24results about How to "Improve bonding fastness" patented technology

The application discloses synthetic leather composite silica gel humanoid robot simulation skin and a preparation method and application thereof, and belongs to the humanoid robot surface material application field. The skin comprises, from outside to inside, a synthetic leather layer with bionic texture, a water-based polyurethane interface layer with a thickness of 0.03-0.06 mm, and a silica gel layer. The water-based polyurethane interface layer is composed of a water-based polyurethane-silicone block copolymer with a hydroxyethyl acrylate end cap and a side chain containing a vinyl group. In the preparation, the water-based polyurethane interface layer is first formed on the back of the synthetic leather, then a platinum gold catalyst is sprayed on the interface and a mold, and finally the addition type liquid silica gel containing a silicon hydrogen bond is compounded in the mold and is cured at 24-26 DEG C and 40%-60% humidity. Peeling damage is realized to occur in the silica gel body; meanwhile, the interface layer and the synthetic leather cooperatively constitute a double barrier, so that the silicon oil exosmosis is avoided. The product has strong comprehensive advantages, and the process is environment-friendly and low in cost.

The invention discloses a continuous flexible conductive material preparation device and method.The device comprises a continuous flexible material, a guide roller and a conductive coating assembly, the assembly is sequentially provided with a tackifying unit, a powdering unit, a curing unit, a chemical plating unit and a post-processing unit in the material conveying direction, the center lines of conveying channels of all the units are collinear, and the interface gap is smaller than or equal to 2 mm. The micro-nano metal powder seed source is planted through the powdering device, rapid growth and closing of the micro-nano metal powder seed source are achieved through chemical plating after solidification, a compact conductive network is constructed, and a finished product is obtained.The short-process, rapid, efficient and environment-friendly preparation of the continuous flexible high-conductivity material can be achieved, the prepared material is low in cost, good in conductivity and high in durability, material transmission deviation is avoided, and the continuous flexible high-conductivity material can be obtained. The method improves the compactness of the coating and the consistency of products, recovers redundant adhesion liquid and catalyst particles, reduces the production cost, and is suitable for preparation of continuous flexible conductive materials such as conductive yarns, fabrics and films.

The invention discloses a water-resistant and oil-resistant paper-based coating, a preparation method and a water-resistant and oil-resistant paper product, and belongs to the technical field of paper-based packaging materials. Hydrophobic modification is achieved through the esterification reaction of stearic acid and the chemi-mechanical pulp CNF, meanwhile, high-pressure homogenization treatment is combined, it is ensured that the hydrophobic chemi-mechanical pulp CNF is evenly dispersed, and the hydrophilic problem of the CNF is fundamentally solved; meanwhile, the prepared oil-proof agent takes soy isolate protein as a substrate, sodium-based montmorillonite is matched to form a synergistic oil-proof system, and a hydrophobic chemithermomechanical pulp CNF dispersion liquid and an oil-proof agent dispersion liquid are used for constructing a coating on the surface of a paper base, so that the coating has excellent water resistance and oil resistance at the same time. The coating prepared by the invention has good compatibility with a paper-based material, and subsequent paper can be degraded along with the paper-based material after being discarded, so that the problem of white pollution caused by a polyethylene spraying film is thoroughly abandoned; the chemical-mechanical pulp CNF raw material has the green property of being degradable and renewable, so that the green, environment-friendly, safe and sustainable coating system is realized.

The invention discloses a papermaking dry strength agent preparation method, which comprises: S1, dissolving chitosan in an acidic aqueous solution to form a chitosan glue solution, and removing oxygen; s2, dropwise adding a high-concentration acrylamide solution, a water-phase monomer mixed solution and an initiator solution for graft copolymerization to obtain a branched prepolymer; s3, a cross-linking agent is added for a cross-linking reaction, and a micro-cross-linked structure is formed; primary amino groups on a chitosan chain are terminated, and branched amphoteric chitosan-polyacrylamide dry strength agent mother liquor is obtained; s4, carrying out composite dispersion on the composite material and a nanocellulose material, and diluting to obtain a diluent; and S5, after a paper machine slushing pump and before a pressurized screen, firstly adding an anionic garbage capturing agent for pre-flocculation, then continuously feeding the diluent, and stirring to obtain the product. According to the papermaking dry strength agent prepared by the preparation method disclosed by the invention, the interface bonding strength of the papermaking dry strength agent to fibers and the adaptability and use efficiency of the papermaking dry strength agent in a complex wet end environment are remarkably improved, and the requirements of the modern papermaking industry on high-performance and high-stability dry strength agents can be met.

The application relates to the technical field of hoisting belts, and provides a flexible bearing material for a fatigue-resistant high-strength hoisting tool and a preparation method thereof. The material takes UHMWPE fibers or aramid fibers as a substrate, is activated by low-temperature oxygen plasma, is sequentially subjected to glycidyl methacrylate grafting to introduce epoxy sites, end-amino hyperbranched PAMAM chain extension to construct a multistage active interface, is subjected to a silane coupling agent containing a benzotriazole group to construct a weather-resistant layer, is then loaded with a negative nano-titanium dioxide and polyethylene imine composite system, and is finally crosslinked and solidified by ethylene glycol diglycidyl ether. The application strengthens the interface bonding force through a multistage covalent bonding surface modification structure, simultaneously improves the fatigue resistance, weather resistance and wear resistance of the material, and solves the problems of weak interface bonding of existing hoisting bearing materials, easy wear and aging in cyclic service, and short fatigue life.

The application relates to the technical field of medical textile materials, and discloses an antibacterial and breathable medical gauze sheet, which comprises a base material and an antibacterial functional layer loaded on the base material, and the functional layer is formed by chemical reaction of carboxymethyl chitosan, tannic acid, boric acid, citric acid and zinc ions. Through boric acid complexation and citric acid competitive coordination, a double interpenetrating network structure of covalent bonds and coordination bonds is formed inside and outside the gauze fibers. The structure effectively inhibits the oxidative browning of tannic acid and eliminates the difference in the skin-core distribution of the functional components. The obtained gauze sheet is not only high in whiteness and good in breathability, but also has excellent washing fastness and long-acting and broad-spectrum antibacterial performance.

The invention belongs to the technical field of graphene, and particularly relates to a graphene oxide and resistance wire compounded flexible heating pad. The resistance wire is used as a main heating body to provide a basic heat source, and meanwhile, an efficient three-dimensional heat conduction network is constructed through the graphene modified layer. The network not only can quickly and uniformly disperse heat generated by the resistance wire, but also can convert part of heat energy into far infrared radiation with the wavelength of 6-14 microns. By means of the composite heat transfer mode, the overall electric-heat conversion efficiency is greatly improved, reaches 95% or above and is far better than that of a traditional resistance wire heating pad (60-70%), and electric energy is effectively saved.

This invention discloses a recoatable ceramic coating, its preparation method, and its application in honeycomb non-stick cookware. The primer, calculated at 100%, contains: 20-22% silica sol, 3-4% 1% NaOH solution, 10-12% pigment, 8-10% filler, 1-1.5% dispersant, 18-20% methyltrimethoxysilane, 2-4% KH560, 8-10% PAI, 3-5% isopropanol, 3-5% acetic acid, and 1-2% leveling agent. The topcoat, calculated at 100%, contains: 30-35% silica sol, 25-30% methyltrimethoxysilane, 3-5% KH560, 8-10% PAI, 3-5% isopropanol, 3-5% acetic acid, 2-4% leveling agent, and 2-4% non-stick additive; the balance is water. This invention solves the problems of recoating the cured ceramic coating, interlayer adhesion, and adhesion strength between the coating and raised metal parts while maintaining the honeycomb non-stick cookware manufacturing process.

This invention provides an antistatic fabric based on modified acrylic fiber and its preparation process, belonging to the field of textile fabric technology. The process includes the following steps: first, preparing modified acrylic fiber and organosilicon quaternary ammonium salt modified CNW; then, mixing and stirring the modified acrylic fiber, DMF, and organosilicon quaternary ammonium salt modified CNW to obtain a spinning solution; mixing anhydrous ethanol and organosilicon quaternary ammonium salt modified CNW, and ultrasonically treating to obtain a dispersion; in a conjugate electrospinning device, feeding the spinning solution and dispersion into two sets of needles respectively, and electrospinning the spinning solution to form nanofibers under the action of a high-voltage electric field; feeding cotton yarn into the electric field region, causing the nanofibers to spirally wind around the surface of the cotton yarn and form a coating shell; and electrostatically spraying the dispersion to deposit the organosilicon quaternary ammonium salt modified CNW onto the surface of the coating shell; collecting and winding to obtain a fiber core-spun yarn, and weaving the fiber core-spun yarn to obtain the antistatic fabric. This invention can improve the antistatic performance of the fabric while also possessing certain antibacterial properties.

The application discloses an ultra-thin woven pile electronic package material fabric and a preparation method thereof. The fabric is interwoven by warp yarn, weft yarn and terry yarn through satin weave, the thickness of the fabric is 0.20-0.25 mm, the fabric surface has pile formed by the terry yarn after sanding, the height of the pile is 0.05-0.10 mm, and the pile height H and the fabric thickness T satisfy H / T<=0.5. The warp yarn and the weft yarn are high-shrinkage polyester, the terry yarn is low-shrinkage polyester, and the root of the terry yarn is clamped and fixed by the warp yarn and the weft yarn in the shrinkage state. The application realizes accurate control and firm anchoring of the pile under the thickness of 0.20-0.25 mm through the cooperation of the satin weave and the high-shrinkage warp yarn and weft yarn, so that the woven pile fabric has the performances of ultra-thin, soft, size stability and non-falling of the cut edge, and the problems of the existing ultra-thin pile fabric, i.e. the pile penetrating the fabric or easily falling off, are solved.

The invention relates to the field of adhesives, and particularly discloses an adhesive for a water-based EAU heat preservation and decoration integrated plate and a preparation method of the adhesive. The adhesive for the water-based EAU heat preservation and decoration integrated plate comprises a component A and a component B, wherein the mass ratio of the component A to the component B is 1: (1.2-2); the component A is prepared from the following raw materials: water, acrylic polymer emulsion, nano calcium carbonate, silica powder, a cross-linking agent, a coalescing agent, hydroxyethyl cellulose ether, an anti-freezing agent, a dispersing agent, a defoaming agent, a thickening agent and a sterilizing agent; the component B is prepared from the following raw materials in percentage by mass: cement, quartz powder, quartz sand, a water reducing agent, a retarder and an early strength agent; the preparation method comprises the following steps: respectively preparing the component A and the component B, and uniformly mixing the component A and the component B according to the ratio. The adhesive for the water-based EAU heat preservation and decoration integrated plate has the advantages of being low in VOC, pollution and emission, safe and environmentally friendly.

This utility model relates to a sealing strip pressing device, comprising: a frame having a pressing channel; a pressing seat slidably disposed in the pressing channel along a first direction, and having a pressing groove recessed inward therein for accommodating the sealing strip, the pressing groove having an arc-shaped structure; and a pressing head slidably disposed in the pressing channel along a second direction, and having a pressing block that mates with the pressing groove; wherein the first direction is perpendicular to the second direction. This sealing strip pressing device, by setting an arc-shaped pressing groove, allows for better conforming to the outer contour of the sealing strip, overcoming the uneven pressing problem caused by traditional planar pressing, and improving the tape bonding quality. Furthermore, because the pressing block on the pressing head matches the pressing groove and slides along a direction perpendicular to the pressing seat, a top-down wrapping pressing can be achieved, reducing the risk of tape misalignment, bubbling, or curling.

The utility model relates to a kind of soft rubber tube based on composite structure reinforcement, including rigid base material piece and soft coating, and the outer periphery of rigid base material piece is equipped with first interlayer groove, first interlayer groove has the outer surface and inner surface oppositely arranged along the direction of thickness, and through hole is set on first interlayer groove, and the through hole is through outer surface and inner surface;Soft coating injection molding is formed on the outer periphery of rigid base material piece, and fills first interlayer groove and forms anchoring structure, when injection molding, melt flows to the side of rigid base material piece away from soft coating by through hole, and after cooling, it forms the encapsulating layer integrated with rigid base material piece.The utility model constructs basic physical binding force by concave-convex fitting, and soft coating forms the effect of " front and rear wrapping + mechanical lock catch " to rigid base material piece, avoids the peeling risk of single surface combination, significantly improves the binding firmness, and there is no cracking, loosening at the joint, solves the temperature sensitivity problem of traditional process.

The utility model discloses a kind of leakage-proof multilayer composite bulk bags, including bag body, bag body top is equipped with inlet, bottom is discharge port, bag body is double-layer structure, double-layer structure includes with the inner layer structure of powder particle contact in bag body and the outer layer structure of contact with outside, inner layer structure is the linear low density polyethylene film of thickness 0.08-0.15mm is formed dense barrier layer by biaxial stretching processing, its surface aperture is less than or equal to 50 μm;Outer layer structure is polypropylene woven cloth substrate surface composite wear-resistant coating, substrate grammage is greater than or equal to 150g / m 2, warp breaking strength is greater than or equal to 80kN / m, weft breaking strength is greater than or equal to 70kN / m;Inner layer structure and outer layer structure realize full surface composite by hot melt adhesive bonding layer, hot melt adhesive coating amount is 8-12g / m 2, adhesive peel strength is greater than or equal to 6N / cm.The utility model adopts biaxial stretching LLDPE film inner layer, can block 200 mesh below superfine powder leakage, combined with high-strength PP woven cloth outer layer to guarantee tensile property, realize full surface composite by quantitative hot melt adhesive coating, prevent interlayer separation and joint leakage.

This invention discloses a waterproof and breathable polyurethane material and its preparation method, relating to the field of polyurethane material technology. The waterproof and breathable polyurethane material includes a base layer, a middle layer, and a top layer; the thickness ratio of the base layer, middle layer, and top layer is (5-10):(6-10):(4-8); the base layer is selected from regenerated cellulose fiber and synthetic fiber; the middle layer, by weight, contains the following components: 100 parts of waterborne polyurethane resin, 0.01-0.5 parts of wetting and leveling agent, 1-5 parts of foam stabilizer, and 0.01-0.5 parts of isocyanate curing agent; the top layer, by weight, contains the following components: 100 parts of waterborne polyurethane resin, 0.01-0.2 parts of scratch-resistant agent, 0.01-0.5 parts of wetting and leveling agent, 1-5 parts of foam stabilizer, and 0.01-0.5 parts of isocyanate curing agent. The waterproof and breathable polyurethane material of the present invention has good waterproof and breathable properties, anti-aging properties, a comfortable surface feel, and a high yield rate; moreover, the preparation method is simple and easy to operate, which is convenient for large-scale production.

This utility model discloses a silicone-bonded micro-elastic shoulder strap of different thicknesses, comprising: a base layer and a foam intermediate layer. The lower surface of the foam intermediate layer is coated with a second adhesive layer, and a hot melt adhesive film is adhered to the lower surface of the second adhesive layer. Hook and loop fasteners are adhered to the lower surface of the hot melt adhesive film. The lower surface of the base layer is coated with a first adhesive layer, and the lower surface of the first adhesive layer is adhered to the upper surface of the foam intermediate layer. Both the first and second adhesive layers are PUR adhesives, which can effectively increase the bonding strength between the hook and loop fasteners and the foam intermediate layer, thereby improving product quality.

The invention relates to the field of nylon materials, and discloses a long-acting antibacterial anti-ultraviolet nylon composite material preparation method, which comprises: dispersing nanometer zinc oxide and nanometer titanium dioxide in water containing a silane coupling agent and a dispersant, and grinding to prepare a nanometer composite slurry; mixing a caprolactam monomer, the nano composite slurry and the maleic anhydride graft to prepare a prepolymer; and carrying out in-situ polymerization reaction on the prepolymer to prepare the nylon composite material. According to the method, the titanium dioxide and the nano zinc oxide are modified and coated by adopting aqueous phase grinding, a dispersing agent and a silane coupling agent at the same time, and the nano particles are secondarily coated by adopting a maleic anhydride graft, so that the antibacterial and anti-ultraviolet durability of the nylon composite material is remarkably improved; after the nylon composite material prepared by the method is washed for 50 times, the antibacterial rate of escherichia coli and staphylococcus aureus is greater than 90%, the UPF value is greater than 68, and the tensile strength is greater than or equal to 70 MP.

This utility model discloses an easily positioned embroidered emblem, relating to the field of clothing. Its key technical features include: a base layer and a decorative layer, which are sewn together. The base layer is located on the side of the decorative layer closest to the garment. The base layer has one longitudinal reinforcing strip and two transverse reinforcing strips. The length of the longitudinal reinforcing strip is equal to the maximum longitudinal length of the base layer, and the length of the transverse reinforcing strips is equal to the maximum transverse length of the base layer. This utility model improves the overall stiffness of the embroidered emblem through the longitudinal and transverse reinforcing strips, as well as the first reinforcing edge and auxiliary reinforcing strips used in conjunction, ensuring accurate positioning of the emblem's edges. The low-elastic polyester yarn uses Y-shaped cross-section irregular fibers to increase the friction between yarns and improve bonding strength. Simultaneously, the base layer ensures stiffness, and the decorative layer supports the embroidered pattern, ensuring that the pattern of the embroidered emblem is not affected by the reinforcing structure.

The invention discloses a preparation method of energy storage polyester filament yarns, and belongs to the technical field of intelligent textiles. The method comprises the following steps: mixing binary or ternary liquid metal, graphene, a specific dispersant and a solvent according to a ratio, and carrying out intermittent ultrasonic treatment to prepare a stable and uniform mixed dispersion liquid; water is used as a solvent, and a polymer matrix and a conductive salt are matched to prepare an aqueous gel electrolyte; and finally, sequentially immersing the polyester filament yarns into the dispersion liquid and the gel electrolyte, and controlling the immersion time and drying parameters to finish the preparation. The technology is simple, continuous production can be achieved, the dispersion stability of the raw materials and the binding strength of the raw materials and filaments are remarkably improved through dispersion system optimization and a thermal bonding mechanism, and the product has excellent electrochemical performance, mechanical flexibility and self-healing performance, has far infrared and antibacterial functions, meets the requirements of various intelligent textiles and is wide in application prospect.

This invention discloses a comfortable and breathable mulberry silk and wool fabric and its preparation method in the field of fabric technology. The comfortable and breathable mulberry silk and wool fabric is first woven with wool / bio-based nylon 56 wrapped yarn as warp yarn and mulberry silk / bio-based nylon 56 wrapped yarn as weft yarn to obtain mulberry silk and wool fabric. Then, the mulberry silk and wool fabric is successively treated with low-temperature oxygen plasma, impregnated with functional finishing liquid, and finally dried and heat-cured to obtain the final product. This invention improves the defects of pure wool and pure mulberry silk fabrics, such as low strength and easy damage. At the same time, in addition to the low-temperature oxygen plasma treatment and functional finishing liquid impregnation of the mulberry silk and wool fabric, the softness, mechanical properties and moisture absorption and quick-drying ability of the fabric are effectively improved, achieving a balance between fabric function and comfort.

The preparation method of the intercalated hydrotalcite / phosphate esterification modified castor oil composite fatliquoring agent disclosed by the application is implemented according to the following steps: step 1, preparing Phy-LDH; and step 2, preparing the intercalated hydrotalcite / phosphate esterification modified castor oil composite fatliquoring agent. The application also discloses the intercalated hydrotalcite / phosphate esterification modified castor oil composite fatliquoring agent and application. The application uses sodium phytate intercalated hydrotalcite to expand the interlayer spacing, weaken the interlayer electrostatic effect, reduce the tendency of the sheet layer aggregation, and improve the dispersion stability of the LDH in the castor oil. Meanwhile, the castor oil is modified by phosphate esterification, and a phosphorus-containing group is introduced into the molecule, so that the phosphate esterification modified castor oil and the sodium phytate intercalated hydrotalcite can be uniformly combined to form a stable composite system. The intercalated hydrotalcite / phosphate esterification modified castor oil composite fatliquoring agent also has the functions of softening and flame retardance.

The application discloses a high-rate ceramic-coated diaphragm, and relates to the technical field of battery diaphragms, which comprises a polyolefin-based film and a composite ceramic coating coated on at least one side surface of the film, wherein the composite ceramic coating comprises 45-60 parts by weight of cordierite ceramic powder, 15-25 parts by weight of a fast-ion-conductor type solid electrolyte, 10-20 parts by weight of a zeolite molecular sieve, 5-10 parts by weight of a modified polyacrylate binder, 0.5-2 parts by weight of a dispersant and 0.1-0.5 parts by weight of a wetting agent. The application obtains the composite ceramic coating by the synergy of the cordierite ceramic powder, the fast-ion-conductor type solid electrolyte and the zeolite molecular sieve, and the assistance of the modified polyacrylate binder, has the effect of significantly improving the ion conductivity and the high-rate charging and discharging adaptability, and effectively improves the thermal stability, the mechanical strength and the electrolyte retention, so that the cycle performance and the safety performance of the lithium ion battery under the high-rate working condition are improved.

The invention discloses an integrally recyclable artificial turf and a preparation method thereof, and belongs to the technical field of artificial turfs. The integrally recoverable artificial turf comprises artificial grass and composite base cloth, and the composite base cloth comprises base cloth A for fixing the grass, gridding cloth, base cloth B at the bottom of the turf and polyurethane hot melt adhesive for adhering the base cloth A, the gridding cloth and the base cloth B together; the base cloth A is a PET non-woven fabric subjected to single-side hydrophilic treatment by adopting a hydrophilic finishing agent; the polyurethane hot melt adhesive is prepared by compounding rosin-based polyol, an isocyanate monomer, 1, 4-butanediol and polytetrahydrofuran, and the rosin-based polyol, the isocyanate monomer, the 1, 4-butanediol and the polytetrahydrofuran are compounded to obtain the polyurethane hot melt adhesive. The integrally recyclable artificial turf prepared by the invention is firm in combination and can quickly drain water.

The invention discloses an insole and a foaming process for the insole of a slipper, and relates to the technical field of foaming soles, the insole comprises an EVA substrate and microfiber leather wrapping the outer side of the EVA substrate, the invention relates to an EVA (ethylene-vinyl acetate) substrate, which is characterized by comprising the following components in parts by weight: 100 parts of EVA, 30 to 50 parts of talcum powder, 2.9 to 3.1 parts of zinc oxide, 0.95 to 1 part of stearic acid, 3.5 to 5 parts of AC foaming agent, 0.9 to 1.2 parts of DCP (dicumyl peroxide), 2.9 to 3 parts of titanium dioxide, 1.5 to 2.5 parts of glycidyl methacrylate, 1 to 1.8 parts of white oil, 0.15 to 0.25 part of benzoyl peroxide and 8 to 12 parts of nano calcium carbonate. 0.3 to 0.6 part of trimethylolpropane triacrylate; wherein the nano calcium carbonate is treated by a titanate coupling agent to obtain modified active calcium carbonate. According to the present invention, by modifying the nano calcium carbonate and optimizing and upgrading the EVA substrate components, the adhesion firmness of the EVA substrate and the microfiber leather is significantly improved, and the lightweight and comfort effects of the shoe insole are achieved.