35results about How to "Excellent long life" patented technology

The invention discloses an aromatic heterocyclic compound with a structure shown in the formula (I). R1, R2 and R3 are introduced to benzo(g) quinoxaline, benzo(g) quinolone, benzo(g) isoquinoline and other structures, and the electron density, the upward skill and the compound performance can be improved, so that the aromatic heterocyclic compound shown in the formula (I) can be applied as a good electron transporting material, and an organic electroluminescence device prepared from the aromatic heterocyclic compound has the characteristics of higher brightness, higher heat resistance, long service life, higher light emitting efficiency and the like.

The invention discloses an LED (light-emitting diode) dot matrix display screen and a combined dot matrix display screen. The dot matrix display screen comprises a heat-dissipating substrate, a PCB (printed circuit board), an uniformly-arrayed LED light-emitting unit, an imaging controller, a layout circuit conducting layer, a pervious-to-light packaging colloid for packaging LED chips, and a plastic plate forming the pervious-to-light packaging colloid for packaging the LED chips, wherein the LED light-emitting unit comprises more than one LED chips, guide lines and the pervious-to-light packaging colloid; the guide lines electrically connect the LED chips with the layout circuit conducting layer, and the pervious-to-light packaging colloid is used for packaging the LED chips; a hermetically-sealed outer cavity side wall which is hermetically connected with the plastic plate and the heat-dissipating substrate is arranged between the plastic plate and the heat-dissipating substrate; the heat-dissipating substrate, the hermetically sealed outer cavity side wall and the plastic plate defines a hermetically-sealed cavity, and the PCB is accommodated in the hermetically-sealed cavity; and the heat-dissipating substrate, the plastic plate and the pervious-to-light packaging colloid are directly contacted with the outside air. The dot matrix display screen disclosed by the invention has the advantages that of being simple in structure and low in cost and having good waterproof and heat-dissipating effects since the PCB is accommodated in the hermetically-sealed cavity formed by the heat-dissipating substrate, the hermetically sealed outer cavity side wall and the plastic plate.

Electric power is stored in a flywheel assembly, from a dc power buss, and supplied to the buss, through electronics associated with a motor/generator, its rotor integral with a flywheel supported by magnetic bearings. Upon operation, the flywheel assembly is released by mechanical backup bearings which then normally remain disengaged until shutdown as the flywheel assembly is levitated by the axial magnetic field. Enhancements developed herein smooth the flux density across discontinuities or segments present in permanent magnets due to presently limited capability for manufacture of large annular magnetic members. Herein, the introduction of a medium such as a steel cylindrical member to directly interface with the rotor as opposed to the segmented permanent magnet, greatly eradicates induced eddy current and heat on the rotor. In addition, exhibited is an annularly slotted rotor which allows for greater surface area for flux absorption.

The invention belongs to the technical field of lead-acid battery and provides a high-performance anti-corrosion compound coating grid of a lead-acid battery and a preparation method thereof. The preparation method comprises the following steps of: coating a macromolecule conducting layer on the surface of a lead-acid battery grid; mixing 3,4-ethylenedioxythiophene, graphene oxide and polystyrene sulfonate, and then mixing with pure water and ball-milling, and preparing into a polymer aqueous solution; soaking the grid in the polymer aqueous solution and drying, thereby preparing into a compound coating grid. The 3,4-ethylenedioxythiophene polystyrolsulfon acid material has the characteristics of high conductivity, high mechanical strength and high anti-corrosion stability; when the compound coating grid serves as the lead-acid battery grid coating, the function of transmitting electrons is achieved, the grid can be protected and the grid is prevented from a corrosion phenomenon in the charge-discharge cycle process of the lead-acid battery; the graphene oxide is utilized to enhance the electrical conductivity and dispersity of the coating, so that the problem of ending of the service life of the battery resulted from the grid corrosion of the lead-acid battery is solved.

The invention discloses a manufacture method of an LED integrated structure, comprises the following process steps: molding a heat dissipation substrate; molding a layout circuit conducting layer; molding a position lens or the plastic part of the lens; carrying out die bonding; electrically connecting an LED chip with the layout circuit conducting layer; and packaging the LED chip and wires. Themethod has the advantages of less process, simple technology, low manufacturing cost, small heat resistance and good heat dissipation of the intermediate link of manufacturing the LED chip and accurate position relation of the lens and the chip, and the LED integrated structure has the advantages of high luminous flux, simple structure, simple assembling, good heat dissipation effect and good optical effect.

Upon operation, flywheel assemblies sand other such rotational mechanisms are released by mechanical backup bearings, which then normally remain disengaged until shutdown as the flywheel assembly is levitated by the axial magnetic field. However, either due to over heating of bearings, power failure or other stimuli, flywheels often suffer a phenomenon deemed as touchdown down from the levitation state. During this touchdown event, flywheels inherently lose rotational momentum, thus ceasing to generate and release power and often cause damage to components as well as casing. Enhancements developed herein, through the introduction of the instant secondary hybrid touchdown bearing system, allow flywheels and other such systems to retain rotational momentum and continue generation of energy. Further, the instant system negates damage to system components, as well as bearing wear.

The invention discloses an automated assembly method of microswitch shrapnel. The method comprises a first step of preparing material; a second step of setting an automated assembly of the micorswitch shrapnel; a third step that C foot is put above the shrapnel positioning device by a C-foot feed mechanism in the automated assembly of a microswitch shrapnel; a forth step that the shrapnel is clamped by a clamping mechanical arm and the shrapnel is blocked inside the C foot; a fifth step that a positioning pushrod sustains the shrapnel and locates the shrapnel in the C foot; a sixth step that a third push rod penetrates above the C foot into a through hole which is on the shrapnel; a seventh step that a bridging teed mechanism transmits the bridging to a groove which is installed on the head of the third pushrod; a eighth step that the third pushrod and the forth pushrod push synchronously the shrapnel into a box out between the bridges; a ninth step that each mechanism returns to a initial position; a tenth step of repeating from the third step to the ninth step achieving the automated assembly of the microswitch shrapnel. The automated assembly further discloses a carrying-out device of the automated assembly.

An LED lamp comprises a light-permeable lamp cover, a radiating base, LED light emitting units, a layout circuit conductive layer and a fixing mechanism, wherein the layout circuit conductive layer is connected with the LED light emitting units electrically, and the fixing mechanism is used for fixing the LED lamp at a set position. The LED light emitting units are fixed on the radiating base. The light-permeable lamp cover and the radiating base are mounted together to form a containing cavity for containing the LED light emitting units. The fixing mechanism is fixed on the radiating base directly, integrated to the radiating base, fixed on the light-permeable lamp cover directly, or integrated to the light-permeable lamp cover. Radiating through holes, which match with the LED light emitting units in arrangement, are further arranged among the LED light emitting units. Each LED light emitting unit is adjacent to the corresponding radiating through hole which penetrates through the light-permeable lamp cover and the radiating base. Both ends of each radiating through hole are communicated with air to form an air convection radiating passage. The LED lamp has the advantages that the LED lamp is simple in structure and effective in radiating, and the service life of the LED light emitting unit is long.

An electrophotographic photoreceptor includes, a cylindrical photoreceptor pipe; at least one flange which is attached to an opening of one end of the photoreceptor pipe, and which is provided with a shaft part projecting outward from the one end at a shaft center position of the photoreceptor pipe; and an earth member which is arranged to penetrate through the shaft part of the at least one flange, and which is provided on its inward side with at least one first contact part which contacts an inner circumference of the photoreceptor pipe, and on its outward side with a second contact part.

The invention provides an imidazopyrrole derivative and an organic light-emitting device using the same, and belongs to the technical field of organic light-emitting materials. Through introduction offused ring-type rigid and dense structures, the obtained imidazopyrrole derivative is high in heat stability and good in film-forming property; the imidazopyrrole derivative can be used for preparingthe organic light-emitting device, especially as a hole transport material in the organic light-emitting device; the organic light-emitting device has the advantages of high efficiency and long service life, and is superior to the existing common OLED (organic light-emitting diode) device. The obtained imidazopyrrole derivative has a good application effect in the OLED device and has a good industrialization prospect.

The invention provides a Ni-Cr-Mo-W-Nb-Al-Ti system high temperature alloy material. The high temperature alloy material comprises the following chemical ingredients by weight: less than or equal to 0.08% of C, 14.0-16.0% of Cr, 2.75-3.25% of Mo, 2.75-3.25% of W, 2.75-3.25% of Nb and Ta, 0.3-0.6% of Al, 0.4-0.7% of Ti, 5.0-9.0% of Fe, 0.01-0.05% of Zr, 0.003-0.008% of B, 0.01-0.05% of Mg, less than or equal to 0.75% of Mn, less than or equal to 0.01% of P, less than or equal to 0.04% of Si, less than or equal to 0.01% of S, and the balance of Ni and inevitable impurity elements. The invention further provides a preparation method of the material and application to a power device. The obtained alloy has the advantages of high high-temperature tensile strength, high oxidation resistance and long service life.

The invention discloses boron-doped titanium dioxide nanofiber, a preparation method for the boron-doped titanium dioxide nanofiber and application of the boron-doped titanium dioxide nanofiber as ananode material of a lithium ion battery. According to the boron-doped titanium dioxide nanofiber, the diameter of the boron-doped titanium dioxide nanofiber is nano-scale, the length of the boron-doped titanium dioxide nanofiber is micron-scale, and the surface of the boron-doped titanium dioxide nanofiber is provided with micropores. The preparation method comprises the following steps that ethylalcohol, acetic acid, tetrabutyl titanate, tributyl borate and polyvinylpyrrolidone are mixed and dissolved so as to obtain a spinning solution; the spinning solution is treated through an electrostatic spinning process so as to obtain polymer nanofiber; and the polymer nanofiber is dried and calcined so as to obtain the anatase type boron-doped titanium dioxide nanofiber. The boron-doped titanium dioxide nanofiber is large in specific surface area, the infiltration of an electrolyte and the transmission of lithium ions are facilitated, in addition, boron doping is uniform, and the electrochemical activity is better; when the boron-doped titanium dioxide nanofiber is used for the lithium ion battery, excellent rate performance and cycle performance can be realized.

The invention relates to an LED (Light Emitting Diode) dot matrix display screen which comprises a radiating base, uniformly arrayed LED illuminating units and an imaging controller, wherein layout circuit conductive layers electrically connected with the LED illuminating units are arranged on one side of the radiating base facing to the LED illuminating units; each of the LED illuminating units is independently in electric connection with the imaging controller through each of the layout circuit conductive layers; the LED dot matrix display screen further comprises a runner shell which is arranged on the other side of the radiating base deviating from the LED illuminating units; a radiating through hole is formed in the central position of each four adjacent LED illuminating units; each of the LED illuminating units is adjacent to the radiating through hole; the radiating through hole passes through the radiating base and the runner shell; an outer runner side wall and an inner runner side wall which is arranged on the periphery of the radiating through hole are arranged between the runner shell and the radiating base; and a circulating cooling runner is formed by the runner shell, the outer runner side wall, the inner runner side wall and the radiating base. The LED dot matrix display screen has the advantage of excellent radiating effect.

An object of the present invention is to provide an organic electroluminescent device having high efficiency, low driving voltage, and a long lifetime by combining various materials which are excellent in hole and electron injection/transport performances, an electron blocking ability, stability as a thin film and durability for an organic electroluminescent device of high efficiency and high durability, in such a manner that the materials can effectively exhibit characteristics thereof. The organic electroluminescent device includes at least an anode, a hole transport layer, a light emittinglayer, an electron transport layer and a cathode in this order. The hole transport layer includes an arylamine compound of the following general formula (1).

The invention discloses an LED (light-emitting diode) dot matrix display screen which comprises a heat-dissipating substrate, LED light-emitting units, an imaging controller and a layout circuit conducting layer, wherein the LED light-emitting units are uniformly arrayed; each LED light-emitting unit is separately electrically connected with the imaging controller through the layout circuit conducting layer; the LED light-emitting units are fixed on the heat-dissipating substrate; the central position of every four adjacent LED light-emitting units is provided with a straight heat-dissipating through hole, each LED light-emitting unit is adjacent to the straight heat-dissipating through hole, and the straight heat-dissipating through hole passes through the heat-dissipating substrate; the LED dot matrix display screen also comprises a display-screen outline border, and the display-screen outline border is provided with an accommodating cavity (the bottom surface thereof is provided with an opening); and a position (facing to each LED light-emitting unit) on the front surface of the display-screen outline border is provided with a through hole for covering the LED light-emitting unit, the through hole is provided with a light-pervious seal plate, a position (close to the upside of the display-screen outline border) on the back face of the display-screen outline border is provided with heat-dissipating holes, and the back face of the display-screen outline border is also convexly provided with a rain cover for preventing rainwater from entering the accommodating cavity. The LED dot matrix display screen has the advantages of good heat dissipation and waterproof properties.

The invention provides a regenerative thermoplastic resin composition which has an excellent balance between rigidity and strike-proof despite exiting a mass of regenerative resin and has the same creep-resistant performance to unused polyolefin resin, and a molding body as the filling member of rainwater depositing and/or infiltration establishment. The regenerative thermoplastic resin composition is characterized in that a regenerative polyolefins resin composition contains 10 to 90 wt. % high molecular weight polyolefins resin which average molecular weight is no less than 500,000 and 90 to 10 wt. % regenerative polyolefins resin, based on 100 parts by weight of the regenerative polyolefins resin, a reactive resin component containing 1 to 30 parts low density polythene and/or organic peroxide, free radicals capture agent and methylether acrylate monomer.

The present disclosure relates to an organic electroluminescent compound and an organic electroluminescent device comprising the same. The organic electroluminescent compound according to the present disclosure is contained in an electron transport layer and/or an electron buffer layer, so that an organic electroluminescent device having improved light-emitting efficiency can be manufactured.

The present invention provides a toner, a toner cartridge, and an image forming apparatus excellent in low-temperature fixability, storage stability, and long life. A toner according to an embodiment includes toner particles containing a colorant, a binder resin, and an ester wax. The ester wax includes two or more ester compounds represented by the following general formula (I) and having different numbers of carbon atoms. The number of carbon atoms (C) of the ester compound as the maximum content in the ester wax _n1 ) is 40-44. Described ester wax satisfies specific formula (1) and formula (2): R ¹ COOR ² ···(I), R1 and R2 in the formula (I) are alkyl groups. The total carbon number of R1 and R2 is 31-53.

The invention provides an acridine derivative and an OLED with same and relates to the technical field of organic optoelectronic materials. In the invention, hole movement degree is increased by adjusting the R1, R2, R3, R4, Ar1 and Ar2 groups of the acridine derivative. The acridine derivative can be used in the OLED, especially as an object doping material of a luminescent layer in the OLED. Theacridine derivative is long in service life and high in efficiency and can effectively improve the photoelectric performance of the OLED and the service life of the OLED. The acridine derivative canbe used for flat panel display, planar illuminants, surface light emitting OLED illuminants for illumination, flexible illuminants, duplicators, printers, LCD backlights, or a light source, a displaypanel and an indicator in a dosing machine, etc.