11results about How to "Evenly embedded" patented technology

The invention discloses a prepreg tape interlayer modification and enhancement method for automatic fiber laying, and belongs to the technical field of automatic fiber laying. The prepreg tape interlayer modification and enhancement method comprises the steps of online thermal softening, plasma thermal excitation nanometer material dispersion, hot air flow auxiliary deposition and air cooling solidification. Uniform and stable deposition of uniformly dispersed nano materials on the surface of the prepreg tape is realized, and a'physical interlocking 'modified enhanced interface is constructed, so that the interlayer bonding strength of the prepreg tape is improved. The problems that in the background technology, conventional nano modification is prone to particle aggregation, uneven in dispersion and difficult to embed, and an existing modification technology is incompatible with the online high-speed production process of automatic fiber laying are solved.

The invention relates to the technical field of composite electroplating, in particular to an electroplating method for preparing a high-wear-resistance self-lubricating plating layer, which comprises the following steps: firstly, carrying out pretreatment of oil removal and acid pickling activation on a metal workpiece; then preparing a nano composite nickel plating solution in which a nickel plating basic solution contains a nano particle composite phase subjected to pre-dispersion treatment, and the total concentration of composite particles is 10-60g / L; then the dispersion stability of the nano-composite nickel plating solution is maintained in a circulating filtration and mechanical stirring combined mode, and the pretreated workpiece is electroplated; and finally, after electroplating is completed, the workpiece is cleaned and dried. According to the electroplating process for preparing the nickel-based composite coating with high wear resistance and low friction coefficient, the pulse current is adopted, and the high instantaneous current density and turn-off time of the pulse current are utilized, so that desorption and rearrangement of adsorbed particles are facilitated, uniform embedding of the particles is promoted, nickel matrix crystal grains are refined, and the compactness and comprehensive mechanical properties of the coating are further optimized.

This invention discloses a two-step pulse electrodeposition method for preparing a nickel-tungsten-cobalt ternary metal oxygen evolution electrode and its application. Specifically, it addresses the Ni... 2+ Co 2+ With W 6+ The large differences in reduction potential and the mismatch in reduction kinetics lead to elemental segregation in single-step deposition. This invention addresses this problem by employing a two-step pulsed electrodeposition strategy: first depositing a Ni-W metal layer, then depositing a Ni-Co metal layer. This strategy optimizes the plating bath composition and pulse parameters step-by-step to accommodate the reduction requirements of different metal ions. The method includes: pretreatment of the nickel-based substrate; performing a first-step pulsed electrodeposition in a solution containing nickel and tungsten salts; and then performing a second-step pulsed electrodeposition in a solution containing nickel and cobalt salts, followed by drying. This invention, through specific two-step deposition and the periodic regulation of the pulsed current, effectively optimizes the loading and dispersion of nickel, tungsten, and cobalt, resulting in a high-performance oxygen evolution electrode with stable and reliable performance, meeting the application requirements of large-scale industrial production.

The invention provides a metal / heteroatom co-doped silicon carbon negative electrode material as well as a preparation method and application thereof, and belongs to the technical field of lithium ion battery materials. The metal compound and heteroatoms are uniformly distributed on the porous carbon substrate in an in-situ growth doping manner, so that the electron conductivity of the material is improved, the diffusion rate of lithium ions in the material and on an interface is also improved, and the reaction kinetics of the silicon-carbon negative electrode material is further synergistically improved. Meanwhile, the prepared silane deposited silicon-carbon negative electrode material has good conductivity, high structural stability and long cycle life.

This invention relates to the field of catalyst preparation technology, and more specifically, to the preparation and application of a metal catalyst for the production of the rubber antioxidant 6PPD. Copper nitrate and zinc nitrate compounds are dissolved in deionized water, and silicate esters are added and mixed in a water bath. The pH is adjusted, the mixture is aged, filtered, and washed with water to obtain the catalyst precursor. Copper halide is added and stirred until homogeneous, then dried in an oven, ground, and calcined to obtain the metal catalyst for the production of the rubber antioxidant 6PPD. This invention's metal catalyst maintains high activity and selectivity while also being low in cost, exhibiting excellent stability and environmental friendliness. The preparation process is simple, reproducible, and suitable for large-scale production, providing a novel catalytic solution with high industrial application value for the efficient and green synthesis of p-phenylenediamine antioxidants.

This invention belongs to the field of microbial technology and provides a microorganism coated with a metal-polyphenol secondary coordination nanocoating, its preparation method, and its applications. This invention involves the self-assembly of polyvinylpyrrolidone, metal ions, and polyphenols to form metal-polyphenol nanoparticles. Subsequently, a continuous nanocoating is rapidly deposited on the surface of the microorganism using the secondary coordination between the nanoparticles and the metal ions, resulting in a coating thickness of approximately 100 nm. The coating construction method of this invention is applicable to different types of microorganisms, and the coating has no significant impact on the normal growth of the microorganisms, exhibiting good biocompatibility. Simultaneously, this nanocoating can selectively promote the biofilm formation of Gram-negative probiotics (EcN). This promoting effect is maintained in a simulated intestinal mucus system. This invention can be used to improve the adhesion and colonization ability of probiotics and is applicable to the construction of probiotic preparations and microecological regulation systems.

The invention relates to lycopene water dispersible powder and a preparation method thereof, and belongs to the technical field of food additives. The method comprises the following steps: esterifying octadecyl alcohol and food-grade phosphoric acid, and reacting with edible gelatin to prepare modified edible gelatin; then lycopene dry powder is dispersed in ethyl acetate, a compound emulsifier, modified edible gelatin and 1, 3-propylene glycol are added, and preliminary embedding is achieved through high-speed shearing and ultrasonic nanocrystallization treatment; and step-by-step vacuum drying, secondary embedding with an excipient, freezing, crushing and screening are carried out, such that the water dispersible powder with a particle size of 0.1-0.2 mm is prepared. Through the hydrophobic binding and charge repulsion effects of the modified gelatin and the synergistic process of ultrasonic nanocrystallization and double embedding, the technical problems that traditional lycopene is poor in water dispersibility, prone to layering, high in solvent residue and insufficient in stability are solved. The prepared product is suitable for healthy food systems such as water-based food, beverage and the like, and has the advantages of convenience in storage and transportation and high bioavailability.

The invention belongs to the technical field of catalyst preparation, and particularly discloses a high-catalytic-efficiency non-noble-metal-based bifunctional catalyst and a preparation method and application thereof.The preparation method comprises the following steps that transition metal salt and halogen element salt are dissolved in a mixed reagent of ethyl alcohol and water, the mixed reagent is dropped on a conductive substrate, and the conductive substrate is dried to obtain the high-catalytic-efficiency non-noble-metal-based bifunctional catalyst. The preparation method comprises the following steps: adding a halogen-doped non-noble metal-based bifunctional catalyst into a reaction kettle, carrying out a solvothermal reaction on a heating plate at a heating temperature of 80-120 DEG C for 5-10 h, drying the obtained material, and carrying out plasma treatment to obtain the halogen-doped non-noble metal-based bifunctional catalyst. By adopting the high-catalytic-efficiency non-noble metal-based bifunctional catalyst as well as the preparation method and the application thereof, the problems that most high-efficiency catalysts in the ENRR field in the prior art are composed of noble metals, are high in cost and are not beneficial to industrial treatment of nitrogen-containing wastewater; the problem that a noble metal-based catalyst is easily subjected to S poisoning in an anode SOR and is rapidly inactivated is solved, and the non-noble metal-based bifunctional catalyst with high catalytic efficiency is constructed.

This invention relates to the field of filter material technology and discloses a graphene filter material and its preparation method. The preparation method of the graphene filter material includes the following steps: (1) mixing graphene and a polymer carrier to obtain a mixture; (2) melting and extruding the mixture to obtain a melt, spinning the melt to obtain matrix fibers, and simultaneously intercalating graphene fibers into the matrix fibers to obtain the graphene filter material; wherein the intercalation speed is 2-50 m / s and the intercalation distance is 5-20 cm. This invention achieves uniform dispersion and embedding of graphene fibers in the matrix fibers by precisely controlling the intercalation speed and distance, avoiding local aggregation of graphene fibers, thereby increasing the graphene content in the filter product. The prepared graphene filter material has excellent filtration performance as well as antibacterial, antiviral and formaldehyde removal properties.

This application provides a silicon-carbon anode material, its preparation method, an anode sheet, and a battery. The silicon-carbon anode material includes a silicon-carbon matrix and a carbon coating layer covering at least a portion of the surface of the silicon-carbon matrix. The silicon-carbon matrix comprises porous carbon and silicon particles filling the pores of the porous carbon. In the silicon-carbon matrix, the mass percentage of the silicon particles increases radially from the inside out; and the average particle size of the silicon particles decreases radially from the inside out. This application can obtain a silicon-carbon anode material with both excellent electrochemical performance and low expansion rate.

This invention discloses a monolaurate glycerol liposome for use as a feed additive and its preparation method, relating to the fields of feed additives and liposome encapsulation technology. The liposome comprises monolaurate glycerol, phospholipids, cholesterol, medium-chain triglycerides, an emulsifying stabilizer, an antioxidant, a protective carrier, and a composite interfacial stabilizing component. The composite interfacial stabilizing component has a multilayer organic-inorganic hybrid core-shell structure, which can form a stable interfacial protective layer on the outer surface of the liposome. The preparation method includes lipid phase preparation, aqueous phase dispersion, shear homogenization, coating with the interfacial stabilizing component, and drying and pulverizing steps. This invention can improve the encapsulation efficiency, processing stability, storage stability, and gastrointestinal release adaptability of monolaurate glycerol, and is applicable to the field of animal feed additives.