474 results about "Isolation membrane" patented technology

A battery cell (20), comprising: a casing (21); an electrode assembly (22), wherein the electrode assembly (22) is arranged in the casing (21) and comprises a separator (221) and electrode sheets (222), the separator (221) and the electrode sheets (222) being stacked and wound, and a central space (22a) being formed at the center of the electrode assembly (22); and a buffer member (23), which comprises a buffer portion (231) and an extension portion (232), the buffer portion (231) being arranged in the central space (22a), and the extension portion (232) being located outside the central space (22a) and arranged between the casing (21) and the electrode assembly (22). By means of the configuration of the buffer member (23) comprising the buffer portion (231) and the extension portion (232), the probability of brittle fracture during hot pressing of a winding structure is reduced, and the probability of bur formation is thus reduced; in addition, the spacing between the electrode sheets at the innermost corner of the electrode assembly (22) is reduced, the probability of a large gap occurring between the electrode sheets (222) at the innermost corner of the electrode assembly (22) is reduced, and the probability of lithium plating is reduced. By using the extension portion (232) to separate the electrode assembly (22) from the casing (21), the probability of the electrode assembly (22) colliding with the casing (21) when assembled into the casing (21) is reduced, thereby improving the reliability of the battery cell (20).

An image sensor includes a substrate having pixel regions, and a deep isolation pattern provided between the pixel regions within the substrate, wherein the deep isolation pattern includes a liner film covering a sidewall of a trench in the substrate, a first pattern provided on an inner sidewall of the liner film and having a height less than a height of the liner film, an isolation film on inner sidewall of the first pattern, and a second pattern covering inner sidewalls of the isolation film and an upper portion of an inner sidewall of the liner film, a void is provided in the second pattern, the second pattern is spaced apart from the first pattern by the isolation film, and a grain size of the second pattern is larger than a grain size of the first pattern.

The invention provides an isolating membrane for a sodium-ion battery and a preparation method of the isolating membrane. The isolating membrane comprises a base membrane; the functional coating is arranged on at least one side of the base film; wherein the functional coating comprises a functional filler and a binder; the functional filler is prepared from a sulfonated NASICON type solid electrolyte and aminated beta-Al2O3; the mass ratio of the sulfonated NASICON type solid electrolyte to the aminated beta-Al2O3 is 1: (0.2-0.5). The sulfonated NASICON type solid electrolyte and the aminated beta-Al2O3 in the functional coating of the isolating membrane cooperate with each other, so that the isolating membrane has relatively high ionic conductivity, and the isolating membrane can be used for improving the overall performance of the sodium ion battery.

The invention relates to the technical field of tunnel engineering waterproof construction, and discloses a tunnel lining waterstop construction method which comprises the following steps: cleaning and welding a waterstop joint; the water-stop belt is positioned along a lining formwork preset line, tension is applied through cooperation of a steel bar fixing point and a tension clamp, and the gap between the water-stop belt and the formwork is controlled to be smaller than or equal to 0.5 mm; an anchoring part is installed at the bottom of the waterstop, a vertical flange of the anchoring part is used for pressing the lower edge of the waterstop, and a horizontal flange is embedded into concrete; silica gel-based flexible isolating membranes are laid on the two sides of the water stop belt, and the top of the water stop belt is connected with an inflatable expansion strip; nanometer epoxy resin is injected into the micro-channel, the injection pressure and the air pressure of the inflatable expansion strip are dynamically adjusted, and curing is conducted till the filling rate of the nanometer epoxy resin reaches 95% and the air pressure is stable; and finally, concrete is poured, the jacking pressure of the formwork on the water stop belt is adjusted in a partitioned mode through the hydraulic jacking module, and the pressure is relieved after the concrete is initially set. The waterproof sealing structure is mainly used for improving the waterproof sealing performance and the structural stability of the tunnel lining joint.

The utility model provides a quantifiable detection consumable and detection equipment, and relates to the in vitro diagnostic technology, the quantifiable detection consumable comprises a sample tube with a cavity and a reaction tube communicated with the sample tube, the reaction tube is provided with a reaction cavity and a sealing film for sealing the reaction cavity; the piston structure is arranged in the cavity; a first limiting structure used for limiting the piston structure to the first position and a second limiting structure used for limiting the piston structure to the third position are further arranged on the inner wall of the sample tube, the piston structure pierces the sealing film when moving to the third position from the first position, and the treatment liquid quantitatively flows into the reaction cavity; the piston structure is used for puncturing the isolating membrane isolated between the cavity and the reaction cavity, so that the treatment liquid enters the reaction cavity, the step of container replacement is omitted, meanwhile, the piston structure is pushed to move by a preset stroke, it is ensured that the mixed solution quantitatively flows into the reaction cavity, and it is avoided that excessive mixed solution enters the reaction cavity, and the detection result is affected.

The invention provides a display panel and a display device. The display panel is provided with a display area and a non-display area, and the display panel comprises a substrate; the isolation structure is arranged on one side of the substrate and located in the display area and the non-display area, a plurality of isolation openings are defined by the isolation structure, the isolation structure is provided with at least one concave part, the isolation openings are located in the display area, and the concave parts are located in the non-display area. The at least one sunken part is sunken towards the substrate from one side, deviating from the substrate, of the isolation structure; and a plurality of light-emitting devices, wherein at least part of the light-emitting devices are located in the isolation openings. The sunken part can relieve the stress in the isolating membrane group, so that the problem that the adjacent membrane layers in the non-display area are easy to be abnormal is solved.

The invention relates to a flexible adjusting roller device, and belongs to the technical field of film winding equipment, the device comprises a roller body and a force arm mechanism, the roller body is used for applying pressure to an isolating film material roll to flatten wrinkles and lump protrusions, the force arm mechanism comprises a force arm plate, a bearing and a rotating shaft, the force arm plate and the rotating shaft rotate relatively through the bearing, and the rotating shaft rotates relative to the bearing. The force arm mechanisms are installed at the two ends of the roller body in a mirror symmetry mode, so that relative rotation between the roller body and the force arm mechanisms is achieved, the tail ends of the two corresponding force arm plates are fixedly connected with piston rods of the low-friction air cylinder mechanisms, and the control mechanism drives the piston rods to do linear motion and drives the force arm plates to do arc track swing motion around the axis of a rotating shaft. And then the roller body is driven to rotate relative to the rotating center on the force arm mechanism, so that the roller body applies proper pressure to the isolating membrane material roll, the isolating membrane is kept flat in the rolling process, and the rejection rate caused by wrinkles and bulges is reduced.

The invention belongs to the technical field of visual inspection, and particularly relates to an auxiliary product detection device after an isolating membrane dispensing process, which comprises a support suitable for supporting a thin film product to be detected; an upper reflection mechanism and a lower reflection mechanism are respectively arranged on the bracket and above and below the film product to be detected; wherein in the transmission process of the film product to be detected, the upper reflection mechanism and the lower reflection mechanism are suitable for performing visual detection on the upper surface and the lower surface of the film product to be detected in a transmission state under the control of the control module; through the arrangement of the cleaning mechanism, dust adhering to the surface of a thin film is removed in the thin film conveying process, and dust adhering to the surface of the tensioning roller is adsorbed in real time in the process that the tensioning roller rotates to tension the thin film; and dust blown away from the film is prevented from adhering to the surface of the tensioning roller and being pressed on the surface of the film along with rotation of the tensioning roller to affect the subsequent visual inspection effect.

The present invention relates to the technical field of transportation engineering and municipal engineering construction, specifically to an isolation structure and method for over-station construction. An isolation structure for over-station construction, comprising a transversely arranged horizontal steel beam and a longitudinally arranged main steel beam, characterized in that: an isolation membrane structure is provided on the transverse steel beam and the main steel beam, the lower end of the isolation membrane structure is connected to a dense-mesh safety green net, the lower end of the dense-mesh safety green net is connected to a vertical hard isolation structure, and the vertical hard isolation structure is located on the inner side of the platform. Compared with the existing technology, it can be constructed during the operation of the train, and after it is erected, it has high-demand isolation and safety protection, and is fully isolated from the track area, so that the construction in the station and the train operation do not affect each other, thereby improving work efficiency and construction safety.

The invention discloses protective glass, an isolating agent, application of the isolating agent and display equipment, the protective glass comprises a glass body and an isolating membrane layer arranged on at least one surface of the glass body, the isolating membrane layer can inhibit alkali precipitation reaction of soda-lime glass, especially alkali precipitation reaction on the back surface of the glass, and the isolating membrane layer can inhibit alkali precipitation reaction of the soda-lime glass, especially alkali precipitation reaction on the back surface of the glass. And the surface energy difference of the back surface of the glass can be eliminated, so that the whole surface energy becomes more uniform. The protective glass is good in optical transparency, clear in imaging, high in glossiness, low in Ra roughness and high in Rsm roughness, the problem of poor watermarks of a whole machine can be solved, and the protective glass can be adopted for improvement as long as soda-lime glass is used in other industries.

The present invention relates to the technical field of heated tobacco products, and in particular to a storage structure, an on-line winding system and method for reconstituted tobacco in heated tobacco products. This storage structure includes reconstituted tobacco and an isolation film. The reconstituted tobacco is wound to form a paper roll structure. The paper roll structure includes a plurality of single coils with gradually increasing radii. The isolation film includes a plurality of single film coils, and the single film coils are arranged between adjacent single coils. The width of the isolation film is greater than the width of the reconstituted tobacco, and the parts of the single film coils protruding from both ends of the paper roll structure are respectively attached to the end faces of the paper roll structure. Compared with the prior art, the present application changes the winding and storage methods of reconstituted tobacco in heated tobacco products. Since the reconstituted tobacco is protected by the isolation film during the winding process, the moisture absorption and moisture regain of the reconstituted tobacco during the winding process are alleviated, and the problems of mutual adhesion and decreased expansion strength caused by moisture absorption during the storage of the reconstituted tobacco are effectively solved, improving the subsequent processing performance of the reconstituted tobacco.

The invention belongs to the technical field of composite material forming, and particularly relates to a verification method for composite material plate-plate structure glue joint and a glue joint method. The invention provides an application of a pressure-sensitive color-changing film in cementing verification of a composite material plate-plate structure. According to the method, the pressure-sensitive color-changing film and the gluing adhesive film used in the gluing process are simultaneously arranged on the to-be-glued surfaces of the plate-plate structures of the two composite material assemblies through the isolating film, and then the to-be-glued surfaces of the two composite material assemblies apply pressure to the pressure-sensitive color-changing film through pressurization verification or vacuumizing verification, so that the color of the pressure-sensitive color-changing film is changed, and the gluing effect of the two composite material assemblies is improved. By observing the color change condition of the pressure-sensitive color-changing film, the weak pressure area during panel-panel structure cementing is displayed, so that the large-gap area is judged according to the color change condition of the pressure-sensitive color-changing film, the cementing adhesive film is added for compensation, visualization of composite material panel-panel structure cementing verification can be realized, and the operation is simple, accurate and reliable.

The utility model relates to the technical field of electromagnetic valves, in particular to a fluid conveying valve. The fluid delivery valve comprises a valve body which is provided with a valve cavity for fluid delivery and a fluid delivery port, and the valve body is further provided with a mounting port communicated with the valve cavity; the valve element is installed in the valve cavity and used for switching the on-off state of the fluid conveying opening. One end of the driving piece is a driving end, and the other end of the driving piece is a linkage end which extends into the mounting opening and is linked with the valve element; and the isolating membrane seals the mounting opening, an avoiding opening is formed in the isolating membrane, and the driving piece stretches into the valve element through the avoiding opening and is in sealing fit with the edge of the avoiding opening. According to the fluid conveying valve, the isolating membrane is arranged, the installing opening which is formed in the valve body and communicates with the valve cavity is closed through the isolating membrane, so that the fluid conveying opening is separated from the driving piece through the isolating membrane, after the fluid conveying valve is powered on, the isolating membrane can effectively filter fluid impurities flowing through the driving piece, and the situation that the driving piece loses efficacy after being interfered by the fluid impurities is effectively avoided; the fluid delivery valve is damaged, so that the service life of the fluid delivery valve is prolonged.

The invention provides a rubber roller vulcanization film winding device which comprises a machine table, and a clamping mechanism for clamping and fixing a rubber roller and a film winding mechanism for winding and unwinding an isolating film are installed on the machine table. An equipment room is arranged at the lower end of the machine table, a controller for controlling electronic equipment to act is arranged in the equipment room, and manual operation is carried out through a control table on one side of the machine table. The film unwinding piece and the film winding piece are arranged on the film winding frame, isolation film winding and isolation film falling on the rubber roller can be achieved, and the working efficiency of rubber roller film winding is improved; the film winding frame is rotationally installed on the sliding table, the rotating angle of the film winding frame is controlled through the adjusting assembly, and the isolating film can be arranged in the middle or can be inclined by a certain angle in the winding process, so that the isolating film can be installed on the rubber roller in a better attached mode, folding of the isolating film is avoided, gaps and bubbles in the isolating film are reduced, and the rubber roller vulcanization effect is improved.

The utility model belongs to the technical field of batteries, and particularly relates to a battery structure and electric equipment. The battery structure comprises a cover body, a shell, a supporting part and a battery cell body, the cover body is connected to the shell; a mounting cavity is formed between the cover body and the shell; the battery cell body is arranged in the mounting cavity; the battery cell body comprises a first pole piece, a second pole piece and an isolating membrane; the first pole piece, the isolating membrane and the second pole piece are laminated and wound to form a winding body; the innermost ring of the winding body is the second pole piece; a central hole is formed in the winding body; the supporting part is arranged in the central hole and is connected with the second pole piece; and one end of the supporting part in the height direction is connected to the cover body or the shell. According to the utility model, the phenomenon of black spots / lithium precipitation caused by excessive deformation of the structure in the circulation process can be avoided; and the use stability and safety are improved.

The application discloses a forming method for reducing thermal diaphragm wrinkles by prolonging the length of a transition area, which comprises the following steps: S1: after automatic tape laying is completed, a layer of non-porous isolation film is placed on a prepreg blank, vacuum pre-compaction is performed for about 15 min, and the transition area is made more obvious; S2: according to the thickness of the transition area of a part and the layer loss ratio, a blanking program is made in combination with the size of the part blank, and waste prepreg is used for blanking; S3: according to the thickness of the transition area and the layer loss ratio, waste prepreg is used to be laid along the transition area on the blank, and the waste and the blank are butt-jointed to prolong the transition area and enlarge the layer loss ratio; S4: vacuum pre-compaction is performed for about 15 min, so that the waste and the prepreg blank are closely attached, and non-porous isolation film is used to separate the waste and the prepreg blank; and S5: the well-compacted prepreg blank is sent into a thermal diaphragm machine to perform diaphragm forming.

The utility model discloses an unreeling device for isolating membrane processing, which comprises an unreeling roller, an adjusting mechanism is arranged in the unreeling roller, the adjusting mechanism comprises a servo motor, a driving gear, a two-way screw rod and a driven gear, adjusting arms are arranged at two ends of the two-way screw rod, a plurality of sliding chutes are arranged at two ends of the unreeling roller, and the two ends of the two-way screw rod are connected with the servo motor. A limiting mechanism is arranged on one side of the adjusting mechanism, and a driving mechanism is arranged at one end of the unwinding roller. A servo motor is arranged, the servo motor drives a driven gear to rotate through a driving gear, a transmission gear drives a two-way lead screw to rotate, under the limiting effect of a limiting frame, the two-way lead screw drives adjusting arms at the two ends to be close to or away from each other, and therefore a supporting arm is driven to move, and the unwinding width of an isolating membrane is adjusted under the shielding effect of a plurality of pulleys; the isolating membrane unwinding device can be used for unwinding isolating membranes with various widths, so that the unwinding device for processing the isolating membranes can be used for lithium ion battery cells with various specifications.

The utility model discloses a basement side wall waterproof coating composite coiled material which comprises a coiled material body, the coiled material body is composed of an anti-sticking isolating membrane, a macromolecule self-adhesive glue layer, a macromolecule sheet, a PP base layer and an anti-sticking coating, the bottom face of the macromolecule self-adhesive glue layer is bonded with the anti-sticking isolating membrane, and the bottom face of the macromolecule self-adhesive glue layer is bonded with the macromolecule sheet. The upper surface of the high-molecular self-adhesive layer is connected with a high-molecular sheet, the upper surface of the high-molecular sheet is connected with a PP tire base layer, and the upper surface of the PP tire base layer is connected with an anti-adhesive coating. The coiled material body is wound on the winding drum, the winding drum and the limiting disc are matched with the coiled material body, the coiled material can be conveniently laid and pasted, the macromolecule self-adhesive layer is arranged at the bottom of the coiled material, the macromolecule self-adhesive layer is exposed by tearing off the anti-adhesive isolating membrane, the coiled material can be directly laid and pasted, and the coiled material can be conveniently and rapidly laid and pasted. The anti-sticking coating with the particles is arranged on the outermost layer of the coiled material, so that waterproof paint can be better combined with the composite coiled material, and a good waterproof effect is achieved.

The utility model discloses a butyl self-adhesive TPO (thermoplastic polyolefin) polymer waterproof coiled material, which comprises a TPO polymer layer, the TPO polymer layer is divided into three layers, namely an upper TPO layer, a middle TPO layer and a lower TPO layer, a first isolating layer is arranged between the upper TPO layer and the middle TPO layer, a second isolating layer is arranged between the middle TPO layer and the lower TPO layer, and the TPO polymer layer is arranged between the upper TPO layer and the lower TPO layer. Isolating membranes are arranged in the first isolating layer and the second isolating layer, composite butyl raw rubber is adhered to the surfaces of the isolating membranes, an upper waterproof layer is arranged at the top of the upper TPO layer, and a lower waterproof layer is arranged at the bottom of the lower TPO layer. According to the utility model, the waterproof performance and the aging resistance of the butyl coiled material can be improved.

The utility model relates to the technical field of adhesive tapes, in particular to an easy-to-tear double-sided adhesive tape. According to the technical scheme, the winding device comprises two protection discs which are symmetrically arranged, and the same winding shaft is fixedly installed on the opposite sides of the two protection discs and located in the center; the adhesive tape main body comprises an adhesive tape base body, a plurality of isolating membranes, convex electrostatic membranes and grooves, the isolating membranes are adhered to the top of the adhesive tape base body, the isolating membranes are linearly and equidistantly distributed along the isolating membranes, the convex electrostatic membranes are fixedly mounted at one ends of the isolating membranes, the grooves are formed in the other ends of the isolating membranes, and every two adjacent isolating membranes are connected end to end. According to the utility model, the two adjacent isolating membranes are crossed and mutually covered, and the convex electrostatic membrane is matched with the groove, so that the convex electrostatic membrane is easy to separate from the groove, the convex electrostatic membrane is pulled to uncover the isolating membrane, and the isolating membrane is uncovered to the bottom membrane to completely separate the adhesive tape base body from the isolating membrane, thereby achieving the effect of easy tearing.

This utility model relates to a rotary double-compartment preservation bottle, including a feeding compartment; a separating membrane, sealed at the opening of the feeding compartment; an upper compartment sleeve, a shell structure, which is rotated and sealed onto the feeding compartment to form the upper compartment, with the separating membrane located between the upper and lower compartments. The side wall of the upper compartment sleeve is provided with a deformable part, which moves to the center of the upper compartment under the action of external force, reducing the volume of the upper compartment, and resetting after the external force is removed; a guide member, located in the upper compartment and fixedly connected to the lower compartment; and a puncturing member, movably installed on the guide member, which has a puncture part facing the separating membrane. The upper compartment sleeve is drivenly connected to the puncturing member. When the upper compartment sleeve rotates in a first direction, under the guidance and limitation of the guide member, the upper compartment sleeve drives the puncturing member to move towards the separating membrane. After the puncturing part punctures the separating membrane, the upper compartment and the lower compartment are connected, avoiding leakage of the material during the connection of the two compartments and requiring less force. When pouring out the material, it is easy to control the amount of material discharged.

A semiconductor device includes a semiconductor substrate including a single crystal layer, a plurality of semiconductor elements formed on the single crystal layer, and an isolation film which is formed in the semiconductor substrate so as to surround each of the plurality of semiconductor elements in plan view and isolates the plurality of semiconductor elements from one another. The isolation film is made of an antiferroelectric. A minimum value of a relative dielectric constant of the isolation film is less than 2.

The utility model provides a kind of open deep hole blasting air spacer.The open deep hole blasting air spacer includes: air bag;Supporting plate is fixed in the top of the air bag;Handle for providing operating gripping point is installed in the top of the supporting plate;Cylinder for accommodating gas-producing medicament is fixed in the bottom of the supporting plate;Isolation membrane for separating the internal space of the cylinder into first storage bin and second storage bin is installed in the cylinder, and the first storage bin and the second storage bin are used for storing different reaction raw materials.The open deep hole blasting air spacer provided by the utility model sets handle, provides convenient gripping point for operator, so that personnel do not need to crouch down to place in open deep hole blasting operation, can be directly handheld, avoid repeated squatting, reduce labor intensity, and improve work efficiency.

To provide a semiconductor device which provides stable performance and improved reliability in a diode having a structure similar to that of a nanosheet field effect transistor.SOLUTION: A semiconductor device 10 includes: a first well region NW and a second well region PW disposed along a first horizontal direction X in a substrate 101 between element isolation films STI, and coming into contact with each other; nanosheets NS and sacrificial dielectric patterns 111 alternately stacked in a vertical direction; a pair of inactive gate structures GS surrounding both ends of the nanosheets and the sacrificial dielectric patterns, respectively; a first impurity conductive part NC penetrating through the nanosheets and the sacrificial dielectric patterns 101 in the vertical direction to be connected to the first well region NW; a second impurity conductive part PC penetrating through the nanosheets and the sacrificial dielectric patterns in the vertical direction to be connected to the second well region PW; a first contact CT connected to the top of the first impurity conductive part; and a second contact CT connected to the top of the second impurity conductive part.SELECTED DRAWING: Figure 1B

A film includes at least one substrate layer and an adhesive layer. The adhesive layer is disposed on the substrate layer. A light absorption layer is provided in the adhesive layer. A wavelength of light absorbed by the light absorption layer is between 200 nanometers (nm) and 370 nm and / or 460 nm and 2500 nm. The adhesive layer is combined with the substrate layer for bonding and also absorbs a corresponding wavelength of light through the light absorption layer.

The invention relates to a photovoltaic module and a preparation method thereof. The photovoltaic module comprises a battery string, a positive bus bar, a negative bus bar and an insulating isolating membrane, the battery string comprises battery pieces and positive electrode welding strips and negative electrode welding strips which are positioned on the back surfaces of the battery pieces, positive electrode bus bars and negative electrode bus bars are arranged on the back surfaces of the battery strings, and the bus bars are welded with the welding strips with the same polarity; the insulating isolation film comprises an insulating base material layer and a bonding layer arranged on the insulating base material layer; the bonding layer comprises 85%-90% of EVA resin, 5.5%-7.5% of a tackifier, 1%-5% of filler and 0.4%-2.5% of other additives, and the molar ratio of chain links of vinyl acetate units in the EVA resin is 25%-35%; the insulation isolation films are adhered and covered on the positive bus bar and the negative bus bar through the adhesive layers, the positive bus bar and the negative welding strip are isolated through the insulation isolation films, and the negative bus bar and the positive welding strip are isolated through the insulation isolation films.

The utility model relates to the technical field of pressure sensors, and discloses a sanitary pressure sensor, which comprises a bottom assembly, a mounting assembly arranged at the top of the bottom assembly, dismounting assemblies symmetrically arranged on two sides of the bottom assembly, a fixing assembly arranged in the mounting assembly, and detection assemblies arranged in the bottom assembly and the mounting assembly. Through the arrangement of the mounting assembly and the dismounting assembly, good corrosion resistance is achieved through the fixed column body and the isolation diaphragm which are made of stainless steel, corrosion of various chemical substances possibly encountered in the food and medicine production process can be resisted, and the safety and purity of products are guaranteed; by arranging the fixing assembly and the detection assembly, the whole equipment can be disassembled by moving a limiting block, sensor detection can be completed without moving a tank body, the additional cost of production halt and disinfection is avoided, and isolation diaphragms made of different materials can be rapidly replaced when pressure detection is performed on different substances.

The present invention provides a method and flotation system for separating battery dismantling materials by fluid flotation. The method and flotation system for separating battery dismantling materials by fluid flotation include: a cutting step and a flotation step, and continuously flotating the battery dismantling materials placed in a flotation device by providing a fluid with a specific flow rate; wherein the flotation device includes a tube body, a porous guide plate and a screen, and the porous guide plate is formed with a plurality of through holes; and the fluid enters the tube body from the lower opening of the tube body, and sequentially passes through the porous guide plate and the screen to separate the first electrode fragments, the second electrode fragments and the isolation membrane fragments. The method and flotation system for separating battery dismantling materials by fluid flotation of the present invention can improve the separation efficiency of battery dismantling materials of discarded batteries, and facilitate recycling and reuse.

The present application provides an isolation membrane, a preparation method thereof, and a related secondary battery and electrical device, the isolation membrane comprises a porous substrate and a coating disposed on at least one surface of the porous substrate, the coating comprises a fibrous material, a first filler and a second filler, and the average particle size of the second filler is greater than that of the first filler. The secondary battery has the advantages of high energy density, high thermal safety performance, long cycle life and good dynamic performance.

The invention belongs to the technical field of medical instruments, and particularly relates to a thoracic cavity supporting device for operation, which comprises a cylinder body, and the inner wall of the cylinder body is fixedly connected with an isolating membrane; the expansion mechanism is arranged in the cylinder body, the expansion mechanism comprises two expansion plates which are slidably installed on the two sides of the interior of the cylinder body respectively, and the bottoms of the expansion plates are fixedly connected with air bags; and the clamping mechanism comprises a clamping assembly rotationally connected to the outer wall of the cylinder body, and a lifting ring is arranged below the clamping assembly. The isolation membrane can be driven to contract and expand through the expansion plate of the expansion mechanism, the isolation membrane can conveniently penetrate through a surgical incision, the supporting convenience is improved, surgical instruments such as surgical forceps can be clamped through the clamping assembly of the clamping mechanism, after the air bag is inflated and expanded, the surgical incision can be conveniently supported and expanded, and the operation efficiency is improved. And surgical instruments can be conveniently supported and fixed.