785 results about "Temperature treatment" patented technology

The invention discloses an aluminum substrate UV matt finish paint and a preparation process thereof, and relates to the technical field of paints.The aluminum substrate UV matt finish paint is prepared from, by mass, 10%-20% of modified polyurethane acrylate, 25%-32% of high-functionality aliphatic polyurethane acrylate, 18%-30% of special modified epoxy acrylate resin, 0.5%-2% of dispersing agent, 0.1%-0.5% of defoaming agent, 1%-3% of anti-settling powder and the balance water. The paint is prepared from the following components in percentage by weight: 10 to 15 percent of magnesium silicate mineral, 1 to 10 percent of matting powder, 0.2 to 1 percent of 1-hydroxycyclohexyl phenyl ketone, 0.5 to 3 percent of trimethylbenzoyl-diphenyl phosphine oxide, 1 to 3 percent of acrylate flatting agent, 0.2 to 1.2 percent of polyurea modified polyurethane rheological agent and 5 to 15 percent of trimethylolpropane triacrylate. According to the UV matte finishing paint disclosed by the invention, through compounding of ternary resin and enhancement of nano silicon dioxide, a rigid and tough cross-linked network is constructed, a paint film is free of cracks when being bent at 180 degrees, the adhesive force reaches grade 0, and a coating is resistant to acid and alkali etching liquid and free of corrosion by cooperating with a silane coupling agent and a light stabilization system, and the color difference is delta Elt after the UV matte finishing paint is subjected to high temperature of 260 DEG C; and 1.5, the anti-yellowing performance is excellent.

The utility model relates to the technical field of mobile phone heat dissipation films, in particular to a high-heat-conduction mobile phone middle frame graphite heat dissipation film which comprises a heat dissipation film body, the heat dissipation film body sequentially comprises matte black single-faced adhesive tape, a high-heat-conduction graphite layer and double-faced adhesive tape from top to bottom, the high-heat-conduction graphite layer is formed by stacking low-temperature carbonization layers and is 0.2 mm in thickness, and the high-heat-conduction graphite layer is formed by stacking low-temperature carbonization layers. The low-temperature carbonization layer is formed by graphene through low-temperature carbonization treatment, the heat conductivity coefficient reaches 2000-2100 W / M.K, energy consumption is reduced through low-temperature treatment, the production cost is indirectly reduced due to the low temperature requirement, the graphene is subjected to low-temperature carbonization treatment, the lattice defect density is reduced, and the stability of the heat conductivity coefficient is ensured; and meanwhile, the 0.2 mm high-thermal-conductivity graphite layer is formed by stacking the low-temperature carbonization layers, so that the occupied space of the heat dissipation film body in the middle frame is reduced.

The utility model discloses a liquid nitrogen type cooling sample table for vacuum coating, which comprises a rotating table, a first lifting table mounted on the rotating table, a hollow interlayer pipe mounted on the first lifting table, a hollow shaft arranged on the rotating table and driven by the rotating table to rotate, and a second lifting table arranged on the outer side of the hollow shaft and connected with the rotating table. A wafer bracket is arranged at the end, away from the rotating table, of the hollow shaft. According to the utility model, the structure is simple, through the arrangement of the liquid nitrogen chamber, after a sample is subjected to high-temperature treatment, the liquid nitrogen chamber can be utilized to quickly cool the sample to a liquid nitrogen low temperature, and then under the action of the first lifting platform, the first lifting platform drives the liquid nitrogen chamber and the heating disc to perform synchronous height lifting adjustment, so that the distance between the heating disc and the wafer holder is adjusted; when the liquid nitrogen chamber and the heating disc are spaced from the wafer support by a certain distance, a worker can more conveniently put a sample into the wafer support for treatment, and then the sample on the wafer support can be subjected to high-temperature treatment or cooling treatment by adjusting the height of the liquid nitrogen chamber and the height of the heating disc respectively.

The invention provides a method for identifying the high temperature resistance of soybeans in the whole growth period and application of the method. The method comprises the following steps: detecting physiological and biochemical indexes, agronomic characters and yield character characteristics in each growth and development period of soybean seeds sown under control treatment and high-temperature treatment, and counting correlation among the indexes; the method comprises the following steps: calculating a high-temperature-resistant coefficient responding to a high-temperature stress character, analyzing correlation among different indexes by using a significant difference high-temperature-resistant coefficient, and rating the high-temperature-resistant grade of the sown soybean according to a high-temperature-resistant membership function value and a clustering analysis result through standardization analysis of a principal component and a membership function. The method is applied to the cultivation of new high-temperature-resistant soybean varieties, and three high-temperature-resistant soybean varieties, namely Jiangxi bean No.1, Jiangxi bean No.1 and Tibetan bean No.1, are cultivated.

The invention discloses an ejector pin anti-fatigue strengthening method based on multi-section variable-temperature treatment, and relates to the technical field of ejector pin anti-fatigue strengthening, and the ejector pin anti-fatigue strengthening method comprises the following steps: austenitizing high-temperature quenching: heating an ejector pin to an austenitizing temperature, and then carrying out zoned cooling on the ejector pin; medium-temperature tempering and thermal-state mechanical strengthening are conducted, specifically, the ejector pin is tempered at the medium-temperature tempering temperature, and thermal-state shot blasting or laser shock is conducted on the ejector pin in the heat preservation period or after heat preservation is completed; intermediate low-temperature plasma nitriding: carrying out plasma nitriding in a nitrogen-hydrogen gas environment; subzero treatment: placing the ejector pin in liquid nitrogen; and finally, low-temperature tempering and cold-state mechanical strengthening are conducted. Through multi-section temperature gradient treatment, phase change distribution control over different temperature sections is achieved, too high internal stress and brittleness generated by one-time quenching are avoided, sudden size change and hot cracks induced by phase change are prevented, a controllable surface-core hardness and toughness gradient is formed, the surface crack initiation tendency is reduced, and the surface quality is improved. And the consistency and controllability of anti-fatigue basic conditions are improved.

The invention provides a preparation method of a plate-shaped glassy carbon electrode, which comprises the following steps: curing a resin raw material into a plate-shaped resin block, carbonizing in an inert atmosphere, and respectively introducing a nitrogen source and a boron source for doping operation to obtain a co-doped plate-shaped resin block precursor; placing the co-doped plate-shaped resin block between two porous graphite plates, and carrying out high-temperature treatment to obtain a glassy carbon matrix; and immersing the glassy carbon substrate into the adhesion layer solution to form an adhesion layer, transferring the adhesion layer into a deposition solution which comprises a bismuth-containing solution and a gold-containing solution, forming bismuth-gold nano-dots on the adhesion layer, and washing and drying the bismuth-gold nano-dots to obtain the plate-shaped glassy carbon electrode. Through directional arrangement of crystal orientations, the tantalum carbide coating achieves higher electrical conductivity and thermal conductivity. And the sensitivity and the service life of the plate-shaped glassy carbon electrode are obviously improved and prolonged.

According to the high-strength complex-phase hot-rolled wire rod for the 2300 MPa grade stranded wire and the manufacturing method of the high-strength complex-phase hot-rolled wire rod, after Mo-V high-carbon components are rolled and spun into the wire rod, online molten salt section quenching isothermal treatment is conducted, the wire rod is subjected to front-section molten salt treatment and cooled at the cooling speed larger than or equal to 39 DEG C / s, the wire rod enters a bainite phase region from an austenite state, and then the high-strength complex-phase hot-rolled wire rod is obtained; the method comprises the following steps: carrying out high-temperature treatment on austenite to promote part of austenite to be converted into bainite, then carrying out later-section molten salt treatment, increasing the molten salt temperature, promoting unconverted retained austenite to be decomposed and converted into sorbite, carrying out isothermal tempering, and finally carrying out roller way slow cooling to prepare the hot-rolled wire rod of which the microscopic structure comprises a complex-phase structure consisting of tempered bainite, tempered sorbite and ferrite, by means of the method, complex-phase structure regulation and control and online toughening can be achieved, the material cost and the production efficiency are both considered, the tensile strength is 1552-1602 MPa, the percentage reduction of area is 32%-38%, and therefore off-line heat treatment is avoided, and ultrahigh-strength stranded wires are efficiently produced.

The invention discloses a graded graphitization degree porous carbon material, a preparation method and application, the graded graphitization degree porous carbon material comprises an inner layer low graphitization area, a middle layer transition area and an outer layer high graphitization area from inside to outside, the preparation method comprises the following steps: S1, carbonizing a carbon source to obtain a carbon precursor, and activating the carbon precursor to obtain activated carbon; a porous carbon skeleton is obtained; and S2, under the atmosphere of H2 / Ar mixed gas, carrying out high-temperature treatment on the porous carbon skeleton to obtain the graded graphitization degree porous carbon material. The invention discloses a graded graphitization degree porous carbon material and a silicon-carbon composite negative electrode material prepared by taking the graded graphitization degree porous carbon material as a substrate, and through spatial design of the graphitization degree of the porous carbon substrate, the silicon-carbon performance is synergistically improved in the atomic scale (interlayer spacing regulation and control) and the microscale (pore structure optimization); a battery assembled by the silicon-carbon composite negative electrode material has excellent cycling stability and rate capability, and also has relatively high initial specific capacity and initial coulombic efficiency.

The invention belongs to the technical field of porous tantalum carbide ceramic preparation, and particularly relates to a preparation method of porous tantalum carbide ceramic based on a broken framework, which comprises the following steps: S1, preparing dipping slurry; s2, a polyurethane foam template is immersed in the dipping slurry, the polyurethane foam template is fully pressed so that the holes can be filled with the slurry, and the template is repeatedly rolled through a roller till no slurry flows out of the template; s3, drying the impregnated template, performing high-temperature treatment on the dried template, and cooling to room temperature to obtain a porous tantalum carbide framework; s4, crushing the porous tantalum carbide skeleton into a crushed skeleton with the size of 0.1-5 mm; s5, preparing a phenolic resin solution, mixing the crushed framework with the phenolic resin solution, then transferring the mixture into a mold, and forming after applying a certain pressure to obtain a porous tantalum carbide green body; the crushing brackets are stacked and spliced together to form a porous structure, the pores of a finished product can be adjusted by changing the sizes of the crushing brackets, and the crushing bracket can be applied to finer pores and is extremely low in shrinkage rate.

Methods and apparatuses for virtualizing building management systems. An apparatus embodiment comprises a processor that receives a temperature adjustment command from a building application via a first application programming interface (API). The command specifies a target temperature for a designated space. The processor validates the access rights of the user for the command, translates the command into one or more device-specific control parameters, and communicates these parameters to an on-premise building management system via a second API. This enables execution of the temperature adjustment to achieve the desired temperature value for the building space.

The invention belongs to the technical field of Chinese wolfberry processing, and particularly relates to a production method of fresh-locked Chinese wolfberry rich in high-value active ingredients and the fresh-locked Chinese wolfberry. According to the method, the Chinese wolfberry fruits are pretreated before vacuum drying, namely preheating is carried out, high-temperature treatment on the fresh Chinese wolfberry fruits is rapidly realized, and the influence of stress reaction and long-time heating in later drying on functional active ingredients of the Chinese wolfberry fruits is prevented by combining medium and short infrared waves and a short-time high-temperature process. The sensory quality (such as color value and meat texture) of the Chinese wolfberry is kept at a higher level, the functional active ingredients of the Chinese wolfberry are protected, and the loss of nutritional ingredients is reduced. And the fresh-locked Chinese wolfberry fruits prepared by the process disclosed by the invention are stable in quality and have good reproducibility.

The application provides a preparation method of a single-atom catalyst, and comprises the following steps: (1) heat treating nitrogen-doped carbon material in an inert atmosphere to obtain a graphene-like carrier material; (2) mixing the graphene-like carrier material with a solvent, preparing a graphene-like dispersion liquid through ultrasonic treatment, and drying the graphene-like dispersion liquid in a protective atmosphere through low-temperature staged drying to obtain a foam metal-graphene-like material; and (3) performing liquid-phase ultrasonic stripping on the foam metal-graphene-like material to obtain a single-atom catalyst. Compared with the prior art, the application eliminates the high-temperature treatment of the foam transition metal in a reducing atmosphere, and compared with the traditional high-energy-consumption high-temperature (above 500 DEG C) treatment method, the method is more moderate and has lower production cost.

The application discloses a modification method of waste tire thermal cracking carbon black and the obtained carbon black. The method comprises the following steps: (1) high-temperature treatment of thermal cracking carbon black; (2) adding the thermal cracking carbon black after high-temperature treatment in step (1) into an acid solution, stirring to obtain an acid washing thermal cracking carbon black water suspension, and drying after water washing to obtain acid washing thermal cracking carbon black; and (3) mixing the acid washing thermal cracking carbon black obtained in step (2) with a silane coupling agent and performing heat treatment to obtain modified thermal cracking carbon black. The modification method reduces the ash content of the thermal cracking carbon black, enhances the surface activity of the thermal cracking carbon black, improves the reinforcing performance of the thermal cracking carbon black in rubber, increases the use amount of the thermal cracking carbon black, and makes the thermal cracking carbon black have a wider application.

The invention provides a special fiber material and a preparation method thereof, and belongs to the technical field of polymer composites.The preparation method comprises the following steps that cellulose and an ethanol solution are mixed, polyvinyl alcohol and a 3-glycidoxypropyltrimethoxysilane solution are added, the pH is adjusted to be acidic, heating, suction filtration and drying are conducted, and modified cellulose is obtained; mixing expanded graphite, deionized water, ammonium persulfate and dilute sulphuric acid, heating, cooling, dropwise adding amino polyethylene glycol silane, heating, washing and drying to obtain modified expanded graphite; the preparation method comprises the following steps: mixing modified cellulose, modified expanded graphite, phosphate montmorillonite, 3-(methacryloyloxy) propyltrimethoxysilane, bisphenol A diglycidyl ether and 2-methylimidazole, stirring, heating, defoaming, and carrying out two-stage constant-temperature treatment to obtain the special fiber material. The special fiber material disclosed by the invention has good flame retardance, mechanical strength, water resistance and filtering performance, and can be applied to various organic composite boards, filter membranes and the like with high quality requirements.

The present invention relates to an annealing system which can be used to anneal workpieces, for example vehicle bodies. According to the invention, an annealing chamber, a feed air system, an exhaust air system and one or more air circulation systems are provided.

A reactor system can comprise a substrate carrier, which can be configured to move a substrate within the reactor system, and / or a translating arm; a temperature measurement device; a processor; and / or a tangible, non-transitory memory configured to communicate with the processor having instructions stored thereon that, in response to execution by the processor, cause the processor to perform operations. The temperature measurement device can be coupled to the substrate carrier and / or translating arm, and / or the temperature measurement device can be coupled another component of the reactor system. The temperature measurement device can be configured to measure a temperature of a processed substrate within the reaction system. The processor can perform operations including measuring the temperature of the substrate; and / or comparing the measured temperature with a reference temperature.

The invention belongs to the technical field of preparation of nano silicon materials, and particularly relates to a method for preparing nano silicon by etching a silicon-aluminum alloy and a nano silicon material thereof. Comprising the following steps: placing a pretreated silicon-aluminum alloy sample wafer in an etching tank containing a main etching solution, etching under the action of an alternating pulse electric field and ultrasonic-megasonic coupling, and adjusting the pH value to 2.5-3.0 by using acetic acid; quickly washing the silicon-aluminum alloy sample wafer subjected to main etching, putting the silicon-aluminum alloy sample wafer into an electrolytic cell containing a composite buffer solution of oxalic acid and sulfuric acid, and performing electrochemical fine etching under a direct-current constant-voltage electric field; and when the etching current density is reduced to 10% of the initial value, the reaction is terminated, and after low-temperature treatment and low-temperature vacuum drying, the nano silicon material with the residual Al content of 8-12 wt% and the O / Si atomic ratio of 0.15-0.25 is obtained. According to the invention, the problems of out-of-control components, structural damage and serious pollution in the prior art are solved, and the nano silicon material with controllable residual aluminum element and low oxygen-silica ratio can be stably prepared.

To provide a bleaching method capable of bleaching a colored fiber product even without high temperature treatment or using a chemical agent, and also to provide a bleaching device used for the bleaching method.SOLUTION: A bleaching method involves a step to irradiate a colored fiber with light including a wavelength of 360 to 600 nm in the presence of oxygen.SELECTED DRAWING: Figure 5

The application belongs to the technical field of electrocatalytic synthesis of ethylene oxide, and specifically discloses a preparation method of a double-interface electrocatalyst for preparing ethylene oxide and application of the double-interface electrocatalyst, and the preparation method comprises the following steps: carrier synthesis, a soluble tin salt and urea are dissolved in deionized water, stirring is performed until complete transparency, then the mixture is transferred to a high-pressure reaction kettle for high-temperature treatment, white precipitate is obtained by centrifugation after the treatment, the white precipitate is washed, dried and calcined to obtain crystalline SnO2 nanoparticles; the crystalline SnO2 nanoparticles are immersed in a soluble cerium salt solution, and after the immersion is completed, drying and calcination are performed to obtain a CeO2 / SnO2 carrier; silver is loaded on the CeO2 / SnO2 carrier to prepare an Ag-CeO2 / SnO2 catalyst. The catalyst prepared by the application is applied to the electrocatalytic preparation of ethylene oxide, ethylene reacts with active oxygen species generated by anode electrolysis water or sulfuric acid decomposition in an indirect oxidation manner, the prepared catalyst has higher selectivity for ethylene oxide; in addition, the electrolyte is H2SO4 and KOH, and the corrosion problem of halogen to equipment is avoided.

This invention discloses a sol-gel preparation method for mesoporous carbon membranes, as well as the mesoporous carbon membranes and their applications. The preparation method includes: (1) dissolving phenolic compounds in a solvent and adding a template agent; (2) adding aldehyde compounds and amine compounds to obtain a mixture; (3) subjecting the mixture to a hydrothermal reaction to obtain an organic membrane precursor; and (4) carbonizing the organic membrane precursor at high temperature; wherein the solid content of the mixture is 20-30 wt%. The method of this invention significantly shortens the production cycle, has high preparation efficiency and success rate, can be molded to any size, and the obtained porous structure can withstand high-temperature treatment without collapsing. The obtained mesoporous carbon membrane can be applied to gas separation or liquid separation.

The invention discloses a rotary incubator suitable for multiple tissue engineering materials, and belongs to the technical field of experimental equipment. According to the device, a culture tube is placed in a clamping sleeve at a corresponding position, at the moment, a second electric push rod can be controlled to work and shorten to pull a sliding rod to move, the sliding rod can move to drive a top pressing disc to move downwards, and the pressing disc can make contact with the top of a container when moving downwards, so that the container can be clamped and limited; if an opening in the top of the container is not provided with a sealing cover, the opening of the container can be sealed through pressing of the pressing disc, and the container can move along with the clamping sleeve when the driving mechanism drives the container to be shaken up through axial abutting of the clamping sleeve and the container, so that the situation that the container topples over and leaks liquid due to circumferential shaking-up movement is avoided, and the shaking-up processing stability is improved; the heater main body on the rear side can perform constant-temperature treatment through air blowing or heat radiation, so that the placement and culture effects are improved.

The application discloses a method for preparing a carbon-carbon heater by means of pitch impregnation, and the carbon-carbon composite material prepared through the process steps of preform preparation, pitch impregnation and solidification, high-pressure pitch impregnation, low-temperature carbonization, repeated impregnation and carbonization and high-temperature graphitization has the advantages of high density and low resistivity, and the photovoltaic single crystal furnace heater is further machined. First, micron composite powder of boron carbide-tungsten carbide is uniformly applied on the surface of the heater and is subjected to high-temperature treatment, so as to form a dense ceramic coating, and then a mixed pyrolytic graphite layer is deposited in a methane-argon atmosphere, and through the above two coating processes, the silicon vapor corrosion resistance of the carbon-carbon heater is significantly enhanced, so that the service stability and service life of the carbon-carbon heater are improved.

The invention relates to a slow-release phosphorus removal agent as well as a preparation method and application thereof, in particular to a slow-release phosphorus removal agent for phosphorus pollution of a low-temperature water body as well as a preparation method and application thereof. The slow-release phosphorus removal agent comprises the following components in parts by weight: 1500 parts of potato starch, 160 parts of sodium citrate, 100 parts of ammonium sulfate, 20 parts of sodium chloride, 60 parts of potassium chloride, 10 parts of magnesium sulfate, 10 parts of calcium chloride and 1 part of maltose, wherein the weight ratio of the maltose to the pure water is 1: 20000. The preparation method comprises the following steps: 1, preparing the potato starch-based slow-release medicament; 2, forming and purifying starch microspheres; and step 3, preparing a sustained-release medicament finished product. The method has the beneficial effects that low-temperature water body phosphorus removal flora is efficiently activated, and the phosphate removal efficiency is remarkably improved; the slow-release characteristic meets the low-temperature treatment requirement, and long-acting stable phosphorus control is achieved; and the method is environment-friendly, excellent in economical efficiency and suitable for large-scale application.

The invention discloses a preparation method of a chalcogenide glass dual-band wide-spectrum antireflection film. The method comprises the steps of substrate cleaning, vacuum baking, ion source cleaning, sequential deposition of nine layers of thin films with specific materials and thicknesses, constant-temperature treatment after plating, cooling and workpiece taking, and double-sided plating. According to the invention, by optimizing the film system design and key process parameters, especially selectively using the ion source to assist deposition, the anti-reflection film with high transmittance (higher than 91.7% and 94.6% respectively) at the two wavebands of 3-5 [mu] m and 8-12 [mu] m is successfully prepared on the chalcogenide glass substrate. The film layer is strong in adhesive force, high in compactness, capable of passing multiple strict environmental reliability tests, excellent in comprehensive performance, good in process repeatability and suitable for a high-performance infrared optical system.

The invention belongs to the technical field of functional crystal materials, and discloses a neodymium-doped forsterite crystal, the chemical formula is Nd < 3 + >: Mg2SiO4, and the doping concentration range of Nd < 3 + > is 0.05 at%-0.2 at%. The preparation method of the neodymium-doped forsterite crystal comprises the following steps: S1, loading a synthesized Nd < 3 + >: Mg2SiO4 raw material into an iraurita crucible; s2, installing a zirconium oxide temperature field and an iraurita crucible in the single crystal furnace, and filling oxygen to inhibit decomposition and volatilization of the raw materials; and S3, melting the raw materials, carrying out constant-temperature treatment, selecting seed crystals for seeding, enabling the crystals to grow to a set length size in an equal-diameter manner until the crystals are separated from the melt after the growth is finished, and annealing in the crucible to obtain the large-size single crystals. The neodymium-doped forsterite grown by the method disclosed by the invention can still keep a stable structure in a lunar vacuum and extreme temperature environment, is not easy to oxidize or change phase, is suitable for being used as a standard sample for a long time, and can be used for calibrating a Raman spectrometer through specific wavelength and intensity signals.

The invention discloses a modified polyvinyl alcohol pyrolysis adhesive and a preparation method thereof, and belongs to the technical field of pyrolysis adhesives, and the preparation method comprises the following steps: preparing a modifier pre-dispersion liquid, synthesizing resin, carrying out segmented heating reaction, and compounding and curing. The prepared modified polyvinyl alcohol pyrolysis adhesive has high viscosity and proper fluidity in a normal temperature environment, can meet the bonding requirement of temporary fixation of devices, does not need an additional curing process, simplifies the operation process, and reduces the use cost and the time cost. And the material has excellent thermal decomposition capability, can be decomposed even in an inert gas environment, and almost has no residue after decomposition. Due to the characteristic, the pyrolytic glue has great advantages in the high-temperature sintering process of the device, when the pyrolytic glue for temporary fixing needs to be removed, the pyrolytic glue can be removed only through high-temperature treatment, the adverse effect of residues on the performance of the device is avoided, the production quality and precision of the device are guaranteed, and the method is particularly suitable for the field of manufacturing of precise devices with the high cleanliness requirement.

The invention relates to the technical field of lithium-sulfur battery positive electrode materials, in particular to a metal organic framework-based porous cubic composite material and a preparation method and application thereof, the preparation method is simple, and the obtained composite material is applied to a positive electrode of a lithium-sulfur battery and can improve the discharge capacity and the initial efficiency. The preparation method comprises the following steps: (1) performing high-temperature treatment on a metal organic framework ZIF-67 at a first temperature in an inert gas atmosphere to obtain ZIF-67 after heat treatment; the first temperature ranges from 500 DEG C to 900 DEG C; (2) in an inert gas atmosphere, the ZIF-67 subjected to heat treatment is subjected to phosphating in the presence of a phosphating agent at a second temperature, so that Co in the ZIF-67 subjected to heat treatment is partially phosphated; the second temperature is 100 to 500 DEG C; and (3) grinding the product obtained in the step (2) to obtain the composite material.

The embodiment of the invention provides a temperature processing method for a brake disc, a vehicle and a storage medium, and the method comprises the steps: obtaining the speed of the vehicle, and determining the braking parameters of the vehicle; determining a thermal input power based on the vehicle speed and the braking parameters; the temperature of the brake disc is estimated based on the heat input power and a heat balance equation, and the target temperature of the brake disc is obtained; and in response to the target temperature exceeding the temperature threshold value, thermal protection treatment is conducted on the brake disc. The technical problem that the temperature processing accuracy of the brake disc is low in the prior art is solved.

The invention provides aluminum oxide secondary coated high-magnification artificial graphite and a preparation method thereof.The preparation method comprises the steps that after artificial graphite and phenolic resin are subjected to liquid phase coating, carbonization treatment is conducted, and hard carbon primary coated artificial graphite is obtained; and mixing and coating the hard carbon primary coated artificial graphite and aluminum salt, and then carrying out heat treatment to obtain the aluminum oxide secondary coated high-magnification artificial graphite. According to the invention, artificial graphite and phenolic resin are used as raw materials, and are subjected to liquid-phase coating and high-temperature treatment to prepare artificial graphite coated with hard carbon once; and then the hard carbon primary coated artificial graphite and the aluminum salt are mixed and coated, and aluminum oxide secondary coated high-magnification artificial graphite is prepared through high-temperature treatment, so that the magnification performance of the graphite material can be effectively improved, and relatively good cycle performance can be ensured.

Non-dried allulose crystals are dried in a temperature treating step (b) in a drying apparatus at a temperature of about 25° C. to about 70° C., and in a conditioning step (c). The temperature treating step (b) may be carried out (b1) at atmospheric pressure and a residence time of about 5 minutes to about 5 hours. The temperature treating step (b) may be carried out (b2) under reduced pressure and constant temperature and a residence time from about 40 minutes to about 5 hours. The conditioning step (c) may be carried out (c1) over a period of about 30 minutes to 7 hours at a temperature from about 40° C. to about 70° C. The conditioning step (c) may be carried out (c2) over a period of about 15 minutes to about 90 hours at about 30 to about 60% relative humidity, and a temperature of about 25 to about 40° C.