127 results about "Room temperature" patented technology

Positive electrode active materials are described that have a very high specific discharge capacity upon cycling at room temperature and at a moderate discharge rate. Some materials of interest have the formula Li_1+xNi_αMn_βCO_γO₂, where x ranges from about 0.05 to about 0.25, α ranges from about 0.1 to about 0.4, β ranges from about 0.4 to about 0.65, and γ ranges from about 0.05 to about 0.3. The materials can be coated with a metal fluoride to improve the performance of the materials especially upon cycling. Also, the coated materials can exhibit a very significant decrease in the irreversible capacity lose upon the first charge and discharge of the cell. Methods for producing these materials include, for example, a co-precipitation approach involving metal hydroxides and sol-gel approaches.

The invention discloses a method for preparing a ZnWO4 nanorod photocatalysis material. The method includes preparing a tungstic acid solution A, a zinc chloride solution B and a sodium citrate solution C; dropwise adding the solution A and the solution C into the solution B to form a solution D; regulating potential of hydrogen (pH) of the solution D to 6-8, and uniformly stirring to obtain a solution E; adding the solution E into a microwave hydrothermal reaction kettle, performing a heating reaction, naturally cooling the solution E to the room temperature after the reaction is finished, and taking out the reaction kettle; and opening the reaction kettle, washing a product for 4-6 times by deionized water and absolute ethyl alcohol, and drying to obtain the ZnWO4 nanorod photocatalysis material. According to the method, the microwave hydrothermal method is utilized to rapidly synthesize the ZnWO4 nanorod with the photocatalysis property, the later crystallization heat treatment is not required, the obtained product is high in purity, and the shape is controllable. The ZnWO4 nanorod with the photocatalysis effect can be synthesized in 10 minutes, and the degradation rate of the prepared ZnWO4 nanorod to rhodamine B in 50-60 minutes can reach to 97%-99%.

The invention relates to a residual stress control method of a hundred-meter steel rail, which belongs to the fields of prebending deformation control and composite straightening deformation control processes of the hundred-meter steel rail and the like. The invention adopts a method with universal rolling, cooling after rolling and composite straightening, and large-radian prebending is adopted for the hundred-meter steel rail in the cooling process after rolling, so that when the steel rail is cooled to the room temperature, the chord height is controlled in the range of 30-40mm. By combination of optimized straightening deformation rules of an 8+1 multi-roll straightening machine and the control of the curvature before straightening, the residual stress control method effectively controls the residual stress of the bottom of the rail after the hundred-meter steel rail is straightened, the residual stress values of the bottom of the rail are averagely reduced by 70MPa, all the residual stress values are less than or equal to 250MPa, and the straightness of the steel rail is improved, so that the qualification rate of the steel rail is improved, and the standard requirement of the hundred-meter steel rail is met.

The invention relates to a preparation method of carboxyl-terminated hyperbranched polyester modified organic silicon resin. The method comprises the following steps of: after heating 40 to 60 weight percent of carboxyl-terminated hyperbranched polyester, 1 to 10 weight percent of 3-glycidoxypropyltrimethoxysilane, 30 to 50 weight percent of organic silicon resin and a cross linking catalyst of which the weight percent is 1 to 10 percent of that of the carboxyl-terminated hyperbranched polyester for 1 to 3 hours at the temperature of 110 to 130 DEG C, warming to the temperature of 150 to 180 DEG C and heating for 1 to 3 hours; and finally, reducing the temperature to the room temperature and adding an organic solvent to regulate the solid content to the range of 60 to 70 percent so as to obtain the carboxyl-terminated hyperbranched polyester modified organic silicon resin. The method combines the advantages of the carboxyl-terminated hyperbranched polyester with the organic silicon resin and excellent heat resistance, excellent metal adhesion, low surface energy, excellent boiling resistance and excellent acid resistance are obtained. The resin prepared by the method disclosed by the invention can be used for preparing a coating with high temperature resistance and low surface energy.

The invention discloses a method for preparing a 2-iodine amyl -2-ene-1,4-diketone derivative by adopting visible light catalysis. The method comprises the steps of adding allene, perfluorobutyl iodide, an additive and a photocatalyst as shown in a formula (I) to an organic solvent at the molar ratio of 1:(1-2):(1-2):(0.005-0.1), stirring under the conditions of an oxygen atmosphere, visible light illumination, room temperature and ordinary pressure for 10-20h, carrying out post-treatment on a reaction liquid to obtain a 2-iodine amyl -2-ene-1,4-diketone derivative as shown in a formula (II), wherein the additive is NaI, NH4I or KI; the organic solvent is ethanol, dichloromethane, benzene, methylbenzene, tetrahydrofuran or acetonitrile; the photocatalyst is selected from one of the following components: Ir(ppy)3, Eosin Y, Rose Bengal, [Ir(dF-CF3-ppy)2(dtbbpy)]PF6, [Ir(ppy)2(tbbpy)]PF6, Ru(bpy)3(BF4)2. The method is mild in reaction condition, simple in operation, high in selectivity and good in yield; a substituent group can be expanded; and visible light catalysis is adopted, so that the method has the characteristics of being free of pollution and environment-friendly. The formulas are as shown in the specification.

The invention relates to the field of photocatalysis, and particularly relates to a visible-light-driven photocatalyst for degrading dye in wastewater, and preparation and application thereof. The visible-light-driven photocatalyst for degrading dye in wastewater is characterized in that mesoporous silicon dioxide of which the framework contains Ti atoms is used as a carrier, the mesoporous silicon dioxide carrier carries graphitic carbon nitride, and bivalent Cu ions are doped on the graphitic carbon nitride, wherein the graphitic carbon nitride with the doped cupric ions serves as a main catalyst, and the element Ti serves as a cocatalyst. The Ti atoms contained in the framework of the mesoporous silicon dioxide directly react with H2O2 in a photo-Fenton-like system to produce hydroxyl free radicals, thereby obviously improving the photo-Fenton-like reaction activity. The photocatalyst provided by the invention catalyzes degradation of methyl orange and/or rhodamine B in wastewater, and degradation can be performed at room temperature under the irradiation of visible light, thereby enabling the photocatalyst to have the advantages of mild reaction conditions, low cost and easy implementation; and the photocatalyst can be easily regenerated, and still has excellent photocatalytic performance after being regenerated many times.

The invention relates to 1,4-di(2,4-diamino phenoxy) benzenoid form high-temperature epoxy adhesive and a preparation method thereof. The adhesive consists of a component A and a component B in a mass ratio of 1:1-2, wherein the component A is a co-polymer formed by the reaction between 1,4-di(2,4-diamino phenoxy) benzene and epoxy resin; and the component B is a homogeneous transparent solution which has the solid content being 15-30 percent and is formed by the reaction between 1,4-di(2,4-diamino phenoxy) benzene and binary acid anhydride in strong polar aprotic organic solvent and toluene. The preparation method comprises the following steps of stirring and uniformly mixing the component A and the component B at room temperature in a mass ratio of 1:1-2. The preparation process is simple, and the adhesive is excellent in comprehensive performance, so that the adhesive can be widely applied to adhesion among steel, copper, aluminum and other metals, as well as ceramic, glass, resin-based composite materials and other base materials, and has an excellent industrial prospect.

The water solution of bee glue includes the following steps: mixing bee glue and 95 % concentration alcohol solution via stirring, adding to water at 50-100 deg.c to obtain mixed water solution of bee glue and alcohol with alcohol content of 20-60 %, cooling to room temperature, letting stand and filtering; recovering alcohol and filtering to obtain filtrate; repeated alcohol dissolving and filtering of the filter residue and deposited matter to obtain filtrate; merging filtrate, concentration at 80 deg.c or adding water to density of 1.01-1.04, cooling, filtering to obtain the water solution of bee glue. The alcohol dissolving and water extracting process is simple, and the water solution of bee glue has high flavone content, no organic solvent and additive, low preparation cost and good biological effect. The water solution of bee glue may be used in preparing products for lowering blood sugar, lowering blood fat, resisting inflammation and regulating immunity.

The invention discloses a hydrophobic polymer film composite coating hydrophiling modification method which comprises the following steps: preparing a tannin solution with a certain concentration, adding a certain amount of silane coupling agent alcohol solution, stirring uniformly, and regulating the pH value of the mixed solution to alkalinity; sequentially soaking the polymer film in isopropanol, deionized water and the tannin-silane coupling agent solution; and after finishing the modification, taking out the film, flushing with deionized water many times, and storing in deionized water or in a dry environment at room temperature, thereby obtaining the hydrophiling-modified high-polymer film sample. The method greatly enhances the hydrophilicity and stability of the hydrophobic polymer film, has the advantages of simple modification technique and low cost, and has wide application range.

The invention discloses an anti-corrosion and wear-resisting coating for a throwing disc of a pneumatic type feeder. The anti-corrosion and wear-resisting coating is prepared from a POSS (polyhedral oligomeric silsesquioxane) coated multiwalled carbon nanotube, bisphenol A epoxy resin, phenolic resin, wear-resisting filler, a self-lubricating material, an antifoaming agent, a leveling agent, a curing agent and a solvent. According to a preparation method of the anti-corrosion and wear-resisting coating, POSS and a multiwalled carbon nanotube are used for preparing the POSS coated multiwalled carbon nanotube firstly, then the POSS coated multiwalled carbon nanotube are mixed with the bisphenol A epoxy resin, the phenolic resin, the wear-resisting filler, the self-lubricating material, the antifoaming agent, the leveling agent and the solvent in proportion, coating slurry is prepared, the coating slurry is mixed with the curing agent and cured at the room temperature for film forming during construction, and the anti-corrosion and wear-resisting coating is obtained. The preparation process of the coating is simple to operate, and the prepared coating has excellent corrosion resistance, wear resistance, self-lubrication and water lubrication and is an ideal anti-corrosion and wear-resisting material for the throwing disc of the pneumatic type feeder, an oil conveying pipe and the like under severe working conditions.

The invention discloses an SPS connection method for tungsten and molybdenum dissimilar refractory metals. The SPS connection method is characterized in that blocky tungsten is taken as a base body, the base body and molybdenum powder are sintered and connected through an SPS technology, so that a connecting piece of the tungsten and molybdenum dissimilar refractory metal is obtained. According tothe SPS connection method, the molybdenum powder can be sintered and compacted on the tungsten base body, meanwhile, sintering connection of the tungsten and molybdenum metals is realized, so that the connecting piece with high strength and good forming effect is obtained, and the room temperature shearing strength of a joint can reach 152.9 MPa.

The invention discloses a high-strength nodular cast iron for automobile flywheels and a high-density cast molding method thereof. In the high-strength nodular cast iron base, the pearlite content is 90-95%, the ferrite content is 5-10%, and meanwhile, small amounts of Mn, Ni and Cr and trace amounts of Nb are added to perform alloy reinforcement. The high-strength nodular cast iron for automobile flywheels is composed of the following alloy elements in percentage by mass: 3.2%-3.8% of C, 2.0%-2.5% of Si, 0.1%-0.5% of Mn, 0.1%-1.0% of Ni, 0.2%-1.0% of Cr, 0.01%-0.25% of Nb, at most 0.08% of P, at most 0.025% of S, 0.02%-0.06% of Mg, 0.01%-0.05% of Re and the balance of Fe. The room-temperature tensile strength of the nodular cast iron is greater than 700 MPa, the HB is greater than 280, and the 500 DEG C high-temperature tensile strength is greater than 560 MPa. The live riser is provided with two independent flat riser necks to obtain the high-density flywheel casting, and the dynamic unbalance quantity of the flywheel is lower than 1270 g.cm, thereby enhancing the dynamic balance performance and safety.

The invention belongs to the technical field of mechanical performance testing of materials and discloses a brittle material tensile test fixture. The brittle material tensile test fixture comprises an upper connector, a lower connector, an upper universal joint, a lower universal joint, an upper C-shaped groove, a lower C-shaped groove, an upper clamping end and a lower clamping end. The upper connector and the lower connector are respectively connected with a testing machine; the upper connector is sequentially connected with the upper universal joint and the upper C-shaped groove; the lower connector is sequentially connected with the lower universal joint and the lower C-shaped groove; the upper clamping end can be inserted into the upper C-shaped groove, and the lower clamping end can be inserted into the lower C-shaped groove. A conical angle between an upper conical surface of the upper clamping end and a lower conical surface of the lower clamping end is 15 degrees and meets the requirements in appendix 37 of ASME BPV VIII-1. By application of the brittle material tensile test fixture, automatic centering of samples in a testing process can be realized to further automatically eliminate bending moment in a loading process; discontinuous relative slide in a fixture system is avoided, and accordingly loading curve continuity is guaranteed; the samples can be clamped quickly, and convenience and rapidness are achieved; the fixture is available for tensile tests at the temperature ranging from the room temperature to 600 DEG C.

The invention relates to high-strength Mg-Y-Ni-Mn alloy and a manufacturing method thereof. The high-strength Mg-Y-Ni-Mn alloy comprises 5.0-12.5% of Y, 2.0-6.0% of Ni, 0.4-1.0% of Mn and the balance magnesium and inevitable impurities. The alloy is manufactured through the following process of material preparing, vacuum melting ingot casting, cyclic homogenizing annealing, extruding and double aging. Materials do not need to be refined; the extrusion ratio is low (lambda=11); the limitations that the manufacturing process of high-performance magnesium alloy is complex and the manufacturing conditions are rigorous are broken; the process is simple; transportability is high; operation is easy, the room temperature tensile strength and the yield strength of the alloy are obviously improved; the high-performance magnesium alloy can be directly produced under existing industrial conditions; the problem that the application of the Mg alloy is limited due to the poor mechanical performance of the Mg alloy is solved; and the application range of the magnesium alloy is expanded.

A method of inducing nuclear spin hyper-antipolarization in a solid material is disclosed and described. The solid material can be subjected to an ultralow temperature and a magnetic field. The solid material can include donor nuclei and a carrier material while the material also has both a nuclear spin and an electron spin which are coupled sufficiently to allow an Overhauser effect. The solid material can be subjected at the ultralow temperature to a light source for a time sufficient to induce a substantial nuclear spin antipolarization in the solid material and form a nuclear spin hyper-antipolarized material. The ultralow temperature and light source are controlled so as to be sufficient to drive a non-equilibrium nuclear Overhauser effect of hyperfine coupled electron and nuclear spins. The resulting nuclear spin hyper-antipolarized material can be used for a variety of applications such as medical imaging and quantum computing. These materials can be readily formed relatively quickly and are generally stable at room temperatures.

The present invention provides semiconductor nanoparticles which emit light at room temperature and include a sulfide or oxide containing zinc, a Group 11 element in the periodic table, and a Group 13 element in the periodic table as a main component or a sulfide or oxide containing a Group 11 element in the periodic table and a Group 13 element in the periodic table as a main component. For example, the semiconductor nanoparticles are represented by Zn_(1-2x)In_xAg_xS (O<x≦0.5).

The invention relates to a mobile roller-type van-type heating furnace and a hot-forming subsection strengthening technique. The mobile roller-type van-type heating furnace comprises a shell, heat preservation cotton is arranged on the inner side of the shell, and a furnace door is arranged on one side of the shell. The mobile roller-type van-type heating furnace is characterized in that the shell is divided into multiple areas through one or more isolation doors, and the upper portion of each isolation door is connected with a piston rod of a telescopic cylinder. The hot-forming subsection strengthening technique is characterized by comprising the steps that 1, a boron steel workpiece is led in a furnace chamber inside the shell through rotary rollers at room temperature; 2, the contraction cylinder descends to make the lower end of the isolation door be 5-50 mm away from the workpiece; meanwhile, the isolation door divides the furnace chamber into a hard area and a soft area, the hard area is heated to be 880-930 DEG C, and the soft area is heated to be 500-800 DEG C; 3, when the workpiece is heated to be a specified heating temperature, the workpiece is led out from the heating furnace through the rotary rollers, and hot-forming punching and cooling are conducted on the workpiece. By means of the mobile roller-type van-type heating furnace and the hot-forming subsection strengthening technique, subsection strengthening production of workpieces can be achieved.

The present invention is the use of Poly(2-ethyl-2-oxazoline) in the creation of peroxide gels for various applications. Such applications include bleaching of hair, teeth, laundry or any other bleachable item. Blending of the gel is accomplished by mixing the Poly(2-ethyl-2-oxazoline) with a peroxide such as hydrogen peroxide, carbamide peroxide, sodium perborate, or sodium percarbonate, usually also with water or an appropriate organic solvent. Peroxide concentrations in these new gels can reach a 30% concentration of hydrogen peroxide while maintaining a shelf life of six months at room temperature without developing peroxide decomposition.

The invention discloses a novel high-chromium ferritic heat resistant steel, composed of the following components by mass percent: 0.08-0.1% of C, less than or equal to 0.5% of Si, 0.3-0.6% of Mn, 8.5-9.0% of Cr, 0.3-0.6% of Mo, 1.5-2.0% of W, 0.20-0.25% of V, 0.02% of Cu, 0.07-0.09% of Nb, less than 0.005% of Ti, 0.004-0.005% of B and less than 0.005% of N, and the balance of Fe and impurities. The thermo-mechanical treatment process of the steel comprises the following steps of: heating at the rate of 5 DEG C/s until the temperature reaches 1100-1200 DEG C and preserving heat for 5-10 min; and then cooling at the rate of 5 DEG C/s until the temperature reaches 900-700 DEG C, preserving heat for 5-10 s, performing compressive deformation at the deformation rate of 1/s by the deformation quantity of 50-70%; preserving heat for 0-100 s after the completion of deformation, and then performing air cooling until the temperature reaches the room temperature. The thermal treatment process provided by the invention is capable of promoting the precipitation of the MX phase having excellent stability, thereby improving the high temperature performance of the steel. Compared with the traditional thermal treatment process, the thermo-mechanical treatment process is simplified in process flow so that the production cost is reduced and the overall performance is improved; and therefore, the thermo-mechanical treatment process can be applied to actual production.

The invention discloses tomato egg coarse cereal noodles. The noodles comprise the following materials in part by mass: 200 to 250 parts of tomatoes, 350 to 450 parts of flour, 30 to 50 parts of corn peptide, 100 to 120 parts of eggs and 0.4 to 0.8 part of salt. The preparation method comprises the following steps of: mixing 350 to 400 mass parts of flour, 30 to 50 mass parts of corn peptide and 0.4 to 0.8 mass part of salt, the tomatoes which are washed, peeled and capped and crushed into sauce, and 100 to 200 mass parts of eggs which are beaten to be bubbly, uniformly stirring to form pulpy noodle materials, curing at room temperature for 15 to 20min, pressing the cured dough into wet noodles by using a noodle molding machine, drying, and packing to obtain a finished product. The tomato egg coarse cereal noodles are added with the corn peptide, the tomatoes and the eggs, and have higher nutrient value and better taste than the conventional noodles.