-based rare-earth permanent magnet bulk material, its preparation method, and its application. (The last part, "ThMn," appears to be an incomplete sentence or fragment and is left untranslated.) 12 A uniform metallic T coating is formed on the surface of the magnetic powder. The composite magnetic powder is then oriented, pressed into blocks, and heat-treated to create a double-layered non-magnetic shell around the grains. This shell hinders domain movement, effectively improving the material's coercivity. Furthermore, compared to doping or melting, the coating process requires less T and allows for more precise control, preventing excessive T from entering the crystal lattice and negatively impacting the material's intrinsic magnetic properties, thus significantly improving the coercivity of ThMn. 12 Density and overall performance of rare earth permanent magnets.

This invention discloses a flocculation structure and flocculation equipment, relating to the field of wastewater purification technology. The flocculation structure includes a main body and multiple flow guiding structures. The main body includes multiple mounting plates that enclose a flocculation chamber. Each flow guiding structure is located on a mounting plate, and the multiple flow guiding structures are situated within the flocculation chamber. Each flow guiding structure includes a main flow plate and auxiliary flow plates. The main flow plate forms multiple flow guiding channels, and the auxiliary flow plates are evenly distributed within these channels. This invention aims to segment the water flow and increase the swirling eddies in the wastewater through this flocculation structure, thereby ensuring thorough mixing and reaction between the wastewater and the flocculation agent, thus enhancing the flocculation effect.

The application relates to the technical field of tea processing, and particularly discloses a method for symbiotic tea making of natural solid material and tea leaves and a product. The method comprises the following steps: S1, adopting tea leaf raw materials capable of fermentation, post-fermentation or aging; S2, adopting one or more whole pieces of natural solid material, which is not subjected to dyeing, glue injection, pickling or chemical optimization treatment; S3, performing cleaning, sterilization and air-drying pretreatment on the natural solid material; S4, placing the pretreated whole piece of natural solid material in the same coexistence space as the tea leaves for joint storage; S5, performing fermentation, post-fermentation or aging on the tea leaves in a suitable environment; and S6, aging and drying. The symbiotic tea making product can be used in the fields of high-end tea market, collection and special tea drinking, has the advantages that the tea leaves are more evenly fermented and aged, the tea soup quality is softer and more mellow, and the high-end recognition and collection value of the product can be significantly improved through the synergistic transformation of the natural solid material.

This invention discloses a crystalline polyimide / polyimide composite material, its preparation method, and its applications. The method involves first uniformly mixing phenylhexacarboxylic acid trihydride with a diamine monomer, followed by a solid-phase reaction under argon atmosphere protection. After the reaction, the product is immersed in a polar solvent to obtain crystalline polyimide. Then, the crystalline polyimide is added to an organic solution of polyamic acid, subjected to ultrasonic treatment in an ice-water bath, and subsequently thermosetting to obtain the crystalline polyimide / polyimide composite material. The crystalline polyimide in this composite material has a layered two-dimensional COF structure, giving it relatively high thermal conductivity, heat resistance, and high-temperature mechanical properties. Introducing the crystalline polyimide into the polyamic acid solution utilizes the special interfacial compatibility between the amino groups in the crystalline polyimide and the anhydrides in the polyamic acid to react, solving the problem of difficult processing and effectively expanding its application range.

This utility model discloses a flocculant filtration device for pharmaceutical wastewater recovery. The key technical features include a secondary filtration tank; the secondary filtration tank is funnel-shaped and has a cavity; limiting components are installed on both inner walls of the secondary filtration tank, and a secondary filtration mechanism is assembled between the two sets of limiting components; supports are installed at the four corners of the secondary filtration tank, and a primary filtration tank is assembled on the upper surface of the four supports. By adding a secondary filtration stage to the primary filtration tank, the overall wastewater treatment efficiency of this application is improved. Primary clarification mainly relies on flocculants and gravity sedimentation, while secondary filtration further removes fine particles through physical interception, reducing pollutant residue. This progressive treatment method not only improves the removal rate but also more effectively manages and controls the destination of different pollutants, enhancing the overall stability and reliability of the filtration process.

This invention discloses a method for preparing glycine amide hydrochloride, comprising adding water and a catalyst to a reaction vessel, introducing ammonia gas at 0-5°C, then adding chloroacetic acid dropwise, stirring the reaction, raising the temperature to 30-35°C after the addition is complete, introducing ammonia gas again, and continuing the reaction for 2-3 hours until the reaction is complete, removing ammonia and water, adding methanol solvent to crystallize and obtain glycine amide hydrochloride product, and then scraping off and collecting the crystals. This invention uses chloroacetic acid to generate glycine amide hydrochloride under the action of ammonia and a catalyst, and then crystallizing the product with alcohols. This avoids the use of hydrogen chloride gas or large amounts of alcohols as solvents, reducing the safety risks caused by the concentrated use of large amounts of alcohols, shortening the reaction time, improving product quality and yield, and simplifying subsequent processing. The removed ammonia is absorbed by the removed water, and then the ammonia gas is circulated for reuse, without generating wastewater, making it environmentally friendly. This invention is applicable to the preparation of glycine amide hydrochloride.