64 results about "Dielectric elastomers" patented technology

The invention relates to a dielectric elastomer-piezoelectric composite multi-source energy collection device for a non-intrusive electric field sensor, and belongs to the technical field of power system self-powered sensors. The device comprises a base, a dielectric elastomer unit, a piezoelectric cantilever beam, a mass block and a rectification energy storage circuit. The dielectric elastomer deforms under the action of an alternating electric field, the piezoelectric cantilever beam is driven through coupling to generate mechanical vibration, and the piezoelectric layer further converts mechanical energy into electric energy to be output. The resonant frequency of the system is adjusted by setting the mass block, so that the resonant frequency is matched with the external electric field frequency or the environment vibration frequency, and the energy conversion efficiency is optimized. The device can collect external electric field energy in a non-intrusive mode and provide a stable power supply required by a low-power-consumption sensor. The device is compact in structure, high in sensitivity and suitable for electric field monitoring in scenes such as ultrahigh-voltage power transmission lines and transformer substations, and provides reliable energy support for self-powered sensors of power equipment.

The invention discloses a high-performance dielectric elastomer film, a driver capable of being driven at low voltage and a preparation method of the driver. According to the preparation method of the high-performance dielectric elastomer film, customization and balance of mechanical properties and electrical properties of a dielectric elastomer are realized by regulating and controlling the proportion of a chemical cross-linking agent, a high-polarity physical cross-linking agent and a monomer; according to the preparation method of the driver capable of being driven at the low voltage, a dielectric elastomer film and a flexible electrode are stacked through an optimized dry stacking method, the dielectric elastomer driver of a multilayer structure is constructed, and the driver has excellent performance under the low driving voltage. The preparation method has the potential of large-batch and large-scale production, and the prepared dielectric elastomer film has low Young modulus and enhanced strain hardening effect, can avoid electromechanical coupling instability, has high dielectric constant, has large-area strain in a low electric field, and can be used for preparing a dielectric elastomer film. The resulting dielectric elastomer driver can have a blocking force of 0.8 N and an energy density of 80 J / kg at a voltage of 500 V.

The invention relates to the technical field of space non-cooperative target capturing and racemization, in particular to a space non-cooperative target variable-stiffness racemization device based on a dielectric elastomer and application of the space non-cooperative target variable-stiffness racemization device, and the space non-cooperative target variable-stiffness racemization device is suitable for attitude control and racemization operation of space tumbling satellites, space debris and other non-cooperative targets. The supporting assembly comprises a middle shaft, a middle shaft servo motor and a fixing base, the middle shaft vertically penetrates through the fixing base, and the middle shaft servo motor is in transmission connection with the middle shaft and used for driving the middle shaft to rotate around the axis of the middle shaft or driving the middle shaft to pitch in the vertical direction so as to adjust the space posture of the arm rotation eliminating body. Compared with the prior art, the racemization device is high in racemization precision, good in operation flexibility, free of fuel consumption and suitable for long-term space tasks.

The invention discloses a dielectric elastomer waist tracking system, a control method, electronic equipment and a storage medium, and belongs to the technical field of dielectric elastomer control. The dielectric elastomer waist chasing system comprises a control chip, a thin film pressure sensor, a dielectric elastomer and two layers of flexible electrodes. The dielectric elastomer is positioned between the two layers of flexible electrodes; the thin film pressure sensor is overlaid on the outer side of any layer of flexible electrode; the control chip is respectively connected with the thin film pressure sensor and the two layers of flexible electrodes; the thin film pressure sensor is used for acquiring real-time pressure data and sending the real-time pressure data to the control chip, and the control chip is used for controlling target voltage to be generated between the two layers of flexible electrodes based on the real-time pressure data; the dielectric elastomer is used for generating deformation based on the target voltage. According to the dielectric elastomer waist chasing system, the problem that the attaching and supporting effect of a traditional seat waist support is poor is solved.

The invention discloses a bendable plane type soft pump driven by a dielectric elastomer. The pump body comprises a pumping sealing layer, a dielectric elastomer film, a negative pressure sealing layer, a one-way valve and a part of hose; the pumping sealing layer is provided with a fluid inlet and a fluid outlet, the one-way valve is connected with the fluid inlet and the fluid outlet through the hose, fluid flows to the fluid inlet through the one-way valve, flows to the fluid outlet through flow channels among a plurality of unit pumping cavities in the pumping sealing layer and flows out of the one-way valve, and the pumping sealing layer is bonded with the dielectric elastomer film through a bonding surface; the dielectric elastomer film is bonded with the negative pressure sealing layer through a bonding surface, one end of the negative pressure sealing layer is provided with an air exhaust hole, and the air exhaust hole is communicated with a plurality of unit negative pressure cavities on the negative pressure sealing layer through flow channels. The soft pump utilizes voltage to control compression of the dielectric elastomer film and realizes volume change of the pumping cavity under the action of negative pressure so as to pump fluid, the pumping function is kept when the soft pump is bent by utilizing the structural infinitesimal, and the soft pump is suitable for a driving device in a soft robot or wearable equipment.

The application discloses a bipolar group acrylate polymer-based dielectric elastomer material and a preparation method thereof, and belongs to the technical field of polymer synthesis. The method comprises the following steps: uniformly mixing hydroxybutyl acrylate and dichloromethane, adding organic acid and acylation catalyst, stirring and reacting, and obtaining a hydroxybutyl acrylate-based diester monomer after purification; then adding a crosslinking agent and a photoinitiator, uniformly mixing, and obtaining the bipolar group acrylate polymer-based dielectric elastomer material after solidification and crosslinking under ultraviolet light irradiation. The bipolar group acrylate polymer-based dielectric elastomer material is prepared by taking hydroxybutyl acrylate as a dielectric elastomer matrix, performing esterification reaction on the dielectric elastomer matrix with organic acid, and then adding a crosslinking agent to prepare a diester-based dielectric elastomer film. The bipolar group acrylate polymer-based dielectric elastomer material solves the problems of high elastic modulus and low dielectric constant, and improves the mechanical properties, driving performance and dielectric properties of the bipolar group acrylate polymer-based dielectric elastomer material.

The invention relates to the field of dielectric elastomers, in particular to a preparation method of a high-performance dielectric elastomer based on a multi-site small-molecule cross-linking agent. According to an existing dielectric elastomer, a double-site cross-linked network is mainly constructed by using a cross-linking agent with two cross-linking sites, but the design has some limitations in practical application, such as small driving deformation and strong driving field. In order to solve the problems, the existing dielectric elastomer is innovatively improved. On the basis of an original dielectric elastomer, a micromolecular crosslinking agent with three or more sites is introduced, so that a multi-site crosslinking network is constructed. By means of the improved design mode, large driving deformation can be achieved, and meanwhile the driving field intensity can be reduced. More possibilities are provided for the use of the dielectric elastomer in various industrial applications, and the practicability and efficiency of the dielectric elastomer are also improved.

The application discloses a method for analyzing nonlinear dynamics and stress wave propagation characteristics of a dielectric elastomer actuator structure. The method considers the strain hardening effect and viscoelasticity of the dielectric elastomer material, establishes a dynamic model of the dielectric elastomer actuator structure from linear damping assumption and considering material viscoelasticity respectively, calculates the equilibrium deformation and inherent frequency of micro-vibration near the equilibrium state, studies the nonlinear dynamic response of the structure under alternating voltage load, explores the influence law of the constitutive parameters on the nonlinear dynamic response, and analyzes the internal relationship between material viscoelasticity and structure vibration damping. In addition, considering compressibility, the stress wave propagation characteristics in the finite deformation state are studied, the separation phenomenon of transverse wave and longitudinal wave is analyzed, and the influence of the constitutive parameters and strain hardening effect on the stress wave propagation characteristics is explored. The application can provide a theoretical basis for the fine design of the dielectric elastomer actuator and the control of stress wave propagation by adjusting the electric field.

This invention discloses an underwater transparent flexible actuation device, belonging to the field of underwater soft robot technology. The device includes a flexible support frame, a composite actuation film, and conductive connectors. The flexible support frame is a monolithic polymer film with multiple cantilevered support ribs evenly distributed outwards from the center. The composite actuation film is attached and fixed to the flexible support frame and includes two equiaxed pre-stretched dielectric elastomer film layers and a flexible conductive layer sandwiched between them. The two dielectric elastomer film layers self-encapsulate the flexible conductive layer, which is connected to an external power source via conductive connectors. Both the flexible support frame and the composite actuation film are made of transparent materials. By controlling the on / off state of the flexible conductive layer, the flexible support frame is driven to expand and contract to generate buoyancy thrust. This invention solves the problems of complex encapsulation and opacity inherent in traditional DE actuator technology.

This invention discloses a variable stiffness lower limb exoskeleton robot based on a dielectric elastomer. The exoskeleton robot includes a lumbar support beam, two hip joint modules, two knee joint modules, and two ankle joint modules. A hip joint module is located at each end of the lumbar support beam. The lower ends of the hip joint modules are connected to the knee joint modules via hip joint connectors, and the lower ends of the knee joint modules are connected to the ankle joint modules via calf adjustment plates. This invention utilizes a novel driving principle based on dielectric elastomers, which are lightweight, have high energy density, and fast response speed, thus improving the exoskeleton robot's mobility. Based on the motion mechanism of human lower limb joints, the functions of each joint in the lower limb exoskeleton robot are optimized, enhancing its motion assistance performance. This invention can be well applied to lower limb medical rehabilitation, assisting hemiplegic patients in completing walking training, and has significant practical value.

A vehicle interior component includes a surface configured as a textile and a vibration generator configured to generate a vibration of the surface to remove contaminants present on the surface. The textile includes a dielectric elastomer which deforms elastically in response to an electrical voltage applied to the elastomer. The vibration generator is electrically coupled to the elastomer and configured such that the vibration generator applies the electrical voltage oscillating at an oscillation frequency to the elastomer of the textile in order to generate the vibration of the surface.

The application discloses a preparation method of a core-shell structure electrically-driven dielectric elastomer artificial muscle fiber, relates to the technical field of flexible robot driving, and comprises the following steps: preparing BTO nanotubes with high interfacial polarization by means of hydrothermal synthesis and wet chemical method; preparing a polymer mixed solution by taking TPU as a matrix, BDA as a small-molecule polar plasticizing and polarization aid, and the BTO nanotubes as fillers; adopting a continuous solution dipping core-spun method, taking CNT continuous fibers as conductive core wires, continuously coating to form a core-shell structure fiber, and spraying or depositing a conductive polymer electrode layer on the outer layer to obtain the core-shell structure dielectric elastomer artificial muscle fiber. The application realizes the improvement of the dielectric constant of the shell layer and the maintenance of flexibility by synergistically regulating a high dielectric shell layer system, solves the problems that traditional fillers are prone to agglomeration or the poor compatibility between fillers and polymers leads to high loss or mechanical embrittlement, and it is difficult to balance the dielectricity and flexibility, improves the electric displacement efficiency under low and medium pressure conditions, and meanwhile, high elongation and flexibility are maintained.

The application discloses a full-silicon rubber dielectric elastomer driver, a preparation method and application, the dielectric elastomer driver is sequentially from top to bottom a soft electrode layer, a dielectric composite film and a hard electrode layer, the soft electrode layer and the hard electrode layer form an asymmetric electrode structure; the dielectric composite film is prepared into a composite film, namely a CCSR film, by a solution blending method through silicon rubber SR and silane coupling modified carbon black, namely CTES@CB particles; under the action of an applied electric field, the dielectric composite film is deformed under the action of Maxwell electro-elastic force, the hard electrode layer limits the deformation of the corresponding side, and the soft electrode layer releases the deformation of the corresponding side, so that the driver generates enhanced out-of-plane driving displacement. The application provides a preparation technology of a high-dielectric-constant and high-breakdown-strength silicon rubber dielectric film, proposes a strategy of releasing normal deformation by an asymmetric electrode, obtains a DEA driver with enhanced out-of-plane deformation, and realizes continuous dynamic display of a Braille pattern.

The application discloses a numerical simulation method of a viscoelastic nonlinear dielectric elastomer constitutive model, constructs a free energy function of a dielectric elastomer considering a strain hardening effect; obtains a super-elastic constitutive model of the dielectric elastomer according to the free energy function of the dielectric elastomer; based on the obtained super-elastic constitutive model, introduces viscoelasticity of the dielectric elastomer material, and constructs a visco-hyper-elastic constitutive model of the dielectric elastomer; based on the constructed visco-hyper-elastic constitutive model, finite element simulation is carried out on a driver or a sensor structure with the dielectric elastomer as the material to carry out numerical simulation, and electromechanical stability and dynamic response of the dielectric elastomer structure are obtained, thereby laying a theoretical foundation for structure design of the dielectric elastomer. The application provides a new method for accurately calculating critical instability voltage of a complex dielectric elastomer structure, and also provides a possibility for accurately simulating dynamic behaviors of the dielectric elastomer.

The invention provides a dry-type flexible stretchable electrode with a conductive-high dielectric heterostructure, an array high-density electrode group and a preparation method and application of the dry-type flexible stretchable electrode and the array high-density electrode group. The dry-type flexible stretchable electrode comprises a high-dielectric elastomer layer and a conductive layer which are arranged in a stacked mode. The high-dielectric elastomer layer is obtained by doping or permeating a conductive or dielectric material into an elastomer; the conductive layer is formed by printing and depositing gold, silver, copper, carbon or conductive macromolecules; one side, far away from the conductive layer, of the high-dielectric elastomer layer is used for being attached to a human body; the side, away from the high-dielectric elastomer layer, of the conductive layer is connected with an acquisition card through an electrode wire and used for human body electrophysiological signal detection. According to the utility model, the device can be instantly used after being pasted, so that the use convenience is greatly improved, the problem of signal attenuation caused by gel drying is avoided, the environmental electromagnetic influence is avoided or weakened, and the device is particularly suitable for long-term and continuous physiological signal monitoring.

The invention discloses a synthetic jet pipeline robot driven by a dielectric elastomer, and belongs to the technical field of pipeline robots. A dielectric elastomer driver serves as a flexible driving unit, the driver is tightly connected with a latex film of a tail cavity through a device, the driver continuously drives the film to enable the volume of the tail cavity of the robot to periodically change, and synthetic jet is generated; the robot can be stably propelled in a narrow, complex and bent liquid filling pipeline without mechanical driving structures such as propellers. The structure of the pipeline detection robot is designed, so that the robot structure is soft and can adapt to narrow, complex and bent liquid filling pipelines, and meanwhile, the robot is driven by synthetic jet to have the capacity of rapidly moving in the narrow, complex and bent liquid filling pipelines. According to the invention, a brand new solution is provided for the detection of the narrow, complex and bent liquid-filled pipeline, and meanwhile, the practical application of the synthetic jet propulsion technology in engineering detection and other scenes is promoted.

The present application relates to the technical field of dielectric elastomer, and provides a dielectric elastomer driver and a crawling robot, the dielectric elastomer driver comprising a first dielectric elastomer, an elastic structural member and a connecting rod assembly.The elastic structural member is arranged in a spaced manner with the first dielectric elastomer; one end of the connecting rod assembly is connected to the first dielectric elastomer and the other end is connected to the elastic structural member; wherein the spacing between the first dielectric elastomer and the elastic structural member is less than the length of the connecting rod assembly; the first dielectric elastomer drives the connecting rod assembly to perform oscillation movement under the power supply of an oscillation circuit.Under the power frequency of the first dielectric elastomer, the connecting rod assembly obtains periodic vibration, and the dielectric elastomer driver of the present application has a simple overall structure and can solve the problem that the driving power of the self-propelled capsule robot is limited.

The invention discloses a construction method of a dielectric elastomer force-electricity coupling three-dimensional fractional order constitutive model. The construction method comprises the following steps: S1, establishing a force-electricity coupling fractional order tensor constitutive relation under a constant strain rate condition; s2, considering the thickness change of the dielectric elastomer in a uniaxial deformation process, and correcting a force-electricity coupling fractional order tensor constitutive relation; s3, calculating the uniaxial deformation response of the whole stage under the condition of introducing cyclic load; s4, carrying out numerical processing on the model, and determining model parameters through fitting strain rate related force-electricity coupling experiment data; and S5, establishing a relation criterion between the model parameters and the strain rate, and constructing a strain rate-related force-electric coupling three-dimensional fractional order constitutive model. The invention provides a strain-rate-related three-dimensional fractional order constitutive model which is convenient to apply, clear in physical concept and capable of meeting the precision requirement aiming at the DE force-electricity coupling cyclic deformation behavior, so that the defects of an integer order model and a one-dimensional fractional order model in the process of describing the DE force-electricity coupling cyclic deformation behavior are overcome.

This invention relates to a dual-network acrylate dielectric elastomer, its preparation method, and its applications. The method involves initiating a polymerization reaction of an acrylate dielectric elastomer precursor solution under ultraviolet light to obtain a dual-network acrylate dielectric elastomer. The acrylate dielectric elastomer precursor solution comprises the following components in parts by weight: 35-45 parts of flexible acrylate monomer, 5-15 parts of functional acrylate monomer, 55-65 parts of long-chain acrylate crosslinking agent, 0.5-1.5 parts of short-chain acrylate crosslinking agent, and 0.1-0.5 parts of photoinitiator. Compared with existing technologies, this invention can achieve low-voltage driving and rapid response of the dielectric elastomer.

A speaker and a method are disclosed, where the speaker comprises a rotary actuator comprising a wound laminate. The laminate comprises a first layer and a second layer each comprising or consisting of a dielectric elastomer, a first electrode disposed between the first layer and the second layer in direct contact therewith. The laminate also comprises a second metal layer disposed between and electrically conductively connected to a first sub-layer of the first electrode and a second sub-layer of the first electrode. The laminate also comprises a second electrode disposed on a side of the first layer distal from the first electrode and in direct contact with the first layer; a third electrode disposed on a side of the second layer distal from the first electrode and in direct contact with the second layer. The laminate also comprises a first metal layer electrically conductively connected to the third electrode.

The present invention relates to a pump (1) implantable in a human or animal body and comprising : an airtight casing (10), a dielectric elastomer tube (20) extending within said casing (10), arranged so that a volume (22) within said dielectric elastomer tube (20) is modified when a voltage is applied to said dielectric elastomer tube; a negative pressure chamber (N) between said dielectric elastomer tube (20) and said casing (10). The casing comprises two lateral edges (100a, 100b). The dielectric elastomer tube (A) is longitudinally pre-strained between those lateral edges.

The invention discloses a vibration transportation device based on an ultrasonic simulation microgravity environment, relates to the technical field of dust management, and solves the problem that a mechanical driving form of an existing weathered layer transportation system is easily blocked by dust. A vibration generating device is arranged on a fixed base, and a vibration conveying groove is obliquely formed in the upper end of the vibration generating device; microstructures are arranged on the vibration conveying groove at equal intervals. The ultrasonic system is arranged above the vibration conveying groove; the ultrasonic system comprises a plurality of ultrasonic vibrators and ultrasonic vibration plates; the ultrasonic vibrator is connected with the ultrasonic vibration plate, the ultrasonic vibration plate is arranged above the vibration conveying groove in parallel, ultrasonic waves are emitted into the vibration conveying groove, standing field sound waves are formed, and the microgravity environment is simulated. A dielectric elastomer actuator is adopted as a driving part, alternating sine wave high voltage is applied to enable the dielectric elastomer actuator to do reciprocating telescopic motion, the vibration conveying groove is driven to vibrate, and conveying of dust particles on the vibration conveying groove is achieved.

The embodiment of the invention relates to a dielectric elastomer actuator. The dielectric elastomer actuator may include a dielectric elastomer layer, the dielectric elastomer layer including a dielectric elastomer. The dielectric elastomer may include a zwitterionic segment and a soft segment attached to the zwitterionic segment. The dielectric elastomer actuator may also include a first electrode and a second electrode. The dielectric elastomer actuator may also include one or more structural members. The dielectric elastomer actuator may be arranged such that in response to a potential difference applied between the first and second electrodes, a force is applied on the dielectric elastomer layer due to Maxwell stress, thereby moving the one or more structures.

The invention belongs to the technical field of anti-impact protection engineering and intelligent material application, and particularly relates to an active self-adaptive high-impact-resistant buffering device based on the synergistic effect of foamed aluminum and a dielectric elastomer. According to the device, foamed aluminum and a dielectric elastomer are innovatively combined, and an energy absorption-immobilization dual protection mechanism is constructed; a foamed aluminum layer performs passive energy absorption by utilizing buckling deformation of a porous structure, so that effective attenuation of an impact load and uniform distribution of stress are realized; the dielectric elastomer layer is used as an intelligent soft material, a control algorithm is introduced, remarkable electrodeformation and variable stiffness characteristics are generated along with the increase of the electric field intensity under impact, and active expansion hardening is carried out to fill structural gaps generated after foamed aluminum deformation. Compared with a traditional passive protection technology, the buffering device has the advantages that efficient buffering is achieved, meanwhile, equipment displacement and oscillation caused by deformation of the buffering layer are effectively prevented, secondary impact caused by rebounding of the buffering structure after impact can be effectively restrained, and the reliability of test data and the survivability of equipment in the high-impact environment are remarkably improved.

The invention relates to a vehicle interior component (1) having a surface (2) designed as a textile (3) and having a vibration generator (4) for generating vibrations of the surface (2) for removing contaminants (5) present on the surface (2). A compact design can be achieved in that the textile (3) has a dielectric elastomer (6) which elastically deforms in response to a voltage applied thereto, wherein the vibration generator (4) is electrically coupled to the elastomer (6) and is configured such that the vibration generator (4) applies a voltage oscillating at a vibration frequency to the elastomer (6) of the textile (3) in order to generate vibrations of the surface (2).

The present application relates to a kind of cone-shaped dielectric elastomer actuator (Dielectric Elastomer Actuator, DEA) implicit inverse control method for input square state constraint, aims at effectively reducing the influence of hysteresis on system control performance, and solve the input square full state constraint problem in DEA control, including the following steps: based on traditional Preisach model, input square Preisach model is proposed, the hysteresis modeling when input is voltage square term in DEA system is realized.Combined with Fuzzy Logic System (FLS) and Barrier Lyapunov Function (BLF), a new adaptive fuzzy segmented implicit inverse controller is proposed for DEA system with input square state constraint.Based on the control platform built, compared with the controller without implicit inverse and the traditional Backstepping controller, the accuracy and effectiveness of the designed control strategy are verified, the proposed control algorithm has higher precision, and the high-precision control goal of dielectric elastomer actuator is realized.

The invention discloses a polyimide insulating composite material with a double-crosslinking structure as well as a preparation method and application thereof, and belongs to the technical field of polyimide-based insulating composite materials and preparation thereof. The problems of corona aging and breakdown failure of existing polyimide are solved. The preparation method comprises the following steps: firstly, preparing a functional grafted dielectric elastomer solution from 4-amino styrene and 2-hydroxyethyl methacrylate as raw materials, then adding the functional grafted dielectric elastomer solution into polyimide, and carrying out molecular chain end-capping treatment by using 3, 5-difluoroaniline, so as to obtain a functional grafted dielectric elastomer solution; and the polymer film with excellent corona resistance and breakdown resistance and low dielectric loss is obtained.

The invention provides a low-strain drift acrylate dielectric elastomer and a preparation method thereof, and belongs to the field of dielectric elastomers. The invention provides a low-strain drift acrylate dielectric elastomer, which is prepared from the following preparation raw materials in percentage by mass: 20 to 35 percent of bifunctional aliphatic polyurethane acrylate; 15 to 69% of a monofunctional acrylate reactive diluent; 10 to 60% of a monofunctional acrylate active functional monomer; 0.4-1% of a photoinitiator; the monofunctional acrylate reactive diluent comprises a side chain, and a substituent group of the side chain comprises alkyl; polar groups in the monofunctional acrylate active functional monomer comprise one or more of hydroxyl, carboxyl and amino. The dielectric elastomer disclosed by the invention has the advantages of low mechanical loss, high response speed and low strain drift, the dynamic driving response characteristic is remarkably improved, and the application range in the field of dielectric elastomer flexible devices is widened.

The invention relates to a vehicle interior assembly (1) having a self-presentation interior function part (10) which can be moved in a vehicle interior (6) from a deactivated position into an activated position by means of a guide device (2) in combination with an electrically activatable material (3). In order to improve the vehicle interior component (1) in terms of production and / or functionality, the electrically activatable material (3) is a dielectric elastomer (4).

This invention discloses an ionized flexible pressure sensor, its fabrication method, and its application. The sensor includes a first electrode layer, a second electrode layer, a PDMS ion-dielectric elastomer, and metal leads. Each electrode layer consists of a PI thin film and surface electrodes. The PDMS ion-dielectric elastomer layer is located between the first and second electrode layers, and is composed of a porous PDMS elastic framework. A composite formed by an ionic liquid and polyvinylidene fluoride (PVDF) is loaded within the pores of this framework. This invention utilizes an in-situ composite process to load the ionic liquid-PVDF composite within the porous PDMS elastic framework, achieving a stable bond between the ionic liquid and the porous PDMS elastic framework. This avoids migration or leakage of the ionic liquid during use, thus providing an ionized flexible sensor with high sensitivity, a wide pressure response range, and strong stability.