33 results about "Rigid core" patented technology

A crawler robot comprising a proximal end section, a distal end section and a central core section, through each section passes a central channel; the distal end section comprises a rigid core surrounding a deformable foot, the proximal end section comprises a rigid core surrounding a deformable foot, and the central core section comprises a deformable annular body surrounding an extension spring, surrounding the annular body is at least one balloon, and wherein fluid carrying conduits are connected to the balloon in the central core section, and to the deformable foot in the distal end section and the deformable foot in the proximal end section.

The invention relates to a dry spinning preparation method of low-shrinkage polyamide fibers, and belongs to the technical field of chemical fibers. Nano aluminum oxide and an enhanced modifier are introduced into a fiber raw material for synergistic modification, the fiber is endowed with excellent low shrinkage, the enhanced modifier can be anchored on the surface of a filler through the strong chelation of a molecular center, and meanwhile, polyether long chains on the periphery of the enhanced modifier and a polyamide matrix form dynamic hydrogen bond entanglement, so that the fiber has excellent low shrinkage. And a rigid core-flexible interface-polymer entanglement net structure is constructed. The structure can effectively limit slippage and rearrangement of a polyamide molecular chain on the premise that the spinning state is not remarkably increased, so that the breaking strength and toughness of the fiber are synergistically improved while the boiling water shrinkage rate and the dry heat shrinkage rate of the fiber are remarkably reduced, and the problems of spinning difficulty and obdurability imbalance caused by traditional filler modification are comprehensively solved.

This invention discloses a high-resilience EPDM rubber sealing gasket and its preparation method, belonging to patent classification number C08K13 / 02, and relating to the field of EPDM rubber technology. The method first introduces flexible segments composed of liquid polyisobutylene and hydroxyl-terminated polybutadiene into an EPDM matrix to construct a low-energy-consumption subelastic network; then, a core-shell structure filler with silica as a rigid core and acrylate copolymer as an elastic shell is prepared to eliminate the rigid constraints of traditional filler interfaces; simultaneously, hyperbranched polyesteramide and nano-boron nitride are introduced as a synergistic system to bridge the polarity difference between the flexible segments and the core-shell filler through molecular bridging, and to reduce energy loss by utilizing the low friction and thermal conductivity of nano-boron nitride. The resulting sealing gasket exhibits high resilience, low compression set, and excellent mechanical strength.

A manufacturing method of an outer flexible layer rigid-flexible combined board for an intelligent visual module comprises the following steps: manufacturing a flexible core board and a rigid core board attached with a release layer corresponding to an uncovering area, and then taking a prepreg layer and a copper layer; sequentially stacking and laminating the plates to form a laminated plate; the release layer faces the flexible core plate; the outer layer of the laminated plate is a flexible layer; a first through hole and a second through hole are drilled in the laminated plate, electroplating is carried out, depth-controlled drilling is carried out on the second through hole, the first through hole forms a conducting hole, the second through hole forms a depth-controlled hole, and the depth-controlled hole plate is integrally formed; resin hole plugging processing is carried out on the depth control hole, the depth control hole forms a solid via hole, then surface treatment and uncovering processing are carried out in sequence, then molding is carried out, and the whole board forms the rigid-flexible combined board; the processing flow is greatly simplified, and the processing precision is improved; and the thickness and rigidity of the integrally pressed plate body are enhanced, so that the stability in the polishing process is improved, and the problems of excessive polishing, excessive expansion and shrinkage or breakage of the flexible layer are effectively avoided.

The invention relates to the field of fiber composite material workpieces, and discloses a core mold and a preparation method thereof, a fiber composite material workpiece and a production method thereof, and a cantilever crane machine.The core mold comprises a rigid core mold layer (12) and an expansion core mold layer (2) wrapping the periphery of the rigid core mold layer (12); a plurality of groups of mutually independent heating elements are embedded in the expansion core mold layer (2), so that the heating elements can be controlled to heat different parts of the expansion core mold layer at the same or different heating powers, and the expansion core mold layer is heated to expand. In the production of the fiber composite material part, the core mold can carry out partitioned heating control on different regions of the part by regulating and controlling the heating power of each group of heating elements in real time through a plurality of groups of heating elements which are arranged according to the structure of the part and are mutually independent; therefore, sufficient and uniform forming pressure can be applied to each part of the fiber winding layer, and the fiber winding layer can be uniformly heated and cured, and the method is suitable for production of super-thick, super-long and super-complex structural arm supports.

The present application relates to the technical field of silt soft soil foundation treatment, and discloses a silt soft soil foundation treatment method based on a synergistic reinforcement mechanism, which comprises three main construction procedures of rigid core area construction, pile-surrounding transition area construction and surface layer reinforcement area construction; the pile-surrounding transition area construction is started after the concrete of the cast-in-place pile reaches 1MPa in the initial setting stage and is completed before the final setting of the concrete of the cast-in-place pile. Through the innovative structural design and the accurate process timing, the present application realizes the deep synergy between the cast-in-place pile and the high-pressure jet grouting, and significantly improves the overall rigidity, bearing capacity and anti-uniform settlement capacity of the foundation.

The invention discloses an impact-resistant electronic component waterproof powder coating and a preparation process thereof, and relates to the technical field of electronic component coatings, the impact-resistant electronic component waterproof powder coating comprises epoxy resin, a curing agent, an inorganic filler, an organosilicon modified hyperbranched polyester flexibilizer and an auxiliary agent; the organic silicon modified hyperbranched polyester toughening agent is prepared by the following steps: carrying out melt polycondensation on a polyhydroxy compound and excessive polybasic acid anhydride which are used as raw materials to construct a carboxyl-terminated hyperbranched polyester core, and partially grafting the core by utilizing polysiloxane containing an epoxy group to introduce a flexible hydrophobic chain segment, so as to obtain the organic silicon modified hyperbranched polyester toughening agent. And carrying out end-capping modification on the residual end carboxyl group by using epoxy chloropropane under an alkaline condition. By constructing a chemically anchored rigid core-flexible shell topological structure, impact energy and thermal stress are effectively dispersed, excellent heat resistance and dimensional stability are maintained while the coating is prevented from cracking, phase separation and water vapor permeation are completely eradicated through a built-in compact hydrophobic network, and lasting and reliable mechanical protection and insulation guarantee are provided.

The invention discloses a fabric hybrid electronic integrated system with a stretchable interface. The fabric hybrid electronic integrated system comprises a laser modified fabric substrate, a rigid chip, a printed electrode and a printed interconnection wire. The laser modified fabric is obtained by irradiating a photosensitive polymer composite fabric with laser, can be designed in a customized manner and manufactured in one step by regulating and controlling laser parameters, and simultaneously realizes three different effects: (1) the interface bonding of a printed layer is enhanced; (2) the cross-layer short circuit of the interconnected wires is inhibited; and (3) strain isolation among the rigid chip, the elastic fabric and the interconnected wires. The mechanically enhanced and surface modified fabric realizes heterogeneous integration of a rigid chip and a circuit on the fabric, has interface stretchability, and has potential in the fields of wearable health management and human-computer interaction.

The utility model discloses a ceramic tube target forming device, which is used for solving the problems of non-uniform powder filling and poor exhaust effect during cold isostatic pressing forming of a ceramic tube target in the prior art. The device comprises a cylindrical elastic leather sheath formed by pouring polyethylene resin and a cylindrical rigid core rod concentrically arranged with the cylindrical elastic leather sheath, wherein the cylindrical elastic leather sheath and the cylindrical rigid core rod form an annular powder filling space; the bottom sealing assembly and the top sealing assembly respectively seal the bottom and the top of the powder filling space; the vibration device is arranged below the bottom sealing assembly, comprises a flat-plate-shaped placing part and is used for placing a leather sheath and a core rod, and the powder in the powder filling space is tamped through vibration; the powder filling device is arranged at the top of the leather sheath and used for filling powder into the powder filling space. The device disclosed by the utility model is simple in structure and convenient to operate, can realize uniform filling and effective exhausting of powder, and improves the forming quality and the yield of the ceramic tube target.

One embodiment of a collectible sleever tool. The tool is comprised of a semi-rigid core 3 of a paper material with each surface covered with a material layer 2 of soft, smooth, clear, archival-quality biaxially oriented polypropylene (BOPP), that when configured together comprises a collectible sleever tool 1. It can be used to help place a collectible card 4 into a collectible item protective sleeve 5. The tool provides for advantageous handling, movement, protection, and storage of collectibles. Other embodiments are described as shown.

The invention relates to a scratch-resistant automobile film and a preparation method thereof, and belongs to the technical field of composite film materials. The vehicle film is of a multi-layer composite structure and sequentially comprises a pressure-sensitive adhesive layer, a TPU base film, a functional coating and a release film from inside to outside. The innovation is that the functional coating is formed by curing slurry containing a specific self-repairing anti-scratch agent, and the anti-scratch agent is prepared by reacting hydroxyl-terminated silicone oil with dichloromethylvinylsilane to form an alkenylation intermediate, then introducing an aldehyde group through mercaptoacetaldehyde click addition, and finally carrying out Mannich reaction with aminophenyl POSS (Polyhedral Oligomeric Silsesquioxane). Therefore, a composite structure of'POSS rigid core-dynamic imine bond-flexible thioether chain 'is constructed on an organic silicon side chain. Due to the structure, the coating has excellent scratch resistance, high light transmittance and efficient thermal stimulation response self-repairing capability.

The present application relates to a kind of antibacterial weatherable ASA composite material and its preparation method, belong to ASA composite material preparation technical field.The composite material includes the following weight parts raw materials:ASA resin 100 parts, antibacterial agent 30-50 parts, auxiliary agent 1-5 parts;The antibacterial agent is the complex with inorganic filler as core, with quaternary ammonium salt polymer as shell.In the present application, the antibacterial agent is formed by inorganic filler through surface grafting and surface condensation reaction two steps, the core is rigid core, layer is polyester elastic layer (polyester layer contains the flexible chain of polysiloxane chain), it can exert the toughness enhancement effect of rigid particle and flexible chain cooperation while exerting the antibacterial performance of quaternary ammonium salt, improves the toughness performance of ASA resin.

The utility model discloses a vibration damping device and a motor, and the vibration damping device comprises a housing which is internally provided with a containing cavity capable of containing a motor main body; the vibration reduction ring is arranged in the accommodating cavity and surrounds the outer side of the motor main body, the vibration reduction ring comprises an inner ring, an outer ring and a first elastic material, the inner ring and the outer ring are coaxially arranged in an inner-outer alternate manner, and the first elastic material is filled between the inner ring and the outer ring; wherein a plurality of rigid core bodies extending in the axial direction of the vibration reduction ring are arranged in the first elastic material, and all the rigid core bodies are periodically arranged in the circumferential direction of the vibration reduction ring according to the number. According to the vibration damping device, the vibration damping rings are adopted to form a phononic crystal structure, and vibration and noise generated by the motor at all working frequencies can be effectively reduced through the band gap characteristic of the phononic crystal.

A square-shaped aluminum alloy profile profiling die comprises an upper die plate, a lower die plate and a core assembly, the core assembly comprises a fixed core fixed to the lower die plate and a sliding core assembly arranged on a bottom plate, and the lower die plate is fixed to the bottom plate; the sliding core assembly comprises a sliding core, a core penetrating air cylinder, a material supporting block, a first-stage sliding table, a first-stage sliding table air cylinder, a first-stage sliding table guide rail, a second-stage sliding table, a second-stage sliding table guide rail and a second-stage sliding table air cylinder, the first-stage sliding table air cylinder is fixed to the bottom plate and fixedly connected with the first-stage sliding table, the first-stage sliding table is connected with the bottom plate through the first-stage sliding table guide rail, and the second-stage sliding table air cylinder is fixed to the bottom plate and fixedly connected with the second-stage sliding The material supporting block is fixed on the first-stage sliding table, the second-stage sliding table is connected with the first-stage sliding table through the second-stage sliding table guide rail, the second-stage sliding table air cylinder is fixed on the first-stage sliding table and fixedly connected with the second-stage sliding table, and the core penetrating air cylinder is transversely fixed on the second-stage sliding table and connected with the sliding core. The rigid core is divided into the fixed core and the sliding core, and the action that the pressed core is smoothly pulled out of a product piece can be completed.

This invention discloses a method for rigid-flexible interconnection using liquid metal based on patterned indium in-situ doping, belonging to the field of rigid-flexible interconnection technology. The method includes the following steps: Step 1. Preparing a patterned indium conductive material; Step 2. Mixing the patterned indium conductive material with liquid metal for in-situ doping, allowing the patterned indium conductive material to dissolve in-situ in the liquid metal to form an indium-based liquid metal; Step 3. As indium metal diffuses, high-doping concentration regions and low-doping concentration regions of indium metal are formed in the indium-based liquid metal. Rigid leads are immersed in the high-doping concentration region, and the low-doping concentration region is interconnected with the liquid metal wires to form a rigid-flexible interconnection structure. This invention effectively solves the Young's modulus mismatch problem at the interface between rigid chips and flexible circuit systems, increases interconnect reliability, provides high conductivity, and simplifies the fabrication process.

This invention provides a tribranched alkyne resin, polymer, its preparation method, and applications, relating to the technical field of resin materials. The tribranched alkyne resin and polymer synthesized in this invention, relying on a rigid core and ring crosslinking polymerization mechanism, solves the core contradiction of the mutual constraint between the dielectric constant and the coefficient of thermal expansion of traditional resins. The branched structure increases free volume and reduces the dielectric constant, while the symmetrical rigid rings and high crosslinking density inhibit chain segment movement, significantly reducing the coefficient of thermal expansion. The numerous rigid aromatic ring structures in the molecule significantly improve the material's heat resistance and mechanical strength. The resin can be used as a single component or blended with photosensitive resins as a two-component compound, and its performance can be further optimized by adding fillers, offering high formulation flexibility. The preparation and curing processes are simple and mild, the raw materials are readily available, and it is compatible with existing industrial production, making it widely applicable in high-end material fields such as electronic packaging and insulation.

This invention discloses a method for preparing a rigid-flexible bonded plate with a primary and secondary structure, relating to the field of rigid-flexible bonded plate technology. The method includes: fabrication of a flexible core board, fabrication of a rigid core board, fabrication of a secondary plate using PP, secondary plate fabrication, fabrication of PP with open windows for bonding the primary and secondary plates, and fabrication of the primary plate for the rigid-flexible bonded plate. The PP used for bonding the primary and secondary plates employs an extended open window design. The primary plate fabrication stage utilizes a step-by-step opening process: laser opening along the PP edge and mechanical milling along the rigid-flexible bonded area. This invention improves the protection of the rigid-flexible bonded area capping layer and the control of the opening boundary by first forming a relatively complete secondary plate structure, then combining it with the primary plate for composite processing. The combination of extended PP windowing and the step-by-step opening process reduces the risk of delamination, cracking, and other adverse effects, and enhances processing stability and first-pass yield.

An impact dissipating bollard system includes a vertical stanchion and a composite energy-absorbing deformable cartridge configured to be positioned within a retaining foundation that includes a rigid core portion including a stanchion-receiving aperture and first and second projections extending from the rigid core portion. The first and second projections, together with the core portion, form the dumbbell shape. Energy-absorbing resilient elastic material surrounds the rigid core portion and is positioned within recesses within the first and second projections. The bollard system is configured such that impact energy is transferred from the vertical stanchion to deform the composite energy-absorbing deformable cartridge. The bollard system retaining foundation includes a reinforcing frame embedded in concrete and having a strength of least 30 MPa.

This invention discloses a skin-friendly, antibacterial, and ammonia-inhibiting diaper surface layer, its preparation method, and the diaper itself. The surface layer is formed from composite fibers; the composite fibers include a core layer and a sheath layer covering the outside of the core layer. The sheath layer is formed by melt spinning a polyethylene masterbatch and a non-leaching physical antibacterial masterbatch; the core layer is formed by melt spinning a polyethylene terephthalate masterbatch. The non-leaching physical antibacterial masterbatch includes a polyethylene carrier and nano-composite antibacterial powder dispersed in the polyethylene carrier. This invention directionally loads the nano-composite antibacterial powder onto the sheath layer, making the sheath layer a soft, skin-friendly contact surface with antibacterial and ammonia-inhibiting functions. The rigid PET core layer provides mechanical support and avoids ineffective consumption of functional masterbatch, thus enabling the diaper surface layer to possess softness, fluffiness, structural stability, and high utilization rate of functional components.

A hybrid core substrate with embedded components, and methods for making the same, are disclosed. In an aspect a hybrid core substrate comprises a rigid core, a first laminate layer structure disposed above and mounted to the top surface of the rigid core and having a cavity in which a first component is embedded, and a second laminate layer structure disposed above and mounted to a top surface of the first laminate layer structure and having at least one electrical connection to the first laminate layer structure and at least one electrical connection to the first component, a first plurality of contacts disposed on the top surface of the second laminate layer structure and electrically connected to the second laminate layer structure. In some aspects, at least one contact is electrically connected to the embedded component.

This item is a rope crossing belt used by firefighters when crossing a horizontally stretched rope. As shown in "Reference Figure 1 showing the state of use," the part that is wrapped around the stomach contains a rigid core material. As shown in "Reference Figure 2 showing the state of use," the belt surface of the core-reinforced part is in contact with the rope, and the firefighter slides along the rope.

This invention discloses a preparation method based on the structural modification of bio-based polyols, belonging to the field of bio-based polymer materials technology. The method includes: firstly, preparing lignin nanospheres with a surface-loaded atom transfer radical polymerization initiator as a rigid core through solvent replacement and surface modification; secondly, synthesizing a plant oil-based monomer with polymerizable activity; then, using surface-initiated atom transfer radical polymerization technology, in-situ grafting a plant oil polymer brush onto the surface of the lignin core to construct a core-shell structure precursor; finally, subjecting the shell layer of the precursor to epoxidation and ring-opening hydroxylation post-treatment. This invention achieves ordered composite of rigid lignin and flexible plant oil at the molecular scale through chemical bonding, effectively solving the problems of poor compatibility in physical blending and the uncontrollable structure of traditional modification methods; the resulting polyol possesses both rigid and flexible properties, and the preparation process is green and environmentally friendly, suitable for the preparation of high-performance bio-based polyurethane materials.

The invention relates to the technical field of building material logistics transportation, and discloses an anti-collision transportation method for building waste regenerated hollow bricks, which comprises the following steps: sleeving the regenerated hollow bricks into a rigid mandrel to form lateral space isolation; and then the static pre-tightening wedge block is driven to extrude the flexible contact petal body, and basic static locking is established. In the transportation process, when vertical impact occurs, the dynamic inertia sliding block generates axial displacement through inertia and is wedged into the flexible contact petal body, axial inertia force is converted into additional radial expansion force, and self-adaptive enhancement of the clamping strength is achieved; meanwhile, vibration energy is dissipated through viscoelastic shear deformation of the flexible contact petal bodies. And during unloading, driving is relieved, the elastic element is used for resetting, and the flexible contact petal body retracts to reconstruct the assembly clearance. Through combination of static maintenance and dynamic gain, the problem that fragile bricks are prone to being collided and damaged in the transportation process is effectively solved, and stress buffering and stable transportation are achieved.

The application discloses a manufacturing process of a rigid-flexible combination board, which comprises the following steps: providing a flexible core board, a first adhesive layer and a first rigid core board, sequentially laminating the first adhesive layer and the first rigid core board on opposite sides of the flexible core board, performing windowing treatment on the first adhesive layer and the first rigid core board, and forming a flexure area in the window; providing a gasket, the gasket comprising sequentially laminated polyimide adhesive tape with low hardness, pure glue and a first cover film, and arranging the gasket in the window so that the polyimide adhesive tape is adjacent to the flexible core board and the first cover film is away from the flexible core board; pressing and performing copper hole sinking, outer layer circuit manufacturing, solder mask and surface treatment on the pressed structure; and taking out the gasket to obtain the rigid-flexible combination board. The application uses flow semi-cured sheets as the adhesive layer to avoid uneven board surface, and the gasket is deformed to prevent glue during pressing, so that the rigid-flexible combination board can be obtained through one-time pressing, and the production cycle is short.

The utility model relates to the technical field of fan parts, in particular to a shaft sleeve assembly. The utility model provides a shaft sleeve assembly. According to the technical scheme, the shaft sleeve assembly comprises a rigid mandrel sleeve, a rigid outer ring body and a rubber layer integrally formed between the rigid mandrel sleeve and the rigid outer ring body in an injection molding mode. A shaft hole used for being connected with a motor shaft is formed in the center of the rigid mandrel sleeve, and an annular sawtooth edge is constructed on the outer side wall of the rigid mandrel sleeve. A plurality of protrusions are regularly arranged on the inner side wall of the rigid outer ring body in the circumferential direction. And the annular sawtooth edge of the rigid mandrel sleeve and the bulge of the rigid outer ring body are embedded into the rubber layer. The scheme has the advantages of simplicity and convenience in installation, high tensile strength and torsion strength and good damping effect.

This invention discloses an impact-resistant epoxy-polyurethane hybrid composite material suitable for extremely cold environments and its application in exoskeleton joint components. The impact-resistant epoxy-polyurethane hybrid composite material comprises component A and component B. Component A includes epoxy resin, a double-ended epoxy-terminated polyurethane prepolymer, a flexible spacer segment component, and nano-elastic particles with a three-layer structure of rigid core-soft shell-reactive bridge. Component B includes an amine curing agent. The nano-elastic particles, from the inside out, consist of an inorganic rigid core, an elastic polymer shell, and a reactive bridge outer layer containing epoxy reactive groups. The impact-resistant epoxy-polyurethane hybrid composite material provided by this invention exhibits significantly improved impact resistance and crack propagation resistance in extremely cold environments (-50°C), and significantly enhanced notched Izod impact strength and plane strain fracture toughness at -50°C.

A method for producing an expandable baby feeding container, includes providing a stretchy tube of predetermined length and at least one tubular rigid core member shorter than tube's length. The core member is inserted into the tube, followed by squeezing a first region of the tube onto the core to form a watertight connection between the tube's inner face and the core's overlapping outer face. Squeezing entails positioning a heat-shrink catch-ring around the intended connection area and applying a predetermined dose of heat, causing the catch-ring's inner face to press the tube region against the core with a compressive force. This force ensures the tube remains inseparable from the core under expected operational fluid pressures exerted inside the tube by the liquid of the baby feeding formula.

The present application belongs to the technical field of subgrade vibration reduction, and relates to a method for reducing vibration of a subgrade excited by a train and a row pile. The method for reducing vibration of the subgrade excited by the train performs variational modal decomposition or multi-source variational modal decomposition on a vibration source signal, splits the vibration source signal into multiple vibration modal components, respectively calculates Rayleigh wavelengths of the multiple vibration modal components according to central frequencies of the multiple vibration modal components, divides a region between a railway and a bridge foundation of a rotary bridge into multiple row pile regions, each of the multiple row pile regions corresponds to a Rayleigh wavelength of a decomposition modal, and designs row pile spacings and row pile lengths of the multiple row pile regions according to the Rayleigh wavelengths. The row pile has a rigid core column inside, a HDPE sleeve pipe is sleeved on a periphery of the core column, an RCM coating layer is processed on an outer layer of the HDPE sleeve pipe, a phase change material is filled in a cavity between the HDPE sleeve pipe and the core column to form a phase change composite layer, and end covers are detachably installed at both ends of the core column. The present application makes a vibration reduction effect comprehensively cover more frequency bands, and the row pile achieves a multi-level energy dissipation effect.

The invention relates to the field of high polymer material modification, in particular to a preparation process of a composite material for a high-strength electronic product shell, which comprises the following steps: premixing a matrix polymer and a multifunctional additive to obtain a mixture; adding the mixture into a double-screw extruder, and carrying out reactive extrusion under the conditions of gradient heating and specific screw rotation speed, so that the multifunctional additive and the matrix polymer are chemically bonded; cooling and pelletizing the extrudate to obtain a composite material; the preparation method of the multifunctional additive comprises the following steps: (a) synthesizing amino-terminated hyperbranched aromatic polyamide as a rigid core; (b) forming a core-shell structure intermediate; and (c) reacting the terminal hydroxyl of the core-shell structure intermediate with epoxy chloropropane, and converting into an epoxy group, thereby obtaining the epoxy-terminated core-shell structure hyperbranched polymer. The problem that toughness and rigidity are difficult to consider in traditional toughening modification is solved.