89 results about "Core formation" patented technology

A wireline or drill pipe retrievable coring tool with an inner barrel to receive a core, a bottom coring tool valve operable to seal off a bottom of the inner barrel and at least one pressure canister operable to receive fluid from the core in the inner barrel. The pressure canister is operable to significantly reduce the pressure inside the inner barrel utilizing an expandable chamber to receive fluid from the core as the tool is removed from the wellbore. In one embodiment, a bottom valve mechanism moves the cored formation materials out of the way of the bottom valve before the bottom valve is closed.

Provided are a lightwave circuit and a method of manufacturing the same. The lightwave circuit includes a first substrate having an engraved core formation groove which is formed on an upper portion of the first substrate, a core layer which is formed inside the engraved core formation groove, a BPSG bonding layer which is formed on the first substrate including the core layer, and a second substrate which is formed on the BPSG bonding layer. Accordingly, light loss and branching uniformity of the lightwave circuit are effectively improved, and the lightwave circuit is manufactured simply and inexpensively while also further improving light loss and branching uniformity of the lightwave circuit.

The invention discloses solar glass antireflection antifouling paint with high antireflection performance and high weather resistance and a production method of the solar glass antireflection antifouling paint. The solar glass antireflection antifouling paint is prepared from alkaline silica gel, poly SiO2, aluminium dihydrogen phosphate, silicon phosphate, phosphoric acid, a surfactant and deionized water. The production method comprises the following steps: a porous silicon dioxide core generated in ethyl silicate hydrolysis is covered with another hard silicon dioxide shell, silicon dioxide particles in the paint have a core-shell structure, the silicon dioxide core formation and the silicon dioxide shell covering are carried out at the same time, aluminium dihydrogen phosphate and silicate phosphate are used as a silicon dioxide curing agent to enhance the weather resistance of an antireflection membrane. The problem that antireflection performance and the weather resisting performance of conventional solar glass self-cleaning antireflection paint can offset each other is solved, the power generating efficiency of a solar cell can be improved and stabilized greatly, and the maintenance management cost of the solar cell can be reduced.

An opto-electric hybrid board manufacturing method improves the alignment accuracy of an optical element with respect to a core of an optical waveguide. When a core (7) of an optical waveguide (W) is formed on a surface of an electric circuit board (E), the core (7) and optical element positioning alignment marks (A) are simultaneously formed from a photosensitive resin layer including a core formation region and an alignment mark formation region by a single photolithography process. In an optical element mounting step, a light emitting element (11) and a light receiving element (12) are mounted at proper positions with respect to the core (7) of the optical waveguide (W) with reference to the alignment marks (A).

The invention relates to a method for preparing nanometer nickel powder, especially for preparing spherical nanometer nickel powder with grain size being 30-100 nm and specific surface area being larger than 8 m2/g. The invention is characterized in that: dissolving nickel nitrate or nickel sulfate with deionized water, adding proper amount of surface activator to prepare nickel hydroxide slurry; fastening reaction on rapid heat transmission and even temperature fluid bed with reducer and accelerant to control core formation of nickel powder and crystal growth, preparing spherical nanometer nickel powder; desalting reacting liquid and returning it to reactor, moderating temperature and retention time; returning washing liquid to batching process. The invention controls size of nanometer nickel powder by controlling crystal growth time, and prepares spherical nanometer nickel powder with size being 30-100 nm and specific surface area being larger than 8 m2/g; the reacting liquid and washing liquid are reused in process, the wastewater discharge is reduced, and the production is lowered.

Several variations of core formation techniques and machines to produced cores are disclosed, including a large and small discrete core, formed on a screen and combined; a large and small continuous core, formed on a web; and two and three-dimensional cores, formed on a screen, and core formation on a non-woven web.

The invention discloses a water phase preparation method of nucleating doped nano-crystal of ZnS: Mn and ZnS: Mn or ZnS, deionized water is regarded as solvents, zinc salt is regarded as the source of zinc ion, manganese salt is regarded as the source of manganese ion, sodium sulfide is regarded as the source of sulfur ion, mercapto carboxylic acid is regarded as stabilizer, water bath or oil bath is used for controlling the reaction temperature, the whole reaction process is carried on in the air, the method has the advantages of the low cost, the simple operation, the whole process being carried on in the air, innocuity, and no pollution, the nano-crystal of ZnS: Mn and ZnS: Mn or ZnS has the high strength, the good light stability, and the good water solubility, the method of the invention can realize the mass production of the nano-crystal of ZnS: Mn and ZnS: Mn or ZnS.

The invention discloses a preparation method of a ternary cathode material. The method comprises the following steps of 1, uniformly mixing and integrating a salt ingredient and an alkali ingredient in a solution mode to form a mixture solution; 2, carrying out deposition on the mixture solution formed in the step 1 to form precursor grains, and controlling core formation and a crystal growth speed of co-precipitation reaction through parameter adjustment; 3, adding positive ions in a liquid phase to the precursor grains for doping modification after carrying out washing and filter pressing on the precursor grains formed in the step 2, and drying the precursor grains; and 4, adding lithium to the dried raw material, and carrying out calcination and surface coating modification to obtain a finished product of the ternary material. By the method, the product manufactured according to the method has technical effects of high tap density, high capacity and high cycle performance.

Disclosed is a novel metallic film preparation technology on liquid phase substrate surface, which comprises using liquid phase material whose saturated vapor tension is lower than the vacuum evaporation pressure as substrate, employing magnetron sputtering or thermal deposition method, evaporating the metal atoms with energy of argon ions in high speed movement or tungsten filament heated by electric current, then depositing the evaporated metal atoms onto liquid phase substrate surface, finally growing metallic film having polycrystalline grain structure through diffusion, core formation, rotation and agglomeration. The film has substantially no internal stress.

The invention provides a composite abrasive grain which is prepared by utilizing a simpler preparation process and adopting an in-situ core formation method, is uniformly coated and takes polymethacrylate as a core and cerium oxide as a shell. By virtue of the unique mechanical characteristics of soft inside, hard outside and non-rigidity of the core-shell organic/inorganic composite abrasive grain, the synergy between the elasticity of the organic microsphere inner core and the surface hardness and high chemical activity of the CeO2 shell layer is fully exerted as expected during a CMP (chemical-mechanical polishing) process, thus high-quality ultra-smooth polished surfaces are obtained.

The invention discloses a production method of acrylamide crystals, which pertains to the field of biochemical industry. The method mainly comprises the steps that: acrylamide aqueous solution with high concentration is treated with cooling crystallization in a jacket-stirring crystallization kettle, after the temperature is reduced to 20 to 30 DEG C, acrylamide fine crystals with the granularity of 0.08 to 0.80mm are added to be taken as seed crystals to induce the acrylamide crystals to carry out secondary core formation, the temperature is reduced to 3 to 6 DEG C and the crystals grow for 20 to120min, and then the acrylamide crystals are obtained after centrifugation and drying. The production method does not need additional new equipment, is not easy to form crystal scars in the crystallization process, and has high crystal granularity, good crystal quality and less energy consumption.

The first guide means are formed by the inner configuration of the engagement portion of the plug housing and the outer configuration of the engagement portion of the socket housing to be guided and inserted into said engagement portion of the plug housing. The second guide mechanism is formed by a guide post and a guide post hole. The third guide mechanism is formed by the inner configuration of the engagement portion of the receptacle housing, and the outer configuration of the first multi-core ferrule of the plug-side optical connector to be inserted into the engagement portion of the receptacle housing. The fourth guide mechanism is formed by the guide pin of the second multi-core ferrule and the guide pin hole of the first multi-core ferrule for receiving the guide pin. During the mating process of the receptacle-side optical connector and the plug-side optical connector, the above-mentioned first, second, third, and fourth guide mechanisms work in this order.

The invention relates to a processing method of blue stone underlay synthermal double-buffer layers, which comprises the following steps: firstly, putting a blue stone underlay into a reaction cavity for hydrogenating process and getting clean blue stone underlay, secondly, inputting reacting gas into the reaction cavity to create the reacting atmosphere and keeping the temperature and the pressure in a setting range in the cavity, thirdly, inputting beam source containing Ga into the reaction cavity in the first time segment for growing the first buffer layer, fourthly, bypassing the beam source containing Ga and keeping inputting reacting gas in the set time segment after finishing growing the first buffer layer, fifthly, keeping inputting the reacting gas and inputting the beam source containing Ga into the reaction cavity in the second time segment for growing the second buffer layer. In the twice core formation growth, the gap created between crystal nucleus is beneficial for releasing stress created by the mismatching of GaN and Al2O3 crystal lattices, and is beneficial for the transition of GaN three-dimensional growth to two-dimensional growth, thereby forming a plane surface, and improving crystallization quality of GaN.

A method of producing a semiconductor nanoparticle of the present invention includes a core formation step of heating a first solution including group 13 element-containing fatty acid salt, a group 13 element-containing halide, and alkali metal amide to obtain a nanoparticle core made of a group 13 element-containing nitride, and a shell formation step of heating a second solution including the nanoparticle core, group 13 element-containing fatty acid salt, and alkali metal amide to obtain a semiconductor nanoparticle having the nanoparticle core covered with a shell layer made of a group 13 element-containing nitride.

The invention discloses a kind of hard polyurethane foam and the preparation method. Said polyurethane foam comprises polyurethane raw material, which includes C-pentane foaming agent, combined polyether POL and MDI, the HFC-245fa is added into combined polyether, the adding amount is 0.5- 3% of total weight of raw material. The HFC-245fa is used as core formation agent. The invention is characterized in that it can distinctively and effectively reduce k value of PU foam, increases thermal insulation property and saves energy.

The invention relates to the technical field of environmental protection desulfurization, in particular relating to a method for improving quality of desulphurization gypsum in flue gas desulfurization process and a flue gas desulfurization system. A plurality of seriflux supersaturation detection devices and a plurality of stirring devices are evenly distributed on the periphery of the seriflux tank of the flue gas desulfurization system, the stirring device is driven by a stirring driving device which is controlled by a control device; the seriflux supersaturation detection devices detect the supersaturation of peripheral seriflux and output the detection results to the control device; the control device controls the stirring driving device to operate according to the seriflux supersaturation degree detected by the seriflux supersaturation detection devices; according to the seriflux supersaturation, corresponding stirring operation is carried out on seriflux, the supersaturation of each zone of seriflux in the seriflux tank is evenly kept within the metastable state of crystal grains, thereby reducing new core formation rate of gypsum, increasing crystallization growth driving power of existing tiny crystal grains, and improving the quality of gypsum.

A foil roll having a wound stiffener core formed from an initially flat sheet of stiffener material fed into a spiral roll winder simultaneously with a feed end of a foil web. An apparatus and method for spirally winding a foil roll with a wound stiffener core in which a stiffener sheet is fed into a roll winder in adjacent outward contact with a foil web and a leading edge of the stiffener slightly ahead of a feed end of a foil web. The stiffener sheet is outwardly disposed from the foil web and in adjacent contact with the roll starter guides to prevent contact between guides and the foil web during initial core formation. Roll starter guides are moved from contact with the outer periphery of the roll once the initial core is formed allowing a desired length of foil web to be spirally wound around the core without damage to the web. The apparatus is configured to receive a continuous supply of foil and stiffener web material, cut each to predetermined lengths, and sequentially form wound core foil rolls at an economically high rate.

The present invention enables magnetic domain control by the method of forming a magnetic coating layer of an Ni—Fe alloy comprised of Fe: 10 to 50 mass % and Ni: 90 to 50 mass % on the surface of grain-oriented electrical steel sheet having mainly {110}<001> orientation texture so that even if annealing after core formation, the iron loss improving effect will not be lost and the magnetic flux density will not be greatly reduced.

The invention discloses a preparation method of an Ag-Mn doped ZnSe and ZnS core-shell structure quantum dot. The preparation method comprises the following steps of adopting a mixed solution of zincacetate and silver acetate as a core formation precursor, adding high-activity sodium hydrogen selenide at the temperature of 80-100 DEG C to obtain an Ag-doped ZnSe nanocrystal core; and then adopting a mixed solution of zinc acetate and manganese acetate as a shell layer precursor, adding sodium sulfide at the temperature of 80-100 DEG C to obtain an Mn-doped ZnS shell layer. According to the preparation method provided by the invention, by adopting the zinc acetate, the silver acetate and the manganese acetate, the cost is low, and the reaction rate is easily controlled; only by adding a very small amount of an alkaline solution, a pH value can be regulated into a strong alkaline range; the nanocrystal core and the shell layer are prepared by adopting a one-pot method respectively, so that the operation step is simplified, and the preparation method is liable to popularization and large-scale production; the core and the shell adopting a ZnSe/ZnS quantum dot are doped with Ag+ and Mn2+ respectively, and an Ag:ZnSe/Mn:ZnS quantum dot is prepared; a single fluorescence peak, different double fluorescence peak combination or three fluorescence peaks are provided, so that white fluorescence can be modulated; the structure has a white light emitting ability, and a fluorescence material is provided to the field of white light LED.