44results about How to "Avoid process problems" patented technology

The invention provides a device and a method for evaporating and solidifying power plant wastewater by using flue gas waste heat, the device comprises a bypass flue led out from a dust remover and a desulfurizing tower in a flue gas treatment main flue, the bypass flue is provided with an evaporating and solidifying unit, the evaporating and solidifying unit comprises an evaporating and solidifying device, an atomizing and spraying device and a dust filtering device, the dust filtering device and the atomizing and spraying device are positioned at the upper part in the evaporation and curing device, and the dust filtering device is positioned above the atomizing and spraying device; the dust filtering device comprises blowing pipes, filter bags and venturi tubes, the blowing pipes are connected with the filter bags through the venturi tubes, each blowing pipe corresponds to a plurality of groups of filter bags and venturi tubes, and the filter bags and the venturi tubes are in one-to-one correspondence. According to the device disclosed by the invention, by arranging the bypass flue, waste heat of flue gas is utilized to evaporate and solidify wastewater, so that wastewater recovery treatment and zero emission can be realized, additional energy consumption is not needed, the treatment efficiency is high, the treatment cost is low, a main flue gas treatment process is not influenced, and clean production is realized; the device is simple in structure, convenient to maintain and low in operation cost.

The utility model provides a metal label manufacturing welding machining mechanism which comprises a base, a movable plate is arranged above the base, a first sliding groove is formed in the top of the base, an end cover is arranged at one end of the first sliding groove in a clamped mode, and a threaded rod is arranged in the end cover in a penetrating mode. And one end of the threaded rod penetrates through the bottom of the movable plate and is clamped to the other end of the first sliding groove, multiple sets of motors are arranged on one side of the base, multiple clamping grooves are formed in one side of the base, the multiple motors are connected with the base through the multiple clamping grooves correspondingly, and a movable structure is arranged at the rear end of the base. When the equipment is used, the metal label can be placed on the base, then the motor is started to drive the threaded rod, so that the position of the movable plate is adjusted, the metal label is fixed, the process of fixing the metal label is more automatic and accurate through the structure, and the production efficiency and the product quality are improved.

The invention relates to the technical field of automobile parts, and particularly discloses an anti-oxidation corrosion-resistant automobile air-inlet grille and an electroplating process thereof.The anti-oxidation corrosion-resistant automobile air-inlet grille is prepared from phenoxy-terminated siloxane modified polycarbonate, ABS resin, a modified LDHs antioxidant, a compatilizer ABS-g-MAH and a lubricant ethylene bis stearamide through melt blending, extrusion granulation and injection molding. And a copper layer, a nickel-phosphorus layer and a cobalt-chromium layer are further electroplated and deposited on the automobile air-inlet grille, and the anti-oxidation and corrosion-resistant automobile air-inlet grille is formed.

The invention discloses a detection circuit of a bearing boat, a fault detection method and semiconductor process equipment, the detection circuit of the bearing boat is used for detecting on-off between bearing boat pages in a semiconductor process chamber, and the semiconductor process chamber can accommodate at least one bearing boat. Two poles of each bearing boat are provided with a group of radio frequency output ports; the detection circuit comprises a signal generator and a signal detector which are respectively connected between each group of radio frequency output ports, and the signal generator, the bearing boat and the signal detector corresponding to each group of radio frequency output ports respectively form an electric loop; the signal generator is used for providing an electric signal; the signal detector is used for detecting the on-off state of an electric loop where the corresponding bearing boat is located, and the on-off state of the electric loop is used for representing the on-off state between boat pages of the corresponding bearing boat. According to the invention, the productivity of the corresponding semiconductor process equipment can be improved.

The invention discloses a quantitative auxiliary bamboo stick packaging device, and relates to the field of auxiliary packaging, the quantitative auxiliary bamboo stick packaging device comprises a box body, the bottom end of the box body is provided with an automatic screening processing mechanism, one side of the box body is provided with a weighing quantitative mechanism, and the bottom end of the automatic screening processing mechanism is provided with a packaging sealing mechanism; the automatic screening treatment mechanism comprises a supporting frame and a power gear shaft, the automatic screening treatment mechanism selects the bamboo sticks according to the length, the bamboo sticks with the length exceeding the qualified length are cut off, and the bamboo sticks with the length smaller than the qualified length are removed; the length of the bamboo sticks meets the standard, each bamboo stick can better adapt to the size of a packaging container in the packaging process, in this way, the stability and the fitting degree of the bamboo sticks in the packaging container can be improved, collision and friction of the bamboo sticks in the transportation and storage process are reduced, and the damage rate and the fracture rate of the bamboo sticks are reduced.

The application relates to an LED light-emitting module, an LED packaging structure and a related manufacturing method, and relates to the technical field of semiconductor light emission. Each light-emitting diode chip is packaged in advance, a plurality of annular grooves are formed in the first packaging layer, each annular groove surrounds a corresponding light-emitting diode chip, a magnetic adsorption structure is formed in each annular groove, the magnetic adsorption structure is embedded into a plurality of second grooves, the peeling of the magnetic adsorption structure can be effectively avoided, the magnetic adsorption structure is magnetized, the above magnetic adsorption structure can realize the detachable connection of the light-emitting diode chip and the circuit substrate, the printing of solder and the reflow soldering process can be avoided, the manufacturing cost is greatly reduced, and since the light-emitting diode chip and the circuit substrate are detachably connected, the removal of a defective light-emitting diode chip is facilitated, and the repair of the light-emitting module can be smoothly realized.

The present invention discloses a method for preparing porous copper foil by electrochemical anodization under a complexing agent electrolyte system. The method comprises: providing an electrolyte, the electrolyte mainly comprising a complexing agent electrolyte and an electrolyte additive, the complexing agent electrolyte comprising sodium potassium tartrate, EDTA-2Na, sodium citrate, etc., and the electrolyte additive comprising ammonium sulfate, sodium chloride, ammonia, copper sulfate, sodium hydroxide, sodium sulfate, etc.; using a copper-based metal material as an anode, so that it and a cathode and an electrolyte jointly construct an electrochemical reaction system, and electrochemical anodization is performed to obtain a porous copper foil. The method of the present invention is to anodize the copper foil, and to form a copper chelate with the aid of a complexing agent electrolyte and adsorb it on the anode surface. The method has a short operation process and a low preparation cost, and can prepare a porous copper foil with high specific surface area, high electron transfer efficiency and high strength, and has great application potential in the fields of secondary battery current collectors and electrocatalysis.

The utility model relates to a sectional material sealing structure which comprises a first elastic gasket and sectional materials, a groove position used for installing the first elastic gasket is formed in the end face of each sectional material, the depth of each groove position is smaller than the thickness of each first elastic gasket, and when the two sectional materials are fixed, the end face of one sectional material is fixed to the side face of the other sectional material; the first elastic gasket abuts against the side face of the other sectional material, and the first elastic gasket is extruded. The depth of the groove position is smaller than the thickness of the first elastic gasket, so that the first elastic gasket is extruded between the section bars and is tightly attached to the section bars, and when the two section bars need to be installed together, the end face of one section bar is fixed to the side face of the other section bar, the end face of the first elastic gasket abuts against the side face of the other section bar, and therefore the section bars can be installed together. By means of the mode, the welding or gluing process can be avoided, a large amount of time and technical requirements needed by welding are omitted, time needed by manual gluing is saved, and cost is saved.

The utility model relates to the technical field of three-way valves, and discloses a spherical ceramic three-way valve which comprises a valve body and an arranged ball valve. The lower portion of an inner cavity of the fixing ring plate is rotationally connected with a limiting concave plate, a limiting groove is formed in the top of the limiting concave plate, a rotating shaft is installed at the bottom of the limiting concave plate and connected with the ball valve, and a driving motor is installed over the fixing ring plate; the top of the second fixing base is connected with an annular rotating handle, the top of the second fixing base is connected with a second limiting protruding plate, and a second limiting protruding block is installed at the bottom of the second limiting protruding plate. According to the spherical ceramic three-way valve, a driving motor is separated from a fixing ring plate, a second fixing base is placed in an inner cavity of the fixing ring plate and then attached to a limiting concave plate, a second limiting convex plate is inserted into a limiting groove, an annular rotating handle drives the second limiting convex plate and a second limiting convex block to rotate in the fixing ring plate, and the second limiting convex block drives the limiting concave plate to rotate; and the rotating shaft drives the ball valve to rotate.

The invention relates to a composite foil manufacturing system and application thereof.The composite foil manufacturing system comprises an unwinding system which is of a winding and unwinding integrated structure and is used for unwinding a multi-layer composite material which comprises a functional base material, and at least one side surface of the multi-layer composite material comprises an adhesive layer and a release film; the foil generating system comprises a cathode roller and is at least used for generating a foil layer; the compounding system is used for compounding the functional base material, the adhesive layer and the foil layer to prepare a composite foil intermediate; the composite foil passing rollers are at least used for conveying; the passivation system comprises a first passivation device containing a first passivation solution, and is used for performing first passivation treatment on the composite foil intermediate, and during the first passivation treatment, the single-side foil layer is used as a liquid layer to be in contact with the first passivation solution, or is further used as an isolating layer to isolate the first passivation solution from the adhesive layer and the release film on the back side; and the winding system is at least used for winding the composite foil. The system is low in equipment cost, small in occupied area, capable of achieving integration of foil generation and compounding and improving the oxidation resistance of the composite foil, and wide in application prospect.

The invention discloses integrated wearable monitoring equipment and a manufacturing method thereof, and belongs to the technical field of wearable health monitoring. The device comprises a flexible substrate, a microfluidic sweat collection layer, an optical sensing unit, a temperature-sensitive color-changing layer and a flexible transparent packaging shell. The micro-fluidic layer is used for collecting and guiding sweat to a detection area in which a color developing reagent is preset; the temperature-sensitive color-changing layer is attached to the surface of the skin; and the optical sensing unit respectively realizes simultaneous monitoring of sweat components and body temperature by sensing color changes of the detection area and the temperature-sensitive layer. Ambient light is used for working, an external power supply is not needed, and true passive sensing is achieved; the two-parameter monitoring function is integrated into a single system through the optical principle, the structure is simplified, cost is low, wearing is comfortable, and the system is suitable for long-term and continuous non-invasive monitoring of the human health state.

The invention discloses an integral manufacturing method for characters and patterns on the surface of a keyboard in the technical field of keyboard production and manufacturing. The integral manufacturing method comprises the following steps: step 1, carrying out surface treatment on the surfaces of keys needing to be printed with patterns; 2, printing characters on the surfaces of the processed keyboard keys by using printing equipment; 3, font curing is conducted on the keyboard after the characters are printed, and UV curing is adopted; 4, after the keyboard fonts are cured, printing protection gloss oil is used for brushing; 5, carrying out secondary curing on the keyboard printed with the protective gloss oil, wherein UV curing is adopted; and step 6, detecting the light-cured keyboard, and screening defective products, the overall manufacturing method of the keyboard surface characters and patterns is reasonable in structural design, the cost of manually installing keycaps is reduced, the waste of dead materials and production processes is avoided, the production cost is reduced, and the environmental protection concept is met.

The utility model discloses a directly packaged building integrated photovoltaics (BIPV) light component and packaging equipment, and particularly relates to the technical field of photovoltaic product processing, the directly packaged BIPV light component comprises a workbench, the top of the workbench is provided with a packaging mold, the top of the packaging mold is provided with a BIPV light component, the BIPV light component comprises a transparent front film layer, the bottom end of the transparent front film layer is provided with a glass fiber reinforced layer, and the bottom end of the glass fiber reinforced layer is provided with a transparent back film layer. And a battery array layer is arranged at the bottom end of the glass fiber reinforced layer. According to the BIPV light assembly, the PET foaming layer is arranged at the bottom end of the metal micropore oxidation layer, the low-gloss aluminum film layer is arranged at the bottom end of the PET foaming layer, the glass fiber reinforcement layer is arranged at the bottom end of the transparent front film layer, and the battery array layer is arranged at the bottom end of the glass fiber reinforcement layer, so that the BIPV light assembly can be integrally laminated and packaged. The integrated lamination packaging of the BIPV light assembly is realized, and subsequent bonding and tedious installation processes are avoided.

The present invention relates to the technical field of functional finishing agents for textiles, and discloses an acrylic ester fluorine-free waterproofing agent, comprising the following components in mass percentage: 25-35% of fluorine-free copolymer, 1-5% of surfactant, 0.2-0.5% of acid regulator, 5-10% of organic solvent, and the rest being water. Aiming at the defects of insufficient water resistance and washability of existing acrylic ester fluorine-free waterproofing agents on textiles, as well as poor hand feel and serious hand scratches, a fluorine-free waterproofing agent is prepared, which has more excellent water resistance, and does not need to be combined with a cross-linking agent or copolymerized vinyl chloride / vinylidene chloride to give textiles a durable waterproof effect. At the same time, a better hand feel can be obtained without compounding silicone oil or silicone resin, and the hand scratch phenomenon is significantly improved, avoiding the negative impact of the compounding of fluorine-free waterproofing agents, cross-linking agents and other additives on emulsion stability and other properties, and also avoiding the potential threats and process uncertainties brought by the use of vinyl chloride, making the polymerization process simpler and safer.

The application relates to the technical field of plastic processing, and discloses a plastic melting uniformity analysis method and system. The method comprises the following steps: collecting fluctuation of a supply amount and material distribution data, obtaining a temperature deviation fluctuation interval and a material abnormal distribution graph; combining the temperature deviation and a dynamic disturbance frequency to judge a fluctuation type and generate temperature distribution abnormality prediction data; extracting key features from the temperature distribution abnormality prediction data to determine a plastic flow characteristic change trend; integrating dynamic characteristic data to evaluate the influence degree of a melting process on uniformity; quantifying a shear rate mutation response based on the influence degree to adjust a melting time fluctuation interval parameter; generating a uniformity distribution graph through multi-scenario simulation to determine a product quality quantization index; generating an adjustment strategy according to the index and iteratively optimizing the adjustment strategy to finally determine melting process control parameters. The application solves the problems of poor melting uniformity and control lag caused by disturbance coupling, and improves the stability of a plastic melting process and the consistency of product quality.

The application discloses a method for growing large-area high-performance hole-conducting tungsten diselenide monocrystals on a silicon-based insulating layer. The method is to use a molten salt to react with a tungsten source to generate an intermediate product with a lower melting point and a higher vapor pressure, so that it is easier to grow tungsten diselenide monocrystals on the silicon oxide or high-dielectric-constant insulating layer on the silicon substrate based on the principle of chemical vapor deposition. At the same time, the large-area growth of tungsten diselenide is realized by changing the placing mode of the substrate. The method can effectively control the growth of large-area multilayer tungsten diselenide monocrystals, obtain a silicon-compatible high-mobility hole-conducting two-dimensional material, and is simple to operate, does not need to be transferred, and has higher material quality.

The waste discharging device and the stamping die device provided in the embodiments of the present disclosure include a main body provided with a waste outlet and a waste storage part. The waste storage part is communicated with one end of a waste output channel extending upward and downward through the waste outlet, and the other end of the waste output channel forms a waste inlet. A blocking piece is movably arranged above the waste storage part to form a storage space for storing waste between the waste storage part and the blocking piece. At least one sensor is arranged in sensing cooperation with the blocking piece to generate a trigger signal when the blocking piece is located at a preset position. A discharging mechanism is arranged corresponding to the waste storage part and is in communication connection with the sensor, and is configured to perform a cleaning action on the storage space in response to the trigger signal to remove the waste in the storage space. The discharge and cleaning of the waste can be completed without manual intervention, greatly reducing the downtime of the equipment caused by waste blockage or residue.

The invention discloses a polypeptide-containing multifunctional organic-inorganic composite material as well as a preparation method and application thereof. The composite material is prepared by compounding organic matters such as waste containing lignin and water-insoluble polysaccharide, waste containing protein and the like and inorganic matters containing nitrogen, phosphorus and potassium through certain steps. The material has multiple functions of promoting plant growth, controlling nutrient release, absorbing and retaining water, reducing damage of saline-alkali soil to plants, passivating heavy metal ions and the like. The method has the advantages of easily available and cheap raw materials, no pollution in the production process, diversified product functions, convenience in use, high production efficiency, low cost, easiness in large-scale production and application and the like. The method is a new method for high-valued and large-scale utilization of wastes such as straws, can solve the problem of straw utilization, promotes agricultural production, protects the ecological environment, and has a wide application prospect.

The application relates to the technical field of industrial manufacturing, and discloses a method and system for improving the completion parameters of understanding user input, which comprises the following steps: inputting an industrial standardized file, generating a semantic label, reasoning through the industrial standardized file and the semantic label, obtaining an optimized industrial standardized file, and obtaining an industrial rule set and a text parameter set input by a user. The application realizes accurate semantic label generation based on a WordNet synonym set, solves the polysemy ambiguity problem, calculates the similarity between a candidate parameter and a user conversation through an improved Levenshtein distance algorithm and a compensation mechanism, accurately captures the potential demand of the user, improves the consistency with the actual input intention of the user, multiplies the initial weight value, the click rate and the time decay factor to sort the candidate parameters, balances the instant production demand and the historical experience in the industrial scene, and significantly improves the accuracy, adaptability, efficiency and interpretability in four dimensions.

The present application relates to a system and method for drilling and grouting simultaneously while drilling in complex strata in a coal mine, belonging to the technical field of drilling in a coal mine, in which drilling fluid is used for drilling, and when serious hole collapse or fissure loss of drilling fluid is encountered, the drilling fluid is converted into grouting fluid on site, grouting is carried out, and a hole mouth pressure bearing device is matched to enable pressure operation, realizing drilling and grouting simultaneously, and the pressure operation can balance part of the stratum pressure / stratum collapse pressure, reducing the degree of hole collapse during drilling, thereby improving the hole completion rate and hole completion depth. Compared with the prior art, the present application uses pressure operation in the hole during drilling, realizes high-pressure grouting, improves the grouting reinforcement effect, can realize drilling and point grouting, can also realize multiple grouting, solves the hole collapse problem during directional drilling in complex strata in a coal mine, and no longer needs multiple reaming, multiple drilling and reaming, avoiding the defects and deficiencies of the existing grouting process.

This invention belongs to the field of electrode material technology, specifically relating to a multi-level nanostructure, dual-phase Co-Li4Ti5O 12 / TiO2 / C composite material, its preparation method, and its application. The composite material also contains the spinel phase Li4Ti5O. 12 The composite material is composed of anatase TiO2, doped with Co, and coated with a carbon layer. The preparation method of the composite material is as follows: Titanium, lithium, and cobalt sources are dissolved in anhydrous ethanol to obtain solution A; a carbon source is dissolved in water to obtain solution B; solution B is added dropwise to solution A; after the hydrothermal reaction is completed, the mixture is treated and calcined to obtain a multi-level nanostructured, two-phase interface composite material. The multi-level nanostructured, two-phase interface Co-Li4Ti5O2 composite material provided by this invention... 12 The preparation method of / TiO2 / C composite material is simple and low-cost. Applying the composite material to lithium-ion batteries can improve the chemical performance of the batteries and extend their lifespan.

The application relates to the technical field of semiconductor manufacturing, in particular to a semiconductor device and a preparation method thereof, which comprises a semiconductor substrate, a first transistor and a second transistor, the first transistor and the second transistor are sequentially arranged above the semiconductor substrate along the thickness direction of the semiconductor substrate from bottom to top, the first transistor comprises a first gate stack structure and a first source / drain region located on both sides of the first gate stack structure, the second transistor comprises a second gate stack structure and a second source / drain region located on both sides of the second gate stack structure, a gate isolation structure is arranged between the first gate stack structure and the second gate stack structure, and a source / drain isolation region is arranged between the first source / drain region and the second source / drain region; wherein, in the width direction of the channel, the width of the gate isolation structure and the width of the source / drain isolation region are the same; and the first source / drain region and the second source / drain region are respectively located below and above the source / drain isolation region. The application significantly reduces the process integration difficulty of the device.

The utility model relates to the technical field of corrugated board main body processing, in particular to a corrugated board concave-convex and line-pressing integrated structure and a corrugated board manufactured by the corrugated board concave-convex and line-pressing integrated structure, which comprise a workbench, a supporting plate is fixedly arranged at the top end of the workbench, a processing assembly is arranged on the supporting plate, and the processing assembly comprises a die cutting board base plate arranged at the bottom end of the supporting plate. A die-cutting knife is fixedly installed at the bottom end of the die-cutting plate base plate, and a plurality of concave-convex plates are evenly arranged on the inner side of the die-cutting knife. According to the corrugated board processing device, concave-convex indentation strip processing can be carried out while a concave-convex process is carried out on a product, a secondary line pressing process can be avoided, the production period is shortened, the production efficiency is improved, the labor intensity is relieved, the roller on the inner side of the movable table can clamp a corrugated board body placed on the working table, and the working efficiency is improved. According to the corrugated board machining device, deviation in the corrugated board body machining process can be avoided, the machining efficiency can be guaranteed, the distance between the two movable tables can be conveniently adjusted, corrugated board bodies of different sizes can be conveniently clamped, and the applicability can be improved.

The utility model belongs to the technical field of oxidation diffusion furnace, concretely relates to an oxidation diffusion furnace exhaust device, including oxidation diffusion furnace main part, the outlet port department of the top left side edge of oxidation diffusion furnace main part is fixed with the exhaust pipe, the outside fixed of exhaust pipe has the exhaust tank, the both ends outlet port department of exhaust tank all are fixed with the outlet pipe, the bottom of exhaust tank is fixed in the top of oxidation diffusion furnace main part through two symmetrical support rod fixed connection, the utility model discloses an oxidation diffusion furnace exhaust device, when needing to replace the filter screen of left side, can through starting servo motor drive second gear to carry out clockwise rotation, and transmission in first gear drives inverted L type rotating pipe to rotate one hundred and eighty degrees, and then the one end of inverted L type rotating pipe is aligned with the outlet round mouth of right side exhaust cover, thereby making the waste gas in the stove can be discharged from the right end outlet round mouth, right side exhaust cover and right side outlet pipe.

The present invention discloses a control method, a control device and a control system. The control method comprises: obtaining first displacement information of a measurement object through a capacitive sensor; obtaining at least one kind of environmental information through at least one environmental sensor in the same environment as the capacitive sensor; obtaining first compensation information and compensating the first displacement information according to an environment and displacement model and at least one kind of environmental information. In the present invention, an environment and displacement model is pre-stored in the control device, which can achieve the effect of compensating the measurement result of the capacitive sensor according to the environmental information, reduce the interference of the environmental information, and improve the displacement measurement accuracy; there is no need to improve the structural design of the capacitive sensor, nor to adopt complex signal processing technology, avoiding the high cost and complex manufacturing process required for hardware improvement, and is not limited to application scenarios. Even in some special cases such as drastic environmental changes or long duration, high displacement measurement accuracy can be guaranteed.

The invention discloses a preparation method for synchronously generating a perovskite quantum dot and silicon dioxide aerogel composite material through color conversion, and relates to the field of quantum dot preparation, and the preparation method comprises the following steps: firstly, dissolving cesium bromide and lead bromide in anhydrous N, N-dimethylformamide, fully stirring, adding oleic acid and aminopropyltriethoxysilane, and stirring to obtain a mixed solution; performing ultrasonic oscillation to obtain a uniform precursor solution; then, mixing TEOS (tetraethyl orthosilicate) and the precursor solution, and stirring while heating to promote sol-gel conversion; adding absolute ethyl alcohol, dropwise adding ammonia water, continuously and fully stirring, and adjusting the pH value to form a uniform homogeneous sol solution; then vacuumizing and circulating nitrogen, adding a cesium oleate solution and continuously stirring to control the perovskite quantum dots to be uniformly generated in a silicon dioxide network, completing sol-gel transformation and forming a stable SiO2 (at) CsPbBr3 composite material; and finally, performing supercritical CO2 drying to finish the formation of silicon dioxide aerogel and the encapsulation of the quantum dots.

The invention discloses a treatment method of chemical washing waste liquid of a water treatment filter membrane, the chemical washing waste liquid comprises acid washing waste liquid and alkali washing waste liquid, and the treatment method comprises the following steps: S1, mixing the acid washing waste liquid and the alkali washing waste liquid until the pH value of the obtained mixed liquid is 2-5, adding a catalyst and an oxidizing agent, and carrying out a catalytic oxidation reaction; s2, after the catalytic oxidation reaction, alkali washing waste liquid is injected into the mixed liquid for pH adjustment, so that the pH value of the mixed liquid is neutral or slightly alkaline, and a flocculation reaction is carried out; and S3, after the flocculation reaction, adding a hardness removal agent for hardness removal, and performing organic matter adsorption by an adsorbent. According to the method disclosed by the invention, the pickling waste liquid and the alkali washing waste liquid with high organic pollution are mixed in different proportions in different reaction stages to create catalytic reaction conditions required by Fenton (class), so that the process defect that neutralization is performed firstly and then acid and alkali are added for regulation is avoided, and the conditions required by Fenton (class) oxidation are met; and the problem of high acid and alkali consumption in the (similar) Fenton oxidation process is avoided.

This invention discloses a 3D printing method and apparatus for the integrated molding of heterogeneous multi-component components, specifically relating to the fields of advanced manufacturing and intelligent microsystems technology. This invention overcomes the limitations of traditional multi-material 3D printing, which can only integrate electronic components and cannot embed drivers. It employs a dual-mode embedding method combining vacuum adsorption and pneumatic gripping, achieving integrated manufacturing of micro-drivers, electronic components, high-precision conductive lines, and structural substrates. By preparing wires through mask scraping, it solves the problems of low precision and difficulty in adapting to micro-circuits in direct writing, improving interconnect reliability and miniaturization level. The direct embedding of mature drivers avoids the polarization process and performance degradation issues required for direct printing of piezoelectric materials, ensuring stable and reliable driving performance. Through in-situ wire fabrication and a closed-loop printing process, it eliminates the risk of post-assembly errors and interconnect failures.

The invention discloses a preparation method of a lithium niobate / lithium tantalate high-performance surface acoustic wave device, and belongs to the technical field of acoustic resonators / filters. The preparation method of the high-performance surface acoustic wave device comprises the following steps: depositing the energy limiting layer on the surface of one side of the piezoelectric layer; indirectly bonding the supporting substrate layer on one surface, far away from the piezoelectric layer, of the energy limiting layer to form a bonding device; thinning the piezoelectric layer on the bonding device to form a thin film piezoelectric layer; and depositing an electrode layer on the surface of the film piezoelectric layer on the bonding device to obtain the lithium niobate high-performance surface acoustic wave device. The piezoelectric layer is selected from a lithium niobate single crystal wafer and a lithium tantalate single crystal wafer. The preparation method is a general scheme of reverse manufacturing, ion implantation and direct bonding processes used in current mainstream processes are avoided, and precise thinning and indirect bonding processes are adopted. And under the condition of reducing the preparation difficulty and cost of the device, the device structure and product performance which are the same as those of a mainstream process can be achieved.

This invention relates to the field of polymer materials, and discloses a grafted modified polyethylene, its preparation method, and its applications. The grafted polyethylene comprises polyethylene molecular chains and vinyl side chains grafted onto the polyethylene molecular chains; wherein the vinyl content in the polyethylene is 5-10 / 1000C, and the crosslinking density of the polyethylene is less than or equal to 2.3 × 10⁻⁶. ‑4 mol / mL. Polyethylene contains a high content of crosslinkable vinyl double bonds while having a low degree of crosslinking. This allows for a significant improvement in crosslinking performance while greatly reducing the amount of crosslinking initiator required, thereby ensuring that the resulting cable possesses excellent heat resistance, electrical properties, and mechanical properties.