99 results about "Adhesion force" patented technology

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 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.

The invention relates to the technical field of slide processing. The invention discloses a slide treatment method for improving wall adhesion of 293T cells. The slide processing method comprises the following steps: preparing a cleaning solution; putting the slide into the cleaning solution, soaking, taking out the slide, washing the slide with deionized water, and putting the slide into a drying oven for drying; immersing the dried slide into PLL treatment liquid for 3-7 minutes, taking out and airing; wherein the cleaning solution is prepared from the following raw materials: potassium dichromate, water and concentrated sulfuric acid; the PLL treating fluid is poly-L-lysine with the mass concentration of 0.05%-0.15%, and the solvent is deionized water. The invention further discloses the slide prepared by the slide treatment method for improving the wall adhesion of the 293T cells. According to the slide treatment method, the adhesive force of the slide to 293T cells can be effectively improved, and the cell adherence is enhanced.

The present invention provides a conductive roller that can reduce frictional force without drastically increasing the hardness of the surface layer. [Solution] The present invention provides a conductive roller 1 comprising a shaft 2, an elastic layer 3 provided on the outer circumference of the shaft 2, and a surface layer 4 provided on the outer circumference of the elastic layer 3, wherein the surface layer 4 has an area ratio of 40% or more of the histogram portion where the adhesion force to the entire histogram measured using an atomic force microscope is 6 nN or less, and an area ratio of 30% or more of the histogram portion where the adhesion force to the entire histogram is 8 nN or more.

To provide an adhesive tape for capturing pests that offers excellent handling and capture efficiency. [Solution] An adhesive tape for capturing pests comprises a strip-shaped support base material 101, a first adhesive region 102 formed only in the central part of the support base material which can capture pests, including stink bugs, by adhesive force when they come into contact with it, and a second adhesive region 103 provided in at least a part of the periphery of the first adhesive region which has weaker adhesive force than the first adhesive region, and more preferably an adhesive tape for capturing pests wherein a non-adhesive region that is not adhesive is provided in at least a part of the region located outside the second adhesive region.

The objective is to provide an image forming method, an image forming apparatus, an image, and an inkjet ink that can improve the varnishability of the formed image. [Solution] An image forming method comprising the steps of: applying an inkjet ink containing wax and a polymerizable compound to a substrate from an inkjet head; and irradiating the substrate to which the ink has been applied with an active ray to form an image, wherein the adhesion force distribution image Y obtained by measuring the force curve of the image surface using a scanning probe microscope is divided into two regions based on the magnitude of the adhesion force in a predetermined procedure, the region with low adhesion force is designated as region A, and the region with high adhesion force is designated as region B, and the area S of region A A The ratio S of the sum of the areas of region A and region B. A An image forming method that satisfies the condition / S is 0.70 or less.

A post-CMP cleaning composition and a post-CMP cleaning method are provided that can more effectively reduce impurities remaining on the surface of a polished object. [Solution] A post-CMP cleaning composition used to clean a polished object that has been subjected to chemical mechanical polishing (CMP), contains water, a water-soluble polymer, and a surfactant; when the surface of the polished object is covered with the post-CMP cleaning composition, when observed with an atomic force microscope, the restoring adhesion force, which is the force acting between the surfactant and a probe of the atomic force microscope having a tip curvature radius of 2 nm or more and 12 nm or less, is greater than 0 N / m and not greater than 0.07 N / m; and the surface roughness of the adsorption layer formed by adsorption of the surfactant on the surface of the polished object is greater than 0 nm and not greater than 0.4 nm.

The invention discloses growth factor loaded GelMA microspheres for promoting healing of infected wounds and a preparation method and application thereof. The preparation method comprises the following steps: enabling a mixed solution containing methacrylic anhydride gelatin and growth factors to flow into liquid nitrogen, and performing ultraviolet radiation to form microspheres; immersing the obtained microspheres into a mixed solution containing dopamine hydrochloride, zinc sulfate and 2-methylimidazole, and vibrating to obtain the drug-loaded microspheres for promoting healing of infected wounds. According to the microsphere, an outer layer structure formed by crosslinking 2-methylimidazole and Zn < 2 + > is introduced to the surface of a GelMA microsphere, so that the microsphere is endowed with antibacterial performance and a drug sustained-release function. In addition, the outer layer structure can load vascular endothelial growth factors (VEGF), and wound healing is further promoted. And by adding dopamine hydrochloride, the adhesive force of the surface of the microsphere is obviously enhanced, so that the microsphere can be better adhered to wound tissues, and the drug delivery efficiency is improved. The microspheres are particularly suitable for the fields of wound healing and tissue repair.

This invention relates to a method for modeling the capillary evolution of humidity-related adhesion forces under micrometer-scale probes. This method establishes a physical relationship between ambient relative humidity and Kelvin radius, and calculates the Kelvin radius in conjunction with the initial volume of the liquid bridge, thereby constructing a parameterized model of capillary forces that characterizes the change in liquid bridge volume with ambient humidity. The influence of the liquid film on the solid surface is considered during model construction, enabling the model to more realistically reflect the formation and evolution of liquid bridges in actual micro / nano interfaces. As the two surfaces gradually move away, the relationship between the curvature of the liquid bridge interface and the Kelvin radius is established under the condition that the liquid bridge volume remains constant, thus achieving a continuous description of the evolution of capillary and adhesion forces during the separation process between the micrometer-scale probe and the sample interface. Furthermore, experimental measurements and model verification of micrometer-scale interface forces are conducted using a self-developed fiber Bragg grating probe.

The utility model provides a hydrogel adhesion testing device for an oral ulcer patch. The hydrogel adhesion testing device comprises a base, a placement seat is fixed on the base, a patch body is placed on the placement seat, a positioning mechanism is arranged on the side of the placement seat, and a testing mechanism is connected above the placement seat in a lifting and sliding manner. The patch body is moved and positioned to the position under the testing mechanism through the positioning mechanism, alignment of the testing mechanism during testing is facilitated, meanwhile, the probe makes contact with hydrogel on the surface of the patch body through downward movement of the moving block, and certain pressure is applied. The pressure sensor starts to record the contact pressure and feeds back the numerical value of the contact pressure to the controller, the controller processes and stores the fed-back pressure, then the moving block moves upwards, the probe is separated upwards at a constant speed, and at the moment, the pressure sensor records the maximum pulling force in the separation process, namely the adhesive force; and the controller also processes and stores the adhesive force, so that the effect of testing the adhesion of the patch body is achieved.

The invention relates to a reversible adhesive flexible electrode material based on zinc ion activation, which is characterized in that polydimethylsiloxane is used as a main chain, and functionalization capable of responding to metal ions is realized through sulfydryl-alkene click reaction and subsequent imidazolation modification. The invention also provides a preparation method and application of the electrode material. The elastomer material disclosed by the invention has remarkably enhanced adhesive force, and can be stably attached to the surfaces of soft tissues such as cerebral cortex and spinal cord; under the action of Zn or after a competitive ligand is introduced, the adhesive force is reduced, and mild stripping is realized. The material is simple in preparation process and excellent in biocompatibility, can be used for constructing a large-area flexible electrode, is suitable for acute and chronic nerve electrophysiological signal acquisition, and is particularly suitable for epilepsy lesion positioning and brain function research.

The invention discloses an adhesion-drug release collaborative design system and method of adhesion type hydrogel, which are applied to the field of biomedical materials. A gradient cross-linking density and dynamic dual-network synergistic adhesion mechanism, a pH responsive nanopore channel of a drug sustained-release layer and a molecularly imprinted chain segment synergistic controlled-release mechanism, and a micro-breathable structure of a bionic cuticle barrier membrane and a zwitter-ion anti-adhesion surface synergistic protection mechanism are constructed; collaborative optimization of triple properties of adhesion self-enhancement in a wet environment, intelligent drug release and low skin irritation is realized; the method does not depend on traditional single function layer stacking or static parameter regulation and control, and starts from three dimensions of material microstructure design, interface coupling relation construction and dynamic response mechanism implantation to establish a set of multi-level collaborative design process capable of being implemented in an engineering mode. The finally formed hydrogel application product can maintain stable adhesive force in a complex physiological environment, at the same time releases treatment components as required, and reduces interference to a skin barrier function to the maximum extent.

The invention relates to the technical field of material performance detection, and particularly discloses a device and a method for detecting the viscosity of a battery pole sealant. The device comprises a base, a standard test plate, a driving mechanism, a bonding test execution mechanism and a displacement sensing mechanism, the driving mechanism is arranged at the top of the base; the standard test board is transversely arranged at the top of the base, and one end is provided with a groove; the adhesion test executing mechanism comprises a sliding block and a temperature control pressure head hinged to the sliding block, the sliding block is driven by a driving mechanism, and a pressure sensor is integrated at the hinged position; the displacement sensing mechanism is arranged on the base; the method comprises the steps of sample loading and positioning, pressing temperature control, constant-speed pulling, synchronous acquisition of adhesive force and displacement, determination of separation time, recording of final displacement, and calculation of viscosity characterization value. According to the invention, a signal is amplified through a single-end bonded and lifted lever structure, and non-contact vision measurement and integrated temperature control are combined, so that the test sensitivity, precision and temperature adaptability are remarkably improved, and efficient, accurate and automatic characterization of the viscosity of the sizing material is realized.

The invention relates to the technical field of denture adhesives, and particularly discloses a high-molecular denture fixing paste which comprises the following components in parts by weight: 30-55 parts of an amphiphilic block copolymer, 10-25 parts of tackifying resin, 20-35 parts of a biocompatible molding agent, 3-8 parts of a thixotropic enhancer and 0.5-5 parts of a functional aid, the amphiphilic block copolymer is selected from a polyethylene glycol-polycaprolactone block copolymer and / or a catechol terminated polyethylene glycol-polylactic acid block copolymer; in the polyethylene glycol-polycaprolactone block copolymer, the number-average molecular weight of a polyethylene glycol block is 2000 to 5000 Da, and the number-average molecular weight of a polycaprolactone block is 3000 to 6000 Da. The macromolecular denture fixing paste provided by the invention can firmly bridge a denture and a tissue, can effectively resist dissolution and scouring of saliva, and can keep structural integrity and adhesive power as long as 12-18 hours.

An image forming method of the present invention includes applying an inkjet ink containing a wax and a polymerizable compound to abase material from an inkjet head; and forming an image by irradiating the base material, to which the inkjet ink is applied, with active rays. When an adhesive force distribution image Y of the surface of the image obtained by a predetermined measurement method is divided into two regions according to the magnitude of adhesive force by a predetermined procedure, and a region having lower adhesive force is referred to as a region A and a region having higher adhesive force is referred to as a region B, a ratio SA / S of an area SA of the region A to a sum S of the area of the region A and an area of the region B is 0.70 or less.

The invention discloses a pressure-sensitive adhesive layer, a polyurethane dressing containing the pressure-sensitive adhesive layer and a preparation method of the pressure-sensitive adhesive layer and belongs to the field of polyurethane dressings, and the overlook plan of the pressure-sensitive adhesive layer comprises a plurality of closed patterns; the edge of the closed pattern is coated with a pressure-sensitive adhesive, and the inner area of the closed pattern is not coated with the pressure-sensitive adhesive. Through the structural design of the pressure-sensitive adhesive layer, a plurality of microstructure units with independent closed patterns form a reasonably distributed non-adhesive area and an adhesive area. When the polyurethane breathable film is applied to the polyurethane dressing, the polyurethane breathable film has proper adhesive force, and meanwhile, the functions of preventing bacterial infection of a wound and reducing the influence of a pressure-sensitive adhesive layer on the breathability and moisture penetrability of the polyurethane breathable film on the whole polyurethane dressing can be remarkably improved, so that the wound rehabilitation rate and the use comfort of a patient are improved, and the application prospect is wide.

The invention provides an electrogenerated viscosity-reducing adhesive as well as a preparation method and application thereof. The electro-induced viscosity-reducing glue comprises modified acrylate resin, the PDI of the modified acrylate resin is larger than 2.5 and smaller than 5, the weight-average molecular weight of the modified acrylate resin is 300,000-800,000, and the electro-induced viscosity-reducing glue using the modified acrylate resin is wide in PDI range, a low-molecular-weight part can be preferentially ionized or polarized, an electric field is rapidly responded, and the adhesive force is triggered to be reduced; the high-molecular-weight part can maintain the integrity of the material, excessive softening or breakage of the adhesive layer in the electrical stimulation process is avoided, and meanwhile, the weight-average molecular weight is within 300,000-800,000, and the bonding strength in the adhesive layer can also be improved; pDI and weight-average molecular weight are matched, so that the normal-temperature retention time can be prolonged. Therefore, the electrogenerated viscosity-reducing glue is short in debonding time, the normal-temperature retention time is prolonged, the initial adhesion strength is high, and the glue layer is prevented from being excessively softened or broken in the electrical stimulation process.

The invention relates to the technical field of image processing and pattern recognition, and discloses a self-adhesive film adhesive force evaluation method based on pattern recognition. A contact area height map is obtained through three-dimensional measurement, and zero offset is achieved; projecting the height matrix column mean value to generate a one-dimensional elevation curve; discrete curvatures are extracted through three-point difference, and the total amount is obtained through accumulation; accumulating coefficient squares to obtain total energy by using a self-defined non-orthogonal spectral basis expansion curve; solving the mean value, the standard deviation, the skewness and the kurtosis of the energy sequence; frequency spectrum intensity is generated column by column according to the coefficient and the spectrum basis, a mean value and a standard deviation are taken to identify a salient region, and the average intensity is solved; constructing an adhesive force evaluation function according to the total curvature, the total energy, the skewness and the kurtosis; and forming a normalized adhesion index by combining the evaluation value and the average intensity of the salient region, and grading according to a threshold value.

Disclosed is a separator for an electrochemical device and an electrochemical device comprising the same. The separator adjusts the contents of halogen atoms and metal atoms exposed on the surface of a coating layer, thereby enabling a dry adhesive force and a wet adhesive force to be improved and the heat resistance of the separator to be improved.

The invention discloses an ultrasonic probe self-adaptive clamping detection device based on an adsorption type workpiece, the ultrasonic probe self-adaptive clamping detection device comprises an ultrasonic detector, an ultrasonic probe and a probe clamping mechanism, the probe clamping mechanism comprises a clamp for clamping the probe and a tool shell, and the clamp is clamped on the circumferential outer side of the ultrasonic probe; the tool shell is arranged on the outer side of the clamp and can slide up and down relative to the clamp, a magnetic attraction wheel is arranged on the tool shell so that the tool shell can be attracted to the surface of a workpiece to be detected, the clamp is provided with a fixing mechanism, and an ultrasonic probe is clamped on the inner side of the clamp through the fixing mechanism. According to the device and the method disclosed by the invention, the technical problems of poor stability, non-uniform attaching force, single applicability, complex operation and the like in the traditional ultrasonic probe clamping process are solved.

The utility model belongs to packaging technical field discloses an adhesion force detection device, including platform, mechanical arm, image acquisition spare, pasting machine and tear machine, platform includes first driving part, article seat and fixed assembly, first driving part connects article seat to drive article seat moves along the first direction, at least two groups fixed assembly interval sets up on article seat along the first direction, and fixed assembly is used for fixing the sample to be measured on article seat, mechanical arm and image acquisition spare are respectively set up in article seat along two sides of second direction relative settings, pasting machine and tear machine all set up on the end of mechanical arm, and pasting machine is used for sticking the adhesive tape of preset length on the sample to be measured, and tear machine is used for tearing the adhesive tape from the sample to be measured, second direction and first direction are mutually perpendicular horizontal direction. The detection efficiency of above -mentioned adhesion force detection device is high.

The present invention addresses the problem of providing a plate-and-frame-type separation membrane element in which a seal part on the supply side is difficult to peel off even when gas is supplied. The above-mentioned problem is solved by a plate-and-frame-type separation membrane element having a sealing part between a supply-side flow path member and a permeation-side flow path member, the permeation-side flow path member having a compressive deformation amount of 0.40 mm or less as measured in accordance with JIS K 7181, and the sealing part having an adhesive force of 1.0 N or more as measured in accordance with JIS K 6854.

Embodiments of the present application provide an adhesion force measurement system, method and electronic device, the system comprising: a component transmission module, a component bearing module, a digital light processing (DLP) projection device, a charge coupled device (CCD) camera and a data processing and control module; wherein: the component transmission module is configured to transmit a target component to the component bearing module; the data processing and control module is connected to the DLP projection device and the CCD camera respectively; the DLP projection device is configured to project a phase shift fringe pattern onto the surface of the target component; the CCD camera is configured to obtain a deformation fringe pattern corresponding to multiple deformations of the target component during separation of the component transmission module and the target component; and the data processing and control module is configured to: determine a maximum out-of-plane displacement of the target component according to the deformation fringe pattern; and determine the adhesion force between the target component and the component transmission module according to the maximum out-of-plane displacement. The method of embodiments of the present application achieves accurate and effective measurement of the adhesion force.

The utility model discloses a PU (Polyurethane) protective film, which comprises a PET (Polyethylene Terephthalate) base material layer (1) and a PU adhesive layer (2), the surface of the PU adhesive layer (2) is coated with an adhesion enhancement layer (3), the surface of the adhesion enhancement layer (3) is coated with a surface hydrophobic layer (4), and the thickness of the adhesion enhancement layer (3) is 1-3 microns; and the thickness of the surface hydrophobic layer (4) is 0.5-1 [mu] m. According to the PU protective film disclosed by the utility model, through a composite structure of the adhesion enhancement layer, the surface hydrophobic layer and the chemical modification layer, the adhesion of dust and oil stain is effectively prevented, the cleanliness is improved, meanwhile, the excellent adhesion force of the PU adhesive layer is kept, and compared with the prior art, the PU protective film shows stronger antifouling property and operability.

Described herein relates to a system of and method for assessing adhesion properties of an adhesion component of at least one Transdermal Delivery System (hereinafter “TDS”) product using a skin-correlated probe. The present disclosure may comprise a skin-correlated probe configured to mimic a surface energy of human skin. Additionally, the skin-correlated probe of the system may be fabricated using additive manufacturing and / or additive layer manufacturing. Accordingly, the skin-correlated probe of the system may substantially decrease the adhesive force required to unbind the adhesive from the skin-correlated probe as compared to an industrial standard stainless steel probe. In addition, the system may be configured to be used for the in vitro in vivo correlation of the at least one TDS product.

The invention relates to the technical field of hydrogel biological adhesives, in particular to a fluorinated polypropyleneimine graft modified hydrogel biological adhesive and a preparation method thereof. The problems existing in the prior art are as follows: a conventional hydrogel biological adhesive is easily influenced by a hydration layer on the surface of a biological tissue, so that close contact and interaction between adhesive molecules and the tissue are weak, and the wet adhesion strength is poor. Aiming at the technical problems, the invention provides the fluorinated polypropylene imine grafted modified hydrogel biological adhesive which is a hydrogel biological adhesive formed by carrying out physical cross-linking reaction and covalent cross-linking reaction on lipoic acid, polyethyleneimine and fluorinated polypropylene imine in an alkaline aqueous solution, and the structure of the hydrogel biological adhesive is formed by introducing a fluorinated group into F-PPI. The introduction of fluorinated groups can effectively repel a hydration layer on the surface of a biological tissue and promote close contact between adhesive molecules and a tissue interface, so that the problem of weak adhesive force of conventional hydrogel in a humid environment is solved.

The utility model discloses a suction cup base which is provided with a first wall face used for making contact with a surface to be attached and a second wall face used for making contact with a suction cup body, the suction cup base is provided with the suction cup body, the suction cup body is provided with a cap body, and side baffles are evenly arranged on the outer circumference of the first wall face at intervals. The inner side surfaces of the side baffles are coated with adhesive glue used for being attached to the surface to be attached. According to the utility model, the adhesive force can be combined on the basis of the adsorption force, so that the risk of separation and falling is more favorably avoided, the long-term use of a user is more favorably met, the actual demand of the user is favorably met, and the market value is higher.

Compared to a case where the protrusions extending from the outer surface of the belt member do not surround the holes provided in the belt member, the reduction in the adhesion force of the recording medium to the outer surface of the belt member caused by the provision of protrusions on the outer surface of the belt member is suppressed. [Solution] The protrusions 521 are provided so as to surround the hole 522. The hole 522 is surrounded by the protrusions 521 located around the hole 522, among the multiple protrusions 521 arranged in a grid pattern. Specifically, the hole 522 is taken in by the portion indicated by reference numeral 4A, the portion indicated by reference numeral 4B, the portion indicated by reference numeral 4C, and the portion indicated by reference numeral 4D of the protrusion 521.