42results about How to "No breakdown" patented technology

The invention relates to a 600V extra-high voltage aluminum electrolyte capacitor working electrolyte and a preparation and an application thereof; the working electrolyte comprises the following materials: 44.5-80.3% of main solvent, 5-15% of auxiliary solvent, 8-15% of solute, 0.5-2.5% of sparking voltage enhancer, 6-10% of stabilizer and 0.2-3% of hydrogen absorbent; the preparation method comprises the following steps: mixing the main solvent and the auxiliary solvent evenly, heating the mixture to 60-90 DEG C; adding sparking voltage enhancer, heating the mixture to 135-155 DEG C; cooling the heated mixture to 65-80 DEG C by circulating water, adding the solute and the stabilizer, heating the product to 105-135 DEG C; finally, adding the hydrogen absorbent and natural cooling to obtain the working electrolyte. Proper sparking voltage enhancer and stabilizer are added in the electrolyte to improve the high voltage resistant and high temperature resistant properties of electrolyte and to ensure the electrolyte to have low aerogenesis property; the aluminum electrolyte capacitor prepared by using the electrolyte has long service life and high voltage resistant property, and can not be broken down as the sparking voltage of the electrolyte is unstable.

The invention relates to the technical field of semiconductor defect analysis, in particular to a failure analysis method for a gate oxide defect original appearance. The method includes the steps that firstly, a semiconductor structure to be tested is screened out under the preset voltage condition, wherein the semiconductor structure to be tested has a gate oxide defect; secondly, the semiconductor structure to be tested is operated, the semiconductor structure has the gate oxide defect, a metal interconnection layer is ground off, a scanning electron microscope voltage comparison method is used for determining the position of the gate oxide defect, an interconnection line, a dielectric layer and a gate are removed in sequence, a contrast layer having the high contrast ratio with the transmission electron microscope contrast ratio of the gate oxide is deposited on the rest of the gate oxide, a transmission electron microscope sample is manufactured on a defective gate area, and finally analysis is conducted through a transmission electron microscope. According to the failure analysis method for the gate oxide defect original appearance, the gate oxide defect original appearance can be clearly observed, and a forceful basis and a forceful direction can be provided for finding the processing technology defect of the gate oxide.

The invention, which relates to the technical field of an electrowetting display device, discloses an electrowetting display device capable of controlling ink movement and a preparation method thereof. The display device comprises an upper substrate and a lower substrate. The upper substrate consists of an upper support plate, a first electrode, and a sealant; and the lower substrate includes a lower support plate, a second electrode, a hydrophobic insulating layer and pixel walls and ink control posts are arranged at the pixel walls. In addition, the invention also discloses a preparation method for the electrowetting display device. Because of the ink control posts arranged at the pixel walls, a reliable control way is provided for ink movement. When ink is opened, the ink control posts are compatible with the ink and are repellent to water, so that ink in four pixel grids around the posts is collected towards the posts to realize oriented movement of ink under pressurization and thus the ink movement direction can be controlled. Meanwhile, ink in the pixel grids is reduced because the ink is collected to the posts during the pressurization process, so that the aperture opening ratio of the pixel grid increases.

The present invention relates to the technical field of electrolytes, in particular to a highly aqueous and high-stability electrolyte used for an aluminum electrolytic capacitor and a preparation method therefor. The electrolyte comprises the following raw materials in parts by weight: 10-14 parts of ammonium adipate, 6-10 parts of a water-proofing agent, 4.5-7 parts of ammonia, 3-5 parts of ammonium formate, 1-2 parts of p-nitrobenzoic acid, 0.5-1 part of phosphoric acid, 6-10 parts of glycol and 50-70 parts of deionized water. The electrolyte is prepared by means of interaction among the raw materials and by strictly controlling a weight proportion of the raw materials; the sparking voltage of the prepared electrolyte can reach 102 V and the conductivity rate of the prepared electrolyte can reach 100 ms/cm; and the electrolyte has good electrochemical properties, has the advantages of high frequency, low impedance and high stability, and can be applied to manufacturing of the aluminum electrolytic capacitors.

The invention relates to the technical field of electrolytes and particularly relates to an electrolyte for a high-conductance and long-life aluminum electrolytic capacitor and a preparation method thereof. The electrolyte is composed of the following raw materials in weight part: 8-12 parts of ammonium benzoate, 6-10 parts of ammonium adipate, 4-6 parts of polyethylene glycol, 1.5-2.5 parts of mannitol, 2-3 parts of boric acid, 2.5-3.5 parts of ammonium sebacate, 0.2-0.4 part of ammonium hypophosphite, 0.6-1.0 part of p nitrophenol, 3-5 parts of ammoniacal liquor, 0.1-0.3 part of EDTA and 55-75 parts of glycol. According to the technical scheme of the invention, based on the interaction of the above-described materials, the weight proportion of all the raw materials is strictly controlled, and the scintillation voltage of the prepared electrolyte is up to 380V. The conductivity of the prepared electrolyte is up to 5.5ms/cm. meanwhile, the electrolyte is good in electrochemistry characteristics, high in conductivity and long in service life, thus being applied to the manufacture of aluminum electrolytic capacitors.

The invention relates to a special pressure transmitter for a water pump. The special pressure transmitter for the water pump comprises a base, a buffering sheet, foam cotton, a steel wire, an O-shaped seal ring, a sensor, a shell, a circuit board, a silicone wire, a Hirschmann joint, an air guide tube and an insulation sleeve, wherein a groove used for accommodating the O-shaped seal ring is formed in the outer circle of the sensor; the O-shaped seal ring is clamped with the sensor via the groove; a metal tube is arranged at the top of the sensor; the air guide tube is in inserted connection with the metal tube; a cavity with an open top is formed in the base; the sensor is arranged inside the cavity; the buffering sheet is arranged between the bottom of the cavity of the base and the bottom of the sensor; the foam cotton is arranged between the buffering sheet and the bottom of the sensor; the buffering sheet is clamped with the foam cotton via the steel wire; the circuit board is fixedly arranged in the insulation sleeve; the insulation sleeve is fixedly arranged in the shell; the circuit board is connected to the Hirschmann joint via the silicone wire; the top of the base is connected to one end of the shell; the other end of the shell is connected to the Hirschmann joint.

The present invention relates to the technical field of electrolytes, in particular to a high-sparking and anti-lightning electrolyte for an aluminum electrolytic capacitor and a preparation method therefor. The electrolyte comprises the following raw materials in parts by weight: 1.5-2.5 parts of ammonium dodecanedioate, 0.8-1.2 parts of ammonium sebacate, 5-9 parts of sorbitol, 4-6 parts of boracic acid, 4-6 parts of diethylene glycol monobutyl ether, 1-2 parts of polyvinyl alcohol, 0.4-0.6 part of p-nitrobenzyl alcohol, 0.1-0.3 part of ammonium hypophosphite, 6-10 parts of ethylene glycol nano silica sol and 60-80 parts of glycol. The electrolyte is prepared by means of interaction among the raw materials and by strictly controlling a weight proportion of the raw materials; the sparking voltage of the prepared electrolyte can reach 590 V and the conductivity rate of the prepared electrolyte can reach 0.5 ms/cm; and the electrolyte has good electrochemical properties, has the advantages of high sparking voltage, lightning resistance and the like, and can be applied to manufacturing of the aluminum electrolytic capacitors.

The invention belongs to the technical field of cables and particularly relates to a submarine high voltage cable which is formed by a conducting unit, a metal shielding layer, a water-resistant layer, an inner sheath, an armoring layer, an outer sheath and an outer sheath protective layer which are arranged sequentially from inside to outside. The conducting unit is formed by a conductor, an insulation layer, an insulation shielding layer and a conductor protective layer. On one of any cross sections, the circle center of the conductor coincides with the circular center of the insulation layer, the diameter of the insulation layer is 1.5 to 5 times that of the conductor, and the minimum value of the thickness of the insulation layer is 1.5mm. Filling rope groups and reinforcing part groups are distributed outside the inner sheath in an alternating mode and cling to the inner sheath. The outer sheath protective layer is made of polyamide. The insulation layer is made of organosilane crosslinked polyethylene or special materials. The invention further discloses a manufacturing method of the submarine high voltage cable. The submarine high voltage cable mainly has the following advantages of being proper in mechanical performance redundancy, capable of saving resources, high in abrasion resistance, water seepage resistance, sea water resistance and shielding performance and good in high voltage transmission.

To provide a TIG (inert gas shielded tungsten arc) welding torch in which the seizure in the contact faces between a collet and a collet body is prevented to facilitate the exchange of an electrode, the phenomenon that arc heat conducts from the electrode to a torch body via the collet body is suppressed and large welding current can be made to flow, and whose using rate can be increased. The TIG welding torch is provided with a torch body, a collet supporting an electrode located at the center of the torch body, and a collet body supported by a metallic member in contact with the inside thereof and supporting the collet in contact therewith. The collet body is composed of a cylindrical insert member fitted to the tip part of the collet body and having a receiving hole of the electrode at an axial core part, and the balance collet body shell having an inserting hole of the collet. The insert member is formed of an electrically conductive metal having high electrical conductivity and having impact resistance and wear resistance. The collet body shell is formed of an electrically conductive metal having low thermal conductivity.

The present invention relates to the technical field of electrolytes, in particular to a high-sparking and long-service-life electrolyte for an aluminum electrolytic capacitor and a preparation method therefor. The electrolyte comprises the following raw materials in parts by weight: 3-5 parts of ammonium sebate, 1-2 parts of ammonium pentaborate, 1-2 parts of sorbitol, 1.5-2.5 parts of ammonium dodecanedioate, 8-12 parts of a sparking boosting agent, 4-6 parts of branch-chain organic acid, 0.05-0.15 part of organic phosphate, 0.4-0.6 part of p-nitrobenzyl alcohol, 0.1-0.3 part of p-nitrophenol, 5-7 parts of ethylene glycol nano silica sol, 4-6 parts of Y-butyrolactone and 55-75 parts of glycol. The electrolyte is prepared by means of interaction among the raw materials; the sparking voltage of the prepared electrolyte can reach 535 V and the conductivity rate of the prepared electrolyte can reach 1.8 ms/cm; and the electrolyte has good electrochemical properties, has the advantages of high sparking voltage and long service life, and can be applied to manufacturing of the aluminum electrolytic capacitors.

The invention provides a full-range calibration device and method of high voltage nanosecond pulse voltage divider calibration factors to reduce the measurement deviation of nanosecond pulse voltage in a pulse power technology. According to the full-range calibration device and method, the characteristic that the calibration coefficient of a nanosecond pulse electric field measuring probe can be calibrated by devices such as a GTEM cell or a TEM cell in a large amplitude range is utilized, by correlating the nanosecond pulse voltage and the nanosecond pulse electric field, the present situation of a nanosecond pulse voltage non-standard measurement system under a high-voltage level is skillfully avoided, the calibration of the calibration coefficient of the nanosecond pulse divider under hundreds of kilovolts voltage level is achieved, and the traceability problem of hundreds of kilovolts voltage measurement in the pulse power technology is solved.

This invention relates to a high dielectric constant stress control material characterizing that its mass composition includes: raw rubber: 100, stearic acid: 0.5-1.2, nm-ZnO: 5-10, TiO2: 6-10, olefin oil: 15-25, carbon black: 20-30, coupler: 2-3, sulfur: 2-3, dioxide DIPB: 3-4, accelerant TMTD: 2-3, and mixing and injection molding technics are applied to process it, which is advantaged that it can be prepared to a resistance-capacitance stress tube to control the stress of the cut place of shield of the cable to alter the potential distribution of the cable insulation surface so as to uniform the electric field and the break through phenomenon will not happen since field strength of this place is uniformly distributed.

The invention discloses an electric hot-water bottle heat-generating body material formula which comprises the following ingredients, by weight, 70 to 90 parts of ceramic powders, 5 to 10 parts of adhesives, 0.2 to 6 parts of reinforcing agents, 3 to 8 parts of polyvinyl alcohols, 5 to 15 parts of tungsten, 2 to 5 parts of palladium, 3 to 8 parts of iridium, 1 to 3 parts of ruthenium, and 1 to 5 parts of sintering aids. The invention belongs to the field of electric hot-water bottle heat-generating body materials and concretely provides a hot-water bottle heat-generating body material formula with the advantages of a simple process, good heat resistance performance, high heat conductivity, energy saving and consumption reduction, safety and non-toxicity, and a long service life.

The invention belongs to the technical field of cables and particularly relates to a submarine high-voltage cable. The cable comprises a conductive unit, a metal shielding layer, a waterproof layer, an inner sheath, an armor layer, an outer sheath and an outer sheath protection layer. The conductive unit comprises a conductor, an insulation layer, an insulation shielding layer and a conductor protection layer. On any one cross section, the circular center of the conductor and the circular center of the insulation layer coincide, the diameter of the insulation layer is 1.5 times to 5 times of that of the conductor, and the minimum insulation layer thickness is 1.5mm. Filling rope layers and reinforcing elements are distributed on the outside of the inner sheath alternately and are attached to the inner sheath. The outer sheath protection layer is made of polyamides, and the insulation layer is made of silane crosslinked polyethylene or special materials. The invention further discloses a production method for the cable. The cable and the production method have the advantages of being appropriate in mechanical performance redundancy is, capable of saving resources, anti-abrasion, anti-water-seepage, anti-seawater, good in shielding performance and capable of transmission high voltages.

The invention provides a megawatt wind power blade, an assembling and manufacturing method thereof and a blade tip manufacturing method, and belongs to the technical field of wind power equipment. Themegawatt wind power blade comprises a blade body and a blade tip, wherein the top end of the blade body is provided with an installing structure for connecting the blade tip, the blade tip is detachably connected to the top end of the blade body through an installing structure, all the blade tip is made of insulating materials, the thickness of the blade tip is 10 cm-40 cm, and smooth transitionis adopted at the top end of the blade tip. According to the megawatt wind power blade, no lightning arrester is arranged at the top end of the blade tip, all the blade tip is made of insulating materials, no conductive or semi-conductive substances are contained in the blade tip, smooth transition is designed at the top end of the blade tip, accordingly, the insulating intensity of the blade tipis improved, the phenomena of breakdown and slipping lightning cannot happen in the blade tip thunder and lightning current arc climbing process, and blade tip lightning protection actionability and reliability are greatly improved.

The invention relates to a working electrolyte of a wide-temperature and high-pressure aluminum electrolytic capacitor, which comprises solvents glycol and r-butyrolactone, solutes 1,6-Dodecanedioic acid (1,6-DDA), dimethylamine and additive phosphoric acid, and pure water, and the weight percentages of the components are respectively 10 to 37 percent : 50 to 68 percent : 8 to 12 percent : 3 to 5 percent : 0.1 to 0.6 percent : 2 to 4 percent. The preparation of the working electrolyte comprises the following steps: (1), 1,6-DDA is poured into a mixed solvent of glycol and r-butyrolactone and stirred and mixed, and then dimethylamine liquefied gas is pumped in; and the mixture is continuously stirred; (2), the electrolyte already reacted in step (1) and on the whole clarified is continuously heated to a temperature of 65 to 80 DEG C; then additive phosphoric acid is added; and finally, pure water is added, and the electrolyte is naturally cooled. Materials utilized in the working electrolyte has the advantages of low cost, good solubility and better freezing resistance performance, thereby causing the working electrolyte to be provided with good forming ability and high temperature stability.

The invention belongs to the technical field of cables and particularly relates to a submarine high-pressure cable. The submarine high-pressure cable is composed of a conductive unit, a metal shielding layer, a water retention layer, an inner protecting bush, an armor layer, an outer protecting bush and an outer protecting bush protection layer; the conductive unit is composed of a conductor, an insulating layer, an insulation shielding layer and a conductor protecting layer, on any cross section, the circle center of the conductor coincides with the circle center of the insulating layer, the diameter of the insulating layer is 1.5-5 times that of the conductor, and the minimum value of the insulating layer thickness is 1.5 mm; filling rope groups and reinforcing piece groups are distributed outside the inner protecting bush in an alternate mode, and both the filling rope groups and the reinforcing piece groups are tightly attached to the inner protecting bush; the outer protecting bush protection layer is made of polyamide; the insulating layer is made of organosilane crosslinked polyethylene or a special material. The invention further discloses a manufacturing method of the submarine high-pressure cable. The submarine high-pressure cable and the preparation method thereof have the advantages that mechanical property redundancy is more proper, more resources are saved, wear resistance is better, water seepage performance is better, seawater resistance is better, shielding performance is better, and high voltage can be transmitted better.