58results about How to "Low requirements" patented technology

A method for preparing fiber toughness SiO2 aerogel composite material in normal pressure drying condition relates to a preparation method of fiber toughness SiO2 aerogel composite material. The method solves the problem that a supercritical drying method for preparing large-size fiber toughness SiO2 aerogel has over-high requirements on device conditions. The preparation method of fiber toughnesscomposite material comprises the following steps: obtaining fiber toughness SiO2 aerogel composite material after sol-gel, ageing, solvent displacement, surface decoration, washing and drying processing. The method is characterized by low production cost, low requirements on device, good safety and the like. The fiber toughness SiO2 aerogel composite material prepared by the method can be made into flexible and rigid composite material according to the form and characteristics of a fiber prefabricated part, has complete block and low thermal conductivity, and is hydrophobing. The fiber toughness SiO2 aerogel composite material has wide application prospect in the heat preservation and insulation field.

The invention discloses a plate-type ballast bed turnover device comprising a longitudinal moving mechanism, a horizontal moving mechanism, a vertical lifting mechanism, a turnover mechanism and a special fixture, wherein the longitudinal moving mechanism is connected with the horizontal moving mechanism through a slideway and a sliding chute; the horizontal moving mechanism is connected with the vertical lifting mechanism through a slideway and a sliding chute; the turnover mechanism is connected with the vertical lifting mechanism; the special fixture is fixedly arranged at one end of the turnover mechanism; the whole device is arranged on a main girder structure of hoisting equipment; and therefore, the requirement for equipment position control when the device carries out clamping operation on a plate-type ballast bed is met, the efficiency is increased, and meanwhile the precision is higher. Due to the adoption of a design structure that various regulating mechanisms are used simultaneously, the spatial omnibearing regulation is realized, the plate mounting and dismounting requirements can be better controlled, requirements for conditions of operation fields can be reduced, the working safety is greatly improved, the working efficiency is greatly increased, and the construction cost is reduced.

The invention discloses a medical titanium alloy artificial joint precise forging method. According to the method, Ti6A17Nb alloy bar materials are fed and made into blanks first, the blanks are heated in a resistance furnace to 840-880DEG C, the heat of the blanks is preserved for 30-60 minutes, rod bending is conducted, sand blowing is conducted, surface defects are polished, and glass lubricant dip-coating is conducted; the blanks are heated in the resistance furnace to 900-960DEG C, the heat of the blanks is preserved for 30-60 minutes, in-die forging forming is conducted, edge cutting is connected on an edge cutting machine, sand blowing is conducted so as to remove surface oxidation layers, and surface defects are polished; the blanks are heated in the resistance furnace to 750-780DEG C, the heat is preserved for 30-60 minutes, polishing and sand blowing treatment are conducted, and finally Ti6A17Nb medical titanium alloy artificial joint forge piece finished products are obtained. According to the method, the processes of blank making and rod bending are further arranged before die forging, so that the material utilization rate is improved, and the production cost is greatly reduced; a rectification process is added after die forging, so that the size precision of forge pieces is improved, forging defects are reduced, and the product pass rate is improved.

The invention discloses multifunctional high-temperature microwave metal smelting equipment. The multifunctional high-temperature microwave metal smelting equipment comprises a power supply system, a control module, microwave sources, a microwave reaction cavity, a microwave heating container, a temperature measuring device and a discharging device. The wave-absorbing reaction cavity is of an odd number metal structure with not less than five faces and is fixedly connected to a frame of the equipment; the microwaves are arranged on the side walls of the microwave reaction cavity; the microwave sources are connected to the power supply system through the control module; a sealing furnace lid is arranged on the top of the microwave reaction cavity; the temperature measuring device in signal connection to the control module is arranged on the furnace lid; a cavity bottom plate fixedly connected to the microwave reaction cavity is arranged in the bottom of the microwave reaction cavity; a through hole is formed in the center position of the cavity bottom plate and a lifting base of the discharging device is arranged on the lower part; and the wave-absorbing reaction cavity is arranged in the through hole penetrating through the cavity bottom plate and is placed in a wave-transmitting insulating sleeve on the lifting base. The multifunctional high-temperature microwave metal smelting equipment disclosed by the invention has the characteristics of being simple in structure, high in heat efficiency and heating rate, good in heating uniformity, wide in applicability and energy-saving and consumption-reducing.

The invention relates to a sealing structure of a camshaft cover and a cylinder head and a sealing method thereof. In the sealing structure, a sealing face (1) of the camshaft cover is provided with a gel storage slot (2); silica gel is coated in the gel storage slot; and the camshaft cover is tightly pressed on the cylinder cover by a bolt. With sealing by notch and silica gel, the requirement on roughness and planeness of the sealing face is not so high, thereby reducing the requirement and sealing condition on the sealing face, reducing manufacturing cost, and realizing excellent and lasting sealing.

The invention discloses a preparation method of a polyethylene glycol microcapsule used as a composite phase change and energy storage material. The polyethylene glycol/ethyl cellulose microcapsule is prepared according to a principle of preparing the microcapsule through an organic phase separation method. The method provided by the invention is simple in process, few in involved raw material types, high in efficiency, and environmentally protective. The polyethylene glycol/ethyl cellulose microcapsule prepared by the invention changes phases in a certain temperature range to absorb or release heat, and can be used as an energy storage, temperature adjustment and phase transition material. Through changing ratio of the raw materials, a cladding rate of the polyethylene glycol in the microcapsule can be modified, thereby meeting a plurality of energy storage and temperature adjustment requirements; through adjusting technology conditions, the microcapsule with different particle sizes can be prepared, thereby meeting requirements of different application areas.

The invention discloses a water-soluble polytriazine macromolecular material. 2, 4-dichloro-6-(2,5-disulfo-1-aniline)-[1,3,5]-s-triazine is synthesized by using cyanuric chloride and aniline-2,5-disulfonic acid as raw materials. The water-soluble polytriazine macromolecular material disclosed by the invention has the beneficial effects that the synthesis process of the water-soluble polytriazine macromolecular material is simple, the needed conditions are low, and the macromolecular material is suitable for large-scale industrialized production.

The invention provides an acute liver injury inducer and application of the acute liver injury inducer to establishment of a severe model mouse, and belongs to the field of model making of animal models. The acute liver injury inducer is a mixed solution comprising carbon tetrachloride and olive oil. The application is that the acute liver injury inducer is injected into a clean mouse abdominal cavity, and the acute liver injury severe model mouse is obtained after 12-48 h. According to a model making method, the model making success rate is high, condition requirements are low, the method issimple and convenient, the model making period is short, repeatability is good, the liver injury is obviously changed, demands for a liver experiment are sufficiently met, a target tool is provided for a mechanism researching the liver injury, the acute liver injury severe model mouse is particularly suitable for researching the pathogenesis of the differential liver injury, meanwhile a good toolis provided for screening of liver-injury-resistant drugs, and the acute liver injury severe model mouse can be used for efficacy observation.

The invention discloses a method for preparing different types of nitrogen-doped graphene with low-temperature plasma. The method comprises the steps that a nitrogen-containing compound is added intoan oxidized graphene solution with the concentration of 0.5-50 mg/ml to obtain a mixed solution, wherein the mass ratio of the nitrogen-containing compound to the oxidized graphene solution is 1:1-1:10; the mixed solution is subjected to ultrasound dispersion for 15-60 minutes to obtain a dispersion solution; the dispersion solution is subjected to centrifugal separation, a separated precipitate compound is subjected to freeze drying to obtain powder of the nitrogen-containing compound and the oxidized graphene; the powder is subjected to low-temperature plasma discharge in the atmosphere of reducible and/or inert gas to obtain different types of nitrogen-doped graphene. Compared with the prior art, the method is simpler, low in condition requirement and suitable for large-scale production, improves the benefits and reduces the cost.

The invention relates to a steel sheet film strain test force-applying apparatus which includes a donate-shaped steel frame, a steel sheet stretching test piece, sliding swallow tail holders, swallow tail groove guide rails, guiding plates, frame reinforcing side plates, force-transmitting bolts, top bearing plates and hydraulic jacks. The steel sheet film strain test force-applying apparatus has same structure at each side thereof, and the sides are axially symmetrical in such a manner that in terms of structure, the sides are centrally symmetrical and axially symmetrical. Each side is configured such that the steel sheet stretching test piece is clamped by an upper sliding swallow tail holder and a lower sliding swallow tail holder; the sliding swallow tail holders can slide up and down along the swallow tail groove guide rail, can be adjusted at horizontal level; the top bearing plate is driven by the hydraulic jack to move outwardly; the top bearing plate drives the swallow tail groove guide rail to move outwardly through the force-transmitting bolts so as to realize the stretching of the steel sheet stretching test piece; and the force-transmitting bolts are supported and positioned by the frame reinforcing side plate and the guide plate. According to the invention, the apparatus can simulate axial and ring-direction strain born in the operation of a petroleum pipeline, is easy to operate, safe and reliable.

The invention discloses a building dynamic room temperature prediction method based on an equivalent RC model. According to the method, the influence of disturbance and ventilation in a building is not considered, the heat storage and release effect of a heat accumulator of the building is considered, the heat storage and release capacity of the building is regarded as heat capacity to analogize acapacitor element in a circuit, heat transfer resistance of the building is regarded as heat resistance to analogize a resistor element in the circuit, and in addition, solar radiation and heat (cold) are analogized to be a current source in the circuit. The method applies a system identification theory. An equivalent RC model structure of a single building is established based on the building thermal process. Model step-by-step driving is carried out by using hour-by-hour room temperature monitoring data of several different stages in the actual operation process of the building and hour-by-hour heat (cold) supply quantity historical data of corresponding stages; and corresponding hourly meteorological conditions and initial conditions are input, and model parameters are identified stepby step through a genetic algorithm (GA), so that an equivalent RC model with determined parameters is obtained, and the dynamic average room temperature of the building is predicted.

The invention discloses nitrogen-doped grapheme and a preparation method. The method comprises the following steps: preparing graphene oxide; adding deionized water to graphene oxide, carrying out ultrasound treatment and centrifugation to obtain a graphene oxide dispersion, adding urea I into the graphene oxide dispersion, carrying out ultrasound treatment, and then placing in a reaction kettle to obtain nitrogen-doped grapheme I, wherein the reaction temperature is 160 DEG C and the reaction time lasts for 3 hours; adding melamine to absolute ethyl alcohol to obtain a mixture, mixing the mixture with the graphene oxide dispersion, then placing in a high pressure reaction kettle to obtain nitrogen-doped grapheme II, wherein the reaction temperature is 180 DEG C and the reaction time lastsfor 8 hours; mixing the graphene oxide dispersion, calcium chloride and oxalic acid powder in an ultrasound treatment manner, dissolving thioacetamide in deionized water, mixing the two in the ultrasound treatment manner to obtain a mixture, vibrating the mixture in the ultrasound treatment manner for 1 hour, and heating by an electromagnetic furnace to obtain nitrogen-doped grapheme III, whereinthe reaction temperature is 80 DEG C and the reaction time lasts for 6 hours. The nitrogen-doped graphene prepared according to the preparation method provided in the invention has the advantages that the quality is relatively high, defects are reduced, and the comprehensive performance of the nitrogen-doped graphite is improved.

The invention discloses a method of preparing amino modified nanometer silicon micropowder by ambient pressure drying and belongs to the technical field of preparation of novel materials. The method disclosed by the invention comprises the following steps: carrying out reaction on silicon powder as a raw material and water under the catalytic effect of an alkali to obtain a SiO2 sol; adding then standing SiO2 sol and an amino modifier into methylbenzene for backflow modification; and filtering and washing and finally drying under ambient pressure to obtain the amino modified nanometer silicon micropowder material. The method disclosed by the invention is carried out at ambient pressure and is mild reaction condition, simple in process and easy to prepare on a large scale.

The invention discloses a ganoderma lucidum spores oil. The acid value of the ganoderma lucidum spores oil is (0.15-0.30)KOHmg/g, the peroxidation value index is (0.04-0.06)g/100g, and the content of the landmark functional component, ganoderma lucidum total triterpenoid, is (22-26)g/100g. Compared with the prior art, the ganoderma lucidum spores oil disclosed by the invention is crystal clear in luster, and has the special fragrance of ganoderma lucidum spores oil, and the effective components are reserved to the greatest extent; in addition, the residual amount of an extracting solvent can be as low as 1ppm, which is far lower than the national standard, namely 50ppm.

The invention discloses a thermal type vortex shedding flow metering device, a flowmeter and a flow measurement method of the vortex shedding flow metering device. The vortex shedding flow metering device includes a measuring pipeline and further includes a vortex generator used for making fluid generate regular vortexes. The generator is located in the measuring pipeline, a fluid channel used forthe fluid passing through is arranged on the vortex generator, the fluid channel is internally provided with a sensor used for detecting the vortex frequency, and the sensor refers to a thermoelectric sensor. The invention further discloses the vortex shedding flowmeter provided with the thermal type vortex shedding flow metering device. The invention provides the flow metering device high in anti-interference ability and the flow measurement method of the flow metering device. By detecting regular temperature variation caused by vortex signals, temperature and pressure modification is not needed when the flowmeter is installed, the installation time is shortened, and the flowmeter is suitable for more installation sites.

The invention discloses a pH-stimulus responsive nano-container and a preparation method thereof. The preparation method includes: subjecting imidazoline to ultrasonic dispersion in ethanol; adding ammonia water to adjust the pH value, adding TEOS dropwise slowly at room temperature and carrying out vigorous stirring reaction; and at the end of the reaction, conducting extraction and vacuum drying, thus obtaining the pH-stimulus responsive nano-container. Compared with other nano-containers, the pH-stimulus responsive nano-container provided by the invention is more adaptive to the environment and has high sensitivity, and at the same time of internal molecule release, the carrier decomposes, so that the nano-container can have wider application, and the preparation method is simple.

The invention relates to the treatment field of waste acid produced from acid pickling of steel, in particular to a method and a system for recovering waste acid produced from chlorohydric acid pickling of steel. The method comprises steps as follows: A, waste acid produced from chlorohydric acid pickling of the steel is pretreated, and pretreated waste acid is obtained; and B, magnesium oxide is added into the pretreated waste acid for reaction, magnesite cement is obtained, and 300-500 kg of magnesium oxide is added into each 1,000 L of the pretreated waste acid. According to the recovering method and system, the waste acid produced from acid pickling is sufficiently utilized, high-temperature heating is not required, and energy consumption during recycling is reduced greatly.

The invention relates to an attapulgite-loaded zirconium oxide adsorbent and a preparation and detection method thereof. The preparation method comprises the steps: screening powdery attapulgite and adding into deionized water to be mixed, then adding zirconium oxychloride for mixing, and obtaining a suspension; stirring and adjusting the pH to be neutral by using ammonia water; then homogenizingand dispersing the suspension liquid; standing until layering, pouring out the supernatant, and continuously flushing the precipitate with deionized water until chloride ions and ammonium ions are completely flushed; and centrifuging the precipitate by using a centrifuge, pouring out the supernatant, drying in a drying oven, and grinding and sieving to obtain the zirconium oxide modified attapulgite. According to the detection method, the improvement effect of the adsorption rate of the material before and after modification can be rapidly and accurately quantified through simple constant-temperature oscillation, filtration, atomic fluorescence detection and other operations. The adsorption efficiency of As (V) and As (III) in a dissolved state is high, the adsorption speed is high, and the requirements on a water body arsenic pollution treatment reaction system are greatly reduced.

The invention discloses a preparation method of a composite polymer adhesive for a permeable pavement, which specifically comprises the following steps: S1, mixing a resin base material, an active diluent, hydroxyl-terminated nitrile rubber, styrenated phenol and an ultraviolet light absorber to prepare a first mixture; S2, stirring and mixing a modified amine curing agent, an accelerant and an auxiliary curing agent piperazine to prepare a second mixture; and S3, adding the first mixture and the second mixture into mixing and glue-making equipment for stirring, uniformly conducting mixing, and conducting discharging and storing to obtain the composite polymer adhesive. The used mixing and glue-making equipment comprises a bottom plate, a power mechanism, a stirring mechanism, a top cover and a discharging mechanism, the power mechanism is located on one side above the bottom plate, the stirring mechanism is located above the center of the bottom plate, the top cover is located above the stirring mechanism, and the discharging mechanism is located on the side, away from the power mechanism, below the stirring mechanism. According to the invention, the problems of poor comprehensive performance and easy aging and discoloration of the adhesive in the prior art are solved.

The invention relates to an organic vegetable planting and fresh keeping method, and belongs to the technical field of planting and fresh keeping. Vegetable seedlings in seedling raising trays are selected and transplanted into planting pots containing a medium, wherein the bottom wall of each planting pot is provided with a plurality of small holes; each planting pot is buried in external soil tomake the surface of the medium in the planting pot flush with the surface of the external soil, wherein the distance between every two adjacent planting pots is more than 2 cm; planting and maintenance are conducted according to a conventional method, after the vegetables are ripened, the planting pots are taken out, and fibrous roots exposed out of the pot bottoms are cut off; after the plantingpots are conveyed to a user, the user can continue to bury the vegetables in soil to continue planting or place the vegetables in a refrigerator for cold storage; during eating, the vegetables are cut off from the planting pots or taken out from the refrigerator; if the vegetables only need to be kept fresh for 3-5 days, the planting pots simply need to be placed in a shade place and a little water is sprayed every day, or the planting pots are placed in an open container containing a smaller amount of water. The conveying cost can be reduced, the distribution mode is simplified, the fresh keeping period of the vegetables can be effectively prolonged, and the operation is simple.

The invention belongs to the field of fuel cells, and particularly relates to an electrolyte material and a preparation method thereof. The electrolyte material is (NH4)3PW12O40-xH3PO4, and the preparation method of (NH4)3PW12O40-xH3PO4 comprises the following steps: (1) dissolving NH4HCO3 and H3PO4 in deionized water to form a transparent solution; (2) dropwise adding the transparent solution obtained in the step (1) into an H3PW12O40 solution, and stirring to obtain a uniform mixed solution; (3) heating and evaporating the mixed solution obtained in the step (3) to dryness until the mixed solution becomes white powder; (4) drying the white powder obtained in the step (3) to obtain (NH4)3PW12O40-xH3PO4. The pyrolysis temperature of an anhydrous ammonium phosphotungstate-phosphoric acid complex is 200 DEG C, and the resistance in the complex is not sharply increased due to temperature rise after temperature rise, so that the electrolyte is kept to continuously and effectively work at ahigh temperature, meanwhile, additional temperature control, humidification and pressurization components are omitted, and the cost is saved.