12results about How to "Avoid quenching" patented technology

The invention belongs to the technical field of talc, and provides a method for detecting fluorescent substances in talc raw ore, which comprises the following steps: S1, carrying out ball milling on the talc raw ore in a ball mill, sieving to obtain sieved powder, and adding deionized water into the sieved powder to obtain slurry; s2, adding the slurry into the mixture to enable the pH value of the slurry to be 5, stirring, and standing in a water bath for 2-3 hours to obtain a first precipitate; s3, adding a thiourea-ascorbic acid solution into the first precipitate to obtain a second precipitate; and S4, carrying out secondary ball milling on the second precipitate, and spreading the second precipitate in an enamel plate to detect whether the talc raw ore contains the fluorescent substances or not. The hydrochloric acid can dissolve quartz and mica to avoid generation of background fluorescence or quenching effect, and the nonionic surfactant polyethylene glycol can be adsorbed on the surface of the mineral to reduce interfacial tension, so that the hydrochloric acid is easier to infiltrate tiny pores, the pit defect caused by local over-corrosion is reduced, the pickling uniformity is improved, and the detection sensitivity is improved.

This invention discloses a self-cleaning radiative cooling coating based on biomass carbon quantum dots, its preparation method, and its application. The coating comprises a polymer film-forming resin, carbon quantum dots, and hollow glass microspheres; wherein the mass ratio of the polymer film-forming resin to the filler is 1:(0.1-0.5), and the mass ratio of the hollow glass microspheres to the carbon quantum dots is 1:(0.05-0.2). This invention synergistically enhances solar reflectivity through the photoluminescence properties of carbon quantum dots and the scattering properties of hollow glass microspheres, while simultaneously utilizing the synergistic effect of fluorinated resin and modified hollow glass microspheres to endow the coating with superhydrophobic self-cleaning function. A single layer of this coating can achieve a solar reflectivity >92%, mid-infrared emissivity >94%, and contact angle >150°, possessing both efficient daytime radiative cooling and long-lasting self-cleaning performance. It is particularly suitable for passive heat dissipation of outdoor equipment such as new energy vehicle charging piles, and features simple process, environmental friendliness, and excellent performance.

The application relates to the technical field of light-emitting materials, in particular to an organic compound, a composition and an organic electronic device. The organic compound has a structure as shown in any one of general formula (I) to (III). The organic compound is a novel light-emitting material, and when the organic compound is used in an organic electronic device, the problems of low light-emitting efficiency and short service life of the organic electronic device can be solved.

The present application belongs to the technical field of metal manufacturing, and particularly relates to a steam treatment product cooling device and a cooling method thereof, which comprises an outer barrel, an inner barrel, a top cover, a flow guide air supply assembly and an adjustment space assembly; the inner barrel is arranged in the inner part of the outer barrel, and a chamber for accommodating a cooling medium is formed between the inner barrel and the outer barrel; the top cover is arranged on the top of the outer barrel; the present application is designed by means of double cooling and non-direct blowing air flow, specifically, the cooling medium between the outer barrel and the inner barrel is used to indirectly reduce the ambient temperature of the inner barrel, so as to reduce the temperature difference between the part and the cooling environment, avoid sudden cooling, and divide the cold air of the air blower into two paths by the flow guide air supply assembly; the spiral flow guide plate guides the air flow to surround the outer side of the part, the injection rod is directionally injected into the gap between the parts, and the injection inclined plate and the air gathering ring are used to realize full-dimension air flow coverage; the air flow is uniformly and gently contacted with the surface of the part, and there is no local air sharp cooling, so that the condensate water generation condition is eliminated from the root, and then the oxidation and rust are avoided.

The invention relates to the technical field of sewage treatment, in particular to a water treatment method based on non-free radical oxidation. The water treatment method comprises the following steps: adding soluble carbonate into sewage containing calcium ions to obtain calcium carbonate crystals, and then introducing ozone to oxidize the sewage to obtain purified water. According to the water treatment method provided by the invention, calcium carbonate can be generated in situ in the sewage, ozone is catalyzed by the calcium carbonate to be decomposed on the surface of the sewage to generate high-activity atomic oxygen, and efficient oxidative degradation of pollutants is realized through a direct electron transfer mechanism between the atomic oxygen and organic pollutant molecules. The method breaks through the limitation of a traditional free radical path, avoids the problem of hydroxyl free radical quenching, has the advantages of high catalytic efficiency, good stability, environmental friendliness and no need of additional addition of a catalyst carrier, can realize efficient removal of calcium ions in sewage, and can be widely applied to water treatment and deep treatment of refractory organic wastewater.

This invention discloses a device and method for preparing a solid electrolyte membrane based on Joule heating technology, belonging to the field of battery materials technology. The device includes a main body; a Joule heating element is disposed in the inner cavity of the main body; several slide rails are disposed on both sides of the Joule heating element, and the slide rails are fixedly connected to the inner wall of the main body; a temperature sensor that can slide vertically is disposed on the slide rail; the Joule heating element includes a heat-insulating sleeve, which is a hollow cylindrical structure with open ends; a detachable support is connected to the bottom of the heat-insulating sleeve; a semi-circular positive electrode interface and a negative electrode interface are respectively connected to both sides of the heat-insulating sleeve; pressure relief and temperature measurement holes are also provided on the side wall of the heat-insulating sleeve; an internal thread is provided on the upper inner wall of the heat-insulating sleeve for threaded connection with a pressure head; a ceramic preform is installed in the inner cavity of the heat-insulating sleeve; pads are disposed on both sides of the ceramic preform. This invention can achieve rapid densification and crystallization of the ceramic preform to obtain a high-performance solid electrolyte membrane.

This invention provides a current lead connector structure and its welding method. The structure includes a welded tube, a current lead, a superconducting wire, and solder. The welded tube is a variable-diameter tubular structure, with the diameter gradually decreasing from the upper end to the lower end. The first section of the current lead is disposed inside the welded tube, and the second section is disposed outside the welded tube. The first section of the superconducting wire is a bare superconducting wire with its cladding removed, and the second section is a superconducting busbar with its cladding intact. The bare superconducting wire is disposed inside the welded tube and between the welded tube and the current lead, while the superconducting busbar is disposed outside the welded tube. Solder is laid inside the welded tube and completely submerges the bare superconducting wire. By heating and cooling the solder, the bare superconducting wire, the first section of the current lead, and the solder are fused together, thereby achieving the welding of the superconducting wire and the current lead. This invention solves the technical problems of high contact resistance at the solder joints, potential local hot spots, and difficulty in disassembly and assembly in existing current lead connector structures.

The invention discloses a fluorescent polyolefin adhesive as well as a preparation method and application thereof, and relates to the technical field of high polymer materials and adhesives. The fluorescent polyolefin adhesive comprises polyolefin elastomer grafted allyl alcohol glycidyl ether, hydrophobic group substituted binary acid, hydrogenated hydrocarbon resin, an AIE fluorescent material and a transesterification catalyst. Through an integrated molecular design and a simple preparation process, the self-healing performance, the fluorescent tracing performance, the corrosion resistance and the high bonding performance are efficiently integrated in a single material system, complex multi-step processing or post-processing is avoided, and the feasibility requirements of industrial production and application are met. The adhesive material can fundamentally change the traditional mode of'silent failure 'of an adhesive joint structure, strides towards a new normal form of'intelligent sensing, self-repairing and long-acting protection', and has great application value in the fields of new energy automobile battery sealing, ocean engineering protection, precise electronic packaging, high-end intelligent equipment manufacturing and the like.

This invention relates to a composition for a light-emitting layer and an organic electroluminescent device comprising the same, belonging to the field of display and lighting technology. The composition for the light-emitting layer includes a first host material, a second host material, and a boron-containing fluorescent material. The first host material is selected from the structure shown in general formula (A-1) or general formula (A-2), the second host material is selected from the structure shown in general formula (B), and the boron-containing fluorescent material is selected from the structure shown in general formula (C-1) or general formula (C-2). By using a composition formed by a first host material, a second host material, and a boron-containing fluorescent material with a specific structure in the light-emitting layer of an organic electroluminescent device, the efficiency and lifespan of the device can be effectively improved.

The application discloses a superconducting magnet cold head starting adaptive system and a control method, relates to the technical field of superconducting magnets, and discloses a superconducting magnet cold head starting adaptive system, which comprises a cold head, a frequency converter and a control unit. The cold head is used for cooling a superconducting coil, and the cold head comprises a driving motor, which is used for driving a piston inside the cold head to reciprocate to realize refrigeration. The frequency converter is electrically connected with the driving motor and is used for adjusting the working frequency of the driving motor. The control unit is signal-connected with the frequency converter, and the control unit is configured to: when it is detected that the cold head needs to be restarted after shutdown, control the frequency converter to drive the driving motor to operate at a first frequency which is lower than a preset working frequency, and when a preset condition is met, control the frequency converter to drive the driving motor to return to the preset working frequency. In this way, when the superconducting magnet is started again due to the shutdown of the cold head, the instantaneous heating impact inside the cold head can be avoided, and the superconducting coil temperature is prevented from rising sharply to cause quenching.

The application discloses a method for treating harmful algal bloom water by using an ultraviolet light in-situ reinforced enzymatic Fenton reaction system, which comprises the following steps: feeding the harmful algal bloom water into a reaction chamber, then adding glucose oxidase, glucose and green rust into the water in the reaction chamber, and applying ultraviolet light to the water in the reaction chamber to initiate a Fenton-like reaction, so that the harmful algal bloom water is treated, and the treated water is discharged from the reaction chamber. The method makes full use of the high-dissolved-oxygen environment of the harmful algal bloom water, combines the ultraviolet light with the enzymatic Fenton reaction system, controls the slow release of H2O2 in-situ, improves the types and quantity of oxidizing active substances, and improves the catalytic capacity of the enzymatic Fenton reaction system by using the ultraviolet light, so that the algae is removed in the natural water environment in a mild and efficient manner, the integrity of the algae cells is maintained to the maximum extent, and the release of intracellular organic matters is avoided.

The utility model discloses a high-temperature superconducting cake coil for a magnetic confinement device, which comprises a hollow shell, a cake coil is fixedly connected in the shell, and a sectional optical fiber temperature sensor detection end is connected between the lower end of the cake coil and the lower end in the shell. The right side of the shell is fixedly connected with a circuit interface, the cake coil and the detection end of the sectional optical fiber temperature sensor are electrically connected with the circuit interface, the circuit interface is electrically connected with the control end, the upper end and the lower end of the left side of the shell are fixedly connected with liquid nitrogen inlet and outlet interfaces, and the liquid nitrogen inlet and outlet interfaces are communicated with the interior of the shell. According to the high-temperature superconducting cake type coil for the magnetic confinement device, quenching is prevented through liquid nitrogen continuous cooling and temperature monitoring, a problem area is accurately positioned through a segmented optical fiber sensor, a circuit interface integrates control and communication, on-off can be conducted in time, and the effect of preventing fusing or damage to equipment is achieved.