23results about How to "Volatile" patented technology

The invention relates to a fungus strain with a broad-spectrum antibacterial effect, preparation of antibacterial products of the fungus strain and application of the fungus strain in control of postharvest diseases of fruits and vegetables. According to the present invention, the classification name of the fungus is Pichia kluyveri, the Latin literature name is Pichia kluyveri, and the VOCs produced by the strain can inhibit a variety of pathogenic bacteria. The antibacterial product contains at least one compound of phenethyl acetate, ethyl acetate or phenethyl alcohol.

The invention discloses a quartz fiber with an yttrium oxide coating and a preparation method of the quartz fiber, and belongs to the field of preparation of wave-transparent ceramics. Aiming at the problem that the performance of the existing quartz fiber is reduced at a high temperature, the invention provides the preparation method of the quartz fiber with the yttrium oxide coating, which comprises the following steps: impregnating the quartz fiber by using yttrium oxide sol, and drying and sintering the impregnated quartz fiber to obtain the quartz fiber coated with the yttrium oxide coating on the surface; the preparation process of the yttrium oxide sol comprises the following steps: sequentially adding a coordination agent and a stabilizer into a yttrium nitrate solution, stirring and dissolving to form a mixed solution, adding a pH regulator to adjust the pH value of the mixed solution to 7-8, heating to a target temperature, and cooling to obtain the yttrium oxide sol. The yttrium oxide coating covers the surface of the quartz fiber, so that the high-temperature sintering resistance of the quartz fiber can be greatly improved; the preparation process of the yttrium oxide sol is simple in technology and low in cost, the prepared yttrium oxide sol is good in stability and can be better attached to the surface of the quartz fiber, and the dipping effect is improved.

The utility model discloses a multi-wedge belt wheel for conveying a roller, which relates to the field of logistics transportation and comprises a multi-wedge belt wheel main body which is integrally formed and arranged, the multi-wedge belt wheel main body comprises a transmission end and a connecting end, a plurality of trapezoidal holes are formed in one side of the connecting end, and every two adjacent trapezoidal holes are spaced to form a supporting partition plate. The trapezoid holes are matched with the supporting partition plates to support the rollers. The trapezoid holes effectively reduce the mass of the connecting ends, meanwhile, the trapezoid holes are matched with the supporting partition plates to enable the connecting ends to be of a hollow structure, the hollow structure can effectively buffer impact force of heavy objects on the roller, the trapezoid holes are of a quadrilateral structure, and compared with a triangular structure, the quadrilateral structure has the performance of variability, and the service life of the quadrilateral structure is prolonged. When the roller bears the pressure of a heavy object, the roller synchronously applies the pressure to the connecting end, and at the moment, the trapezoidal hole elastically deforms to achieve buffering, so that the impact force borne by the multi-wedge belt wheel is effectively reduced, the multi-wedge belt wheel is prevented from being damaged, and then the service life of the multi-wedge belt wheel is prolonged.

The utility model relates to the technical field of cleaning, in particular to a water treatment system and device.The water treatment system comprises a water flow channel, a weakening module, an ozone generation module and a micro-nano bubble generation module which are sequentially arranged in the water flow direction of the water flow channel, the alkalescence module can make water become alkalescent, and the micro-nano bubble generation module can generate micro-nano bubbles into the water flow channel, so that ozone generated by the ozone generation module can be stored in the micro-nano bubbles. According to the utility model, water can be weakly alkalized, and the solubility of ozone in water can be increased through the cooperation of the micro-nano bubble generation module and the ozone generation module, so that the sterilization and decontamination capabilities are improved.

The invention belongs to the field of energy materials, and discloses a preparation method of a lithium metal negative electrode of a lithium metal battery and a product and application of the lithium metal negative electrode of the lithium metal battery, and the preparation method comprises the following steps: using a conductive substrate as a working electrode, using an electrode composed of a lithium-containing substance as a counter electrode, and performing electro-deposition on the working electrode in a pure solvent or a low-salt solution to obtain the lithium metal negative electrode of the lithium metal battery. The correspondingly obtained working electrode is the lithium metal negative electrode. By using a pure solvent or a low-salt solution, high-efficiency electrochemical deposition of lithium can be carried out without participation of a traditional electrolyte of high-content lithium salt, correspondingly, the metallic lithium elementary substance (or lithium alloy) deposited on the working electrode is high in density, and the performance of the lithium ion battery is improved. The obtained electrode deposited with the lithium metal can be particularly used as a negative electrode to be applied to a lithium ion battery, and has the advantages of being simple in method, low in cost, controllable, expandable, high in industrial adaptability and convenient for large-scale operation.

The application discloses a DASA molecular switch photochromic film and application thereof. Z ,4 E )-2-hydroxy-5-((2-hydroxybenzyl)(pyridine-2-methyl)amino)pent-2,4-dien-1-ylidene)-2,2-dimethyl-1,3-dioxane-4,6-dione is dissolved in 1,1,1,3,3,3-hexafluoro-2-propanol, and a photochromic film is formed after the solvent is volatilized. The photochromic film of the application breaks the limitation of DASA molecular concentration dependence, realizes photochromism in a solid film state by means of intramolecular Michael addition and provides bicyclic isomers, and has application prospects in drug delivery, temperature sensors, chemical detectors, surface chemistry and photothermal driving.

The invention discloses an oil smoke reverse suction prevention device for an internal thread copper pipe, which relates to the technical field of non-ferrous metal processing and is used for being mounted on an annealing purging rod, an air inlet is formed in the annealing purging rod, the annealing purging rod comprises an air guide head, a conical air separation cover and a spring, the air guide head is arranged on the annealing purging rod, and the conical air separation cover is arranged on the air guide head. A gas guide head inlet and a gas guide head inner hole which are communicated with each other are formed in the gas guide head, the gas guide head inner hole is communicated with the gas inlet, the conical gas insulation cover is arranged in the annealing purging rod, one side of the conical gas insulation cover is over against the gas inlet, and the other side of the conical gas insulation cover is connected with the inner wall of the annealing purging rod through a spring. By arranging the oil smoke suck-back prevention device for the internal thread copper pipe on the air inlet of the finished annealing purging rod, inert protective gas can be conveniently guided into the annealing purging rod, meanwhile, oil smoke gas in the atmosphere in a furnace in the annealing process can be effectively prevented from being sucked back into the inner wall of the copper pipe after inert gas purging is completed, and the service life of the copper pipe is prolonged. Oil smoke is prevented from entering the copper pipe for secondary cooling condensation, so that the residual oil value of the inner wall of the copper pipe is reduced.

The application provides a printable mesoscopic perovskite solar cell and a preparation method thereof, and the solar cell has a layered structure framework. By adding an alcohol ether to a precursor solution, the permeability of the precursor solution is effectively improved, and the fill factor, short-circuit current and stability of the solar cell are significantly improved, so that the technical problem that the existing perovskite precursor is not filled sufficiently in the porous membrane framework, resulting in poor photoelectric performance, is solved.

The invention discloses high-elasticity and high-weather-resistance modified asphalt and a preparation method thereof. The preparation method comprises the following steps: performing high-speed shearing swelling on paraffin-based matrix asphalt, hydrogenated nitrile rubber powder and nano silicon dioxide powder to obtain an asphalt mixture; the preparation method comprises the following steps: mixing an ethylene-vinyl acetate copolymer, cycloundecane and ethylene glycol monoethyl ether acetate to obtain an ethylene glycol monoethyl ether acetate solution, and emulsifying an asphalt mixture and the ethylene glycol monoethyl ether acetate solution to obtain the high-elasticity and high-weather-resistance modified asphalt. The asphalt and the ethylene-vinyl acetate copolymer form a new chemical bond through an emulsification reaction, and cycloundecane improves the density and hardness of hydrogenated butadiene-acrylonitrile rubber and fills gaps in the asphalt, so that the crystallization ability between rubber molecules and asphalt molecules is improved, the crystallinity of the asphalt is improved, and the mechanical property of the asphalt is improved. The cohesive force and elasticity of the asphalt can be enhanced, so that the elasticity and weather resistance of the asphalt are improved, and the defects of insufficient elasticity and weather resistance of the asphalt in the prior art are overcome.

This invention relates to an injection molding structure and demolding process for producing two-color liquid silicone ejector pins in the field of injection molding technology. It includes a frame, a heating device, an injection molding device, a molding device, and a main control panel. One end of the lower mold assembly is equipped with an atomizing spray gun. The surface of the atomizing spray gun is connected to an air inlet for compressed gas and a liquid inlet for mold release agent. The lower mold assembly contains a demolding device to assist in cooling and demolding. This invention improves upon traditional ejection methods that easily cause product tearing, deformation, or residue by adding an atomizing spray gun to uniformly spray the agent onto the surface of the cavity and core under gas pressure, forming a micron-level isolation film, achieving a non-destructive demolding process. This structure automatically sprays the mold release agent before mold opening. After mold opening, the demolding device with a cooling effect first cools the ejected part of the product, allowing the stressed part of the product to cool and solidify before being smoothly ejected, reducing the need for traditional steps requiring complete cooling or air cooling.

The application relates to the technical field of plant extracts, and discloses a forsythia suspense leaf extract and application thereof. The preparation method of the forsythia suspense leaf extract is as follows: (1) forsythia suspense leaves are treated by killing green, drying and crushing, and then sprayed with a sodium hydroxide-ethanol solution and sealed and placed, followed by drying and steam explosion to obtain solid A; (2) solid A is extracted by refluxing with an ethanol solution, and then subjected to solid-liquid separation and concentration to obtain concentrated solution A, anhydrous ethanol and an additive are added into the concentrated solution A, stirred, placed, subjected to solid-liquid separation, concentrated into a paste, and then water is added into the paste, mixed, and concentrated to obtain concentrated solution B; (3) concentrated solution B is placed at room temperature, subjected to solid-liquid separation, and the collected solid is dried to obtain the forsythia suspense leaf extract. The preparation method of the forsythia suspense leaf extract in the application can effectively extract forsythoside in the forsythia suspense leaves, and the content of forsythoside in the extract can reach more than 60%.

The present invention relates to a preparation for rapidly promoting the germination and rooting of Tamarix chinensis cuttings and a preparation method thereof. The raw material formula is: 500-1000 mg / L of indolebutyric acid, 250-500 mg / L of cytokinin, and the rest is double distilled water. Under the treatment of the preparation, the survival rate of Tamarix chinensis cuttings can be rapidly improved, the growth of the aboveground part and the root system can be promoted, and the cutting propagation rate of Tamarix chinensis branches can be significantly improved.

This invention provides a copper-zinc-tin-sulfur-selenium thin film, its preparation method, and a semiconductor device thereof. The preparation method includes: fully dissolving at least one metal source of copper, zinc, tin, sulfur, and selenium in a ligand solvent; then adding a main solvent, other metal sources, and a sulfur or selenium source; and thoroughly mixing to obtain a copper-zinc-tin-sulfur-selenium precursor solution based on a mixed solvent system. The ligand solvent is a small-molecule solvent with carbonyl or amine coordinating groups that provide lone pairs of electrons to metal cations. The precursor solution is then coated onto a substrate surface to prepare a precursor thin film. The precursor thin film is further subjected to post-selenization or post-sulfurization treatment to obtain the copper-zinc-tin-sulfur-selenium thin film. By introducing a small-molecule solvent with specific coordination ability to form discrete metal-ligand structural units with the metal precursor, metal clusters or oxygen bridge network structures are effectively suppressed. High homogenization of the precursor solution is achieved at the molecular scale, significantly improving the thickness and compositional uniformity of the copper-zinc-tin-sulfur-selenium precursor thin film.

This utility model discloses an odor sample preparation device, including an odor source storage chamber and bases disposed at the four corners of the lower side of the odor source storage chamber. The odor source storage chamber has a storage space inside, and an anti-volatility sealing cover is provided on the rear exterior of the storage space. A temperature control module is disposed inside the upper rear left side of the odor source storage chamber, a suction pump is disposed inside the left side of the odor source storage chamber, and a controller is disposed on the upper right front side of the odor source storage chamber. This device supports the rapid replacement of different types of adsorption materials (such as activated carbon and molecular sieves) to meet the directional enrichment needs of diverse odor samples (such as explosives, plant fragments, food, etc.), avoiding the limitations of a single material. The temperature control module is electrically connected to the external heating structure and can flexibly adjust the heating mode according to the odor source form (solid or liquid), improving the volatile efficiency of odor molecules while supporting standardized and streamlined operation.

The invention discloses a perspiration breathable eight-hole fiber and a preparation method thereof, and relates to the technical field of chemical fibers. The preparation method comprises the following steps: modifying silicon nitride by using calcium lignosulphonate, respectively loading a natural high polymer material and a compound on the modified silicon nitride, preparing modified polyester fibers from the silicon nitride loaded with the natural high polymer material and a polyester material, and spraying the silicon nitride loaded with the compound on the modified polyester fibers to obtain the modified polyester fibers. The air-permeable and sweat-discharging eight-hole fiber is prepared; the preparation method comprises the following steps: embedding poly (N-isopropylacrylamide) into carrageenan to prepare a compound; certain micropores exist in a three-dimensional network structure formed by the carrageenan, the micropore structure endows the carrageenan gel with certain adsorption, embedding and other properties, the carrageenan gel can be used for bearing poly (N-isopropylacrylamide), and the breathable effect of the fiber is improved.

The invention relates to the technical field of solid-state batteries, in particular to a negative pole piece for a solid-state battery, a preparation method of the negative pole piece, the battery and an electric device. The disclosed negative pole piece for the solid-state battery comprises a current collector and an active coating which is arranged on at least one side and at least part of the surface of the current collector in the thickness direction, the active coating comprises a negative electrode active material, a binder and a densification auxiliary agent, and the number-average molecular weight of the densification auxiliary agent is smaller than that of the binder; when the pressure is less than or equal to 5MPa, the porosity of the negative pole piece is a and is dimensionless; wherein a is less than or equal to 30%. According to the negative pole piece disclosed by the invention, the friction force and the mechanical occlusion behavior at the interface can be regulated and controlled, the rearrangement and densification potential barriers of numerous particles in the charging and discharging process are reduced, the dynamic densification structure of a solid negative pole under low pressure is ensured, and the ion and electron transmission performance is improved.

The application provides a preparation method of a novel nano-enzyme high-efficiency antibacterial agent, and the specific operation steps are as follows: 1, CuAC2 is weighed and dissolved in N,N-dimethylformamide; 2, sodium phenyl dodecyl sulfonate is added, and after stirring for one hour, the mixture is moved into a reaction kettle; 3, thioacetamide is added, and after continuing to stir for 10 minutes, the mixture is sealed; 4, after constant temperature heating in a 180-degree oven for 24 hours, the mixture is taken out, cooled to room temperature, centrifuged, washed and dried, and the powder obtained is the novel nano-enzyme high-efficiency antibacterial agent. The novel nano-enzyme high-efficiency antibacterial agent prepared by the method can generate sufficient ROS (hydroxyl radicals) under the condition of no light, and is used for killing various typical drug-resistant bacteria.

The invention belongs to the technical field of traditional Chinese medicine preparations, and discloses a collateral dredging pill which comprises collateral dredging extract fine powder, an enteric coating layer and a gastric-soluble film coating layer. The invention also discloses a preparation method of the pill, which comprises the following steps of: preparing the vein and collateral dredging extract into small pills or granules, coating the enteric coating, further preparing the pills, and coating the stomach-soluble film coating to obtain the pill. Compared with traditional collateral dredging granules and pills, the collateral dredging enteric-coated pill preparation can effectively improve the drying speed of the pill, is regular in appearance, good in fluidity and small in weight difference, can reduce the bad smell of the preparation under the condition that a flavoring agent is not used, improves the medication compliance of a patient, can be accurately positioned to disintegrate, release and absorb, and has a good application prospect. Meanwhile, the stability of the medicine is improved. As an upgraded and updated new product of traditional collateral dredging granules and pills, the traditional Chinese medicine composition has a wide market development prospect.

The present application relates to rectification technical field, particularly to a kind of rectification tower system balance full-automatic separation control method, rectification tower system includes rectification I tower, control method includes to rectification I tower is carried out material balance control and gas-liquid equilibrium control, gas-liquid equilibrium control is used to control the amount of backflow of material backflow to rectification I tower;The material balance control includes: detecting the actual feed flow of rectification I tower and the actual liquid level value of the first reflux tank corresponding to rectification I tower, in combination with the overhead take-off component set point of rectification I tower and the overhead take-off component density, the overhead take-off material flow of rectification I tower is calculated and controlled in real time.By the method, the stability and efficiency of rectification tower system are improved, and the energy consumption cost and the volatility problem of product are reduced.

The application provides a deep trench capacitor forming method, which comprises the following steps: forming a deep trench in a substrate, and forming a stacked oxide layer and gate polysilicon layer in the deep trench; sequentially forming an interlayer dielectric layer, a bottom anti-reflective coating and a patterned photoresist layer on the surface of the substrate and the surface of the gate polysilicon on the substrate; using the patterned photoresist layer, introducing etching gas C5F8, O2 and Ar into an etching cavity, setting the etching temperature to be 35-45 DEG C, etching the bottom anti-reflective coating and the interlayer dielectric layer in sequence to form a contact hole in the interlayer dielectric layer and the bottom anti-reflective coating, and the aspect ratio of the contact hole is greater than 4; continuously introducing gas CF4, Ar and CO into the etching cavity; and continuously introducing O2 into the etching cavity. The application removes the polymer deposited on the bottom and sidewall of the contact hole when the interlayer dielectric layer is etched to form the contact hole, and reduces the probability of defects of the deep trench capacitor.

The application discloses an interlayer ordered double transition metal MAX phase material and a preparation method thereof, and comprises the following steps: grinding Mo, V, Al and C element powders to obtain mixed powders; tabletting the mixed powders, performing calcination treatment, and cooling to room temperature to obtain the interlayer ordered double transition metal MAX phase Mo2VAlC2 material. Compared with other discharge plasma sintering or microwave sintering processes in a laboratory, the preparation method is simple, efficient, easy to obtain raw materials and low in cost, and can be further scaled up for industrial production. In addition, the interlayer ordered double transition metal MAX phase Mo2VAlC2 prepared by the application is simple and easy to obtain in terms of raw materials and equipment, and the purity of the obtained product is considerable. In the crystal structure, Mo atoms and V atoms are highly ordered to occupy outer transition metal layers and inner transition metal layers, respectively, and the highly ordered atomic occupation can bring about the regulation potential of physical and chemical properties.

The application relates to the technical field of electronic data digital processing, and discloses a pollution source non-site environmental supervision electronic evidence system combined with hash operation, which comprises the following steps: generating a pseudo-random cryptographic sequence by using a true random number generator, extracting a cross-modal consistency tensor, and generating a dynamic semantic hash through hash operation; adopting an interactive multi-model and an unscented Kalman filter to decouple physical link intrinsic noise, extract adaptive physical micro-entropy; deriving a hardware-level device private key in a trusted execution environment based on a physically unclonable function; performing strong binding signature on multi-dimensional trust features and a time stamp, generating a living body electronic evidence certificate, and completing synchronism and anti-replay verification through a cloud digital twin model. The application extends a trust chain to a bottom layer physical sensing link, realizes identification of AI injected fake data and physical layer tampering behavior, constructs a full-link trust closed loop from a physical source to a cloud judicial solidification, and guarantees the authenticity and non-repudiation of non-site environmental supervision data.