15results about How to "Uniform and stable structure" patented technology

The invention discloses a vanadium-based neutron transparent alloy material and a preparation method thereof, the alloy is a disordered solid solution of a body-centered cubic structure formed by a single crystal phase, the chemical composition is V < 1-x > Mx, x is less than 0.1, V is a metal element vanadium, and M is selected from one or more of Al, Nb, Ta, Fe, Sn or Mo. According to the alloy, neutron diffraction peaks generated by metal vanadium can be effectively eliminated while a metal vanadium body-centered cubic crystal structure is not damaged, the neutron transparent alloy material is successfully prepared, the process is simple and feasible, the formula has diversified choices, multiple novel double-element vanadium-based neutron transparent alloys are prepared, and the neutron transparent alloy material has good application prospects. In addition, the multi-element vanadium-based transparent neutron alloy is prepared for the first time, all the materials have excellent chemical and mechanical properties, and compared with an existing Ti2.08Zr alloy, the multi-element vanadium-based transparent neutron alloy has better high-temperature chemical stability.

The invention discloses a high-toughness epoxy resin material as well as a preparation method and application thereof, and aims to solve the problems that traditional epoxy resin is high in brittleness, and strength and toughness are difficult to consider at the same time. The preparation method comprises the following steps: carrying out incomplete silane coupling agent surface modification on glass fibers to obtain modified glass fibers with part of silicon hydroxyl reserved; synthesizing modified polyurethane of which the tail end contains an isocyanate group; directionally grafting the two to form a compound; mixing and curing with epoxy resin and a curing agent to obtain a target material. Through the innovative design of controllable defect manufacturing and dynamic key directional anchoring, the normal-state high-strength and stress high-toughness synergistic performance is achieved, meanwhile, the material is stable in structure, has the dynamic repairing potential, can prolong the service life and is suitable for preparing coatings, electronic packaging materials and adhesives.

The invention belongs to the field of energy storage, and particularly relates to a high-performance NASICON type oxide electrolyte and a preparation method thereof. The electrolyte takes an NASICON type oxide as a matrix and contains polyoxometallate accounting for 0.1-20% wt of the NASICON type oxide, the electrolyte can effectively improve the sodium affinity and intrinsic ionic conductivity of the NASICON solid electrolyte, and the interface impedance of the prepared sodium symmetric half cell at room temperature is smaller than 20 omegacm < 2 > and is as low as 16.7 omegacm < 2 >. According to the invention, the reaction between the NASICON and the additive is more uniform by adding the polyoxometallate in situ, a uniform and stable structure is formed, and the sodium ion conductivity of the NASICON solid electrolyte is effectively improved.

The application belongs to the technical field of photocatalytic nano antibacterial materials, and discloses a preparation method and application of artemisia carbon dot modified crystalline carbon nitride material. The material is composed of A-CDs and CCN, A-CDs retains the biological activity functional groups of artemisia and is uniformly modified in the interlayer of CCN. The preparation method comprises the following steps: preparing CCN solid and A-CDs powder respectively, then dispersing the two in deionized water, adjusting pH, and then performing ultrasonic dispersion, drying, grinding and staged calcination treatment, so as to obtain A-CDs@CCN material. The application improves the charge separation efficiency by embedding A-CDs in the interlayer of CCN, realizes the synergistic antibacterial effect of A-CDs and CCN, has high inhibition activity on staphylococcus aureus and escherichia coli, and is not easy to induce drug resistance. The preparation process is simple, the raw material cost is low, the obtained material is uniform in composition and stable in structure, and can be used in the field of antibacterial.

This invention relates to the field of preparation method technology and discloses a method for preparing a low-density nylon foam material. The method includes selecting nylon resin as the matrix material, wherein the nylon resin is a blend of PA6 and amorphous nylon PA610 in a specific ratio, wherein the mass ratio of PA6 to PA610 is 60:40 to 80:20, and the melt strength of the nylon resin is greater than or equal to 18 Pa·s; introducing a composite foaming agent, wherein the composite foaming agent is a combination of a chemical foaming agent and a physical foaming agent; and adding a nucleating agent, wherein the nucleating agent is nano-sized silica, nano-clay, talc, or a combination thereof, wherein the mass content of nano-silica is 0.5% to 2.0%. This invention can maintain stable dimensions and mechanical properties in humid environments and has a uniform and stable cell structure.

The present invention discloses a visualized carbon-based nanocatalytic drug, which includes a carbon nanodot substrate, a tumor targeting ligand, a metal ion chelator and a metal ion chelated therewith, wherein the metal ion chelator is modified on the surface of the carbon nanodot, and the tumor targeting ligand is coupled on the surface of the carbon nanodot. The preparation method includes the following steps: preparing a carbon nanodot substrate; preparing a metal ion chelator; preparing a tumor targeting ligand; preparing a bifunctional carbon nanodot; dispersing the bifunctional carbon nanodot in pure water, adding a metal ion solution and a tumor targeting ligand for reaction, and the product obtained after freeze-drying is a visualized carbon-based nanocatalytic drug. The drug of the present invention has the advantages of fluorescence emission function, uniform and stable structure, monodispersity, good water solubility, good catalytic efficiency, etc., and targets and transports $V ions to the inside of tumor cells, amplifies the oxidative stress of tumor cells by catalyzing a Fenton-like reaction, and thus efficiently kills tumor cells.

The invention provides a preparation method of a composite piezoelectric film, which comprises the following steps: adding a 0.5 Ba (Zr < 0.2 > Ti < 0.8 >) O < 3 >-0.5 (Ba0. 7Ca0. 3) TiO < 3 > nanowire into a buffer solution containing dopamine hydrochloride to obtain a 0.5 Ba (Zr < 0.2 > Ti < 0.8 >) O < 3 >-0.5 (Ba0. 7Ca0. 3) TiO < 3 > nanowire of which the surface is modified by dopamine; polyvinylidene fluoride and 0.5 Ba (Zr < 0.2 > Ti < 0.8 >) O < 3 >-0.5 (Ba < 0.7 > Ca < 0.3 >) TiO < 3 > nanowires with the surfaces modified with dopamine are dissolved in a spinning solvent respectively and mixed, and an electrostatic spinning solution is obtained; and carrying out electrostatic spinning by utilizing electrostatic spinning to obtain the composite piezoelectric film. The invention further provides a sensor prepared from the composite piezoelectric film, a preparation method of the sensor and application of the composite piezoelectric film sensor in heart sound monitoring.

This invention discloses a method for restoring the charcoal-grilled flavor of pike using a high-temperature, short-time oven baking process, belonging to the field of aquatic product processing technology. The invention employs a flameless, segmented oven heat treatment process: after thawing and cleaning, salt tumbling, low-temperature cold air drying, pre-baking at 170℃, and then short-time high-temperature baking at 270℃. This process eliminates the need for charcoal fire equipment and can be promoted in shopping malls and homes. By controlling the heat processing conditions, it fully stimulates the characteristic charcoal-grilled flavor compounds of aldehydes, ketones, and pyrazines. Verification using electronic nose, GC-IMS, free amino acids, and sensory analysis shows that the finished product is crispy on the outside and tender on the inside, with a high degree of charcoal-grilled flavor restoration and a full-bodied taste. It solves the safety and standardization problems of open-flame baking, is simple to operate and easy to mass-produce, and effectively enhances the added value of deep-processed Xinjiang pike.

The application discloses a kind of concrete internal curing agent for high-temperature underground chamber and its preparation method, belong to concrete material technical field.The internal curing agent is composed of sealing film liquid and superabsorbent polymer, sealing film liquid is compounded by epoxy modified polyurethane emulsion, nano silicon dioxide, carboxyl-containing acrylate copolymer, temperature-sensitive polyether polyol and coupling agent in proportion, form the core-shell structure with sealing film liquid as shell, SAP as core, with good high-temperature resistance and alkali resistance.The internal curing agent does not affect the working performance of concrete, in the high-temperature environment of 30~90 DEG C, when the hydration process of cement causes the pH value of pore solution in concrete to rise, the temperature of concrete rises and internal water shortage occurs, sealing film gradually ruptures under the synergistic effect of high temperature and high alkali, releases the water stored by SAP, provides the required free water for the continuous hydration of cement in concrete, effectively improves the strength and durability of concrete under high-temperature conditions.

The invention discloses a truck front suspension support convenient to mount and a mounting method thereof, and belongs to the technical field of truck suspension systems. The front suspension support comprises a front suspension support body and a rear suspension support body which are cooperatively matched, the front suspension support body is provided with a connecting hole, an anti-interference sliding way and an abnormal sound preventing structure, and the rear suspension support body is provided with an adaptive connecting hole and is optimized in shape; the front suspension support can be matched with a single-support and double-support installation mode, and the front suspension support and the double-support are integrally formed through thickened manganese plates. The installation method comprises the steps of positioning installation, oil cylinder installation, debugging inspection and optimization adjustment, and existing truck parts do not need to be transformed. The problems that an existing support is poor in structure, tedious in installation, weak in working condition adaptability, difficult to guarantee in installation quality and the like are solved, stable four-point suspension of the cab is achieved, the structural stability and driving comfort are improved, installation is efficient, adaptability is wide, and the use requirements of various working conditions can be met.

The present invention relates to a chiral bowtie Co-based electrocatalyst and a preparation method thereof. The preparation method comprises: dripping triethylamine into a first solution containing chiral threonine to obtain a second solution; treating the second solution by a hydrothermal method, and obtaining a chiral Co nano bowtie after the reaction is completed. The chiral amino acid of the present invention is chiral threonine, and the material for adjusting pH is triethylamine. A transition metal cobalt-based chiral inorganic nanomaterial is prepared by a simple hydrothermal method, which solves the problem that transition metal-based chiral materials are difficult to prepare. In addition, the present invention induces the twisting direction of cobalt nanobelts by chiral threonine under high temperature and high pressure conditions, and the generated nano bowtie has chiral structures with different twisting directions, and the structure is stable and uniform without aggregation.

This invention discloses a coating solution for preparing high-temperature resistant and high-thermal-conductivity epoxy-based conductive films, its preparation method, and its application. By weight, it comprises the following raw material components: 70-85 parts liquid epoxy resin, 15-30 parts solid epoxy resin, 5-35 parts latent curing agent, 0.5-5 parts accelerator, 300-600 parts conductive filler, 15-30 parts thermoplastic resin, 0.5-2 parts coupling agent, and 30-60 parts solvent. The thermoplastic resin is a phenoxy resin with a special chemical structure and a molecular weight of 20,000-65,000 g / mol. This invention, by introducing a high-temperature resistant thermoplastic resin into the coating solution formulation, enables the prepared conductive film product to possess excellent comprehensive properties such as toughness, adhesion characteristics, and high-temperature stability.

The present application relates to the field of silicone rubber technology, and specifically discloses a thermally conductive insulating liquid silicone rubber and its preparation method and application. A thermally conductive insulating liquid silicone rubber includes dimethyl vinyl silicone rubber, terminal hydroxyl silicone oil, liquid crystal polymer, hexagonal boron nitride, modified graphene-based filler and 5-7 parts of titanate coupling agent; its preparation method includes mixing and vulcanization. The thermally conductive insulating liquid silicone rubber of the present application can be used in the preparation of thermal interface materials, which has good mechanical properties and aging resistance, and has good insulation and thermal conductivity, and can meet the heat dissipation and application requirements of high-power electronic devices.

The invention relates to a single-order double-helix PET foamed sheet extrusion device, and belongs to the technical field of plastic processing equipment, the single-order double-helix PET foamed sheet extrusion device comprises two die bodies, one ends of the die bodies are connected with die lips, the two die bodies are jointly connected with a double-screw extruder, sliding grooves are formed in the two die lips, the sliding grooves penetrate to the opposite sides of the two die lips, and the two die lips are connected with the double-screw extruder. A sliding plate is arranged in the sliding groove in a sliding mode and connected with an adjusting plate, one end of the adjusting plate extends out of the die lip, the sliding plate divides the sliding groove into a first oil cavity and a second oil cavity, the adjusting plate extends out of the die lip from the first oil cavity, the die lip is connected with a first hydraulic cylinder, the first hydraulic cylinder is connected with an abutting plate, and the abutting plate can extend into the second oil cavity and abut against the adjusting plate. The ends, away from the die lip, of the two die bodies are jointly connected with a double-screw extruder, and a first pressurizing opening communicated with the first oil cavity and a second pressurizing opening communicated with the second oil cavity are formed in the die lip. The device has the effects of accurately controlling the thickness of the plate and improving the surface smoothness of the plate.

This invention provides a non-Saccharomyces anomalus yeast, with accession number CGMCC No. 25528, deposited at the China General Microbiological Culture Collection Center on August 12, 2022. A method for preparing immobilized yeast capsules of this non-Saccharomyces anomalus yeast is also provided. The immobilized yeast capsules prepared under optimal conditions exhibit high hardness, good permeability, and improved ethanol tolerance, allowing for simultaneous inoculation and fermentation with Saccharomyces cerevisiae. Furthermore, this invention provides the application of immobilized yeast capsules in winemaking. Using the immobilized yeast capsules of this invention in winemaking can significantly increase the total amount of volatile substances in the wine, enhance the complexity of the aroma, and thus improve the quality of the wine.