25results about How to "Change performance" patented technology

The invention discloses a modified hollow fiber membrane which is composed of a separation layer, a supporting layer and a macroporous layer, the pore diameters of the separation layer, the supporting layer and the macroporous layer are sequentially increased, and a preparation method of the modified hollow fiber membrane comprises the following steps: weighing polyether sulfone / polysulfone, a pore-foaming agent, a solvent, an organic macromolecular additive and an inorganic salt additive according to the proportion to prepare a spinning solution; stirring and dissolving at 80-180 DEG C, centrifugally filtering, defoaming at 40-80 DEG C to obtain a spinning solution, carrying out coagulating bath on the spinning solution, molding, cleaning, stretching and drying to obtain the modified hollow fiber membrane. According to the preparation method, micromolecular inorganic salt pore-forming agents with different concentrations are added into a spinning solution and a coagulating bath, and interaction among inorganic salt, a polymer and a solvent is utilized, so that an inner skin layer structure and an outer skin layer structure of the hollow fiber membrane are adjusted, and a unique three-layer structure of a separation layer, a supporting layer and a macroporous layer is formed; the hydrophilic performance is stable, and the clearance on middle molecules is improved.

The invention discloses an ultrahigh-pressure subsurface safety valve, belongs to the technical field of petroleum and natural gas well completion, and aims at solving the problem that an existing subsurface safety valve is prone to leakage under the high-pressure condition. The ultrahigh-pressure subsurface safety valve comprises an upper connector (1), a spring barrel (3) and a lower connector (4) which are sequentially connected from top to bottom, and a piston cavity (28) is formed in the side wall of the upper connector (1); a piston mechanism is connected into the piston cavity (28) in a sealing mode, a positioning sealing nut (9) is arranged in the lower end of the piston cavity (28), and when the valve plate sealing mechanism is in an open state, the piston mechanism is connected with the positioning sealing nut (9) in a metal sealing mode. When the valve plate sealing mechanism is in a closed state, the piston mechanism is in metal sealing connection with the surface of the piston cavity (28). Under the conditions of high pressure and high temperature, the metal sealing connection performance is not easy to change, the product stability is improved, and the purpose of reducing the leakage rate of the safety valve is achieved.

The invention discloses an energy feedback type magneto-rheological elastomer shock absorber for engine suspension. The energy feedback type magneto-rheological elastomer shock absorber comprises a shell, a magnet exciting coil assembly, a magnet, a magneto-rheological elastomer, a magnetic conductive block and an iron core. The magnet and the magnet exciting coil jointly participate in the power generation process, the magnet provides a magnetic field, when the magnet exciting coil moves in the magnetic field, current is generated through the electromagnetic induction phenomenon, power generation is achieved, when the magnet exciting coil is powered on, due to the magneto-rheological effect, the magneto-rheological elastomer changes the performance, and the magneto-rheological elastomer becomes harder; due to the fact that the magnetic field intensity penetrating through the magneto-rheological elastomer varies along with the magnitude of the electrified current, the damping effect of the magneto-rheological elastomer changes along with the change of the current, the damping effect borne by the magneto-rheological elastomer in the working process is controllable, and if too much current is not used, the current is stored in the energy storage capacitor through the lead, and energy feedback is achieved.

The utility model provides multi-component resin automatic metering and feeding equipment which comprises a bottom plate, a plurality of universal wheels which are arranged at the bottom of the bottom plate in an array and are used for realizing flexible movement, a fixture which is arranged on the back side of the bottom plate and is used for positioning a foreign object, and a circulating seat arranged on the bottom plate, the multi-component resin automatic metering and feeding system comprises a fixture, a circulating seat arranged on the fixture, a plurality of receiving vessels circumferentially distributed on the circulating seat, a funnel mounted at the top of the fixture, a quantity control part arranged on the fixture, and an adjusting mechanism arranged on the fixture and the quantity control part, and the multi-component resin automatic metering and feeding system is simple and convenient in structure and low in cost; and the component proportion of the final multi-component resin product can be ensured to be in an optimal state, so that the quality and the use effect of the produced resin product are ensured.

The invention discloses a POE-EVA photovoltaic adhesive tape recovery process, and belongs to the field of plastic product recovery, and the POE-EVA photovoltaic adhesive tape recovery process comprises the following steps: S1, material preparation: selecting materials and removing impurities; s2, pretreatment, wherein the selected materials are put into a crusher to be crushed; s3, pretreatment: putting the materials into a closed container, and extruding, crushing and melting the materials; s4, sheet discharging: putting the materials into an extruding machine, and extruding to obtain sheets; and S5, a finished product is obtained, specifically, the discharged material is placed in a forming machine to be crushed and formed, so that the performance of the originally stiff photovoltaic edge strip can be changed, the elasticity, fogging performance and tensile performance of the material are improved, the material is easier to mix, other reagents can be conveniently added subsequently to change the performance, and the photovoltaic edge strip which is originally recycled and is difficult to reprocess and utilize is changed into a finished product. The raw materials are converted into multi-purpose raw materials, so that resource waste is avoided while recycling and pollution prevention are achieved.

The present invention discloses an air cooler, including an air cooler body, wherein a strong convection circulation fan is arranged near the upper end of the interior of the air cooler body, and circulating water composite fin tubes and quenching medium composite fin tubes are arranged inside the air cooler body, wherein the circulating water composite fin tubes are located at the upper end of the quenching medium composite fin tubes, a throttle valve and a discharge valve are arranged on the outer surface of one side of the air cooler body, and the throttle valve is located on one side of the discharge valve, a support foot is fixedly connected to the outer surface of the lower end of the air cooler body near the edge, and a water receiving pan is movably connected to the outer surface of the lower end of the air cooler body, and a fixing plate is fixedly connected to the outer surface of the water receiving pan near the upper end. The present invention can change the operating effect of the air cooler by adjusting the position of the strong convection circulation fan, has a simple structure, is convenient for users to disassemble and clean the water receiving pan, is convenient for users to operate, and is relatively practical.

The invention relates to a dielectric punching type photonic band gap packaging antenna and a preparation method thereof, belongs to the technical field of packaging antennas, and solves the problem that the process of enabling the resonant frequency of the antenna to fall within a photonic band gap range of the existing dielectric punching type photonic band gap packaging antenna is relatively complicated. The dielectric punching type photonic band gap packaging antenna comprises a reconstructed wafer and a substrate which are sequentially arranged from bottom to top, a floor metal layer is arranged between the substrate and the reconstructed wafer, a patch antenna is arranged on the upper surface of the substrate, an air hole and a flow channel are formed in the substrate, the air hole penetrates through the upper surface and the lower surface of the substrate, and the flow channel is communicated with the reconstructed wafer. A flow channel medium different from the substrate medium is arranged in the flow channel, and the air holes are not communicated with the flow channel. According to the invention, the channel structure is arranged in the substrate, and the channel medium different from the matrix medium is filled in the channel, so that the dielectric constant of the substrate medium is controllable, the resonant frequency of the antenna is flexible and controllable, and the resonant frequency of the antenna can be more conveniently regulated and controlled to fall into the photonic band gap.

The application discloses a kind of reward methods based on pipeline transportation particle deposition rate and energy consumption constraint.The method combines and constructs into reward function with key parameters such as particle deposition rate in pipeline, inlet flow rate and pipeline pressure drop, and trains neural network based on the reward function to obtain suitable control strategy, so as to achieve the purpose of reducing deposition and optimizing flow state.The application solves the problem that deposition inhibition effect and system energy consumption optimization cannot be considered simultaneously in the existing particle deposition control method in pipeline.Through the continuous interaction of artificial deep neural network and flow field numerical simulation environment, network parameters are dynamically updated, and the optimal control strategy is gradually obtained.And accordingly adjust inlet fluid velocity, change the flow state in pipe, realize the effective inhibition of particle deposition.Through the reward mechanism based on particle deposition rate and energy consumption, deposition can be effectively reduced and eliminated, flow stability is improved, and the effect of reducing deposition is better than that of traditional method.

The invention discloses an energy-saving pressurizing and heating integrated system suitable for a high-altitude area, and relates to the technical field of plateau environment safeguard, and the energy-saving pressurizing and heating integrated system comprises a distributed compressor unit which is formed by connecting a plurality of independent low-power air compressors in parallel and is used for jointly providing pressurized air for a closed cabin; the integrated heat exchange pipeline network comprises a main air supply pipe and a wall-embedded heat exchange coil pipe, and the main air supply pipe is connected with an air outlet of the distributed compressor unit and the closed cabin; the wall-embedded heat exchange coil pipe is laid inside or on the surface of an enclosure structure of the closed cabin, an inlet of the wall-embedded heat exchange coil pipe is communicated with the main air supply pipe, and an outlet of the wall-embedded heat exchange coil pipe is led to the inner space of the closed cabin. The coil pipes laid in the wall body and the floor are directly used for increasing the surface temperature of the cabin body, radiant heating is achieved, and heat originally needing to be dissipated through additional energy consumption is effectively utilized.

A composite clay material is described having a clay fraction of at least 35 wt% and an additive comprising a gelatin glue fraction and / or a gelling agent fraction and an acid fraction.

The invention discloses a mineral-derived non-water-soluble medium element fertilizer and a preparation method thereof, and belongs to the technical field of mineral fertilizers, the mineral-derived non-water-soluble medium element fertilizer comprises granulated electric furnace phosphorus slag powder and molasses; the mass fraction of the molasses is 1%-10%. The invention has the advantages that: the integrity of the fertilizer granules can reach 70% or more, the fertilizer granules are easy to disintegrate when encountering water and easy to absorb, and the surfaces of the fertilizer granules cannot be hardened even if the fertilizer granules are stored for a long time.

The invention discloses a dovetail groove deburring device, and relates to the technical field of dovetail groove machining, the dovetail groove deburring device comprises a machine tool, the upper surface of the machine tool is fixedly connected with an auxiliary frame I, the interior of the auxiliary frame I is fixedly connected with guide rails, the number of the guide rails is two, and the guide rails are distributed up and down on the same vertical plane; the device can be suitable for dovetail grooves with different inner wall inclination angles, burrs on the surfaces of the dovetail grooves can be removed, the universality of the device is improved, machining parameters can be optimized, the dovetail grooves can be better attached to the surfaces of the dovetail grooves, and therefore the deburring effect is improved; lubricating oil can be evenly distributed on the surface of the guide rail, frictional resistance of the sliding block when the sliding block moves on the guide rail is reduced, movement precision and stability of the sliding block are improved, cooling liquid can evenly and effectively cover the whole machining area, local overheating or insufficient cooling is avoided, and quality and precision of the machined surface are improved.

The invention relates to a preparation method and application of a gemini-based low-foam ether ester nonionic surfactant, and the preparation method of the gemini-based low-foam ether ester nonionic surfactant comprises the following steps: 1, mixing linoleic acid and polyethylene glycol dilaurate, adding a catalyst A, adding a solvent B, carrying out nitrogen replacement, and carrying out a reaction to obtain a gemini-based low-foam ether ester nonionic surfactant; the reaction is finished until no water is generated in the reaction container, and a reaction solution is obtained; and step 2, evaporating out liquid from the reaction solution to obtain the gemini-based low-foam ether ester nonionic surfactant. The invention also discloses the application of the gemini-based low-foam ether ester nonionic surfactant in a coating. The gemini-based low-foam ether ester nonionic surfactant prepared by the method disclosed by the invention can solve the problem that the stability of the existing surfactant in an acid medium is slightly poor. And by adding the ether ester nonionic surfactant, the problems of poor water resistance, poor glossiness and the like of the coating are solved.

The invention discloses a circularly polarized TADF material based on carbon-nitrogen axial chirality, and belongs to the field of organic luminescent materials. The preparation method of the carbon-nitrogen axial chirality circular polarization TADF material comprises the following steps: mixing C1 and C2 in glacial acetic acid, and reacting to obtain C3; c3, C4 and a catalyst are mixed in an organic solvent and react to obtain C5; mixing C5, C6 and a catalyst in an organic solvent, and reacting to obtain the circularly polarized TADF material based on carbon-nitrogen axial chirality. In the product structure designed by the invention, a phthalimide structure is used as an acceptor, and a chiral carbon-nitrogen axial chiral TADF molecule is constructed through resistance conversion isomerization of a substituent group on the ortho-position of carbazole and has an aggregation-induced emission property. According to the invention, [delta] ESTlt; the circular polarization TADF material with the concentration of 0.1 eV provides a carbon-nitrogen axial chiral measurement for the construction of chiral TADF molecules, and provides a new chiral parent nucleus for a circular polarization OLED device.

The present invention relates to a method for preparing mullite slurry for fiber-reinforced oxide-based composite materials, comprising the following steps: preparing Al2O3 sol, mixing aluminum source, deionized water, catalyst and additives in proportion, stirring and heating to obtain a stable sol; preparing SiO2 sol, mixing silicon source, anhydrous ethanol, deionized water and additives in proportion, adjusting pH value by catalyst, stirring and heating to obtain a stable sol; preparing mullite powder, mixing Al2O3 sol and SiO2 sol in proportion, stirring, heating and sintering to obtain a mullite block, and grinding the block to obtain mullite powder; preparing mullite slurry, mixing Al2O3 sol, SiO2 sol, mullite powder, dispersant and additives in proportion, and ball milling to obtain mullite slurry. The present invention has good rheological properties and can meet the requirements of preparing oxide-based composite material components by dipping or brushing.

The invention discloses a multifunctional badminton, and relates to the technical field of badminton devices. The invention comprises a ball head and a ball skirt, wherein the lower end of the ball skirt is connected to the ball head, the inner diameter of the ball skirt gradually increases from bottom to top, the ball skirt comprises a rib section and a guide section, the rib section is composed of a plurality of rib bodies, the guide section is provided with a plurality of meshes, the lower end of the guide section is connected to the rib section, and the upper end of the guide section is bent outward in an arc to form a bending portion for increasing wind resistance. The purpose of reducing the ball speed is achieved by the special design of the ball skirt, and it is convenient for the elderly, children and other groups to use.

The invention relates to the technical field of fracturing fluids, in particular to a multifunctional fracturing fluid composition as well as a preparation method and application thereof, and belongs to the technical field of shale development. The fracturing fluid composition comprises a micromolecular long-chain fatty acid anionic surfactant, a structure connecting agent, a carbon dioxide additive and water. By means of one-time fracturing, the requirement for integration of fracturing, swelling prevention and replacement for improving the recovery efficiency is met at the same time. The requirements for the viscosity of the fracturing fluid are different in different stages in the fracturing construction process on site, the viscosity change operability of conventional fracturing is poor, the fracturing fluid is mainly composed of polymers and large in reservoir damage, and the performance of the fracturing fluid can be adjusted according to the site requirements, the reservoir damage is low, and the fracturing fluid is suitable for large-scale production. And the dual purposes of fracturing and later-stage recovery efficiency improvement are achieved through one-time fracturing construction.

The invention discloses a preparation method of a direct injection type W-doped high-performance film, which belongs to the technical field of films and comprises the following steps: (1) selecting high-purity metal W and a high-purity C target as target materials; (2) selecting single crystal Si as a substrate material; (3) carrying out ultrasonic cleaning on the substrate material; (4) placing a substrate material on a sample holder, feeding the substrate material into a sputtering chamber, starting equipment, and when the vacuum degree reaches a certain value, starting a sputtering target material C target for pre-sputtering; (5) N2 is introduced, and a CN bottom layer film is prepared; after the preparation of the bottom-layer film is completed, adjusting process parameters for W doping, bombarding the obtained film by adopting argon ions, and repeating the step for multiple times according to needs; and (6) carrying out heat treatment. The preparation process is simple, the characteristics of the CN thin film are improved, and meanwhile, the required thin film can be flexibly prepared according to the requirements of electronic components through W doping.

The invention discloses a polybutene-1 alloy and a preparation method thereof, comprising the following steps: step 1, propylene is subjected to liquid phase bulk polymerization under the action of a catalyst system to obtain polypropylene particles carrying active centers; step 2, the polypropylene particles and butene-1 monomer are subjected to gas phase polymerization to obtain the polybutene-1 alloy. The polybutene-1 alloy produced by the method of the invention has a good spherical morphology, isotacticity ≥ 95%, a molecular weight distribution controllable within 5-10, a Shore hardness controllable within 60-38, is soft plastic, has excellent impact resistance, and does not generate three wastes in a continuous polymerization process, is clean and environmentally friendly, and belongs to the field of green chemistry.

The invention discloses an exploration positioning device for engineering geology, which comprises a drilling machine and a drilling rod arranged on the drilling machine, a drilling box is arranged at the top of the drilling rod, a positioning assembly is arranged on the side edge of the drilling box, the positioning assembly comprises a roller, an angle sensor and a bracket, the bracket is fixedly connected with the drilling box, and the roller is arranged on the drilling box. The roller and the angle sensor are both arranged on the support, a supporting shaft set is arranged at the center of the roller in a penetrating mode, the two ends of the supporting shaft set are connected with the support in a penetrating mode through bearings, the ends of the supporting shaft set are connected with an end shaft of the angle sensor, and the angle sensor is electrically connected with a controller of the drilling machine. The roller is arranged and is in rolling contact with the drilling machine, meanwhile, the angle sensor is arranged, the convex shaft of the angle sensor is connected with the center shaft of the roller, the number of rotation turns of the roller can be monitored in real time, calculation is conducted in cooperation with the perimeter of the roller, then the descending depth of a drill rod is obtained, and positioning of a drill bit is achieved.

The invention provides a frequency self-adaptive shock absorber, a shock absorber piston, a chassis system and a vehicle, and aims to solve the problems that the shock absorption effect of the vehicle is poor, and particularly, the vibration of the vehicle is obvious when the vehicle is subjected to high-frequency vibration so as to improve the driving and riding comfort of the vehicle. The frequency self-adaptive shock absorber comprises a cylinder barrel, an oil storage cavity and a piston and further comprises a buffering cavity formed in the piston, a valve assembly dividing the buffering cavity into a left buffering cavity and a right buffering cavity is arranged in the buffering cavity, one end of the valve assembly is in sealing fit with the buffering cavity, and the other end of the valve assembly is also in sealing fit with the buffering cavity. The buffer cavities are provided with oil outlet holes formed between the two ends of the valve assembly, the valve assembly can move along the buffer cavities, the valve assembly is provided with a first reset elastic piece enabling the valve assembly to reset, and the pressed area, located on one side of the left buffer cavity, of the valve assembly is smaller than or equal to the pressed area, located on one side of the right buffer cavity, of the valve assembly. And a sliding block which is in sliding and sealing fit with the right buffer cavity is arranged in the right buffer cavity.

The utility model discloses a motor controller, and relates to the technical field of motor design, the motor controller comprises a housing, a circuit board, a control module and a power module, the housing is internally provided with a cavity; the circuit board is accommodated in the accommodating cavity; the control module is arranged on one side of the circuit board and electrically connected with the circuit board. The control module comprises a first function switch and a second function switch. The power module is arranged on the side, away from the control module, of the circuit board and electrically connected with the circuit board. According to the utility model, the regulation and control capability of the motor controller is improved, and rapid switching of two different function modules can be realized.

The utility model relates to the field of microphone supports, and discloses a length-adjustable microphone connecting device which comprises a supporting rod, a first connecting arm is rotatably installed at the right end of the supporting rod, a second connecting arm is rotatably installed at the end, away from the supporting rod, of the first connecting arm, and an adjusting disc is rotatably installed on the front side of the end, away from the first connecting arm, of the second connecting arm. A fixing seat is arranged on the surface of the front side of the adjusting disc, a microphone is fixed to the fixing seat, a first connecting arm is rotationally connected with a second connecting arm, the other end of the first connecting arm is rotationally connected with a supporting rod, and therefore the microphone can move up and down or left and right at the same time, and the height of the microphone and the distance between the microphone and a user can be changed; and the microphone is fixed on the adjusting disc, and the adjusting disc is also rotationally arranged, so that the angle of the microphone can be quickly changed, the microphone is enabled to directly face the mouth of a user, and the microphone is suitable for positions with different heights and lengths.

This invention discloses a low-frequency ventilation and noise reduction structure for a prefabricated substation, comprising a shell, multi-stage side-supported resonant sound absorbers, a main ventilation duct, a composite sound-absorbing layer, and a constrained damping layer. The shell has an air inlet and an air outlet. The main ventilation duct is formed inside the shell and runs through the airflow direction from the air inlet to the air outlet. The multi-stage side-supported resonant sound absorbers are located circumferentially or axially outside the main ventilation duct and are connected to the main ventilation duct through a neck channel. The composite sound-absorbing layer is located on the inner wall of the main ventilation duct, and the constrained damping layer is located on the inner side of the shell. Each stage of the side-supported resonant sound absorber has a different cavity volume, neck cross-sectional area, and equivalent neck length to absorb noise in different low-frequency bands. This invention, while maintaining the unobstructed ventilation and heat dissipation channels of the prefabricated substation, can achieve multi-peak coupling noise reduction for low-frequency noise in the 50~200Hz range, while also considering low voltage loss, compact structure, convenient installation, and adaptability to outdoor operation.

The invention discloses a pill with alcohol-relief and liver-protection effects and a preparation method thereof, belonging to the technical field of traditional Chinese medicine preparation. The pill comprises, by weight, 5-8 parts of hawthorn, 8-12 parts of dried tangerine peel, 10-15 parts of yam, 8-12 parts of cornus fruit, 10-15 parts of atractylodes macrocephala, 4-8 parts of ginseng, 12-16 parts of liquorice, 10-15 parts of codonopsis pilosula, 10-15 parts of ligusticum chuanxiong, 4-7 parts of angelica, 6-10 parts of chrysanthemum, 5-8 parts of momordica grosvenori and 8-13 parts of white peony root. The raw medicinal materials used in the present invention are compatible with each other. Hawthorn, tangerine peel, yam, cornus fruit, atractylodes, ginseng, codonopsis, ligusticum chuanxiong and licorice are matched with each other through roasting and decocting, which can play the greatest role, can alleviate the toxicity of the drug, and can stimulate the original activity of the drug, enhance the efficacy of the drug, and change the performance of the drug; 3. The present invention crushes the decocted medicinal materials, and then adds the enzymatic stock solution to the powder, so that the macromolecules in the stock solution are decomposed into small molecules, so that the effective components are precipitated, and the combination with the powder can be more conducive to human body absorption and increase the efficacy.