277 results about "C constant" patented technology

The invention discloses a catalyst for hydrolyzing active carbon-based COS under the condition of low temperature and a preparation method thereof, wherein a carrier of the catalyst is active carbon, and active compositions of the catalyst are alkali materials and metal oxide. The catalyst can remove COS in air at a low temperature (between 30 and 100 DEG C) and remove H2S generated by hydrolysis together. The preparation method comprises the following steps: firstly, using running water and distilled water to wash the active carbon, and drying the active carbon for 2 to 4 hours at a temperature of between 110 and 180 DEG C, wherein the active carbon can be coal and coconut husks; secondly, using a 1 mol/L KOH solution to boil the washed active carbon for 1.5 to 2 hours, performing modification treatment, and using distilled water to wash the solution until the pH value is approximately 6.0; thirdly, selecting one or more metallic salt solutions to soak the active carbon, performing modification treatment, and performing ultrasonic soakage for 0.5 to 1 hour, wherein the content of a soaking liquid is 10 to 90 percent of the mass ratio of the active carbon, and the volume of the soaking liquid is as follows: 20 milliliters of the soaking liquid is added into 10 grams of the catalyst; fourthly, drying the soaked active carbon for 2 to 6 hours in a 120 DEG C constant-temperature drying cabinet, and activating the catalyst for 2 to 4 hours under the protection of 300 to 600 DEG C N2; and fifthly, performing ultrasonic soakage on the activated catalyst in the fourth step in an alkali solution for 0.5 to 1 hour.

The invention discloses a temperature-sensitive and salt-sensitive copolymer gel. The temperature-sensitive and salt-sensitive copolymer gel is prepared from the following raw materials of acrylamide,functional monomers and starch through crosslinking and polymerizing. The temperature-sensitive and salt-sensitive copolymer gel is prepared by the following steps of (1) adding the starch into water, stirring, and pasting to the complete transparent state in a 75-DEG C constant-temperature water bath pot, so as to obtain a starch water solution; (2) adding the acrylamide and the functional monomers into the starch water solution, so as to obtain a first reaction solution; (3) adding a crosslinking agent and a free radical initiator into the first reaction solution, uniformly stirring, sealing a reaction container, and reacting for 24 to 36h at the temperature of 60 to 70 DEG C, so as to obtain a crude gel; (4) adding the crude gel into pure water, soaking and stirring for 12h, and drying, so as to obtain the temperature-sensitive and salt-sensitive copolymer gel. The synthesized temperature-sensitive and salt-sensitive copolymer gel has the characteristics that the temperature-sensitive and salt-sensitive properties with high expansion rate at high temperature and high salt condition are realized, and the like; by using the starch as a substrate for grafting and copolymerizing, the degradability of the gel is realized; the damage to stratum is little, the environment-friendly effect is realized, and the modern green development value is met.

The invention relates to a factory propagation method for detoxified red sweet potato. The method comprises the step of detoxifying test-tube plantlets, breeder seeds, stock seeds and improved variety. The method specifically comprises the following steps: firstly, cleaning potato blocks, using 800-times diluted solution of 50% carbendazim for disinfecting for 20min and then performing 26 DEG C constant temperature sprouting; adopting a high/low temperature alterative treating mode of treating for 16 hours at 26 DEG C and treating for 8 hours at 35-40 DEG C in each day for continuously treating for about 30 days when the buds grow to 0.1-0.5cm; performing stem apex detoxification, rapid tissue culture propagation, rooting and seedling hardening, rapid water culture propagation, potato vine transplanting and breeder seeds propagation; and using the breeder seeds for rowing potato and seedling in the greenhouse with a fly net in the next year; transplanting into field, performing field management, controlling pests, timely harvesting and storing the stock seeds before frosting and propagating the excellent stock seeds. According to the invention, the detoxified seedlings can be subjected to factory propagation within a short period of time, the production cost of the detoxified seedlings can be reduced and the lastly acquired detoxified improved variety is convenient for the peasant to plant, transport and store.

The invention discloses a pesticide residue detecting method and its portable detector. It omits the step of correcting instrumental light source I0 and reduces measuring error source; advances a temperature correcting model, omits 37 deg.C constant-temperature measuring condition, and needs no more heavy constant-temperature devices like water bath tank, etc. The detector: under the control of light source voltage stabilizing control circuit, the monochromatic light source generates monochromatic light; the monochromatic light beam passes through colorimetric tank holding the solution inside to be detected to irradiate a photoelectric sensor; the sensor converts the detected light intensity value to a voltage value, and then transmits the voltage to an A/D converter to convert into a digital signal, then the digital signal is inputted in a MCU system for data processing, a temperature measuring circuit converts the detected temperature signal to a digital signal to send into the MCU for temperature correction. It is especially suitable for the requirement of field fast screening or semiquantitative determination. It has simple structure, small bulk, and convenient use and can directly indicate the toxicity of pesticide residue.

The invention provides a method for sorting the self-discharge performance of a high-capacity lithium battery, and belongs to the technical field of lithium ion batteries. The method comprises the following steps: taking a lithium battery which is filled with liquid and aged at the high temperature of 45 DEG C for 2 days, and performing constant-current charging for 90 minutes at the temperature of 0.05-0.1 DEG C; performing constant-current charging for 90 minutes at the temperature of 0.1-0.2 DEG C; employing 0.3 C constant-current constant-voltage formation, wherein the upper limit protection voltage is 4.3 V, and the cut-off current is 0.01 C; testing OCV1 by adopting a tester with the voltage precision of 0.0001 V, standing for 3 days at the high temperature of 40-45 DEG C, standing for 12 hours at the normal temperature, and testing the OCV2; screening the battery with large self-discharge difference through calculating the difference value of the OCV1-OCV2; according to the conventional 0.5 C charging and discharging detection capacity of a lithium battery, performing 0.5 C constant-current charging for 60 minutes, carrying out the voltage limiting for 4.2 V, finishing a cabinet test OCV3, testing the OCV4 after placement at normal temperature for 7 days, and controlling the difference value of OCV3-OCV4 to be less than or equal to 9mv, wherein the battery with the difference value being less than or equal to 9mv is qualified. According to the lithium battery manufactured by the method, the number of secondary capacity grading batteries can be reduced, and meanwhile,the consistency and the safety of subsequent lithium battery grouping use are improved.

The invention discloses a method of nickel-copper-phosphor ternary alloy plating on a carbon fiber surface. The method comprises steps of degumming; coarsening; sensitizing-activating; putting a carbon fiber treated with sensitization-activation in a nickel-copper-phosphor plating solution for plating until end of reaction, removing, washing and drying; and placing the nickel-copper-phosphor solution in a 80 DEG C-85 DEG C constant temperature water-bath for insulation. A formula of the nickel-copper-phosphor solution comprises nickel sulfate 25-30g/L, copper sulfate 2.0-2.5g/L, sodium hypophosphate 24-27g/L and a complexing agent sodium citrate 55-60g/L, wherein a pH is 8.0-8.5. According to the method, a nickel-copper-phosphor ternary alloy plating on the carbon fiber surface can be obtained at one time, so that the method can not only simplify a nickel-copper-phosphor alloy plating technology, but also can be applied to metallization processing of other composite reinforcement.

The invention discloses a salt shrinking finishing method of silk fabrics. The method comprises the following steps: carrying out plasma treatment on a silk fabric to be treated; immersing the treated silk fabric in warm water and putting the silk fabric out; preparing the finishing liquid, namely mixing calcium chloride and deionized water to enable the calcium chloride to be dissolved, continuously adding softening agents and carrying out ultrasonic agitation to obtain the finishing liquid; impregnating the treated silk fabric in the finishing liquid, and performing salt shrinking finishing in a 50-80-DEG C constant-temperature and constant-humidity chamber; and putting out the silk fabric, washing with hot water for 2-3 times, then washing with cold water for 2-3 times, and drying in an air drying oven to obtain the silk fabric after the salt shrinking finishing. The silk fabric treated by adopting the method has the good salt shrinking effect, has the soft texture, and is fluffy and elastic; and the method is simple to operate and low in cost.

The invention provides application of carboxylation graphene oxide serving as an adsorbent in metal ion adsorption and belongs to the technical field of wastewater treatment. The application comprisesthe steps of utilizing a classical Hummers method to prepare graphene oxide, then mixing the graphene oxide with chloroacetic acid under the alkali condition, stirring in 25 DEG C constant-temperature water bath, centrifugally washing and drying to prepare the carboxylation graphene oxide. The carboxylation graphene oxide has the advantages of simple preparation method, raw materials easy to obtain, moderate reaction conditions, simple treatment technology and further good performance in a wastewater treatment aspect.

The invention discloses a carbon nitride and graphene composite material modified by organic dye. A method for preparing the carbon nitride and graphene composite material includes ultrasonically uniformly mixing g-C3N4 alcoholic solution and graphene alcoholic solution with each other, keeping the temperature of 100-240 DEG C constant for 8-24 h, centrifugally removing ethyl alcohol and carryingout vacuum drying on obtained precipitates to obtain g-C3N4/r-graphene compositions; ultrasonically uniformly mixing the g-C3N4/r-graphene compositions, the organic dye and organic alcohol C with oneanother, carrying out centrifuging, washing precipitates by the aid of organic alcohol C and then drying the precipitates under dark conditions to obtain the carbon nitride and graphene composite material modified by the organic dye. The carbon nitride and graphene composite material has the advantages that the carbon nitride and graphene composite material is provided with mesoporous structures and has large specific surface areas, the hole-charge separation speeds, the light absorption rate and the light utilization rate can be increased, the photocatalytic performance of the carbon nitrideand graphene composite material is higher than 8 times the photocatalytic performance of graphite-phase carbon nitride if the carbon nitride and graphene composite material is used for carrying out reduction on carbon dioxide and water vapor in visible light to obtain methanol.

The invention relates to a method for preparing phenol from benzene through a one-step process. According to the method, a catalyst treats coal-based active carbon as a carrier and a ferric salt as an active component, and the carrier of the catalyst is processed according to the following steps: 1, adding 100g of the coal-based active carbon washed by water to a flask, adding 250ml of a nitric acid solution with the concentration of 2-12mol/L, connecting a condenser tube to the flask, carrying out reflux processing for 10h in a 25-90DEG C water bath, absorbing a tail gas with an NaOH or Na2CO3 solution, fully washing the coal-based active carbon with tap water until the pH value is unchanged, leaching the coal-based active carbon with distilled water three times, carrying out pumping filtration, and drying the coal-based active carbon in a 110DEG C constant temperature drying box; and 2, dipping the coal-based active carbon in 20-50mL of an aqueous Fe2(SO4)3 solution with the concentration of 0.04-0.20mol/L, laying them aside for 0.5-24h at room temperature, carrying out pumping filtration, and drying the coal-based active carbon in the 110DEG C constant temperature drying box. The catalyst has the advantages of high activity, high selectivity, high stability, production cost reduction, and product quality improvement.

The invention provides a vehicle fuel and a preparation method thereof. The vehicle fuel comprises the following components in parts by weight: 5-10 parts of diesel oil, 30-80 parts of polymethoxy dimethyl ether, 1-5 parts of an alcohol combustion improver, 1-5 parts of a corrosion inhibitor, 1-10 parts of an anti-detonator, 1-5 parts of a catalysis combustion improver, 1-10 parts of a stabilizer, 1-5 parts of an anti-oxidant, 0.1-5 parts of a dispersing agent and 5-10 parts of solvent oil. The preparation method comprises the following steps: sufficiently stirring and mixing the diesel oil, the polymethoxy dimethyl ether and the solvent oil at normal temperature to obtain a first mixture; under the stirring state, adding the alcohol combustion improver, the corrosion inhibitor and the catalysis combustion improver into the first mixture to obtain a second mixture; under a stirring and 35-60 DEG C constant-temperature condition, adding the stabilizer, the anti-detonator, the anti-oxidant and the dispersing agent into the second mixture, wherein the time interval of addition between adjacent substances is 1-2 hours; and preserving the heat and standing for 3-5 hours after stirring for 1-2 hours. The vehicle fuel provided by the invention is good in stability, and the utilization rate of the polymethoxy dimethyl ether is high.

The invention provides a florfenicol-β-cyclodextrin inclusion compound and a preparation method thereof, wherein the preparation method is: A. Add distilled water to β-cyclodextrin, heat and dissolve to make a saturated solution A; B. Add ethanol to Florfenicol to prepare solution B; C. Place solution A on a magnetic stirrer, and gradually drop solution B into solution B at a constant temperature of 75-85°C at a constant speed of 500r/min to obtain clathrate solution; The combined liquid container is placed in a water bath and stirred to room temperature; D. After the cooled clathrate solution was refrigerated for 24 hours, the precipitate was obtained after suction filtration, and the precipitate was washed with ethanol, and then dried at 55°C to obtain the florfenicol-β-cyclodextrin inclusion compound. The preparation method is simple in operation and high in preparation efficiency, and the prepared florfenicol-β-cyclodextrin inclusion compound has a high inclusion rate and a greatly improved yield, and is suitable for large-scale production for preventing and controlling aquatic animals. bacterial disease.

The invention discloses a high-sparking voltage boron series-free working electrolyte and a preparation method thereof. The electrolyte comprises, by weight, 50% to 80% of a solvent, 2% to 40% of a healant, 0.1% to 1% of a passivator, 1% to 15% of a sparking voltage boosting agent, and 0.2% to 5% of a dehydrogenation agent. The preparation method comprises the following steps: S1, carrying out weighing; S2, adding the solvent, the healant and the sparking voltage improving agent into a container, carrying out heating to raise the temperature to 140 DEG C, stirring to realize full dissolving, stopping heating and stirring continuously, and cooling to the temperature of 110 DEG C; S3, successively adding the passivator and the hydrogen elimination agent into the 110-DEG C solution obtained in the step S2 and carrying out 110-DEG C constant temperature processing for 50 to 70 mins; and S4, cooling the solution obtained in the step S4 to the room temperature to obtain an electrolyte. The beneficial effects are as follows: the electrolyte does not contain boric acid or borate; the sparking voltage of the electrolyte is high and thus security and stability of the electrolyte can be realized beneficially due to the high sparking voltage; and the service life is long.

This invention relates to a basic material of a high efficient mortar DBP to be prepared by the following method: a, adding 11-14% rosin polymers into 45-55% water of 80-120deg.C slowly and mixing them in a kettle continuously to be solved fully, then adding 4-6% inorganic alkali and dissolving them completely under the 60-80deg.C constant to the complete reaction, b, adding 8-10% sulfosalt while mixing, 1-2% polyalcohol under 40-60 deg.C constant to the complete reaction, c, adding 10-11% DBP to be dissolved fully under 30-50 deg.C to be cooled to normal temperature, d, spraying and drying them to powder particles then to be matched with 3-5% DBP and 9-11% silicon powder to get the basic material of high efficient mortar DBP. This invention also relates to its compound.

The invention relates to the technical field of preparation of inorganic chemical materials, and concretely relates to a method for preparing a porous biological glass scaffold. The method for preparing the porous biological glass scaffold comprises the following steps: 1, preparing sol; 2, preparing wet gel; 3, preparing xerogel; 4, preparing bioactive glass; and 5, preparing the bioactive glass porous scaffold. The above bioactive porous material with high amount of porosity, good connectivity and controllable aperture can be prepared through using a 58S biological glass slurry to dip polyurethane foam adopted as a template, the apparent porosity of the porous scaffold obtained after dipping is carried out once is about 93%, the apparent porosity of the porous scaffold after being dipped twice decreases to about 80%, and the porous scaffold has high bioactivity in a 37DEG C constant temperature SBF solution.

The invention relates to a method for preparing peanut peptide by fractional bienzyme hydrolysis, belonging to the technical field of peanut protein processing methods. The method is characterized by comprising the following steps of: dissolving the peanut protein powder in distilled water, then placing the dissolved peanut protein powder into a 9 DEG C constant-temperature water bath, and preserving for 20min so as to passivate separated peanut protein; taking out the separated peanut protein after passivation, regulating the pH value of the protein solution to be 8.0, adding incision enzyme, and reacting for 120min in a 5 DEG C constant-temperature water bath oscillator; after reaction, regulating the pH value of the protein solution, adding flavourzyme, evenly mixing, reacting for a certain period of time in a constant-temperature water bath oscillator with a certain temperature, taking out after the reaction, placing into a 1 DEG C water bath, preserving for 5min, and cooling with cold water to obtain the peanut peptide after cooling. The invention has the advantages of low preparation cost, high peanut peptide yield, high purity, short preparation time, simple preparation method, and mild production conditions, and the mass concentration of soluble nitrogen in an enzymolysis product is high.

The invention discloses a storage and fresh preservation method of honeysuckle. The method comprises the steps that dried honeysuckle is put into a packaging bag for controlled atmosphere treatment, and then sealed and packaged. Gas used for the controlled atmosphere treatment is mixed gas of nitrogen and carbon dioxide. The sealed honeysuckle is placed in a 0-6 DEG C constant-temperature refrigeratory for storage. The method is simple in technology; the batch storage of the honeysuckle is achieved; oxidation of effective components such as chlorogenic acid and flavone of the honeysuckle, and loss of aroma components can be prevented effectively; and the storage time and quality of the honeysuckle are prolonged and improved greatly.

The invention discloses a production method of cutting picks of a coal mining machine. The production method comprises the following steps of: enabling the cutting picks which are well matched to sequentially enter a heating area of an inductor, and controlling the automatic feeding meter at 12 seconds-14 seconds; enabling the cutting picks to enter a welding area, firstly supplementing borax at the upper part of an alloy gear head, tightly shaking an alloy for a plurality of times after melting of copper, performing heat treatment when the temperature of an isothermobath is not less than 230 DEG C, gradually clamping out the well welded cutting picks, arranging into a hanging hook, rapidly lifting the hanging hook with the hand, immersing the cutting picks into a saline solution of the isothermobath, swinging left and right for 3 times, then hanging a cross rod, totally immersing the gear head alloy in the saline solution, and rapidly starting to supply water for cooling when temperature achieves 265 DEG C during feed-discharge balance; staying the cutting picks for not less than 30 minutes under the state that the variation in the isothermobath does not exceed a 20-DEG C constant temperature zone; and lifting out the cutting picks, performing salt leaching, and then washing and cooling. The difference between the production method disclosed by the invention and the prior art is that two times of heating are combined into a whole and can be completed once, thus the brazing quality is ensured, and the heat treatment quenching quality is also improved.

The invention provides a preparation method for novel high temperature resisting organic fire prevention heat insulating material. The preparation method comprises the following steps: mixing an organic silicon resin and alumina micropowder according to the mass ratio of 25-35:75-65, adding an organic solvent so as to make the raw materials be evenly mixed, adding the mixture into a 110 to 130 DEG C constant temperature oven and performing heating preservation for 3 to 12 hours so as to remove the solvent, transferring the mixture into a heating die while the mixture is still hot, carrying out the forming according to a staged temperature rise die stamping process system, and adding the material into a constant temperature oven at 200 to 250 DEG C after decompression and die ejection and carrying out the treatment for 5 to 10 hours. The prepared organic fire prevention heat insulating material has the advantages of conventional inorganic and organic fire prevention materials. The material shows the characteristics of resin material and has enough mechanical strength at a room temperature; and the material is converted into ceramic material at a high temperature, still meets the requirement of enough mechanical strength, and has stable external dimensions without deformation in the heating process. The material has a simple preparation process, and can be used for making covers and protecting cases meeting various requirements on the shape through die stamping. The method is suitable for the industrialized production.