64results about How to "Improve product performance" patented technology

The invention relates to the technical field of vacuum coating, in particular to a vacuum coating machine capable of improving coating purity, which comprises a bearing frame and a coating cavity mounted in the bearing frame, and the coating cavity is of an inverted conical structure; a rotary driving rod is mounted in the middle of the upper part of the coating cavity in a penetrating manner, and a non-contact transmission assembly is mounted above a main mounting rod, so that friction caused by contact is avoided; the interior of the lower portion of the bearing frame is connected with the evaporation source carrying table through a rotary lifting control mechanism. According to the vacuum coating machine capable of improving the coating purity, the cleanliness of a coating area can be improved through the non-contact transmission assembly, so that the coating purity and the product performance can be further improved, airflow generated by pressure difference can be reduced through the arrangement of the hollow interlayer groove, and the situation that the purity and the adhesive force of a formed film are affected due to the fact that tiny dust particles are raised is avoided; therefore, the cleanliness of the coating area can be further improved, and the coating purity is further improved.

The invention provides an efficiency simulation method and device for a speed reducer of an electric drive system. The method comprises the following steps: constructing a speed reducer simulation model; performing dynamic simulation on the speed reducer under the set working condition to obtain simulation data; constructing a speed reducer system efficiency simulation platform according to the simulation data; performing simulation calculation according to the speed reducer system efficiency simulation platform to obtain a simulation calculation result; according to the speed reducer system efficiency simulation platform and the simulation calculation result, various types of losses are calculated; efficiency calculation is carried out according to a reducer system efficiency simulation platform and various types of losses, and reducer cycle working condition comprehensive efficiency is obtained; and when the comprehensive efficiency of the speed reducer cycle working condition reaches a preset efficiency target, outputting a speed reducer simulation model. The method and the device can comprehensively consider the actual working condition, optimize the design of the speed reducer to improve the comprehensive efficiency performance, improve the efficiency simulation precision of the speed reducer in the electric drive system, shorten the design iteration period and cost, and facilitate the improvement of the research and development efficiency and the overall performance of the product.

The invention discloses a chip tantalum capacitor and a packaging method thereof, the capacitor comprises a lead frame and a tantalum core, and the lead frame is connected with the tantalum core through a connecting part. The packaging method comprises the following steps: correspondingly connecting a lead frame, a connecting part and a tantalum core, and then coating a water-soluble polymer material on the connecting part; putting into a mold for mold pressing; soaking in water after mould pressing, taking out, washing and drying; and carrying out electroplating treatment to finish packaging of the tantalum capacitor. According to the invention, a layer of water-soluble polymeric membrane material is coated on the positive and negative electrode lead wire areas of the lead wire frame; the water-soluble polymer material has good adhesion and peelability, so that the epoxy mould pressing flash material can be effectively prevented from being tightly attached to the lead frame in the mould pressing process, the epoxy mould pressing flash material is effectively removed, particularly the flash material is prevented from being tightly attached to the lead frame, the production quality and the product performance are improved, and the production cost is reduced. And the step of treating the flash is omitted.

The utility model, which belongs to the technical field of the battery test, discloses a battery shell clamping leakage detection clamp and device comprising a base body and a cover body. The base body is used for supporting a battery shell, a first positioning assembly and a second positioning assembly are arranged on the base body, the first positioning assembly or the second positioning assembly is provided with an air inlet hole communicated with the interior of the battery shell, the first positioning assembly is used for abutting against and positioning the battery shell in the first direction, and the second positioning assembly is used for abutting against and positioning the battery shell in the second direction. The second positioning assembly is used for abutting against and positioning the battery shell in a second direction; and the cover body and the base body are used for abutting against and positioning the battery shell in a third direction. The battery shell clamping and leakage detecting clamp and device provided by the utility model are convenient to operate, simple in structure and wide in compatibility, and can test the sealing performance and the pressure endurance capability of battery shells of different models, so that the performance, the service life and the safety of batteries are guaranteed, and meanwhile, the one-time yield is improved.

The invention belongs to the technical field of carbon quantum dots, and discloses a metal-doped carbon quantum dot and a preparation method thereof, the preparation method comprises the following steps: 1) reacting o-phenylenediamine with 2, 5-dihydroxybenzaldehyde to obtain a Schiff base compound; 2) coordinating the Schiff base compound with metal to obtain a metal coordinated Schiff base compound; and 3) dissolving the metal-coordinated Schiff base compound in a solvent, then adding a carboxyl-containing compound, completely dissolving, carrying out heating reaction, after the reaction is finished, carrying out centrifugal separation, reserving supernate, dialyzing, and freeze-drying, so as to obtain the metal-doped carbon quantum dots. The Schiff base metal complex is used as a precursor, nitrogen atoms in Schiff base can form coordinate bonds with metal ions, the stability of the complex is improved through formation of the chemical bonds, the complex can be doped with metal with a stable structure, and it is ensured that the metal is doped to the center of the carbon quantum dot instead of the surface of the carbon quantum dot; therefore, high doping rate and better product performance are obtained.

The invention discloses a mold design method for a rubber part with a metal insert and a vulcanization molding process method thereof.The mold preparation method comprises the steps that firstly, a three-body type mold is designed according to the rubber part and comprises an upper mold, a middle mold and a lower mold, the middle mold, the upper mold and the lower mold are jointly positioned, and the middle mold and the lower mold are provided with glue overflowing grooves; 2, calculating the size of a mold cavity; step 3, mold preparation; the upper die, the middle die and the lower die are all made of 45 # steel, and the heat treatment hardness is 35-40 HRC; the roughness of the mold cavity part is 0.4, and the roughness of the matched part of the mold is 0.8. The vulcanization molding process method comprises the steps of rubber remilling, vulcanization molding, burr cleaning and inspection. Aiming at a rubber product containing an embedded metal ring, the problems of position control of an embedded part and difficulty in mold design are solved, and the problem of batch production is solved; the optimal product performance is ensured by the optimized vulcanization forming process; the environment-friendly effect is improved, and the waste rate is reduced.

The invention discloses a production method of an economical easy-to-form rare earth Ti microalloyed 700MPa-grade girder steel belt. The production method comprises the following steps: a steelmaking process; in the controlled rolling air cooling process, the heating temperature of the plate blank is controlled to be 1240-1270 DEG C, and the soaking time is controlled to be 20-30 min; 3 + 3 six-pass rolling is adopted for rough rolling of the plate blank, and the rolling reduction of the first pass is increased and controlled to be 35-40 mm; the temperature of an intermediate billet is controlled to be smaller than or equal to 980 DEG C, the thickness of the intermediate billet is controlled to be 55-60 mm, and the finish rolling temperature is controlled to be 830-860 DEG C; the cooling speed is controlled to be 15-30 DEG C / s, and the coiling temperature mainly considers the optimal TiC precipitation temperature and is controlled to be 590-620 DEG C; the performance of the steel strip meets the conditions that the yield strength is larger than or equal to 600 MPa, the tensile strength ranges from 700 MPa to 880 MPa, the ductility is larger than or equal to 14%, and the steel strip has good cold formability and meets the use requirements of customers.

The invention discloses a manufacturing method of an emulsion explosive. The emulsion explosive comprises a water-phase component, an oil-phase component and an additive, the water-phase component comprises ammonium nitrate, calcium nitrate, sodium nitrate and water; the oil phase component comprises fuel oil, paraffin and an emulsifier; the additives comprise a microbubble agent, a plasticizer and an anti-freezing agent; the method further comprises manufacturing equipment for manufacturing the emulsion explosive and manufacturing steps of the emulsion explosive. The manufacturing equipment comprises a four-station turntable, a five-station turntable, a mixing assembly, a treatment tank A assembled on the four-station turntable and a treatment tank B assembled on the five-station turntable, the preparation method comprises the steps of oil phase preparation, water phase preparation, emulsification and cooling. The emulsion explosive provided by the invention has excellent product performance, the emulsification efficiency and the automation degree during emulsion explosive manufacturing can be effectively improved through the manufacturing equipment and the manufacturing method, and the input cost of labor force is reduced.

The invention discloses a perfluoro-2-methyl-2-pentene synthesis device and a perfluorohexanone preparation system.The perfluoro-2-methyl-2-pentene synthesis device comprises a reaction kettle and a raw material tank, the surface of one side of the reaction kettle is fixedly connected with a material conveying pipe, and the other end of the material conveying pipe and the surface of one side of the raw material tank are fixedly connected with a vertical tubular dynamic reactor; the other end of the vertical tubular dynamic reactor is fixedly connected with a heat exchanger, the surface of the other side of the heat exchanger is fixedly connected with a storage tank, and an auxiliary device is arranged on the surface of the conveying pipe. When the device is used for producing perfluoro-2-methyl-2-pentene gas, the conveying pipe can be more conveniently and efficiently maintained; and the inner wall of the conveying pipe is not easy to excessively adhere with catalyst impurities, the purity of the catalytic gas is further improved, and the catalytic gas can be more efficiently mixed and reacted with hexafluoropropylene, so that the finished product quality of the gas is improved, and the working efficiency and the using effect of the device are further improved.

The invention relates to the technical field of precious metal alloy material manufacturing, in particular to a process for hardening treatment of gold through micro-nano metal powder, which comprises the steps of blank charging, smelting, vacuum ingot casting, surface cleaning, rolling stretching and age hardening, product surface treatment, product welding and the like. The method has the advantages that in the aspect of material selection, the micro-nano metal powder, such as titanium powder and cobalt powder, is diversified and is small in adding amount, various strengthening mechanisms can be provided, and the economical efficiency is guaranteed. The smelting process is accurate, good vacuum and temperature control is achieved, and stirring is uniform after micro-nano metal powder is added. And rapidly solidifying the cast ingot by using a water-cooling copper mold, treating the surface by using aqua regia and the like, and drying. Midway annealing can be executed through rolling and stretching, and the process is flexible. Product manufacturing processes are diversified, and surface treatment includes polishing, electroplating, coloring and the like. Advanced modes such as laser are adopted for welding to avoid hardness reduction. According to the process, the gold hardening treatment effect and quality are improved from multiple aspects, different requirements are met, and wide application prospects are achieved.

The invention discloses a green low-carbon production method of an HG785 steel plate by replacing hardening and tempering with direct quenching and tempering, the thickness of the steel plate is 30-50mm, and the production method comprises the following steps: smelting and continuously casting various components according to a reasonable proportion; heating and rolling; directly quenching; two-phase region coupling tempering; and after discharging, performing air cooling or water mist cooling to room temperature to obtain a finished steel plate. The production method provided by the invention is high in universality, low in modification requirement on an existing medium-thickness plate production line (with accelerated cooling and tempering capabilities), easy to realize industrial large-scale production and remarkable in economic benefit and social benefit; through the collaborative design of'component fine adjustment and gradient quenching + two-phase region coupling tempering ', the mechanical property of the steel plate comprehensively reaches the standard (the yield strength is larger than or equal to 785 MPa, and the impact energy stability at the temperature of-40 DEG C is larger than or equal to 80 J) while greenness and low carbon are achieved, it is proved that'green production and product performance improvement can be synchronously achieved', and the practicability and popularization value of the green low-carbon technology are further enhanced.

The utility model discloses a kind of composite material forming is perfused epoxy resin system, belong to composite material forming technical field, the composite material forming is perfused epoxy resin system including reaction kettle, intermittent adjusting mechanism and suction bubble subassembly;Intermittent adjusting mechanism includes support, first motor, disc, male shaft, moving plate, arc groove and stirring device;Suction bubble subassembly includes multiple movable grooves, floating ring, lightweight spring, suction bubble plate, suction bubble mouth, air duct and suction bubble machine.The composite material forming is perfused epoxy resin system by intermittent stirring to avoid local overheating, maintain resin low viscosity state;By double-motor design realizes motion and stirring decoupling, accurately controls reaction condition;Self-adapting suction bubble mouth is close to liquid level, in combination with negative pressure suction, significantly reduce micro-bubble residue, improve composite material compactness, solve the problem, such as uneven mixing, bubble residue in traditional epoxy resin perfusion, significantly improve composite material forming efficiency and product performance.

The invention discloses a preparation method of a tableted food and the tableted food, and relates to the technical field of food processing.The method comprises the steps that raw materials of the tableted food are obtained, and the raw materials comprise an active ingredient embedding body, a sustained-release material and auxiliary materials; wherein the auxiliary material has the characteristics of pressure resistance and / or heat resistance; the raw materials are tableted, and the tableted food is prepared; wherein the tablet food comprises an inner layer, a middle layer wrapping the inner layer and an outer layer wrapping the middle layer, the inner layer comprises the active ingredient embedding body, the middle layer comprises the sustained-release material, and the outer layer comprises the auxiliary material. According to the scheme, through combination of a double-layer or multi-layer tabletting technology and a probiotic microcapsule embedding technology, the probiotics can be protected from being influenced by mechanical stress and temperature change, and the activity of the probiotics in production and storage is greatly improved, so that the functionality and stability of the product are better guaranteed.

This utility model relates to the technical field of electronic atomizer bodies, and discloses an electronic atomizer with colored lights, including a housing, an end cap on the top of the housing, an end cap slidably connected to the outer wall of the end cap, a connecting seat fixedly connected to the top of the end cap, an inhaler head slidably connected inside the connecting seat, an LED strip wrapped around the outer wall of the housing, a battery at the bottom of the housing, and an electrical connection between the LED strip and the battery. A disassembly / assembly assembly is provided inside the connecting seat; the disassembly / assembly assembly includes a slide rod and a locking block, with the outer wall of the slide rod slidably connected inside the connecting seat. In this utility model, the LED strip is activated simultaneously with the atomizer, creating an atmospheric user experience and enhancing the product's fun factor. Furthermore, the ingenious linkage between the rotating sleeve, the arc-shaped push plate, and the slide rod greatly improves the efficiency of inhaler head disassembly and assembly, bringing great convenience to users in daily use.

The utility model provides a sliding door and window hooked rabbet part heat preservation structure and a sliding door and window, the sliding door and window hooked rabbet part heat preservation structure comprises an inner hooked rabbet and an outer hooked rabbet, the inner hooked rabbet comprises an indoor side hooked rabbet sash profile of an indoor side door sash and an inner heat insulation cover plate, and the inner heat insulation cover plate is provided with a first hook part; the outer hooked rabbet comprises an outdoor side hooked rabbet sash profile of the outdoor side door sash and an outer heat insulation cover plate, and a second hook part is arranged on the outdoor side hooked rabbet sash profile or the outer heat insulation cover plate; in the indoor side hooked rabbet sash sectional material and the outdoor side hooked rabbet sash sectional material, at least the indoor side hooked rabbet sash sectional material is a broken bridge sectional material; when the indoor side door sash and the outdoor side door sash are closed, the first hook part is opposite to the second hook part, the indoor side hooked rabbet sash profile, the inner heat insulation cover plate, the outer heat insulation cover plate and the outdoor side hooked rabbet sash profile are sequentially and oppositely distributed in the direction from the indoor to the outdoor, and heat is prevented from being transmitted from the indoor to the outdoor. The heat insulation structure is a multiple heat insulation structure in the indoor and outdoor direction, and the heat insulation capacity of the hooked rabbet part is greatly improved.

The invention discloses soldering paste resistant to high-temperature post-soldering residues and a preparation method of the soldering paste. The soldering paste comprises soldering flux and paste flux according to the weight ratio of (8-9): (1-2). The solder comprises a tin-bismuth series alloy and a titanate coupling agent modified halloysite nanotube. On the basis of the flux paste, the flux paste comprises the following raw materials in parts by weight: 35-65 parts of composite rosin; 35 to 55 parts of a solvent; 5-15 parts of tartaric acid; 5-10 parts of a thickening agent; 1-3 parts of a corrosion inhibitor; 2-4 parts of an antioxidant; and 2-3 parts of oleyl alcohol polyoxyethylene ether. The high-temperature-resistant soldering paste left after welding has the advantages of being resistant to high temperature, low in splashing and good in wettability, the welding effect is hard and firm, and welding spots are full and bright. In addition, the preparation method provided by the invention has the advantages of being simple, easy to operate and beneficial to large-scale production and application.

The utility model relates to a combined type tubular mixer, a flow limiting gasket and a supporting gasket. The mixer comprises a first pipe body and a second pipe body, a second turbulent flow rod is arranged in the second pipe body; a third pipe body; the pipe bodies are sequentially connected in series to form a mixer inner cavity with a smooth inner wall; the flow limiting gasket is arranged between the first pipe body and the second pipe body; a through hole is formed in the flow limiting gasket; the supporting gasket is arranged between the second pipe body and the third pipe body; the supporting gasket comprises a connecting port and a logistics port; the material inlet is formed in one end of the first pipe body; the material outlet is formed in one end of the third pipe body. The technical problem to be solved is how to provide a suitable device for the continuity of diazotization reaction and coupling reaction of solid slurry. The mixer overcomes the defect that a microreactor is easy to block; meanwhile, the flowing track of the fluid is changed, the retention time of the fluid is prolonged, materials are mixed more sufficiently, the reaction is faster, and the reaction yield and the product performance are improved.

The invention relates to the technical field of metal plate and strip rolling forming, in particular to a pre-rolling bearing platform heat preservation and heating device which can evenly apply and keep a certain temperature to a rolled blank on a pre-rolling bearing platform so as to avoid the situation that the blank makes contact with a room temperature platform before rolling, the cooling speed is too high, and the hot rolling forming result is affected. The device comprises a bearing platform main body, a heating coil, a heating coil bracket, electric control equipment and an infrared temperature sensor. A heating coil supported by a heating coil support is placed in the bearing platform body, an interface for electrifying the heating coil is reserved on the heating coil support, an infrared temperature sensor is arranged above an inlet of the heating coil support and feeds back temperature information to electric control equipment in real time and corrects the temperature information, and the heating coil support is connected with the bearing platform body through screws. The whole device is fixed to a rack through bolts. According to the invention, a certain temperature can be provided or kept for the blank before rolling of plates and strips, so that the purpose of improving the hot rolling forming quality and the comprehensive performance of products is achieved.

The invention discloses a lithium ion battery NP ratio optimization method and evaluation method and a lithium ion battery, and the method comprises the steps: determining the grading standard of positive and negative pole pieces according to the design information of the battery; sampling the coated, rolled and cut positive and negative pole pieces by adopting a'nine-point sampling method-three-time sampling 'by using a sampler; numbering and weighing the sampled positive and negative pole pieces, recording the weight of the corresponding pole pieces, calculating the average value of the weight of the sampled pole pieces, and marking the gears of the positive and negative pole pieces according to a grading standard; carrying out matched winding on the positive and negative pole pieces according to the pole piece gears and the set gear matching standard and the pole piece matching principle; evaluating the NP ratio range of the positive electrode and the negative electrode of the battery and producing the battery based on the optimization method of the NP ratio of the lithium ion battery; the problem that the NP ratio deviation is large is effectively solved, the actual NP ratio range of the battery is more concentrated and is close to the ideal NP ratio, and the NP ratio accuracy, the product production stability and the product performance of the lithium ion battery can be improved.

The invention discloses a power module with pins withdrawn from the front side, and belongs to the technical field of module packaging. Comprising a metalized ceramic substrate; the metal piece comprises a flat welding bottom surface and a flat welding surface, and the welding bottom surface of the metal piece is connected with the emitting electrode of the metalized ceramic substrate through ultrasonic welding; and the PIN is vertically arranged on the welding surface of the metal piece through ultrasonic welding. The technical scheme has the beneficial effects that the welding strength and flatness are ensured, the product layout space is saved, and the yield and the product performance are improved.

The invention relates to the technical field of cosmetics, in particular to soothing and sunscreen spray as well as a preparation method and application thereof. The spray is prepared from the following raw materials: cyclopentasiloxane, octyl polymethylsiloxane, polydimethylsiloxane, butanediol, polymethylsilsesquioxane, ethylhexyl salicylate, diethylaminohydroxybenzoyl hexyl benzoate, octocrylene, lauryl polyethylene glycol (PEG)-10 tri (trimethylsiloxy) silyl ethyl polydimethylsiloxane, ethylhexyl triazinone, an organic solvent, an organic solvent and a solvent. The composition is prepared from herba centellae extract, radix gentianae extract and water. The spray prepared by the invention has excellent effects of soothing the skin, blocking the sun and preventing the skin from dullness.

This invention belongs to the field of ceramic equipment manufacturing technology, and discloses a metallized ceramic shell for a vacuum interrupter and its processing technology. The process uses low-sodium α-alumina with 0.5~1μm grain size as raw material, and acid washing improves its chemical purity and grain boundary stability. During granulation, the moisture content is controlled to ≤0.1%, and homogenization is used to remove iron and eliminate conductive impurities. A drying process is added between pressing and turning to improve processing precision. Through programmed temperature sintering combined with atmosphere control, the crystal structure is optimized and organic matter and gases are expelled, avoiding closed pore defects. After firing, polishing reduces surface roughness and prevents dust adsorption and conductivity. The glazing process uses bentonite and silica to adjust the glaze viscosity, ensuring uniform glaze coverage and matching the thermal expansion of the ceramic body, improving the outer surface insulation performance. The synergistic effect of each step comprehensively improves the purity, density, and surface quality of the ceramic shell, effectively meeting the stringent insulation strength requirements of high-voltage vacuum interrupters.

The utility model discloses a device for preparing clean high-grade fluororubber, which is characterized in that an output port of a raw material container (8) is connected with an input port I (9) of a polymerization reaction kettle (2) through a compressor (1), and an output port of an auxiliary material container (11) is communicated with an input port II (10) of the polymerization reaction kettle (2); an output port at the bottom of the polymerization reaction kettle (2) is communicated with an input port III (12) at the upper part of the coagulation reaction kettle (3), an output port of the coagulant preparation barrel (4) is communicated with an input port IV (14) at the upper part of the coagulation reaction kettle (3) through a coagulant pump (13), and a stirrer (17) is vertically arranged in the coagulant preparation barrel (4); and an output port at the bottom of the condensation reaction kettle (3) is connected with a fluororubber finished product storage tank (15) through a cleaning device (5), a filtering device (6) and a drying device (7) in sequence. According to the utility model, the product performance of fluororubber is improved, and the environment can be effectively protected during preparation.

The invention provides an acrylic acid adhesive, a high-temperature-resistant protective film and an optical conductive film, and particularly relates to the technical field of conductive films. The acrylic acid adhesive is mainly obtained by UV curing of an isocyanate grafted acrylic acid polymer, a polyfunctional group crosslinking monomer, a photoinitiator and an optional auxiliary agent, the isocyanate grafted acrylic polymer is mainly obtained by carrying out grafting reaction on an isocyanate monomer and an acrylic polymer; the isocyanate monomer is an isocyanate monomer containing double bonds; the polyfunctional group cross-linking monomer comprises PGDA, TMPTA, HDDA or PO-NPGDA. The acrylic acid adhesive provided by the invention has excellent high temperature resistance and rapid curing characteristic, the traditional release material and curing step are omitted, the production cost is reduced, and the production process is simplified.

The invention relates to a method for determining a process coefficient of a three-dimensional wound core, which is used for establishing quantitative characterization of the process coefficient of the iron core based on the influence of an iron core filling coefficient on iron loss and the influence of each production process on the iron loss. The iron core filling coefficient is determined by taking the iron core stage number and the iron core column equivalent sheet width as input data, and the iron loss influence factors in each production process comprise the influence of shear stress in the cutting process on the iron loss, the influence of tensile stress in the winding process on the iron loss and the influence of stress removal in the annealing process on the iron loss. The influence of the iron loss is determined by iron loss test curve fitting under each stress condition. Therefore, on one hand, the influence of each process on the iron loss in the production process can be truly and effectively reflected in real time, and on the other hand, the real and reliable data of the process section is provided for the subsequent iron loss analysis of the user side, so that the accurate analysis of the user side is facilitated, and the determination of the filling coefficient gives consideration to the determination of the production efficiency; and cost reduction is considered in parameter setting.

The utility model relates to the field of vacuum coating devices, and discloses a PVD (Physical Vapor Deposition) vacuum coating device which comprises a box door, the box door is rotatably connected to the front side of the outer wall of a coating box through a hinge, a partition plate is fixed in the coating box, a voltage transmitter is arranged in an adjusting voltage box, a spraying hose is fixed at the output end of a liquid pump, and the spraying hose is connected with the liquid pump. And the spraying hose penetrates through the coating box and extends into the coating box, a spraying head is fixed to one end of the spraying hose, and a first driving motor is fixed to the rear side of the fixing plate. According to the utility model, through the cooperative use of the adjusting voltage box, the voltage transmitter, the liquid collecting box, the spraying hose and the spray head, the workpiece can be coated, and meanwhile, through the cooperative use of the fixing plate, the first driving motor and the rotating frame, the angle of the spray head can be adjusted, spraying coating at different angles can be realized, and the situation that part of areas are not coated is avoided; and it is ensured that the workpieces can be coated comprehensively and evenly, and the coating efficiency and the coating quality are improved.

The application discloses a preparation method of an ultra-high voltage AC / DC unequal-diameter cable soft joint, mainly including two core steps of inner semi-conductive shielding layer recovery and main insulation layer recovery. In the inner semi-conductive shielding layer recovery process, the conductor connection area is first wrapped with a shielding tape, and then is heated and shaped by using an inner shielding variable-diameter mold; the transition slope of the inner cavity of the mold is accurately matched with the transition slope of the conductor welding part, so that the interface contact characteristics are optimized and effective strength compensation is realized. In the main insulation layer recovery process, the extrusion crosslinking process is accurately divided into four stages of starting and filling, transition and forming, stable production, ending and deceleration, and the extrusion speed, heating temperature and mold pressure of each stage are controlled accurately in sections. The smooth filling, uniform coating and dense forming of the insulation material in the variable-diameter mold cavity are ensured, and the thermal degradation and structure defects of the material are effectively inhibited.

The present invention relates to a resin composition, a prepreg using the same, a metal foil laminate, a laminate sheet, and a printed circuit board, the resin composition comprising: (a) an epoxy resin containing a modified dicyclopentadiene (DCPD) epoxy resin; (b) an aliphatic benzoxazine resin; and (c) a curing agent.

The invention provides a quick-start effect optimization method for a low-power-consumption electronic product. The quick-start effect optimization method comprises the following steps: S1, starting: waking up equipment by any event; s2, the device reads the AD value of the current environment and looks up the AD-EV table according to the AD value to obtain the EV value of the current AD in the laboratory environment; s3, the coprocessor RISCV is started at the boot starting stage, an EV value is obtained, an ISP module is started, a gain value is analyzed, and a sensor SENSOR register is configured; s4, after the master control system-level chip SOC is started, obtaining first frame video data after SENSOR updates the exposure gain; s5, acquiring the current AD value and the stable value of the EV, and updating the current AD value and the stable value of the EV into the AD-EV table through the MTD node of the MTD subsystem, that is, the AD-EV table is updated after each time of starting, and the updating frequency is controllable; and S6, after the equipment completes all services, the equipment is shut down and waits for next start. The method well solves the problem that the first-frame image is abnormal due to the difference between the laboratory environment and the actual environment. And the product effect is better and better under the condition that the self-learning system is continuously quantized.