153results about How to "Guaranteed normal production" patented technology

The invention provides a method for preparing nanosilver powder in batches, belonging to the field of nano-material preparation. Nanosilver particles are synthetized in two steps, at first, a low-concentration reducing agent solution is slowly added into a solution mixed with silver salt, a protective agent, and a pH conditioning agent drop by drop, and then a high-concentration reducing agent solution is rapidly added drop by drop to obtain a nanosilver mixed solution; impurities in the nanosilver mixed solution are removed through a membrane separation device to obtain a nanosilver dispersion liquid; and at the end, absolute ethyl alcohol and a high-molecular dispersant are added into the nanosilver dispersion liquid, and spray drying is carried out by a spray drying device to obtain nanosilver powder in a certain particle size. The particle size of the prepared nanosilver powder is controllable, the batches are stable, the problems of non-uniform particle size during the synthesis of nanosilver, nanosilver separation, and agglomeration and acaking during powder preparation are solved, the preparation process and the operation are simple, and industrial and batches production is realized.

The invention belongs to the field of rock engineering, and specifically relates to a manufacture method of a rock sample with random fractures. The manufacture method comprises the following steps: (1) preparing a tin strip so as to simulate a crack; (2) preparing a mortar material so as to stimulate a rock material; (3) mixing and stirring the tin strip and the mortar material; (4) pouring the mixture into a forming mould so as to carry out a forming treatment through a vibrating and smashing method; (5) disassembling the forming mould; (6) maintaining the sample at a constant temperature under a constant humidity; (7) subjecting the random fracture rock sample to a low-temperature forming treatment. The manufacture method is capable of manufacturing a cracked rock with a large amount of random fractures, can conveniently modulate the probability density distribution of fractures so as to be accord with the actual situation of engineering rock, and has the advantages of simple operation, high efficiency, rapidness, and wide application range.

The invention discloses a semi-continuous production line of closed-cell aluminum foam. The semi-continuous production line comprises a composite die, a continuous preheating system of the composite die, a melt melting and distributing system, a melt foaming system and a full-automatic cooling system. The continuous preheating system comprises the composite die and a tunnel preheating kiln with amobile movable baseplate; and the composite die is formed by movably connecting a transition crucible without upper and lower cover plate with a filling die. The melt melting and distributing system comprises a melting furnace, a vacuum ladle and a tundish, a stirring device capable of sucking a tackifier in a negative pressure manner is arranged at the upper part of the tundish, and a flow port is arranged at the lower part of the tundish. The melting foaming system comprises a viscosity sensor, the stirring device capable of sucking a foaming agent in the negative pressure manner and a foaming furnace. The full-automatic cooling system comprises a cooling fan and a cooling pipe, wherein an atomizing shower head is arranged at the upper part of the cooling pipe. The semi-continuous production line disclosed by the invention can realize semi-continuous production of the aluminum foam, reduce labor intensity and further effectively ensure the consistency of product performances.

The invention discloses a halogen-free flame-retardant polypropylene material and a preparation method thereof. The halogen-free flame-retardant polypropylene material comprises components in parts by weight as follows: 100 parts of polypropylene resin, 20-35 parts of a halogen-free composite flame retardant, 5-20 parts of a toughening agent and 0.05-0.12 parts of a complex antioxidant, wherein the halogen-free composite flame retardant comprises diphosphonate piperazine, pentaerythritol diphosphate melamine salt, melamine urate and organic montmorillonite in the weight ratio being (5-20) : (5-20) : (1-5) : (1:5). According to the halogen-free flame-retardant polypropylene material, a halogen-free composite flame retardant system comprises diphosphonate piperazine, pentaerythritol diphosphate melamine salt, melamine urate and organic montmorillonite and has an excellent flame-retardant synergistic effect and excellent high-temperature resistance, particularly, hydrolysis-resistant performance can be acquired without any treatment, and the flame retardant system is not easily hydrolyzed in the forming process.

The invention relates to a preparation method for nano zirconium diboride ceramic powder, which is characterized by comprising the following steps: 1) selecting materials: selecting according to a mol ratio of 1 : 3 to 1 : 5 between Zr and amorphous boron powder in soluble zirconium salt; 2) selecting one of the two methods as follows: a) using a coprecipitation method for gel forming to obtain xerogel; b) using a sol-gel method for gel forming to form the xerogel; 3) preparing precursor powder; 4) synthesizing quickly: arranging the materials into a large current reaction synthesizer; the inside of a black lead reactor is protected by vacuum or insert gases; applying a large current directly on the black lead reactor, quickly heating to 800 and 1500 DEG C at the temperature rising speed of 50 to 500 DEG C/min, preserving the temperature for 0 to 60 minutes to obtain a powder sample; and 5) chemical processing for obtaining the nano zirconium diboride ceramic powder. The method has the characteristics of quick synthesizing speed and high efficiency; the purity of the obtained nano zirconium diboride ceramic powder is high (equal to or more than 95 percent); and the grain diameters of the obtained nano zirconium diboride ceramic powder are uniform and thin(the average grain diameter is equal to or less than 300nm).

The invention discloses a method for the underwater installation of a ship rudder system, which comprises the following steps: 1. installing a rudder sleeve on the ship before launching, testing together with a rudder shaft, assembling a rudder stock and a rudder blade to a unit, installing the rudder system in mooring after launching; 2. regulating the ship trim by regulating ship ballast status; 3. horizontally moving the rudder blade and the rudder stock immediately below the rudder sleeve; 4. using the hand chain hoist of a tackle lifting mechanism at the ship stern to horizontally move the rudder stock/ the rudder blade as a whole immediately below the rudder sleeve and meanwhile raising the hand chain hoist of a rudder cabin to lift the rudder blade to the top surface which has a certain distance with the bottom surface of the rudder sleeve; 5. sleeving lower rudder carrier parts on the rudder stock; 6. continuing to raise the rudder stock and the rudder blade, and installing a rudder carrier, a actuator and a jump stop block; 7. disassembling the tackle lifting mechanism at the ship stern, checking the whole rudder system, and finishing the whole work flow.

The invention relates to a metal-doped Na3V2(PO4)3 composite electrode material and a preparation method and application thereof. The metal-doped Na3V2(PO4)3 composite electrode material is a Na3V<2-x>M<x>(PO4)3/C composite electrode material in a micro-nano composite particle shape. According to the preparation method, an organic matter carbon source is added and can be coated on a surface of Na3V<2-x>M<x>(PO4)3/C precursor particle in an in-situ way during the hydrothermal process, can be used for preventing the Na3V<2-x>M<x>(PO4)3/C precursor particle from being grown and agglomerated and also can be decomposed to amorphous carbon during the thermal treatment process, the formation core is Na3V<2-x>M<x>(PO4)3/C particle, and a shell is a core-shell structure of the amorphous carbon. Themetal-doped Na3V2(PO4)3 composite electrode material has the advantages of favorable conductivity, excellent cycle stability, rate performance and the like. The metal-doped Na3V2(PO4)3 composite electrode material belongs to the field of an electrode material.

A method for purifying resorcinol by means of continuous crystallization belongs to the technical field of separation and purification of resorcinol, and includes: dissolving the resorcinol into methylbenzene in weight ratio of (6.0-6.1):1, and enabling solution to enter a primary crystallizer to crystallize with the temperature and stirring speed of the primary crystallizer constant; enabling magma to enter a secondary crystallizer, and crystallizing at a certain crystallizing temperature, at a certain stirring speed and by means of equal stop; enabling magma to enter a tertiary crystallizer, and crystallizing at a certain crystallizing temperature, at a certain stirring speed and by means of equal stop, wherein the temperature of the primary crystallizer, the temperature of the secondary crystallizer and the temperature of the tertiary crystallizer are sequentially decreased; and subjecting the magma to solid-liquid separation, and then scrubbing and drying obtained crystals by the methylbenzene. The method realizes continuous operation of crystallization and purification, operating cost is reduced, production capacity is improved, and stability of operating parameters is guaranteed.

The invention belongs to the field of geotechnical engineering and particularly relates to a manufacturing method for a rock test sample containing hole defects. The manufacturing method for the rock test sample containing the hole defects comprises the following steps: (1) preparing a tin ball for simulating the hole defects; (2) preparing a mortar material for simulating a rock material; (3) mixing and agitating the tin ball and the mortar material; (4) filling a molding mould with a mixture, and vibrating and molding; (5) detaching the molding mould; (6) curing the test sample under the conditions of constant temperature and constant humidity; and (7) molding the rock test sample containing the hole defects at a low temperature. According to the manufacturing method for the rock test sample containing the hole defects, the manufacturing of a plurality of the hole defects in an engineering rock body is guaranteed and the probability density distribution of the hole defects can be conveniently adjusted so as to meet the conditions of the actual engineering rock body; the operation method is simple, efficiency and rapid and the application range is wide.

The invention discloses an enzymic method for simultaneously preparing glutathione and adenylate. The enzymic method comprises the following steps: (1) generating glutathione and adenylate from GshF enzyme and Adk enzyme in a reaction tank; (2) separating the immobilized GshF enzyme and Adk enzyme in the reaction tank, or separating the free GshF enzyme and Adk enzyme by virtue of filtering equipment; and (3) separating products GSH and AMP. By virtue of the preparation method, the reaction condition in production of the GSH is optimized, the generation concentration of GSH reaches 30g/L-50g/L, and the utilization rate of amino acid is relatively high; meanwhile, by carrying out partial regeneration on ATP consumed in reaction by virtue of the Adk enzyme, the consumption of the ATP is reduced; and furthermore, the GSH and the AMP can be simultaneously prepared by virtue of the preparation method.

The invention relates to a large variable diameter shaft part induction heat-treatment and quenching technical method. A power output driven shaft is taken as an example, a continuous heating quenching way and a liquid injecting cooling quenching way are adopted, and the action procedure of a machine tool comprises the steps of: preheating from the upper end of a spline and continuously walking at variable speed to the position of a shaft neck of phi 45; preheating, stagnating, and heating for a plurality of seconds 'determining according to the actual situation; heating, stopping heating, moving to the position of phi 68 for heating, lagging, heating and injecting liquid; moving to the position of 45 for continuously heating to 3-5mm of the upper end of the spline 'wherein the moving speed is different at the two sections of phi 45 and phi 37.1 andcan be shown in numerical control programming'; moving to a certain position of the upper end of phi 37.1 'in numerical control X is equal to -53'; injecting liquid for a plurality of seconds 'determining by experiment'; and returning to zero. The method has the advantages of saving energy and reducing consumption, being convenient for operation, lightening the labor intensity, improving the working environment and the like.

The present invention relates to the perparation process of lead-acid accumulator negative pole with lead carbaonate as material. It includes the following steps: grinding and sieving lead carbonate; imxing with additives and reaction with sulfuric acid to produce lead paste; painting the lead paste to Pb-Sb or Pb-Ca alloy slab lattice; setting the slab lattice into sodium sulfate and/or sulfuric acid solution for constant current compounding to obtain the negative pole board. Compared with traditional preparation process, the present invention has less steps, lower power consumption, high material utilizatino and thus lower production cost. The production process may be combined with the recovery of waste lead-acid accumulator to reuse material and reduce pollution.

The invention provides a diaphragm-free type device for circularly electrolyzing hypochlorous acid and sodium hypochlorite. The device comprises a water softener, a water storage tank, a sodium chloride storage tank, a water supply pump, a saline water conveying pump, a diaphragm-free type electrolytic cell, a hypochlorous acid and sodium hypochlorite storage tank and an electrical control system. The device is characterized in that the diaphragm-free type electrolytic cell is provided with a cooling electrolyte flow-in opening and an electrolyte flow-out opening; an electrolyte output pump, a heat exchanger and an electrolyte input pump are sequentially connected between the electrolyte flow-out opening and the cooling electrolyte flow-in opening; the electrical control system comprises a touch screen, a PLC control module and a rectifier; and control circuits are arranged among the PLC control module, the touch screen, the rectifier, the water softener, the water supply pump, the saline water conveying pump, a conductive electrode of the diaphragm-free type electrolytic cell, the heat exchanger, the electrolyte output pump and the electrolyte input pump. The diaphragm-free type device is high in electrolytic reaction speed, high in hypochlorous acid and sodium hypochlorite yield, high in conversion rate and low in running cost.

The invention relates to a wharf ship loader telescoping mechanism rail production process and a special rail butt joint tool thereof. The production process includes the steps: producing two rail subsections; performing hardening and hardness measurement to the rail subsections; carrying out preparations before rail subsection welding, clamping the two rail subsections by the aid of the special rail butt joint tool to enable ends of the two rail subsections to be aligned and gapped, and performing weld preheating for the rail subsections; welding the rail subsections; performing postwelding heat insulation; and finally performing postwelding polishing and inspection. The machined rail subsections are subjected to medium-frequency hardening and then are in butt joint to form a whole. Joints are gapless, corrosion is less prone to occur, and service life of a rail is prolonged. Hardening of the whole rail is not needed, production cost is reduced, requirement on rail hardness is net, joints are less prone to cracks, and product quality is guaranteed.

The invention discloses a preparation method of spherical yttrium oxide powder for high apparent density thermal spraying. The method comprises the following steps: 1, preparation of yttrium oxide slurry: adding high-purity yttrium oxide serving as a raw material into a mixing container, adding deionized water into the mixing container, stirring, blending into slurry, adding a binder into the slurry, uniformly mixing, putting the mixed slurry into a sand mill, and carrying out high-speed ball milling to obtain yttrium oxide slurry; then guiding the slurry obtained after high-speed ball millingout of a sand mill, and obtaining yttrium oxide slurry; 2, spray granulation: putting the yttrium oxide slurry obtained in the step 1 into a spray dryer to prepare spherical yttrium oxide powder; and3, high-temperature sintering: placing the spherical yttrium oxide powder obtained in the second step in a high-temperature sintering furnace to be sintered, and performing high-temperature sinteringin two stages. According to the method, the solid content of the slurry is increased and microwave sintering is adopted in the preparation process, so that the spherical yttrium oxide powder for thermal spraying with high apparent density can be prepared, and the method is simple in process, free of chemical reaction and controllable in process adjustment.

The invention relates to a manufacturing method of large ink. The manufacturing method mainly comprises the steps of making a pattern, refining smoke, mixing glue, pestling, making ink and molding, sizing and drying the ink, wherein the step of mixing glue means that a smoke material and a sizing material are stirred for 6-8 minutes by using a blender, the step of making ink and molding means that a molded ink blank is put on a mass fire plate, two to four 300W-electric furnaces are arranged under the mass fire plate for heating the mass fire plate to reach 70 DEG C to 90 DEG C, the step of sizing means that compression molding is carried out on the ink blank by using a four-bar ink pressing machine for 0.5-3 hours, and the step of drying ink means that the ink is dried for 6-12 months in a natural indirect ventilation condition. The ink manufactured by the method is larger in appearance, different in shape and convenient to enjoy and store; and the additional value of the product is improved.

The invention relates to the technical field of piezoresistor discs for lightning arresters, in particular to a zinc oxide resistor disc and a preparation method and application thereof. The zinc oxide resistor disc provided by the invention is prepared from the following raw materials in percentage by mole: 85-95% of ZnO, 0.01-4.0% of Bi2O3, 0.01-4.0% of Sb2O3, 0.05-3.0% of Co2O3, 0.01-2.0% of MnO2, 0.01-3.0% of NiO, 0.01-2.0% of Fe2O3, 0.01-2.0% of A12O3, and 0.01-2.0% of Dy2O3. According to the zinc oxide resistor disc provided by the invention, a toxic substance Cr2O3 does not need to be added, various components including ZnO, Bi2O3, Sb2O3, Co2O3, MnO2, NiO, Fe2O3, Al2O3 and Dy2O3 cooperate with each other, such that the zinc oxide resistor disc has the excellent performances of highpotential gradient, high square wave through-flow capacity, low residual voltage, high square wave current and large current impact resistance, good aging resistance and the like.

The invention discloses a preparation method of nanometer molybdenum powder containing homodisperse carbon nano tubes. The carbon nano tubes and ammonium paramolybdate are selected as raw materials, hydrogen is used as reduction carrier gas, adsorption characteristics of the carbon nano tubes on nanometer molybdenum particles are utilized, and then carbon nano tube/ nanometer molybdenum powder composite powder is prepared by utilizing the adsorption characteristics of the carbon nano tubes on the nanometer molybdenum particles. The preparation technology process is modification of the carbon nano tubes-gel dissolving-gel coagulation-grinding-hydrogen gas reduction-carbon nano tube/ nanometer molybdenum powder composite powder. According to the preparation method, the carbon nano tube/ nanometer molybdenum powder composite powder is prepared by utilizing the adsorption characteristics of the carbon nano tubes on the nanometer molybdenum particles, through modification on the carbon nano tubes and mixing the carbon nano tubes and ammonium paramolybdate solution, and by adopting gel dissolving and gel coagulation and reduction process. The average grain diameter of the prepared molybdenum powder is 20-80nm, the carbon nano tubes can be dispersed evenly in the nanometer molybdenum powder, and industrial mass production can be achieved easily.

The invention discloses a high-yield synthetic method for a DD3R molecular sieve film. The high-yield synthetic method comprises the following steps: mixing a sigma-1 molecular sieve with inorganic particles to prepare a carrier; further crystalizing a DD3R molecular sieve layer on the carrier by adopting a secondary growth method; finally preparing the DD3R molecular sieve film layer by adopting a hierarchical sintering method. The molecular sieve film prepared by the method has the advantages of prevention of defects and high yield.

The invention discloses an Internet of Things system for flame glass fiber production, which is composed of three parts of a material homogenization Internet of Things subsystem, a flame injection Internet of Things subsystem and a glue-spreading collecting cotton Internet of Things subsystem. A signal acquisition module acquires state signals in the material homogenization Internet of Things subsystem, the flame injection Internet of Things subsystem and the glue-spreading collecting cotton Internet of Things subsystem, the signals are transmitted through a signal transmission module connected with the signal acquisition module, the signals are processed by a signal processing module connected with the signal transmission module, the transmitted data information can be subjected to algorithm analysis according to a large database, a regulation instruction is formed, feedback is carried out by an information feedback module, the response adjustment time is shortened, the information feedback module feeds the data information back to the material homogenization Internet of Things subsystem, the flame injection Internet of Things subsystem and the glue-spreading collecting cotton Internet of Things subsystem, and closed-loop automatic control is realized.

The invention discloses a method for preparing a 4-cypro methylene phenylboronic acid, and relates to the technical field of organic synthesis. The chlorobenzene is taken as the starting material, is subjected to a friedel-crafts reaction to generate 4-butanoyl chloride chlorobenzene, is subjected to a ring-closure reaction to generate 4-cypro formyl chlorobenzene, is subjected to a reduction reaction to generate 4-cypro methylene chlorobenzene, and is finally subjected to a Grignard boric acid reaction to generate the 4-cypro methylene phenylboronic acid. The cheap chlorobenzene, which is easy to get, is taken as the starting material, the preparation cost is remarkably lowered, the total molar yield of the product of 4-cypro methylene phenylboronic acid prepared through the 4-cypro methylene phenylboronic acid, the ring-closure reaction, the reduction reaction and the Grignard boric acid reaction is more than 35%, the production of the product is guaranteed on the basis of the low cost, and the method is suitable for industrial production.

The invention discloses a laminated organic electroluminescent device based on single-layer light emitting units, and belongs to the technical field of organic electroluminescent devices. The device is composed of a substrate, an anode, the single-layer organic light emitting units, electric charge generating layers and a cathode in sequence. The single-layer organic light emitting units and the electric charge generating layers are arranged alternately. The single-layer organic light emitting units are formed by doping organic luminescent dye in parent materials as dopant, organic materials with the high hole mobility are adopted as the parent materials of the light emitting units on odd layers, and organic materials with the high electronic mobility are adopted as the parent materials of the light emitting units on even layers. Due to the fact that the single-layer structure is adopted in the light emitting units, the number of the function layers of the laminated device is reduced, and the laminated device can be manufactured conveniently. In addition, due to the fact that the carrier transport polarity of the organic materials adopted by the electric charge generating layers is inconsistent with that of the parent materials of the adjacent single-layer light emitting units, it is guaranteed that the exciton recombination area of each light emitting unit is far away from the anode and the cathode, the exciton cancellation effect in a traditional single-layer device is weakened, and it is guaranteed that the laminated device of the structure has good performance.

The invention provides a preparation device of triisopentyl phosphate. The device comprises: a reaction coil pipe used as a reaction container of a mixed solution; an air source communicated with theinlet of the reaction coil pipe through an air inlet pipe, wherein an air inlet switch is arranged on the air inlet pipe; a heating unit used for heating the reaction coil pipe; a high-pressure buffertank, wherein the upper portion of the space in the high-pressure buffer tank is communicated with the outlet of the reaction coil pipe through a first liquid outlet pipe; a reaction liquid collecting tank communicated with the bottom of the space in the high-pressure buffer tank through a second liquid outlet pipe, wherein a first liquid outlet switch is arranged on the second liquid outlet pipe; a feeding unit used for conveying the mixed solution into the reaction coil pipe; and a first pressure gauge arranged on the high-pressure buffer tank and used for measuring the pressure of the reaction environment. The invention also provides a method for preparing triisopentyl phosphate by adopting the device. According to the invention, continuous industrial production of triisopentyl phosphate is realized, the generated byproduct methanol does not react with triisopentyl phosphate, the yield is high, and the process risk is low.