40results about How to "Good stretchability" patented technology

The invention provides a polyurethane material with ionic interaction and a preparation method thereof, and relates to the technical field of polyurethane materials. The preparation method comprises the following steps: mixing polyol, diisocyanate, an organic solvent and a catalyst, and carrying out prepolymerization reaction to obtain an isocyanate-terminated polyurethane prepolymer; the isocyanate-terminated polyurethane prepolymer and a chain extender are mixed for a chain extension reaction, and a chain extension product is obtained; mixing the chain extension product with an end-capping reagent, and carrying out an end-capping reaction to obtain a polyurethane material with ionic interaction; the end-capping agent has a hydroxyl group and a positive ion group. According to the invention, ionic groups are introduced into a molecular structure, and ionic bonds are formed among polyurethane molecular chains, so that the polyurethane material with ionic interaction is obtained. The polyurethane material provided by the invention not only shows excellent mechanical properties (high strength, high toughness and high stretchability), but also has excellent heat resistance, and is expected to be applied to extreme conditions or complex environments.

The invention provides a freeze-thaw enhanced low-energy PEDOT: PSS composite fiber-based artificial synapse transistor and application thereof.The fiber-based artificial synapse transistor is composed of a source-drain fiber electrode, a grid fiber electrode and an ionic gel electrolyte, the source-drain fiber electrode and the grid fiber electrode are prepared from PEDOT: PSS composite fibers, PEDOT: PSS, an anti-freezing agent and a polymer serve as base materials, and the ionic gel electrolyte is prepared from PEDOT: PSS composite fibers. The anisotropic composite fiber electrode which is high in strength, short in energy dissipation path and stretchable is prepared through freeze-thaw pretreatment and a wet spinning technology. The freeze-thaw enhanced low-energy consumption PEDOT: PSS composite fiber-based artificial synapse transistor provided by the invention is high in switching ratio, high in response rate, low in energy consumption, excellent in synapse plasticity and good in pulse cycle stability, and has a huge application prospect in the fields of brain-computer interfaces, human-computer interaction, smart medical treatment, intelligent electronic fabrics and the like.

The invention provides a thermoelectric driving fiber-based organic electrochemical synapse transistor and a preparation method and application thereof, and the thermoelectric driving fiber-based organic electrochemical synapse transistor is composed of a thermoelectric energy supply device, a fiber-based organic electrochemical synapse transistor and wires for connecting all parts. The thermoelectric energy supply device comprises a P-type thermoelectric fiber and an N-type thermoelectric material, and the fiber-based organic electrochemical synaptic transistor comprises a source-drain fiber electrode, a grid fiber electrode and an ionic gel electrolyte. According to the thermoelectric energy supply device prepared based on the Seebeck effect, conversion from heat energy of the human body to electric energy can be achieved, and stable energy supply to the synaptic transistor can be achieved. The integration of the thermoelectric energy supply device and the fiber-based organic electrochemical synaptic transistor has a wide application prospect in the fields of medical treatment, intelligent materials and wearable equipment.

The invention relates to a hydrochromic flexible intelligent thin film and a preparation method thereof. The hydrochromic flexible intelligent thin film can be used for preparing a passive driving flexible intelligent hydrochromic thin film (such as a window thin film). The method comprises the following steps: uniformly doping mesoporous microspheres modified by nano-sized hydrophilic groups into a polymer, curing, and carrying out hydrophilic treatment by using a polyethyleneimine aqueous solution to form the polymer / nano-microsphere composite film. Under different humidity conditions, water absorption / water loss is achieved, the refractive index is changed, the light transmittance of the material is correspondingly changed, incident illumination can be effectively enhanced / weakened through the light transmittance change responded by humidity, and the purpose of photo-thermal regulation and control is achieved. The preparation method is simple, and large-area production can be realized. The polymer / nano microsphere intelligent thin film has good self-regulation optical performance, high response speed, good mechanical performance, thermal stability and corrosion resistance, and the thin film has wide application potential in the scenes of buildings, greenhouses and the like as a passive driving flexible intelligent window.

The invention discloses a preparation method of a large-area decoupling type fiber grating sensor based on an island bridge structure, and the method comprises the steps: firstly carrying out the peripheral pre-stretching of an elastic substrate, and then bonding a plurality of carbon fiber composite sheets which are arranged in a matrix manner on the elastic substrate in a pre-stretching state, a fiber grating and a fiber grating wrapped by glass fiber are respectively bonded and fixed on the two rows of fiber positioning grooves of each row of carbon fiber clad sheets, each fiber grating is provided with a grating point in the groove of each carbon fiber clad sheet, and each groove of each carbon fiber clad sheet is filled and cured; finally, after the elastic substrate is pre-stretched and released, the top surface of the elastic substrate is covered with an elastic top sealing layer, and therefore the large-area decoupling type fiber grating sensor is formed. The large-area decoupling fiber grating sensor prepared by the invention can still obtain a high-precision measurement result when facing high mechanical stress and dynamic deformation.

The invention relates to a knitted fabric flexible capacitive sensor, which comprises a planar first knitted fabric layer, a planar second knitted fabric layer and a middle layer, the first knitted fabric layer and the second knitted fabric layer are connected with each other by weaving spacing yarns therebetween, and the spacing yarns form a middle layer; the first knitted fabric layer and the second knitted fabric layer are formed by intermeshing conductive yarns; the spacer yarns are insulated elastic yarns and are connected with the first knitted fabric layer and the second knitted fabric layer in a tucking manner. The knitted fabric flexible capacitive sensor is integrally formed, simple in structure, good in stretchability and compressibility, capable of detecting compression loads or stretching loads and outputting specific numerical values of the loads, and capable of being widely applied to the fields of human motion monitoring, human-computer interaction and the like.

The invention discloses a capacitance-piezoresistive type dual-mode flexible skin-like system with high stretchability. According to the invention, the sponge composite sensing unit presents two different states of an insulator and a conductor under the action of pressure, dual-mode measurement of proximity sense and pressure sense is realized by adopting a single-sensing-body mechanism, and when a measured object is not contacted, the sensing unit works in a high-resistance-state dielectric state, so that capacitive proximity sense measurement can be realized; after a measured object is contacted, the sensing unit generates a percolation phenomenon under the action of pressure and is adjusted to be in a low-resistance state conductor state, piezoresistive pressure touch measurement can be realized, the sensing electrode layer adopts a snakelike island-bridge structure, the tensile deformation of a skin-like system is limited in a snakelike wire part, and on the premise that the structural flexibility and stretchability of the measurement unit are ensured, the measurement precision is improved. And the coupling response between units in the array is reduced.

The invention provides a preparation method of a stretchable piezoelectric sensor based on oriented PVDF fiber, and relates to the technical field of intelligent sensors, the piezoelectric sensor comprises a packaging layer, a positive TPU film layer, a negative TPU film layer and a PVDF piezoelectric film, the outer surface of the positive TPU film layer and the outer surface of the negative TPU film layer are provided with carbon nanotube particles, and the PVDF piezoelectric film is arranged on the outer surface of the packaging layer. The packaging layer is located on the outer surface of the positive electrode TPU film layer, the outer surface of the negative electrode TPU film layer and the outer surface of the PVDF piezoelectric film. According to the preparation method of the stretchable piezoelectric sensor based on the oriented PVDF fibers, the PVDF nanofiber film with the oriented fiber characteristics is prepared through the electrostatic spinning technology; the PVDF piezoelectric film with high piezoelectric property and high stretchability is obtained by regulating and controlling electrostatic spinning process parameters, the film has high stability and shows good mechanical property through testing, meanwhile, after the film is packaged into a sensor, the open-circuit voltage under different elongation rates is stable through testing, and the mechanical strain of different surface characteristics can be effectively detected.

This invention belongs to the field of membrane separation technology, specifically relating to a method for preparing a polytetrafluoroethylene (PTFE) composite membrane. The preparation method includes: (1) dissolving a spinning aid, a barium source, a titanium source, and a manganese source in a composite solvent, and then electrospinning to obtain precursor fibers; subsequently, blending the precursor fibers with a grain refiner, and heat-treating to obtain doped ferroelectric fiber bundles; (2) further polymerizing organic acids, inorganic acids, conductive fillers, and conductive polymers with monomers and oxidants to finally obtain a conductive polyaniline composite; (3) incorporating Mxene and the conductive polyaniline composite into an aqueous PTFE emulsion, and then further incorporating the doped ferroelectric fiber bundles and stirring to obtain a suspension; the suspension is then coated, post-treated, and kept warm to obtain a PTFE composite membrane. This invention improves the long-term fouling resistance of the PTFE membrane by doping the doped ferroelectric fiber bundles, the conductive polyaniline composite, Mxene, and PTFE.

The application discloses an impact-resistant high-thermal-conductivity polyphenylene sulfide composite material and a preparation method thereof, and relates to the technical field of plastic processing. The preparation method comprises the following steps: S1, preparation of a highly oriented PPS fiber insert; and S2, preparation of the impact-resistant high-thermal-conductivity PPS composite material. The application provides an impact-resistant high-thermal-conductivity PPS composite material and a preparation method thereof. Firstly, the viscoelasticity of PPS resin is improved by using high-melt-viscosity and high-temperature-resistant aromatic polyamide, the interfacial compatibility of PPS / aromatic polyamide is enhanced by using a functionalized polysulfone-based resin as a compatibilizer, so that the stretchability and the tensile orientation degree of PPS are improved; PPS composite fibers are obtained by using a melt spinning machine, and a fiber solid-phase high-multiple-stretching-annealing forming process is established, so that the high-toughness and highly oriented PPS composite fiber material is obtained.

This invention relates to the field of medical biopolymer materials technology, specifically to an injectable hydrogel for kidney stone removal, its preparation method, and its application. The preparation materials include at least a precursor solution 1 and a precursor solution 2. Precursor solution 1 contains at least a polyethylene glycol derivative and a thickener, while precursor solution 2 contains at least a polyamino polymer. By optimizing the formulation ratio of the two-component precursor solutions, a hydrogel with strong conformability, good toughness, and viscosity is formed in situ in the kidney stone area. This encapsulates the kidney stone, facilitating its removal from the body and avoiding the safety hazards associated with small kidney stone fragments or conventional drug treatment.

The invention discloses an ultrasonic 3D imaging system based on a complex special-shaped surface, and provides a preparation method of a moldable gel medium as an ultrasonic solid coupling material. According to the main idea of the invention, the gel medium is shaped into a cavity polyhedral module according to the needs of the actual special-shaped part, so that the complex surface of the special-shaped part is changed into a plane, and a necessary premise is provided for realizing ultrasonic automatic plane scanning. By means of program-controlled automatic scanning path planning, the ultrasonic imaging mode is changed from manual operation to automatic operation, experience dependence on ultrasonic scanners can be remarkably reduced, ultrasonic scanning is standardized and automatic, and the problem of individual difference during ultrasonic manual scanning of different scanners is solved. The prepared moldable gel medium has excellent sound transmission performance and mechanical strength, good biocompatibility and smooth surface, and is convenient for ultrasonic scanning.

The present application relates to the field of organic solar cells, and provides a kind of full asymmetric small molecule donor SMD-Asy and its preparation method and application.The SMD-Asy is connected by Stille coupling from asymmetrically substituted conjugated BDTT core and acceptor unit, and the side chain and main chain structure are all asymmetrically distributed.The preparation of the small molecule donor includes: constructing thiophene and benzo dithiophene diketone BDTT intermediate, introducing long-chain alkoxy side chain under phase transfer catalysis condition, obtaining tin precursor by low-temperature lithiation, and then coupling with halogenated acceptor unit to obtain target molecule.Due to the simultaneous asymmetric design of main chain-side chain, SMD-Asy can regulate the phase separation scale and chain conformation of blended film as the third component in PM6:Y6 system, thereby improving the hole / electron transport balance and mechanical ductility, so that the device can ensure high photovoltaic performance while improving the cracking strain rate.The small molecule donor of the present application is suitable for flexible and stretchable organic solar devices.

The invention discloses a double-crosslinking self-healing hydrogel and a preparation method thereof.The method comprises the steps that firstly, microcrystalline cellulose is treated into nanocellulose through a mixed acid hydrolysis and ultrasonic treatment combined method, and then the hydrogel is prepared, specifically, water is added into PVA, and a PVA solution is prepared; adding the obtained nanocellulose into the prepared PVA solution to obtain a mixed solution A, wherein the mass fraction of the nanocellulose in the mixed solution A is 2.5 wt%-3.5 wt%; and finally, adding water into anhydrous sodium tetraborate to prepare an anhydrous sodium tetraborate solution with the mass fraction of 4-8%, and adding the obtained anhydrous sodium tetraborate solution into the mixed solution A to obtain the nanocellulose-based hydrogel. The prepared porous composite hydrogel is low in cost, mild in reaction, high in output efficiency, good in biocompatibility and high in mechanical strength, and has wide application prospects in the fields of biomedicine, intelligent detection, environment purification and the like.

The invention relates to the technical field of flexible electronics, in particular to a flexible conductive film and a preparation method and application thereof. The flexible conductive film is obtained by drying a solution containing PEDOT: PSS, a water-soluble polymer, a viscous auxiliary agent, a humectant and a polar solvent, in the solution, the mass content of the PEDOT: PSS is 0.1%-1%, the mass content of the water-soluble polymer is 0.2%-3%, the mass content of the viscous additive is 0.5%-10%, the mass content of the humectant is 1%-10%, and the mass content of the polar solvent is 1%-8%. The flexible conductive thin film provided by the invention has relatively good flexibility, stretchability and adhesion, also shows excellent properties such as good biocompatibility and motion interference resistance, and is suitable for long-range monitoring of electrophysiological signals.

The invention discloses a preparation method of a non-woven fabric flexible strain sensor based on an MXene / TPU composite material. The preparation method comprises the following steps: dissolving cetyltrimethylammonium bromide (CTAB) in deionized water, and dipping a cleaned and dried TPU non-woven fabric in a prepared CTAB solution for modification to obtain a CTAB-coated TPU non-woven fabric; the preparation method comprises the following steps: preparing an MXene colloidal solution with a certain concentration, immersing CTAB-coated TPU non-woven fabric into the MXene colloidal solution, and enabling MXene to be uniformly attached to the surface of TPU fiber under the assistance of ultrasonic waves, so as to obtain the flexible strain sensor with excellent performance.

The present invention belongs to the technical field of fluorescent polymer materials, and more specifically, relates to a fluorescent polymer, a preparation of a highly elastic flexible fluorescent composite fiber and its application. The method uses two diamine monomers and a dianhydride monomer as raw materials, and synthesizes a fluorescent polymer by a one-step polycondensation method. The fluorescent polymer is prepared by an electrostatic spinning method to obtain an electrostatically spun membrane, and then a thermoplastic polymer fiber is used as an inner core, and the electrostatically spun membrane is coated on the surface of the thermoplastic polymer fiber by a spray-press coating method to prepare a highly elastic flexible fluorescent composite fiber.

The invention discloses an electrochemical biosensor as well as a preparation method and application thereof, belongs to the technical field of detection, and aims to improve the detection sensitivity, specificity and detection accuracy of key biochemical substances of neurodegenerative diseases. The sensor comprises a substrate layer, a liquid inlet, a liquid outlet, a reference electrode and a counter electrode, the substrate layer comprises a PDMS flexible lower cover layer, a P3HT-Cu NWs conductive sensitive layer and a PDMS flexible upper cover layer, a micro-channel layer is arranged on the PDMS flexible upper cover layer, a channel is arranged in the micro-channel layer, and the P3HT-Cu NWs conductive sensitive layer is connected with a flexible flat cable. The preparation method comprises the following steps: preparing Cu NWs, preparing a P3HT-Cu NWs mixed solution, preparing a PDMS flexible lower cover layer, coating the PDMS flexible lower cover layer with the P3HT-Cu NWs mixed solution to obtain a P3HT-Cu NWs conductive sensitive layer, preparing a PDMS flexible upper cover layer, and bonding and sealing the PDMS flexible lower cover layer and the PDMS flexible upper cover layer to obtain the substrate layer.

The invention provides an electromagnetic shielding composite material and a preparation method thereof, the electromagnetic shielding composite material comprises a conductive film with a wrinkle structure, a binding layer and an elastic substrate layer, and the binding layer comprises a molecular adhesion promoter. According to the electromagnetic shielding composite material provided by the invention, the surface of the conductive film is modified through the bonding layer, and the conductive film with a wrinkle structure can be bonded with the elastic substrate layer through a chemical bond; therefore, the electromagnetic shielding composite material comprising the conductive film with the wrinkle structure, the bonding layer and the elastic substrate layer has excellent tensile property and electromagnetic shielding property. The preparation method of the electromagnetic shielding composite material is simple in preparation step, low in preparation cost and wide in application range.

The utility model discloses an artificial blood vessel provided with a support ring and used for aorta I-type hybridization surgery, which comprises an artificial blood vessel main body, the artificial blood vessel main body comprises a blood vessel middle end, one end of the blood vessel middle end is communicated with an artery connection front end, and the other end of the blood vessel middle end is communicated with an artery connection rear end. The section of the blood vessel middle end is of a corrugated structure, an anti-torsion mechanism is arranged on one side of the blood vessel middle end, and the anti-torsion mechanism comprises a fixing ring installed on one side of the blood vessel middle end. According to the utility model, one side of the artificial blood vessel main body is conveniently drawn in the vertical direction through mutual traction among the plurality of connecting rods up and down, and transverse torsion possibly generated by the artificial blood vessel main body is conveniently resisted by utilizing the elasticity characteristic of the connecting rods, so that torsion and knotting of the artificial blood vessel main body are avoided; therefore, the smoothness of blood operation is ensured.

The invention discloses a preparation method of a heat conduction and storage material based on a CNF / NR dual cross-linked network, and the preparation method comprises the following steps: 1) dispersing a heat conduction filler into a CNF aqueous suspension, and carrying out homogenization treatment to obtain a first mixed solution; 2) uniformly mixing the first mixed solution with a phase change capsule to obtain a second mixed solution; 3) dripping natural rubber latex into the second mixed solution, and uniformly stirring to obtain a third mixed solution; and 4) freezing, drying and pressing the third mixed solution to obtain the heat conduction and storage material. According to the invention, the MPCM is fixed on the surface of the CNF, the NR and CNF continuous network structure is added through microencapsulation, and the BNNS and the MWCNT are combined as binary synergistic enhanced heat-conducting fillers to be self-assembled and dispersed on the continuous network structure, so that an efficient heat-conducting path is formed, and the heat conductivity coefficient of the polymer-based flexible heat-conducting heat-storage material is effectively improved. The heat-conducting and heat-storing material can be applied to effective heat management of the battery, and the application scene of the heat-conducting and heat-storing material is greatly expanded.

The present application relates to the technical field of organic photoelectric material, in particular to a stretchable polymer based on diarylfluorene derivative and a preparation method and application thereof.The stretchable polymer based on diarylfluorene derivative has a structural unit as shown in formula (I), wherein R1 is selected from a fluorine-substituted alkyl chain with 4-20 carbon atoms, and R2 is selected from an alkyl chain or a fluorine-substituted alkyl chain with 4-20 carbon atoms.The present application designs and synthesizes a fluorene monomer substituted by diaryl at the 9th position by using 2,7-dibromofluorenone as raw material through Bayer-Villiger rearrangement and Grignard reaction, introduces a fluorine-substituted alkyl chain at the 4th position of the fluorene unit, effectively enhances the chain entanglement between polymers and constructs a crosslinked network structure, and provides a polymer with excellent flexibility, stretchability and stable photoelectric performance.

The invention relates to printable self-adhesive elastic conductive ink as well as a preparation method and application thereof. The printable self-adhesive elastic conductive ink comprises the following components: a thermoplastic elastomer, an interface enhancer and a conductive filler. The elastic conductive ink with self-adhesion is realized, has high permeability and low diffusivity during printing, can adapt to various smooth or rough substrates, and is particularly easy to realize permeable attachment of the ink on the rough or porous substrate, so that the electromechanical stability of an electrode is improved. Typically, the ink can maintain a low resistance change rate under high tensile deformation, can be printed / printed on a fabric to realize a stretchable conductive fabric, realizes good wear resistance and washing resistance, and can be applied to the fields of human health monitoring, electronic skin, soft robots and the like. The preparation method is simple in process, short in flow, excellent in product performance and convenient for batch and large-scale production, and has good application potential.

The utility model belongs to the field of medical instruments, and particularly relates to a stretchable phototherapy instrument which comprises a plurality of LED light-emitting chips, and the LED light-emitting chips are electrically connected through an elastic conductive material to form an array structure. The device has the effect of stably fitting with the body surface of a patient for phototherapy.

The invention relates to the technical field of lead wires, in particular to a stretchable lead wire and a preparation method and application thereof. According to the stretchable lead wire, the stretchable lead wire comprises an elastic lead core wire and a first insulating layer arranged on the outer surface of the elastic lead core wire in a surrounding mode, the elastic lead core wire comprises first resin and a conductive additive dispersed in the first resin, and the first insulating layer comprises second resin; the elastic modulus of the first insulating layer is lower than that of the elastic lead core wire; the provided elastic lead core wire has good conductivity and elasticity, so that the elastic lead core wire can still keep good conductivity when the elastic lead core wire is deformed under external stress; furthermore, the provided insulating layer has certain stretchability; the elasticity modulus of the insulating layer is limited to be lower, so that the elasticity of the formed insulating layer is better, and the elastic lead core wire can be protected to a certain extent in the stretching process; the prepared lead wire has a relatively good stretchable effect, and has excellent plasticity and conductivity.

This invention relates to the fields of fertilizers and biotechnology, specifically a compound microbial agent for promoting legume growth. The compound microbial agent is composed of 25-35 parts microbial agent, 10-20 parts bioactive agent, 10-15 parts bioactivator, and 30-55 parts water. This invention utilizes the role of microorganisms in preventing plant diseases and / or promoting plant growth. Endophytic bacteria 3G1, isolated from rice seeds, promotes legume root growth and has a 100% successful colonization rate, directly impacting plant growth. Combined with the low-temperature resistance and plant disease resistance functions of other compound microbial agents, it has growth-promoting and disease-preventing effects on legumes. The bioactive agent, a lipopeptide, increases leaf spread, promotes the absorption of the compound microbial agent, increases its activity, and increases crop yield by 3%. The bioactivator provides trace elements necessary for plant growth; when used in conjunction with the compound microbial agent, it effectively promotes seedling growth, improves seedling resistance, and achieves a transplant survival rate as high as 98%.

The utility model relates to a continuous carbon fiber surface sizing treatment production line, which comprises a continuous yarn releasing device, a continuous yarn feeding device, a continuous yarn feeding device, a continuous yarn feeding device and a continuous yarn feeding device, wherein the continuous yarn feeding device comprises a creel; the creel is provided with a plurality of yarn feeding rollers for winding carbon fiber tows; the sizing device comprises a dipping tank, a guide assembly is arranged in the dipping tank to receive the carbon fiber tows fed by the yarn discharging roller, a spraying assembly is arranged on the periphery of the guide assembly, and the spraying assembly is connected with a slurry supply mechanism; the drying device comprises a ceramic tube, carbon fibers penetrate through the interior of the ceramic tube, and a plurality of heating elements are connected to the periphery of the ceramic tube in a sleeving mode in the axis direction of the ceramic tube; the broadening device comprises a transverse vibration roller assembly and a vertical vibration roller assembly which are used for being in contact with the carbon fibers sent out by the drying device; the winding device comprises a winding roller, the winding roller is used for winding the broadened carbon fiber tows, the winding roller is connected with a rotation driving mechanism to provide power for conveying the carbon fibers, and the production line is high in production efficiency.

The present application belongs to the field of flexible strain sensing, and particularly relates to a deformation couple for a flexible strain sensor, a manufacturing method thereof and an application thereof. The deformation couple for the flexible strain sensor comprises two polymer films adhered to each other face to face. Both of the polymer films have good ductility and flexibility. The two polymer films have different adsorption capacities for electrons during deformation. The manufacturing method of the deformation couple comprises preparing two polymer films, applying a liquid form of one of the polymer films on one of the films to adhere the two films. The application of the deformation couple for the flexible strain sensor comprises sensing the movement of a joint or a muscle, or sensing the writing of a finger or a pen point thereon. The present application has excellent flexibility and stretchability, can adapt to various complex movements and deformations, and meanwhile maintains stable performance. The present application has a self-power supply characteristic, and does not need an external power supply.

The invention provides a graphene thin film material reinforced and toughened by using mechanical bonds as well as preparation and application of the graphene thin film material. The preparation method comprises the following steps: synthesizing a bifunctional mechanical interlocking molecule, dissolving the bifunctional mechanical interlocking molecule in an organic solvent, and soaking a graphene oxide film; according to the types of functional groups carried by the mechanically interlocked molecules, adding a reagent beneficial to the combination of the mechanically interlocked molecules and the graphene oxide into the organic solvent; washing and drying the graphene oxide film material obtained after soaking; soaking with hydriodic acid, and then washing and drying to obtain a mechanical bond reinforced and toughened graphene film material; the mechanical interlocking molecule in the graphene thin film material reinforced and toughened by the mechanical bond is one of rotaxane, isohydrocarbon and daisy chain. According to the method disclosed by the invention, the graphene film material is bridged through mechanical bonds, so that the graphene film material is reinforced and toughened.

The application provides a graphene stretchable sound emitting device based on a thermoacoustic effect and related components, and the graphene stretchable sound emitting device comprises a substrate, a graphene dielectric layer, contact metal and a wire medium; the substrate is a stretchable structure, the graphene dielectric layer is a three-dimensional structure layer formed by printing and permeating graphene mixed with deionized water ink into the substrate, the contact metal is arranged on the substrate and located on both sides of the graphene dielectric layer, one end of the wire medium is arranged in the contact metal, and the other end of the wire medium is connected with an output end of an audio player. The graphene stretchable sound emitting device has good stretchability and strong practicability.