580 results about "Mechanical stability" patented technology

The invention provides a sphere-like silicon-carbon negative electrode material and a preparation method and application thereof, and particularly relates to the technical field of negative electrode materials, the negative electrode material comprises a sphere-like porous carbon skeleton, silicon nanoparticles distributed in the sphere-like porous carbon skeleton, and an amorphous carbon layer coating the surface of the sphere-like porous carbon skeleton, the particle appearance of the sphere-like porous carbon skeleton is of a round irregular or asymmetric polyhedral structure and comprises one or more of a potato shape, an ellipse shape, an olive shape, a long strip shape and a pomegranate shape, the particle of the sphere-like porous carbon skeleton is provided with a plurality of asymmetric faces, fillets are formed between the faces, and the radius of the fillets does not exceed 20 microns. The problem of structural damage of the material under the action of external force such as rolling can be effectively relieved, good mechanical stability is kept, excellent bonding performance can be achieved in the electrode coating process, the ion transmission path of the material is improved, and the electronic conductivity and the lithium ion diffusion performance are improved.

The invention discloses a hydraulic mechanism for a water-cooled magnet structure with high mechanical stability. The hydraulic mechanism comprises a cylinder body, a piston, a check ring, a pressure equalizing pad, a limiting block, a first force transmission check ring, a first anti-rotation pin, a second force transmission check ring, a second anti-rotation pin, a first force transmission column and a second force transmission column. The water-cooled magnet has the advantages that axial stress application can be carried out on the magnet coil assembly, the pressing force on the magnet coil assembly is improved, the problems of tension fracture and damage caused by coil stress overrun due to overlarge radial expansion electromagnetic force of a magnet coil bit piece and an insulating piece are solved, and the high mechanical stability of the water-cooled magnet is improved.

The invention discloses a novel internally-inserted water-cooled magnet container assembly for a hybrid magnet with high mechanical stability, which comprises an upper cylinder component, a container end cover, a hydraulic machine component, a central tube component, an inner support component, a middle cylinder component, a lower cylinder component, an electric connection component and a first conductive flexible connector, and a magnet coil assembly comprises a plurality of radially-sleeved coils; the hydraulic machine assembly comprises a cylinder body, a piston, a check ring, a pressure equalizing pad, a limiting block, a first force transmission check ring, a first anti-rotation pin, a second force transmission check ring, a second anti-rotation pin, a first force transmission column and a second force transmission column. The device has the advantages that axial force application can be performed on the magnet coil assembly, the pressing force on the magnet coil assembly is increased, the problems of tension fracture and damage caused by coil stress overrun due to overlarge radial expansion electromagnetic force of a magnet coil bit piece and an insulating piece are solved, the dismounting and maintenance process of the mixed internally-inserted water-cooled magnet device is simple and rapid, and the efficiency is high. And the dismounting efficiency is improved.

The invention relates to a biaxially oriented polypropylene composite film for a capacitor and a preparation method of the biaxially oriented polypropylene composite film. The biaxially oriented polypropylene composite film is of an ABA three-layer structure; wherein the layer A is prepared from the following raw materials: PP, a nucleating agent and a composite filler of MAH-g-PP and nanoparticles; the layer B is prepared from the following raw materials: PET master batch, modified silicon dioxide and a brush polymer. According to the preparation method, the three-layer structure composite film is prepared, the layers are firmly combined through covalent bonds, hydrogen-bond interaction and the like, and the interlayer peel strength is remarkably improved; a nano particle filler with a high dielectric constant is introduced into the A-layer structure, so that the dielectric strength of the film is improved, and meanwhile, the film has relatively high anti-breakdown strength; and the layer B effectively improves the mechanical stability of the film material, and has higher mechanical property and material rigidity compared with the traditional PP film.

The invention belongs to the field of high polymer materials, and discloses a double-trigger programmable degradable PHA composition and a preparation method thereof. A cured film structure formed by the composition sequentially comprises an outer protective layer, a trigger layer and an inner functional layer from outside to inside, wherein the outer protective layer takes polyhydroxyalkanoate as a base material, a reversible cross-linked network is introduced into the outer protective layer, the trigger layer is provided with humidity and ion double-trigger microcapsules, and the inner functional layer is used for bearing functional auxiliaries. The cured film can maintain low permeability and mechanical stability before application. After application, under the synergistic effect of specific moisture and ions, the trigger layer is activated, so that the cured film is subjected to step-type improvement of moisture permeability in a preset time window, and a through hole is formed. And finally, integral disintegration is realized through physical structure failure. The technology can be applied to the fields of seed coating and the like, the activity of a biological base material can be ensured by adopting a low-temperature process with the temperature lower than 50 DEG C, and unification of stable protection before application and on-demand disintegration after application is achieved.

The invention discloses an installation positioning device, a superconducting magnet system and a fusion reactor device, and belongs to the technical field of fusion reactor engineering. The mounting and positioning device comprises a back plate assembly and a clamping assembly, wherein the back plate assembly is used for connecting a coil main body of the superconducting magnet system; the clamping assembly comprises a first insulating part, two clamping parts and a plurality of adjusting parts, and the first insulating part forms a mounting cavity which is at least used for accommodating a coil joint of the superconducting magnet system; the first insulating part is arranged between the two clamping parts, and the clamping parts are connected with the back plate assembly; the multiple adjusting pieces are arranged outside the first insulating piece in a surrounding mode, and the adjusting pieces are connected with the two clamping pieces respectively and used for adjusting the clamping force between the two clamping pieces. The coil connector is positioned and fixed for multiple times through the back plate assembly and the clamping assembly, the mechanical stability and the electrical insulation performance of the coil connector are improved, and the disassembly, assembly and maintenance cost is reduced.

The invention relates to a low-ice-adhesion super-hydrophobic anti-icing coating as well as a preparation method and application thereof. Single-end amino fluorosilicone oil is grafted to the surface of an aldehyde group functionalized metal organic framework material through an amino-aldehyde group condensation reaction to obtain a hydrophobically modified metal organic framework material, the hydrophobically modified metal organic framework material is compounded with a synthesized fluorinated acrylate copolymer, and the coating is prepared through ultrasonic dispersion and spraying curing processes. According to the prepared low-ice-adhesion super-hydrophobic anti-icing coating, through the synergistic effect of fluorosilane grafting modification and a micro-nano structure, the excellent performance that the static water contact angle is larger than or equal to 160 degrees, the rolling angle is smaller than or equal to 2 degrees, and the ice adhesion strength is smaller than or equal to 20 kPa is achieved. Compared with a traditional anti-icing coating, a metal organic framework material functional modification strategy is adopted, the ice adhesion force is remarkably reduced while the mechanical stability of the coating is kept, and uniform film forming on the surfaces of base materials such as aluminum wires can be achieved through the spraying technology. The coating is suitable for anti-icing protection of the aluminum conductor of the power transmission line, and has the characteristics of long-acting icing resistance and low ice adhesion.

The application discloses a preparation method of graphene aerogel and application thereof, and the graphene aerogel is prepared from a three-dimensional network of graphene oxide as a continuous matrix, hydrophilic polyimide fibers as a reinforcing framework, and metal-organic coordination bonds as functional nodes by coordinating cobalt ions with ethylenediamine tetramethylene phosphonic acid, and is prepared through a hydrothermal reaction, freeze drying and high-temperature annealing; the preparation method is simple, the process is easy to control, the electromagnetic shielding performance of the prepared graphene aerogel reaches 48 dB, and the graphene aerogel has good mechanical stability in the range of-75 to 150 DEG C; under a pressure of 1 kg, the compression time and recovery time of the graphene aerogel are 30 ms and 27 ms respectively, and the graphene aerogel meets the commercial standards of sensing materials and shielding materials.

The invention discloses a biomass-based thermal insulation coating as well as a preparation method and application thereof, and belongs to the technical field of thermal insulation materials. The heat-insulating coating is composed of a biomass-based supramolecular adhesive and a heat-insulating filler; the adhesive is formed by synergistic crosslinking of lipoic acid and tannic acid through dynamic covalent bonds and multiple hydrogen bonds, and the adhesive strength higher than 1.0 MPa can be provided; the heat insulation filler is a hollow glass bead system with optimized particle size and true density. The core of the invention lies in that a tough and dynamic supramolecular network formed by the biomass-based adhesive not only endows the coating with excellent interface bonding force and mechanical stability, but also can cooperatively construct a more efficient thermal barrier structure through tight compounding with a multi-scale thermal insulation filler, so that the heat conductivity coefficient of the coating can be as low as 0.03 W / (m.K). The coating has the comprehensive advantages of being environmentally friendly and efficient in heat insulation, and is suitable for the field with double strict requirements for reliability and heat insulation.

A self-healing polyurethane-based coating composition, a polyurethane-based coating film including the same, and methods of manufacturing the coating composition and the coating film, in which design of an oligomer containing a disulfide functional group is capable of achieving self-healing performance at room temperature and ensuring appropriate fluidity, whereby a coating film can be manufactured by spraying. The composition further includes a polyisocyanate hardener, and the oligomer is formed by polymerizing a carbonate-type diol, an alicyclic isocyanate, and an aromatic disulfide-type diol. This specific molecular design provides high self-healing efficiency, enhanced optical transparency, and excellent mechanical stability. The coating film achieves a self-healing efficiency of 80% or more, a transmission rate of 85% or higher, and a sagging rate of 5% or less. The manufacturing process controls the molar ratios of hydroxyl (—OH) to isocyanate (—NCO) groups, optimizing cross-linking and ensuring durability in the final coating.

The invention belongs to the technical field of pharmaceutical preparations, and relates to a riptacaine cream as well as a preparation method and application thereof, and the preparation method of the riptacaine cream comprises the following steps: preparing carbomer gel, preparing an oil phase, preparing a water phase, primarily emulsifying, homogenizing and gelating, finely homogenizing and filling. According to the invention, polyoxyethylene (54) hydrogenated castor oil is innovatively used as an auxiliary material, triple functions of a co-melting solvent, an emulsifying agent and a stabilizing agent are realized at the same time, and any liquid grease, solvent or other surfactants do not need to be additionally added in the prescription. Through a unique'water-gel-oil 'composite structure design, oil drops are physically wrapped by a carbomer gel network and are positioned in network pores, so that the mechanical stability superior to that of a conventional emulsion is provided, and no layering is generated through high-speed centrifugal test verification. In conclusion, the invention develops the riptacaine preparation which has the advantages of few types of auxiliary materials, higher stability, quicker effect taking and capability of expanding a new dosage form and a new process.

The invention discloses a method for metallizing ceramic by using whisker pinning, and relates to a method for metallizing ceramic. The technical problems that an existing ceramic metallization process is complex, the application range is small, and cost is high are solved. According to the method, boric acid is adopted to heat the surface of the ceramic containing the Al element, the aluminum borate crystal whiskers in the micro-nano size level can grow, and the crystal whiskers are high in high-temperature strength; then the ceramic with the whisker structure and the metal are subjected to hot pressing at a high temperature, the metal material is softened at a high temperature along with temperature rise, the whiskers can be pressed into the metal, a microcosmic pinning structure is formed, connection between the ceramic and the metal is achieved, and metallized ceramic is obtained; and then in the cooling process, the metal is cooled and shrunk, stress is formed on the crystal whiskers, and the binding force of the ceramic and the metal is improved. According to the method, ceramic metallization is achieved through whisker pinning, operation is simple and effective, and the obtained metallization layer is excellent in performance, good in mechanical stability and wide in application range and has good application prospects.

The invention relates to the technical field of metal surface modification, in particular to a magnesium alloy anticorrosive coating and a preparation method and application thereof. The method comprises the following steps: firstly, performing micro-arc oxidation treatment on magnesium alloy to form a substrate layer; then, the micro-arc oxidation coating is subjected to hole sealing treatment through dendritic mesoporous silica loaded with a corrosion inhibitor, and the self-repairing function is given to the micro-arc oxidation coating; then, a layered self-similar coating composed of dendritic mesoporous silica loaded with a corrosion inhibitor and a resin matrix is constructed on the surface of the hole sealing layer, and interface bonding and compactness are enhanced; finally, dendritic mesoporous silica, cellulose nanocrystals, 1H, 1H, 2H, 2H-perfluorodecyl triethoxy silane, organic resin and tetraethoxy silane are introduced, and the super-hydrophobic coating with a micro-nano composite firm structure is formed on the surface layer. The obtained magnesium alloy anti-corrosion coating integrates the characteristics of long-acting corrosion resistance, super-hydrophobicity, self-repairing, high mechanical stability and the like, and the technical problems that a traditional magnesium alloy anti-corrosion coating is prone to physical or chemical damage and insufficient in durability are effectively solved.

The invention discloses a preparation process of a Baloxavir marboxil and vitamin C eutectic crystal form. The X-ray powder diffraction pattern of the Baloxavir marboxil and vitamin C eutectic crystal form under Cu-Ka radiation has diffraction angle 2theta values of 8.7 + / -0.2 degrees, 10.4 + / -0.2 degrees, 10.7 + / -0.2 degrees, 13.1 + / -0.2 degrees, 13.8 + / -0.2 degrees, 14.2 + / -0.2 degrees, 15.7 + / -0.2 degrees, 16.1 + / -0.2 degrees, 16.3 + / -0.2 degrees, 17.4 + / -0.2 degrees, 18.5 + / -0.2 degrees, 19.8 + / -0.2 degrees, 19.8 + / -0.2 degrees, 20.1 + / -0.2 degrees, 20.8 + / -0.2 degrees, 20.9 + / -0.2 degrees, 21.6 + / and characteristic peaks exist at the positions of 25.6 + / -0.2 degrees, 26.4 + / -0.2 degrees, 26.7 + / -0.2 degrees, 27.1 + / -0.2 degrees, 28.0 + / -0.2 degrees, 28.2 + / -0.2 degrees, 29.7 + / -0.2 degrees, 29.9 + / -0.2 degrees and 31.3 + / -0.2 degrees. The eutectic crystal form of Baloxavir marboxil and vitamin C provided by the invention has stable physicochemical properties, excellent solid stability and mechanical stability, and can be stably stored for a long time, and the preparation method is simple and convenient, has good repeatability, and has important application value for the development of the medicine in the future.

The invention discloses a low-free-monomer waterborne polyurethane adhesive and a preparation method thereof, and relates to the technical field of adhesive preparation, the low-free-monomer waterborne polyurethane adhesive comprises a main chain structure composition, a functional additive, a reaction control and optimization additive and an auxiliary reagent, the main chain structure composition comprises low-monomer residual diisocyanate and polymer polyol, and the functional additive comprises a low-free-monomer residual diisocyanate and a low-free-monomer residual diisocyanate; by introducing a flexible chain segment and optimizing an emulsification process, an adhesive film has better hydrophobicity and a microcosmic phase separation structure, the water soaking resistance is greatly improved, the adhesive film has outstanding water resistance, a unique formula design ensures that an adhesive layer cannot be subjected to strength attenuation due to aging in a long-term use process, the bonding durability is excellent, and the adhesive film has a good application prospect. The preparation method has the advantages of reasonable process design, mild and controllable reaction conditions, good process applicability and good storage stability, and through stabilization treatment, the obtained emulsion has the advantages of uniform particle size, good mechanical stability and storage stability, and long shelf life.

The application provides a composite low-voltage power cable, and belongs to the technical field of cables.The composite low-voltage power cable comprises an outer shell and a copper strip.Five groups of isolation sleeves are fixed together by a connecting block to ensure stable connection between the isolation sleeves and the copper strip, prevent displacement under external pressure, ensure stability of the copper strip, avoid circuit failure, and support columns are arranged at the centers of the isolation sleeves to provide support force, maintain stability of the isolation sleeves, prevent deformation or loosening, improve stability of the cable under high pressure or bending, spiral blades are clamped in the isolation sleeves to promote air circulation, improve heat dissipation performance, reduce heat accumulation, and reduce the risk of cable failure, the spiral blades also help maintain the shape of the isolation sleeves, prevent deformation caused by external pressure, and the combination of the support columns, the spiral blades and the isolation sleeves improves mechanical stability of the cable, which can withstand greater external impact or tension and ensure stable operation of the cable under high load.

The invention discloses a self-lubricating wear-resistant rolling bearing, and relates to the technical field of bearings, the self-lubricating wear-resistant rolling bearing comprises a reinforcing assembly used for enhancing the strength of a plastic sliding surface rolling bearing, the reinforcing assembly comprises an inner ring and an outer ring, and the outer surface of the outer ring is provided with a plurality of metal sheets used for enhancing the structural strength of the rolling bearing. According to the self-lubricating wear-resistant rolling bearing, in order to further enhance the strength of the rolling bearing, firstly, a metal plate and a metal sheet are added into the inner plastic sliding surface and the outer plastic sliding surface respectively, and the metal surfaces are subjected to roughening treatment in an injection molding integrated forming mode; the bonding force between the inner plastic sliding face and the outer plastic sliding face is enhanced, the mechanical stability of the honeycomb structure of the honeycomb sleeve is used for dispersing pressure, weight increase caused by the fact that the whole plastic is too thick is avoided, the supporting strength is guaranteed, meanwhile, the material consumption is reduced, and finally the rolling bearing is more stable in operation, longer in service life and higher in bearing capacity.

The invention provides a polyvinyl alcohol / chitosan composite compression hemostatic sponge with an antibacterial function and a preparation method thereof, and belongs to the technical field of medical materials. The polyvinyl alcohol / chitosan composite compression hemostatic sponge with the antibacterial function, provided by the invention, comprises a dual-network hydrogel structure formed by carboxymethyl chitosan and aldehyde polyvinyl alcohol; the double-network hydrogel structure has high stability and fixity, so that the composite compression hemostatic sponge has excellent stability. Raw materials used in the invention comprise carboxymethyl chitosan, formylated polyvinyl alcohol and antibacterial peptide, and the three raw materials are connected through covalent bonds and ionic bonds to form a dual-network hydrogel structure. By introducing gallic acid and copper chloride, a metal-organic network structure can be formed, the mechanical stability of the composite compression hemostatic sponge can be further improved, and the antibacterial performance of the composite compression hemostatic sponge can be further improved.

The invention discloses a preparation process of a Baloxavir marboxil and L-tartaric acid eutectic crystal form. The X-ray powder diffraction pattern of the Baloxavir marboxil and L-tartaric acid eutectic crystal form under Cu-Ka radiation has diffraction angle 2theta values of 8.7 + / -0.2 degrees, 10.8 + / -0.2 degrees, 11.6 + / -0.2 degrees, 13.2 + / -0.2 degrees, 13.8 + / -0.2 degrees, 14.3 + / -0.2 degrees, 15.8 + / -0.2 degrees, 16.2 + / -0.2 degrees, 16.4 + / -0.2 degrees, 17.5 + / -0.2 degrees, 18.6 + / -0.2 degrees, 18.9 + / -0.2 degrees, 19.4 + / -0.2 degrees, 19.8 + / -0.2 degrees, 20.1 + / -0.2 degrees, 20.7 + / and characteristic peaks exist at the positions of 25.7 + / -0.2 degrees, 26.4 + / -0.2 degrees, 26.8 + / -0.2 degrees, 27.6 + / -0.2 degrees, 28.3 + / -0.2 degrees, 28.6 + / -0.2 degrees, 29.1 + / -0.2 degrees, 29.7 + / -0.2 degrees, 31.4 + / -0.2 degrees, 32.0 + / -0.2 degrees, 35.4 + / -0.2 degrees, 35.8 + / -0.2 degrees, 36.1 + / -0.2 degrees, 36.7 + / -0.2 degrees and 37.4 + / -0.2 degrees. The Baloxavir marboxil and L-tartaric acid eutectic crystal form provided by the invention has stable physicochemical properties, excellent solid stability and mechanical stability, and can be stably stored for a long time, the preparation method is simple and convenient, the repeatability is good, and the Baloxavir marboxil and L-tartaric acid eutectic crystal form has important application value for the development of the medicine in the future.

The utility model relates to the technical field of nuclear fusion, and discloses an uninsulated superconducting coil which comprises a coil framework. The superconducting tape is wound on the coil framework to form a multi-turn superconducting tape winding; the metal strip is wound between turns of the superconducting strip; and a welding layer formed by a metal solder is filled between the metal belt and the superconducting belt material. The turn-to-turn resistance of the superconducting tape in the uninsulated superconducting coil can be increased through parallel winding of the metal tape and the superconducting tape, so that the time constant of the uninsulated superconducting coil in the charging and discharging process is reduced, meanwhile, a gap between the metal tape and the superconducting tape is filled with welding flux, and the metal tape and the superconducting tape are welded together through a formed welding layer. The interturn combining capacity of the non-insulation superconducting coil is enhanced, the mechanical stability of the non-insulation superconducting coil is enhanced, meanwhile, the heat capacity of the non-insulation superconducting coil can be increased and a cold conduction channel can be increased by winding and welding a metal belt between turns in parallel, so that the cold conduction effect is enhanced, and the overall performance of the non-insulation superconducting coil is improved.

The application discloses a kind of energy storage offshore wind power generation equipment and its using method, it is related to offshore wind power generation technical field, including at least one tower, the top of the topmost tower is installed generator set, the top of generator set input shaft is connected with main shaft through coupling, and the top of main shaft is installed three-blade vertical paddle group;The top of the topmost tower is installed with segmented shaft rotating support cylinder coaxial with main shaft, and four-column C-shaped bracket is fixedly installed on the lower part of the left and right outer walls of segmented shaft rotating support cylinder. The application solves the problem of insufficient lubrication caused by the decrease of lubricant viscosity in high temperature environment, enhances the corrosion resistance and mechanical stability of offshore power generation equipment, and significantly reduces the need for frequent manual maintenance of offshore power generation due to continuous and automatic lubrication, significantly improves the maintainability and operating economy of the equipment in summer.

The invention provides a Mn-Fe-Ni-Si-Cu-based negative thermal expansion material as well as a preparation method and application thereof, and belongs to the technical field of negative thermal expansion materials. The negative thermal expansion temperature range of the Mn-Fe-Ni-Si-Cu-based negative thermal expansion material provided by the invention covers the high-temperature and low-temperature ranges (120K-896K), and the high-temperature and wide-temperature-range negative thermal expansion effect is shown; good mechanical properties are achieved; the material has extremely high thermal and mechanical stability, and has important significance for developing high-temperature precision mechanical devices based on zero expansion. The Mn-Fe-Ni-Si-Cu-based negative thermal expansion material disclosed by the invention is low in raw material cost and simple in preparation method.

The invention discloses a proton solid oxide and a preparation method and application thereof, and the proton solid oxide comprises a trigonal system ABO3 type La < 0.9 > Ba < 0.1 > Co < 0.7 > Ni < 0.2 > Ag < 0.1 > O < 3-delta >, a Ruddlesden-Popper type La < 0.9 > Ba < 0.1 > Co < 0.7 > Ni < 0.2 > Ag < 0.1 > O < 3-delta > and Ag nanoparticles. The proton solid oxide provided by the invention realizes a multi-phase coexistence structure, thermogravimetric analysis shows that the proton solid oxide meets the requirements of high catalytic activity and ion / electron transfer capability, and the structure not only improves the catalytic activity of the material, but also enhances the mechanical stability and thermal expansion resistance of the material, so that the proton solid oxide can be used for preparing a composite material. And the problems of unstable catalytic activity and high-temperature structure degradation caused by additional introduction of Ni-containing substances are avoided.

The utility model discloses a high-strength tear-resistant composite aluminum foil paperboard, and belongs to the technical field of packaging materials, the high-strength tear-resistant composite aluminum foil paperboard comprises a composite aluminum foil paperboard main body, the composite aluminum foil paperboard main body comprises a base material layer, the base material layer adopts high-quality kraft paper as a raw material, and a stretch-resistant net is arranged on the upper surface of the base material layer; the high-quality kraft paper is selected as the raw material of the base material layer, good printing applicability and low cost can be guaranteed, the stretch-resistant net is arranged between the base material layer and the aluminum foil layer, and the base material layer, the aluminum foil layer and the stretch-resistant net are fixedly bonded together through the adhesive layer to form a whole. The tensile net formed by weaving the vertical cellulose filaments and the transverse cellulose filaments in a staggered mode has excellent mechanical performance due to the strong interaction force between molecules, so that the tearing strength and the overall mechanical stability of the composite aluminum foil paperboard main body can be greatly improved, the composite aluminum foil paperboard main body can bear large external force such as stretching, compression and bending, and the service life of the composite aluminum foil paperboard main body is prolonged. And firmness and durability are realized.

The invention belongs to the field of new materials, and particularly relates to a super-hydrophobic composite coating with mechanical firmness, self-cleaning property and high wear resistance, a method and application thereof. According to the preparation method, epoxy resin (E51) is adopted as a binder, quartz sand, modified F-TiO nano particles and SiO nano particles are combined, and the quartz sand / F-TiO / SiO coated EP super-hydrophobic composite coating of a double-layer structure is prepared through a simple and convenient blade coating-spraying process. According to the coating, through multi-scale hierarchical structure design and low surface energy modification, a static water contact angle of 151 degrees and 1t are achieved; the rolling angle of 5 degrees shows excellent self-cleaning performance on liquid and solid pollutants. A mechanical stability test shows that in a Taber abrasion test, the coating still keeps good hydrophobicity after being abraded for 3000 cycles under the load of 250 g and abraded for 600 cycles under the load of 750 g; after 500 times of adhesive tape stripping experiments, the static water contact angle is still greater than 120 degrees, the rolling angle is as low as 5 degrees, and excellent wear resistance and substrate adhesion are shown.

This invention relates to the field of engine exhaust gas recirculation (EGR) technology, and discloses a heating and vaporization device and method for engine EGR condensate. The device includes a compressor with an inlet and an outlet on its outer side. An intercooler is fixedly connected to the outlet end away from the compressor. A pipe assembly is located in the middle of the intercooler, and an engine cylinder, a turbine, and a three-way catalytic converter are connected in series via the pipe assembly. An exhaust port is located on the outer side of the three-way catalytic converter. This invention heats the liquid water that precipitates and flows into the intercooler, causing it to undergo a complete phase change and convert into water vapor. The water vapor then enters the engine cylinder along with the gas mixture, blocking the path of liquid water intruding into the engine cylinder, avoiding the risk of misfire caused by liquid water, and improving the mechanical stability of engine operation.

The utility model relates to the technical field of semiconductor packaging, and discloses a plug-in type optocoupler lead frame, which comprises a PT lead frame and an IP lead frame, the PT lead frame comprises a first lead frame body, a plurality of first lead frame groups are arranged on the first lead frame body, the IP lead frame comprises a second lead frame body, and a plurality of second lead frame groups are arranged on the second lead frame body. A plurality of second lead frame sets are arranged on the second lead frame body, the PT lead frame and the IP lead frame are connected in a matched mode through the inserting parts, the uniqueness of the inserting direction is ensured through the width difference design of the inserting grooves and the inserting holes, assembly errors are avoided, and the assembly efficiency and reliability are improved. And the multi-point insertion part provides a certain elastic space and can disperse stress, so that the mechanical stability and the anti-seismic property of the frame are improved, and the overall connection firmness is enhanced.

This invention proposes a multilayer circuit structure and its fabrication method. The multilayer circuit structure includes a substrate and integrated circuits disposed on both sides of the substrate. Each integrated circuit includes a flexible insulating layer and two flexible conductive layers disposed on both sides of the flexible insulating layer. Each flexible conductive layer has a rough surface and a smooth surface, with each rough surface in contact with the flexible insulating layer. One side of the flexible conductive layer has a rough surface that contacts the flexible insulating layer, significantly increasing the contact area and improving the adhesion between the flexible conductive layer and the flexible insulating layer. This design helps reduce the risk of delamination and peeling, enhances the mechanical stability of the circuit structure, and maintains stable performance, especially when subjected to thermal cycling and mechanical stress during manufacturing. The multilayer circuit structure uses a material with a certain degree of flexibility, enabling it to withstand stress from mechanical operations during manufacturing. The combination of these two factors improves the manufacturing yield of the multilayer circuit structure.

This invention provides a microbridge structure and its fabrication method, as well as an uncooled infrared microbolometer, belonging to the fields of microelectromechanical systems (MEMS) and infrared detection technology. The microbridge structure includes two diagonally arranged anchor posts, two supporting legs, a bridge deck, and an umbrella-shaped canopy. Each supporting leg consists of multiple alternating longitudinal segments and multiple transverse segments connected end-to-end. The longitudinal segments extend at an angle greater than 45 degrees relative to the horizontal plane, while the transverse segments extend parallel to the horizontal plane. One end of each supporting leg is connected to an anchor post, and the other end is connected to the end of the bridge deck, suspending the bridge deck. This design maintains the slender characteristics of the supporting legs to ensure low thermal conductivity and high thermal insulation performance, while significantly reducing the residual stress on the supporting legs by utilizing the high cross-sectional moment of inertia of the longitudinal segments. This improves the mechanical stability and deformation resistance of the microbridge structure, solving the problem of balancing stability and thermal performance in traditional horizontal supporting leg structures. This invention also provides a corresponding fabrication method.

The invention relates to a preparation method of cross-linked polyester microspheres, the cross-linked polyester microspheres and application of the cross-linked polyester microspheres, and belongs to the technical field of biomedical materials. According to the preparation method of the cross-linked polyester microspheres provided by the invention, other macromolecular polyester materials do not need to be introduced for blending or a prepolymer is not required to be modified to improve the molding stability of the microspheres, and the prepared cross-linked polyester microspheres are excellent in shape retention capability and mechanical stability, relatively low in inflammatory response in a biological experiment, relatively good in tissue collagen generation and relatively good in biocompatibility. The material is suitable for soft tissue filling materials.