Product
Patsnap Eureka
For R&D, Patsnap Eureka makes reading and utilizing patents & technical documents easy.
Patsnap Eureka AIR
Designed for self-driven R&D workflows. Generate viable solutions, solve complex R&D challenges, empower your innovation with AI.
Patsnap Eureka Materials
Designed for material experts only. Revolutionize your material R&D, from search, analyze, to developing new materials.
Feature
TechResearch
Generate reliable direction feasibility study reports for your R&D in just a few steps.
TechSeek
Discover and master advanced knowledge NOW. Basics, ideas, possibilities, all at once.
TechMind
As an expert in R&D Theories, TechMind can generates customized viable solutions instantly.
TechRisk
Analyze your overall solution with one click, know your potential R&D risks in advance.
TechMonitor
Get weekly tech updates, stay abreast of the latest tech innovations and key insights.
Patents
Literature
Hiro is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
70results about How to "Good static stability" patented technology
Efficacy Topic
Property
Owner
Technical Advancement
Application Domain
Technology Topic
Technology Field Word
Patent Country/Region
Patent Type
Patent Status
Application Year
Inventor
Reduced height pickup truck bed support and method of manufacturing
InactiveUS20110298245A1Lower height requirementLower center of gravityVehicle seatsUnderstructuresPickup truckVehicle frame
A pickup bed support structure that includes longitudinally extending frame rails to which transversely extending beams used to support the truck bed box are assembled. The beams are received below a top surface of the frame rails by forming notches or holes in the frame rails into which the beams are inserted. Alternatively, notches or holes may be provided in the transversely extending beams that receive the longitudinal extending frame rails. One method of manufacturing a pickup truck bed support structure is disclosed in which holes are provided in the longitudinally extending frame rail that receive the transversely extending beam that support the pickup truck bed. An alternative method is also disclosed in which notches are formed in the frame rails that receive the beams that are welded to the frame rails prior to assembling the pickup truck bed to the beams.
Owner:FORD GLOBAL TECH LLC
Light fighter lethality seeker projectile
InactiveUS6959893B1Improve hit rateCompensating for such errorExplosive chargesAmmunition projectilesElectricityVoltage regulation
A projectile comprises an imaging seeker at a front of the projectile; a front warhead behind the imaging seeker; a power supply; an electronics unit connected to the power supply and comprising a microprocessor circuit board, a voltage regulator circuit board, an inertial measurement circuit board and a fuze and safe and arm circuit board, all electrically connected to each other, the microprocessor circuit board also being connected to the imaging seeker; a rear warhead, the front and rear warheads being electrically connected to the safe and arm circuit board; a rocket motor electrically connected to the electronics unit; foldable fins mounted at the rear of the projectile; a shell that encases the front warhead, the power supply, the electronics unit, the rear warhead and the rocket motor; and a maneuver mechanism disposed in the shell and electrically connected to the microprocessor circuit board.
Owner:UNITED STATES OF AMERICA THE AS REPRESENTED BY THE SEC OF THE ARMY
Method for preparing self-emulsifying carbon fiber sizing agent component
InactiveCN101880967AGood compatibilityGood static stabilityCarbon fibresCarbon fibersSelf emulsifying
The invention discloses a method for preparing a self-emulsifying carbon fiber sizing agent component, which comprises the following steps of: performing graft polymerization reaction on epoxy resin by adopting an emulsion polymerization method to prepare modified epoxy emulsion; and standing the modified epoxy emulsion at 80 DEG C for two hours, adding dropwise ammonia water into the solution after demulsification to make the solution alkaline, standing the solution at 95 DEG C in a sealing way, stirring and hydrolyzing the solution for 3 hours, taking the solution out, acidifying and neutralizing the redundant ammonia water, drying and rinsing the solution to produce modified bisphenol A epoxy resin, placing the synthesis product in the step and the bisphenol A epoxy resin into a container according to a certain weight ratio, and performing phase-inversion emulsification on the mixture at 70 DEG C to prepare a modified epoxy emulsion sizing agent component with certain solid content. The prepared carbon fiber sizing agent component has the characteristics of storage time longer than 12 months, high high-temperature stability, and high dilution stability, so that the method has huge breakthrough compared with the prior art. Carbon fibers sized by the sizing agent have high machining performance and improved inter-layer shear strength.
Owner:BEIHANG UNIV
Airplane with combined-wing layout of flying wing and forward-swept wings
ActiveCN103552682AGood aerodynamic liftOptimize layoutAircraft stabilisationWingsJet aeroplaneInlet channel
The invention provides an airplane with a combined-wing layout of a flying wing and forward-swept wings. The airplane is characterized in that thin-wing type vertical columns A and B are additionally arranged at the 70% wingspan positions of the outer sides of two side wings of a flying-wing airplane with backward-swept wings, a thin-wing type vertical column C is additionally arranged at the tail part of the flying-wing airplane, and horizontal forward-swept wings are additionally arranged at the top ends of the three thin-wing type vertical columns A, B and C so as to form the combined-wing layout of the flying wing and the forward-swept wings; elevators are arranged on the horizontal forward-swept wings and a rudder is arranged on the vertical column C; a duct type air inlet channel is adopted on the upper wing surface of the flying wing, and cracking type drag rudders are distributed at the thin-wing type vertical columns A and B. The airplane provided by the invention has the advantages that under the condition that the structure strength is effectively guaranteed, the effective aspect ratio of the wings is increased, the induced drag is reduced, the lift-drag characteristics of the airplane are improved, the stealth performance of the airplane is improved, direct-force control of the airplane in the vertical direction is realized and the detecting accuracy under the maneuvering condition is improved.
Owner:BEIHANG UNIV
Intake noise suppressor
ActiveUS7198017B2Manufactured easily and reliably and economicallyGood static stabilityExhaust apparatusSilencing apparatusSuppressorEngineering
An intake manifold 10 in the air intake tract of an internal combustion engine which has a main flow cross section 14 between an oncoming flow side 12 and an outgoing flow side 13. At least one resonator chamber 23 is arranged on the circumference of the main flow cross section 14 in communication with the main flow cross section 14. The resonator chamber 23 is surrounded by side walls 30 and closed by a cover 28, with the side walls 30 of the resonator chamber 23 and the wall 15 forming the main flow cross section 14 being manufactured together in one piece. A parting plane 31 situated between the cover 28 and the side walls 30 of the resonator chamber 23 is arranged outside of the wall 15 forming the main flow cross section 14.
Owner:MANN HUMMEL GMBH
Preparation method for poly-2-olefine drag reducer of pipe oil transporting product
A process for preparing the alpha-olefine as the drag reduce used for delivering oil in pipeline includes such steps as loading monomers into reactor, adding catalyst while stirring in the condition of isolating air, adding the oil-soluble polyester, polyether or ester-ether copolymer solution to which the alpha-olefine polymer is not dissolved, and reacting at -50-20 deg.C for 3-10 days. Its advantages are simple process, and high molecular weight, high effect, high stability and low viscosity of product.
Owner:PIPECHINA SOUTH CHINA CO
Carbon fiber water-soluble epoxy resin sizing agent
The invention discloses a carbon fiber water-soluble epoxy resin sizing agent and a preparation method thereof. The sizing agent comprises main slurry and deionized water as main components, wherein the mass ratio of the main slurry to the deionized water is (50-80):(20-50); and the main slurry consists of modified phenol-formaldehyde epoxy resin and allyl polyoxylethylene ether (AEPH), and the mass ratio of the modified phenol-formaldehyde epoxy resin to AEPH is (60-90):(10-40). The preparation method of the sizing agent comprises the following steps: firstly reacting phenol-formaldehyde epoxy resin with diethanolamine to obtain water-soluble phenol-formaldehyde epoxy resin; and then mixing the water-soluble resin with AEPH in proportion, and performing dilution to reach a certain concentration by using the deionized water to obtain the sizing agent. The sizing agent disclosed by the invention is good in stability and low in cost, cannot cause environmental pollution, and is simple in preparation method; good post-processing performance of carbon fibers can be provided by adding flexible molecular AEPH; experiments show that after the carbon fibers are coated with a proper amount of the sizing agent, the post-processing performance can be significantly improved; and the performance of a carbon fiber epoxy resin composite material can be improved.
Owner:UNIV OF JINAN
Permanent magnet synchronous motor fault-tolerant control device based on composite speed estimated rotating speed
InactiveCN104393815AGood static stabilityWide speed rangeElectronic commutation motor controlVector control systemsPermanent magnet synchronous motorPermanent magnet synchronous generator
The invention discloses a permanent magnet synchronous motor fault-tolerant control device based on composite speed estimated rotating speed. After rotating speed omega 2 obtained by estimation through a model reference adaptive method (MRAS) and rotating speed omega 3 obtained by estimation through a high-frequency injection method are subjected to weighted processing, the estimated rotating speed is obtained; prior probabilities obtained based on a maximum likelihood estimation algorithm are inputted into a fault-tolerant control module based on posterior probability to obtain motor vector-controlled feedback rotating speed, accordingly, the goal of improving the dynamic performance of a system is realized, and meanwhile, the effect of steady-state error caused by the method is also reduced.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA
Collagen fiber stuffing product and processing method thereof
ActiveCN1730376AHigh heat retention rateHigh static stabilityMonocomponent protein artificial filamentUpholstery fillingTextile fiberEngineering
The invention provides a collagen fiber stuffing product which comprises 50%-100% collagen fiber in the stuffing and its Process for preparing. The said stuffing is oakum stuffing mixed collagen fiber deliberating from animal hide with at least another textile fiber; or materials stuffing arise from teasing, bedding web and modeling. The stuffing product in the invention is provided with advantages of well puffy, well rebound, well warming, flameproof and sound absorbing which the current stuffing can not get because it uses collagen fiber as main stuffing. The stuffing produced in the process provided in the invention has no peculiar smell, without putrefaction, without mouldy, and can be used in practice. The product is low cost and settles the problem of leftover bits and pieces of industrial material, so it is environment friendly.
Owner:GUANGZHOU WUYUAN NEW MATERIAL CO LTD
Intake noise suppressor
ActiveUS20060027204A1Reduce complexitySimple designExhaust apparatusSilencing apparatusSuppressorEngineering
An intake manifold 10 in the air intake tract of an internal combustion engine which has a main flow cross section 14 between an oncoming flow side 12 and an outgoing flow side 13. At least one resonator chamber 23 is arranged on the circumference of the main flow cross section 14 in communication with the main flow cross section 14. The resonator chamber 23 is surrounded by side walls 30 and closed by a cover 28, with the side walls 30 of the resonator chamber 23 and the wall 15 forming the main flow cross section 14 being manufactured together in one piece. A parting plane 31 situated between the cover 28 and the side walls 30 of the resonator chamber 23 is arranged outside of the wall 15 forming the main flow cross section 14.
Owner:MANN HUMMEL GMBH
Water-borne sizing agent for carbon fiber and preparation method and sizing method thereof
InactiveCN105332285ASmall particle sizeNarrow particle size distributionCarbon fibresEpoxyAdhesion force
The invention discloses a water-borne sizing agent for carbon fiber. The water-borne sizing agent is prepared from 5-10% of epoxy resin modifier, 10-25% of epoxy resin, 65-80% of deionized water and 1-5% of auxiliary. The invention further provides a preparation method of the water-borne sizing agent for the carbon fiber. According to the preparation method, a certain amount of epoxy resin and modifier are taken and subjected to reaction for 1-3 hours to prepare anionic modified epoxy resin, and then a certain amount of deionized water is dripped and other auxiliaries are added to prepare the anionic water-borne epoxy sizing agent for the carbon fiber. The invention further provides a sizing method of the water-borne sizing agent for the carbon fiber. According to the epoxy carbon fiber sizing agent, the emulsion particle diameter is small, particle diameter distribution is narrow, and stability is high; through strict control over reaction conditions, when the carbon fiber subjected to sizing is used for preparing a PA6 (nylon 6) composite material, the adhesion force at the interface between the carbon fiber and resin is enhanced, wear resistance is improved, and tensile strength, bending strength and other properties are greatly improved.
Owner:GUANGDONG UNIV OF TECH
Particulate filter and method of use
InactiveUS20100218595A1Easy dischargeAccurate measurementMembranesSemi-permeable membranesParticulatesMetal foil
Owner:MEASUREMENT TECH LAB CORP
Energy-storing phase modulation motor
InactiveCN1595772AGood static stabilityImprove stabilitySynchronous machinesAsynchronous induction motorsElectric power systemFlywheel
The invention is an energy-storage phase-adjusting electric machine, improving the structure of a synchronous phase-adjusting machine to increase rotor movement of inertia so as to store energy, where its stator and rotor are both composed of a three-phase symmetrical winding, the rotor winding current is fed in through slide ring and the stator winding is connected with a power system; its rotor iron core adopts a laminate structure; its rotor movement of inertia is very large or it installs a flying wheel with very large movement of inertia, where the movement of inertia is above twice larger than that of routine equal-capacity synchronous phase-adjusting machine; its rotor exciting current is an external controllable three-phase AC-DC exciting current. A flexible power regulation and control device composed of it has the functions of energy storage, electric power generation and phase adjustment, and can extremely improve static, transient and voltage stabilities of a system.
Owner:HUAZHONG UNIV OF SCI & TECH
Alpha-olefin polymer drag-reducing suspension and its prepration method
InactiveCN1536009AIncrease concentrationLow viscosityPipeline systemsHigh concentrationPolymer science
The present invention relates to an alpha-olefin drag-reducing polymer suspending liquid for oil pipeline and its preparation method. Alpha-olefin polymer small block and oil-soluble suspension base liquor in which the alpha-olefin polymer is not dissolved are mixed according to the weight ratio of 1:1-1:4, then fed into colloid mill and ground to obtain the processing fineness of 2-50 microns. Said invention drag-reducing polymer suspending liquid has high concentration, low viscosity and good standing stability, also can be used in finished product oil pipeline.
Owner:PIPECHINA SOUTH CHINA CO
Method for inhibiting fluctuation of random power of alternative-current junctor
ActiveCN102790401ASuppression of random power fluctuationsGood static stabilityPower oscillations reduction/preventionPower modulationPower grid
The invention provides a method for inhibiting fluctuation of random power of an alternative-current junctor, which is characterized by changing the power of a liner circuit through establishing a direct-current modulation controller so as to transfer the fluctuation of the random power on the alternative-current junctor. The method comprises following steps that step S1: a design target of the direct-current power modulation controller is determined according to a set transferring ratio r, wherein the transferring ratio r is a previously-set ratio for the direct-current junctor to share the fluctuation of the random power on the alternative-current junctor according to needs, sigma () is a standard difference function of a signal; sigma (PT) is a standard difference of the alternative-current junctor power PT; and sigma (PDC) is a standard difference of the direct-current circuit power PDC; and step 2: the direct-current power modulation controller comprises a measurement link, a blocking link and a gain link, the modulation signal is the power PT of the alternative-current junctor, and a model of the direct-current power modulation controller is determined according to the time constant Tmes and tw of the measurement link and the blocking link as well as the control gain KDC of the gain link and the modulation signal PT. The method has an important significance for guaranteeing the safe and stable operation of an extreme high voltage synchronization power grid.
Owner:STATE GRID CORP OF CHINA +2
Vehicle seat
InactiveCN105339207AReduce section thicknessReduced aerodynamic dragBack restsSeat framesEngineeringMechanical engineering
A vehicle seat (10) comprises a base unit (12) and an upright seat back (14), the base unit (12) being moulded composite materials with optimised fibre orientations and metallic fixing points for attachment to the vehicle and at least two laterally-spaced upstanding arms (46), the seat back (14) being of a moulded composite material with optimised uni-directional fibre orientations and being attached to each upstanding arm (46) via a connection that is distributed along the vertical direction. This vertical distribution can be achieved by providing a plurality of mechanical attachments (48) between the two parts, with the attachments (48) spaced apart in the vertical direction.
Owner:GORDON MURRAY DESIGN
Method for preparing self-emulsifying carbon fiber sizing agent component
InactiveCN101880967BGood compatibilityGood static stabilityCarbon fibresCarbon fibersSelf emulsifying
Owner:BEIHANG UNIV
Excitation control method for dual-axis excitation turbogenerator
PendingCN109586629AIncrease freedomImprove static stabilitySynchronous generator controlGenerator control by field variationDual axisElectric generator
The invention belongs to the technical field of the control of a two-axis excitation generator and particularly relates to an excitation control method for a two-axis excitation turbogenerator. The method comprises the steps that: two sets of excitation windings on d and q axes of a rotor are set, the excitation windings are uniformly distributed on the surface of the rotor and are symmetrical, winding axes are perpendicular to each other, direct current is introduced to the two sets of excitation windings to generate two excitation fundamental wave magnetomotive forces, the position of an airgap synthetic magnetomotive force relative to the rotor is changed by adjusting the proportions of the two excitation fundamental wave magnetomotive forces while a combined excitation magnetomotive force is maintained to be unchanged, and therefore, the static stability limit of the two-axis excitation turbine generator is improved. The two-axis excitation turbine generator can operate at any rotation speed under the corresponding excitation control, the same-frequency asynchronous operation of the generator is realized, the anti-interference ability of the generator is effectively improved,and the power supply reliability of a key area is ensured.
Owner:NORTH CHINA ELECTRIC POWER UNIV (BAODING)
Semi-mounted reversible plow with rotary amplifier
ActiveUS9078388B2Great tractionIncrease torqueAgricultural machinesPloughsRotational axisAudio power amplifier
An apparatus for transfer of the weight from the plow to the tractor to improve the traction of the tractor for which the rotational axis 11 is arranged in such a way that the transfer of the weight, at the same time, also effects a required torque for the turning process and an increase in the stability of the tractor during the turning process.
Owner:LEMKEN
Mechanical rotational drive
InactiveUS7503431B2Little bearing clearanceReduce weightSpring motorYielding couplingEngineeringTorsion element
A mechanical rotational drive has a bar-like torsion element, whereby the torsion element is firmly clamped with a first end in a bearing device. The torsion element can be pivoted with a second free end with respect to the clamped end about the longitudinal axis, forming a rotation axis, of the torsion element between a relaxed position and a tensioned position, whereby the length of the torsion element is reduced with respect to the relaxed position when the torsion element is brought into its tensioned position. A device for transmitting a torque into the torsion element or out of the torsion element is provided in the area of the free end, and a damping device is arranged in the axial direction of the torsion element at a fixed distance from the bearing device and adjacent to the free end of the torsion element, and a damping part is provided on the torsion element in the area of the free end of the torsion element, which damping part in the relaxed position is in friction engagement with the damping device and which in the tensioned position is not engaged with the damping device.
Owner:EADS SPACE TRANSPORTATION
Drilling and loading vehicle for small-section roadway tunneling and working method
The invention discloses a drilling and loading vehicle for small-section roadway tunneling and a working method. The drilling and loading vehicle for small-section roadway tunneling comprises a vehicle frame body, a walking mechanism, a loading and transporting mechanism, a drilling mechanism, a supporting mechanism, a loading and chiseling mechanism and an operation control mechanism, and the walking mechanism, the loading and transporting mechanism, the drilling mechanism, the supporting mechanism, the loading and chiseling mechanism and the operation control mechanism are installed at the bottom of the vehicle frame body; the drilling mechanism uses a multi-degree-of-freedom mechanical arm to be connected with a drilling machine unit and a facing unit, and the drilling adaptation directions are multiple; and the facing unit is used for facing uneven sections, and convenience is provided for drilling work. The supporting mechanism supports a roadway roof during anchoring work, and safety and stability in the anchor hole drilling process are guaranteed. After drilling and blasting, the loading and chiseling mechanism is used for coal seam section coal scraping operation, and then the loading and transporting mechanism is used for transferring, clearing and transporting, so that drilling, loading and transporting are integrated; the operation control mechanism is used for controlling components; and when the drilling mechanism and the supporting mechanism work, a control system does not need to manually control the working state, safety is guaranteed, and the working efficiency is improved.
Owner:LIAONING TECHNICAL UNIVERSITY
Adjustable stability improving device of hypersonic aircraft
ActiveCN107891979AZhang JiaodaIncrease the windward areaAircraft stabilisationAir-flow influencersFlight stability
The invention discloses an adjustable stability improving device of a hypersonic aircraft. The device comprises first tail skirts, second tail skirts, a first shaft sleeve, a second shaft sleeve and acenter shaft, wherein the first tail skirts and the second tail skirts are formed by a plurality of partially overlapped scales in a surrounding mode, and the scales of the first tail skirts are movably connected with the tail end of the aircraft and surround the aircraft by a circle; the scales of all the first tail skirts are connected with the first shaft sleeve through a framework; the scalesof the second tail skirts are movably connected with the tail ends of the scales of the first tail skirts in the axial direction of the aircraft, and the scales of all the second tail skirts are connected with the second shaft sleeve through a framework; the center shaft is sequentially sleeved with the first shaft sleeve and the second shaft sleeve in the axial direction of the aircraft, and thetension angles of the first tail skirts and the second tail skirts are changed freely along the central axis, so that the flight stability of the hypersonic aircraft is adjusted.
Owner:CHINA ACAD OF LAUNCH VEHICLE TECH
Vertical wind power generator with motor startup mode
InactiveCN101546981AGood static stabilityImprove transient stabilityGenerator control by field variationLow speedConstant frequency
The present invention provides a vertical wind power generator with motor startup mode, comprising a column and one or more vertical wind power generation units on the column. The generator is equipped with an excitation system and a damper system. The excitation system comprises an excitation controller, an exciter, a rotary rectifier, an electric network, and a two-way converter; the damper system comprises a damping winding, a two-way converter, and an electric network; wherein, the exciter is connected to the generator rotor, the excitation controller is connected to the stator winding of the exciter, the rotor winding of the exciter is connected to the generator rotor winding via the rotary rectifier, the excitation controller is connected to the electric network, the electric network is connected to the two-way converter, and the two-way converter is connected to the generator stator winding; the damping winding is mounted on the generator rotor. At low speeds, the generator can operate in electrodynamic mode, so that the difficulty in generator startup is settled. During normal operation, the generator can operate at variable speeds at constant frequency.
Owner:GUANGZHOU YATU NEW ENERGY TECH
Flying-wing aircraft joined frying wing configuration structure
PendingCN106741947AStrong control abilityGood static stabilityAircraft componentsAll-wing aircraftIsosceles trapezoidWing configuration
The invention discloses a flying-wing aircraft joined frying wing configuration structure which comprises a front wing, a jointed wing and a back wing, wherein the front wing is a high-span-chord-ratio backswept wing; the wingtips on both sides of the front wing are connected with the cambered jointed wing bottom; the top of the jointed wing is connected with wingtips on both sides of the back wing; the front wing, jointed wing and back wing are connected end to end to constitute an isosceles-trapezoid frame structure; the back wing is positioned above the front wing; the back wing comprises a back wing unswept airfoil in the middle and back wing sweptforward wings which are connected in a bilateral symmetry way; the extended surface of the tail of the back end of the front wing is symmetrically provided with front wing control blades; the extended surface of the tail of the back end of the back swept forward wing is provided with a back wing swept forward wing control blade; and the extended surface of the tail of the back end of the back wing unswept airfoil is provided with a back wing unswept airfoil control blade. The joined frying wing configuration structure has the advantages of high controllability, high static stability and favorable maneuvering performance, and solves the problem of control of the flying-wing aircraft.
Owner:杨宇腾
Fixed-wing aircraft with increased static stability
InactiveUS20180305019A1Limit wastage of powerGood static stabilityInfluencers by generating vorticesUnmanned aerial vehiclesLeading edgeFlight vehicle
The invention relates to an aircraft having at least one wing (5) including, at each end thereof, a fin (6) forming an angle of between 0° and 45° relative to the vertical. According to the invention, each fin (6) has a leading edge (7) that includes at least one slot (8) provided along said leading edge (7) and oriented so as to cause an air flow to flow via said leading edge (7) from an outer surface (6a) of the fin (6) to an inner surface (6b).
Owner:DANIELSON AIRCRAFT SYST
Static pressure air-float guide rail based on double-side symmetrical damp
InactiveCN101373146AClean and pollution-free rigidityHigh viscosityMeasurement apparatus componentsStep responseMotion direction
A static pressured air-float guide rail based on bilateral symmetric damping belongs to the technical field of the precision instrument and measurement. In view of the characteristics of small driving force and large inertia of the air-float guide rail, and according to the properties of step response and shock response of a closed loop control system of the guide rail, a two-way viscous damper is introduced to the system to constitute a part for rate feedback, so that the shortage of damping effect of a differential parameter in a PID controller is relieved, thus increasing the damping ratio of the system, reducing movement over-control, and eliminating proper vibrations caused by random disturbance. Two viscous dampers with the same parameter are symmetrically arranged at the two ends of an air-float cover to form a two-way viscous damper; the intensity of the damping force is proportional to the speed of the air-float cover; the direction of the damping force is aligned with the movement direction of the air-float cover; and the damping coefficient is accurate and adjustable, so that the movement over-control of the guide rail and the proper vibration in the movement direction after positioning are reduced, and the positioning precision and static stability of the guide rail are increased by about one order of magnitude.
Owner:HARBIN INST OF TECH
Lithium/polyparrole secondary button cell and its preparation method
InactiveCN1280940CImprove discharge capacityImprove Coulombic efficiencyFinal product manufactureSecondary cellsComposite filmPolypyrrole
The invention relates to a lithium / polypyrrole secondary button battery and a preparation method thereof, belonging to a lithium / polymer secondary button battery using polypyrrole / silicon dioxide or carbon black nanocomposite materials and the preparation technology thereof. In order to improve the performance of the secondary battery and meet the needs of the society, the present invention provides a novel secondary button battery. It is a secondary button battery mainly composed of a positive electrode sheet coated with a positive electrode coating material containing polypyrrole / silicon dioxide or carbon black nanocomposite material, a negative electrode lithium sheet, a three-layer microporous composite membrane and an electrolyte. Its assembly is in the argon glove box, put the lithium sheet in the negative electrode shell, lay the diaphragm, and drop the electrolyte; then place the prepared positive electrode sheet on the diaphragm, press the gasket, and put the spring sheet , buckle the positive electrode shell, and seal the battery on a press to make a button battery. The battery has high discharge capacity, coulombic efficiency and cycle life, and good static stability. The invention has simple process and is easy for industrialized production, and adds new varieties to the lithium / polymer secondary battery.
Owner:HEBEI UNIV OF TECH
Collagen fiber stuffing product and processing method thereof
ActiveCN100351167CGood static stabilityImprove featuresMonocomponent protein artificial filamentUpholstery fillingTextile fiberPolymer science
The invention provides a collagen fiber stuffing product which comprises 50%-100% collagen fiber in the stuffing and its Process for preparing. The said stuffing is oakum stuffing mixed collagen fiber deliberating from animal hide with at least another textile fiber; or materials stuffing arise from teasing, bedding web and modeling. The stuffing product in the invention is provided with advantages of well puffy, well rebound, well warming, flameproof and sound absorbing which the current stuffing can not get because it uses collagen fiber as main stuffing. The stuffing produced in the process provided in the invention has no peculiar smell, without putrefaction, without mouldy, and can be used in practice. The product is low cost and settles the problem of leftover bits and pieces of industrial material, so it is environment friendly.
Owner:GUANGZHOU WUYUAN NEW MATERIAL CO LTD
Modified dual-component road crack pouring adhesive filled with needle-like wollastonite with high length-to-diameter ratio
The invention discloses a modified dual-component road crack pouring adhesive filled with needle-like wollastonite with a high length-to-diameter ratio. The modified dual-component road crack pouring adhesive comprises the following raw materials in parts by weight: 100 parts of compound mixed base glue, 1-20 parts of needle-like wollastonite with high length-to-diameter ratio, 10-50 parts of a reinforcing filler, 2-5 parts of a coloring agent, 10-60 parts of a plasticizer, 0.1-1.5 parts of a tackifier, 0.1-0.5 part of a catalyst, 0.5-6 parts of a crosslinking agent and 0.1-1.5 parts of a chain extender, wherein the needle-like wollastonite with the high length-to-diameter ratio is the needle-like wollastonite of which the length-to-diameter ratio is greater than 20:1. The needle-like wollastonite with the high length-to-diameter ratio is added to the formula, so that the crack pouring adhesive has better static stability, inorganic filler sedimentation in preparation, storage and transportation of the adhesive can be effectively avoided, the stability and the storage time of the crack pouring adhesive are improved, the thixotropy of the crack pouring adhesive is increased by ordered arrangement of the needle-like wollastonite with the high length-to-diameter ratio under the shearing action, and reduction of the sizing difficulty of the crack pouring adhesive and improvement of the sizing effect are facilitated.
Owner:JIANGSU PROVINCIAL COMM PLANNING & DESIGN INST
A kind of carbon fiber water-soluble epoxy resin sizing agent
The invention discloses a carbon fiber water-soluble epoxy resin sizing agent and a preparation method thereof. The main components of the sizing agent are main size and deionized water, and the mass ratio of main size to deionized water is 50~80:20~50. The main slurry is composed of modified novolac epoxy resin and allyl polyoxyethylene ether (AEPH), and the mass ratio of the two is 60~90:10~40. To prepare the sizing agent, first react the novolac epoxy resin with diethanolamine to obtain a water-soluble novolac epoxy resin; then mix the water-soluble resin and AEPH in proportion, and dilute it to a certain concentration with deionized water to obtain the sizing agent. The sizing agent has good stability, low cost, no environmental pollution and simple preparation method. The addition of flexible molecule AEPH endows carbon fibers with good post-processing properties. Experiments show that after the carbon fiber is coated with the appropriate sizing agent, the post-processing performance is obviously improved; the performance of the carbon fiber epoxy resin composite material is improved.
Owner:UNIV OF JINAN
Who we serve
- R&D Engineer
- R&D Manager
- IP Professional
Why Patsnap Eureka
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com