23results about How to "Strong blocking ability" patented technology

The embodiment of the invention relates to the photovoltaic field, and provides a photovoltaic cell and a manufacturing method thereof, a laminated cell and a photovoltaic module, the photovoltaic cell comprises a substrate with a front surface and a back surface opposite to each other along a first direction, and the back surface is provided with first metallized regions and first non-metallized regions which are alternately arranged; the tunneling layer and the doped polycrystalline silicon layer are located on the back face and are sequentially stacked in the first direction; the amorphous silicon layers are arranged at intervals and embedded in the part, located in the first metallization region, of the doped polycrystalline silicon layer, and the first thickness of the amorphous silicon layers is smaller than the second thickness of the part, located in the first non-metallization region, of the doped polycrystalline silicon layer in the first direction; the back electrodes are in one-to-one correspondence with the amorphous silicon layers and are at least in contact connection with the amorphous silicon layers, and the back electrodes are embedded into the amorphous silicon layers with at least partial thickness in the first direction. The embodiment of the invention is at least beneficial to improving the light absorptivity of the substrate and avoiding further permeation of the electrode so as to comprehensively improve the photoelectric conversion efficiency of the photovoltaic cell.

The invention provides a preparation method and application of a filtrate reducer, and the preparation method comprises the following steps: under an acidic condition, dropwise adding a silane coupling agent containing double bonds into a graphite dispersion liquid, carrying out a grafting reaction to obtain silane coupling agent modified graphite, adding a cross-linking agent into the silane coupling agent modified graphite, adjusting the pH value to neutral, and carrying out vacuum drying to obtain the filtrate reducer. The preparation method comprises the following steps: preparing a first intermediate solution, mixing acrylamide, a sulfonic monomer, a cationic monomer and a monomer containing a cyclic group, adjusting the pH value to be neutral to form a second intermediate solution, finally adding an initiator into the first intermediate solution, dropwise adding the second intermediate solution, and carrying out a polymerization reaction to obtain the filtrate reducer. The filtrate reducer prepared by the method has better high-temperature-resistant filtrate loss reduction property, pressure bearing capacity and plugging capacity.

The invention discloses a crystal compound, a preparation method thereof and application of the crystal compound in X-ray detection, imaging and anti-counterfeiting encryption, and belongs to the technical field of crystals. The molecular formula of the crystal compound is [Cu (totp) (CH3CN) 3] [Cu2I3 (totp) (PN)]. (CH3CN), wherein totp is tris (o-tolyl) phosphine; and PN is diphenyl-2-pyridine phosphine. The crystal compound disclosed by the invention is simple in preparation method, and has the characteristics of large mass attenuation coefficient of X-ray energy, high light yield and low detection limit when being used as a material of an X-ray detector. The compound also has the characteristic of structural transformation in solvents such as methanol, ethanol, acetone, dichloromethane, tetrahydrofuran and the like, and meanwhile, the conversion of luminescence color under the excitation of 365nm ultraviolet light and X rays is accompanied. The material can be applied to the aspects of scintillator materials, room-temperature X-ray radiation indirect detection materials, radiation detection dosimeters, X-ray scintillator medical imaging, anti-counterfeiting encryption and the like.

The application discloses a gelatinous material prepared by using industrial waste residues and used for oilfield water layer plugging, a preparation method and a water plugging cement slurry, and relates to the technical field of oilfield water plugging materials. The gelatinous material is composed of 25-40 parts of superfine siliceous material, 50-65 parts of superfine calcareous material, 4-8 parts of superfine silico-aluminous material, 1-2 parts of nano calcium silicate, 2-4 parts of superfine expanding agent and 1-3 parts of starch density stabilizer in terms of weight percentage. The application solves the technical problems of low plugging strength, poor plugging effect, poor durability and high cost of the existing water plugging materials, and meets the oilfield water layer plugging requirements of different working conditions.

The present invention relates to the technical field of mineral sorting, and in particular to a mineral sorting method and a sorting system thereof, comprising a sorting box, a controller is provided on one side of the sorting box, shaft blocks are provided on both sides of the top of the sorting box, and the facing sides of the two shaft blocks are connected to the same connecting shaft through bearings; the device not only realizes the collision crushing sorting of minerals, but also realizes secondary screening with the help of screen plates and bent screens, with higher sorting efficiency and better sorting accuracy; and in the sorting process, the collision crushing effect and the subsequent up and down vibration sorting amplitude can be adjusted according to the volume of the mineral, with stronger adaptability, higher stability and higher sorting accuracy. When all the minerals are small particles, the swaying effect of the bent screen is used to improve the paving effect of qualified minerals, with higher recovery and better uniformity; at the same time, the gap between the feed ring frame and the hollow surrounding dust suction plate can be adjusted by itself, so as to achieve better impact crushing effect.

The invention relates to a display panel and a display device.The display panel comprises an array substrate and an opposite substrate which are oppositely arranged, and a spacer column arranged between the array substrate and the opposite substrate, the array substrate is provided with a non-pixel area, and the array substrate comprises a first substrate, a thin film transistor and a retaining wall; the thin film transistor is arranged on the side, facing the opposite substrate, of the first substrate and located in the non-pixel area; the retaining wall is formed on the side, facing the opposite substrate, of the array substrate, and the retaining wall is located on the horizontal moving path, relative to the array substrate, of the shock insulator column; wherein the retaining wall comprises a stacking part and a heightening part which are stacked in the thickness direction of the array substrate, the stacking part is of a stacked structure and is arranged on the same layer as the thin film transistor, and the heightening part is located on the side, facing the opposite substrate, of the stacking part; the orthographic projection of the spacer column on the first substrate is located in a non-pixel area, and the orthographic projection of the spacer column and the orthographic projection of the thin film transistor on the first substrate are arranged in a staggered mode.

The utility model relates to the technical field of unmanned driving, automatic driving or unmanned vehicles, and particularly discloses a cleaning nozzle and an unmanned vehicle, the cleaning nozzle comprises a nozzle body and an air inlet pipe; the nozzle body is provided with a through mounting channel, and the laser radar can penetrate through the mounting channel; an inner cavity is formed in the nozzle body, an arc-shaped air outlet is formed in the side wall of the mounting channel, and the arc-shaped air outlet communicates with the inner cavity; the air inlet pipe is connected to the nozzle body and communicated with the inner cavity, and airflow can enter the inner cavity through the air inlet pipe and is blown out through the arc-shaped air outlet. Air flow blown out of the arc-shaped air outlet can blow off water drops on the surface of the laser radar so as to prevent the water drops attached to the surface of the laser radar from affecting the sensing function of the laser radar, meanwhile, a shielding air curtain formed by the air flow can shield the surface of the laser radar, the shielding capacity is high, and the laser radar can be protected from being damaged. Raindrops can be effectively prevented from dropping on a detection area of the laser radar.

The invention discloses a method for testing the electrochemical corrosion performance of a coarse and fine WC-enhanced 316L deposition sample, and relates to the technical field of laser melting deposition, and the method comprises the following steps: S1, uniformly mixing 316L powder and WC powder to obtain a coarse and fine WC / 316L composite material; s2, using laser melting deposition equipment to prepare different types of WC / 316L composite materials with different thicknesses into deposition samples with the same size; s3, the deposition samples are subjected to cutting sample preparation through a wire cut electric discharge machine; s4, testing the electrochemical corrosion performance of the deposition samples by using an electrochemical workstation; and S5, under an external voltage condition, measuring a dynamic potential polarization curve and an EIS curve of the deposition samples in a NaCl solution environment. The test conclusion obtained by the test method provided by the invention is as follows: the corrosion trend of fine WC / 316L is minimum, the corrosion rate is minimum, the inhibition effect on current is strongest, and the fine WC / 316L shows the best corrosion resistance.

The invention relates to the field of buildings, in particular to a novel fabricated building roof structure which comprises a supporting prefabricated plate and is characterized in that the supporting prefabricated plate comprises a main body supporting layer, the upper end of the main body supporting layer is coated with a first waterproof layer, and the lower end of the main body supporting layer is fixedly connected with a heat preservation layer through bolts; the lower end of the heat preservation layer is coated with a second waterproof layer, a ventilation device is arranged in the heat preservation layer and comprises an air inlet pipe, an air outlet pipe and a water vapor drainage pipe, and the air inlet pipe and the air outlet pipe are inserted into the heat preservation layer from one end of the heat preservation layer. The ends, exposed out of the heat preservation layer, of all the air inlet pipes are fixedly connected with an air inlet main pipe and communicated with the air inlet main pipe, and the ends, exposed out of the heat preservation layer, of all the air outlet pipes are fixedly connected with an air outlet main pipe and communicated with the air outlet main pipe. And therefore, water invaded into the device can be effectively discharged.

The invention provides a backboard assembly, which comprises a backboard with a first ventilation opening, the backboard is a printed circuit board with a first side and a second side which are opposite to each other, and the first side is provided with a hard disk interface; and the sound blocking plates are provided with second ventilation openings, are made of hard materials capable of preventing sound waves from passing through, and are arranged on the second side of the back plate at intervals. The invention further provides an operation device.

The invention discloses a solar cell preparation method for regulating and controlling the quality of an evaporated copper phthalocyanine film based on a substrate, and the method comprises the steps: preparing an electron transmission layer on a conductive substrate, preparing a perovskite light absorption layer, covering the surface of perovskite with an ultrathin Spiro-OMeTAD molecular layer through a vacuum thermal evaporation method, and carrying out the evaporation of a copper phthalocyanine hole transmission layer. And finally evaporating a metal counter electrode. Wherein the Spiro-OMeTAD molecular layer can effectively repair physical defects on the surface of the perovskite polycrystalline thin film, copper phthalocyanine molecular deposition kinetics are further regulated and controlled, and closer molecular accumulation and better thin film coverage are obtained. The Spiro-OMeTAD can also optimize an interface energy level structure, and reverse injection of interface electrons is effectively blocked. The transmission efficiency of interface carriers is improved through improvement of the film quality and the interface energy level, and the CuPc-based perovskite solar cell shows 19.7% of photoelectric conversion efficiency. The introduction of the vacuum thermal evaporation technology further reduces the material cost, is more beneficial to the realization of large-area film formation, and lays a foundation for the marketization of the perovskite solar cell.

The present invention discloses a lightweight energy-absorbing commercial vehicle rear lower protection device, comprising a crossbeam and two mounting brackets symmetrically arranged on the crossbeam; the crossbeam and the mounting brackets are both thin-walled tubular structures; the mounting brackets are configured as K-type mounting brackets and are connected to the longitudinal beam of the vehicle frame. The present invention also discloses a method for preparing a lightweight energy-absorbing commercial vehicle rear lower protection device. The present invention realizes the two functions of blocking and buffering energy absorption of the commercial vehicle rear lower protection device.

The invention discloses an amine organic compound and an organic light-emitting device comprising the same, and belongs to the technical field of organic light-emitting materials, the structure of the amine organic compound is shown in the general formula (1), the amine organic compound has excellent hole mobility and exciton blocking capacity under high current density, and the organic light-emitting device can be applied to the field of organic light-emitting devices. When the amine organic compound is used for forming a light-emitting auxiliary layer material of the organic electroluminescent device, the efficiency of the device is improved, and the service life of the device is prolonged.

The present invention relates to a perovskite solar cell regulated by crystallization and a preparation method thereof, the method comprising: drying a clean conductive base layer with nitrogen and performing ultraviolet-ozone treatment; preparing an electron conduction layer on the conductive base layer; preparing a prolineamide-doped perovskite light-absorbing layer on the electron conduction layer; preparing a proline modified layer on the perovskite light-absorbing layer; preparing a hole conduction layer on the proline modified layer; and sputtering a metal electrode on the hole conduction layer using a magnetron sputtering instrument or an evaporation evaporation method to prepare a metal electrode layer. It can effectively reduce the contact between the electron conduction layer and the hole conduction layer, reduce leakage current, improve photoelectric conversion efficiency, and is conducive to blocking the infiltration of oxygen and improving the stability of the perovskite material.

The invention belongs to the technical field of CO2 oil displacement, and particularly relates to a CO2 reinforced micro-foam oil displacement system and a preparation method, device and application thereof. The CO2 reinforced micro-foam oil displacement system is mainly generated by CO2 and reinforced foam base fluid in a micro-foam generator according to a certain proportion; wherein the reinforced foam base solution is composed of a temperature-resistant and salt-resistant surfactant, an inorganic cross-linking agent, an organic cross-linking agent and a polymer mother solution; wherein the polymer mother liquor is prepared by diluting polyacrylamide and simulated formation water into different concentrations. The average diameter of micro-foam in the CO2 reinforced micro-foam oil displacement system is 10-50 microns, the micro-foam is continuously generated and is good in uniformity, a foam liquid film is thick, a single bubble is spherical, the variation factor is 10%-30%, and a curve formed by connecting three surfaces does not exist.

The application discloses an Hf-Ta-Si / (Hf,Zr)B2 layered composite ultrahigh-temperature protective coating which is composed of a TaSi2 bottom layer, a ceramic layer surface layer with (Hf,Zr)B2 ultrahigh-temperature ceramic as a main phase and a Ta5Si3 interface reaction layer located at the interface between the substrate and the TaSi2 bottom layer, and the interface between each layer is an in-situ reaction autogenous interface; the coating is obtained by prepositioning the slurry of raw material powder on the surface of a tantalum alloy, drying, and then vacuum reaction sintering in one step; the coating has excellent ultrahigh-temperature oxidation resistance, heat scouring resistance and thermal shock resistance, and can effectively protect the tantalum alloy material under the conditions of oxygen, heat scouring and strong thermal shock at 1000 DEG C to 1800 DEG C; the method can reduce the adverse effects of the melting and sintering process on the microstructure and mechanical properties of the tantalum alloy, avoid the problem of preparing the ultrahigh-temperature ceramic coating on the surface of a tantalum alloy with a complex shape, and has higher coating deposition efficiency and lower cost.

This invention discloses a high-strength, high-conductivity copper-silver alloy for communication connectors and its preparation method, belonging to the technical field of copper alloy materials. The process includes: S1 melting and casting, the alloy containing Ag and one or more of the amplitude modulation decomposition inducing elements Ni, Co, Al, Ti, and Fe; S2 homogenization treatment; S3 cooling at 10-50℃ / h to 350-550℃ and holding for 2-24h to induce amplitude modulation decomposition and form a nanoscale periodic amplitude modulation structure; S4 cold deformation processing; S5 multi-stage gradient aging: holding at 200-350℃ for 1-5h, heating at 5-20℃ / h to 400-500℃ and holding for 2-8h, cooling at ≤10℃ / h to 300-350℃ and holding for 4-12h to form a periodically arrayed coherent nano-precipitated phase; S6 preparing an inner self-lubricating plating layer and an outer protective coating. This invention guides the orderly growth of precipitates using an amplitude-modulated template, resulting in an alloy with tensile strength ≥470MPa, conductivity ≥89%IACS, elongation ≥6%, and excellent high-temperature stability, making it suitable for connectors used in extreme environments such as 5G communication and deep space exploration.

The invention discloses a semiconductor structure and a corresponding chip and product. The structure comprises a silicon-based integrated circuit and a bump structure arranged on the silicon-based integrated circuit. The bump structure sequentially comprises a UBM layer, a copper conductor layer, a nickel conductor layer and a gold conductor layer. The exposed side walls of the UBM layer, the copper conductor layer and the nickel conductor layer are coated with a metal protection layer composed of palladium, palladium alloy, platinum or platinum alloy, and the protection layer does not cover the gold conductor layer. According to the preparation method, the step-shaped side wall is formed through etching steps in a specific sequence, selective self-growth of the protective layer on the titanium / copper / nickel side wall is achieved through chemical plating based on metal equilibrium potential difference, and the protective layer is not deposited on the gold surface. The problems of poor welding and short circuit caused by oxide generated by side wall oxidation and copper diffusion of the copper-nickel-gold bump are effectively solved, the long-term reliability is remarkably improved, meanwhile, the using amount of precious metal is small, the technology is ingenious, and the method is particularly suitable for the high-end display field of liquid crystal driving chips and the like.

This utility model discloses a tension-type no-drill curtain system, including a mounting rail with tension heads installed at its ends and at least one roller blind shell connected parallel to the mounting rail. The mounting rail is installed on the window frame via the tension heads at its ends, and the length of the roller blind shell is matched to the window frame size. This utility model's curtain track uses a multi-track design, making the no-drill mounting track independent of the roller blind tube. This eliminates the need to leave tensioning and expansion areas at both ends of the conventional tension-type no-drill roller blind tube. Therefore, compared to existing tension-type no-drill roller blinds, the roller blind tube length is set closer to the width of the window frame, allowing the width of the curtain fabric wound around it to better match the window frame. After installation, the curtain system of this utility model has a smaller gap between the curtain fabric and the window frame, stronger light-blocking and light-prevention capabilities, and a stronger shading effect on the window frame when unfolded, resulting in a more aesthetically pleasing overall appearance.

The invention relates to a preparation method of a self-degradable plugging agent and a reservoir protection drilling fluid, and belongs to the technical field of petroleum and natural gas extraction. The preparation method of the self-degradable blocking agent comprises the following steps: enabling 16.5 to 31.3 parts of polyethylene glycol, 50 to 68 parts of lactide monomer and 7.5 to 20.7 parts of carbonate to react under the condition of 0.056 to 0.084 parts of catalyst; the reaction temperature ranges from 135 DEG C to 150 DEG C. The self-degradable plugging agent prepared by the invention can realize compact plugging in the drilling process, reduces the invasion risk of liquid-phase and solid-phase particles of drilling fluid, and achieves the purpose of protecting a reservoir. The oil-gas reservoir oil-gas reservoir oil-gas reservoir oil-gas reservoir oil-gas reservoir oil-gas reservoir oil-gas reservoir oil-gas reservoir oil-gas reservoir oil-gas reservoir oil-gas reservoir oil-gas reservoir oil-gas reservoir oil-gas reservoir oil-gas reservoir oil-gas reservoir oil-gas reservoir oil-gas reservoir oil-gas reservoir oil-gas reservoir oil-gas reservoir oil-gas reservoir oil-gas reservoir oil-gas reservoir oil-gas reservoir oil-gas reservoir oil-gas reservoir oil-gas reservoir

The present invention provides a chip sealing ring structure and a preparation method thereof, a semiconductor chip and a preparation method thereof, wherein the preparation method of the chip sealing ring structure comprises: providing a chip, wherein a bottom protective layer is formed on the active surface of the chip; forming a sealing ring metal layer pattern on the bottom protective layer, wherein the sealing ring metal layer pattern is located around the active surface of the chip; forming an insulating dielectric layer on the bottom protective layer, wherein the insulating dielectric layer has an isolation opening for exposing the sealing ring metal layer pattern, wherein the isolation opening also exposes the bottom protective layer; forming a moisture-proof layer on the insulating dielectric layer and in the isolation opening, wherein the moisture-proof layer covers a first exposed portion of the sealing ring metal layer pattern and a second exposed portion of the bottom protective layer in the isolation opening. The present invention forms a moisture-proof layer on the surface of the sealing ring metal layer pattern, which can effectively prevent the metal layer from being directly exposed to the air during the manufacturing process and being oxidized or corroded by oxygen, water vapor or other gas and liquid, thereby greatly enhancing the gas-liquid barrier capability.

The invention discloses a fluid loss additive for drilling fluid and a preparation method thereof, and relates to the technical field of fluid loss reduction of drilling fluid. The invention relates to a filtrate reducer for drilling fluid. Comprising the following components in percentage by weight: 7%-15% of acrylamide, 4%-8% of 2-acrylamide-2-methylpropanesulfonic acid, 4%-8% of N-vinyl pyrrolidone, 2%-6% of acryloyloxyethyl trimethyl ammonium chloride, 0.8%-1.6% of a phenolic aldehyde composite cross-linking agent, 0.2%-0.8% of a zircon salt cross-linking agent, 0.1%-0.6% of an initiator, 0.3%-0.9% of an emulsifier and the balance of water. 3%-8% of hybrid zirconium diboride whiskers, 6%-16% of polyvinyl alcohol and the balance of water. The filtrate reducer disclosed by the invention can be firmly adsorbed with clay particles, shows good high-temperature and high-salt resistance and filtrate reduction performance, can resist the temperature up to 220 DEG C, can resist NaCl to be saturated, can resist Mg < 2 + > up to 20000 mg / L or above, and can resist Ca < 2 + > up to 40000 mg / L or above.

The purpose of the present invention is to provide: an organic compound represented by general formula (I), which is a material for an organic electroluminescent (EL) element having high efficiency and high durability, has excellent hole injection / transport performance, has electron blocking ability, and has high stability in a thin film state; also provided is an organic EL element having high efficiency and high durability by using the compound. In the formula, A represents a substituted or unsubstituted aromatic hydrocarbon group, a substituted or unsubstituted aromatic heterocyclic group, or a substituted or unsubstituted condensed polycyclic aryl group, B represents a substituted or unsubstituted carbazolyl group, C represents an unsubstituted naphthylene group, and n represents an integer from 1 to 2. R represents an unsubstituted aromatic hydrocarbon group, an unsubstituted aromatic heterocyclic group, or an unsubstituted condensed polycyclic aryl group, and L1-L3 represent a single bond, an unsubstituted divalent aromatic hydrocarbon group, an unsubstituted divalent aromatic heterocyclic group, or an unsubstituted divalent condensed polycyclic aryl group. The arylamine compound provided by the invention has excellent heat resistance and also has good hole transport capability. An organic EL element using the compound in a hole transport layer, an electron blocking layer, a light emitting layer, and a hole injection layer of the organic EL element exhibits good element performance. # imgabs0 #