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292results about How to "Avoid heavy use" patented technology

Method for preparing organosilicon modified acrylic ester binding agent

The invention relates to a method for preparing a silicone-modified acrylate adhesive, which comprises the following: (1) a step of the pre-polymerization of a modified monomer, in which the modified monomer, a modified monomer catalyst, an emulsifying agent and deionized water are pre-polymerized to obtain a silicone pre-polymerization emulsion; (2) a step of emulsification, in which the silicone pre-polymerization emulsion and a basic monomer are emulsified to obtain an intermediate pre-emulsion; and (3) a step of the polymerization of acrylic ester, in which the intermediate pre-emulsion is polymerized with a basic monomer catalyst and the deionized water to obtain a finished product. The method adopts a fractional step method to emulsify according to the hydrophilicity of various monomers. During the emulsification step by step, a polymeric monomer with stronger hydrophobicity which is added first can be effectively and steadily dispersed under the condition of relatively higher concentration of the emulsifying agent, which strengths the stability of a monomer pre-emulsion. The grain diameter of the prepared adhesive emulsion is smaller and has narrower distribution, the emulsion system is also more stable, and various application performances are superior to those of adhesive products prepared by the prior method.
Owner:WUHAN TEXTILE UNIV

Metal support half-cell of solid oxide fuel cell and preparation method thereof

The invention discloses a metal support half-cell of a solid oxide fuel cell and a preparation method thereof. The half-cell comprises a porous metal supporting layer thick membrane, a porous cermet gradient transition layer film, a porous anode layer and a compact electrolyte layer film from down to up. The porous gradient transition layer composed of a mixed oxide and a oxide with a fluorite structuring can avoid the direct contact of the porous metal supporting layer and the porous anode layer, and the mutual diffusion of Fe/Cr elements in the metal supporting layer and Ni element in the porous anode layer can be reduced under high temperature sintering condition. The mixed oxide is reduced to an alloy under the work condition of the cell; a high anode active material is formed at a side interface of the anode, a high conductivity composite material which takes the alloy as a main phase is formed on the side interface of a metal support body, so that higher conductivity is presented, ohmic resistance is reduced, electrocatalytic activity is not reduced, long-term stability for operation of the cell can be ensured, and good combination of the porous metal supporting layer and the porous anode layer can be simultaneously realized.
Owner:中弗(无锡)新能源有限公司

Green carbon dioxide supercritical fluid semiconductor cleaning equipment

The invention discloses green carbon dioxide supercritical fluid semiconductor cleaning equipment which is used for cleaning semiconductor silicon wafers without water. The equipment comprises a main working chamber for carrying out supercritical fluid cleaning and supercritical drying, a separating chamber for separating carbon dioxide and cleaning waste liquid, a temporary storing tank for storing a cleaning agent for enhancing the cleaning effect and a cosolvent, a carbon dioxide circulation control system for compressing, cooling and storing the carbon dioxide, and the like. all parts are connected by a pipeline with a valve. Under the cooperation of a small amount of organic solvent, the carbon dioxide without surface tension is taken as a cleaning medium and a rinsing solution to go deep into tiny holes to obtain good cleaning and drying effects. By utilizing the equipment, massive consumption of pure water and the pollution brought by chemical agents are avoided, and the problems of structure deformation, particle adsorption and the like caused by the surface tension in the traditional process are solved, and the cycle use of the carbon dioxide reduces the massive discharge of greenhouse gases.
Owner:INST OF MICROELECTRONICS CHINESE ACAD OF SCI

Ruthenium-modified Ir/C catalyst and preparation method thereof, as well as application to citral hydrogenization

The invention discloses preparation of a ruthenium-modified Ir/C catalyst and application of the ruthenium-modified Ir/C catalyst to citral hydrogenization. The catalyst comprises an active carbon carrier, and an active component comprises Ir nano particles and Ru nano particles, wherein the carrying capacity of the Ir nano particles is 1.0 to 5.0 percent, and the carrying capacity of the Ru nano particles is 0 to 4.0 percent. The invention further discloses a preparation method of the ruthenium-modified Ir/C catalyst. The preparation method comprises the following steps: firstly, treating active carbon through nitric acid, then carrying the active component including iridium and auxiliary ruthenium to obtain a catalyst precursor, and carrying out drying and reducing. As Ru replaces part of Ir, the catalyst disclosed by the invention is lower in cost, and also has higher catalysis activity and selectivity; furthermore, the catalyst can be used indiscriminately for multiple times, so that the production cost is reduced. When the catalyst is applied to citral hydrogenization to synthesize nerol, the raw material conversion rate is 100 percent, and the nerol/geraniol selectivity is up to 98.0 percent; the reaction process is mild in condition, and can completely meet the industrial production requirement.
Owner:JIANGXI HANS PRECIOUS METALS CO LTD +1

Navigation apparatus for searching interest point and method for searching interest point

The invention relates to a navigation device capable of searching interest points and a method for searching interest points. The Chinese characters related to name data of all interest points in an interest point name database are arranged in a certain sequence, and an index item consisting of index records is set for each different Chinese character, wherein each index record of the index item corresponds to one interest point name data including the specific Chinese character, and all of the index items constitute the interest point index database of the navigation device. Each index record includes a name code corresponding to the interest point name data and a position code of the position of the specific Chinese character in the interest point name data. When the navigation device is used for searching the interest points, the records of each index item corresponding to the inputted character sequence are compared one by one to obtain a group of index records satisfying the requirement, and interest points are displayed after extracting the interest point name data according to the group of index records. The navigation device has the advantage of reliable, simple and rapid searching.
Owner:江苏华科导航科技有限公司
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