281 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 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 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 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 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.

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 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 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.

The utility model provides an inflatable clamping plate which comprises a lower protective plate and an upper protective plate, the protective plates and the lower protective plate can effectively prevent an air cushion of the inflatable clamping plate from being affected by sharp objects or other damage factors in the external environment, the service life of the inflatable clamping plate is prolonged, and the fixing performance of the inflatable clamping plate is kept. Through the structural design of the upper protection plate and the lower protection plate, more stable support can be provided for a patient, the movement range of a local joint or a fracture part is effectively limited, wound healing and fracture fixation are facilitated, one side of the lower protection plate is provided with the female hook-and-loop fastener, one side of the upper protection plate is provided with the male hook-and-loop fastener, and through the connection mode of the hook-and-loop fasteners, the patient can be effectively protected; the clamping plate can be easily operated by a patient or a medical worker, and the hook-and-loop fasteners and the hook-and-loop fasteners are made of reusable materials, so that the adhesive force of the hook-and-loop fasteners and the hook-and-loop fasteners can still be kept good after the hook-and-loop fasteners and the hook-and-loop fasteners are connected for multiple times. Therefore, the clamping plate can be dismounted and mounted for many times.

The invention relates to a test system and method for measuring the adhesion characteristic of a cutter-soil interface, and the structure of the test system for measuring the adhesion characteristic of the cutter-soil interface comprises a cabinet which is used for accommodating a rotary loading mechanism and a data collection assembly; the adhesive force testing mechanism comprises a soil tank arranged on the cabinet, a cutter in contact with a soil sample in the soil tank, a cutter holder connected with the cutter and a transmission shaft connected with the cutter holder; the rotary loading mechanism comprises a loading mechanism and a rotating mechanism arranged on the loading mechanism, and the rotating mechanism is connected with the transmission shaft; and the data acquisition assembly comprises a load-torque sensor and a displacement sensor which are arranged on the rotary loading mechanism. According to the invention, the tool is subjected to downward pressure while rotating, and the complex movement condition and stress state of the tool in actual operation are truly simulated, so that the adhesion characteristic of the tool-soil interface is evaluated more accurately.

The invention belongs to the field of antitumor drugs and relates to a nano chelating agent capable of simulating a tumor epithelial-mesenchymal transition process and inducing ferroptosis as well as preparation and application of the nano chelating agent. The preparation method of the nano chelating agent is simple and low in cost, and specifically comprises the following steps: mixing and stirring MgSO4 and ethylenediamine tetraacetic acid disodium salt (EDTA) in a molar ratio of (0.5-2): 1, continuously stirring for 2-14 hours at the reaction temperature of 4 DEG C, and centrifuging to obtain the EDTA-Mg nano chelating agent. The EDTA-Mg nano chelating agent can destroy the connection between tumor cells, so that the adhesive force of the tumor cells is weakened, the cytoskeleton is remodeled, the polarity disappears, and the tumor cells are changed into a round cell form from an epithelial cell form, thereby realizing the simulation of the tumor epithelial-mesenchymal transition process. In addition, Fe < 2 + > of ferritin can be swept, and EDTA-Fe is formed. And EDTA-Fe reacts with rich H2O2 in the tumor to generate. OH with strong oxidizing property, so that mitochondria damage and lipid peroxidation are caused, and the tumor ferroptosis is induced.

An adhesive force confirmation device (50) is a device for confirming the adhesive force of electrodes (20, 30) used for an electro-therapeutic apparatus (1), and is provided with a pasting part (60) capable of pasting an adhesive part of the electrodes (20, 30). The adhesive part (60) includes a reference surface (63) and active surfaces (61, 62) connected to the reference surface (63), and the active surfaces (61, 62) are configured such that, in a state in which the adhesive part is adhered, the side of the active surfaces (61, 62) that is farther from the reference surface (63) is easier to peel the adhesive part than the side of the active surfaces (61, 62) that is closer to the reference surface (63).

The utility model discloses a high-low temperature alternating damp-heat test box for a high-temperature-resistant adhesive tape, relates to the technical field of test boxes, and solves the problem that in the prior art, after the adhesive tape is subjected to a high-low temperature alternating damp-heat test, the adhesive tape and a test plate can form relatively strong adhesive force, and the adhesive tape is difficult to be quickly taken down. Comprising a test box body, a placing disc is slidably connected in the test box body, a connecting plate is longitudinally slidably connected in the placing disc through a lifting assembly, the lifting assembly is driven by a first lead screw, and a test plate is connected to the connecting plate; the end part of the first screw rod is connected with a gear, a cavity is formed in the test box body, a rack is connected in the cavity, and the gear is meshed with the rack. The device has the beneficial effects that the test plate can be disassembled, high-temperature-resistant glue needing to be tested can be quickly taken down, and the operation efficiency is improved.

Provided are a resin multilayer substrate in which peeling of a protective film that protects the surface of a resin laminate is suppressed, and an electronic device provided with the resin multilayer substrate. The resin multilayer substrate is provided with a resin laminate. The resin laminate has a first region, a second region, and a third region as a layer direction region. The resin multilayer substrate is provided with a first resin material that is bonded from the surface of the first region to the third region, and a second resin material that is formed in the third region. The second resin material covers a portion of the first resin material and covers an end portion of the first resin material present in the third region. When E1 represents the Young's modulus of the first resin member and E2 represents the Young's modulus of the second resin member, the Young's modulus of the first resin member and the Young's modulus of the second resin member are set to E1lt. And E2. When AD1 represents the adhesion force between the first resin member and the resin laminate, and AD2 represents the adhesion force between the second resin member and the resin laminate, AD2 > = AD1.

The utility model discloses an adhesive cutting device, and relates to the technical field of adhesive processing. The glue supply device comprises a platform, the top of the platform is fixedly connected with a frame, and the top of the frame is fixedly connected with a glue supply cylinder; a self-cleaning assembly is arranged in an inner cavity of the frame and comprises a cleaning box, and one side of an inner cavity of the cleaning box is movably connected with a reciprocating lead screw. The motor drives the lead screw to rotate, so that automatic movement of the cutter is achieved, the driving gear on the surface of the driving lead screw is meshed with the driven gear on the surface of the reciprocating lead screw, the scraper is driven to reciprocate, the cutter moves into the cleaning box together, and the scraper reciprocates in the cleaning box. Residues attached to the surface of the cutter are effectively scraped through the glue scraping opening, the electric heating plate is arranged in the cleaning box and can heat the environment in the cleaning box so that the scraped residues can be softened, the adhesive force of the residues is reduced, and follow-up clearing operation is facilitated.

The application belongs to the field of aerospace coating, and particularly relates to a primer for the outer protective coating of a spacecraft, a preparation method and a use method. The primer comprises the following raw materials in parts by weight: tackifier 2-8 parts, alkyl silicone oil 5-10 parts and diluent 80-90 parts. The primer contains a large amount of inorganic / organic groups, can form a strong chemical bond with the substrate, and improve the adhesion of the coating. Meanwhile, the primer can also have interpenetration synergy with the silicone resin in the coating to form a PIN network structure, further improving the adhesion. In addition, the primer can also be activated to generate silanol under the condition of water molecules, and hydrolysis and bonding with inorganic media to form a firm silicon-oxygen bond. That is, the primer has inorganic / organic dual properties, is applied between organic and inorganic materials, and forms a micro organic-inorganic interface between the two, thereby enhancing the adhesion.

The invention discloses a preparation method of a high-adhesion self-repairing polyurethane elastomer, which specifically comprises the following steps: taking polytetrahydrofuran glycol and isophorone diisocyanate as raw materials, taking tannic acid and 4, 4 '-diaminodiphenyl disulfide as chain extenders, and adopting a one-pot polymerization method to prepare high-adhesion polyurethane. The polyurethane elastomer is endowed with self-repairing performance by introducing an aromatic group disulfide bond and a dynamic hydrogen bond, the prepared material can complete the repairing process within 2 hours at the temperature of 80 DEG C, and the adhesive force on steel is greater than 10 MPa. A new insight is given to preparation of a high-adhesion self-repairing material, the synthesis method is simple, and the prepared polyurethane has excellent adhesion and self-repairing performance and can be applied to multiple fields.

The utility model provides a surface adhesive force measuring instrument using a weighing method, which relates to the technical field of measuring instruments and comprises a main body, a surface adhesive force measuring instrument and a weighing device, the inspection assembly is arranged in the main body and the inspection cavity and used for measuring the adhesive force of the adhesive surface, and the inspection assembly internally comprises a clamping piece and a balancing weight; and the weight increasing assembly is arranged at the bottom of the inspection cavity and is used for performing weight increasing treatment on the balancing weight. According to the device, the detection assembly is matched with the weight increasing assembly to continuously increase the weight of the balancing weight in the matched detection process, so that the detected weight is gradually increased, a user does not need to repeatedly change the balancing weight, the use convenience of the device is improved, the clamping piece is matched with the detection assembly to quickly and stably fix and clamp the adhesive tape, and the detection efficiency is improved. And the situation that the gravity center is unstable or the inspection result is inaccurate due to loosening and sliding of the adhesive tape in the inspection process is prevented.