101results about How to "Avoid unstable performance" patented technology

The method is used for solving the issues that are the large instant communication system is unstable and the access of client side is unreliable. It comprises: getting the access information of each access server in the instant communication system; according to the access information, the domain name server (DNS) in the instant communication system provides the information about available access server to the client side; according to the information about available access server, the client side selects an access server to access the instant communication system.

The invention discloses a light mixing cured coating composition which comprises epoxy acrylic acid monoester, ultraviolet light-heat mixing curing agent or ultraviolet light free radical-cation mixing curing agent, pigmented filler, reactive diluent, dispersing agent, defoaming agent and flatting agent. The invention also discloses a preparation method of the light mixing cured coating composition. The coating composition of the invention has small cure shrinkage and high bonding strength, can be applied to dark systems, can be used for coating some components with complicated structures, and can be used for coating surfaces of wood products, plastics, metals and the like by the construction methods of brush coating, spray coating, curtain coating, roller coating and the like.

The invention provides an address mapping method based on large-capacity solid storage. The method is characterized by including the steps of obtaining a writing command for writing data in a solid hard disk, wherein the writing command carries data to be written and logic block addresses of the data to be written; inquiring about a third-stage mapping table, corresponding to the logic block addresses, in a main memorizer according to a global second-stage mapping table; if the third-stage logic list corresponding to the logic block addresses does not exist in the main memorizer, indexing the third-stage mapping table in the solid hard disk according to the global second-stage mapping table, reading out the third-stage mapping table, corresponding to the logic block addresses, in the solid hard disk and storing the third-stage mapping table into the main memorizer; controlling a solid hard disk controller to allocate physical page numbers for the logic block addresses, storing the physical page numbers in the third-stage mapping table, corresponding to the logic block addresses, in the main memorizer, and writing the data to be written in the physical page numbers.

The present invention relates to a display substrate and a manufacturing method thereof, and a display apparatus. The display substrate comprises: a thin film transistor which is provided with an active layer therein; and a light shield layer which is arranged over the active layer and is used for shielding lights irradiating towards the active layer. According to the technical scheme of the present invention, the light shield layer is arranged over the active layer, so that external lights can be effectively prevented from irradiating to the active layer in the thin film transistor, thereby avoiding unstable performance of the thin film transistor caused by influence on the active layer from the outside illumination.

The invention relates to a method for automatically extracting a hair area in a photo by using a full face photo of the human face and a computer and converting the hair area into a cartoon style drawing effect. The automatic hair drawing method can be used as a constituent part of a cartoonlization technology based on a human face image. The automatic hair drawing method comprises the following steps of: (1) segmenting the hair area; (2) describing hair characteristics; and (3) matching and drawing a hair template.

The invention relates to a method for producing high-strength finishing rolling threaded steel bar by an online hardening and tempering technology. The used technical proposal comprises the steps that: a steel blank is heated to 1150-1200 DEG C, the blank is rolled to the shape of the required finishing rolling threaded steel bar, the temperature of final rolling is controlled in a range from 880 to 1050 DEG C, rolling exit velocity is controlled in 20-30 meter/minute, the steel bar enters into a cooling device in 5 seconds from the exit of a rolling machine so as to be quenched and then be cooled at 200-400 DEG C/second, the steel bar has the surface temperature of 50-80 DEG C after getting out of the cooling device, the quenched steel bar is conveyed to an annealing line via a transferring roller channel and a shifting platform for the annealing, the steel bar passes through an induction heater at the speed of 10-15 meter/minute, the annealing temperature is controlled in a range from 520-680 DEG C, and then blanking and cutting are implemented. In the invention, direct quenching is carried out after hot rolling, so that the steel bar can be completely quenched into a martensitic structure and is then directly annealed online to remarkably lower the production cost and dramatically improve toughness index of the steel bar.

The invention discloses a preparation method of graphene for a super capacitor electrode material. The preparation method comprises the steps of adding concentrated sulfuric acid to crystalline graphite powder serving as a raw material, adding a strong oxidant and sodium nitrate at a temperature within the range of 0-10 DEG C, respectively, and stirring for 2-3 hours, next, slowly adding water, adding 1-2 hours and controlling the temperature within the range of 80-95 DEG C, centrifuging, washing with water and drying to obtain graphene oxide powder, adding the graphene oxide powder to a reducing agent solution controlling the temperature within the range of 75-85 DEG C, performing ultrasonic dispersion processing for 3-4 hours, and then cooling, settling, filtering by suction, washing and drying in vacuum to obtain the graphene. The graphene obtained by use of the preparation method has superior properties in application to a super capacitor; at the current density of 2A/G, the specific capacitance of the material reaches 141F/g, after 300 cycles at different current densities, the specific capacitance is still kept at 130F/g(2A/g); as a result, the material shows excellent rate and cyclic temperature properties.

The invention provides a spraying polyurea elastic anticorrosive paint, and a preparation method thereof. The spraying polyurea elastic anticorrosive paint comprises, by weight, a component A and a component B; the component A comprises 30 to 40 parts of polyether polyol N220, 10 to 20 part of polyether polyol N330, and 30 to 60 part of isocyanate MDI-50; the component B comprises 40 to 60 parts of amine-terminated polyether D-2000, 5 to 10 parts of amine-terminated polyether T-5000, 10 to 20 parts of amino chain extender E-100, and 20 to 30 parts of amino chain extender 6200. The spraying polyurea elastic anticorrosive paint possesses high frequency impact resistance, no shedding or cracking is caused after 2 million times of impacting; the bonding strength is 10Mpa or higher; 3000h saltspray resistance test is passes; the physical strength is high (>=19Mpa), the physical elongation percentage is high (>=450%), the impact resistance is excellent, and the other physical mechanical properties are capable of satisfying requirements in spraying polyureas protection material standard.

The invention discloses a preparation method for modified palladium-carbon catalyst for Suzuki coupling reaction. The catalyst is composed of active carbon, and palladium and nickel loaded on the active carbon, wherein the mass percent of the palladium is 5-10%, and the mass percent of the nickel is 0.5-3%. The preparation method for the modified palladium-carbon catalyst for the Suzuki coupling reaction includes steps that 1, preparing nano-nickel sol; 2, preparing active carbon carrier; 3, preparing nickel-containing size; 4, preparing palladium-containing solution; 5, adding the palladium-containing solution to the nickel-containing size, preserving the heat, dipping and filtering to obtain a piece of filter cake; 6, performing reduction treatment, and washing to obtain the modified palladium-carbon catalyst. The modified palladium-carbon catalyst prepared by the method can be used for the Suzuki coupling reaction, and the modified palladium-carbon catalyst has advantages of high reaction activity, high selectivity, good stability and the like; the catalyst is easy to be separated from the product, the catalyst preparation technique is simple, the catalyst can be used repeatedly, the precious metal-palladium is easy to recycle, the pollution and energy consumption are reduced, and the economical benefit and environment significance are important.

The invention discloses a superhydrophobic coating layer with an adjustable particle concentration, and a preparation method thereof. The superhydrophobic coating layer is composed of a component A and a component B according to a mass ratio of 75:1; the component A is composed of silicone resin, an organic solvent, silicon oxide, a dispersant, an antifoaming agent and a leveling agent, and the component B is a silicone resin curing agent. The preparation method comprises the following steps: (1) preparing a mixed solvent; (2) pre-dispersing particles; (3) dispersing a film forming matter; (4)preparing a superhydrophobic coating; (5) weighing a curing agent according to the mass ratio of the component A to the component B of 75:1, and performing stirring until uniformity; and (6) preparing the superhydrophobic coating layer. The superhydrophobic coating layer is constructed by using the unmodified particles, and the superhydrophobic effect of the coating layer can be realized within avery wide particle additive amount range without influencing the film-forming property of the coating layer.

The invention discloses a production process of 300sec viscosity nitrocotton. The process comprises the steps of: first, refined cotton heating: in certain environment, heating refined cotton for a certain period of time; second, refined cotton nitrification: using certain acid to conduct nitrification for certain period of time; third, nitrocotton acid removal: removing acid from the nitrified refined cotton by specific instrument; fourth, nitrocotton boiling washing: subjecting the acid removed nitrocotton to boiling washing through a specific solution; and fifth, nitrocotton dehydration: dehydrating the boiling washed nitrocotton and preliminarily controlling the water content of the nitrocotton. The method provided by the invention can obviously improve the stability, avoids the problem of unstable performance of 2000300sec viscosity nitrocotton, can endure a short period of time of local high temperature, avoids the acid liquid boiling phenomenon caused by local high temperature, and avoids the release of nitrogen dioxide, cannot cause bursting of a nitrocotton holding container, eliminates unnecessary risks, and avoids waste and loss.

The invention discloses a method for preparing a pyrolytic boron nitride material. The method comprises the following steps: putting a substrate mold in an air-carrying atmosphere carrying borazine vapor under a vacuum condition, and pyrolyzing borazine which constantly deposits on the depositing surface of the substrate mold by adopting a chemical vapor deposition method to form the pyrolytic boron nitride material. The preparation method of the pyrolytic boron nitride material has the advantages of simple and easily controlled process, low cost, low energy consumption, high yield, environmental friendliness and the like.

The invention discloses a photovoltaic junction box with a heat dissipation structure, and the junction box comprises a photovoltaic junction box body. The top of the photovoltaic junction box body isprovided with a cover plate, and a contact part of the photovoltaic junction box body with the cover plate is provided with a first sealing strip. The bottom of the photovoltaic junction box body isprovided with a bottom plate, and the inner wall of the photovoltaic junction box body is provided with a cooling water layer. The left side wall of the photovoltaic junction box body is provided witha water incoming pipe which is communicated with the cooling water layer. The right side wall of the photovoltaic junction box body is provided with a water outgoing pipe communicated with the cooling water layer. The left and right side walls of the interior of the photovoltaic junction box body are respectively provided with a thermal conduction piece, and the thermal conduction pieces are arranged uniformly. The left and right sides of the bottom of the photovoltaic junction box body are symmetrically provided with positioning frames. The junction box changes the structure of a conventional photovoltaic junction box, achieves the cooling of the photovoltaic junction box body through a circulating water cooling method, is high in cooling efficiency, and prevents the overtemperature of the junction box from causing the instable performances.

The invention provides a method for managing a storage medium. The method comprises: step one, logical addresses are managed in subareas; and the corresponding relation between at least one region logical address and at least one physical address is established; step two, the corresponding relation between at least one region logical address and at least one physical address is loaded in a memory; and step three, according to the corresponding relation between at least one region logical address and at least one physical address, an accessing command is executed. In the method, the logical address of the storage medium is divided into a plurality of regions; each region respectively organizes a contrast table, thereby realizing the completion of managing the large-capacitance storage medium through occupying less memory; the method also utilizes an exchange block to realize mutual exchange of physical blocks among the regions, thereby solving the problem of unbalanced abrasion among the regions and simultaneously avoiding the problem of unstable performance caused by the transferring of data of the whole region; and the method is safe, stable and easy to realize.

The invention discloses a hot forging and molding process for oxygen free copper materials. The hot forging and molding process is different from the traditional cold extrusion process in prior art. According to this process, a hot forging method is adopted to process the oxygen free copper materials and process parameters including a preheating temperature of moulds, a heating temperature of materials, and a lubrication oil component are ensured. The hot forging and molding process can be used to prepare precise oxygen free copper components which are smooth on surface, good in performance, and qualified in combustion. The process steps are simple to operate and applicable to industrialization promotion, the finished product rate is high, and all the parameters of products are excellent.

The invention discloses an all-solid-state quantum dot sensitized solar cell which comprises conductive glass and a copper substrate. The conductive glass is opposite to the copper substrate, the space between the conductive glass and the copper substrate is filled with solid electrolyte, a photo-anode is arranged on the conductive glass and positioned on one side of the solid electrolyte, a copper-based Cu2S nano-sheet counter electrode is arranged on the copper substrate and positioned on the other side of the solid electrolyte, and the photo-anode is a CdS/CdSe quantum dot sensitized ZnO nanowire array photo-anode. By synthesizing and heating the solid electrolyte with good conductivity, the microstructure gap between the ZnO nanowire array photo-anode and the copper-based Cu2S nano-sheet counter electrode is sufficiently filled with the solid electrolyte, the problems of unstable performance of a liquid quantum dot sensitized solar cell and electrolyte omission in the package process are solved, and the all-solid-state quantum dot sensitized solar cell is simple in preparation process, low in cost, good in large-area preparation repeatability and excellent in use value.