26results about How to "Strong designability" patented technology

The utility model discloses a kind of metal composite material walkway plates, comprising: footpath cantilever support, footpath cantilever support is spacedly arranged multiple along the length direction of prefabricated beam, the fixed end of multiple footpath cantilever support is fixedly connected with prefabricated beam;Steel grating frame, steel grating frame is multiple, the length direction of each steel grating frame Two ends are respectively overlapped and fixed on adjacent two footpath cantilever supports;Continuous no-alkali glass fiber felt reinforced polyurethane rigid foam plate, polyurethane rigid foam plate is multiple, and it is flatly fixed on multiple steel grating frames;Guardrail, guardrail is fixed on the cantilever end of footpath cantilever support.The footpath step plate is combined use by steel grating frame and polyurethane rigid foam plate, can greatly improve the durability of footpath step plate, and has the advantages of light weight, high strength.

The utility model belongs to pipeline damping and noise reduction equipment technical field discloses damping and noise reduction device and pipeline system. The damping and noise reduction device includes damping structure and mass structure, a plurality of damping structures are parallel and interval setting, are provided with a mass structure between any two damping structures, are provided with microperforated array structure on each mass structure, are provided with first containing hole on each damping structure, and multiple first containing holes are used for containing connected pipeline. This damping and noise reduction device can combine local area resonance band gap damping mechanism and microperforated plate sound absorption mechanism, and through integrated design, the mass structure is combined with microperforated structure, realizes low frequency control vibration and wide spectrum noise control. The damping and noise reduction device can adaptively increase or decrease the number of mass structure and damping structure to form a spring-mass multi-degree-of-freedom resonance system, realize vibration control of multiple resonance frequencies without significantly increasing the structure weight, and ensure the damping and noise reduction effect.

The invention belongs to the technical field of separation membrane preparation, and discloses a hollow fiber nanofiltration membrane for efficient interception of heavy metals and a preparation method of the hollow fiber nanofiltration membrane. The external pressure type hollow fiber nanofiltration membrane is high in flux, high in interception, high in selectivity, strong in pollution resistance and stable in structure, has the advantages of being excellent in heavy metal interception effect, stability, high in flux, good in pollution resistance and the like, and has wide application prospects in real scenes related to treatment of heavy metal wastewater such as industrial wastewater.

The application discloses a non-welding accessory connecting structure of a wind power tower drum, the wind power tower drum and a construction method thereof, and relates to the technical field of wind power generation equipment. Technical scheme points of the application are as follows: the application comprises a rooting piece for connecting with an accessory structure, a structural adhesive layer coated between a mounting surface of the rooting piece and an inner wall of a tower drum body, and a resin fiber composite material coating layer which is cured and formed to wrap a root part of the rooting piece and is fixedly connected with the inner wall of the tower drum body through the structural adhesive layer. The application can effectively disperse stress generated by accessory load, avoid a welding heat affected zone, welding residual stress and stress concentration at a welding toe, eliminate negative effects of welding of the accessory on fatigue strength of a main steel plate of the tower drum, and make the fatigue strength grade of the main steel plate not be reduced due to connecting details.

The utility model relates to rubber support technical field, concretely is a three -dimensional anisotropic shock attenuation rubber support, the utility model discloses a main body function layer and external protection layer, the external protection layer is covered in the outside of main body function layer, the main body function layer includes at least two corrugated stiffened sheets, and the rubber layer is arranged between two adjacent corrugated stiffened sheets, and the rubber layer and corrugated stiffened sheet staggered overlap, and the rubber layer is bonded together vulcanization between stiffened sheets, the external protection layer includes upper rubber protection layer, side rubber protection layer and lower rubber protection layer, and the periphery of rubber layer and corrugated stiffened sheet all and side rubber protection layer bond or vulcanization into a whole, the corrugated configuration form of support corrugated stiffened sheet that the utility model puts forward can make when support shearing deformation, and the effective shearing layer thickness of different directions can carry out different design, and the vertical deformation mode of support has changed, realizes longitudinal, lateral differentiating rigidity, yield force design, and realizes the vertical shock attenuation design.

This invention discloses a method and system for anisotropic patterning correction of wafer warpage, comprising: obtaining the target anisotropic curvature compensation value of the wafer to be corrected; calculating the target equivalent thin film stress value to be achieved by the stress balance layer based on the curvature compensation value, the mechanical parameters of the wafer substrate, and the preset thickness of the patterned stress balance layer; determining the geometric parameters of the patterned stress balance layer using a quantitative relationship model, based on the target equivalent thin film stress value, the intrinsic stress of the selected thin film material, and Poisson's ratio; and fabricating a corresponding patterned stress balance layer on the back side of the wafer to complete the warpage correction. By designing the patterned stress balance layer, the anisotropic control of the overall thin film stress state of the back stress layer can be achieved; curvature compensation, both in magnitude and direction, can be independently designed for warpage differences in different directions of the wafer, thereby adapting to and correcting various complex asymmetric warpage morphologies.

This invention relates to an intrinsically fluorescent polyester elastomer and its preparation method. The elastomer is copolymerized from vanillin-based aldehyde monomers with small-molecule cyano monomers and cyano-terminated polyethers or polyester diols via a Knoevenagel polycondensation reaction. By adjusting the molar fraction of the soft segment, a continuous transition from rigid fluorescent plastics to highly elastic fluorescent polyester elastomers can be achieved. The resulting material exhibits both high fluorescence quantum yield and high elongation at break, and can be applied in fields such as melt spinning, fluorescent anti-counterfeiting, and flexible optoelectronic devices.

The invention belongs to the technical field of deacidification of high-acid crude oil and distillate oil thereof, and particularly relates to application of a deep eutectic solvent in deacidification of crude oil and distillate oil thereof. The deep eutectic solvent provided by the invention comprises a hydrogen bond acceptor, a hydrogen bond donor and a cosolvent, the hydrogen bond acceptor comprises choline chloride and / or betaine, the hydrogen bond donor comprises one or more of p-ethylphenol, phenol, malic acid and maleic acid, and the cosolvent is water; the molar ratio of the hydrogen bond acceptor to the hydrogen bond donor is 1: (2-4). The deep eutectic solvent provided by the invention can efficiently remove naphthenic acid in crude oil and distillate oil, the deacidification rate can reach 90% or above, and the solvent can be recycled, is not easy to cause an emulsification phenomenon, and is environment-friendly. The method provided by the invention is simple to operate, convenient to use and suitable for deacidification treatment of high-acid crude oil and distillate oil thereof.

The application provides a synchronous forming method of a two-dimensional multi-layer fabric, comprising the following steps: obtaining a fabric type and physical parameters of a two-dimensional multi-layer fabric to be knitted; wherein the fabric type comprises a rectangular cross-section fabric and a rotary cross-section fabric; the physical parameters comprise a fabric layer number and a fabric length; performing grouping processing on a knitting machine based on the fabric layer number to obtain a standard knitting machine with n spool layers in each group; wherein the number of groups of the knitting machine is the same as the fabric layer number; n is a positive odd number greater than 1; installing yarns to the standard knitting machine according to a preset scheme; and knitting the yarns by using spools based on the fabric type to obtain the two-dimensional multi-layer fabric to be knitted. The scheme can improve the knitting efficiency of the multi-layer two-dimensional fabric, and can meet the needs of adjusting the knitting angle of the inner and outer layers of the fabric, changing the thickness of the single-layer fabric, and designing the fabric.

The application discloses a kind of quick forming impact honeycomb wave-absorbing composite material and preparation method thereof, it is related to electromagnetic wave-absorbing material and thermoplastic composite material manufacturing field.The weight parts of raw materials include as follows: modified additive 11-14 parts, isocyanate 12-18 parts, PPTA solution 40-60 parts, PA plastic film 100-150 parts, glass fiber 48-80 parts, ultra-high molecular weight polyethylene fiber 80-112 parts, wherein, modified additive is one or more of carbon black, carbon nanotube, carbonyl iron powder;The molecular weight of ultra-high molecular weight polyethylene fiber is 1 million-5 million.The application uses modified additive to dope and blend in PPTA solution, can obtain the aramid paper with higher wave-absorbing performance, and then make wave-absorbing aramid honeycomb core, improve the application of absorbent in wave-absorbing, meet the demand of high-performance product, simultaneously, in the last honeycomb board production link, use new isocyanate fast curing adhesive, shorten the forming time of honeycomb board from 8 hours to 1 minute, greatly improve production efficiency, save energy consumption.

This invention discloses a method for preparing diamond / W-Cu composite materials using binder jet 3D printing technology. The preparation method includes the following steps: (1) adding diamond / W-Cu mixed powder into a printing device and printing a diamond / W-Cu green blank using a binder jet 3D printing device; (2) placing the diamond / W-Cu green blank into a tube furnace, placing a Cu block for melting and infiltration below the green blank, and performing melting and infiltration under an argon atmosphere to obtain the diamond / W-Cu composite material. This invention adds diamond to the W-Cu composite material, utilizing the high thermal conductivity of diamond to improve the thermal conductivity of the W-Cu composite material. Simultaneously, the prepared diamond / W-Cu composite material exhibits low shrinkage and high dimensional accuracy, making it particularly suitable for near-net-shape forming of complex shapes. This improves the designability and processability of the diamond / W-Cu composite material, and the preparation process is simple with low production costs.

The invention belongs to the technical field of biological manufacturing, and discloses a 3D printing gel sphere for constructing an organoid structure and a preparation method of the 3D printing gel sphere. The invention discloses 3D printing bio-ink. The 3D printing bio-ink comprises a photo-crosslinking hydrogel material, an extracellular matrix material loaded with target cells or organoids and DNA dynamic hydrogel. According to the 3D printing bio-ink provided by the invention, the DNA dynamic hydrogel, which is one of the core components of the 3D printing bio-ink, has extremely high biocompatibility and designability, physical crosslinking is realized through hydrogen bonds between DNAs, the crosslinking process is reversible and can dynamically change along with the surrounding environment, and a continuous and appropriate mechanical environment is provided for formation of a large-volume organ structure. The 3D printing bio-ink can be used for constructing a millimeter-level spherical gel culture environment of a large-volume organ-like structure, namely, gel microspheres are obtained through 3D printing.

This invention belongs to the field of aluminum-based composite material preparation technology, and relates to a continuous casting and rolling method for preparing aluminum-based composite material strips. The method involves preparing a reinforcing preform with a thickness not exceeding the roll gap distance in the aluminum-based composite material strip. Before preparing the aluminum-based composite material strip, the casting rolls are water-cooled and run at a set speed. Molten aluminum is injected into the molten pool, and the liquid level is controlled to a set value. Throughout the preparation process, the molten pool liquid level is maintained at the set value. The molten aluminum cools and solidifies upon contact with the roll surface of the casting rolls. Under the casting action of the two casting rolls, an aluminum alloy strip is formed and continuously output from the lower end of the roll gap. During the preparation process, the reinforcing preform moves from top to bottom at a set speed and is immersed in the molten aluminum pool. The molten aluminum penetrates into and fills the interior of the reinforcing preform. The reinforced preform, filled with molten aluminum, gradually solidifies as it moves to the roll gap until it is completely solidified. Then, under the casting force of the two casting rolls, it undergoes rolling deformation to form the aluminum-based composite material strip.

This invention discloses a sound insulation panel and its multi-tiered Helmholtz acoustic metamaterial resonant structure and design method, achieving broadband sound insulation, enriching the product's application scenarios, and optimizing the structural design to achieve easier processing and reduced costs. The multi-tiered Helmholtz acoustic metamaterial resonant structure includes at least two stages of thin-film-Helmholtz resonant structures arranged sequentially along the sound wave incident direction, and a homogeneous plate for fixing the last stage of the thin-film-Helmholtz resonant structure. Each stage of the thin-film-Helmholtz resonant structure includes a thin film and a plate arranged sequentially along the sound wave incident direction, with the opposite surfaces of the thin film and the plate sealed together. A first through-hole and a second through-hole are coaxially arranged sequentially along the sound wave incident direction on the plate. The second through-hole communicates with the first through-hole to form the resonant cavity of the thin-film-Helmholtz resonant structure, and the size of the second through-hole is larger than that of the first through-hole. The first and second through-holes of each stage of the thin-film-Helmholtz resonant structure have a stepped shape with gradually increasing opening size in the sound wave incident direction.

This invention relates to the field of fiber-reinforced composite preform weaving and forming, specifically to an automated compaction device and method for weaving and forming three-dimensional preforms. The device comprises a guide array, upper and lower perforated plates, and a bidirectional steel frame. The weaving and forming method of this invention includes the following steps: designing the guide array and preform process parameters, and arranging the guide array; raising the upper perforated plate and inserting the steel frame to fix the guide array; and compacting the fibers layer by layer in the guide array to ultimately form a three-dimensional preform. Compared to existing technologies, this invention, by inserting a bidirectional steel frame, achieves automated needle alignment and preform densification compaction during the compaction process, thereby improving the automation level of the weaving process.

The invention discloses anacardol modified polymerized MDI, which is prepared by the following method: carrying out hydrolysis reaction on anacardol glycidyl ether under an acidic condition to generate anacardol derived diol; and then reacting the cardanol-derived diol with the polymerized MDI at the temperature of 75-80 DEG C. The invention further discloses polyurethane floor paint based on cardanol modified polymerized MDI. The polyurethane floor paint is prepared from a component A and a component B, the component A is hydroxyl-containing resin or polyol, and the component B comprises cardanol modified polymerized MDI. The floor paint is prepared by reacting cardanol modified polymerized MDI with a hydroxyl-containing substance, a cardanol side chain introduced by the cardanol modified polymerized MDI plays roles of'molecular diluent 'and'space shielding', and the reaction speed and system viscosity of the floor paint are reduced, so that the floor paint has excellent construction performance and low bubble characteristic. The invention further discloses a preparation method of the polyurethane floor paint based on the cardanol modified polymerized MDI.

This invention relates to the field of organic synthesis and discloses a diamine monomer containing both a carboxyl group and an imide ring, as well as a method for its preparation. This diamine monomer simultaneously contains both a carboxyl group and an imide ring. This diamine monomer enriches the variety of carboxyl-functionalized diamine monomers currently available, and the presence of the imide ring enhances the functionality of the diamine monomer, broadening its application scenarios in different polymers and providing polymers with physical and chemical properties not possessed by existing carboxyl-functionalized diamine monomers.

The application discloses a method for growing a multilayer two-dimensional material van der Waals heterojunction by layering, which realizes layer-by-layer growth by precisely controlling reaction temperature and reaction products of each step, and prepares a wafer-level, multilayer, multi-type high-quality van der Waals heterojunction film.In addition, the application prepares a metal film by physical vapor deposition, and obtains a target product by chemical vapor deposition, which not only controls the amount of raw materials involved in the reaction, but also almost has no waste of raw materials.Compared with the traditional method, the raw material utilization rate is greatly improved, the crystal quality of the product is greatly improved, and the product has strong atmospheric environmental stability.The size of the van der Waals heterojunction film prepared by the application can reach wafer level, and the patterned growth can be realized, which has important significance for large-scale production and application.The successful preparation of the multi-type van der Waals heterojunction film material provides technical support for the development of the fields of optoelectronic devices, spin quantum devices and the like.

This invention discloses a large compression ratio hexagonal prism elastic telescopic mechanism with a stable structure, comprising two end three-ring telescopic mechanisms and several series-connected hexagonal prism three-ring retraction mechanisms. The two ends of the series-connected hexagonal prism three-ring telescopic mechanisms are connected to the end three-ring telescopic mechanisms. Each end three-ring telescopic mechanism includes a central disc, a type I connecting rod, a wing-shaped joint, a type II connecting rod, a spring, a Y-shaped joint, and a tension spring. The end three-ring telescopic mechanisms are located at both ends of the series-connected hexagonal prism three-ring telescopic mechanisms, while the hexagonal prism telescopic mechanisms are located in the middle section. The number of end three-ring retraction mechanisms can be configured according to requirements. The end three-ring retraction mechanisms share the spring, Y-shaped joint, and tension spring with the hexagonal prism three-ring telescopic mechanisms. This invention features a simple structure, a large expansion ratio, structural stability, and freely designable telescopic stiffness. It can be applied to various fields with compact installation spaces and requirements for large stroke and variable stiffness buffering.

The application discloses a magnetic rebound key structure and electronic equipment, and relates to the technical field of electronic equipment input devices, which comprises a first component, a second component, a first permanent magnet, a second permanent magnet and a magnetic guide assembly. One of the first permanent magnet and the second permanent magnet constitutes a middle permanent magnet, and the other permanent magnet and the magnetic guide assembly are respectively located on the two sides of the middle permanent magnet in the axial direction. The other permanent magnet is coaxially arranged in correspondence with the middle permanent magnet and forms a magnetic repulsion relationship. The magnetic guide assembly and the middle permanent magnet form a magnetic attraction relationship in the corresponding area, thereby forming a repulsion-attraction composite magnetic circuit. During the pressing movement, the axial gap between the magnetic guide assembly and the middle permanent magnet and the axial gap between the middle permanent magnet and the other permanent magnet change in a manner of increase and decrease, and the magnetic repulsion component and the magnetic attraction component jointly form a magnetic rebound force, so that the magnetic force is recovered without a mechanical spring. The magnetic circuit has strong designability, flexible hand feeling adjustment and good durability.

The invention discloses a preparation method and application of composite conductive ink based on MXene quantum dots / MXene nanosheets, and the preparation method comprises the following steps: preparing an aqueous solution of the MXene nanosheets by adopting a chemical etching method, and then preparing the aqueous solution of the MXene nanosheets into MXene quantum dot powder by adopting a hydrothermal method; and adding MXene quantum dot powder into the MXene nanosheet organic dispersion liquid, carrying out ultrasonic treatment to enable quantum dots to be intercalated among nanosheets, and filtering to obtain the composite conductive ink. MXene quantum dots and an MXene nanosheet organic dispersion liquid are subjected to ultrasonic blending, and the MXene quantum dots are introduced between MXene nanosheet layers, so that the interlayer spacing between the MXene nanosheets is enlarged, and agglomeration of the MXene nanosheets in a solution is effectively inhibited; meanwhile, an MXene nanosheet organic dispersion liquid is adopted, so that the wettability of the ink on various common flexible substrates is improved; in addition, impurity residues can be effectively removed at low temperature, MXene active sites are reserved, and intrinsic high conductivity of MXene is guaranteed.

The invention provides a high-temperature-resistant continuous fiber reinforced non-metal composite pipe and a preparation method thereof. The non-metal composite pipe has the advantages of high temperature resistance, high pressure resistance and high medium adaptability. The high-temperature-resistant continuous fiber reinforced nonmetal composite pipe sequentially comprises a lining layer, a middle layer and an outer layer from inside to outside, and a pipe of the lining layer (1) is made of polyphenylene sulfide or modified polyphenylene sulfide; the pipe of the middle layer is made of a continuous carbon fiber reinforced thermosetting resin composite material; and the pipe of the outer layer is made of a continuous glass fiber reinforced thermosetting resin composite material. According to the high-temperature-resistant continuous fiber reinforced nonmetal composite pipe, the long-term service temperature exceeds 130 DEG C, the blank of lack of high-performance nonmetal composite pipes capable of resisting the temperature of 93 DEG C or above in China is filled, and development and progress of high-performance nonmetal pipes for oil and gas fields are promoted.

The invention discloses a clamping plate type high-flux thin film micro-extraction device and an extraction method, belongs to the technical field of thin film extraction, and solves the problems of poor designability and high requirements on a coating preparation process of a current high-flux thin film micro-extraction device. The device specifically comprises a sample bottle base, an extraction film clamping plate and a top fixing device, an extraction film clamping plate is mounted on the top fixing device, and a plurality of extraction films are fixed on the extraction film clamping plate; and an extraction glass bottle is placed in a sample placing hole in the sample bottle base. According to the invention, during extraction, the base of the sample bottle is arranged below the extraction film clamping plate, so that each extraction film is correspondingly immersed in a sample solution in the extraction glass bottle for extraction; an independent extraction film is fixed on each extraction film clamping plate and does not need to be attached to the surface of a substrate through a coating preparation process, so that the applicability of the high-flux film micro-extraction device can be improved, the use of a high-difficulty coating preparation process is avoided, and the extraction operation difficulty and the application cost are reduced.

The present application belongs to the field of civil aircraft door mechanism design, and relates to a bidirectional locking mechanism for aircraft door. The mechanism has an upper driving shaft, a lower following shaft and a control shaft hinged with the door structure. The upper driving shaft and the lower following shaft are linked through an upper rocker arm, a connecting rod and a lower rocker arm. The lower rocker arm is provided with a circular arc track. A roller rocker arm is fixed on the control shaft. The roller rocker arm is hinged with a roller at the end. The roller cooperates with the inner wall or the outer wall of the distal end of the circular arc track to realize the locking in the open state and the closed state respectively. The present application uses the cooperation of the circular arc surface and the roller to eliminate the reverse driving torque at the contact position, which significantly improves the locking capacity of the mechanism. The circular arc double-side feature of a set of mechanism realizes the locking in the closed state and the open state, simplifies the mechanism form, reduces the number of mechanisms and lowers the product weight. The present application can meet the adjustment and optimization of various spaces and can be applied to various door mechanisms with bidirectional locking requirements.

This invention relates to a three-dimensional integral T-shaped structure fabric containing oblique yarns, comprising a wing panel fabric area and a web fabric area; the wing panel fabric area is divided into a wing panel yarn-splitting fabric area and a wing panel straight fabric area; the web fabric area is divided into a left web fabric area and a right web fabric area; the wing panel yarn-splitting fabric area is connected to the web fabric area by pre-reserved yarns; the oblique yarns include +θ angle oblique yarns and -θ angle oblique yarns, both positioned close to the weft yarns; at the root corner region of the T-shaped structure, the warp, weft, and oblique yarns are oriented in the normal direction, wherein the weft and oblique yarns both turn perpendicularly from the wing panel yarn-splitting fabric area to the web fabric area; the bonding warp yarns bind other yarns together in the wing panel fabric area and the web fabric area respectively. This invention also includes a weaving method for this fabric, which improves the bending and torsional resistance and designability of the T-shaped structure, effectively enhances the working stability of typical T-shaped structures, and extends their service life.

The application provides an outer heat-proof load-bearing and inner heat-insulating integrated cover body and a preparation method thereof, and belongs to the technical field of load-bearing and heat-proof integrated composite materials. The cover body comprises an outermost heat-proof load-bearing layer, an innermost heat-insulating layer and an intermediate adhesive film layer. The heat-proof load-bearing layer is made of fiber reinforced benzoxazine resin, the heat-insulating layer is made of phosphazene rubber, silicone rubber or nitrile rubber, and the adhesive film layer is made of modified benzoxazine adhesive film. The application realizes co-curing of the outer heat-proof load-bearing layer and the inner heat-insulating layer, and solves the interface problem of the outer heat-proof load-bearing layer and the inner heat-insulating layer through preparation and coating of the modified benzoxazine adhesive film.