35results about How to "Improve adhesion strength" patented technology

A negative electrode for a rechargeable lithium battery and a rechargeable lithium battery including the same are provided. The negative electrode includes: a negative electrode current collector including a carbon layer and a silicon layer, the carbon layer including a first porous substrate and a carbon-based material present inside the first porous substrate, and the silicon layer including a second porous substrate and a silicon-based negative electrode active material present inside the second porous substrate; and a negative electrode active material layer disposed on a surface of the negative electrode current collector and including a negative electrode active material.

The invention belongs to the technical field of copper ore beneficiation, and particularly relates to a method for improving the flotation separation efficiency of micro-fine particle malachite. The method for improving the flotation separation efficiency of the micro-fine particle malachite comprises the following steps that quartz ore powder, malachite ore powder and water are mixed according to the mass ratio of 5: 1: (15-40), and first ore pulp is obtained; and a collecting agent is added into the first ore pulp, the final concentration of the collecting agent is made to range from 50 mg / L to 240 mg / L, and second ore pulp is obtained. Inorganic acid is added into the second ore pulp, flotation is conducted, and copper concentrate is obtained. Wherein the collecting agent is obtained by mixing a mixture of fatty acid, fatty alcohol-polyoxyethylene ether and polyethylene glycol according to the mass ratio of (70-82): (2-10): (8-28). The inorganic acid is selected from any one of sulfuric acid, hydrochloric acid and nitric acid. The mass concentration of the inorganic acid is 5%-25%, and 0.1 mL-0. 7mL of the inorganic acid is added into each liter of ore pulp. According to the method, the separation efficiency of the micro-fine particle malachite and the quartz is remarkably improved, and the copper recovery rate of the copper concentrate reaches 85.14%-86.6%.

The invention relates to a cell grid line transfer printing device and method. The device comprises an unwinding assembly and a winding assembly and is used for conveying the patterned transfer printing film. The visual inspection assembly is used for acquiring position information of the film and the battery piece; a carrying platform of the pasting bearing platform is used for bearing the battery piece and is driven by a first moving part to realize horizontal movement and movement perpendicular to a film surface so as to finish alignment and pasting; and the pressing roller assembly comprises a heating roller, a first temperature control part used for accurately controlling the temperature and a pressure adjusting part used for adjusting the pressure so as to complete hot pressing transfer printing. The device can also comprise a movable heating plate for preheating the film, a carrying table temperature control part for preheating the battery piece, and a vacuum adsorption and liftable carrying table for fixing the battery piece. The corresponding method comprises the steps of battery piece feeding and alignment, vertical attachment, heating and rolling and base film removal, and can comprise the step of preliminary pressing, and the alignment precision, the hot-pressing uniformity and the production efficiency of transfer printing can be improved.

This invention discloses a surgical anti-adhesion biopolysaccharide irrigation solution and its preparation method, which is prepared from the following raw materials in parts by weight: 5-30 parts of sodium carboxymethyl cellulose, 0.1-5 parts of polyethylene oxide with a molecular weight of 1.5 million to 2 million Daltons, 2-16 parts of sodium hyaluronate with a molecular weight of 1.2 million to 2 million Daltons, and 80-100 parts of water for injection. The preparation method includes alkalization of natural plant fibers, carboxymethylation modification of natural plant fibers, dissolution and mixing of the anti-adhesion solution, emulsification treatment, and sterilization and filling. High-purity sodium carboxymethyl cellulose is prepared from natural plant fibers through a modification process, serving as the basic framework of the adhesive solution. In vivo, it can remain incompletely degraded during the adhesion cycle, ensuring the stability of the physical barrier. Sodium hyaluronate with a molecular weight suitable for anti-adhesion effect and polyethylene oxide that increases the strength and adhesion of the irrigation solution are screened to form a synergistic system with sodium carboxymethyl cellulose that degrades synchronously and has complementary strength.

The application discloses a high-temperature high-power hybrid integrated device and a packaging method thereof, and belongs to the technical field of integrated circuits. The device comprises a circuit module (1) and a heat storage unit box body (2) provided with an inner cavity. A recess (21) is arranged on the surface of the heat storage unit box body (2), the circuit module (1) is fixedly connected in the recess (21), the circuit module (1) is in contact with the heat storage unit box body (2) to form heat conduction, a first filling body (3) composed of phase change heat storage materials is arranged in the heat storage unit box body (2), and a heat insulation layer (6) is arranged on the outer surface of the heat storage unit box body (2). The application effectively improves the heat dissipation capacity and high-temperature resistance of the circuit module, simultaneously reduces the temperature of internal components of the circuit, enables the circuit to normally work in the case that components and materials with a rated working temperature lower than an ambient temperature are adopted, and avoids the adoption of valuable high-temperature components and materials, so that the economic cost of the circuit module is reduced as a whole.

A dental adhesive composition including: a (meth)acrylate having an acid group; and a linear siloxane represented by a general formula (1). In the general formula (1), X1 to X6 are independently an alkyl group or an ethylenically unsaturated group having 1 or more and 6 or less carbon atoms; m is an integer of 0 or more and 500 or less; in a case where m is 2 or more, X3 and X4 are same or different for each repeating unit; Y1 and Y2 are independently a linear hydrocarbon group or a branched hydrocarbon group having 1 or more and 20 or less carbon atoms having an ether bond or having no ether bond; Z1 to Z4 are independently hydrogen atom or an ethylenically unsaturated group; and at least one of X1 to X6 or Z1 to Z4 is an ethylenically unsaturated group.

The present disclosure provides a separator for a lithium secondary battery, including a porous polymer substrate; and an inorganic coating layer present on at least one surface of the porous polymer substrate, the inorganic coating layer including a core-shell composite particle precursor, where the core-shell composite particle precursor includes a core portion and a shell portion covering at least a portion of a surface of the core portion, where the core portion includes inorganic particles, and where the shell portion includes an acrylic monomer or oligomer.

The utility model relates to the technical field of aluminum alloy sections, in particular to a high-strength aluminum alloy section for a combined energy-saving curtain wall, which comprises a stand column, a plurality of rib columns distributed at equal intervals are arranged on the inner side of the stand column, and ribs are arranged on the periphery of each rib column. The cross beams are located on the front side and the rear side of the stand column, fixing cylinders are arranged on the inner sides of the cross beams, and reinforcing fins are fixedly connected between the peripheries of the outer surfaces of the fixing cylinders and the inner walls of the cross beams. Under the action of the rib columns, the ribs and the honeycomb fiber braid layer, the aluminum alloy profile has the advantages of high strength and large bearing load, and the problem that the aluminum alloy profile for the combined energy-saving curtain wall possibly has insufficient strength in certain specific application scenes is solved; in particular, in a large-span, high-wind-pressure or complex-modeling curtain wall system, most traditional aluminum alloy sections are designed into single cavities, and deformation is prone to occurring when large loads are borne.

The application relates to the technical field of electroplating, and discloses a chromium electroplating process for improving the hardness of a connector terminal, which comprises the following steps: performing surface pretreatment on the connector terminal, removing surface impurities through ultrasonic cleaning and micro-etching treatment; performing heating treatment on the connector terminal; performing electroplating treatment on the connector terminal by using an electroplating solution comprising trivalent chromium salt, boron nitride nanoparticles, ferroferric oxide nanoparticles, nickel ions, sodium dichromate and chromium alloy additives, so as to form a chromium plating layer; performing passivation treatment on the plating layer; performing low-temperature treatment on the plating layer; and spraying a protective layer on the chromium plating layer. Through the trivalent chromium salt and the sodium dichromate, the trivalent chromium salt is used to reduce hexavalent chromium ions into trivalent chromium, the toxicity of the hexavalent chromium is reduced, the sodium dichromate is used to provide a stable chromium source, the deposition of chromium elements in the electroplating process is ensured, the pollution of hexavalent chromium to the environment and the harm of hexavalent chromium to the health of operators are solved, and the environmental protection and safety of the electroplating process are improved.

The utility model discloses a metal multilayer structure capable of reducing stress influence. The metal multilayer structure comprises a first metal layer and a second metal layer which are arranged adjacently. A metal transition layer is arranged between the first metal layer and the second metal layer; the metal transition layer comprises a first transition layer, a second transition layer, a third transition layer and a fourth transition layer which are sequentially arranged between the first metal layer and the second metal layer; the first transition layer and the third transition layer are made of the same material as the first metal layer; and the second transition layer and the fourth transition layer are made of the same material as the second metal layer. According to the invention, the metal transition layer which is of a sandwich layer structure and is formed by alternating two metals is arranged between the two layers of metal structures, so that the adhesion between the metal layers can be greatly improved, and the stress of a metal connection interface is reduced.

The application discloses an electrode for electric spark machining of a micro-hole with a large depth-diameter ratio and a preparation method thereof, and belongs to the technical field of tool electrode preparation. The electrode comprises a tungsten wire rod, and the diameter of the tungsten wire rod is 0.1-0.4 mm. The tungsten wire rod is characterized in that a uniform and stable zirconium oxide insulation layer is arranged on the peripheral wall of the tungsten wire rod. The electrode selects the stable zirconium oxide layer as the insulation layer, which can enhance the insulation property of the peripheral wall of the electrode. On one hand, the electrode can reduce the discharge removal between the peripheral wall of the electrode and the side wall of the hole in the electric spark machining process, thereby improving the forming precision of the micro-hole. On the other hand, the electrode can reduce the skin effect of the current in the electrode and increase the current density of the center of the end surface of the electrode. Meanwhile, the end surface of the insulation layer has the conductivity in the electric spark discharge, electric spark discharge is generated to remove the material, and the electric spark machining efficiency is improved.

The present application relates to a kind of RB-SiC surface femtosecond laser modification pretreatment method, by femtosecond laser to the preset Si powder on RB-SiC surface is modified and handled, to improve the polishing efficiency of RB-SiC surface.The present application can directly carry out surface modification to the cutting surface of RB-SiC, Si powder prepositioned on the surface of RB-SiC is rapidly oxidized under the action of the high peak power of femtosecond laser, and with the deepening of the depth of oxidation, so that the modified layer after oxidation forms bonding with RB-SiC matrix, obtains a modified coating with high adhesion strength, high quality.The method has the advantages of simple operation, low requirement to RB-SiC matrix and working environment, can be directly carried out in air, etc., can be applied to the surface modification of RB-SiC with complex surface shape, can significantly improve its polishing efficiency.

The invention discloses food paper based on plant fibers and PLA (polylactic acid) lamination and a preparation method of the food paper, and belongs to the technical field of polylactic acid lamination papers.Acrylate monomers and organic silicon modified alkyl acrylate containing flexible chain segments are subjected to in-situ polymerization on TEMPO oxidized nano-cellulose under a controllable catalytic system, so that the food paper is obtained; the preparation method comprises the following steps: polymerizing a cellulose skeleton, anchoring a polymerized chain segment on the cellulose skeleton in a chemical manner, constructing an organic interface layer with certain flexibility on the surface of nano-cellulose to obtain a modified nano-cellulose filler with a stable structure, blending the modified nano-cellulose with polylactic acid to prepare a film spraying master batch, and combining the film spraying master batch with plant cellulose base paper through a film spraying process to prepare the plant cellulose composite film. The preparation method is simple and easy to operate, the food paper which is compact in lamination and uniform in attachment is obtained, stable attachment of the paper base and the PLA lamination is achieved while the bio-based and degradable characteristics of the material are kept, interface defects and delamination risks are reduced, the mechanical property and use reliability of the food paper are improved, and the food paper is suitable for food packaging application.

The application belongs to the technical field of textile fabric functional finishing, and particularly relates to a preparation method of super-hydrophobic fabric. The preparation method of the super-hydrophobic fabric comprises the following steps: pretreating cotton fabric by using a zinc ion mixed solution of sodium hydroxide to obtain cotton fabric containing a zinc oxide seed layer; then immersing the cotton fabric containing the zinc oxide seed layer in a mixed solution of a zinc nitrate aqueous solution and a hexamethylenetetramine aqueous solution to obtain a ZnO composite fabric; and finally using the bridging effect of a mercapto silane coupling agent to bond low-surface-energy polydimethylsiloxane and octavinyl octasilsesquioxane to the cotton fabric to obtain the super-hydrophobic fabric. The above method can endow the fabric with excellent hydrophobicity and improve the washing resistance of the hydrophobic effect.

The utility model belongs to the technical field of communication safety, and particularly relates to an anti-interference infrared laser one-way leading-in device suitable for high-safety secret communication and other data isolation transmission scenes, the anti-interference infrared laser one-way leading-in device comprises a receiver closed shell, a blocking film is arranged on the inner side wall of the receiver closed shell, and a narrow optical window is formed in one side of the receiver closed shell. A laser receiving device is arranged on the inner wall in the direction of the other side, opposite to the narrow optical window, of the receiver closed shell, and a multi-layer structure filtering membrane and a secondary filtering grid are sequentially arranged between the narrow optical window and the laser receiving device. According to the utility model, through dual mechanisms of optical angle limitation and spectral absorption, an interference path is cut off structurally, the anti-interference capability is improved remarkably, and the risks of scattered light interference and transmission information eavesdropping are reduced greatly.

This invention discloses a method for preparing odor-neutralizing spray granules for sports fields, relating to the technical field of odor-neutralizing spray granules. The steps are as follows: S1 Pre-treatment of waste rubber powder and thermoplastic elastomer, drying of inorganic fillers; S2 Mixing rubber powder and elastomer in an internal mixer, adding plasticizers and activators to prepare a base rubber compound; S3 Modification by adding odor-neutralizing and formaldehyde-removing agents under negative pressure; S4 Plasticizing and extruding the rubber compound into strips using a twin-screw extruder; S5 Water cooling followed by pelletizing to obtain a coarse product; S6 Screening to remove unqualified particles, followed by hot air drying and activated carbon adsorption for secondary odor neutralization to obtain the finished product. The spray granules prepared by this invention have a long-lasting odor-neutralizing effect, good environmental performance, and excellent elasticity, wear resistance, and adhesion strength; the process is highly controllable, the product has uniform particle size, good aging resistance, and is suitable for the spraying needs of various sports fields, while realizing the resource utilization of waste rubber, possessing both practical and environmental value.

This invention discloses a hydrogel patch for repairing gastric perforation and its preparation method, belonging to the field of biomedical materials technology. The preparation method is as follows: Acryloylvaline, acrylic acid, methylenebisacrylamide, compound A, and a photoinitiator are dissolved in an alcohol solvent, and after defoaming, a precursor solution is obtained. The precursor solution is then placed in a mold and cured by ultraviolet light. The resulting hydrogel is immersed in a hydrochloric acid solution to displace the alcohol solvent, yielding the hydrogel patch for repairing gastric perforation. The hydrogel patch provided by this invention has advantages such as resistance to strong acid corrosion, good biocompatibility, low swelling rate, and stable adhesion under fluctuating pH conditions. This strong and stable adhesion ensures that the hydrogel can adhere reliably and persistently to the gastric perforation site in a dynamic gastric acid environment, providing a stable platform for drug delivery, thereby potentially shortening surgical time and promoting wound healing.

The invention relates to the technical field of recycled asphalt, and particularly discloses a high-temperature-resistant large-dosage RAP recycled asphalt mixture and a gradient activation preparation method thereof, and the recycled asphalt mixture comprises the following components in parts by weight: 70-90 parts of an RAP material, 5-26 parts of a new aggregate, 4-5 parts of SBS modified asphalt and 0.04-0.05 part of a composite regenerant. The composite regenerant and the bio-oil-based regenerant provided by the invention can recover the flexibility of the aged asphalt; after the silane coupling agent is hydrolyzed, silicon hydroxyl (Si-OH) formed by the silane coupling agent and the bio-oil-based regenerant can be bonded with hydroxyl (Si-O-Si bond) on the surface of the aggregate to form a bonded network, so that the interface adhesion strength is improved, the interface slippage is reduced, the skeleton of the mixture is more stable, the stripping resistance of the interface is enhanced, the dynamic stability and the water stability are improved, and the service life of the mixture is prolonged. And after the recycling agent recovers the flexibility of the asphalt, a bonding network formed by the silane coupling agent endows the recycled asphalt mixture with a high-elasticity characteristic, and the risk of fatigue cracking is reduced.

The utility model discloses spoke end conical sheet adhering equipment which is used for adhering a conical sheet to the end of a spoke and comprises a machine frame, a driving device and a driving device. The adhesion assembly is arranged on the rack and is provided with a placing part and a pressing head; the placing part is suitable for flatly placing the conical sheet; the pressing head is positioned above the placing part and is suitable for reciprocating along a vertical first direction relative to the rack; the displacement assembly is arranged on the rack and is provided with a containing groove and a displacement mechanism; the containing grooves are suitable for containing the spokes and enabling the ends of the spokes to be exposed in the second direction, and the second direction is perpendicular to the first direction. The displacement mechanism drives the spokes to do reciprocating motion in the first direction, so that the spokes are located on the placing parts and adhere to the conical sheets; and the pressing head moves downwards and presses the end part of the spoke after the conical sheet is adhered to the end part of the spoke. According to the adhesion equipment, the conical sheets can be automatically adhered to the ends of the spokes, the production efficiency is improved, and the labor cost is reduced.

The application belongs to the technical field of high polymer materials, and relates to a multifunctional hydrogel as well as a preparation method and application thereof. The preparation raw materials of the multifunctional hydrogel include monomers, metal ion salts, a photoinitiator, a crosslinking agent and a solvent, and the monomers include acrylamide monomers, acrylic monomers and vinyl pyrrolidone. The acrylamide monomers, the acrylic monomers and the vinyl pyrrolidone are selected and matched, metal ion salts are introduced for coordination complexation, the photoinitiator and the crosslinking agent are supplemented, and thus the obtained multifunctional hydrogel can have excellent tensile properties, self-repairing properties and adhesion properties to various materials.

This invention relates to a comfortable, breathable, water-repellent, and anti-icing polyester fabric, its preparation method, and its applications. The preparation method of this polyester fabric includes the following steps: adding photothermal nanomaterials to a polar protic solvent and sonicating; pre-treating the polyester fabric with plasma surface etching; immersing the pre-treated polyester fabric in a nanoparticle dispersion, sonicating, and drying to obtain a polyester fabric coated with photothermal nanomaterials; adding a fluorine-free low surface energy material and the photothermal nanomaterials to a polar protic solvent and sonicating to obtain a composite dispersion; immersing the polyester fabric coated with photothermal nanomaterials in the composite dispersion, sonicating, drying, and plasma treating to obtain the final product. This polyester fabric not only has excellent water-repellent and anti-icing properties but also excellent wearing comfort, meeting people's requirements for the performance of outdoor functional textiles and showing great market application prospects.

The invention discloses a mesoscopic phase enhanced polyphenol-based aggregate adhesive and a preparation method thereof, and relates to the technical field of medical tissue adhesives. The preparation method of the adhesive comprises the following steps: step 1, preparing a polyphenol compound into a solution A; 2, preparing an epoxy group high polymer material into a solution B; 3, diluting a silanization reagent with acidic deionized water to obtain a solution C; and 4, mixing the solution B and the solution C, adding the obtained mixture into the solution A, and carrying out oscillation centrifugation to obtain the mesoscopic phase enhanced polyphenol-based aggregate adhesive. According to the preparation method, an organic-inorganic hybrid composite phase body with a mesoscopic phase structure is assembled around an epoxy polymer material phase after being hydrolyzed by a silanization reagent, so that the hydrogen bond and hydrophobic interaction between the epoxy polymer material phase and a polyphenol compound are enhanced. The prepared adhesive has high adhesion on the tissue surface while having the aim of being degradable, and can be used as a good medical tissue adhesive.

The utility model discloses a kind of transfer film with digital printing pattern, from top to bottom sequentially include: base film layer, release layer, bearing layer group, digital graphics layer, connecting layer and hot melt adhesive layer, digital graphics layer is set to the lower end surface of bearing layer group by digital printing or digital spraying, connecting layer connects hot melt adhesive layer and digital graphics layer, digital graphics layer can be variable graphics and color is used flexibly, without plate making, production preparation is flexible, greatly facilitate the production requirement of small batch or short construction period, by setting bearing layer group for the spraying or printing of digital graphics layer, the stability of the graphics of digital graphics layer can be improved, and by connecting layer connecting hot melt adhesive layer and digital graphics layer, the adhesion strength between ink and hot melt adhesive layer is improved, reduce the case that digital graphics falls off or deforms when heat transfer printing occurs.

This utility model relates to the technical field of wall corner protectors, and discloses a corner protector strip comprising kraft paper, with a vinyl plastic sheet adhered to the top of the kraft paper, and a face paper adhered to the top of the vinyl plastic sheet. Both the face paper and the vinyl plastic sheet have grooves, the depth of which is three-quarters the thickness of the vinyl plastic sheet, forming two adjacent vinyl plastic sheets. The thickness at the connection between the two vinyl plastic sheets is one-quarter of the thickness of the vinyl plastic sheet, and the folding angle formed by the two vinyl plastic sheets corresponds to the wall angle of the wall surface or drywall. In this utility model, the perforation allows mortar to enter the perforation during installation, increasing the adhesion between the corner protector strip and the drywall or wall edge, thus improving the overall adhesion strength between the corner protector strip and the wall surface. The flexibility of the kraft paper reduces the occurrence of bulging and cracking of the corner protector strip.

The invention discloses a high-strength adhesive as well as a preparation method and application thereof, and belongs to the technical field of biological materials. The high-strength adhesive comprises the following raw materials: lipoic acid, metal ions and lactate. The preparation method of the high-strength adhesive comprises the following steps: dispersing lipoic acid and metal ions in lactate to form a mixed dispersion liquid; and heating and stirring the mixed dispersion liquid, and then cooling to room temperature to obtain the high-strength adhesive. The invention discloses a composition containing the high-strength adhesive and active ingredients and a preparation method of the composition. The invention also discloses an application of the high-strength adhesive or composition in preparation of a tissue repair material or / and a drug delivery carrier. The adhesive disclosed by the invention integrates the functions of strong underwater adhesion, biodegradability, anti-inflammatory and anti-oxidative degradation products, lasting adhesive power and extensibility, and provides an innovative solution with excellent performance and rich functions for clinic.

The invention discloses a nano synergistic modified urea-formaldehyde resin adhesive solid wood composite floor and a preparation method, the composite floor sequentially comprises a protective layer, a solid wood surface layer, a core layer and a bottom layer, and the layers are bonded, compounded and molded through a nano synergistic modified urea-formaldehyde resin adhesive. The nano synergistic modified urea-formaldehyde resin adhesive is prepared from the following raw materials in parts by weight: 100 parts of a urea-formaldehyde resin matrix, 0.5-2 parts of nano titanium dioxide, 3-8 parts of melamine, 0.1-0.3 part of a dispersing agent, 0.8-1.5 parts of a curing agent and 5-15 parts of flour. Nano titanium dioxide in the modified urea-formaldehyde resin adhesive used in the composite floor has an efficient catalytic decomposition effect on free formaldehyde in the urea-formaldehyde resin adhesive, the free formaldehyde can be converted into harmless water and carbon dioxide, the free formaldehyde release amount can be as low as 0.02 mg / m or below through detection and is far superior to the 0.124 mg / m limit value specified by the GB 18580-2025 standard, and the composite floor has the advantages of being environmentally friendly, safe and reliable. And a healthy and safe living environment is provided for consumers. The invention further provides a preparation method of the solid wood composite floor.

The utility model relates to the technical field of decorative base paper, in particular to high-wear-resistance decorative base paper which comprises a base paper body, a base layer is arranged at the bottom of the base paper body, a fireproof layer is arranged on the upper side of the base layer, and a reinforcing layer is arranged on the upper side of the fireproof layer. A nano wear-resistant agent and carbon fiber components are added into the first wear-resistant layer, a compact structure is formed on the surface of the paper by adding the nano wear-resistant agent, the carbon fiber and other components, the wear resistance is remarkably improved, alum is adopted as a bridging agent to enhance the fiber bonding degree, and the anionic neutral dispersed rosin size is matched to improve the bonding strength and reduce the paper shrinkage rate. The second wear-resistant layer is a melamine resin coating, and is cured at high temperature after being impregnated with melamine resin to form a hard and scratch-resistant surface layer, so that the overall wear resistance is higher and the service life is longer through the combination of the first wear-resistant layer and the second wear-resistant layer.

The application relates to an antibacterial adhesive material and application thereof, relates to the technical field of adhesive materials, and solves the problem that the existing adhesive material is not good in function in a wet state environment. The coagulum formed after mixing cationic hydrochloride and anionic small-molecule sodium thioctic acid salt in a buffer solution and centrifugation is prepared through dehydration and solidification; the sodium thioctic acid salt is obtained through the following steps: dissolving sodium hydroxide in deionized water, adding alpha-thioctic acid into the solution in batches under intense stirring, filtering the obtained mixture with a polytetrafluoroethylene syringe filter, and freeze-drying; the cationic hydrochloride is polylysine hydrochloride, polyhexamethylene biguanide hydrochloride or branched polyethyleneimine hydrochloride. The application can be applied to medical antibacterial dressings, tissue adhesives or cultural relic restoration, and the adhesion is activated by physiological saline, a buffer solution or water before use.

This invention discloses a composite conductive organic hydrogel, prepared by the following method: First, acrylamide, carboxylated cellulose nanofibers, and carboxymethyl chitosan are copolymerized in an aqueous glycerol solution to obtain a pregel. Then, pyrrole is incorporated into the pregel, and subsequently, pyrrole is oxidized using a ferric chloride solution, causing it to polymerize in situ into polypyrrole. The hydrogel of this invention uses polyacrylamide as the network framework, incorporating carboxylated cellulose nanofibers and carboxymethyl chitosan, and polymerizing polypyrrole in situ to form a multi-layered cross-linked network. The hydrogel of this invention possesses excellent mechanical properties, strong adhesion and easy peeling, high electrical conductivity, excellent freeze resistance, and biocompatibility. It can be used as a high-performance flexible strain sensor for human motion monitoring or as a bioelectrode for electrocardiogram signal acquisition, showing broad application prospects in wearable electronics and health monitoring.

The utility model discloses a baffle structure and vacuum coating equipment, include: substrate, panel with detachable connection with the substrate, wherein, the panel has the blocking surface for blocking metal vapor, the blocking surface is the non -smooth surface of improving the adhesion strength, the utility model discloses above -mentioned structure, and the metal layer of deposition can better adhere to the blocking surface, effectively reduce the probability of metal layer peeling to evaporating boat, and the blocking surface cleaning is also more convenient.