Patents
Literature
Eureka-AI is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Eureka AI

593 results about "Interaction forces" patented technology

Interaction Forces. Identifying Interaction Forces Forces always come in pairs. An interaction pair is two forces that are in opposite directions and have equal magnitude. Sometimes, this is called an action-reaction pair of forces.

Method for preparing graphene through large-scale aqueous phase

The invention provides a method for preparing graphene through a large-scale aqueous phase. According to the method, graphite serves as a raw material. The method comprises the following steps: intercalating the graphite by adopting an intercalator, so that interlayer spacing between graphene sheet layers is enlarged, and the interaction force between the layers is weakened; and directly treating the intercalated graphite through ultrasonic waves, stripping and uniformly dispersing the graphite in an alkaline aqueous solution with the pH value of 10-14, wherein the content of graphene in the dispersion can be over 100mg/mL (about 10 weight percent of graphene), the content of single-layer graphene in the aqueous phase dispersion is more than 90 percent, the equivalent diameter of the graphene sheet layers can be over 1-10 microns, and a graphene film formed by filtering has a complete lattice structure and high electric conductivity. The prepared high-concentration aqueous phase graphene paste can be stored for a long time and is convenient to transport and use. The method is simple in process flow, high in production efficiency, low in energy consumption and low in cost, a commercially available low-cost reagent is adopted, the reagent is easy to recover, and the production process is environment-friendly and pollution-free.
Owner:安徽百特新材料科技有限公司

Method for preparing large-size high-quality graphene with controllable number of layers

The invention discloses a method for preparing large-size high-quality graphene with controllable number of layers, wherein graphite powder or flake graphite is mainly adopted as a raw material. The method specifically comprises the steps of intercalating the graphite raw material by virtue of an intercalating agent to initially weaken the intercalation interaction force and obtain different orders of graphite intercalation compounds (GICs); soaking the GICs in an appropriate expander, and then under the case that an auxiliary agent is added or not, enabling the intercalation materials to be quickly reacted with the expander to release a gases to obtain highly expanded wormlike graphene aggregate and further to cause the distances among graphene lamellar layers to be increased; and after certain processing, peeling, and then repeatedly centrifuging and dispersing to obtain a graphene dispersion with different numbers of layers. According to the method disclosed by the invention, the intercalation-expansion-peeling process is involved, raw materials are cheap, the reaction process is simple and easily controlled, and the number of layers of graphene is precisely controlled; the obtained graphene lamellar layers have the advantages of few defects, large size, high conductivity, high yield and the like, the large-scale industrial production is easily implemented, and the problems of high cost, low productivity, poor quality, small size, uncontrollable number of layers and the like in an existing graphene preparation technology are solved.
Owner:安徽百特新材料科技有限公司

Current collector and preparation method thereof

The invention provides a current collector and a preparation method thereof. The current collector comprises a current collector foil and at least one surface of the current collector foil is coated with coating layers containing graphene and a binder. The preparation method comprises the following steps of dispersing graphene and the binder in a solvent to obtain slurry, coating the slurry on at least one surface of the current collector foil and drying. Graphene of the coating layer has a two-dimensional sheet structure and thus the graphene forms a uniform and compact coating on the surface of the current collector foil so that a contact area of the graphene and the surface of the current collector is greatly improved; a conductive contact between an active material and the current collector is improved; the interface resistance of the current collector and the active material is effectively reduced; and internal resistance of a cell is reduced. Contact areas of graphene layers paved on the surface of the current collector and contact areas of the graphene layers and the current collector are large and thus interactional forces are strong; falling off is difficult; adhesive forces are strong; separation of the active material and the current collector is avoided in charging and discharging; and internal resistance reduction is promoted.
Owner:NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI

Experimental device and method for simulating extension influence of hydraulic fracturing cracks and natural cracks

ActiveCN107701160ADisadvantages such as high cost of customer service experiments and limited accuracySimple structureSurveyFluid removalHydraulic fracturingRock sample
The invention relates to an experimental device and method for simulating the extension influence of hydraulic fracturing cracks and natural cracks. Fracturing pipe columns are simulated through steelpipes, planar rock samples are formed through pouring and cured, and then rock samples with random spots are prepared; then the samples are placed into adjustable hydraulic fracturing cavities, unequal ground stress is applied to the two sides of the samples, and then fracturing liquid is injected through the fracturing pipe columns; and meanwhile a high-speed camera is utilized to shoot the crack extension condition in the hydraulic fracturing process, the rock body deformation condition in the hydraulic fracturing process is collected through a deformeter, and the pumping-in pressure and strain change are detected. According to the experimental device and method for simulating the extension influence of the hydraulic fracturing cracks and the natural cracks, the interplaying mechanicalrelation between the hydraulic fracturing cracks and the natural cracks can be intuitively analyzed, the distribution problem after a flow makes contact with the natural cracks can be accurately researched, and meanwhile the complex mechanical behavior such as cracking rules of hydraulic fracturing, rock body deformation caused by hydraulic crack extension and opening, re-starting or dislocation of the natural cracks at different strength is intuitively observed.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)

Lower limb rehabilitation training robot system based on virtual reality

The invention discloses a lower limb rehabilitation training robot system based on virtual reality, which comprises a virtual interaction scene module, a physiological parameter acquisition module, a man-machine interaction module, a control module and a lower limb rehabilitation training robot, wherein the virtual interaction scene module simulates motion of a virtual person in a virtual scene and calculates an interaction force between the virtual person and a virtual environment; the man-machine interaction module displays and transmits physiological parameters of a patient, a motion state of the lower limb rehabilitation training robot and the acting forces of the patient in all directions to the control module; the control module generates and issues a control instruction; and the lower limb rehabilitation training robot is responsible for force feedback output under an active rehabilitation condition and traction of the patient for rehabilitation training under a passive rehabilitation training condition. According to the system, simpler virtual scene interaction is achieved by establishing a virtual person model; a real-time and friendly virtual scene interaction system with feedback of a visual sense, an auditory sense and a touch sense is provided for the rehabilitation training robot; and the patient is encouraged to actively perform rehabilitation training.
Owner:SOUTHEAST UNIV

Ball type motor with three-dimensional topology magnetic pole distribution structure

The invention discloses a ball type motor with a three-dimensional topology magnetic pole distribution structure The ball type motor comprises an outer rotor (1), an outer stator (2), a ball bearing (3), a base (4), an inner rotor (5) and an inner stator (6), wherein the rotor and the stator are sleeved with each other; the ball bearing (3) is installed in the inner stator (6); the inner rotor (5) is sleeved on the external part of the inner stator (6); the outer stator (2) is sleeved on the external part of the inner rotor (5); and the outer rotor (1) is sleeved on the external part of the outer stator (2). The electromagnetic force driving is adopted for the ball type motor disclosed by the invention, besides magnetic poles and coil magnetic poles are distributed along a spherical surface, and also can be distributed along the radial direction, thus the magnetic field intensity of a coil magnetic pole region is increased greatly, simultaneously the interaction force between the magnetic poles is improved, not only can the continuous rotation space with spatial three degrees of freedom of the ball motor rotor can be realized, but also the output torque, especially the tilting moment, of the ball motor is improved effectively.
Owner:BEIHANG UNIV

Flexible snakelike arm with variable rigidity

The invention discloses a flexible snakelike arm with variable rigidity. The flexible snakelike arm with the variable rigidity comprises a plurality of rigid-flexible units which are detachably connected into a whole; the rigid flexible units comprise rigid end plates, soft pneumatic artificial muscle groups, ultra-elastic multi-rod mechanisms and limiting partition plates; each ultra-elastic multi-rod mechanism comprises a plurality of ultra-elastic rods, one end of each ultra-elastic rod is assembled on one end plate, and the other end penetrates through the other end plate and then extend into the ultra-elastic rod of the adjacent rigid-flexible unit; the soft pneumatic artificial muscle groups comprise a plurality of pneumatic artificial muscles which are arranged between every two endplates and outside the ultra-elastic multi-rod mechanisms; the limiting partition plates are arranged outside the ultra-elastic multi-rod mechanisms in a sleeving mode; and the two adjacent rigid-flexible units are detachably connected through the end plates. The soft pneumatic artificial muscle groups are utilized to provide flexible bending motion capability, the plurality of ultra-elastic rodsplay a motion guiding role, and through the interaction force formed by the pneumatic artificial muscles and the super-elastic rods, the rigidity of the snake-shaped arm is variable and controllableso that the snakelike arm can reach different positions, and the motion precision of the operation end of the snakelike arm is thus improved.
Owner:CENT SOUTH UNIV

Caliper method, system, and apparatus

A caliper atomic force microscope (AFM) comprises two AFM probes (each comprised of an oscillator and an attached tip) that operate on a sample in a coordinated manner. The coordinated operation of the AFM probes may be spatially or temporally coordinated. The result of the coordinated operation may be an image of the sample or a dimensional measurement of an unknown sample. The probes of the caliper AFM may be tilted, or the tips may be tilted at a non-orthogonal angle with respect to the probes, so as to enable the tips to access vertical sample surfaces or to enable the tips to touch each other. The tip shapes may include conical, boot-shaped, cylindrical, or spherical and materials from which the tips are fabricated may include silicon or carbon nanotubes. The oscillators may be beveled to allow the tips to operate in close proximity or in contact without interference of the oscillators. The disclosure of the present invention is discussed in terms of an atomic force (van der Waalls) interaction. Other interaction forces are contemplated, such as electrostatic force, magnetic force, and tunneling current. The caliper AFM may be calibrated with the help of a sample with known dimensions or by touching the probe tips. The tip-to-tip calibration enables absolute measurements without the need for a reference artifact, and it enables in-line calibration that may be performed during the measurement process.
Owner:XIDEX CORP

Fluorine-containing resin-based copper-clad plate with high dielectric constant and preparation method of plate

The invention belongs to the field of communication materials, and particularly relates to a fluorine-containing resin-based copper-clad plate with a high dielectric constant and a preparation methodof the plate. According to the plate, surfaces of inorganic fillers are collectively modified by coupling agents and parts of fluorine-containing polymers, so that interaction force among the inorganic fillers and fluorine-containing resin substrates are higher, the loading amount of the inorganic fillers in the fluorine-containing resin substrates is high (>=50wt%), the compatibility among the inorganic fillers and the substrates is good, the bonding power among the inorganic fillers and the substrates is high, dispersion performances among the inorganic fillers and the substrates are better,so that a prepared fluorine-containing resin-based dielectric slice is uniform and good in dielectric property, the dielectric constant is larger than or equal to 5.0, and dielectric loss is only smaller than or equal to 0.002. The fluorine-containing resin-based copper-clad plate has a certain mechanical strength, excellent heat stability and high copper foil peel strength and can meet various performance requirements for diversified and complicated functions of the copper-clad plates and high-density and multilayer circuit arrangement and the like in the field of high-frequency and high-speed communication.
Owner:CHANGZHOU ZHONGYING SCI & TECH CO LTD

Blocky bionic material, method for manufacturing same and application of blocky bionic material

ActiveCN105079887AAchieve light weight and high strengthRealize that the prepared bulk biomimetic material has light weight and high strengthSynthetic resin layered productsProsthesisExperimental methodsStrong interaction
The invention provides a blocky bionic material, a method for manufacturing the same and application of the blocky bionic material. The method includes mixing platy or fibrous inorganic matrix materials and first polymers with one another and then assembling the platy or fibrous inorganic matrix materials and the first polymers to obtain bionic structure films; carrying out hot-pressing on the multiple layers of bionic structure films by the aid of second polymers to obtain the three-dimensional blocky bionic material. The second polymers are used as adhesion layers between the multiple layers of bionic structure films. The blocky bionic material, the method and the application have the advantages that the different inorganic matrix materials, the different first polymers and the different second polymers can be selected, high interaction force can be generated among various raw materials, and accordingly the blocky bionic material manufactured by the aid of the method is light and is high in strength; complicated experimental equipment can be omitted in manufacturing procedures, the experimental method is simple and feasible and is good in economical efficiency, the time and labor can be saved, and industrial production can be facilitated.
Owner:UNIV OF SCI & TECH OF CHINA

System for assisting stomatognathic system to carry out rehabilitation training and method for recording motion parameters

ActiveCN102499780ARelieve painShort recovery periodDentistryNerve muscleElectrostimulators
The invention discloses a system for assisting a stomatognathic system to carry out rehabilitation training and a method for recording motion parameters. The method comprises the following step of, firstly, recording the motion parameters of a subject, including a motion track, a motion velocity and an acceleration of a mandible, an interaction force of the mandible and a bracket as well as an electromyogram signal of facial muscles of the subject; secondly, sending the recorded motion parameters to a comprehensive processing device, and analyzing and processing the recorded motion parameters; and thirdly, displaying the recorded motion parameters, and supplying visual feedback information to the subject so as to regulate motion of a temporomandibular joint; or judging the deviation of the motion parameters and set values of the mandible of the subject by the system, and carrying out mechanical auxiliary rectificative training on the subject; or judging motion deviation values of the mandible of the subject by the system, and helping the subject to train related muscle groups and recover normal mandibular motion with the excitation of nerve muscles by an electrostimulator. With the adoption of the system, the functions are diversified, the operation is convenient, and the stomatognathic system can be assisted to recover the normal motion functions.
Owner:SUN YAT SEN UNIV

System for testing linear motor characteristics

ActiveCN102096042AImplement bidirectional testingEliminate load force fluctuationsAsynchronous induction clutches/brakesDynamo-electric machine testingElectric machineSnubber
The invention provides a system for testing linear motor characteristics with linear linear device, which belongs to the technical field of motors and solves the problems that the conventional system for testing the linear motor characteristics can be used for testing in a single direction and a loading force cannot be changed continuously. A stator of the motor and a stator of a linear electromagnetic damper are simultaneously arranged on a system platform; the power output end of a motor driver is connected with the armature winding input end of a tested motor; the armature winding output end of the tested motor is connected with the current input end and the voltage input end of a power analyzer respectively; a force sensor is used for detecting a mutual acting force between a rotor of the tested motor and a rotor of the linear electromagnetic damper; the force signal output end of the force sensor is connected with the force signal input end of the power analyzer; a speed sensor is used for detecting the speed of the rotor of the motor or the stator of the damper; the speed signal output end of the speed sensor is connected with the speed signal input end of the power analyzer; and the linear electromagnetic damper consists of a primary, a secondary and an excitation controller. The invention is used as the test system of the linear motor.
Owner:HARBIN INST OF TECH

Compound catalyst with nanometer core-shell structure and preparing method of compound catalyst

The invention discloses a compound catalyst with a nanometer core-shell structure and a preparing method of the compound catalyst. The compound catalyst comprises metallic oxide nanometer particles, the metallic oxide nanometer particles are coated with a carbon layer, and multiple precious metal nanometer particles are uniformly distributed outside the carbon layer, wherein the particle diameterof the metallic oxide nanometer particles is 20-50 nm, the particle diameter of the precious metal nanometer particles is 2-10 nm, and the thickness of the carbon layer is 2-10 nm. The compound catalyst can prevent aggregation of the precious metal nanometer particles, and change the electronic state and adsorption properties of the surface of the precious metal nanometer particles, and then the catalysis performance is improved; meanwhile, the carbon layer can strengthen the mutual acting force among the precious metal nanometer particles and the metallic oxide nanometer particles. Precursorslike chlorizated salts and nitrate are adopted, metallo-organic compounds needed for preparation of a catalyst of a specific structure are omitted, and the preparing cost is lowered; meanwhile, templates are not needed in the preparing process, and the operation is simple and easy to control.
Owner:XI AN JIAOTONG UNIV

Transitional metal phosphide-carbon composite material as well as preparation method and application thereof

The invention provides a transitional metal phosphide-carbon composite material, which belongs to the field of electrochemical energy materials. A carbon precursor is used as a carbon source and a nitrogen source, the transitional metal ions are uniformly dispersed on a carbon precursor substrate by virtue of a complexing effect of the transitional metal ions and the carbon precursor, and the single-dispersed transitional metal phosphide nano particles are in-situ synthesized by virtue of the phosphorization process. The single-dispersed transitional metal phosphide nano particles are embeddedinto the carbon material substrate, so that the volume expansion of the phosphide particles in the charging-discharging process can be alleviated, the cycling stability of the material can be improved, the electric conductivity of the composite material can also be increased, the reaction dynamics process of an electrode is accelerated, the heteroatom-doped carbon is combined with the transitional metal phosphide by virtue of a covalent bond, so that the interaction of the heteroatom-doped carbon and the transitional metal phosphide is improved, the clustering problem of the phosphide particles in the charging and discharging process can be solved, and the synergistic effect between the carbon and phosphide improves the specific capacity and rate capability of the composite material.
Owner:YANSHAN UNIV

Long-distance autonomous wave glider without power consumption

The invention relates to the field of wave gliders, and aims to provide a long-distance autonomous wave glider without power consumption. The long-distance autonomous wave glider without power consumption comprises a floating body, flexible cables and a power device, wherein the floating body comprises a floating body connecting plate, a first buoy sealing cylinder, a second buoy sealing cylinder, a GPS (Global Positioning System), a single chip microcomputer, a solar cell panel, an accumulator cell and a controller; the power device comprises a side plate, a fixed screw rod, wing pieces, a stepper motor and a rubber piece; two flexible cables, consisting of a first flexible cable and a second flexible cable, are arranged; the first buoy sealing cylinder is connected with the side plate at the corresponding side of the power device through the first flexible cable; the second buoy sealing cylinder is connected with the side plate at the corresponding side of the power device through the second flexible cable. According to the long-distance autonomous wave glider without the power consumption, the whole glider is driven forward through interaction force between the wing pieces of the wave glider and water flow; electric energy produced by the solar cell panel is only used for regulating the turning of the wave glider, so that the cruising ability of the glider is strong.
Owner:ZHEJIANG UNIV

Viscosity-reducing type polycarboxylic acid water reducing agent for high-strength concrete and preparation method of viscosity-reducing type polycarboxylic acid water reducing agent

The invention provides a viscosity-reducing type polycarboxylic acid water reducing agent for high-strength concrete, and belongs to the technical field of water reducing agents. The viscosity-reducing type polycarboxylic acid water reducing agent has the following general formula as shown in the description, wherein R' is selected from CH3 or H; R1 is selected from CH2CH2 or CH3CHCH2; R2 is small-molecule alcohol or alcohol amine with a hydroxyl group; a, b, c, m, n and g are all integers; a, b and c are taken from 1 to 50; m is taken from 5 to 150; n is taken from 20 to 110; and g is taken from 1 to 12. According to the viscosity-reducing type polycarboxylic acid water reducing agent for high-strength concrete, maleic anhydride, polyethylene glycol or polypropylene glycol, the small-molecule alcohol or alcohol amine and a phosphorylating reagent are adopted to prepare maleic anhydride modified phosphate ester for polycarboxylic acid water reducing agent synthesis, so that a phosphategroup of a specific structure is introduced into a molecular structure of the polycarboxylic acid to increase the polymer adsorption capacity and lower an LHB value; an effect of reducing the viscosity of the concrete is achieved by improving the capacity of a surfactant of the water reducing agent and weakening the interactivity between adsorption interfaces. Meanwhile, a functional monomer preparation process can be simplified and the production cycle can be shortened; and no expensive monomers are needed, and the production cost is reduced.
Owner:湖北西建新材料科技有限公司 +3
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products