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916results about How to "Guaranteed durability" patented technology

Concrete pouring homogeneity detection system and method based on sensing data

The invention relates to the technical field of concrete pouring, in particular to a concrete pouring homogeneity detection system and method based on sensing data, and aims at achieving efficient and accurate concrete pouring homogeneity evaluation and defect detection. The system comprises a multi-sensor sensing module, a multi-sensor data conversion and transmission module and a concrete homogeneity evaluation module, the multi-sensor sensing module comprises a temperature sensor, an ultrasonic sensor and a vibration sensor; the multi-sensing data conversion and transmission module is used for acquiring multi-sensing data and performing data type conversion and transmission on the multi-sensing data; and the concrete homogeneity evaluation module is used for constructing a concrete pouring homogeneity evaluation model to detect and evaluate the homogeneity and defects in the concrete pouring process. According to the invention, detection and evaluation of the concrete pouring homogeneity are realized through combination of multi-sensing data, and the accuracy of detection of the concrete pouring homogeneity is improved.
Owner:SHAOXING KEQIAO SHANFENG BUILDING MATERIALS CO LTD

Vehicle speed adjusting method fusing road surface evenness and wheel data and related equipment

The invention provides a vehicle speed adjusting method fusing road surface evenness and wheel data and related equipment, and relates to the field of intelligent control. The method comprises the following steps: acquiring a pavement image and point cloud data through monitoring equipment, determining pavement concave-convex height information and state parameters by combining the pavement image and the point cloud data, and inputting the pavement concave-convex height information and the state parameters into a pre-trained flatness evaluation model to obtain a pavement flatness grade. And when the road surface is in the uneven range, acquiring wheel data of the target vehicle, and inputting the road surface flatness grade and the wheel data into the jolting influence evaluation model to obtain jolting data. The vehicle bumping influence level is determined by combining vehicle-mounted sensor data, and then the standard vehicle speed value is determined, so that the current vehicle speed of the target vehicle is controlled, the vehicle speed is accurately adjusted according to the road surface and vehicle conditions, and the driving safety and comfort are improved.
Owner:北京路凯智行科技有限公司

Lifting, transferring and mixing device for coarse aggregate ultra-high performance concrete premix

The coarse aggregate ultra-high performance concrete premix lifting, transferring and mixing device comprises a control system, an aggregate batching system, an aggregate lifting system, a dry mixing main machine system, a feeding vehicle, a steel fiber feeding system and a stirring system, the whole stirring process is automatically controlled and comprises key steps of automatic metering, automatic raw material feeding, mixing and the like, so that manual operation is remarkably reduced, errors and inconsistency caused by manual metering are avoided, and the accuracy and repeatability of stirring each time are ensured; step-by-step feeding of each part is coordinated through a control system, so that the stirring efficiency and the uniformity of concrete are improved; by establishing a relational expression between a concrete mixture stirring uniformity index and parameters such as the stirring time, the stirring speed, the number of stirring blades, the vibration frequency of the two-stage vibrating screen and the like, key parameters in the stirring process are more accurately controlled, and it is ensured that the stirring uniformity of each batch of concrete reaches a preset standard.
Owner:THE FIRST ENGINEERING COMPANY OF CCCC FOURTH HARBOUR ENGINEERING CO LTD +1

Connecting device for deformation joint at civil engineering structural plate and using method of connecting device

The invention relates to the technical field of civil engineering structure plate deformation joint connection, and discloses a civil engineering structure plate deformation joint connecting device and a using method thereof.The civil engineering structure plate deformation joint connecting device comprises at least two adjacent concrete plates, and a deformation joint is arranged between the concrete plates; the elastic rubber belt is arranged in the deformation joint, and the elastic rubber belt is arranged in the length direction of the deformation joint and used for connecting the adjacent concrete slabs and providing telescopic connection to adapt to thermal expansion and cold contraction or other deformation of the concrete slabs; the supporting structures are located on the two sides of the elastic rubber belt, and each supporting structure comprises a first supporting plate and a second supporting plate. The elastic rubber belts are arranged in the length direction of the deformation joint, flexible connection can be provided between the concrete slabs, thermal expansion and cold contraction or other displacement deformation of the concrete slabs caused by temperature changes and foundation settlement are effectively absorbed through the design, and therefore the situation that the concrete slabs crack or are unstable in structure is avoided.
Owner:POWERCHINA JIANGXI ELECTRIC POWER ENGINEERING CO LTD

Subway shield tunnel segment external pressure control system based on automatic monitoring

The invention relates to the technical field of data processing, in particular to a subway shield tunnel segment external pressure control system based on automatic monitoring, and the system comprises a setting module which is used for setting a pressure sensor, a position sensor and a strain sensor on a segment by precisely recognizing the structure of the segment; the data acquisition module acquires sensor data in real time based on a preset frequency; the pressure analysis module draws a pressure change diagram and judges that the pressure of the duct piece is abnormal, or adjusts the preset frequency; the deformation analysis module receives the deformation analysis instruction, determines the deformation degree of the duct piece based on a radial deformation degree determined based on a plurality of real-time positions and an annular strain degree determined based on a plurality of real-time resistance values, and adjusts a water pressure threshold value according to a comparison result of the deformation degree and a preset deformation degree to generate a drainage instruction; the drainage module receives a drainage instruction and determines the opening number and distribution of water diversion ports based on adjustment of a preset water pressure threshold value and the segment deformation degree. The safety of the metro shield tunnel segment structure is guaranteed.
Owner:HANGZHOU METRO OPERATION CO LTD

Lead-free rubber with ionizing radiation shielding performance and preparation method thereof

The invention relates to the field of shielding materials, and provides lead-free rubber with ionizing radiation shielding performance and a preparation method thereof, and the lead-free rubber is mainly prepared from barium titanate / boron nitride composite filler, barium tungstate / boron carbide composite filler, tungsten powder, bismuth powder, a rubber matrix and an auxiliary agent according to a proportion. The barium titanate particles are uniformly loaded on the surface of the flaky boron nitride, so that the gamma ray and X ray shielding performance is improved, and meanwhile, the boron nitride provides excellent neutron shielding capability; barium tungstate particles are loaded on the surfaces of the boron carbide nanowires to form a multi-scale shielding network, and the shielding effect of neutrons and ionizing radiation is remarkably enhanced. The rubber matrix endows the material with excellent flexibility and mechanical properties. By scientifically optimizing the component proportion and the preparation process, the problems that a traditional high-density shielding material is prone to agglomeration, poor in flexibility and the like are solved, and the material shows excellent performance in the fields of gamma ray, X ray and neutron shielding and is suitable for the fields of nuclear energy, medical protection, industrial radiation protection and the like.
Owner:HEFEI AIJIA RADIATION PROTECTION TECH CO LTD

Seabed multifunctional freely-adjustable crawler belt

The invention belongs to ocean engineering, and discloses a seabed multifunctional freely-adjustable crawler belt which comprises a main frame, at least one pair of telescopic oil cylinders, at least one pair of outer supporting legs, at least one pair of inner supporting legs, at least one connecting rod, at least one overturning oil cylinder and at least one overturning oil cylinder connecting weldment. Wherein the main frame is hinged with the telescopic oil cylinder, the outer supporting leg and the inner supporting leg through pin shafts; the connecting rod is provided with at least three reamed holes which are respectively connected with the crawler belt assembly, the outer supporting leg and the inner supporting leg through bolts; the overturning oil cylinder is mounted on the crawler beam through the overturning oil cylinder connecting weldment and is connected with the connecting rod through the bolt; according to the invention, flexible adjustment of the crawler belt in multiple directions is realized. Particularly, due to the synergistic effect of the telescopic oil cylinder and the overturning oil cylinder, the width and height of the crawler belt can be adjusted under different terrain conditions, obstacles can be overcome through the rotating action, meanwhile, the equipment can better adapt to the complex and changeable seabed environment, and the operation efficiency and safety are improved.
Owner:DEEP SEA HOMO SAPIENS (GUANGZHOU) TECH CO LTD

Assembly type prefabricated part connecting structure and construction method

The invention relates to the technical field of building construction, in particular to an assembly type prefabricated part connecting structure and a construction method.The assembly type prefabricated part connecting structure comprises a first wing plate and a second wing plate, the first wing plate and the second wing plate are installed at the two ends of a prefabricated wall correspondingly, an assembly groove is formed in the surface of the first wing plate, and an assembly plate is integrally formed on the surface of the second wing plate; when the two edge grooves provided with the first wing plates and the second wing plates are spliced, the splicing plates are inserted into the splicing grooves, mounting grooves are formed in the upper ends and the lower ends of the splicing plates, inserting handles are inserted into the two sides of the mounting grooves, and the ends, away from the mounting grooves, of the inserting handles are inserted into the surfaces of the splicing grooves. The fabricated prefabricated part connecting structure and the construction method have the beneficial effects that through splicing of the first wing plates and the second wing plates and cooperation of the splicing plates and the splicing grooves, firm connection between prefabricated wall bodies is achieved. And meanwhile, due to the pre-fixing design of the insertion handle and the positioning groove, the connection stability is further enhanced, and the problems of dislocation and looseness in the wall splicing process are effectively avoided.
Owner:HENAN PROVINCE CONSTR GRP CO LTD

Weakening-free polyurethane composite material as well as preparation method and application thereof

The invention relates to a weakening-free polyurethane composite material as well as a preparation method and application thereof. The weakening-free polyurethane composite material comprises a polyurethane surface layer, a polyurethane high-solid bonding layer and a base cloth layer which are sequentially arranged from top to bottom, wherein the polyurethane high-solid bonding layer is prepared from a polyurethane high-solid bonding layer slurry, and the polyurethane high-solid bonding layer slurry is prepared from the following components in parts by mass: 100 parts of a reactive polyurethane prepolymer, 5 to 10 parts of a cross-linking agent, 20 to 50 parts of a filler and 5 to 10 parts of color paste. According to the polyurethane high-solid bonding layer disclosed by the invention, the reaction type polyurethane prepolymer, the cross-linking agent and the filler react according to a certain proportion to form a three-dimensional network cross-linked structure, so that a leather film has certain strength and brittleness, and the weakening-free polyurethane composite material can generate overall brittle fracture under the impact of ignition force; and safe unfolding of the air bag is ensured.
Owner:ANHUI ANLI MATERIAL TECH

Modified fly ash-based mining filling material as well as preparation method and application thereof

ActiveCN119191807AGood dispersionImprove filling capacitySolid waste managementEpoxyOrganic acid
The invention relates to a modified fly ash-based mining filling material and a preparation method thereof. The material comprises the following components: modified fly ash, lime, cement, gypsum, sodium sulfate, epoxy resin and the like. By using a composite modification system of the nitrogen-containing silane coupling agent, triethanolamine and organic acid, the dispersity of the fly ash is improved, and the fly ash is uniformly distributed in the slurry; lime, gypsum and sodium sulfate are used as excitants, so that the filling material keeps good strength and stability at high temperature, and the risk of structural damage caused by temperature rise is avoided; and meanwhile, the material cannot be excessively embrittled or the strength of the material is not reduced in a low-temperature environment. Besides, due to the excellent bonding performance of the added epoxy resin, the fly ash, the cement and other materials can be effectively glued into a filling body with certain strength and stability, the epoxy resin is also beneficial to reducing the internal stress and deformation of the cured materials, and the long-term stability of the filling body is ensured. The filling material disclosed by the invention is particularly suitable for mine filling and supporting operation, and can provide a reliable filling effect under an extreme temperature condition.
Owner:XUCHEN MINING TECH DEV (XUZHOU) CO LTD

Preparation method of acid and alkali resistant metallic yarn

The invention provides an acid and alkali resistant metallic yarn preparation method, which comprises: 1, mixing polyvinylidene fluoride, polyvinylpyrrolidone and a solvent, and carrying out electrostatic spinning to form a PVDF / PVP composite fiber membrane; soaking the PVDF / PVP composite fiber membrane in an aqueous solution, taking out the PVDF / PVP composite fiber membrane after soaking, cleaning and drying to obtain a PVDF fiber membrane with a groove structure; step 2, soaking the PVDF fiber membrane with the groove structure in slurry containing flaky aluminum powder, a cross-linking agent and polyacrylate emulsion, and after soaking is completed, sequentially carrying out rolling and high-temperature drying to obtain a PVDF fiber membrane with an aluminum coating; 3, the PVDF fiber membrane with the aluminum coating is cut into filaments, then a polyester yarn coating layer and a protective coating are sequentially formed on the surface of the PVDF fiber membrane cut into the filaments, and the acid and alkali resistant metallic yarn is obtained. According to the method, the binding strength of the aluminum coating and the fiber membrane is improved, full coating of the aluminum wires is achieved, and the acid and alkali resistance of the metallic yarn fabric in the subsequent dyeing and finishing process is remarkably improved.
Owner:HANGZHOU VOCATIONAL & TECHN COLLEGE

Self-powered friction structure and insole

The utility model discloses a self-powered friction structure and an insole. The self-powered friction structure comprises a negative electrode structure which comprises a first negative electrode material layer, a conductive fabric layer and a second negative electrode material layer which are connected in sequence, and the conductive fabric layer is located between the first negative electrode material layer and the second negative electrode material layer; the positive electrode structure comprises a positive electrode material layer and a base layer which are connected with each other; the plurality of elastic columns are uniformly distributed and are connected with the second negative electrode material layer and the positive electrode material layer to form a hollow structure; the first negative electrode material layer and the second negative electrode material layer adopt an electric polarity material different from that of the positive electrode material layer; the negative electrode structure, the elastic column and the positive electrode structure are integrally formed. According to the self-powered friction structure and the insole, the self-powered friction structure is integrally formed, has the advantages of being high in durability and stable in voltage output, can be conveniently cut at will, and meets the requirement for large-scale production.
Owner:ANTA (CHINA) CO LTD

Perovskite-based thin film laminated solar cell and preparation method thereof

The invention discloses a preparation method of a perovskite-based thin film laminated solar cell, and the method comprises the following steps: S1, taking transparent conductive glass as a substrate, and carrying out the spin coating of an electron transmission material on the substrate to form an electron transmission layer; s2, a perovskite precursor solution prepared in advance is spin-coated, and a perovskite absorption layer is obtained after primary heat treatment; s3, depositing a nano silicon dioxide porous interface layer, spin-coating a self-repairing polymer containing ionic liquid, and performing secondary heat treatment to obtain a modified perovskite absorption layer; s4, spin-coating a hole transport layer; s5, performing vacuum evaporation on a metal counter electrode layer to obtain a perovskite top cell; and S6, stacking and compounding the perovskite-based thin film and a crystal silicon bottom cell to form the perovskite-based thin film laminated solar cell. According to the preparation method of the perovskite-based thin film laminated solar cell, the photoelectric conversion efficiency and the stability of the cell are improved, the self-repairing capability and the long-term durability of the cell are enhanced, and the high-standard requirement of commercial application can be met.
Owner:NINGBO OSDA SOLAR CO LTD

Data storage method and device of solid-state storage device and storage medium

The embodiment of the invention provides a data storage method and device for a solid-state storage device and a storage medium, and the method comprises the steps: obtaining a target task and a target task type of the target task; under the condition that the target task type is the first task type, executing a first classification operation on the target task by using a pre-trained first target classification network to obtain a first classification label; executing a second classification operation on the storage layers in the target data block by using a pre-trained second target classification network to obtain categories of a plurality of storage layers in the target data block; and determining a target storage layer matched with the first classification label based on the plurality of categories of the plurality of storage layers, and storing the to-be-written data into the target storage layer. Through the method and the device, the problems of durability and data reliability of the solid-state storage device in related technologies are solved.
Owner:SHANDONG YUNHAI GUOCHUANG CLOUD COMPUTING EQUIP IND INNOVATION CENT CO LTD

Flexible photovoltaic panel support and installation method thereof

The invention provides a flexible photovoltaic panel support and an installation method thereof, the flexible photovoltaic panel support comprises middle rods, a main cable, two end rods as a group and are located at the tail end of the main cable, and a plurality of middle rods are arranged and are distributed between the end rods at the two ends to support the main cable. A main roller and a power roller are arranged at the top of the end rod, the main roller is used for bearing a main cable, and the power roller is used for bearing a power cable; a detachable clamping sliding piece is installed on the power cable, the clamping sliding piece is installed on the photovoltaic panel support and clamped on the power cable through a locking piece, and the clamping sliding piece further abuts against the main cable in a sliding mode. The photovoltaic panel is pulled to move on the main cable through the power cable, and long-distance transportation of the photovoltaic panel is achieved. The middle rod drives the photovoltaic panel on the main cable to be adjusted in the horizontal direction and the vertical direction by arranging the elevation angle driver and the azimuth angle driver, it is ensured that the photovoltaic panel faces the sun, and the illumination receiving efficiency is optimized.
Owner:POWER CHINA KUNMING ENG CORP LTD

PP resin foaming optical diffusion plate and preparation method thereof

The invention discloses a PP resin foaming optical diffusion plate and a preparation method thereof.The diffusion plate comprises an upper layer, a middle layer and a lower layer, the upper layer and the lower layer are located on the two sides of the middle layer, the thickness ratio of the upper layer to the middle layer to the lower layer is 1: (7-9): 1, and the upper layer and the lower layer are the same in composition; the upper layer is prepared from the following components in parts by mass: PP resin, PP-g-MAH resin, copolymer microspheres, a flame retardant, an antioxidant, mineral oil, a light stabilizer, an ultraviolet light absorber and a whitening agent; the middle layer is prepared from the following components in parts by mass: GPPS resin, a foaming agent, an antioxidant, mineral oil, a light stabilizer, an ultraviolet light absorber and a whitening agent, and the diffusion plate is stable in overall structure, good in optical performance and low in manufacturing cost.
Owner:REGENCY OPTICS ELECTRON CORP

Nickel-carbon conductive shielding foam

The invention provides nickel-carbon conductive shielding foam. The nickel-carbon conductive shielding foam sequentially comprises a conductive layer, foam, a bonding layer and an isolating layer from top to bottom, the foam comprises 25 to 40 parts of nickel-carbon nanotube-cerium oxide composite powder, 1 to 5 parts of an ionic liquid dispersant, 10 to 25 parts of organic silicone oil, 20 to 40 parts of silicone rubber, 5 to 10 parts of polyfuran, 5 to 10 parts of maleimide, 0.5 to 3 parts of a silane coupling agent, 0.01 to 0.1 part of a platinum catalyst and 0.2 to 1.5 parts of a cross-linking agent. The conductive foam can effectively restrain high-frequency electromagnetic interference generated in modern electronic equipment and ensure normal work of the equipment. A self-repairing system is constructed by adding polyfuran and maleimide. When the foam generates cracks under the action of mechanical stress or thermal cycle in the using process, the self-repairing material can automatically repair a conductive network through a reverse Diels-Alder reaction, and the shielding performance and the conductivity of the material are recovered.
Owner:SUZHOU WANHE ELECTRONICS CO LTD

High-strength and high-toughness hot in-place recycling asphalt mixture as well as preparation method and application thereof

The invention discloses a preparation method of a high-strength and high-toughness hot in-place recycling asphalt mixture, which comprises the following steps: A, detecting an asphalt recycled material to obtain a detection result; b, according to the detection result, the gradation of the hot in-place recycling asphalt mixture and the gradation of the mineral aggregate, determining the use amounts of the high-viscosity and high-elasticity modified asphalt, the asphalt recycled material and the new mineral aggregate; c, respectively preheating the high-viscosity and high-elasticity modified asphalt, the asphalt reclaimed material and the new mineral aggregate; d, mixing the new mineral aggregate with a part of high-viscosity and high-elasticity modified asphalt to obtain an oil-rich large-particle-size asphalt mixture; and E, mixing the asphalt recycled material, sequentially adding the oil-rich large-particle-size asphalt mixture and the residual amount of high-viscosity and high-elasticity modified asphalt, and mixing to obtain the high-strength and high-toughness hot in-place recycling asphalt mixture. The preparation method of the high-strength and high-toughness hot in-place recycling asphalt mixture provided by the invention effectively solves the technical problems of poor pavement performance and durability of a recycled asphalt pavement prepared from the hot in-place recycling asphalt mixture in the prior art.
Owner:CENT FORTUNE CREATION TECH GRP CO LTD

Preparation method of nickel-carbon conductive shielding foam

The invention provides a preparation method of nickel-carbon conductive shielding foam, which comprises the following steps: S1, mixing carbon nanotubes and cerium oxide in proportion, and adding nano nickel powder to form a suspension; adding a reducing agent to carry out reduction reaction so as to deposit nickel ions on the surfaces of the carbon nanotubes and the cerium oxide particles; s2, mixing the nickel-carbon nanotube-cerium oxide composite powder with an ionic liquid dispersant, mixing organic silicone oil and silicone rubber to serve as a matrix, then adding polyfuran and maleimide, and adding a silane coupling agent to be fully combined; adding the dispersed composite powder into an organic silicon matrix, continuously stirring until the materials are uniformly mixed, then adding a platinum catalyst and a cross-linking agent, pouring the mixture into a mold, and curing to form foam; s3, pasting a conductive layer; S4, setting a bonding layer; and S5, setting an isolation layer. By adopting the nickel-carbon nanotube-cerium oxide composite material, the electromagnetic shielding performance of the foam is greatly improved. The ultra-thin self-repairing function is also realized.
Owner:SUZHOU WANHE ELECTRONICS CO LTD

Crosslinking curing environment-friendly polyurethane waterproof coating and preparation method thereof

The invention provides a cross-linking and curing environment-friendly polyurethane waterproof coating and a preparation method thereof, and the cross-linking and curing environment-friendly polyurethane waterproof coating comprises the following raw materials by weight: 15-30 parts of a polyhydroxy compound; 6 to 15 parts of pentaerythritol polyether; 1-5 parts of an anionic surfactant; 1 to 5 parts of nano silicon dioxide aerogel; 1-8 parts of wollastonite powder; 25 to 45 parts of fly ash floating beads; 10 to 25 parts of diisocyanate; 0.5 to 3 parts of chlorinated paraffin; and 0.5 to 3 parts of N, N-dimethyl-2-hydroxyethylamine. The cross-linking curing environment-friendly polyurethane waterproof coating provided by the invention solves the environment-friendly problem of the traditional polyurethane waterproof coating, realizes solvent-free curing, meets the environment-friendly requirement, improves the comprehensive properties such as elasticity and durability of a coating film, and provides a safer and more effective solution for waterproof construction.
Owner:BEIJING BUILDING MATERIAL INSPECTION RES INST CO LT

Automobile charging pile

The invention discloses an automobile charging pile, and belongs to the field of automobile charging piles. An automobile charging pile comprises a charging pile body, a charging wire and a charging gun, one end of the charging wire is fixed in the charging pile body, the other end of the charging wire penetrates through the charging pile body and is fixedly connected with the charging gun, a containing groove is formed in the side wall of the charging pile body, and the end of the charging gun is inserted into the containing groove. The device further comprises a heat dissipation assembly and a cleaning mechanism. Air exhaust fan blades rotate in water flow in a cooling groove, a layer of water mist film is generated around the air exhaust fan blades, at the moment, airflow can penetrate through the layer of water mist film, washing of the airflow is achieved, the temperature of the airflow is effectively reduced, effective heat dissipation of the interior of the charging pile body is achieved, and the use safety of the charging pile body is improved; and dust carried in the airflow is intercepted, so that the neatness of the airflow is improved, abrasion and erosion of the dust to electrical elements in the charging pile body are reduced, and the protection effect is improved.
Owner:SUZHOU BEICHENTUO MACHINERY EQUIPMENT CO LTD

Pneumatic radial tire with low rolling resistance and high wet grip

The invention provides a low-rolling-resistance and high-wet-grabbing pneumatic radial tire, which belongs to the technical field of tires, and comprises a tread and a circumferential groove extending along the circumferential direction of the tread, the contour between the highest point of the tread and the end point of one side of the tread is sequentially divided into a first arc section, a second arc section, a third arc section and a fourth arc section, the radius TR1 of the first section of arc, the radius TR2 of the second section of arc, the radius TR3 of the third section of arc and the radius TR4 of the fourth section of arc meet the following relation: TR1: TR2: TR3: TR4 = 2.3: 1.9: 1.6: 1; the number of the circumferential grooves is five, the five circumferential grooves sequentially comprise a central water-drop-shaped pattern groove, two pattern grooves close to the center and two shoulder water-drop-shaped pattern grooves from the center to the two sides of the tread, and the central water-drop-shaped pattern groove and the shoulder water-drop-shaped pattern grooves are grooves which are self-closed in a loading state; according to the invention, the tire structure design, the pattern design and the formula design are optimized, so that the tire has the ultimate durability, low rolling resistance and full-life-cycle high-wet-grip performance at the same time.
Owner:GITI RADIAL TIRE (ANHUI) CO LTD

Ultraviolet-proof antibacterial fabric and preparation method thereof

The invention belongs to the technical field of textile fabrics, and particularly relates to an ultraviolet-proof antibacterial fabric and a preparation method thereof. The ultraviolet-proof antibacterial fabric comprises a base cloth layer and a modified polyester fabric layer, the modified polyester fabric is obtained by dipping a polyester fabric in a finishing liquid; the finishing liquid comprises a first finishing liquid and a second finishing liquid; the first finishing liquid is prepared from the following raw materials: a carboxymethyl chitosan derivative and polycarboxylic acid; the second finishing liquid is prepared by mixing nano titanium dioxide and absolute ethyl alcohol. According to the invention, the pre-treated polyester fabric is subjected to secondary surface modification by using the finishing liquid, and the durability of the fabric product is remarkably improved by using a covalent grafting mode.
Owner:SHENZHEN LEHUADE CLOTHING CO LTD

High-performance fiber-blended seawater and sea sand concrete and preparation method thereof

The invention discloses high-performance fiber-blended seawater and sea sand concrete and a preparation method thereof. The high-performance fiber-blended seawater and sea sand concrete is prepared from the following raw materials: cement, fly ash, silica fume, coarse aggregate, sea sand, seawater, a water reducing agent, polyvinyl alcohol fibers and basalt fibers. Polyvinyl alcohol fibers, basalt fibers and a high-quality mineral admixture are mixed and doped in a seawater and sea sand concrete matrix, a three-dimensional framework is formed in the interior macroscopically, aggregate is effectively wrapped, internal defects of the concrete are reduced, the mechanical property is improved, the bridging effect of the mixed fibers is exerted microscopically, and the anti-cracking performance of the concrete is improved. And silica fume, fly ash and Ca (OH) 2 are subjected to a pozzolanic effect to generate low-alkalinity calcium silicate hydrate gel with high strength and excellent stability, so that the ion curing capacity of the seawater and sea sand concrete is improved, and the compactness and durability of a concrete matrix are improved. The fibers and the mineral admixture have a synergistic effect, so that the internal microstructure and durability of the concrete are enhanced, and the concrete can better adapt to low-temperature, freeze-thaw, corrosion and other complex environments.
Owner:HEBEI UNIV OF SCI & TECH

Net hanging device for concrete spraying

The utility model relates to a net hanging device for concrete spraying, and relates to the technical field of building construction, the net hanging device for concrete spraying comprises a steel bar net piece and a connecting piece, the connecting piece is used for being fixed to a structure to be subjected to concrete spraying, and the steel bar net piece is hung on the connecting piece; the connecting structure further comprises a pressing piece, and the pressing piece is pressed on the reinforcing mesh and fixedly connected with the connecting piece. Through the design of the connecting pieces and the pressing pieces, the reinforcing mesh is fixed to the structure, the concrete rebound phenomenon can be effectively reduced, and the construction quality and efficiency in the concrete spraying process are ensured; due to the design of the pressing piece, the reinforcing mesh can be evenly and stably pressed on a structure, the reinforcing mesh is prevented from tilting or bending in the spraying process, and therefore the stability and durability of the mesh hanging device are guaranteed; the construction process is simple and clear, operation is convenient and fast, the net hanging device can be rapidly used, the construction period is shortened, the site guidance difficulty is reduced, and economic benefits are improved while the construction quality is guaranteed.
Owner:CHINA RAILWAY NO 3 GRP CO LTD +1

Modified zirconium phosphate / resin composite material and preparation method thereof, and method for recovering nuclide in nuclear waste liquid

The invention relates to the technical field of adsorption materials, in particular to a modified zirconium phosphate / resin composite material, a preparation method thereof and a method for recycling nuclides in nuclear waste liquid. The modified zirconium phosphate / resin composite material comprises modified zirconium phosphate and a resin material in a mass ratio of 1: (0.05-0.2), the modified zirconium phosphate is zirconium phosphate containing doped metal ions, and the doped metal ions comprise one or more of Cu < 2 + >, Fe < 3 + >, Zn < 2 + >, Co < 2 + > and Ni < 2 + >. The modified zirconium phosphate / resin composite material provided by the invention has excellent selectivity on nuclides, so that the modified zirconium phosphate / resin composite material has excellent adsorption and recovery performance and good desorption and regeneration performance.
Owner:JIANGSU HELPER FUNCTIONAL MATERIALS

Electromagnetic heating plane sensor system for removing thick coating on deck

The invention discloses an electromagnetic heating plane inductor system for removing thick paint on a deck, and particularly relates to the field of electromagnetic heating and surface treatment.The electromagnetic heating plane inductor system comprises a high-frequency resonant capacitor, a high-frequency transformer, an induction coil, a front-end induction head and a power output device, a coating is evenly heated through a high-frequency electromagnetic field, and the coating is softened and stripped; the system realizes maximum power factor control through a resonance circuit, and optimizes distribution of an electromagnetic field and a temperature field in combination with finite element analysis software so as to ensure accurate control of a heating effect; and the front-end sensing head is provided with a movement and position adjusting mechanism and can meet the heating requirements of different areas, so that a coating on the surface of a complex structure is effectively removed, and the heating uniformity and the removal efficiency are improved.
Owner:WUXI YOUCI ENVIRONMENTAL PROTECTION TECH CO LTD

Door hinge assembly and clothes processing equipment

The utility model relates to the technical field of household appliances, and discloses a door hinge assembly and clothes processing equipment, the door hinge assembly comprises a hinge, a base part, a cantilever part connected with the base part, and rotating shaft parts arranged on the two sides of the cantilever part; grooves are formed in the base part and the cantilever part; and the wiring harness guide piece is provided with a wiring channel for a wiring harness to penetrate through, and the wiring harness guide piece is embedded in the groove and is clamped and fixed with the hinge. According to the door hinge assembly, the wire harness guide piece is arranged in the groove of the hinge and is fixedly connected with the hinge in the clamping mode, screws are not needed for fixing, the connecting mode of the wire harness guide piece and the door hinge is simplified, the assembling steps and cost are reduced, and meanwhile the firmness and durability of connection are guaranteed.
Owner:QINGDAO HAIER DRUM WASHING MACHINE CO LTD

Permanent and temporary combined assembly type underground structure plate wall connecting joint

The utility model discloses a permanent and temporary combined assembly type underground structure plate wall connecting node which comprises an assembly type underground diaphragm wall, a full-length steel plate is installed on the side wall of the assembly type underground diaphragm wall, and a prefabricated structure plate is hoisted on the full-length steel plate. The gap between the prefabricated structural slab and the fabricated underground diaphragm wall is filled with ultra-high-performance concrete, and a steel bar structure is arranged in the ultra-high-performance concrete. According to the utility model, the rigid connection between the two prefabricated parts is realized, the integrity of the structure is improved, and the safety and durability of the underground structure are fully ensured; an underground diaphragm wall which is usually used as a temporary structure is changed into a permanent structure, so that the construction period is shortened, and the investment is saved; the ultra-high performance concrete poured in the joint can greatly shorten the anchoring length of the steel bars, enlarge the arrangement distance of the steel bars, obviously reduce the using amount of the steel bars on site and the binding workload, is convenient to install and simple in process, obviously improves the construction efficiency, and has high popularization and application value.
Owner:CHINA RAILWAY DESIGN GRP CO LTD