100results about How to "Strong high pressure resistance" patented technology

The invention belongs to the technical field of lithium-ion battery electrolytes, and particularly relates to a high-voltage lithium-ion battery electrolyte. The high-voltage lithium-ion battery electrolyte comprises non-aqueous solvents, lithium salt and additives, wherein the additives comprise the mixture of fluoro phosphonitrile, fluoro-ether and unsaturated olefinic sultone. A lithium-ion battery using the high-voltage lithium-ion battery electrolyte is long in cycle life under the high voltage and small in internal resistance change. The high-voltage lithium-ion battery electrolyte is simple in preparing technique, easy to realize, and broad in market prospect.

The invention discloses a press fit method for a high-voltage-resistant PCB with a thick copper plate. The method includes the following steps: S1, cutting, i.e., cutting an outer-layer copper foil, a polyimide medium, pure-glue prepreg and a polyimide copper-clad plate according to required dimensions; S2, inner-layer pattern making; and S3, conducting press fit after plate lamination, the press fit including the first heating stage at the temperature of 100-140 DEG C, the second heating stage at the temperature of 140-180 DEG C, the third heating stage at the temperature of 180-220 DEG C, a warm-keeping stage, the first cooling stage at the temperature of 220-150 DEG C and the second cooling stage at the temperature of 150-100 DEG C. Conventional FR-4 prepreg is replaced by a polyimide material that has higher glass transition temperature and exhibits higher resistance to voltage, so a PCB with a thick copper plate is made to have the excellent resistance to voltage, and polyimide having high glass transition temperature can effectively ensure that resin is fully filled among lines during press fit. Moreover, press fit parameters can be adjusted and the operating time of a high-temperature and high-voltage stage can be prolonged, thus helping polyimide materials to fully fill line gaps in a high-temperature and high-voltage condition.

The invention discloses organic synthetic plugging granules for well drilling, and a preparation method and application thereof, belonging to the field of organic synthetic granular plugging agents in the technical field of well drilling. The plugging granules are prepared by blending one or more of calcium carbonate whisker, magnesium borate whisker and calcium sulfate whisker with polyetheretherketone and polyetherimide. The preparation method comprises the following steps: adding one or more of calcium carbonate whisker, magnesium borate whisker and calcium sulfate, polyetheretherketone and polyetherimide into a high-speed mixer, mixing at 380 DEG C at the shear velocity of 2.5/s for 10-30 minutes, extruding at 300 DEG C, cooling, and granulating. The organic synthetic plugging granules can be used as plugging granules and matched with plugging fibers and plugging flexible fragments for bridging plugging. The method solves the problems of poor dispersity, improper density, high water absorptivity, high degradation tendency, high brittleness, high breaking tendency, high sedimentation tendency and the like, and enhances the compression resistance and temperature resistance of the plugging bridging granules.

The invention provides a polymer film to overcome the problem that a gel polymer electrolyte is relatively low in ionic conductivity in the prior art. The polymer film comprises a first polymer matrix, second polymer particles and inorganic particles, wherein the second polymer particles and the inorganic particles are distributed in the first polymer matrix; the glass-transition temperature of the first polymer matrix is lower than 40 DEG C; the glass-transition temperature of the second polymer particles is higher than 40 DEG C; the glass-transition temperature of the polymer film is 30-60 DEG C; and the air permeability is 150-600sec/100mL. Meanwhile, the invention further discloses a preparation method of the polymer film and a gel electrolyte and a polymer battery comprising the polymer film. The gel electrolyte prepared by the polymer film provided by the invention has excellent ionic conducting properties.

The invention relates to a steam box with a vacuum rapid-cooling function. The steam box comprises a steam box body and a steam pipeline, wherein the steam box body is provided with a sealing door, and the steam pipeline is communicated with the steam box body. The steam box is characterized in that the steam box body is a house type cabin box capable of bearing a positive pressure and a negative pressure and is provided with a pipeline penetrating into the steam box from the top; the part, outside of the steam box, of the pipeline is connected with a tee joint; the tee joint is respectively communicated with a steam conveying pipeline, a vacuumizing pipeline and a deflating pipeline; the steam conveying pipeline, the vacuumizing pipeline and the deflating pipeline are respectively connected with valves; and the vacuumizing pipeline is connected with a vacuum pump. The steam box with the vacuum rapid-cooling function has the beneficial effects that the steam box has very strong high pressure resistance and negative pressure resistance, the occupied area is only two square meters, and steamed foods can be rapidly cooled to the normal temperature within 3-5 minutes, so that the labor productivity is effectively improved, and the production and processing costs are lowered.

The invention discloses a thermoacoustic oscillation suppression device based on a variable-volume damping gas storage for a liquid helium container. The thermoacoustic oscillation suppression devicecomprises a capillary tube, a gas storage sleeve, the damping gas storage, a moving plate, a screw rod fixing bearing, a ball screw, a nut pair, a screw nut fixing plate, a scaleplate, a gas storage fixing plate and a pressure sensor, wherein a corrugated pipe is adopted for the damping gas storage, so that the gas storage has the characteristics of being resistant to high pressure and high in sealing performance, and change for the volume of the damping gas storage can also be realized by virtue of the axial scalability of the corrugated pipe. Manual or automatic adjustment can be carried outon the volume of the gas storage according to the different use working conditions of the liquid helium container, so that the optimal suppression effect of the device for the thermoacoustic oscillation of the liquid helium container is guaranteed.

The invention provides a power vehicle window controller applying an MOS tube. The MOS tube is connected in serial with an output circuit of a controller circuit; a grid G thereof is connected with a control terminal of a microprocessor; a drain D thereof is connected with normally closed contacts of two normally open relays; and a source S thereof is connected with a sampling resistor and the control terminal of the microprocessor. When the power vehicle window controller circuit is turned on or turned off, a vehicle window motor can generate a startup heavy current peak value or a back-EMF which impacts relay contacts during the actuation, causes the phenomena of burning or bonding the contacts, and leads to the failure of the operation. The power vehicle window controller utilizes a microprocessor control circuit to switch on the MOS tube after the relay contacts are actuated; and the MOS tube has a rapid switching speed and can entirely bear high-power impact generated by the motor so that the power vehicle window controller can be widely applied to various large-scale vehicles with automotive electrical appliance adopting a 24V power supply.

The invention discloses an internally-engaged gear pump applicable to high pressure and large flow. The internally-engaged gear pump is composed of a pump shell, a first double-tooth ring, a second double-tooth ring, a first gear shaft, a second gear shaft, a radial compensation device, a sliding bearing, a side plate and the like, wherein the first double-tooth ring and the second double-tooth ring are symmetrically arranged in the pump body, and outer teeth of the first double-tooth ring and the second double-tooth ring are engaged to form a first gear pair; the first gear shaft and the first double-tooth ring are engaged to form a second gear pair; and the second gear shaft and the second double-tooth ring are engaged to form a third gear pair. A single input shaft is used for driving the gear pairs to rotate by grades and the distribution of moment on the shaft is reasonable; and the radial unbalance force on each grade of gear pair is small and the anti-pressure ability of the pump under a high pressure working condition is improved. Oil in the pump is pressurized by the plurality of grades of gear pairs so that the output pressure and the flow of the oil are effectively improved; and meanwhile, the two paths of oil on the outlet of the pump are overlapped so that the flow and the pressure pulse of the pump are remarkably reduced and the requirements of a high-precision hydraulic system can be met.

The invention discloses a silicone rubber insulating sizing material, a high-temperature and high-pressure resistant silicone rubber wire and a preparation process of the wire; the high-temperature and high-pressure resistant silicone rubber wire is made of the silicone rubber insulating sizing material; the silicone rubber insulating sizing material comprises raw silicone rubber, white carbon black, hydroxyl silicone oil, TiO2, aluminum hydroxide prepared through a vapour phase method, a foaming agent, a platinum catalyst, colour master, a vulcanizing agent and the like; and an antistatic agent can also be added properly. The silicone rubber insulating sizing material disclosed by the invention can satisfy the environment-friendly requirements and has excellent high-temperature and high-pressure resistant performances; the addition proportion of TiO2 is proper; the heat-resistant effect is increased while the purity and the ageing resistance of rubber cannot be influenced; the cost is relatively lower; the aluminum hydroxide prepared through the vapour phase method is small in grain size and few in impurity; the flame retardant efficiency is increased while withstand voltage influence of aluminum hydroxide prepared through a precipitation method is little; the platinum catalyst is capable of isolating air under the catalytic action of platinum, so that flame is extinguished; the foaming agent has the effect of isolating air; and thus, the flame retardant property is increased.

The invention discloses a manufacturing method of a metal-ceramic composite substrate and a composite substrate manufactured by the manufacturing method, and belongs to the technical field of ceramic metallization. The manufacturing method comprises the following steps: forming a first brazing filler metal layer on the surface of a ceramic substrate, wherein the first brazing filler metal layer is a copper and active metal brazing filler metal layer; forming a second brazing filler metal layer on the surface of the first brazing filler metal layer, wherein the second brazing filler metal layer is a copper and silver brazing filler metal layer; forming a copper layer on the surface of the second brazing filler metal layer in order to form a metal-ceramic composite substrate precursor; and sintering the metal-ceramic composite substrate precursor in vacuum. In the manufacturing method, an active metal of the first brazing filler metal layer reacts with ceramic during vacuum sintering, so that high bonding force and high thermal shock resistance are achieved. Copper and silver of the second brazing filler metal layer undergo a eutectic reaction with a copper foil, so that the copper and the silver are combined tightly with the copper foil, and the metal-ceramic composite substrate has higher resistance to high voltages and heavy current at the same time.

The invention discloses a cobalt-free high-nickel ternary concentration gradient core-shell structure lithium ion battery positive electrode material and a preparation method thereof. The chemical formula of the positive electrode material is Li [NixMn1-x-yWy] O2, wherein x and y are mole numbers, x is larger than or equal to 0.8 and smaller than 1, and y is larger than 0 and smaller than or equal to 0.1. The preparation method comprises the following steps: adding a first salt solution containing nickel, manganese and tungsten, a sodium hydroxide solution and an ammonia water solution into a reaction kettle, reacting to form a precursor inner core, adding a second salt solution containing nickel, manganese and tungsten in different proportions into the reaction kettle, fully reacting, carrying out centrifugal washing, drying, screening to remove iron, mixing with lithium hydroxide, and roasting to obtain the lithium ion battery positive electrode material with the ternary concentration gradient core-shell structure. The concentration gradient positive electrode material disclosed by the invention has a relatively good crystal structure and relatively high tap density, and a battery prepared by taking the concentration gradient positive electrode material as the positive electrode material has excellent electrochemical performance; and the preparation method is simple, controllable, low in cost and suitable for industrial production.

The invention relates to an antifouling treating agent for cleaning an electrical insulator. The antifouling treating agent comprises the following raw materials: modified silicone oil, a surfactant, an acid, an oxidant, modified polyvinyl alcohol, modified polyacrylic acid, water and ethanol, wherein the modified silicone oil is prepared from silicone oil, ethanol and polyacrylic acid through a reaction; modified polyvinyl alcohol is prepared from polyvinyl alcohol, silicone oil, a silane coupling agent, the surfactant and a dispersing agent through a reaction; modified polyacrylic acid is prepared from polyacrylic acid, the silicone oil, the silane coupling agent, the surfactant and the dispersing agent through a reaction. The antifouling treating agent for cleaning the electrical insulator has excellent oil stain removal, saline water removal, inorganic matter impurity removal and self-cleaning performance and the advantages of being non-toxic, environment-friendly, simple and convenient to operate and the like.

The invention discloses a small signal amplifier for an underground engineering parameter test and belongs to signal amplification technologies. The small signal amplifier mainly solves the problem that signals are difficult to accurately test due to over strong signal interference during the underground engineering parameter test in the prior art. The small signal amplifier for the underground engineering parameter test comprises a voltage source, a preamplifier, a low-pass filter, a high-pass filter, a trapper, a post-stage amplifying circuit and an analog to digital (A/D) converter which are connected sequentially, wherein the voltage source is connected with the preamplifier through a bridge type circuit; the preamplifier is a fixed gain amplifier or a program-controlled gain amplifier; and the post-stage amplifying circuit is a gain-adjustable amplifier. The small signal amplifier has a reasonable design and stable component performance, can effectively eliminate noise interference around the signals in underground engineering and improves the accuracy of the signal parameter test.

Disclosed is a high-voltage-resistant and flame-retardant type lithium ion battery electrolyte. The electrolyte consists of a lithium salt, an organic solvent, a film-forming additive and a flame retardant; the lithium salt is 1.5-3mol/L in concentration; the flame retardant is a fluoro phosphonitrile compound; the fluoro phosphonitrile compound has the chemical formula of N<3>P<3>F<5>OH<2>CH<3> which accounts for 5-10% of the total organic solvent based on mass percentage; and the mass of the film-forming additive is 2-4% of the that of lithium salt. The invention discloses the high-voltage-resistant and flame-retardant type lithium ion battery electrolyte and a preparation method therefor.

The invention relates to a production technology of a plastic film, and belongs to the technical field of plastic films. The production technology of the plastic film comprises the following steps of1, screening raw materials; 2, melting the raw materials; 3, adding the melted raw materials into a film blowing machine and blowing out a film; 4, cooling the film; 5, conducting corona treatment; 6,removing electricity and dust; 7, conducting spraying; 8, conducting drying; 9, cutting waste edges and coiling the film. According to the production technology of the plastic film, a free radical reaction is generated on the surface of the plastic film through corona treatment, so that a polymer is crosslinked, the surface becomes rough, the wettability of the polymer to a polar solvent is improved, and plasmas enter the surface of a printed object through electric shock and penetration to destroy the molecular structure of the printed object, so that molecules of the treated surface are oxidized and polarized; ion electric shock erodes the surface, so that the adhesion capability of the surface of printing stock is improved, and the quality of subsequent spraying is improved.

The invention provides an annular preventer for drilling and workover in an oil field, belonging to the technical field of drilling equipment. The annular preventer for drilling and workover in the oil field comprises an upper end cover, a shell and a preventer core, wherein the upper end cover is assembled with the shell through a bolt component; the preventer core is arranged in a cavity enclosed by the upper end cover and the shell; a slip assembly, a vertically-arranged packing element and a rigid torsion transfer drum are arranged in the preventer core; a packing element upper torsion conduction shaft and a packing element lower torsion conduction shaft are respectively arranged at the upper and lower ends of the packing element; the packing element upper torsion conduction shaft is of a hollow structure, and the inner wall of the packing element upper torsion conduction shaft is a circular conical surface matched with the slip assembly; and the torsion transfer drum sleeves outside the packing element. The annular preventer for drilling and workover in the oil field has the characteristics of strong high pressure resistance, good universality and long working life and is suitable for conventional down-hole operation, operation under pressure and under-balanced drilling operation.

The invention provides a high-voltage-resistant aqueous electrolyte solution for an active carbon supercapacitor and a preparation method for the high-voltage-resistant aqueous electrolyte solution, so that working voltage and energy density of the supercapacitor can be increased. The technical scheme is as follows: the preparation method comprises: (1) selecting a solvent and solutes, wherein the solvent adopts de-ionized water or distilled water, the solutes adopt analytically pure KHSO4 and LiCl, a mass ratio of the water to KHSO4 is 1,000 : (28-210), and a mass ratio of the water to LiCl is 1,000 : (0-20); and (2) preparing the electrolyte solution: pouring accurately weighed KHSO4 into the de-ionized water or the distilled water with the temperature of 20-50 DEG C, stirring to ensure that KHSO4 is completely dissolved, and adding weighed LiCl to perform dissolution so as to obtain the high-voltage-resistant aqueous electrolyte solution for the active carbon supercapacitor. The electrolyte solution prepared with the method has good use performance, good solution stability, high voltage resistance, low current collector corrosion performance and good low-temperature conductivity, thereby having wide application prospects.

The invention discloses a high-pressure-resisting pipe fitting and its preparation technique. The high-pressure-resisting pipe fitting is prepared from, by weight, 100 parts of PVC resin, 5-9 parts ofheat stabilizer, 10-15 parts of filling agent, 6-11 parts of antishock assistant, 0.25-0.9 part of lubricant, 0.1-0.5 part of light stabilizing assistant, and 0.2-0.9 part of coloring agent; the antishock assistant includes at least one of KANE ACE B-561 anti-impact modifier, KANE ACE PA 101 processing assistant; the lubricant includes at least one of ethylene bis-stearamide, oxidized polyethlenewax and paraffin. The high-pressure-resisting pipe fitting has a smooth surface and is not easy to scale; besides, the high-pressure-resisting pipe fitting can reduce fluid resistance and has good high-pressure resisting effect.

The invention discloses a sealing material for high-pressure medium delivery valves, and relates to the technical field of sealing materials. The sealing material comprises, by weight, 60-70 parts of butyl rubber, 15-20 parts of stearic acid, 12-17 parts of phenolic resin, 10-15 parts of attapulgite, 10-15 parts of ceramic powder, 8-12 parts of asbestos powder, 8-12 parts of hydrogenated castor oil, 6-10 parts of alkylphenol ethoxylates, 5-8 parts of adhesive assistants, 5-8 parts of epoxidized soybean oil, 3-6 parts of nanometer titanium dioxide, 2-4 parts of polyoxyethylene polyoxy-propanol amidogen ether, 2-4 parts of barium stearate and 1-2 parts of alumina powder. The sealing material has the advantages that the sealing material is excellent in high-pressure resistance, impact resistance, corrosion resistance and high-temperature and low-temperature resistance; good sealing effects can be realized, high-pressure media can be effectively prevented from leaking, and accordingly safety accidents can be prevented; the adhesion performance of raw materials further can be improved by the aid of the adhesive assistants, and rubber mixing and vulcanizing can be facilitated.

The invention discloses a weather-resistant high-voltage-resistant cable sheath material, and the preparation method comprises the following steps: putting metallocene polyethylene, ethylene-vinyl acetate resin, 5-8 parts of polymethyl methacrylate, a composite environmental-friendly heat stabilizer, micro encapsulated red phosphorus, expandable graphite, polyethylene wax and a super lubricant into a low speed kneader for mixing evenly; putting phthalate, conductive metal powder, carbon fiber, calcined clay, talcum powder and an antioxidant in the low speed kneader for mixing evenly with the obtained material, then putting the prepared material into a high speed kneader for heating for mixing evenly at a high speed, and cooling; sending the obtained material into a twin-screw granulator for extrusion granulating, and drying to obtain the high-voltage-resistant cable sheath material. The weather-resistant high-voltage-resistant cable sheath material is excellent in high-voltage-resistant performance, free of falling off, higher in hardness and good in thermal stability.