13results about How to "Improve adhesion strength" patented technology

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 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 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.

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.

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 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.

The application discloses an anti-falling and anti-aging agent and a preparation method and application thereof. The anti-falling and anti-aging agent comprises the following raw materials: a styrene-butadiene-styrene copolymer, an ethylene-vinyl acetate copolymer, a styrene-butadiene rubber, polyethylene oxide, resin, alkyl ammonium chloride, a nitrogen-containing aromatic compound, a p-phenylenediamine compound, a methacrylate compound, a coupling agent and an antioxidant. The preparation method of the anti-falling and anti-aging agent comprises the following steps: uniformly mixing the above materials, and after mixing and extruding and granulating, the anti-falling and anti-aging agent is obtained. The anti-falling and anti-aging agent is in a granular form, is used in airport runway asphalt, can significantly improve the adhesion strength of the airport runway asphalt, improves the anti-falling performance, improves the heat aging resistance of the asphalt, and has a strong adaptability to the high-temperature wake flow environment of an airplane.

This invention discloses a resistive impedance imaging tactile sensor for underwater structure detection, comprising a flexible conductive sensing layer and an insulating encapsulation layer arranged sequentially from the inside out. The flexible conductive sensing layer includes an electrode layer and a flexible conductive layer, wherein the surface of the electrode layer has a microgroove structure. The flexible conductive layer and the electrode layer are stacked and embedded in the microgroove to form a mechanical interlocking structure. The insulating encapsulation layer includes a flexible insulating layer and a shielding layer, which are bonded together without adhesive to form a sealed encapsulation structure. This sensor achieves highly reliable interlayer bonding and sealing without adhesives, effectively avoiding performance failure caused by adhesive hydrolysis, interface delamination, or moisture penetration in the underwater environment. It is suitable for long-term, stable underwater resistive impedance imaging detection.