5results about How to "Not easy to adsorb" patented technology

This application relates to the field of silicone rubber, and more specifically, to a high-performance weather-resistant and anti-fouling silicone rubber for encapsulation / bonding of electronic components and its preparation method. It comprises the following raw materials in weight percentages: 50-65% base compound; 20-30% insulating filler; 5-8% A synergist; 2-5% B synergist; the balance being processing aids; A synergist is a hydrogen-containing silicone resin; B synergist is composed of cage-type polysilsesquioxane containing activating groups, tetravinyltetramethylcyclotetrasilazane, and silicone wax in a weight ratio of 1:(0.5-1):(1-3); and the compound system of synergist and B synergist can bond with the silicone rubber obtained from the base compound and insulating filler to form a dense and stable three-dimensional cross-linked network after curing. This not only possesses superior physical properties but also excellent bonding strength, low shrinkage, weather resistance, and anti-fouling properties, improving the structural stability and long-term reliability of electronic components.

A method for preparing a binary formula for Dai pottery clay and its application is disclosed. The method involves taking Dai pottery clay from the Honghe River basin, five-colored clay from Honghe County, and charcoal powder. The Dai pottery clay and five-colored clay are sun-dried and weathered for at least three months. The Dai pottery clay from the Honghe River basin has a SiO2 content of not less than 50%, an Al2O3 content of not less than 15%, an Fe2O3 content of not less than 10%, and a loss on ignition of less than 10%. The five-colored clay from Honghe County has a SiO2 content of 72-82%, an Al2O3 content of 9-12%, and an Fe2O3 content of 3-5%. The method involves soaking the Dai pottery clay and five-colored clay in water until fully saturated, then ball-milling them. The slurry is sieved, and then charcoal powder is added. After stirring evenly, the clay is pressed to drain water and then kneaded to remove air. This invention can improve the throwing and molding performance of Dai pottery clay, increase the sintering temperature and the density and strength of its structure, and reduce the burn-off rate.

This invention relates to the field of powder material surface modification, and discloses a method and system for detecting the plating failure rate of nickel-coated diamond powder. The method includes the following steps: sample dispersion: placing the nickel-coated diamond powder sample to be tested in a dispersion medium to form a suspension; magnetic separation: placing the dispersed suspension in a magnetic field for magnetic separation, causing magnetic particles to be adsorbed; obtaining the test liquid: extracting the supernatant of the suspension as the test liquid while maintaining the magnetic field; suspended particle analysis: introducing the test liquid into a particle analysis system to count and analyze the characteristics of the non-magnetic particles contained therein; result determination: evaluating the plating failure rate of the original nickel-coated diamond powder sample based on the particle parameters output by the particle analysis system. This invention can complete the detection of a sample in a short time and output the absolute concentration of plating failure particles, achieving quantitative assessment; it can detect trace or localized plating failure particles that are difficult to identify by XRD methods.

This invention relates to the field of catalyst technology, providing a supported ruthenium-based catalyst, its preparation method, and its application. The supported ruthenium-based catalyst provided by this invention comprises a support and an active metal Ru; the active metal Ru is dispersed on the surface of the support in the form of elemental atom clusters and Ru oxide clusters; the elemental Ru atom clusters are dispersed around the Ru oxide clusters; the support is an oxygen-containing support. The supported ruthenium-based catalyst provided by this invention exhibits high hydrogenation selectivity and activity. When applied to the selective hydrogenation reduction reaction of 2,4-dinitroaniline, it can effectively improve the conversion rate of the reactants and the selectivity of the target product, 4-nitro-o-phenylenediamine. The preparation method provided by this invention is simple, easy to operate, and suitable for large-scale production.

The utility model discloses a double screw extruding granulator, including the feed hopper of the granulator body top, the top of feed hopper is provided with the support bucket and the filter plate, the outside wall of support bucket is connected with the inside wall of feed hopper and slides, the bottom vertical of support bucket is provided with the support groove, the sidewall of support groove is connected with the sidewall of filter plate, be provided with lifting mechanism on support bucket, the utility model discloses simple structure, reasonable in design, through the support bucket of feed hopper top, filter plate and lifting mechanism, when raw materials are transmitted to feed hopper, filter raw materials, make raw materials hard impurity or not melt granule etc. Dirt transmission to filter plate, reduce the damage that dirt causes to the granulator body, prolong the service life of granulator body.