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32results about How to "Effectively disperse stress" patented technology
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Display panel, manufacturing method thereof and display device
ActiveCN109103218AImprove adhesionAvoid breakingSolid-state devicesSemiconductor devicesDrop impactDisplay device
The invention relates to a display panel, comprising a pixel definition layer, a cathode and a filling structure. The cathode is overlaid on the pixel definition layer; a plurality of grooves are formed on the pixel definition layer, and the filling structure is formed of an inorganic material; the filling structure is located within the recess and is configured to contact the cathode. The pixel definition layer is provided with grooves and filled with a filling structure formed of an inorganic material. On the one hand, the grooves and the filling structure can effectively disperse stress when the display panel is impacted or bent; on the other hand, the filling structure is formed of an inorganic material, which has better adhesion with the pixel definition layer and the cathode, and theadhesion of the cathode is improved compared with the prior art design in which the cathode relies on the Van der Waals force adhesion with the pixel definition layer. As such, the fracture of the cathode or separation from the organic light emit layer is effectively avoid, and the reliability of the bending resistance and the drop impact strength of the OLED display panel is effectively improved. Also provided are a method for manufacturing a display panel and a display device.
Owner:KUNSHAN GO VISIONOX OPTO ELECTRONICS CO LTD
Spinal fixation device
ActiveCN104856748AGuaranteed compressive strengthGood dispersionInternal osteosythesisBone platesSpinal columnBone healing
The invention provides a spinal fixation device, and belongs to orthopaedic implants. The spinal fixation device comprises a bone lamella and screws, lamella holes are formed in the upper surface and the lower surface of the bone lamella in a penetrating mode, and the screws can be matched with the lamella holes. When the spinal fixation device is used, the screws penetrate through the lamella holes to fix the bone lamella on the bone, operation is easy, fixing is firm, and bone healing is facilitated.
Owner:BEIJING NATON TECH GRP CO LTD +2
High-frequency connector
ActiveCN104600506AEffectively disperse stressAvoid deformationCoupling device detailsEngineeringMechanical engineering
The invention discloses a high-frequency connector. The high-frequency connector comprises an insulating body, a contact terminal, a grounding lug and a shielding case. The insulating body comprises a base and a tongue plate, the front end surface of the tongue plate is recessed backwards to form an inserting slot, and the contact terminal is exposed inside the inserting slot; the grounding lug is arranged corresponding to the front part of the inserting slot and on the front side of the contact terminal; the ground lug comprises a base plate part, a plurality of first spring pieces, a plurality of second spring pieces and a plurality contact protrusions, wherein the first spring pieces, the second spring pieces and the contact protrusions are integrally formed from the base plate part through stamping; every first spring piece is provided with a first elastic butting part, which is protruded towards the inserting slot and exposed inside the inserting slot,, and the first spring piece is provided with a second yielding through slot communicating the upper surface and the lower surface of the base plate part; every second spring piece is suspended inside the corresponding second yielding through slot; the contact protrusions are formed between every two neighboring two first spring pieces; the shielding case wraps the outer surface of the tongue plate; the second spring pieces and the contact protrusions are pressed by the shielding case and electrically abut against the inner wall of the shielding case to effectively disperse stress of the grounding lug during insertion and extraction and further to avoid deformation of the first spring pieces due to overlarge stress.
Owner:DONGGUAN TECONN ELECTRONICS TECH CO LTD
A spinal fixation device
ActiveCN104856748BGuaranteed compressive strengthGood dispersionInternal osteosythesisBone platesIliac screwBone healing
Owner:BEIJING NATON TECH GRP CO LTD +2
Display substrate, manufacturing method of display substrate and display device
InactiveCN104035240AAvoid disconnectionEffectively disperse stressSolid-state devicesSemiconductor/solid-state device manufacturingDisplay deviceComputer science
The invention discloses a display substrate, a manufacturing method of the display substrate and a display device. The display substrate comprises a substrate base plate, a photo spacer placed on the upper portion of the substrate base plate, and an electrode layer placed on the upper portion of the photo spacer. The photo spacer comprises at least two layers of stepped structures. According to the technical scheme of the display substrate, the manufacturing method of the display substrate and the display device, the photo spacer comprises at least two layers of stepped structures, so that the stress concentrated on the electrode layer placed on the upper portion of the photo spacer is effectively dispersed, and therefore the wire breaking phenomenon of the electrode layer placed on the upper portion of the photo spacer is avoided.
Owner:BOE TECH GRP CO LTD
Railway polymer anti-creeping strut material and railway polymer anti-creeping strut
The invention belongs to the technical field of railway accessories, and particularly relates to a railway polymer anti-creeping strut material and a railway polymer anti-creeping strut which are used for solving the technical problems that the materials in the prior art are low in properties and the like. The anti-creeping strut material comprises the following compositions in percentage by weight: 55%-65% of rigid polyethylene compound, 1.5%-2.5% of stabilizer, 15%-25% of reinforcing toughing agent, 8%-12% of impact modifier, 4%-6% of processing aids and 2.5%-3.5% of lubricant. Compared with the prior art, the railway polymer anti-creeping strut material and the railway polymer anti-creeping strut have the advantages of being reasonable to combine, easy to process and manufacture, low in production cost, good in mechanical property and long in service life.
Owner:姚将安
Preparation method of diamond-coated dental implant
PendingCN111839770ASmooth implantationEffectively disperse stressDental implantsOsseointegrationDentistry
The invention discloses a diamond-coated dental implant. The diamond coated dental implant includes: an implant including an upper layer portion, a middle layer portion and a lower layer portion, a base table of which the bottom end is provided with a screw rod, wherein the screw rod is spirally assembled in a groove body preset in the implant, and at least two clamping columns which are assembledin column grooves preset in the surface of the lower layer part in an inserting manner, wherein one end of each clamping column extends into the groove body. The technical key points are as follows that: the diamond film layer is designed on the surface of the implant, so that the hardness of the implant can be remarkably improved, the implant can be screwed in, the surface friction force is reduced, the screwing-in process is smoother, the damage to tissues during screwing-in is reduced, cell protein adhesion can be remarkably promoted, and the osseointegration is enhanced at the same time,the clamping column is designed on the surface of the implant, and the clamping column can be extruded in the process of mounting the base station, so that the whole implant has a barb function, and the stability of the whole implant after being assembled is remarkably improved.
Owner:苏州卡彭新材料科技有限公司
Butterfly door hinge and vehicle
ActiveCN114673420AEffectively disperse stressImprove riding performancePin hingesControl theoryCar door
The invention provides a butterfly door hinge and a vehicle, and particularly relates to the field of vehicles. The butterfly door hinge comprises a vehicle door mounting seat, a vehicle body mounting seat, a first hinge swing arm and a second hinge swing arm, one end of the first hinge swing arm is hinged to the vehicle door mounting seat along a first axis, and the other end of the first hinge swing arm is hinged to the vehicle body mounting seat along a second axis; one end of the second hinge swing arm is hinged to the vehicle door mounting seat along a third axis, and the other end of the second hinge swing arm is hinged to the vehicle body mounting seat along a fourth axis; the extension lines of the first axis, the second axis, the third axis and the fourth axis intersect at a virtual intersection point. The hinge stress can be effectively dispersed, larger torque can be borne and transmitted, the smoothness of the hinge is improved, and the failure rate is reduced; in addition, the butterfly door hinge is simple in structure and convenient to assemble.
Owner:ZHEJIANG ZEEKR INTELLIGENT TECH CO LTD +1
Full steel radial brand-new tire with heavy duty tire bead structure
PendingCN108215671AEffectively disperse stressAvoid early damagePneumatic tyre reinforcementsTyre beadsTire beadHeavy duty
The invention discloses a full steel radial brand-new tire with a heavy duty tire bead structure. The tire comprises a tire bead structure, which comprises a triangular rubber core. A carcass cord layer is wrapped on the rubber core. The external part, which is arranged on the end face direction of the tire bead structure, of the carcass cord is wrapped by an external opening reinforcing cord. Thesurface of the part, which is arranged on the inner side of the tire bead structure, is provided with an internal opening reinforcing cord. The internal side direction of the tire bead structure is also provided with an internal fibrous cord covered on the external opening reinforcing cord and the internal opening reinforcing cord, and the external side direction of the tire bead structure is also provided with an external fibrous cord covered on the external opening reinforcing cord. The structure has the advantages that through the application of internal and external one layer or multilayer fibrous cords and internal and external two opening reinforcing cords, the end points of tire beads are arranged between the external opening reinforcing cord and the internal opening reinforcing cord, the stress on the tire bead ends is effectively dispersed, and the damage of the carcass ends in the early stage is avoided.
Owner:SHANDONG LINGLONG TIRE
OLED display panel and display device having the same
ActiveCN110120465BAvoid crackingImprove package reliabilityStatic indicating devicesDigital data processing detailsDisplay deviceEngineering
Owner:BOE TECH GRP CO LTD +1
Fan, motor and its shell
ActiveCN101102063BEffectively disperse stressTo achieve the purpose of strengthening the structurePump componentsPump installationsConvex structureEngineering
The invention is concerned with the shell, includes the top and the wall. It is: the top connects with the edge of the wall; the top is with several concavo convex structures; the concavo convex structure ring set along the central axis of the top in order to increase the stress area of the top. The invention is also concerned with the shell of the motor and fan. The invention not only add fortifier such as rib, but also achieve reinforcement structure by few material, reduce the making cost.
Owner:DELTA ELECTRONICS INC
Thermal processing method for improving elongation of heat-treatable aluminum alloy welded joints
ActiveCN106001863BHigh tensile strengthHigh elongationArc welding apparatusWelding/soldering/cutting articlesFusion weldingHelium
Owner:CAPITAL AEROSPACE MACHINERY +1
Assembly type linear plate spring for refrigeration compressor
ActiveCN110439945AAvoid stress concentrationMeets linear stiffness load requirementsSprings/dampers design characteristicsLow internal friction springsRefrigeration compressorLinear compressor
The invention provides an assembly type linear plate spring for a refrigeration compressor. The assembly type linear plate spring comprises an outer fixing gasket for installation locating, an inner fixing gasket and at least two same-structure cylindrical spring arms. A shaft hole in a piston shaft installed on the refrigeration compressor is formed in the center of the inner fixing gasket. No less than two first spring arm installation grooves are formed in the periphery of the inner fixing gasket, are evenly distributed and are used for installing one ends of the cylindrical spring arms. The outer fixing gasket is provided with an installation hole fixed to a base of the refrigeration compressor. No less than two second spring arm installation grooves are formed in the periphery of theouter fixing gasket, are evenly distributed and are used for installing the other ends of the cylindrical spring arms. The assembly type linear plate spring for the refrigeration compressor is appliedto the refrigeration compressor and can be disassembled and assembled freely, the characteristic curve of spring force-deformation is linear, the axial linear force need of the linear compressor piston shaft is met, the spring arms can effectively disperse stress, life is prolonged effectively, and overall reliability of the compressor is improved.
Owner:LIAONING TECHNICAL UNIVERSITY
Split type occipital plate
The invention discloses a split type occipital plate which comprises plate bodies, wherein the lower part of each plate body is an attaching surface used for being attached to an occipital bone of a human body; one side of each plate body is provided with a locking hole, and the other side of each plate body is provided with a stick-passing hole; the other side of each plate body is also provided with a stick-locking hole, and the stick-passing holes are communicated with the stick-locking holes; and the locking holes are through holes passing through the attaching surfaces. According to the invention, 2-4 separately-processed occipital plate bodies are adopted and used in pairs, respective orthopedic sticks of the occipital plate bodies used in pairs in the process of fixing orthopedic sticks can be fixed separately and respectively, the fixed position is adjusted conveniently, and the operation is convenient and rapid.
Owner:纳通生物科技(北京)有限公司 +1
A sharp ridge cutting tooth
ActiveCN108487865BEffective incisionEffectively disperse stressDrill bitsConstructionsEngineeringStructural engineering
Owner:KINGDREAM PLC CO +1
Supporting base structure
Owner:MANTALL HEAVY IND
High frequency connector
ActiveCN104600506BEffectively disperse stressAvoid deformationCoupling device detailsEngineeringMechanical engineering
The invention discloses a high-frequency connector. The high-frequency connector comprises an insulating body, a contact terminal, a grounding lug and a shielding case. The insulating body comprises a base and a tongue plate, the front end surface of the tongue plate is recessed backwards to form an inserting slot, and the contact terminal is exposed inside the inserting slot; the grounding lug is arranged corresponding to the front part of the inserting slot and on the front side of the contact terminal; the ground lug comprises a base plate part, a plurality of first spring pieces, a plurality of second spring pieces and a plurality contact protrusions, wherein the first spring pieces, the second spring pieces and the contact protrusions are integrally formed from the base plate part through stamping; every first spring piece is provided with a first elastic butting part, which is protruded towards the inserting slot and exposed inside the inserting slot,, and the first spring piece is provided with a second yielding through slot communicating the upper surface and the lower surface of the base plate part; every second spring piece is suspended inside the corresponding second yielding through slot; the contact protrusions are formed between every two neighboring two first spring pieces; the shielding case wraps the outer surface of the tongue plate; the second spring pieces and the contact protrusions are pressed by the shielding case and electrically abut against the inner wall of the shielding case to effectively disperse stress of the grounding lug during insertion and extraction and further to avoid deformation of the first spring pieces due to overlarge stress.
Owner:DONGGUAN TECONN ELECTRONICS TECH CO LTD
Assembled distal femur tumour type bionic prosthesis containing universal assembly
PendingCN113425465AReduce weightReduce the burden onJoint implantsTissue regenerationEngineeringBiomedical engineering
The invention relates to an assembled distal femur tumour type bionic prosthesis containing a universal assembly, which comprises the following components: a femur assembly, a tibia assembly, a buffering assembly and a universal assembly; the femur assembly comprises a distal femur; the lower end of the distal femur is provided with a first groove and two through holes located at the two ends of the first groove; the tibia assembly comprises a tibia platform; a second groove is formed in the tibia platform; the buffering assembly comprises a liner; the liner is arranged at the upper end of the tibia platform; the universal assembly comprises a universal shaft and a pin shaft; the upper end of the universal shaft is installed in the first groove; the lower end of the universal shaft is installed in the second groove; and the pin shaft is arranged between the two through holes in a penetrating mode and used for connecting the distal femur and the tibia platform together. According to the invention, the integrated universal assembly is added into the distal femur tumour type prosthesis; stress borne by the prosthesis is effectively dispersed; and the service life of the prosthesis is prolonged.
Owner:PEOPLES HOSPITAL PEKING UNIV
Display panel, manufacturing method thereof, and display device
ActiveCN109103218BImprove adhesionAvoid breakingSolid-state devicesSemiconductor devicesDisplay deviceEngineering
Owner:KUNSHAN GO VISIONOX OPTO ELECTRONICS CO LTD
Epitaxial structure of a light emitting diode and its manufacturing method
ActiveCN108847436BImprove crystal qualityImprove luminous efficiencySemiconductor devicesLattice mismatchGallium nitride
The invention discloses an epitaxial structure of an LED and a manufacturing method of the epitaxial structure, and belongs to the technical field of semiconductors. The epitaxial structure comprisesa sapphire substrate, and a composite structure, a gallium nitride buffer layer, a non-doped gallium nitride layer, an N type semiconductor layer, an active layer and a P type semiconductor layer laminated on the sapphire substrate respectively; the composite structure comprises (n+1) first sub layers and n second sub layers, n represents a positive integer, and the (n+1) first sub layers and n second sub layers are laminated alternatively; and each first sub layer is an aluminum nitride layer, and each second sub layer is an alumina layer. The aluminum nitride layers and the alumina layers are laminated alternatively on the alumina sapphire whose main component is alumina, the crystal lattice characteristic is changed from transition from alumina to aluminum nitride to dispersion from oneinterface to the whole composite structure, the influence of abrupt change of a crystal lattice constant is changed, a stress generated by crystal lattice mismatch is dispersed effectively and avoided from being too concentrated, and the crystal quality of an active layer and the like formed subsequently can be improved.
Owner:HC SEMITEK ZHEJIANG CO LTD
A slewing device for an offshore platform crane
A slewer of an ocean platform crane comprises a bearing device, a rotating body and a driving device. The bearing device comprises a supporting ring body and fixing pieces which are installed on the outer side of the supporting ring body. The rotating body comprises an annular sleeve and two supporting arms; the annular sleeve is vertically installed at the top of the supporting ring body; first reinforcing rib plates are arranged between the inner sleeve wall and the outer sleeve wall of the annular sleeve and vertically distributed with an inner sleeve as the axis in a central symmetry mode; the two supporting arms are connected to the two sides of the annular sleeve correspondingly and are parallel to each other; the rear end of each supporting arm is of a triangular column structure; the outer side faces of the two triangular column structures are parallel to each other; and the supporting arms and the annular sleeve are of an integrated structure. The driving device is installed on the outer side of the bottom of the rotating body and used for driving the rotating body to move rotationally with the supporting ring body as a rotating shaft. The slewer of the ocean platform crane can effectively disperse the stress effect and is higher in overall strength and bearing capacity and more balanced and stable in stress.
Owner:KEEN OFFSHORE ENG CO LTD
Intelligent safe high-voltage single-core cable
PendingCN111180117AFirmly connectedEasy to tearPower cables with screens/conductive layersInsulated cablesSteel tubeEngineering
The invention discloses an intelligent safe high-voltage single-core cable, which comprises a conductor wire core. A heat dissipation channel is arranged in the conductor wire core in a hollow mode along the axis; an insulating layer, a metal shielding layer, a longitudinal water blocking buffer layer, an anti-corrosion layer and a sheath layer are sequentially arranged on the outer surface of theconductor wire core from inside to outside; a set of tearing lines are arranged between the anti-corrosion layer and the sheath layer; the conductor wire core is divided into a plurality of sections,the plurality of sections of conductor wire cores are electrically connected end to end in sequence through the safety terminals, each section of conductor wire core is formed by twisting a pluralityof leads with the same specification and a hollow seamless steel tube, and the inner parts of the plurality of sections of seamless steel tubes are connected end to end in sequence to form a heat dissipation channel. Heat dissipation can be assisted by arranging the heat dissipation channel; especially when the local temperature is too high, heat can be rapidly dissipated to reduce the temperature, the conductor wire cores are electrically connected through the safety terminals, are automatically disconnected when the temperature exceeds a set temperature threshold value, and are automatically recovered when the temperature is reduced to the set temperature threshold value, the safety performance is very high, dual protection is achieved, and the service life of the cable is prolonged.
Owner:STATE GRID TIANJIN ELECTRIC POWER +1
Nylon roller, motion door mechanism, vehicle and manufacturing technology
PendingCN111779764AMinor changesSimple structureBearing componentsDoor arrangementAutomotive engineeringManufacturing engineering
The invention provides a nylon roller, a motion door mechanism, a vehicle and a manufacturing technology, and relates to the technical field of rollers. The nylon roller comprises a nylon roller bodyand a bearing. The bearing comprises a bearing inner race and a bearing outer race capable of rotating relative to the bearing inner race. The surface of the side, backing onto the bearing inner race,of the bearing outer race is the bearing outer race face. Knurls are formed on the bearing outer race face. A groove sunken into the bearing inner race is formed in the bearing outer race face. The nylon roller body is connected to the bearing through the bearing outer race. The nylon roller can effectively eliminate the phenomenon that a bearing is disengaged from the nylon roller body due to deformation generated by the load effect.
Owner:南京盛兴茂机械设备制造有限公司
Epitaxial structure of LED and manufacturing method of epitaxial structure
ActiveCN108847436AImproving the effect of sudden changes in lattice constantsDistribute stressSemiconductor devicesGallium nitrideLattice mismatch
The invention discloses an epitaxial structure of an LED and a manufacturing method of the epitaxial structure, and belongs to the technical field of semiconductors. The epitaxial structure comprisesa sapphire substrate, and a composite structure, a gallium nitride buffer layer, a non-doped gallium nitride layer, an N type semiconductor layer, an active layer and a P type semiconductor layer laminated on the sapphire substrate respectively; the composite structure comprises (n+1) first sub layers and n second sub layers, n represents a positive integer, and the (n+1) first sub layers and n second sub layers are laminated alternatively; and each first sub layer is an aluminum nitride layer, and each second sub layer is an alumina layer. The aluminum nitride layers and the alumina layers are laminated alternatively on the alumina sapphire whose main component is alumina, the crystal lattice characteristic is changed from transition from alumina to aluminum nitride to dispersion from oneinterface to the whole composite structure, the influence of abrupt change of a crystal lattice constant is changed, a stress generated by crystal lattice mismatch is dispersed effectively and avoided from being too concentrated, and the crystal quality of an active layer and the like formed subsequently can be improved.
Owner:HC SEMITEK ZHEJIANG CO LTD
An assembled linear leaf spring for a refrigeration compressor
ActiveCN110439945BImprove reliabilityEffectively disperse stressSprings/dampers design characteristicsLow internal friction springsRefrigeration compressorLinear compressor
The invention provides an assembled linear leaf spring for a refrigeration compressor, comprising an outer fixed washer for installation and positioning, an inner fixed washer, and at least two cylindrical spring arms with the same structure; the center of the inner fixed washer is provided with a In the shaft hole on the piston shaft of the refrigeration compressor, there are not less than two first spring arm installation grooves evenly distributed on the periphery of the inner fixed washer for installing one end of the cylindrical spring arm; The base of the refrigeration compressor is fixed to the installation hole, and the periphery of the outer fixed washer is provided with no less than two second spring arm installation grooves evenly distributed for installing the other end of the cylindrical spring arm. The assembled linear leaf spring for refrigeration compressors of the present invention is applied in refrigeration compressors, and can be freely disassembled. The characteristic curve of the force-deformation of the spring is linear, which meets the linear force requirements of the axial direction of the piston shaft of the linear compressor. The arm can effectively disperse the stress, have a longer service life, and improve the overall reliability of the compressor.
Owner:LIAONING TECHNICAL UNIVERSITY
Fan, motor and its shell
ActiveCN101102063AEffectively disperse stressTo achieve the purpose of strengthening the structurePump componentsPump installationsConvex structureEngineering
The invention is concerned with the shell, includes the top and the wall. It is: the top connects with the edge of the wall; the top is with several concavo convex structures; the concavo convex structure ring set along the central axis of the top in order to increase the stress area of the top. The invention is also concerned with the shell of the motor and fan. The invention not only add fortifier such as rib, but also achieve reinforcement structure by few material, reduce the making cost.
Owner:DELTA ELECTRONICS INC
A modern low-rise prefabricated house structure and assembly method
The invention discloses a modern low-rise assembled house structure and an assembly method, and relates to the technical field of building construction. Including polystyrene insulation board, support assembly, first mesh, second mesh, first reinforcement cage assembly, formwork, second reinforcement cage assembly and connection assembly, the support assembly includes support rods, clamping plates and positioning cylinders , the surface of the support rod is movably provided with a protective sleeve, and the surface of the protective sleeve is movably connected with the inside of the polystyrene insulation board. By setting the supporting components and connecting components, the supporting components can play the role of auxiliary support formwork, ensuring the flatness of the base layer after the wall is poured and avoiding the subsequent leveling work of the base layer. The first mesh and the second mesh can effectively Disperse the stress in the concrete layer and have a good anti-cracking effect. Combined with the concrete to naturally form a crack-resistant, earthquake-resistant, and shear-resistant wall structure, it is in line with economic benefits.
Owner:张强功
A diesel engine flywheel housing
The present invention relates to the technical field of diesel engines, in particular to a diesel engine flywheel housing, comprising a flywheel housing housing, the flywheel housing housing includes a bottom surface and a side wall surrounding the bottom surface, the rear end of the side wall is connected to the bottom surface, and the bottom surface It is integrally formed with the side wall, and the bottom surface and the side wall form a cavity for accommodating the flywheel. The front end of the flywheel shell shell is provided with a ring of dust-proof mesh positioning ring, and the bottom surface of the flywheel shell is provided with reinforcing ribs, which are integrally formed with the bottom surface of the flywheel shell. The present invention significantly improves the strength of the flywheel shell through the design of the flywheel shell structure and the casting process of the flywheel shell, the design of the rib structure effectively disperses the stress, significantly reduces the stress concentration, and improves the bearing capacity and reliability of the flywheel shell. When the flywheel shell is cast, nickel powder and niobium-titanium alloy are added to the iron powder to increase the strength and toughness of the pig iron. Abrasivity improved by 10‑12% compared to before treatment.
Owner:无锡市耀杰机械有限公司
Tank truck support device
InactiveCN104192209BEffectively disperse stressLow risk of ruptureTank vehiclesVehicle fittings for liftingEngineeringTruck
Owner:SNTO TECH GRP
Gallium/sodium alginate/polyacrylamide composite hydrogel material as well as preparation method and application thereof
ActiveCN114702690AImprove toughnessEnsure transparencyElectrical/magnetic solid deformation measurementEthylenediamineMeth-
The invention relates to a gallium / sodium alginate / polyacrylamide composite hydrogel material which is prepared by the following steps: dissolving 1.5-2.84 g of acrylamide in 3.5-13.5 mL of deionized water, then adding liquid metal gallium, carrying out ultrasonic treatment, then adding 2-3.5% of an aqueous solution of sodium alginate at m / m, uniformly stirring, finally adding 0.005 g of a cross-linking agent N, N-dimethyl formamide into an ice-water bath, and carrying out ultrasonic treatment for 0.5-1.5 hours at the temperature of 20-30 DEG C; the preparation method comprises the following steps: adding sodium alginate and polyacrylamide into a mold, pouring the mixture into the mold, heating at 40-55 DEG C for 4-12 hours to form hydrogel, soaking the hydrogel in a 0.15 M CaCl2 solution for 12-24 hours to obtain gallium / sodium alginate / polyacrylamide composite hydrogel, and ensuring that the molar ratio of sodium alginate to acrylamide is 1: (15-30); the addition amount of gallium is 10 to 30 mg; the material is applied as a flexible strain sensor, has extremely high strain sensitivity, and is used in human health monitoring, man-machine communication and artificial tactile processing systems. The structure of the device is as follows:
Owner:BEIJING UNIV OF CHEM TECH
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