20results about How to "Performance unchanged" patented technology

The invention discloses a photocatalytic polyether-ether-ketone ion exchange membrane as well as a preparation method and application thereof. The invention belongs to the field of polymer chemistry. The problem that the photocatalyst is difficult to recover in the prior art is solved. The preparation method comprises the following steps: preparing a polyether-ether-ketone film with amino and carboxyl side groups by using a film casting method and a chemical grafting method, preparing CoTiO3 nanofibers by using an electrostatic spinning method, preparing Bi-coated CoTiO3 by using a photodeposition method, and grafting Bi-coated CoTiO3 onto the polyether-ether-ketone film containing amino and carboxyl side groups by using a coordination field effect between metal ions and amino and carboxyl to obtain the CoTiO3 / Bi-coated CoTiO3 composite material. And the photocatalytic polyether-ether-ketone film is prepared. The prepared photocatalytic polyether-ether-ketone film has corrosion resistance and stability, can be applied to an extreme environment, can separate a photocatalyst from a reaction medium, realizes reuse, has the advantages of high degradation rate and high reducibility on various antibiotics and heavy metal ions, and can be applied to sewage treatment in various environments.

The invention discloses a liquid cooling hub motor, and relates to the technical field of hub motors. The rotor is used for driving the rim to rotate; the stator support is rotationally arranged on the inner circumferential side face of the rotor, and a stator is arranged on the outer circumferential side face of the stator support; and the cooling flow channel is integrally in a wave shape and is arranged in the stator support in a surrounding mode, an inlet channel is formed in the first end of the cooling flow channel, and an outlet channel is formed in the second end of the cooling flow channel. According to the liquid-cooled hub motor, the technical problem that the hub motor is overheated when the hub motor is continuously used at overpower in the prior art is solved, the cooling liquid is circularly input into the cooling flow channel through the inlet channel, heat on the stator support is taken away, and the performance of the hub motor can still be kept unchanged when the hub motor is continuously used at overpower. And the overall structure of the cooling flow channel accords with fluid mechanics, and the cooling liquid does not form turbulent flow and vortex when flowing in the cooling flow channel, so that the energy consumption required for driving the cooling liquid to flow can be reduced.

The invention discloses a stress detection method for graphene composite piezoelectric material integrated optical fiber sensing, and relates to the field of multi-mode sensor integration, and the method comprises the steps: generating a signal through a signal generator, and transmitting the signal to a composite flexible piezoelectric material through a power amplifier; the composite flexible piezoelectric material is used for generating ultrasonic waves, and the ultrasonic waves are conducted in the tested material; the fiber grating sensing and demodulation module is used for demodulating ultrasonic waves conducted in the tested material and transmitting the demodulated ultrasonic waves to the upper computer; the upper computer is used for displaying, storing and processing the demodulated ultrasonic signals, the stress borne by the detected material is obtained, and stress detection of the graphene composite piezoelectric material integrated optical fiber sensor is completed. According to the invention, the problems that the micro stress change in a complex structure cannot be detected in real time and the application environment is limited in the prior art are solved.

The application discloses a modified polypropylene material and a preparation method and application thereof. The modified polypropylene material contains the following raw materials in percentage by mass: 25-32% of homopolymerization polypropylene, 34-42% of modified copolymerization polypropylene, 13-25% of inorganic filler, 5-13% of toughening agent, 5.4-7.5% of coupling agent and 0.4-0.6% of stabilizer; wherein, the coupling agent contains at least two primary amine groups, and the modified copolymerization polypropylene contains aldehyde groups. The modified polypropylene material has a reversible cross-linking macromolecular network structure formed by mutual cooperation between the raw materials, and has excellent comprehensive performance in the aspects of improving the strength, low-temperature resistance, toughness and processing performance of the modified polypropylene material.

The invention provides a method for preventing a pole piece from being bent and fractured, which is characterized in that the amount of powder of the pole piece in a partial bending area is controlled according to a certain rule, and the acting force of the powder in an area with larger curvature on a current collector is reduced, so that the pole piece is prevented from being locally or completely fractured at the bending part; through two items of inspection, the accuracy and the action range of the position of the local thinned area are ensured, the improvement effect of the technology on the bending fracture of the pole piece is exerted to a greater extent, the problem that the thick coated pole piece or the high compacted pole piece is locally or completely fractured at the bending position is solved, and the reliability of the pole piece is improved. And a thick-coated pole piece and a high-compaction pole piece can be effectively prevented from being broken at the bending part.

The utility model relates to the technical field of heat shrink tubes, and discloses a split type silicon rubber heat shrink tube, which comprises a first heat shrink tube, a first pipeline, external threads, a second heat shrink tube, a second pipeline, a reinforcing ring, a tightening tube, a hoop shell, a worm, a spiral section and an anti-skid gasket, and the reinforcing ring is used for improving the mechanical strength of the pipeline, and deformation under pressure is avoided. The split type silicone rubber heat shrink tube has the primary advantages that the sealing efficiency is high, airtight and watertight sealing of the pipeline connecting position can be achieved through accurate embedding of the inner threads and the outer threads and the design of a shrinkage joint of the tightening tube, and the sealing technology is particularly suitable for liquid and gas transmission systems with strict requirements; wherein the sealing washer provides an additional sealing guarantee, so that leakage is avoided in a high-pressure environment, and the safety and the reliability of a system are improved.

The invention discloses a bio-based anti-adhesion hydrogel dressing as well as a preparation method and application thereof, belongs to the technical field of biomedical materials, and provides a preparation method of the bio-based anti-adhesion hydrogel dressing, which comprises the following steps: mixing a bio-based monomer and water to obtain a bio-based monomer aqueous solution; mixing with a cross-linking agent, and reacting to obtain a reacted bio-based monomer aqueous solution; mixing the natural organic compound, absolute ethyl alcohol and polyhydric alcohol to obtain a mixed solution; carrying out hydration on the mixed solution and the reacted bio-based monomer aqueous solution, and reacting to obtain a completely reacted solution; adding a silicone oil mixture and freezing to obtain a hydrogel dressing; the natural organic compound is one or more of tannic acid, procyanidine or gallic acid. The skin-like hydrogel dressing is prepared by mixing the raw materials through a one-pot method, and the skin-like hydrogel dressing can be applied to a wound to be attached to the wound and achieve the effect of preventing blood adhesion.

The present invention relates to the technical field of groundwater pollution control, and specifically discloses a blocking material for risk control of polluted groundwater and a preparation method thereof. The blocking material for risk control of polluted groundwater provided by the present invention comprises a powder and a water material, and the powder comprises the following components: 35% to 55% bentonite, 15% to 30% coal gangue, 5% to 15% alkali-modified passion fruit shell, 20% to 40% modified adsorbent and 0.5% to 1.5% activated carbon fiber; the modified adsorbent is a medical stone adsorbent modified by water glass. The blocking material for risk control of polluted groundwater provided by the present invention has a large specific surface area and a dense pore structure. When used in the risk control of polluted groundwater, it is conducive to multiple reactions such as adsorption-ion exchange-filtration-precipitation with groundwater pollutants, and can block most pollutants; it can exist for a long time in a harsh groundwater environment and keep its performance unchanged, and the blocking effect is sustainable.

This invention provides a comparator circuit and an image sensor, belonging to the field of electronic circuit technology. The image sensor includes at least: a current mirror, a ramp-coupled input transistor, a pixel-coupled input transistor, and a current source input transistor; a ramp reset transistor and a pixel reset transistor; the current mirror includes a first mirror branch and a second mirror branch; a first mirror branch load controller and a second mirror branch load controller, allowing the first mirror branch load controller to connect to the first mirror branch and allowing the second mirror branch load controller to connect to the second mirror branch; wherein, when the comparator circuit is reset, when the first reset signal is high, the first and second mirror branch load controllers are connected or disconnected from the circuit, reducing the on-state voltage drop of the first and second mirror branches. The comparator circuit and image sensor provided by this invention can balance the comparator's noise performance while increasing the maximum input swing.

The application relates to a lock device of a gate slot gate and relates to the technical field of gates, and aims to solve the problem that the gate is prone to water leakage. The gate slot gate comprises a gate slot and a gate leaf, the gate leaf is slidably arranged in the gate slot, a driving element for driving the gate leaf is arranged at the top of the gate slot, a locking mechanism is arranged between the gate slot and the gate leaf, the locking mechanism comprises a locking frame, a locking rod, a locking cylinder, an upper locking block and a lower locking block, the locking rod is connected to the gate leaf, the locking rod is arranged along the width direction of the gate leaf, the locking frame is connected to the gate slot, the locking cylinder is connected to one end of the locking frame, a connecting plate is arranged on the output end of the locking cylinder, the upper locking block is connected to the connecting plate, the lower locking block is connected to the other end of the locking frame, the upper locking block and the lower locking block are both provided with semicircular grooves for fixing the locking rod, and the upper locking block is matched with the lower locking block. The application has the effects of ensuring the stability and safety of the gate.

The present invention discloses a complex signal field recovery system based on native optical carrier, including a transmitting end digital signal processing module, a digital-to-analog converter, an electro-optical modulator, an optical fiber link, an optical coupler, a dispersion element, a photodetector, an analog-to-digital converter and a receiving end digital signal processing module; the transmitting end digital signal processing module performs nonlinear pre-compensation and DC bias correction of the electro-optical modulator; the electro-optical modulator converts the electrical signal from the digital-to-analog converter into an optical signal carrying target information, and generates a native optical carrier at the same time; the dispersion element performs dispersion on the optical signal passing through; and the receiving end digital signal processing module performs signal recovery operations. The present invention also discloses a complex signal field recovery method, including the following steps: electro-optically modulating an optical carrier signal using an electro-optical modulator with a finite extinction ratio; receiving an optical signal using a phase recovery receiver; and performing signal field recovery based on an improved Gerchberg‑Saxton algorithm in the receiving end digital signal processing module.

According to the preparation method, ZIF-67 is taken as a template, nickel nitrate and copper porphyrin are added at the same time, and the metalloporphyrin intercalated double-metal hydroxide material is successfully prepared through acid etching. The material is composed of copper porphyrin Cu-TCPP and hollow NiCo-LDH, and has a hollow porous structure and a large specific surface area. Benefited from the synergistic effect of Cu-TCPP and NiCo-LDH, only 204mv overpotential is needed when the material reaches the current density of 10mA. Cm <-2 >, the material is superior to transition metal-based OER electrocatalysts reported in most literatures, the performance is almost unchanged after a stable test for 12 hours, and the material has a relatively good application prospect.

The invention belongs to a material modification technology, relates to a preparation method of a TPV (Thermoplastic Vulcanizate) system, and particularly relates to a method for preparing a phenolic aldehyde system TPV material by a one-step method and a product. An existing TPV production system is a two-step method, namely, in the first step, rubber and plastic are blended through an internal mixer or double screws to prepare master batches, in the second step, a vulcanization system is added, and a TPV product is obtained through double-screw dynamic vulcanization. According to the invention, the prejudice in the prior art is overcome, the conventional TPV two-step production is changed into one-step production, the process is simplified, many intermediate links are reduced, and particularly, the performance of the obtained product is improved, and the stability is very good and exceeds the imagination of people.

The utility model relates to a loudspeaker with a single magnetic circuit. The loudspeaker comprises a support, a magnetic bowl, main magnetic steel, a main pole piece, a voice coil, a voice diaphragm and a dome, positioning protrusions are arranged at the corners of the upper surface of the support. A positive electrode bonding pad and a negative electrode bonding pad are embedded on the bracket; the corner positions of the magnetic bowl horizontally extend outwards to form extension parts; the edge position of the magnetic bowl is vertically bent downwards to form a fitting part, and the fitting part of the magnetic bowl is adhered to the inner wall of the bracket through the fitting part; one surface of the main magnetic steel is adhered to the inner wall of the magnetic bowl; the main pole piece is adhered to one surface, back to the magnetic bowl, of the main magnetic steel; two lead heads on the voice coil are respectively welded with the lower surface of the positive electrode bonding pad and the lower surface of the negative electrode bonding pad; the main pole piece is positioned in the voice coil; the voice diaphragm is adhered to the lower surface of the bracket; and the dome is adhered to the upper surface of the voice diaphragm. According to the utility model, the structural design is optimized, so that only a single magnetic circuit is used, and the product cost is greatly reduced.

The utility model relates to the technical field of laminated slabs, and discloses a prefabricated laminated slab structure which comprises a slab body, mesh steel bars are arranged in the slab body, and truss steel bars with one ends penetrating to the outer side of the slab body are fixedly installed in the slab body. By arranging the mesh reinforcing steel bars and the truss reinforcing steel bars and reasonably arranging the staggered intervals, the overall performance is not changed while part of the reinforcing steel bars are reduced, the processing time of the laminated slab is shortened, the balance of quality, efficiency and cost is achieved, and meanwhile the connecting angle of the web member reinforcing steel bars is adjusted, so that the overall performance of the laminated slab is improved. Supporting points during installation of a large number of truss steel bars can be reduced, the construction efficiency can be improved, meanwhile, the diameter and the overall height of the steel bars are adjusted and used according to the load-bearing requirement, the overall quality is guaranteed, meanwhile, needed work during production of the laminated slab is reduced as much as possible, and dual optimization of the structural performance and the construction efficiency is achieved.

The invention relates to an over-etching reworking method and a solar cell. The over-etching reworking method comprises the following steps: detecting a cell piece after a preset solar cell preparation process; collecting the over-etched to-be-reworked battery piece according to a detection result; re-texturing the other surface, opposite to the over-facet surface of the to-be-reworked battery piece, of the to-be-reworked battery piece; the over-etching surface of the to-be-reworked battery piece is an etching surface of which the actual etching depth is greater than the target etching depth in the to-be-reworked battery piece. As the to-be-reworked battery piece does not need to be cleaned, and the other surface, opposite to the over-facet surface, of the to-be-reworked battery piece is directly textured again, on one hand, gram weight loss caused by cleaning of a reworking cleaning machine to the battery piece can be avoided, on the other hand, only one surface is textured, and the gram weight loss caused by texturing can be further reduced. The influence caused by over-etching of the to-be-reworked battery piece can be compensated through a subsequent conventional solar battery preparation process, and the quality of a solar battery finished product is ensured.

The invention discloses a high-permeability flexible gas sealing material and a preparation method thereof, and belongs to the technical field of sealing material preparation. The high-permeability flexible gas sealing material is composed of the following components in parts by weight: 20-30 parts of lime, 10-12 parts of magnesium oxide, 18-22 parts of polyester compounds, 20-28 parts of composite resins, 2-5 parts of stabilizers, and 1-4 parts of silane coupling agents, wherein the polyester compound is prepared from 2-methyl-2-propyl-1,3-propylene glycol, 2,4-dihydroxy-3,3-dimethylbutyric acid and acrylic acid, and the composite resin is prepared from 1,1,1-tri-p-hydroxyphenylethane, 5-norbornene-2-methylamine and 2,3-dihydrofuran. The gas sealing material prepared by the method has excellent stability, corrosion resistance and flexibility.

The invention discloses a nanoscale plugging agent for oil field drilling fluid, which is prepared from the following raw materials: a water phase, an oil phase and an initiator solution, and the weight ratio of the water phase to the oil phase is (40-60): (40-60). According to the plugging agent for the drilling fluid, the reaction monomers of the acrylamide, the acrylic acid, the 2-acrylamide-2-methylpropanesulfonic acid and the N, N-methylene bisacrylamide are combined, so that the prepared plugging agent for the drilling fluid has a relatively good plugging effect in mortar, and can still maintain a good plugging effect in a high-temperature and high-salt environment. And white oil with the mark numbers of 3 #, 5 # and 10 # is adopted as an oil phase, and the formed microemulsion type plugging agent emulsion has the nano-scale particle size, is suitable for nano-scale gaps of shale, and has the advantages of good plugging effect and stable effect. Meanwhile, the emulsifier combination of Tween 80 and peregal O-25 is adopted, so that the formed plugging agent polymer is nanoscale and can be used for plugging pores of the shale, reducing water loss and preventing borehole diameter shrinkage caused by hydration of the shale.

The invention relates to the technical field of composite boards, in particular to a polyimide fiber and basalt fiber composite board and a preparation method thereof. The composite material comprises a base plate formed by a plurality of layers of blended fabrics which are tiled, overlapped and bonded together, warp yarns of adjacent blended fabrics are perpendicular to each other, and the blended fabrics are blended fabrics of polyimide fibers and basalt fibers which are subjected to oxidation modification; the upper and lower surfaces of the substrate have polyamide-imide resin layers. The H2O2 solution is used for oxidizing the fabric, so that carbon-carbon bonds of polyimide are oxidized and broken, amido bonds are kept stable, the specific surface area of fibers is increased, the adhesion of the surfaces of the fibers is improved, the binding force of the fibers and resin is enhanced, and the strength and toughness of the composite board are enhanced. The polyamide-imide resin layers are formed on the upper surface and the lower surface of the base plate, so that the crack resistance and the impact resistance of the composite board are greatly enhanced, and meanwhile, the heat preservation property and the attractive degree of the composite board are improved.

The invention discloses a cellulose membrane-based fluorescence colorimetric sensor based on a Tb-AMP compound as well as a preparation method and application thereof, and belongs to the cross technical fields of new materials, fluorescence sensors, inspection and detection and the like. The fluorescent colorimetric sensor takes a cellulose membrane as a substrate, and the cellulose membrane is loaded with a Tb < 3 + > and AMP compound after carboxymethylation. Through the synergistic effect of the lanthanide series metal Tb-AMP compound and in combination with the porous characteristic of the cellulose membrane, high sensitivity, high selectivity and visual detection of FQs are achieved, meanwhile, the performance is not changed after the cellulose membrane is stored for 60 days, the cellulose membrane has long-term stability, the cellulose membrane serves as a substrate, the raw material cost is low, and the method is suitable for industrial production. The method can be widely applied to real-time visual detection of FQs in practical samples such as drinking water, environmental water and milk.