388 results about "Adhesion force" patented technology

The invention discloses a gynecological antibacterial gel containing a carbomer component, and belongs to the technical field of gynecological nursing materials. The gel is prepared from 0.5 to 5 percent of plant extract microcapsules, 0.5 to 3 percent of carbomer, 2 to 10 percent of glycerol, 0.1 to 1.5 percent of triethanol and the balance of purified water. The plant extract microcapsule is prepared by compounding methacrylated silk fibroin and a caffeic acid hyaluronic acid graft, has temperature responsiveness, can improve the adhesive force on the surface of vaginal mucosa, and realizes slow release of the plant extract; the caffeic acid catechol hydroxyl is chelated with silver ions, a nano-silver monodisperse layer is formed on the surface of the microcapsule, and the antibacterial activity is improved. The composite plant extract can inhibit bacteria, repair mucous membranes and maintain the acidic microenvironment of the vagina. When the gel is prepared, the problem that the swelling efficiency of carbomer is low is solved through glycerol pre-grinding, and triethanolamine is added in three times to form a gradient cross-linked network. The problems that traditional gel is unstable in viscosity, poor in mucous membrane adhesiveness and prone to damaging vagina micro-ecology are solved, the antibacterial effect is good, and preservation is stable.

The invention discloses a stimuli-responsive on-demand adhesion intelligent conductive hydrogel electrode patch and a preparation method and application thereof, and the preparation method comprises the following steps: uniformly mixing a stimuli-responsive phase transition substrate material, a monomer of a stimuli-responsive color change component, a conductive component, a viscous component, an initiator and a cross-linking agent according to a ratio; then injecting the mixture into a mold, and carrying out initiated polymerization to obtain a hydrogel electrode patch; the stimulus-responsive color change component is a polymer having a UCST temperature or a polymer having a stimulus-responsive color change group. The stimuli-responsive on-demand adhesion conductive hydrogel can be well attached to the skin under the use condition, the signal detection quality is improved, and the signal-to-noise ratio is increased; and after monitoring is completed, the adhesive force with the epidermis of the human body can be reduced in a mild stimulation mode, and lossless removal is achieved. In addition, due to the existence of the stimulus-responsive color change component, the strength of the adhesion performance can be effectively and visually indicated.

The present application provides a curable composition, a thermal interface material (TIM), and a use thereof. In the present application, the curable composition or thermal interface material, and the like can exhibit low adhesion force to a given adherend while exhibiting high thermal conductivity. Also, in the present application, the low adhesion force can be achieved without using an adhesion force adjusting component such as a plasticizer or in a state where the use ratio thereof is minimized. In the present application, the curable composition can also exhibit a precisely controlled curing rate and simultaneously have excellent curability. The present application can also provide a product comprising the curable composition, or a cured body thereof, or a thermal interface material thereof.

The utility model relates to an adhesive tape 90-degree stripping adhesive force testing device, which belongs to the field of adhesive tape production equipment and comprises a base, the base comprises a bottom plate and a mounting seat, the upper surface of the bottom plate is horizontal to form a mounting surface, and a testing plate is detachably mounted on the mounting surface through a fastening component; a first guide rail is fixedly arranged on the base and inclines leftwards, the included angle between the first guide rail and the horizontal direction is 45 degrees, a sliding base is arranged on the first guide rail in a reciprocating motion mode along the first guide rail, a mounting block is fixedly arranged on the sliding base, and a connecting block is mounted on the mounting block. The top end of the connecting block is arranged at the bottom end of the mounting block through a tension sensor, and a clamping assembly used for clamping an adhesive tape is further arranged on the connecting block; the mounting base is further provided with a driving mechanism used for driving the sliding base to reciprocate along the first guide rail. According to the utility model, the influence of dust and foreign matters on the test process can be avoided, so that the test process is ensured to be smoothly carried out and the accuracy of the test result is ensured.

The invention discloses a method, a device and equipment for detecting the attaching force of a locking surface of turnout locking, and relates to the technical field of turnout locking detection. The state data of the switching or locking state of the turnout is firstly read, the pressure data of the pressure sensor preset between the locking iron and the locking frame is read, when the turnout is currently in the switching state, the pressure data of the corresponding side can serve as the action effect value of the fastening bolt on the corresponding side, and therefore the action effect value of the fastening bolt is determined. When the turnout is switched to the locking state, the accurate locking surface attaching force can be determined based on positioning locking or reverse locking according to the difference value between the current pressure data of the corresponding side and the acting effect value of the fastening bolt on the corresponding side. According to the invention, the influence of the pressure generated by the fastening bolt on the locking surface fitting force detection is eliminated, and a high-precision locking surface fitting force detection result can be obtained, so that the close fitting parameter and the control precision of the locking surface fitting force are improved.

The utility model belongs to the technical field of ice-adhesion-resistant coatings, and particularly relates to an ice-adhesion-resistant coating adhesive force comparison test device which comprises a workbench, a base plate is coated with an ice-adhesion-resistant coating, a plywood is made to descend through a lifting assembly, the plywood is attached to the surface of the base plate, meanwhile, a first motor is used for driving a plurality of cams to rotate, and the adhesion force of the base plate is tested. And then the cam rotates to enable the jacking columns to move upwards and impact the bottom surface of the base plate, so that the base plate vibrates through the impact of the jacking columns on the base plate, bubbles in the ice-adhesion-resistant coating can be discharged along with vibration, after the coating is solidified, the plywood ascends, and then the tension sensor feeds back the tension, so that the ice-adhesion-resistant coating is formed. And then the adhesive force is obtained through a numerical value fed back by the tension sensor, and then the steps are carried out on various ice-adhesion-resistant coatings, so that an adhesive force comparison test can be carried out, and the effects of carrying out the adhesive force comparison test on the ice-adhesion-resistant coatings and conveniently discharging bubbles in the ice-adhesion-resistant coatings are achieved.

The oil stain cleaning method and device, the household appliance and the computer readable storage medium are applied to a range hood, and the oil stain cleaning method comprises the steps that a motor is used for driving an impeller to reversely rotate for multiple times according to a preset progressive increase rotating speed, and a weight sensor is used for detecting the weight of the impeller during rotation every time to obtain multiple detected weights of the impeller; determining the adhesive force of the oil stain on the impeller to the impeller based on the plurality of detection weights; if the adhesion force is smaller than the preset value, determining the weight of oil stains on the impeller based on the multiple detection weights and the initial weight of the impeller; and the impeller is cleaned to different degrees based on the oil dirt weight. In the invention, the motor drives the impeller to reversely rotate for multiple times, so that the influence of the generated wind on the measurement of the weight of the impeller by the weight sensor is reduced. The weight of the impeller is measured in the rotating process of the impeller, and the influence of oil stain adhesive force on the weight of the impeller is avoided. The impeller is cleaned to different degrees after the viscous force of the oil dirt to the impeller is compared with the preset value, and the impeller cleaning mode is optimized.

The present application provides a curable composition, a thermal interface material (TIM), and a use thereof. In the present application, the curable composition or thermal interface material, and the like can exhibit low adhesion force to a given adherend while exhibiting high thermal conductivity. Also, in the present application, the low adhesion force can be achieved without using an adhesion force adjusting component such as a plasticizer or in a state where the use ratio thereof is minimized. In the present application, the curable composition can also exhibit a precisely controlled curing rate and simultaneously have excellent curability. The present application can also provide a product comprising the curable composition, or a cured body thereof, or a thermal interface material thereof.

The invention discloses a central venous catheter coating formula and a preparation method thereof.The coating comprises a bottom coating and a top coating, the top coating covers the bottom coating, and the bottom coating comprises, by weight, 50-60 parts of a primer, 1.5-2 parts of a cross-linking agent A, 25-30 parts of ethyl alcohol and 25-30 parts of purified water; the formula of the top-layer coating comprises 100-120 parts by weight of a top coating agent, 1-3 parts by weight of a cross-linking agent B and 100-200 parts by weight of purified water, and the formula of the bottom-layer coating and the formula of the top-layer coating are anti-sticking, hydrophilic and lubricating; the bottom coating has the effect of enhancing adhesive force and is firmly bonded with the base material, and the top coating is combined with the bottom coating through temperature crosslinking, has hydrophilic lubrication and anticoagulation functions and is firmly combined with the base material of the central venous catheter to form the coating with good biocompatibility and antithrombotic effect.

The present invention is a method for determining the liquid-solid adhesion work, during which, in relation to a liquid cylindrically symmetric capillary bridge in a fluid medium between an end having a peripheral circular edge of a measurement element and a solid surface to be tested, a cylindrically symmetrical hold correction is performed on the capillary bridge to determine the change in interfacial area of ​​the capillary bridge and the fluid medium, as well as the capillary bridge and the surface to be tested (S110a), a capillary force is determined (S100) to determine the corresponding total mechanical work (S110b), and for the cylindrically symmetrical hold correction, a difference value of the solid-liquid interfacial tension and the solid-fluid interfacial tension is determined based on the interfacial area change, the total mechanical work, and the liquid-fluid interfacial tension (S120), and the liquid-solid adhesion work is determined by subtracting it from the liquid-fluid interfacial tension (S130). The present invention is further an apparatus for determining liquid-solid adhesion.

The invention discloses an adhesive tape losing adhesion after being electrified as well as a preparation method and application thereof, and relates to an adhesive material. The preparation method comprises the following steps: preparing an octahedral ligand modified CNC compound, weighing acrylate copolymer matrix resin, a dipole response acrylate monomer, a solvent and a dispersant according to a ratio, mixing, adding a photoinitiator, carrying out UV pre-polymerization under nitrogen protection, adding an ion transmission medium, tackifying resin and an anti-precipitation agent, heating, carrying out high-speed shearing emulsification, and cooling to obtain the dipole response modified CNC composite. Adding an octahedral ligand modified CNC (Computer Numerical Control) compound, and reacting to obtain an adhesive; and coating the PET release film subjected to plasma treatment with the adhesive, performing hot air drying, adhering the PET release film subjected to plasma treatment to the other surface of the adhesive layer, and performing secondary UV curing to obtain the adhesive tape without adhesion after electrification. The adhesive tape without adhesion after electrification has the advantages of strong adhesive force, sensitive response, obvious difference of stripping force before and after electrification, no stripping residue, stable circulation, less electrification loss and the like.

The invention discloses a dam anti-seepage material suitable for an extreme environment and an application method of the dam anti-seepage material. The dam anti-seepage material is prepared by mixing the following raw materials in parts by weight: 30-50 parts of self-expanding particles, 10-20 parts of epoxy resin, 0.2-2 parts of a waterborne polyurethane curing agent and 1-10 parts of a complexing agent. The surface of the self-expanding particle is only coated with half of the viscous film, and the viscous film can be tightly attached to the surface of the particle under the condition that the expanding performance of the self-expanding particle is not affected. The swelling capacity of the particles is reserved in the smearing mode, the surface area of the unsmeared part can still freely absorb water and swell, and the adhesion force and stability between the particles are enhanced through the smearing part by forming a compact thin film layer. The design of smearing half does not limit the water absorption expansion capacity of the particles in the particle expansion process, and meanwhile, additional structural support and impact resistance are provided, so that the overall stability and anti-seepage effect of follow-up bonding are remarkably improved.

The invention relates to the field of microbial aggregate detection, in particular to a method for rapidly measuring the adhesive force of aerogenic microbial aggregates, which comprises the following steps: sample preparation: taking a proper amount of microbial aggregates to be measured, and cleaning to remove suspended solids; meanwhile, taking inlet water of the reaction device, and filtering to remove suspended matters in the inlet water; sample culture: feeding water into the microbial aggregate without the suspended matters and the reaction device, and performing sample culture; observing and imaging through a microscope: observing the bubble separation condition of the cultured sample microorganism aggregate under the microscope, collecting a bubble image through a CCD camera, and obtaining the bubble particle size in the bubble image through image processing software; and adhesive force calculation: calculating the maximum adhesive force between the microbial aggregate and the bubbles according to the critical value of the diameter of the maximum bubble staying on the microbial aggregate. According to the invention, the adhesive force between the bubbles and the aggregate can be conveniently and accurately evaluated, and the measured adhesive force is close to a real environment value.

The invention provides a knife switch type soil body and metal interface adhesive force detection system and method.The knife switch is used for simulating material characteristics of different construction machines, and a to-be-detected soil sample is sheared with constant force through the knife switch until the knife switch reaches a balanced state; after the knife switch reaches a balanced state, gradually increasing separation traction force is applied to the knife switch until the knife switch is completely separated from the soil sample to be detected; analyzing the adhesive force between the knife switch and the soil sample to be tested according to the cut-in penetration when the knife switch reaches a balanced state and the separation traction when the knife switch is completely separated from the soil sample to be tested; the device can quickly, efficiently and indirectly measure the adhesive force of the soil body and the metal interface, and provides a theoretical basis for design, installation and application of construction machinery which interacts with the soil body and is influenced by the adhesive force of the soil body and construction of engineering projects.

The invention relates to an optical resin composition and application, and relates to the technical field of nanoimprinting, the optical resin composition comprises the following components: a (methyl) acrylate monomer, a (methyl) acrylate prepolymer with a polyether or polyester chain segment and a photopolymerization initiator; the (meth) acrylate monomer contains a C6-30 aromatic hydrocarbon group. The resin composition for nanoimprint provided by the invention has good optical performance when being used for preparing an optical thin film or an optical device; the composition provided by the invention has good flexibility, and when the composition is used for preparing the nano pattern, the good flexibility is beneficial to resisting the adhesive force and friction force of a mold in the demolding process, so that the deformation and brittle failure of the pattern are avoided, and the integrity and precision of the nano pattern are kept.

A film for bonding semiconductors, which easily controls the fillet while exhibiting excellent adhesion force, and can prevent a problem in which solder is melted and fused to a chip; and a semiconductor package using the same.

The invention discloses a biological patch material with dry-state adhesion and wet-state easy stripping characteristics and application thereof, and belongs to the field of biological medicine. The biological patch material is prepared according to the following steps: by taking water-soluble protein as a template and copper ions in water-soluble copper salt as a metal coordination center, carrying out self-assembly on the template and drug molecules with phenolic hydroxyl structures to form nanoflowers; mixing the acrylamide, the sodium alginate, the water-soluble calcium salt and the nano-flowers to obtain the water-soluble calcium-based water-soluble nano-flower fertilizer. The biological patch material is adhered to the skin through electrostatic interaction, covalent bonds, physical interpenetration and topological tissues. The patch has skin adhesion in a dry state, so that the patch is convenient to fix; after the patch is in contact with burnt skin, the patch absorbs water and swells, the adhesive force is obviously reduced, and painless, easy and non-invasive stripping is realized. In addition, the patch has immunoregulation performance, can prevent stimulation and anaphylaxis caused by long-term contact with the skin, and promotes burn repair.

The invention relates to a method for measuring wafer surface energy in hybrid bonding based on a chemically modified probe. The method comprises the following steps: carrying out surface pretreatment on an atomic force microscope probe and a wafer sample; constructing same functional group modification layers on the surfaces of the microscope probe and the wafer sample; the bending sensitivity, the elastic coefficient and the curvature radius of the probe are calibrated; acquiring a force-distance curve based on interaction between the probe covered by the functional group modification layer and the surface of the wafer sample, and calculating initial adhesion work based on the force-distance curve; and performing error correction on the initial adhesion work by using the surface energy measured by a contact angle method of a standard wafer sample, and establishing a quantitative mapping relation between the corrected adhesion work and the bonding strength. Compared with the prior art, the method has the advantages that the probe is subjected to functional group modification, the adhesive force of the surface of the sample is measured through the functionalized probe, and the surface energy of the wafer sample in mixed bonding is calculated in mixed bonding, so that the subsequent bonding strength of the sample is estimated.

The utility model provides an adhesive force testing device for a bionic dry adhesive material and a testing method of the adhesive force testing device. The utility model belongs to the field of stress testing devices. In the prior art, only a device and a method for measuring the normal adhesive force, the tangential adhesive force and the stripping force of the bionic dry adhesive material exist, and a device and a method for measuring the adhesive force of the bionic dry adhesive material under different spatial poses are lacked. The utility model relates to an adhesive force testing device for a bionic dry adhesive material. The adhesive force testing device consists of a frame, a bottom plate, a horizontal rotating mechanism, a U-shaped bracket, a pitching mechanism, a mounted bearing, a shaft sleeve, a connecting shaft, a Z-axis sliding table, a guide rail, a sliding block, a pull pressure sensor, a sensor mounting seat, a universal damping ball head, an objective table, a clamping mechanism and a plate to be tested. The device not only can be used for testing the normal and tangential adhesive forces of the bionic dry adhesive material, but also can be used for testing the adhesive forces of the bionic dry adhesive material under different spatial poses. According to the utility model, rapid clamping and replacement of to-be-tested plates made of different materials and having surface roughness can be completed, so that the influence of the roughness on the adhesive force can be tested.

Provided is a workpiece holding device capable of holding a workpiece with sufficient adhesive force and capable of separating the workpiece without applying a load to the held workpiece. A workpiece holding device using a self-adhesive adhesion holder is provided with: a flexible belt-shaped base material having an adhesion holding part to which the adhesion holder is mounted; a moving roller having a roller surface; and a load receiving plate that supports, from below, at least a portion of the strip-shaped base material on which the workpiece is held by the adhesion holding portion, the strip-shaped base material being wound and hung on the roller surface of the moving roller such that the adhesion holding portion is positioned on the outside, (I) the adhesion holding portion of the strip-shaped base material can be made flat to hold the workpiece, and the adhesion holding portion of the strip-shaped base material can be made flat to hold the workpiece. And (II) the adhesion holding part of the band-shaped base material can be bent along the roller surface of the moving roller to peel the workpiece, and when the workpiece is held by the adhesion holding surface, the bending of the band-shaped base material due to the weight of the workpiece is prevented by the load receiving plate.

The present application provides a curable composition, a thermal interface material (TIM), and a use thereof. In the present application, the curable composition or thermal interface material, and the like can exhibit low adhesion force to a given adherend while exhibiting high thermal conductivity. Also, in the present application, the low adhesion force can be achieved without using an adhesion force adjusting component such as a plasticizer or in a state where the use ratio thereof is minimized. In the present application, the curable composition can also exhibit a precisely controlled curing rate and simultaneously have excellent curability. The present application can also provide a product comprising the curable composition, or a cured body or thermal interface material thereof.

The invention provides a functional probe for measuring rock-liquid adhesive force and a manufacturing method thereof, the probe is an atomic force microscope probe, and rock sample particles are adsorbed at the detection end of the probe. The manufacturing method comprises the following steps: cleaning the detection end of the probe, moving the probe to a position above the rock sample particles, and adsorbing the rock sample particles by the detection end of the probe to obtain the functional probe. According to the functional probe and the manufacturing method, the interaction force relation between rock and liquid can be rapidly and accurately represented, and the manufacturing method is simple and convenient.

According to the injectable double-layer drug sustained-release hydrogel and the preparation method and application thereof, hydrogel swelling and degradation curve and mechanical property detection shows that extrusion secondary injury to optic nerves can be avoided due to the swelling ratio ratio of 14% of inner-layer hydrogel to 10% of outer-layer hydrogel; the hydrogel precursor solution prepared by the preparation method disclosed by the invention has proper mechanical strength and adhesive force so as to cope with an in-vivo environment, has good injectability, can control the gelling time within 2 minutes, perfectly conforms to a short time window of optic nerve decompression surgery, and has extremely high clinical practical value. The problems that the serious operation risk of cerebrospinal fluid leakage during optic nerve local administration and a traditional local administration carrier lacks in-situ stability and is prone to displacement are solved, the damaged microenvironment can be cooperatively regulated and controlled, and long-acting slow release of nerve regeneration is promoted; multiple functions such as operation safety, medicine long-acting slow release, biocompatibility and operation convenience are successfully integrated, and an unprecedented effective strategy is provided for solving the clinical problem of optic nerve injury.

The invention provides a diagnosis and treatment integrated ostomy bag with customizable adhesive force, which comprises an ostomy bag body convenient for a medical worker to wear on a hand, an adhesive layer for adhering pollutants, pathogens, impurities and other harmful substances, and a bag mouth base plate arranged between the adhesive layer and the ostomy bag body and used for connecting and rotating, the adhesion force and the wet environment adaptability of the adhesion layer can be customized according to the skin state of a patient, the adhesion layer is made of a material with good biocompatibility and antibacterial property, a temperature-sensitive color-changing material is doped in the adhesion layer, and a bottom valve playing a sealing role is arranged at the tail end of the lower portion of the ostomy bag body. The adhesive force can be customized through micro-nano structure design according to the skin state of a patient, the functions of temperature monitoring and skin wound healing can be achieved, and good biocompatibility and antibacterial property are achieved.

To provide a pressure-sensitive adhesive tape, including first and second pressure-sensitive adhesive layers having mutually different compositions, in which improvement of an adhesion force between the pressure-sensitive adhesive layers is achieved.SOLUTION: A pressure-sensitive adhesive tape 10 includes a first pressure-sensitive adhesive layer 3 and a second pressure-sensitive adhesive layer 5 which is directly laminated on the first pressure-sensitive adhesive layer 3 and has a composition different from that of the first pressure-sensitive adhesive layer 3. At least one of the first pressure-sensitive adhesive layer 3 and the second pressure-sensitive adhesive layer 5 contains a surface modifier. A laminate 12 includes a pressure-sensitive adhesive tape 10, a first release liner 1 covering the first pressure-sensitive adhesive layer 3, and a second release liner 7 covering the second pressure-sensitive adhesive layer 5.SELECTED DRAWING: Figure 1

The present invention discloses an acrylate pressure-sensitive adhesive for TPU car cover film and a preparation method thereof in the field of pressure-sensitive adhesive technology. The acrylate pressure-sensitive adhesive for TPU car cover film includes the following raw materials in weight percentage: soft monomer: 20-25%, hard monomer: 8-12%, functional monomer: 2-4%, adhesion promoting monomer: 0.2-1%, reactive polycaprolactone: 0.5-2%, initiator: 0.05-0.2%, solvent: 55-68%, curing agent: 0.15-0.5%. The present invention introduces reactive polycaprolactone to improve the adhesive force of the acrylate pressure-sensitive adhesive and improve the mobility. Adhesion promoting monomers are introduced to improve the peeling force of the acrylate pressure-sensitive adhesive. At the same time, the synthesis method of the acrylate pressure-sensitive adhesive adopts a pure dropwise reaction method of dropping monomers at the solvent reflux temperature, the reaction temperature is easy to control, the upper kettle production is easier to implement, and there is no risk of temperature and material rushing.

The invention discloses a chitosan composite temperature-sensitive gel microsphere for vaginal administration and a preparation method thereof, and relates to the technical field of biological medicines.The preparation method comprises the steps that high-purity chitosan and a temperature-sensitive polymer are mixed, then a cross-linking agent is dropwise added in a gradient mode to form pre-gel, after medicine is ultrasonically embedded, spraying or micro-fluidic forming is conducted, and the chitosan composite temperature-sensitive gel microsphere is obtained; carrying out surface modification and freeze drying by using a stabilizing aid to obtain microspheres; the system is composed of a chitosan matrix, a poly N-isopropylacrylamide temperature-sensitive polymer, a sodium tripolyphosphate cross-linking agent, an antifungal / antiviral / hormone drug and a hydroxypropyl methyl cellulose stabilizing aid, the particle size of microspheres is 50-300 [mu] m, the microspheres are rapidly gelatinized at 37 DEG C, the half-life period of the drug is longer than 8 h, the adhesive force is improved by 30% or above, and the residence time is prolonged to 12 h or above. According to the invention, by constructing a temperature-sensitive interpenetrating network structure and performing surface functional modification, body temperature triggered in-situ gelation, long-acting slow release and strong adhesion synergism are realized, and the local treatment effect and patient compliance are remarkably improved.

The invention discloses a degradable, asymmetric-adhesion and non-swelling Janus hydrogel adhesive as well as a preparation method and application thereof, and belongs to the technical field of functional composite materials and preparation thereof. The problems that an existing Janus hydrogel cannot be degraded, is weak in adhesive force, adheres and is high in swelling are solved. Polyethylene glycol with double bonds, sodium alginate and chitosan are used for physical and covalent cross-linking, a degradable hydrogel substrate is constructed and then soaked in a phosphate buffer solution for swelling equilibrium, then a solution containing chitosan is used for preparing an adhesion coating, and the degradable and asymmetrically-adhered non-swelling Janus hydrogel adhesive is obtained. The adhesive can be applied to the biomedical fields of wound healing anti-adhesion, in-vivo degradability, intestinal repair and the like, and can also be used for adhesion of bioelectronics, epidermal physiological signal monitoring sensors, epidermal muscle fatigue monitoring sensors, rat subcutaneous muscle physiological signal monitoring sensors and muscle fatigue monitoring sensors.

The utility model discloses an easily torn sealing film type jelly cup which comprises a cup body and a stress piece, the bottom of the cup body is connected with an annular cup foot, the top of the cup body is bonded with a sealing film, the surface of the top of the cup body is bonded with a tearing piece, the tearing piece is connected with one end of the sealing film through the tearing piece, and the stress piece is connected with one end of the sealing film. A plurality of grooves are formed in the surface of the cup body and located at the connecting position of the stress piece and the sealing film, the stress piece can drive one end of the sealing film to be lifted upwards when the stress piece is pulled and lifted, the contact area of the sealing film and the cup body in the area is reduced due to the existence of the grooves, and therefore the sealing effect is improved. Due to the fact that the groove is formed in the sealing film, the adhesive force between the sealing film and the cup body at the position is reduced, when the sealing film is opened, the sealing film and the cup body can be separated through small external force under the effect of the groove, an initial tearing point is formed, and therefore the sealing film can be torn off more easily and conveniently for a child with small hand force.

Nature-inspired smart materials offer numerous advantages over environment-friendliness and efficiency. Emulating the excellent adhesive properties of mussels foot proteins, where the Lysine is in close proximity with the 3, 4-dihydroxy-L-phenylalanine (DOPA), embodiments report the synthesis of a novel photo-curable peptide-based adhesive consisting exclusively of these two amino acids. The adhesive is a highly concentrated aqueous solution of a monomer, a crosslinker and a photoinitiator. No toxicity of the adhesive was observed when the cytocompatibility on human dermal fibroblast cells was assessed. Lap-shear adhesion measurements on plastic and glass surfaces and comparison with different types of commercial adhesives showed that the adhesive strength of the disclosed glue is comparable when applied in the air and superior when used underwater. Given the convenience of the facile synthesis, biocompatibility, ease of application underwater and high adhesive strength, embodiments expect that the adhesive may find application, but not limited, to the biomedical field.