64results about How to "Workmanship is effective" patented technology

The invention relates to a silicon-based negative electrode material, a preparation method thereof and an application of the silicon-based negative electrode material in a lithium-ion battery. The silicon-based negative electrode material comprises a silicon-based active material and a composite layer, wherein the composite layer coats the surface of the silicon-based active material and is formedby a flexible polymer, flake graphite and a conductive material; and the method comprises the steps of (1) dissolving the flexible polymer into a solvent; (2) adding the flake graphite and the conductive material into a flexible polymer solution obtained in the step (1) under the stirring condition; (3) adding an anti-solvent to a mixed coating solution obtained in the step (2) and stirring; (4)adding the silicon-based active material to the supersaturated mixed coating solution obtained in step (3) under the stirring condition, stirring and separating; and (5) carrying out thermal treatmentto obtain the silicon-based negative electrode material. The silicon-based negative electrode material is simple in preparation method and low in cost, and industrial production is easy to implement;the prepared silicon-based negative electrode material has excellent electrochemical cycle performance and swelling inhibition performance, and the service life of the lithium-ion battery can be prolonged.

The invention relates to a preparation method of copper nanowires and in particular relates to a controllable preparation method of high-yield monocrystal copper nanowires in a liquid-phase reduction manner. The controllable preparation method comprises the steps: firstly, mixing a divalent metal copper salt solution and ethylenediamine, and heating in a water bath to form a single and stable copper ion chelate compound; mixing a strong base solution with hydrazine hydrate, and preparing a reducing agent in the water bath at the same temperature; then transferring the two mixture solutions into a reaction vessel, fully stirring to reach a uniform state, covering well, and placing in the water bath at the same temperature for heating reaction to prepare the copper nanowires; and fishing out flaky copper nanowires floating on the upper layer of the solution, washing the flaky copper nanowires with deionized water and absolute ethyl alcohol in sequence three times, and drying at room temperature under an Ar gas protection condition to prepare the copper nanowires. The controllable preparation method provided by the invention has the advantages of simple process, low cost and high yield, and the prepared copper nanowires are of monocrystal structures, and have relatively smooth surfaces, uniform radial thickness, and controllable and more uniform length and diameter.

The invention relates to a hydraulic electromagnetic generation device for collecting idle kinetic energy of vehicles, which comprises a protective cover, an energy collector, a one-way valve, a hydraulic motor, an electromagnetic generator, an energy storage device, a pipeline and a buffer device, wherein the buffer device is used for controlling flow rate of fluid in the pipeline, and the energy storage device is an accumulator. The hydraulic electromagnetic generation device is high in energy conversion efficiency, is anti-fatigue, is long in service life and high in reliability, simple in structure, low in production cost, excellent in processing and engineering compatibility, capable of meeting application requirements of vehicle decelerating brake at places such as freeway toll stations, speed bump regions, turning sites and the like, effectively collecting idle kinetic energy generated from the vehicles, has low damage to roadbed and road surfaces, cannot bring any obstacles to running of the vehicles, and can also be used as an emergency power source for power utilization equipment such as lamps on sites such as large-size parking lots, gas station and the like. The energy collector arranged under the road surface can resist corrosion of rainwater and the like so that reliability and stability of power generation floor are improved.

The invention discloses a method for simultaneously separating chlorogenic acid and rutin from tobacco leaves. The method includes: weighting 200g of tobacco leave powder sieved through a 60 mesh sieve, dissolving the tobacco leave powder in water according to a material-liquid ratio of 1:20, setting temperature as 50 DEG C, and stirring and extracting the chlorogenic acid and the rutin for 120min. Petroleum ether is used for extraction and removal of oil-soluble impurities for collected filtrate, and then a chlorogenic acid and rutin extracting solution is obtained. Column chromatography isolation of the chlorogenic acid and the rutin is performed on the upper column of the extracting solution. Water of 5 times of the extracting solution in volume is first used for elution until no sugar can be detected in eluate. After the water is used for the elution, different concentration of ethanol replaces the used eluate for gradient elution. Two types of ethanol eluate 10-15% and 30-40% in concentration are respectively collected so as to obtain a chlorogenic acid solution and a rutin solution. The method for simultaneously separating the chlorogenic acid and the rutin from the tobacco leaves saves raw material and reagents, reduces development cost, and achieves good separating effects.

The invention relates to a method and a system for treating and recovering adipic acid ammonium waste liquid and the recovering method comprises the following steps: A. filtering the solid impurities in the waste liquid, B. controlling the temperature of the filtered waste liquid and acidizing the filtered waste liquid, C. decreasing the temperature of the acidulated waste liquid and crystallizing the acidulated waste liquid, D. collecting adipic acid crystal after solid-liquid separation, E. washing to get the adipic acid crystal and collecting the adipic acid crystal after solid-liquid separation. The recovering method and recovering system of the invention have the following advantages: being able to acquire purified adipic acid with standard capacitance; being able to be recycled used in the industries such as an electrolytic capacitor, etc., having a simple and efficient technique and obvious economical benefit and environment protection effect.

The invention belongs to the field of crystal preparation, in particular to an aluminum nitride crystal growth device and a corresponding process. The invention provides an aluminum nitride crystal growth device and process with controllable temperature field, which has the advantages of precise temperature field control and strong operability, and the corresponding growth process developed thereby conforms to the crystallization characteristics of aluminum nitride crystal. The preparation device comprises a top heater, a middle heater, a bottom heater, a top insulation layer, a side insulation layer, a bottom insulation layer, an infrared thermometer, a crucible and a crucible support. The device controls and adjusts the heating power of the top heater, middle heater and bottom heater according to the temperature signals of three different positions in the growth area returned by the three infrared thermometers, which satisfies the appropriate temperature field for the growth of aluminum nitride crystals condition. The invention provides a suitable growth device and an effective and feasible process for preparing a large-size, high-quality aluminum nitride single crystal.

The invention discloses a preparation method of a silver-based composite nanomaterial with surface-enhanced Raman activity, a product obtained with the preparation method and an application of the silver-based composite nanomaterial. The preparation method comprises preparation steps as follows: silver ions and melamine have a coordination polymerization reaction in water, and a coordination polymer is obtained; the coordination polymer is reduced with a sodium borohydride solution, nanosilver is generated on the surface of the coordination polymer, a layer of metal oxide is deposited on the surface of the reduced intermediate product, the deposited product is calcined, and the silver-based composite nanomaterial is obtained. The intermediate product with good morphology is obtained through the simple coordination polymerization reaction, silver sources can be uniformly dispersed in the intermediate product, the intermediate product is taken as a sacrificial template, and the silver-based composite nanomaterial with good morphology is obtained through metal oxide deposition and calcination. A process is simple, particle sizes of the obtained nanosilver particles are small, the nanosilver particles are distributed in a concentrated manner and are not prone to agglomeration under the protection of metal oxide, the stability is high, the SERS (surface-enhanced Raman scattering) effect is remarkable, and the silver-based composite nanomaterial has wide application prospect.

The invention relates to a CoSb3 thermoelectric material, in particular to a method for preparing a CoSb3 nanometer particle film. The method comprises the following steps of: firstly, weighing CoC12.6H2O powder and Sb powder according to the molar ratio of 1:3; respectively filling the powder into respective crucible; putting the crucibles and glass slide substrates into a quartz pipe; placing the quartz pipe into a horizontal pipe type furnace; vacuumizing and aerating mixed air of 95 percent of argon and 5 percent of hydrogen for multiple times and removing oxygen in the quartz pipe; raising the temperature of the tubular pipe; performing chemical vapor deposition on the glass slide substrates in a low-pressure state to acquire the CoSb3 nanometer particle film; and testing Seebeck coefficient, conductivity and heat conductivity of the CoSb3 nanometer particle film and calculating a zone time (ZT) value of the CoSb3 nanometer particle film. According to the invention, the CoSb3 nanometer particle film is synthesized by one step, the process is simple, and the diameter of the prepared CoSb3 nanometer particle is between 200 and 400nm; and moreover, the CoSb3 thermoelectric material has good conductivity and low heat conductivity, can be directly used for thermoelectricity researches, and is used for novel high-efficiency thermoelectric conversion devices.

The invention relates to a method for concentrating titanium dioxide waste acid by adopting a reverse osmosis process. The method comprises the following steps: pressing titanium dioxide waste acid with acid concentration of about 20% in a filter to remove micro-grained suspended matters, pressurizing through a high-pressure pump, enabling a small part of titanium dioxide waste acid to penetrate through a reverse osmosis membrane through a reverse osmosis device to prepare clean fresh water, and feeding the clean fresh water to a clean fresh water storage tank for later use; reserving sulfate radicals and other impurities for a large part of titanium dioxide waste acid, feeding into a cooling crystallizing groove, stirring, fully separating out and settling the impurities, conveying concentrated waste acid into a pressure filter, and putting concentrated waste acid subjected to impurity removal into a circulating groove for reverse osmosis treatment; when the acid concentration is more than 40%, feeding titanium dioxide waste acid to a sulfuric acid production device, mixing with concentrated acid for increasing the concentration, and removing the impurities to prepare 98% concentrated sulfuric acid. According to the method, titanium dioxide waste acid is effectively concentrated until 98% concentrated sulfuric acid is prepared, so that the difficult problem of recycling of titanium dioxide waste acid is solved; and the method has the advantages of being low in process energy consumption, simple, effective, stable to perform, remarkable in economic and environmental benefits and the like.

The invention relates to a method for increasing the yield of pachymic acid of poria cocos liquid fermented mycelium. The method comprises the steps of performing liquid fermentation on the a poria cocos bacterial strain ZJ2, and adding a masson pine extract, cellulose and composite vitamin B into a liquid seed culture medium and/or a liquid fermentation culture medium for poria cocos fermentation. By the method provided by the invention, the yield of the poria cocos mycelium can be optimized and maximized, the pachymic acid content of the mycelium is increased, industrialized production of the mycelium can be realized, the problem of damage to wild pine forest resource caused by the fact that poria cocos sclerotium is cultivated by pine tree pockets is solved, and foundation is laid and technical guarantee is provided for comprehensive development and industrialized production of the medical and edible value of the poria cocos ; the method is simple in process, effective and short in fermentation cycle, has application value in industrialized production, and can successfully fulfill the aim of obviously increasing the yield of the expression products.

The present invention relates to an energy-saving decompression gas-supplying method of natural gas and its equipment, including the processes of two-stage pressure regulation and twice temperature compensation of carriage-unloading of natural gas skid carriage, and is characterized by that at the same time of two-stage pressure regulation and twice temperature compensation a jet-pipe decompression by-pass with valve is parallelly-connected. Said invention possesses the following advantages: its process is simple, easy to implement and effective, said carriage-unloading mode can greatly raisethe utilization rate of skid carriage, and can solve the problem of that the skid carriage can not be cleanly unloaded.

The invention belongs to the technical field of new materials, and provides a new wear-resistant tire material and a preparation method thereof. The wear-resistant tire comprises the following raw materials in parts by weight: 50-85 parts of natural rubber, 12-28 parts of chlorohydrin rubber, 8-12 parts of alkali-free glass fiber, 8-23 parts of silicon dioxide, 7-21 parts of carbon black, 1-8 parts of stearic acid, 2-18 parts of octyl oleate, 1-9 parts of magnesium salt whisker, N 2-12 parts of tert-butyl-2-benzothiazole sulfonamide, 0.08-0.23 parts of silane coupling agent, 1-3 parts of protective wax, 0.1-1.9 parts of leveling agent, the crystals of the magnesium salt whiskers The whisker diameter is less than 1 μm, the alkali-free glass fiber is chopped fiber, and the leveling agent includes the following raw materials in parts by weight: 30-40 parts of sodium urealate polymer, 12-15 parts of hexamethylenetetramine, Sodium chloride 1.8-2.5 parts. The above-mentioned raw materials are kneaded and heated to form new tire materials, and the Acron wear is between 0.18-0.24cm3, achieving the effect of improving wear resistance.

The invention relates to a method for concentrating titanium white waste acids through a gas-liquid contact technology. The method concretely comprises the following steps: the white waste acids are pressed in a titanium white waste acid tank into a gas-liquid contact evaporator, the titanium white waste acids are jetted through nozzles to form mist, high temperature hot wind is sent to a gas-liquid contact evaporator through a blower, directly upwardly contact titanium white waste acid droplets jetted by the nozzles and is rapidly cooled, and water in the waste acids is massively evaporated to concentrate diluted waste acids; a gas and liquid mixture at the upper portion of the gas-liquid contact evaporator enters a gas-liquid separator and undergoes rotation and separation, the obtained gas is discharged through the discharge port of the gas-liquid separator, and condensed water is recovered; the concentrated waste acids at the lower portion of the gas-liquid contact evaporator are sent to a vacuum flash evaporation tank, and are concentrated and cooled; and the flash-evaporated steam enters a vacuum condensation jet pump, and the concentrated waste acids are sent to a storage tank, and are stored to be treated. The method effectively solves the titanium white waste acid recycling problem, and has the advantages of low energy consumption, simplicity, effectiveness, stable operation, and substantial economy and environment benefits.

The present invention discloses an emergency rapid water treatment method, wherein a variety of pollution water or poor quality water can be treated through the process of the present invention, and the effluent quality can meet the national drinking water standard. The method comprises: 1, pumping raw water into a cyclone-type catalysis device through a lifting pump to carry out an electrolysis catalysis reaction; 2, conveying the water after the electrolysis catalysis reaction to an electrolysis flocculation device to carry out an electrolysis flocculation reaction, and adding a flocculant after the electrolysis flocculation reaction; 3, filtering the liquid obtained in the step 2 through a filtering bag to obtain a clear liquid; 4, conveying the clear liquid to a fine filter to carry out fine filtration; 5, conveying the liquid obtained in the step 4 to an electrocatalysis adsorber to carry out an electrocatalysis adsorption reaction; 6, carrying out micro-filtration and ultra-filtration on the liquid obtained in the step 5; and 7, conveying the liquid obtained in the step 6 through a high pressure pump, and obtaining the drinking water meeting the standard under the effect of a reverse osmosis membrane.

The invention discloses a lithium titanate and lithium iron phosphate system lithium ion battery. The anode material of the battery comprises components of, by mass: 85-95% of lithium iron phosphate, 1-10% of an aqueous binder, and 3-10% of a conductive agent. The cathode material of the battery comprises components of, by mass: 85-95% of lithium titanate, 1-10% of an aqueous binder, and 2-10% of a conductive agent. Pure water is adopted as a solvent in the preparation of the anode and cathode materials, and water content is strictly removed in subsequent processes. The method provided by the invention is advantaged in low cost, excellent processing performance, and convenient operation. The battery is advantaged in safe and reliable performance, and long circulation life. The battery is suitable to be applied in fields such as hybrid electric vehicles, quick-charge range-increasing pure electric bus system, large energy-storing systems, domestic energy-storing electric stations, and military products with requirements on high performance.