19results about How to "Improve surface properties" patented technology

The application discloses a kind of plasma jet array devices for large size epoxy surface modification, including frame, tank, gas cylinder for loading inert gas, aperture network, high voltage power supply and metal insert;Tank and metal insert are fixed on frame, tank is flat tank and its slot is formed with jet airway for placing and fixing epoxy insulation, the bottom and side of tank are provided with jet spout arranged in array, jet spout is connected by gas inlet pipe, gas inlet pipe is arranged in the inside of side plate and bottom plate of tank;Aperture network is connected on jet spout and connects high voltage power supply, tank is grounded by wire;Metal insert is inserted above epoxy insulation, metal insert is grounded by wire.The application also discloses the use method applied to the above device.Adopting the application, the surface of large size epoxy insulation can be quickly and uniformly modified, and the charge release capacity is improved.

The application discloses a nitrogen-doped carbon-coated three-metal catalyst and a preparation method and application thereof, and belongs to the field of catalyst preparation and application. The method adopts sucrose, melamine and metal salt as low-cost raw materials, and forms an alkaline environment with the assistance of sodium hydroxide. In the environment, melamine is hydrolyzed into cyanuric acid, which is complexed with sucrose metal ions to form a stable supramolecular aggregate precursor containing metal, and then realizes effective encapsulation of the metal in a high-temperature pyrolysis process. The synergistic effect of the three metal elements Co, Ni and Zn significantly improves the performance of the catalyst, so that CoNiZnO@NC-600 not only exhibits high conversion rate (98.4%) and selectivity (99%) in the reaction of hydrogenation conversion of furfural to furfuryl alcohol, but also has excellent cycle stability, thereby providing a new efficient method for the hydrogenation conversion of biomass-derived compounds.

The application provides a method for post-processing of a photosensitive resin component, and belongs to the technical field of photosensitive resin, and comprises the following steps: immersing the photosensitive resin component into a solution to obtain an intermediate; and sequentially performing atomization treatment and solidification on the intermediate to complete the post-processing. The photosensitive resin component is placed in an atomized environment for photocuring, the surface properties of the component are improved, the adhesion of the model surface is reduced to a certain extent, the surface color of the original component is changed, the surface smoothness is increased, the surface quality of the component after solidification is improved, the surface protection effect of the component is achieved, and the service life of the photosensitive resin component is prolonged.

The application discloses a kind of solid electrolyte material and its preparation method, positive pole piece, solid electrolyte film and full solid battery, it is related to solid battery field;Method comprises: lithium lanthanum zirconium oxygen base solid electrolyte is dispersed in first solvent, and electrolyte dispersion liquid is made;Acidic pH regulator is added to the electrolyte dispersion liquid, and the pH of the electrolyte dispersion liquid is adjusted to 7~8, and neutral dispersion liquid is obtained;Orthosilicate is added to the neutral dispersion liquid and mixed to obtain dispersion solution;During mixing process, polysiloxane is formed by the reaction of orthosilicate, and polysiloxane is coated on the surface of lithium lanthanum zirconium oxygen base solid electrolyte;The dispersion solution is subjected to electrolyte separation and drying treatment to obtain a solid electrolyte material.The application aims to improve the surface properties of lithium lanthanum zirconium oxygen base solid electrolyte, so that it can build good interface contact with other inorganic materials.

This invention relates to a method for preparing electronic-grade hydrofluoric acid. The invention utilizes a microchannel reactor for the fluorine oxidation reaction, significantly reducing fluorine consumption and safety hazards during production. Furthermore, the microchannel reactor enhances the gas-liquid two-phase mass transfer during the oxidation reaction, further improving impurity removal and product quality. The addition of multi-effect distillation to the distillation process not only enables secondary heat utilization but also saves on the use of high-temperature heating media at the bottom of the column, effectively reducing energy consumption. In the modified liquid, DMF serves as the solvent, cobalt nitrate provides cobalt ions, and vinylguanidine provides guanidine functional groups and amino groups. Ammonia and propanethiol are used as plasma gases to introduce amino and thiol groups onto the membrane surface. These groups help improve membrane selectivity, effectively separating metal and non-metal ions, as well as acidic impurities in the raw materials.

This invention discloses a manufacturing equipment and method for hot roughing universal joints used in metallurgical steel rolling. The equipment includes a worktable with four support legs at its bottom and a central control system at its top. It also includes a speed-changing support mechanism mounted on the top of the worktable, with two fixing mechanisms on the mechanism. The two fixing mechanisms respectively fix the universal joint and a flange. This supports the universal joint and the flange, enabling synchronous rotation and position adjustment, providing stable support for subsequent welding, straightening, and other processes. This device significantly improves welding quality by refining grains and dispersing impurities through multi-field coupling; avoiding surface damage through non-contact creep straightening; achieving micron-level straightening through ultrasonic rolling; forming a deep residual compressive stress layer to improve fatigue resistance; reducing human error through automated closed-loop control; adapting to various workpiece specifications; and significantly improving efficiency and reducing costs through integrated processing.

The application discloses a kind of process recovery device and method of waste nickel-plated tungsten wire cutting line, and the process recovery method includes: under the condition of continuously filling inert gas, waste nickel-plated tungsten wire diamond cutting line is heated to 1600-2000 DEG C, nickel layer is melted, and then gas jet atomization solidification is formed into nickel powder, and then spherical nickel particles are obtained by heterogenous drum wet grinding process.The tungsten wire separated is subjected to second heat treatment, and recycled tungsten wire is obtained, and the second heat treatment includes: the separated tungsten wire is heated to 600-1000 DEG C and kept for 2h, and then cooled to 200 DEG C and kept for 2h.The application can realize simple, efficient and low-cost recovery of waste nickel-plated tungsten wire diamond cutting line.

This invention belongs to the field of inorganic filler modification technology, specifically relating to a method for preparing modified microcrystalline graphite / natural rubber composite materials. A eutectic solvent is prepared by combining hexadecyltrimethylammonium bromide (hydrogen bond acceptor) with glycerol and lactic acid (hydrogen bond donors). Coupling agent KH550 is used to synergistically modify the eutectic solvent to modify the microcrystalline graphite. Compared with the unmodified microcrystalline graphite system, the mechanical properties and wear resistance of the composite material obtained by the modified microcrystalline graphite are significantly improved: when using 1 phr LADES and 3 phr KH550 for synergistic modification, the tensile strength of the vulcanizate is increased by 51.5% and the DIN wear volume is reduced by 46.5% compared to the MG group; when using 1.5 phr GLDES and 3 phr KH550 for synergistic modification, the tensile strength of the vulcanizate is increased by 46.2% and the DIN wear volume is reduced by 52.4%; under the wet preparation route, 1 phr LADES and 3 phr Synergistic modification with KH550 can increase the 300% constant tensile stress by 81% and achieve the lowest rolling resistance, indicating that the composite material has the potential to both reinforce and reduce rolling resistance.

This invention relates to the field of fabric technology, specifically to a breathable antibacterial fabric and its preparation process, and sportswear made from this fabric. The preparation process of the breathable antibacterial fabric includes: preparation of a composite antibacterial agent, preparation of multifunctional polyester fibers, amination modification of phenolic lignin, modification treatment of polyacrylonitrile, and preparation of the breathable antibacterial fabric. The breathable antibacterial fabric of this invention consists of inner, middle, and outer layers: the inner layer is a blend of modal and other materials, which is skin-friendly, moisture-wicking, and antibacterial; the middle layer is a polyurethane film layer; the outer layer contains polyacrylonitrile composite fibers, which are antibacterial, crisp, and breathable. A composite antibacterial agent made of chitosan, cysteine, and copper nitrate imparts dual antibacterial properties to the fabric, reducing bacterial resistance. Ethylene treatment enhances the bonding of components, improving wash resistance and antistatic properties; the co-spinning of amination-modified phenolic lignin and polyacrylonitrile increases fiber strength, breathability, and UV resistance. This fabric is suitable for sportswear.

This invention discloses halloysite-reinforced polyurethane sponge solar interfacial evaporation material and its preparation method, comprising the following steps: Step 1, pretreating halloysite to obtain pretreated halloysite nanotubes; Step 2, pretreating polyurethane sponge to obtain activated polyurethane sponge; Step 3, preparing a mixed dispersion by reacting dopamine hydrochloride with the pretreated halloysite nanotubes, immersing the activated polyurethane sponge in the mixed dispersion and magnetically stirring to induce a self-polymerization reaction of dopamine hydrochloride, followed by rinsing and drying to obtain the halloysite-reinforced polyurethane sponge solar interfacial evaporation material. The material obtained by this invention exhibits good bonding between halloysite and polyurethane sponge.

The present application relates to a kind of calcium hydroxide / natural zeolite composite humidity control material and its preparation method, belong to non-metallic mineral functional materials and inorganic humidity control material field.The natural zeolite of the present application is made into ore pulp by adding water, while according to the preset Ca (OH) 2 coating amount and the reaction molar ratio of NaOH and CaCl2 to react to generate Ca (OH) 2 NaOH and CaCl2 are weighed, and water is added to configure into respective uniform solution respectively;After that, NaOH solution and CaCl2 solution are added to natural zeolite ore pulp in parallel flow, and Ca (OH) 2 is uniformly precipitated and coated on the surface of natural zeolite particles;Prepared Ca (OH) 2 / natural zeolite composite powder suspension with certain liquid-solid ratio;Then Ca (OH) 2 / natural zeolite composite powder suspension is hydrothermally reacted;Finally, the hydrothermal reaction product is filtered, washed, dried and depolymerized, and the calcium hydroxide / natural zeolite composite humidity control material is prepared.The present application significantly improves the humidity control performance of natural zeolite, and the preparation method is energy-saving and green environmental protection, has greater application value and good application prospect in the field of building humidity control material.

The utility model relates to a kind of electrode structure of supercapacitor, to solve the problem of insufficient electrode and electrolyte interface contact, big resistance. The structure includes electrode main body, its one side is sequentially provided with porous layer, intermediate layer and electrolyte reservoir. The porosity of porous layer is not less than 50%, aperture range is 1-100nm, can significantly increase the actual contact area of electrode and electrolyte, reduce interface resistance. Intermediate layer is conductive polymer layer, can relieve interface stress, improve interface stability, while optimizing electrode surface characteristics, so that electrolyte is more easily spread and soak. The cavity volume of electrolyte reservoir accounts for 30%-40% of total volume, ensure sufficient supply of electrolyte. The device improves ion transport efficiency, reduces ion diffusion resistance, enhances electrode mechanical strength, prolongs the service life of supercapacitor, improves electrochemical performance through the synergistic effect of porous layer, intermediate layer and electrolyte reservoir.

The application relates to the field of cement, and particularly discloses an environment-friendly cement based on carbonaceous coal gangue and a manufacturing method thereof. The environment-friendly cement based on carbonaceous coal gangue raw materials comprise modified coal gangue powder 60-80 parts; cement clinker 30-40 parts; slag powder 10-20 parts; desulfurization gypsum 10-15 parts; tourmaline powder 5-10 parts; ammonium sulfate micro powder 5-10 parts; sodium carboxymethyl cellulose 3-7 parts; and the modified coal gangue powder is obtained by calcining and activating coal gangue powder and then treating the coal gangue powder with a beta-alanine aqueous solution. The environment-friendly cement disclosed by the application takes coal gangue as one of main raw materials, converts the coal gangue into environment-friendly cement with high added value through activation and enhancement treatment. This not only reduces the dependence on natural resources, but also realizes the recycling of waste resources and improves the resource utilization rate; and the cement disclosed by the application can maintain good working performance in the construction process.

This invention discloses a method for live pipeline leak sealing based on in-situ metal growth and its application, belonging to the field of online repair technology for pressurized pipelines. The method includes: pre-treatment of the leaking area; forming a repair layer consisting of a metal transition layer and a metal-ceramic composite layer in the leaking area using low-temperature solid-state deposition technology without interrupting pipeline operation; and finally, post-treatment of the repair layer by shot peening and low-temperature laser polishing to improve its density and surface properties. This invention employs low-temperature processes such as cold spraying, completely avoiding the risks of hot work operations and achieving safe and efficient repair under pressurized pipeline conditions. The gradient functional repair layer formed by this invention has high bonding strength with the pipeline substrate and excellent corrosion resistance and erosion resistance, making it particularly suitable for repairing pressurized pipeline leaks in the power, chemical, and marine engineering fields where continuous production is required.

The invention belongs to the field of cable materials, and discloses a silicone rubber cable material and a preparation method thereof. The high-performance silicone rubber is prepared from the following components in parts by weight: 60-80 parts of methyl vinyl silicone rubber, 20-40 parts of phenyl silicone rubber, 30-50 parts of magnesium hydroxide, 20-30 parts of aluminum hydroxide, 5-10 parts of nano montmorillonite, 8-15 parts of fluororubber powder, 3-8 parts of titanate coupling agent modified zinc oxide, 1-3 parts of a silane coupling agent, 2-5 parts of a vulcanizing agent, 1-2 parts of an anti-aging agent and 4-8 parts of stearic acid modified sepiolite. The composite material is prepared from the following components in parts by weight: 2-5 parts of zinc hydroxystannate, 3-6 parts of silicon nitride, 2-5 parts of blended powder, 4-6 parts of maleic anhydride grafted polyolefin elastomer modified calcium carbonate and 3-5 parts of montmorillonite / graphene composite powder. The problems that in the prior art, flame retardance and corrosion resistance of a silicone rubber cable material are difficult to synergistically improve, and inorganic filler compatibility is poor are solved.

The present invention relates to detergent compositions comprising protease variants and alpha-amylases or variants thereof. Furthermore, the present invention relates to methods of using the detergent compositions.

The application relates to the technical field of high polymer fiber rope manufacturing, and discloses a preparation process of a double-twisted anti-rotation ultra-high molecular weight polyethylene rope, which comprises the following steps: high-strength high-modulus UHMWPE fibers are selected as main body reinforcing fibers and are subjected to surface activation treatment; the treated UHMWPE fibers are divided into inner layer fiber bundles and outer layer fiber bundles; the blended inner layer fiber bundles are bundled, introduced into a tubular stranding machine through a tension controller, twisted in an "S" direction, and inner layer strands are formed; the twisted inner layer strands are continuously passed through a first heat treatment zone and cooled to form a pre-consolidated inner layer strand core. Through the combination of the double-layer blending functionalization, the inner-outer reverse twisting structure and the heat-induced plasticity integrated technology, the high-performance UHMWPE rope with high interface bonding strength, excellent anti-rotation performance, stable structure and intelligent monitoring potential is prepared, a series of problems such as weak interface bonding, easy rotation, single function and difficult monitoring are effectively solved, and the comprehensive performance and reliability of the UHMWPE rope are remarkably improved.

A plant-based dispersion composition, a plant-based beverage and a preparation method thereof. The plant-based dispersion composition includes natural dietary fiber, maltitol, oat β-glucan and hawthorn powder; the natural dietary fiber includes seaweed dietary fiber and at least one selected from oat dietary fiber, vegetable dietary fiber and fruit dietary fiber; the seaweed dietary fiber includes fucoidan; the particle size D50 of the plant-based dispersion composition is 5-100 μm. The plant-based beverage of the present invention includes a dispersant and the plant-based dispersion composition stably dispersed in the dispersant, the content of the plant-based dispersion composition is 5-30 wt%, the dispersant includes one or more of deionized water and mineral water. This plant-based beverage is stably dispersed and has a delicate taste. It can be used for gastrointestinal function conditioning, inhibiting Helicobacter pylori adhesion and assisting in protecting the gastric mucosa, improving defecation discomfort and reducing the level of inflammatory factors, while enhancing satiety and making blood glucose release more stable.

This invention discloses a thermally induced responsive self-healing superhydrophobic bamboo material and its preparation and self-healing methods. The preparation method utilizes a sol-gel method to prepare a superhydrophobic prepolymer, which is then impregnated with the bamboo material to obtain the superhydrophobic bamboo material. This invention not only assembles a superhydrophobic coating on the surface of the bamboo material through vacuum impregnation but also permeates the bamboo material with the superhydrophobic prepolymer, providing a foundation for the self-healing of the superhydrophobic bamboo material after damage. The preparation method has advantages such as simple operation, short preparation cycle, and effective improvement of the protective performance and durability of the bamboo surface. It is of great significance for improving the surface properties and functional expansion of bamboo, as well as the long-term use of durable superhydrophobic bamboo materials.