19results about How to "Effective adhesion" patented technology

The invention discloses self-adaptive Janus supramolecular hydrogel, a preparation method and application of the self-adaptive Janus supramolecular hydrogel as a wet tissue surface adhesive. The hydrogel has an integrated structure and two asymmetric surfaces: an adhesion surface and an anti-adhesion surface. The method is suitable for the wet tissue surface bonding field.

The invention discloses riboflavin photodynamic antibacterial hydrogel for a diabetes wound dressing as well as preparation and application of the riboflavin photodynamic antibacterial hydrogel, and belongs to the technical field of biomedical materials. The hydrogel is prepared from carbomer 941, rhizoma bletillae polysaccharide and carboxymethyl chitosan through physical and chemical bi-crosslinking, glutaraldehyde and carboxymethyl chitosan are added to form dynamic imine bonds, and the stability and adaptability of the hydrogel are enhanced. Meanwhile, the photosensitizer riboflavin is introduced, so that the hydrogel is endowed with photodynamic sterilization characteristics, efficient antibiosis is realized, and rapid healing of diabetic wounds is promoted. The hydrogel has excellent wound environment adaptability and adhesion performance, and is suitable for complicated wound surfaces of diabetes mellitus. The successful research and development of the invention provide reference for the development of novel photodynamic wound dressings, have wide application prospects, provide better treatment choices for diabetics, and are helpful for accelerating wound healing, reducing infection risks and improving the life quality of patients.

The utility model discloses a metal belt cooling mechanism which comprises a supporting table, a support is jointly welded to the two sides of the upper end of the supporting table, two cleaning frames are installed on one side wall of the support in an up-down symmetrical mode, a cleaning roller is installed on each cleaning frame, flexible brush strips are installed on the outer sides of the cleaning rollers, and the flexible brush strips are connected with the supporting table. And a motor is mounted on the cleaning frame through a bolt at a position opposite to a rolling shaft of the cleaning roller. The cleaning device has the beneficial effects that on one hand, under the action of the cleaning frame, the cleaning roller, the flexible brush strip and the motor, residues on the surface of a metal belt subjected to hot rolling machining can be effectively cleaned, and the residues are prevented from being firmly adhered after the metal belt is cooled, and on the other hand, under the action of the electric telescopic rod, the air cooler, the air injection cover and the clamping roller, the cleaning effect is good. According to the metal belt cooling device, the metal belt can be clamped and corrected through the clamping rollers while air blowing cooling is conducted, so that deformation of the metal belt after cooling is effectively avoided, and the cooling quality of the metal belt is improved.

The invention belongs to the technical field of medicines, and particularly relates to a linarin targeted slow-release nano drug-loading system as well as a preparation method and application thereof. A polylactic acid-polyglycolic acid copolymer is used as a matrix, polyvinyl alcohol is used as a cross-linking agent, and coated drug-loaded microspheres are formed through cross-linking and grafting of the matrix and the cross-linking agent; and then chitosan is used as a protective agent, chitosan and the coated drug-loaded microspheres are crosslinked and grafted to form double-coated composite drug-loaded microspheres, the chitosan in the composite drug-loaded microspheres is used as a shell, the coated drug-loaded microspheres are used as a core, and the linarin targeted slow-release nano drug-loaded system is obtained. Through the double-target design, the targeting property to cornea and lacrimal gland is enhanced, the treatment efficiency of the medicine is improved, stable release and continuous release of linarin are realized, and the problem of unstable release of the medicine is solved; in addition, the targeted slow-release nano drug-loading system is combined with the anti-inflammatory activity and the mitochondrial protection function of linarin, so that the side effects on eyes are reduced, and the safety is improved.

The utility model relates to the technical field of coal bunker level gauges, and provides a coal mine reciprocating touch type explosive-proof and intrinsic safety type coal bunker level gauge which comprises a body, a display screen is fixedly installed on the front side of the body, a driving block is fixedly installed on the front side of an inner cavity of the body, and an installation plate is fixedly installed on the front side of the inner cavity of the body. A round rod is movably mounted in the middle of the mounting plate, and a bobbin is detachably mounted on the outer surface of the round rod; according to the reciprocating touch type explosive-proof and intrinsic safety type coal bunker level indicator for the coal mine, through matched use of a vertical rod structure and a rubber ring structure, in the working process, when a steel wire rope moves upwards to pass through different rubber rings, coal powder attached to the surface of the steel wire rope is scraped off through the inverted buckling design of inner cavities in the bottoms of the rubber rings, and the coal bunker level indicator is used for indicating the coal mine level. Meanwhile, the partition plate is connected with the inner rod and the outer rod through the spring damper and matched with rubber pads on the upper side and the lower side of the partition plate, the detection block is prevented from directly colliding and making contact with the bottom of the body, and the effects of effectively scraping coal powder attached to the surface of the steel wire rope and protecting the whole device are achieved.

The utility model relates to the technical field of drawing frames, and discloses an anti-blocking device for a drawing frame, the anti-blocking device comprises a U-shaped frame arranged at an inlet of the drawing frame, two rotating shafts are rotatably mounted in the U-shaped frame, the two rotating shafts are both fixedly sleeved with hair collecting roller sleeves, felt is detachably mounted and fixed on the two hair collecting roller sleeves, and the hair collecting roller sleeves are fixedly sleeved with the felt. A driving assembly is arranged on the front side of the U-shaped frame and used for controlling the two rotating shafts to rotate relatively, and two dust suction hoods with the bottoms being open are fixedly installed in the U-shaped frame. Compared with the prior art, the device has the following advantages and effects that the adhesion effect of the felt is matched with the negative pressure dust collection effect, a dual protection mechanism is formed, short fibers, fluff and other impurities on the surfaces of fiber strips can be comprehensively and efficiently cleaned away, the blocking phenomenon caused by accumulation of the impurities at an inlet of the drawing frame is avoided, the impurities cannot enter the drawing frame easily, and the service life of the drawing frame is prolonged. Therefore, smoothness of a fiber rod conveying channel at the inlet of the drawing frame is guaranteed, and stable and efficient operation of the drawing frame is guaranteed.

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 present invention relates to the field of medical technology, and provides a PMC nanozyme and a preparation method thereof; the PMC nanozyme comprises: a core layer, the core layer comprises oxygen atoms, phosphate ions and polyoxometalate nanoclusters of a first transition metal element; a coating layer, at least part of the coating layer is fixed on the outer surface of the core layer, and the coating layer is formed by the coordination between a second transition metal and the oxygen atoms on the core layer; wherein the first transition metal element comprises Mo; the second transition metal element comprises Mn, and the coating layer comprises a CO donor for controlling the release of CO gas. The PMC nanozyme of the present invention can utilize polyoxometalate nanoclusters in combination with CO gas therapy to synergistically treat IBD, and on the basis of endowing the nanoclusters with anti-inflammatory and intestinal epithelial barrier repair functions, the catalytic activity is enhanced, and CO is released in an environment of overexpression of reactive oxygen species, thereby alleviating oxidative stress, inhibiting inflammatory responses, restoring intestinal immune balance, and promoting the repair of mucosal damage.

The invention discloses a manufacturing process of an automobile sound-insulation heat-insulation anti-seismic sealing gasket, which comprises the following steps: providing an EVA (Ethylene Vinyl Acetate) foaming material, an auxiliary agent, a foaming agent and a curing agent, and conveying into a hot melting mixer for hot melting mixing to form a viscous substance; injecting the mixed material into an injection molding machine, heating to a certain temperature, pressing the material into a mold by a compression pump, coating a layer of amino silicon oil on the surface of the mold in advance, and finally forming a required shape; after injection molding, the EVA foam pad is taken out and cooled to obtain an EVA foam pad, and the EVA foam pad is fed into a glue dipping pool and dip-coated with a layer of mixed glue solution of phenolic resin and a light curing agent; taking out the glued EVA foaming pad, preheating and drying, and then hot-pressing and adhering a layer of non-woven fabric to form the automobile sound insulation and heat insulation pad; and the automobile sound insulation and heat insulation pad is subjected to coating treatment. A layer of amino silicon oil is coated in a forming mold of the EVA foaming pad, demolding is facilitated, meanwhile, the mixed glue solution of the phenolic resin and the light curing agent on the outer layer is matched, the non-woven fabric can be more effectively bonded, and the stability is improved; and the non-woven fabric and the EVA foaming pad are matched with each other to enhance the sound insulation, heat insulation and shock resistance effects.

The utility model discloses a power plant flue gas dust removal desulfurization denitration integration device in the field of flue gas treatment device, including casing, bubbling mechanism and circulating mechanism, casing both ends set up respectively and go into the smoke mouth and go out the smoke cavity, go into the smoke mouth is used for the flue gas to go into the casing inside, the smoke cavity includes the smoke outlet and the circulation mouth, the circulation mouth with circulating mechanism is connected, sets up the smoke fan at the smoke outlet, circulating mechanism includes circulating air duct and circulating fan, bubbling mechanism includes bubbler and sprays the pipe, the utility model discloses a setting bubbling mechanism and circulating mechanism, through circulating mechanism will flue gas input casing, and act on the surface of bubbler to produce a large number of absorption liquid foam and bubble to improve the contact area of absorption liquid and flue gas, and absorption liquid is with flue gas in the form of foam and bubble, reduces the use amount of absorption liquid, reduces the cost.

The invention provides an air-borne pollen aeration sheet sampling membrane and a sampling method. The air-borne pollen aeration sheet sampling membrane comprises: a substrate; the adhesive layer is arranged on the upper surface of the substrate; the adhesive layer is covered with the release layer, and the substrate, the adhesive layer and the release layer are sequentially arranged in the height extension direction of the airborne pollen aeration sheet sampling membrane; an acquisition area is arranged on the release layer. The pollen collecting device can continuously and efficiently collect pollen while reducing manual intervention. It can be ensured that a sample is kept pure in the collection process, and external pollution is effectively prevented.

The invention discloses a high-performance single-component polyurethane waterproof coating and a preparation method thereof, and the high-performance single-component polyurethane waterproof coating comprises the following components in parts by weight: polyether A, polyether B, an adipic acid polyester plasticizer, a filler, powder, isocyanate, an auxiliary agent A, a catalyst, an auxiliary agent B and a solvent. The auxiliary agent A is 2, 3-dihydroxysuccinic acid or o-hydroxybenzoic acid. The filler is one or two of talcum powder or heavy calcium carbonate. The powder material is nano titanium dioxide. According to the single-component polyurethane waterproof coating adopting a moisture curing system, the coating film has high strength and extensibility, slight base displacement can be resisted, the single component is convenient to use, and working hours are saved; and the extensibility of the coating can be improved by selecting high-functionality and high-molecular-weight polyether. The polyurethane material is a waterproof material, is compact in film formation, and has excellent waterproof performance.

This organopolysiloxane-modified cyclodextrin compound is composed of a sugar unit represented by formula (1) [in the formula, R is a hydrogen atom, a group represented by formula (2) (in the formula, R1 is a group selected from among a C1-C8 alkyl group, a C1-C8 fluorine-substituted alkyl group, and a C6-C12 aryl group, n is an integer of 1-10, and a is an integer of 0-3), or a group represented by formula (3) (in the formula, X is a divalent organic group, and * is a bond that is bonded to a hydroxyl group of another sugar unit)], wherein the ratio among the number NH of moles of the hydrogen atom, the number Ns of moles of the group represented by formula (2), and the number NL of moles of the group represented by formula (3) satisfies NH : Ns : NL = 0.5-2.5 : 0.3-2.0 : 0.1-0.5, and NH+NS+NL is 3.0.

The utility model discloses a flexible FPC bending bearing and film tearing device which comprises a vertical seat, a jacking driving part, a jacking part and a film tearing part, and the vertical seat is vertically arranged below the position between two sets of flexible FPC bending mechanisms which are arranged on the left side and the right side in a spaced mode; the jacking driving part is arranged on one side wall of the vertical seat and outputs power in the vertical direction; the jacking component is arranged on the jacking driving component and is driven by the jacking driving component to move up and down, and the upper part of the jacking component extends towards the left side and the right side respectively so as to bear and jack the flexible FPC bent by the two sets of flexible FPC bending mechanisms from the lower part respectively; the number of the film tearing parts is two, and the two film tearing parts are arranged on the two sides of the upper portion of the jacking part respectively and used for tearing off a release film at the bottom of foam attached to the FPC. According to the utility model, automatic foam film tearing is realized when the FPC is bent, bearing jacking and bonding pressure maintaining are realized through an independent driving mode, the bonding smoothness is effectively improved, bending rebound is reduced, and the bending quality is improved.

The invention relates to the technical field of release paper, and provides high-temperature-resistant release paper and a preparation method thereof. The preparation method comprises the following steps: S100, soaking a paper-based raw material in a silicon quantum dot solution, taking out the treated paper-based raw material, and performing freeze-drying treatment to obtain a modified paper base; and S200, coating the surface of the modified paper base with a fluorocarbon coating to obtain the high-temperature-resistant release paper. The silicon quantum dot solution is adopted for soaking treatment, so that the surface characteristics of the paper base are improved, the high temperature resistance is improved, and the adhesive force with a coating is enhanced; meanwhile, through coating of the fluorocarbon coating, the high-temperature resistance, adhesion resistance, water resistance and corrosion resistance of the paper base are enhanced.

The utility model relates to the technical field of crayfish tail processing, and provides screening equipment for crayfish tail processing, which comprises a device body, a spray head is arranged on the top side in the device body, a first water pipe is fixedly mounted on the front side of the spray head, and a pump is fixedly mounted at the other end of the first water pipe. The rear side of the pump machine is fixedly installed on the front side of the device body, and a second water pipe is fixedly installed at the bottom of the pump machine. When the device is used, circulating water flow can be formed through a spray head of the pump machine, the shrimp tails in the screening barrel are continuously scoured, the water flow impact force is utilized to effectively scatter the adhered shrimp tail blocks, and the water flow impact force is utilized to effectively scatter the shrimp tail blocks; screening errors caused by shrimp tail adhesion are avoided, meanwhile, the scraping plate can scrape impurities intercepted on the filtering plate in the filtering process in time, the phenomenon that the impurities are accumulated to block screening holes of the filtering plate is avoided, water can smoothly pass through the filtering plate to be recycled, and normal operation of the whole screening and separating system is maintained.

This utility model relates to the field of mining blasting technology and provides a dust suppression device after open-pit mine blasting. The device includes a main body with a water tank fixedly installed inside. A water injection pipe is fixedly embedded in the right side of the water tank, and the outer surface of the water injection pipe is fixedly embedded in the rear side of the main body. It also includes a feeding component fixedly embedded inside the main body. In use, the design of the feeding tray and stirring blade structure allows for precise control of the dust suppressant dosage each time, while effectively mixing the dust suppressant and water to ensure a fully uniform distribution. This enhances the adhesion of the sprayed water mist particles, enabling them to adhere more effectively to the surface of fine dust particles, increasing the settling velocity of the dust particles. This improves the settling velocity of fine particles and reduces the likelihood of them being blown away by the wind.

The invention discloses a plastic material for coal mine underground plugging and a preparation method thereof.The material is composed of a material A, a material B and a material C. The material A is prepared from, by mass, 30-50 parts of self-made gelling agent and 50-70 parts of water; the material B comprises the following components in parts by mass: 6-9 parts of potassium carbonate, 3-6 parts of sodium carbonate and 85-90 parts of water; the material C comprises the following components in parts by mass: 10-15 parts of white calcium bentonite; the material is free of temperature rise in reaction, rapid in reaction, good in diffusion and permeability, excellent in adhesion and plugging performance and good in plasticity, and can keep a negative pressure state for a long time after negative pressure pumping; during application, three components are pumped at the same time, operation is easy, performance is excellent, and wide application prospects are achieved.

The invention discloses anti-disturbance and anti-cracking concrete and a preparation method thereof, and belongs to the technical field of concrete. The concrete is prepared from the following components: a cementing material, fine aggregate, modified iron tailing sintered aggregate, carboxymethyl cellulose sodium, fibers, a water reducing agent and water, the preparation method of the modified iron tailing sintered aggregate comprises the following steps: mixing iron tailings, bauxite tailings and limestone, then adding a polyvinyl alcohol aqueous solution, granulating, and sintering to obtain the iron tailing sintered aggregate; the iron tailing sintered aggregate is soaked in a mixed solution of gelatin and glutaraldehyde, then chopped fibers are added, the mixture is vacuumized after ultrasonic dispersion, and the iron tailing sintered aggregate is taken out and dried. The problem that fresh concrete aggregate is prone to segregation under the vibration disturbance working condition is solved through suspension aiding of the modified aggregate and thickening of the cement-based slurry, meanwhile, the fibers are subjected to cross lap joint blocking through the modified iron tailing sintered aggregate, and the fibers can still be distributed in the cement slurry in a criss-cross mode under the vibration working condition; the vibration-reducing, toughening and anti-cracking effects of the fiber are effectively realized.