44results about How to "Small composition" patented technology

A lubricant composition having improved non-Newtonian viscometrics includes at least 85 weight percent of a base oil and 1 to 15 weight percent of a lubricant additive. The additive itself includes 10 to 80 weight percent of a diluent oil and 30 to 80 weight percent of a random co-polymeric viscosity index improver. The viscosity index improver is the free-radical polymerization product of at least 5 to 15 weight percent methyl methacrylate and 5 to 95 weight percent of a C₈-C₁₀ alkyl (meth)acrylate. The additive is formed using a method that includes the step of providing the diluent oil, the methyl methacrylate, the C₈-C₁₀ alkyl (meth)acrylate, and a free-radical initiator. The method also includes the steps of flowing the diluent oil into a reactor, flowing the methyl methacrylate and the C₈-C₁₀ alkyl (meth)acrylate into the reactor independently from the free-radical initiator, and flowing the free-radical initiator into the reactor.

The invention discloses a cyclic azobenzene amphiphilic segmented copolymer and its preparation method. The preparation method is concretely characterized in that the cyclic azobenzene amphiphilic segmented copolymer with controllable molecular weight, molecular weight distribution and ratio of a hydrophilic segment to a hydrophobic segment is obtained by combining through controllable atom transfer radical polymerization (ATRP) and an efficient CuAAC reaction. Compared with linear polymers having a same molecular weight, the cyclic polymer disclosed in the invention has the advantages of high Tg, fast photo-isomerization, sensitive light and pH response performances in an alkaline medium, and wide application potential in medicine release, surfactants, coatings, adhesives and separation films.

The present invention provides a method for production of a copolymer for photoresists in which the bias of the monomer composition ration is small. This method for production is a method for production of a copolymer for photoresists, which copolymer containing at least two types of repeating units, the method having a supplying step of supplying a monomer solution and a solution containing a polymerization initiator into a polymerization reaction system, wherein the range of fluctuation of the monomer composition ratio of unreacted monomers is within the range between minus 15% and plus 15% or the standard deviation of the monomer composition ratio of unreacted monomers is within 2 in the polymerization reaction system during the period from the start of the polymerization reaction to the end of supplying of the monomer solution.

The invention discloses a device and a method for monitoring a distribution network. The device comprises a power distribution main station and a power distribution automation terminal in communication connection with the power distribution main station, wherein the power distribution automation terminal comprises a main control board, a remote metering board, a remote signaling board and a remote control board and is used for monitoring the state of ground power distribution lines and the state of underground manhole covers. The device further comprises front terminals, wherein the front terminals are arranged in one-to-one correspondence to all the manhole covers, provided with built-in small wireless modules, and used for sending manhole cover alarm information including corresponding manhole cover numbers when the manhole covers are illegally opened. According to the device and the method, the power distribution automation terminal not only has the function of power distribution line monitoring, but also is in communication connection with the front terminals, uploads the manhole cover alarm information to the power distribution main station, and controls the remote control board to command alarms to alarm, and thus, a concentrator in an original manhole cover monitoring system is replaced; and the dual monitoring on the ground power distribution lines and the underground manhole covers is achieved, the combination of ground power distribution line monitoring and underground manhole cover monitoring is optimized, the cost is reduced, and monitoring components are reduced.

A method for producing a ZnO single crystal by a liquid phase growth technique, comprising the steps of: mixing and melting ZnO as a solute and PbF₂ and PbO as solvents; and putting a seed crystal or substrate into direct contact with the obtained melted solution, thereby growing a ZnO single crystal on the seed crystal or substrate.

An electrical device in which an element composed of a conductive polymer composition is positioned in contact with the first surface of a metal electrode, the first surface having a center line average roughness R_a and a reflection density RD, the product R_a times RD being 0.5 to 1.6 μm. The conductive polymer composition preferably exhibits PTC behavior. In a second embodiment an electrical device has an element composed of a conductive polymer composition in contact with the first surface of a metal electrode produced by providing a base metal foil having an R_a of at most 0.45 μm and depositing material onto the base metal foil to form a first surface having a product of Ra times RD of at least 0.14 μm. Other embodiments include electrical devices with metal electrodes made by pulse plating processes, and metal electrodes made by electrodeposition under diffusion-limited conditions. The electrical devices may be circuit protection devices and have improved electrical and physical properties.

The invention relates to the field of parts of automobile sunroofs, and in particular relates to a transmission mechanism of an automobile sunroof, which is stable and reliable in operation. The transmission mechanism of the automobile sunroof comprises a lifting arm, wherein the front end of the lifting arm is movably connected with a front sliding block in a sliding groove, the top end of a drive arm is blocked in a curved groove arranged on the lifting arm, the lifting arm and the front sliding block are integrally formed, and the bottoms of the front sliding block and the drive arm are arranged in the sliding groove. According to the technical scheme, the parts constituting the transmission mechanism of the sunroof is reduced, accumulation errors caused in production and assembly processes of the relevant parts are avoided, and thus the transmission mechanism of the sunroof is more reliable and stable in operation.

The present invention relates to a structure of a propeller cap. In order to solve the problem of a conventional propeller boss cap fin (PBCF) which requires precision processing and thus is difficult to manufacture and has high manufacturing costs, the present invention provides a combined propeller cap configured by combining a diffusion type propeller cap with the tip end of an existing contraction type propeller cap so that hub vortex cavitation occurring in the rear of a propeller can be reduced. In addition, provided is a combined propeller cap having a guide fin for reducing rotating flow and hub vortex and enhancing propulsion efficiency, the combined propeller cap being configured so as to be capable of additionally reducing occurrence of hub vortex cavitation due to attachment of a plate shaped guide fin to a contraction type portion of such a propeller cap or between a contraction type portion and a diffusion type portion thereof.

A multilayer ceramic structure is formed by building up a plurality of layers by sequentially coating a substrate with a series of suspensions comprising particles in a fluid medium. A composition of the sequential layers are varied to produce a structure with the desired properties. The thickness of the layers can be controlled by Theological properties of the suspension and/or by the utilization of a gelling or coagulating agent. An advantage of this method is that complete drying between the subsequent coatings is not required.

The invention discloses a vibration-sensing corrugated diaphragm, and an optical fiber acceleration sensor and a micro-vibration detection system based on the vibration-sensing corrugated diaphragm. The vibration-sensing corrugated diaphragm comprises a composite film and a plurality of annular masses, the overall shape of the composite film is a disk structure with a uniform wall thickness, the lower surface of the composite film is provided with a plurality of grooves recessed upwardly, the plurality of grooves comprise a central groove and a plurality of annular grooves, the center groove and the annular grooves have the same depth, the central groove and the annular grooves are respectively arranged concentrically with the composite film, the central groove and the plurality of annulargrooves are provided with the plurality of annular masses in one-to-one correspondence, the outer wall of the annular mass is matched with the inner wall of the corresponding groove, the thickness ofthe annular mass is smaller than the depth of the corresponding groove, the upper end surface of the annular mass abuts against the top wall of the corresponding groove, and the lower end surface ofthe annular mass is higher than the lower surface of the composite film to form a corrugated shape of the diaphragm. The vibration-sensing corrugated diaphragm has the advantages of improving the sensitivity of the micro-vibration detection and realizing the miniaturization of the optical fiber acceleration sensor.

The invention provides an earth leakage breaker and an earth leakage unlocking device which can protect the components contained in the shell from influence by the voltaic arc gar, and can simultaneously achieves the space saving and the improved structure in the assembling and improving way. The functional components of the earth leakage detecting circuit (4), the braking coil (6), and the sensitive current switch (7). The action time switch (8), the earth leakage testing switch (9) and the earth leakage displaying button (13) are contained in the cell shell made from the modeling-pressing resin, which are carried in the earth leakage unlocking device of the main body shell of the earth leakage breaker; the cell shell is composed of a two-layer shell composing a lower shell (19), an tray-shaped upper shell (20) overlapped at the lower shell, and a shell cover (21) for covering the upper shell; the lower shell is contained in the braking coil and the earth leakage displaying button; the upper shell is contained with a circuit substrate (22) arranged with the earth leakage detecting circuit, the sensitive current switch, the action time switch, the earth leakage testing switch; base on this, sensitive current switch, the action time switch, the operating potions (7a), (8a), (9a) of the earth leakage testing switch of the circuit substrate traverses the shell cover to protrude outwards.

A ferromagnetic-particle manufacturing apparatus includes: a single mode cavity that resonates with a microwave of a predetermined wavelength; a microwave oscillator electrically connected to the single mode cavity and configured to introduce the microwave of a predetermined wavelength into the single mode cavity; a pipe disposed to pass through an inside of the single mode cavity, the pipe being formed of a dielectric material; a pump configured to introduce, from one end of the pipe, an alkaline reaction liquid containing metal ions of a ferromagnetic metal; an impedance measuring device configured to measure an impedance of the single mode cavity; and a pump-flowrate deciding unit configured to decide, based on a measurement result of the impedance measuring device, a pump flowrate by which the impedance of the single mode cavity becomes a predetermined value or more; wherein the pump is configured to introduce the reaction liquid at the pump flowrate decided by the pump-flowrate deciding unit; and wherein ferromagnetic particles are generated by reacting the reaction liquid.

The invention relates to a plasma display assemble which comprises: a plasma display comprising a scanning electrode wire and a holding electrode wire, a holding plate providing Y holding impulse to the scanning electrode wire and the Z holding impulse to the holding electrode wire, a channel printing circuit plate which is formed by connecting the sensor with the holding plate and the holding electrode wire.

The invention discloses a rubidium clock scanning and capturing auxiliary locking method which utilizes an existing rubidium clock locking telemetering module and an existing DDS frequency synthetic circuit for judgment. When a rubidium clock is not locked, the DDS frequency synthetic circuit adjusts an output FSK signal frequency according to a certain cycle, frequency stepping and a frequency range. A microwave frequency can change along with the change of the FSK signal according to the correlation of the microwave frequency and the FSK signal frequency. When the microwave frequency enters into a pull-in range of a rubidium clock frequency locking loop, the rubidium clock can be in a locking state, and therefore the scanning and capturing auxiliary locking function is achieved. According to the rubidium clock scanning and capturing auxiliary locking method, hardware composition is reduced. For example, a low frequency oscillator is removed. In addition, any interfering noise does not exist, and meanwhile, the method has the advantage of being easy to debug.