130results about How to "Obvious cost advantage" patented technology

The invention relates to the technical field of all-vanadium redox flow batteries, in particular to a sulfonated polybenzimidazole proton exchange membrane as well as a preparation method and application thereof. The proton exchange membrane structurally comprises a polybenzimidazole polymer main chain and a sulfonic acid group, the free volume of the polybenzimidazole polymer is regulated and controlled by synthesizing raw materials with different structures, and the polybenzimidazole proton exchange membrane is obtained by sulfonating the polybenzimidazole polymer. Aiming at the problems of cross permeation of vanadium ion electrolyte of a positive electrode and a negative electrode of the all-vanadium redox flow battery, capacity attenuation of the all-vanadium redox flow battery and low energy conversion efficiency, the preparation method comprises the following steps: constructing a polybenzimidazole polymer main chain by selecting raw materials with high rigidity and high free volume; the mechanical property of the polybenzimidazole membrane is improved while a rapid ion channel is constructed in the polymer membrane, and water molecules can be contained to limit swelling of a membrane material.

The invention discloses a preparation method of a coal gangue composite grouting material, which comprises the following steps: step 1, preparing coal gangue aggregate: drying crushed coal gangue, and screening to obtain the coal gangue aggregate consisting of fine aggregate and coarse aggregate; step 2, preparing a coal gangue gel material: uniformly mixing the crushed coal gangue with graphite, performing microwave activation, adding a chemical activator, mixing, and grinding to obtain the coal gangue gel material; and mixing the coal gangue gel material and the coal gangue aggregate, adding water, and uniformly stirring. According to the method, the technological process is simple and easy to implement, efficient utilization of mine solid waste is achieved, the mining cost is greatly reduced, the grouting filling material with the excellent mechanical property is successfully obtained, and progress and development of the coal gangue based grouting technology are powerfully promoted.

The invention belongs to the field of all-solid-state lithium ion battery positive electrode materials, and particularly relates to an amorphous-state high-ion-conductivity positive electrode material, a preparation method and application of the amorphous-state high-ion-conductivity positive electrode material in an all-solid-state lithium ion battery, and the chemical composition general formula of the positive electrode material is LixFeOClFx, xlt; liF and FeOCl raw materials in a corresponding proportion are synthesized by a high-energy ball milling method to obtain the LiF / FeOCl composite material. The material is mainly composed of an amorphous phase and has isotropy, and it is ensured that an efficient and stable ion transmission channel can be constructed under the cold pressing condition. The amorphous high-ionic-conductivity lithium iron oxide chlorine fluorine-based positive electrode material provided by the invention has high ionic conductivity, stable capacity output, good rate capability, excellent machining performance and low-humidity air stability, and is used as an all-solid-state lithium ion battery positive electrode material; meanwhile, the material is low in synthesis raw material cost and simple in synthesis process, and has a good industrial amplification prospect.

The invention relates to the technical field of battery thermal performance measurement, in particular to a method for measuring the specific heat capacity of an energy storage battery. The theoretical model is calibrated by monitoring the cooling curve of the battery so as to ensure that the heat transfer characteristic of the battery is accurately reflected. Then, constant-power heating is adopted, so that the thermal field of the battery reaches a quasi-steady state, and in the steady state, the temperature change is gradually consistent; and recording a temperature change curve in real time through a temperature acquisition instrument, and calculating the specific heat capacity of the battery in combination with the calibrated model and a constant power input condition. According to the method, only the voltage-stabilized power supply and the temperature acquisition instrument are needed, so that the cost is greatly reduced; the measurement precision is improved through temperature change curve analysis after model calibration, and the problems that in a traditional method, environmental interference is large, and precision is insufficient are solved; the time for reaching the quasi-steady state is shortened through constant-power heating, and the measurement process is accelerated. The method is suitable for various energy storage batteries, can meet the requirements of industries such as electric automobiles and electric energy storage on the thermal performance of the batteries, and has wide popularization value.

The invention relates to the technical field of agricultural information, and discloses an agricultural four-condition integrated monitoring system which comprises a vertical rod and a soil moisture content sensor, a control box is installed at the bottom end of the exterior of the vertical rod, a data acquisition module is arranged in the control box, an insect pest killing and recognition module is installed on the middle side of the exterior of the vertical rod, and a data acquisition module is arranged in the control box. The device comprises a vertical rod, a power supply device is installed on the upper side of the exterior of the vertical rod, a power supply unit is arranged in the power supply device, a lightning rod is fixedly connected to the top of the vertical rod, a transverse plate is fixedly connected to the upper side of the exterior of the vertical rod, and sensor detection equipment is fixedly connected to one side of the transverse plate. The weather, the soil moisture content, the insect pest situation and the seedling situation are subjected to a unified data interface, various data are visually viewed in a data chart and report visualization mode, agricultural managers can quickly access all related information through the unified data interface, the switching time between different systems or devices is shortened, and the decision making efficiency is improved.

The invention belongs to the field of organic silicon synthesis, and particularly relates to a preparation method of low-cost, low-ring-body and ultralow-viscosity dimethyl silicone oil, and the viscosity of the dimethyl silicone oil is smaller than or equal to 10 cSt. The preparation method comprises the following steps: firstly, adding a hydroxyl-terminated polydimethylsiloxane linear body, a chain stopper and an activated catalyst into a reaction kettle, and carrying out hydroxyl condensation and chain segment equilibrium reaction under a negative pressure condition to obtain a polymerization precursor; then adding an end-capping reagent into the polymerization precursor, carrying out chain segment rearrangement reaction, after the reaction is finished, adding a terminator and a quenching catalyst to obtain a polymerization intermediate, and further separating to obtain a target product. The preparation method provided by the invention has the advantages of simple process, mild conditions, 100% of raw material utilization rate, and no generation of cyclosiloxane, and is suitable for green industrial production of ultralow-viscosity methyl silicone oil.

The invention relates to the technical field of preparation of phase-change materials, in particular to a steel slag-based porous ceramic composite phase-change material and a preparation method thereof.According to the preparation process, a sacrificial template method and a foaming agent pore-forming method are combined, waste polyurethane foam and waste wood pulp sponge are used as templates, industrial solid wastes (steel slag, fly ash and rice hull ash) are used as raw materials, and the steel slag-based porous ceramic composite phase-change material is prepared. The steel slag-based porous ceramic is prepared. The steel slag-based porous ceramic composite phase change material is prepared by using the prepared steel slag-based porous ceramic as a carrier vacuum adsorption phase change material. According to the invention, resource utilization of wastes is promoted, and environmental pollution caused by industrial solid wastes, biomass wastes and plastic wastes is reduced. The steel slag-based porous ceramic with abundant pore structures and the steel slag-based porous ceramic composite phase change material with good thermal performance and thermal cycle performance are prepared by adjusting the proportion of the raw materials, the porosity of the porous template and the impregnation vacuum degree. The preparation method is simple and suitable for large-scale production.

The invention discloses a method for refining and recovering tail gas of hydrogen chloride. The method comprises the following steps: 1) compressing the tail gas to a high-pressure state through a compressor; (2) introducing the high-pressure gas obtained in the step (1) into a refining tower for separation, obtaining non-condensable gas containing HCl at the tower top, extracting a high-purity hydrogen chloride product from the tower, and obtaining a liquid phase containing organic matters at the tower kettle; and 3) feeding the non-condensable gas at the tower top of the refining tower to a downstream absorption unit, feeding the product hydrogen chloride in the tower to the periphery for supply, decompressing the liquid phase at the tower bottom, and returning to the upstream for recycling. The method can reduce 75% of energy consumption, finally realizes purification of hydrogen chloride gas containing non-condensable gas and organic matter impurities, reduces the amount of waste gas and the amount of byproduct hydrochloric acid, produces high-purity hydrogen chloride products with high added values, realizes efficient circulation of chlorine resources in a park, and has remarkable economic benefits and social benefits.

The invention relates to an anti-dazzle hardened film for the surface of a display screen and a preparation method and application of the anti-dazzle hardened film, the anti-dazzle hardened film comprises a base material layer and an adhesive layer coated on the base material layer, and the adhesive layer comprises 30.4-41.5% of acrylate oligomer; 4.6%-6.3% of an acrylate monomer; 2.0 to 3.0% of a photoinitiator; 1.0 to 2.0 percent of a leveling aid; 0.5%-1.0% of a dispersing aid; 1.2%-3.6% of main anti-dazzle particles; 0.2 to 0.4 percent of auxiliary anti-dazzle particles; 10.4 to 31.1 percent of hardening particles; 26.8 to 44.8% of an organic solvent; the main anti-dazzle particles are micron-sized silicon dioxide particles modified by a silane coupling agent, the auxiliary anti-dazzle particles are nano-sized silicon dioxide particles modified by a silane coupling agent, and the hardening particles are nano-sized aluminum oxide particles. The anti-dazzle hardened film is high in definition, high in hardness and high in wear resistance.

The invention discloses a method for adjusting the skin color of a person in a display screen, which comprises the following steps of: firstly, determining the scene classification credibility of an image currently displayed on the display screen, then determining whether the currently displayed image comprises the person according to the scene classification credibility, if so, carrying out color space sum conversion on the image to obtain an HSV value, and if not, carrying out color space sum conversion on the HSV value; determining the skin color category of the person according to the HSV value, and finally adjusting the HSV value based on a preset scheme according to the skin color category to complete skin color adjustment. The method is high in real-time performance, skin color enhancement can be dynamically carried out according to the current display content, and the character skin color display effect can be effectively improved.

The invention relates to the technical field of polymer composite material processing, and discloses a conductive PPE / PA alloy material with a flame retardant effect, which is prepared from the following components in parts by weight: 30 to 45 parts of PPE resin, 28 to 41 parts of PA resin, 5 to 7 parts of compatilizer PPH, 11 to 15 parts of compatilizer GPM, 0.2 to 0.6 part of lubricant LY-320, 0.2 to 0.6 part of lubricant C181, 0.2 to 0.7 part of lubricant S370, 0.2 to 0.6 part of composite antioxidant, 1 to 10 parts of conductive additive and 5 to 10 parts of flame retardant. The conductive auxiliary agent is a carbon nanotube and / or conductive carbon black; the carbon nano tube is a single-wall carbon nano tube and / or a multi-wall carbon nano tube. The conductive PPE / PA alloy material obtained by the invention has better impact toughness, high fluidity, heat resistance and good flame retardance.

The utility model discloses a kind of lifting rod structure and shower, the lifting function of bar can be realized, and product can be designed thinner. Among them, lifting rod structure includes wall seat, bar, limiting piece, elastic member and operating part;The wall seat is pre-fixed on mounting surface;The bar is along with the wall seat sliding fit along up-down direction;The limiting piece is along with the bar sliding fit in left-right direction, for when realizing the locking of up-down direction when abutting the wall seat;The elastic member is arranged in the bar and acts on the limiting piece, to make the limiting piece abut the wall seat;The operating part is parallelly arranged with the movement direction of the limiting piece, and telescopic cooperation is in the side of the bar;The operating part and the limiting piece linkage to realize user through the operating part drive the limiting piece and the wall seat separate.

The application discloses application of a naphthalene nitrile derivative in preparation of an antitumor pharmaceutical composition, in particular, application of a 2-(imino)-naphthalene nitrile derivative in preparation of an antitumor pharmaceutical composition. The 2-(imino)-naphthalene nitrile derivative provided by the application has a significant inhibiting effect on colon cancer, liver cancer, lung cancer, prostate cancer, cervical cancer, neuroglioma and breast cancer, exhibits excellent antitumor characteristics, can be used as a leading drug molecule for resisting tumors, and has a good development and application prospect in development of antitumor drugs.

The application discloses a preparation method of a silodosin key intermediate and belongs to the technical field of drug chemical synthesis. The silodosin key intermediate is prepared from indoline as raw material through halogenation, cyanation, N-benzoylpropylamine protection, substitution, amination, reduction and salt formation, and the silodosin key intermediate is compound 1. The synthesis line is novel, the raw reagents are easy to obtain or prepare, high-risk and high-pollution reagents are not used, the method is safe, environment-friendly, mild in reaction condition, easy and controllable to operate, the prepared silodosin key intermediate is good in purity, high in yield and high in atom utilization rate, and the industrial production problem of silodosin can be practically solved.

The present invention discloses a strong and tough soy protein isolate-based film and its preparation process and application using a pulsed electric field for precise control. The strong and tough soy protein isolate-based film is prepared by mixing a soy protein isolate solution, a dialdehyde starch solution and a polyvinyl alcohol solution, adjusting the pH to 8.5-11, reacting for 10-50 minutes at 60-100°C and under the action of a pulsed electric field, and pouring the product into a culture dish, and drying the obtained product; the soy protein isolate-based film prepared by the present invention has excellent mechanical properties compared to other biomass film materials (cellulose, starch and chitosan films), the tensile strength of the material can reach 18.3MPa, and the elongation at break can reach 240.5%, which is 631% and 654% higher than the tensile strength and toughness of the soy protein isolate film with the addition of a traditional glycerol plasticizer; the obtained soy protein isolate-based film can block 97%-100% of the ultraviolet transmittance (≤400nm).

The invention relates to a dissecting table for animal experiments. The dissecting table comprises a shell; the shell is formed by surrounding panels, the interior of the shell is hollow, and the two ends of the top and the two ends of the bottom of the shell are open. An operation chamber and an air collection chamber are arranged in the shell; the operation room is composed of a frustum-shaped enclosing part and a supporting part at the bottom end of the enclosing part. An air collecting hopper is arranged in the inner cavity of the shell and below the supporting part; a cavity directly defined by the air collecting hopper, the enclosure part, the supporting part and the shell is an air collecting chamber. The enclosing part and the supporting part are communicated with the air collecting hopper through the vent holes; the bottom end of the air collecting hopper is connected with a high-efficiency filter, the bottom end of the high-efficiency filter is communicated with a fan chamber arranged below the high-efficiency filter through an air guide pipe, an exhaust fan is arranged in the fan chamber, and the fan chamber is communicated with an exhaust pipe on the outer side of the shell through a pipeline. According to the dissecting table, due to the fact that the operation chamber and the air collecting chamber which are of special structures are adopted, odor brought by organisms in the dissecting process on the operation table top can be fully sucked and then exhausted through the exhaust pipe.

This invention discloses a method for preparing high-transparency tamarind polysaccharide gum through decolorization and deodorization. A combined purification process of enzymatic hydrolysis-sedimentation-chemical degradation-solvent washing-ultrafiltration is employed. Enzymatic hydrolysis degrades large molecules of proteins and fats in the extract into smaller molecules. Sodium hypochlorite is used for chemical degradation, oxidizing aldehydes and ketones in the extract into carboxylic acids. Finally, organic solvent washing and ultrafiltration purification remove impurities generated during enzymatic hydrolysis and chemical degradation, ultimately yielding high-transparency, odorless tamarind polysaccharide gum. The final product is white, with a transmittance of up to 95.4% at a 1% concentration, and is completely odorless, significantly improving product quality. This preparation process is simple, operates under mild conditions, and is suitable for industrial production.

The utility model discloses an AC charging pile CP signal generating circuit, comprising a level conversion module and a push-pull output module, the level conversion module is used for converting a PWM signal output by an IO port of an MCU into a + / -12V CP signal, and the push-pull output module is connected to the level conversion module and is used for driving high and low level switching of the CP signal. The level conversion module comprises a resistor R1, the left end of the resistor R1 is connected with PWM signals output by an IO port of the MCU, the right end of the resistor R1 is connected with base electrodes of triodes Q2 and Q3, emitting electrodes of the triodes Q2 and Q3 are connected and connected with the lower end of a resistor R2 and the upper end of a resistor R3, the lower end of the resistor R2 is connected with the upper end of the resistor R3, the upper end of the resistor R2 is connected with a + 3.3 V power source, the lower end of the resistor R3 is grounded, and the lower end of the resistor R3 is grounded. The circuit provided by the utility model is simple, and the cost is lower.

The invention relates to a soil microorganism high-efficiency water purification filter material and a preparation process thereof, and aims to solve the problems of low removal efficiency, high cost, easiness in secondary pollution, insufficient affinity with soil microorganisms and the like of the existing microorganism filter material. The filter material is prepared by taking volcanic rock, activated carbon, bentonite and modified cellulose as main raw materials, combining the main raw materials according to a specific ratio, preparing porous particles by virtue of processes such as calcining, activating, mixing, granulating and sintering, and finally loading the porous particles by virtue of a microbial bacterial liquid. The product has a large specific surface area, good adsorption performance and high chemical stability, and can provide an excellent adhesion and growth environment for soil microorganisms. Experiments prove that the filter material can significantly improve the removal efficiency of pollutants such as COD, ammonia nitrogen and total phosphorus in sewage, and the filter material has the advantages of easily available raw materials, low cost and environmental friendliness, and is suitable for the fields of sewage treatment, ecological restoration and the like.

The invention provides a rosaxostat intermediate and a preparation method thereof, and relates to the technical field of organic synthesis. The preparation method comprises the following steps: condensing m-phenoxybenzaldehyde and amino acid under the catalysis of alkali to generate imine, reducing to obtain amine, and carrying out cyclization, hydrolysis, Friedel-Crafts acylation, ring opening, oxidation and esterification to obtain the target product. High-risk and high-pollution reagents are not used, safety and environment friendliness are achieved, reaction conditions are mild, operation is convenient and controllable, and the prepared rosaxostat intermediate is good in purity, high in yield, obvious in cost advantage and suitable for industrial production.

This invention discloses a method for preparing a low-absorption tantalum oxide thin film and its application in DWDM filters. The method includes the following steps: S1, placing the substrate in the reaction chamber of a mid-frequency magnetron sputtering system and evacuating the reaction chamber; S2, introducing argon and oxygen into the reaction chamber; S3, using a tantalum target, turning on the power of the mid-frequency magnetron sputtering system for pre-sputtering; S4, performing a second sputtering; S5, vacuum cooling to obtain a tantalum oxide thin film formed on the substrate. The tantalum oxide thin film prepared by this invention has an extinction coefficient k ≤ 5×10⁻⁶ in the 1550nm band, which is about two orders of magnitude lower than that of the prior art (k≈10⁻⁴). This invention does not require an ion source and can be achieved using only mid-frequency magnetron sputtering, resulting in low equipment requirements and significant cost advantages. A 100G DWDM filter made using the thin film prepared by this invention has an insertion loss ≤0.1 dB, which is better than the 0.2 dB of the prior art.

The invention discloses an underground direct evaporation type heat pump system of a geothermal well, and belongs to the technical field of heating and ventilation. The device comprises an underground heat exchange device, a compressor, an overground heat exchange device, a throttling device, a circulating water pump and a circulating water pipe, the underground heat exchange device is mounted in well water of the geothermal well and is used for directly exchanging heat with the well water of the geothermal well; the underground heat exchange device comprises a liquid supply pipe, an air suction pipe, an upper cavity and a lower cavity; the heat exchange thin pipes are used for conducting primary heat exchange on refrigerants in the heat exchange thin pipes and geothermal well water outside the heat exchange thin pipes. The lower cavity body is used for performing heat exchange on the refrigerant in the lower cavity body and well water of the geothermal well outside the lower cavity body again; the circulating water pump is installed on the circulating water pipe, the circulating water pipe is located on the periphery of the underground heat exchange device, and the circulating water pump and the circulating water pipe are used for internal circulation of well water of the geothermal well. The underground direct evaporation type heat pump system of the geothermal well is easy to manufacture, convenient to install and very obvious in cost advantage.

The invention provides a clamp for a loading and unloading robot and the loading and unloading robot, and the clamp comprises a sucker array used for sucking a target box body; the suction cup array is arranged on one side face of the clamp mounting plate, and the other side face of the clamp mounting plate is used for being connected with a tail end flange of a robot; and the supporting mechanism is arranged on the clamp mounting plate and located on the lower side of the suction cup array, and the supporting plate mechanism can rotationally stretch out or rotationally retract in the direction of the front side face of the clamp mounting plate and is used for supporting the target box body when the suction cup array sucks the target box body. According to the box stacking device, the situation that when the side face of a target box is sucked through a suction cup array, the target box falls off is avoided, in addition, stacking and unstacking of containing boxes in the top layer area of a box stack can be facilitated, and therefore the stacking upper limit height and the encasement number are increased when stacking is conducted in the space-limited environment such as containers.

The invention relates to the technical field of electrode materials, in particular to a sulfide solid electrolyte and a preparation method thereof, and the preparation method is characterized by comprising the following steps: (1) selecting a lithium source and at least three of a sulfur source, a phosphorus source, elemental sulfur and a halogen source as raw materials, and mixing; the lithium source comprises at least one of lithium carbonate, lithium sulfate, lithium oxide, lithium hydroxide, lithium thiosulfate and lithium sulfite; and (2) putting the mixture prepared in the step (1) into a sintering furnace under the protection of inert gas, and introducing reducing gas for sintering treatment to obtain the sulfide electrolyte. The sulfide solid electrolyte provided by the invention adopts the lithium salt of non-lithium sulfide as the lithium source, the sulfide electrolyte is prepared by a one-step method, an intermediate lithium sulfide preparation link is omitted, and the sulfide solid electrolyte has the characteristics of low cost, simple process, batch industrial production and the like.

The present invention discloses a method for detecting abnormal state of a vehicle battery, including setting a hydrogen adsorbent inside a battery cell of the vehicle battery, the hydrogen adsorbent absorbing hydrogen when the temperature is lower than a preset temperature and releasing hydrogen when the temperature is higher than a preset temperature; and during the operation of the vehicle battery, detecting the concentration of hydrogen in the gas overflowing from the pressure relief valve of the vehicle battery by a hydrogen sensor. The present invention sets a hydrogen adsorbent inside the battery cell, and in the early stage of thermal runaway of the battery, the hydrogen adsorbent adsorbs and accumulates the generated hydrogen; when the temperature is further increased, the hydrogen adsorbent releases the stored hydrogen, so that the hydrogen diffuses to the outside of the battery cell and is detected by the hydrogen sensor. By detecting the accumulated hydrogen generated in the early stage, the early thermal runaway of the battery can be detected more timely. Therefore, the present invention can judge the early stage of thermal runaway more quickly, and there is no need to modify the battery cell or implant a sensor inside.

The invention provides a silodosin intermediate and a preparation method thereof, and relates to the technical field of medicine preparation. Comprising the following steps: S1, 3-(indoline-1-yl) propyl benzoate is used as a raw material and is subjected to a substitution reaction with a bromination reagent, and 3-(5.7-dibromo-indoline-1-yl) propyl benzoate is obtained; s2, carrying out a substitution reaction on the 3-(5.7-dibromo-indoline-1-yl) propyl benzoate to obtain 3-(7-cyano-5-bromo-indoline-1-yl) propyl benzoate, and carrying out a substitution reaction on the 3-(5.7-dibromo-indoline-1-yl) propyl benzoate to obtain 3-(7-cyano-5-bromo-indoline-1-yl) propyl benzoate; s3, carrying out nucleophilic addition on the 3-(7-cyano-5-bromo-indoline-1-yl) propyl benzoate and epoxypropane, and carrying out ring opening on the 3-(7-cyano-5-(2-hydroxy-propyl) indoline-1-yl) propyl benzoate, so as to obtain 3-(7-cyano-5-(2-hydroxy-propyl) indoline-1-yl) propyl benzoate; s4, the 3-(7-cyano-5-(2-hydroxy-propyl) indoline-1-yl) propyl benzoate is subjected to oxidation, and the 3-(7-cyano-5-(2-oxopropyl) indoline-1-yl) propyl benzoate is generated. According to the synthesis method disclosed by the invention, all raw materials are easy to obtain, high-risk and high-pollution reagents are not used, the synthesis method is safe and environment-friendly, and the prepared silodosin intermediate is good in purity and high in yield.

The utility model discloses a kind of clamping spring installation jigs, it is related to connector assembly technical field.The jig includes handheld part, push rod part, first spring and second spring.The shell of handheld part is equipped with through first passage;Push rod part is slidably arranged in passage, and it is made of hand push rod and mounting rod that can slide relatively, and mounting rod end is used to sleeve joint clamping spring to be installed.First spring provides the overall reset force of push rod part, and second spring is sleeved between two rods, stores energy and releases when mounting rod is positioned by clamping spring to support clamping spring.Optimal solution includes: tail cap is equipped with threaded connection at the tail of hand push rod;Two rods are equipped with guide disc part;The head of shell is additionally provided with limiting component with adapter part, for matching photovoltaic connector port.The utility model is simple in structure, low in cost, and realizes accurate installation of clamping spring by double spring cooperation, solve the problem of low efficiency of manual installation under small-batch scene.

This invention discloses a silicon-carbon composite anode material, its preparation method, and its applications. The preparation method includes: preparing a nitrogen-doped porous carbon framework from a carbon source, a nitrogen source, a pore-forming agent, and a soft template agent; surface-modifying the nitrogen-doped porous carbon framework with a silane coupling agent; subjecting the surface-modified nitrogen-doped porous carbon framework to chemical vapor deposition to obtain a silicon-carbon composite intermediate; and carbon-coating the silicon-carbon composite intermediate to form the silicon-carbon composite anode material. This invention improves the interfacial bonding strength between silicon and the carbon framework through chemical anchoring, and provides sufficient buffer space for silicon volume expansion through the synergistic pore-forming effect of the pore-forming agent and the soft template agent, thereby improving cycle stability. All steps are conventional chemical unit operations, and the raw materials used are all industrial-grade chemicals. The equipment requirements are low, and it is easy to scale up production.

This invention discloses a short-process rapid solidification / powder metallurgy technology and its applications. The short-process rapid solidification / powder metallurgy technology of this invention includes the following steps: Step 1: Using metal wire or powder as raw material, a bulk blank with a thickness of 1-10 mm is deposited on a substrate using thermal spraying technology; the metal is selected from magnesium, titanium, copper, iron, nickel, zinc, aluminum, or their alloys; Step 2: The bulk blank is thermomechanically processed to obtain a sheet product; the thermal spraying technology includes flame spraying, supersonic spraying, arc spraying, plasma spraying, or cold spraying; the thermomechanical processing includes hot rolling, hot extrusion, or hot forging. This invention significantly shortens the preparation process, consumes less energy, has low overall production costs, and has wide applicability, and can be applied to the preparation of metal matrix composites, ultrafine-grained metal materials, heterostructure metal materials, layered structure metal composites, etc.

The invention provides a method for improving the toughness of high-Si ferrite / martensitic steel through dispersed forging, and relates to the technical field of ferrite / martensitic steel. The method comprises the steps of first-time upsetting and drawing-out, second-time upsetting and drawing-out, third-time upsetting and drawing-out, fourth-time upsetting and drawing-out, plate forging and heat treatment after forging which are conducted in sequence, and finally the finished high-Si ferrite / martensite steel plate is obtained. The tissue structure of the finished high-Si ferrite / martensite steel plate is bamboo-like delta ferrite and martensite. According to the method, the content of delta ferrite is reduced in a manner of combining circulating forging and heat treatment; and on the basis that the corrosion resistance is kept, the strength and toughness of the high-Si ferrite / martensitic steel in the room temperature environment and the high temperature environment can be cooperatively improved, and industrial large-scale production and popularization are facilitated.