30results about How to "Good adhesion resistance" patented technology

The present invention relates to a method for preparing catalyst used for preparing chloride by oxidizing hydrogen chloride. The method is mixing a slurry mainly containing boron and chromium with a slurry mainly containing copper, boron, alkali-metal elements, rare-earth elements, aluminum sol, silica sol, carrier and optionally other metal elements, the mixing temperature being not more than 100℃, and the residence time being not more than 120 minutes, the mixed slurry is successively treated with spray drying, high temperature calcination and the like, so that catalyst particles is obtained. The present invention also relates to the catalyst prepared through the method, uses of the catalyst used in the process of preparing chloride by oxidizing hydrogen chloride and a method for preparing chlorine by using the catalyst. The catalyst is used for preparing chlorine by oxidizing hydrogen chloride with oxygen or air in fluidized bed reactor, and has an excellent activity and anti-caking property, a relatively good mechanical strength and a relatively long service life.

Provided is a resin composition for sealing semiconductors which includes an epoxy resin (A), a curing agent (B) and an inorganic filler (C). Therein, the epoxy resin (A) includes an epoxy resin (A-1) represented by formula (1), and the epoxy resin (A-1) includes a component represented by formula (1) wherein n>=1 and a component (a1) represented by formula (1) wherein n=0. (In formula (1), R1 represents a hydrocarbon group with 1-6 carbon atoms, R2 represents a hydrocarbon group with 1-6 carbon atoms or an aromatic hydrocarbon group with 6-14 carbon atoms and can be the same as R1 or different from R1, a is an integer in the range of 0-4, b is an integer in the range of 0-4 and n is an integer not less than zero).

Disclosed is a hydrogenated copolymer obtained by hydrogenating an unhydrogenated copolymer comprising conjugated diene monomer units and vinyl aromatic monomer units, the unhydrogenated copolymer having at least one polymer block (H) of vinyl aromatic monomer units, wherein the hydrogenated copolymer has the following characteristics: (1) a content of the vinyl aromatic monomer units of from more than 60% by weight to less than 90% by weight, based on the weight of the hydrogenated copolymer; (2) a content of the polymer block (H) of from 1 to 40% by weight, based on the weight of the unhydrogenated copolymer; (3) a weight average molecular weight of from more than 100,000 to 1,000,000; (4) a hydrogenation ratio of 85% or more, as measured with respect to the double bonds in the conjugated diene monomer units; and (5) substantially no crystallization peak observed at -50 to 100 DEG C. in a differential scanning calorimetry (DSC) chart obtained with respect to the hydrogenated copolymer.

The invention relates to a superhard material cutting tool and a preparation method thereof, which belongs to the technical field of superhard material. The superhard material cutting tool comprises a steel matrix and a cutting tool bit. The cutting tool bit consists of a polycrystalline diamond compact (1) and a diamond tool bit (2); 1 to 12 inclined cylindrical tanks used for welding the diamond compact are distributed on the outer circle surface of the steel matrix, and the center line of the inclined cylindrical tank forms a cutting angle with the cutting face; the diamond tool bit is welded on the surface of the steel matrix. The polycrystalline diamond compact is combined by PCD and cemented carbide matrix and is sintered from the mixture of diamond and the metal powder after being compacted; the structure thereof is in the shape of cylinder, ladder or squareness; the fringe area of the clad compact is the cutting blade. The superhard material cutting tool solves the materials hard to be processed in the cutting field, and ensures the surface of the machined part free of burr, nick, spray and chatter mark; the cutting and grinding combination not only improves the cutting speed, but also ensures the cutting quality.

The invention belongs to the technical field of building materials and particularly relates to a mold assembly for manufacturing a concrete narrow-gap slatted floor and application of the mold assembly. The mold assembly comprises a mold and an isolating layer, wherein the mold comprises a base plate and a frame; the frame is formed by assembling four square side plates which are vertically arranged at the periphery of the base plate; a plurality of molding plates are vertically arranged on the base plate; and the isolating layer is attached to the base plate and the side plates. According to the mold assembly disclosed by the invention, the concrete narrow-gap slatted floor is produced by adopting the following method: firstly, uniformly spreading one thin layer of fine sands on the isolating layer, pouring a layer of concrete into the mold assembly and then starting a vibrating table for vibrating; secondly, putting the reinforcing mesh into the mold assembly, and continuously pouring concrete into the mold; when the concrete spills over the reinforcing mesh and is stacked to the top of the mold, plattening the top of the concrete and putting two reinforcing bars into the mold assembly; thirdly, uniformly spreading one layer of carborundum on the surface of the plattened concrete, and immediately turning over and demolding after plattening and forming, thus obtaining a finished product. According to the concrete narrow-gap slatted floor manufactured by adoption of the mold assembly, the pitted surface of the narrow-gap slatted floor surface can be effectively reduced, and surface quality of the floor is improved.

The invention discloses an anti-adhesive and high-temperature-resistant setter and a preparation method thereof. The slurry is evenly sprayed on the surface of a substrate and sintered to form a coating; wherein, the slurry is composed of yttrium oxide, zirconium oxide, oxide It is obtained by uniformly mixing tungsten and binder; the matrix is ​​obtained by processing zirconia into a honeycomb structure. In the invention, the coating is processed on the surface of the honeycomb matrix, so that the setter has better performances of anti-bonding and high temperature resistance. The setter can be used for sintering easily sintered powders and materials with high chemical activity and easy reaction with crucible materials, and has good promotion and application value in the fields of battery materials, ceramic capacitor firing, high-temperature sintering and other fields.

The invention discloses a plasma texturing cutter and a preparing method thereof. The method comprises the steps that firstly, a mask plate is prepared, a chromium nitride layer is sputtered and deposited on the surface of a glass substrate through a sputtering method, a chromium film layer is sputtered on the surface of the chromium nitride layer, a chromium sesquioxide layer is sputtered on the surface of the chromium film layer, and then a nanoscale texture array is machined on the chromium film layer through the electron beam lithography; secondly, pre-treatment of the cutter is carried out; thirdly, photoetching pattern transferring is carried out, a cutter-cuttings contact area of a front cutter face of the cutter is evenly coated with photoresist, exposure is carried out on the photoresist, the photoresist is dissolved through a developing solution, and a nanoscale texture array pattern is formed on the photoresist; and fourthly, plasma etching is carried out, and by means of plasma etching, the nanoscale texture array is formed on the cutter in an etching manner. The cutter-cuttings contact length in the cutting process is reduced through the nanoscale texture array, accordingly, the cutting force and the cutting temperature are reduced, and bonding of cuttings is reduced; and the anti-bonding performance of the cutter is improved, and the service life of the cutter is prolonged.

The invention provides an aluminum tube continuous extrusion die, which comprises a punch, a die and a forming mandrel arranged on the punch, and the die includes a die base with an inverted frustum-shaped die forming cavity inside. , a forming gasket arranged on the inner side of the bottom of the die matrix and a die forming through hole passing through the bottom of the die and the forming gasket, the forming mandrel and the forming gasket both include cemented carbide The substrate and the nano-titanium nitride layer, nano-titanium carbide layer or nano-titanium carbonitride layer deposited on the hard alloy substrate, the hard alloy is titanium carbide niobium molybdenum alloy, titanium nitride niobium molybdenum alloy or tungsten Titanium alloys. The surface roughness Ra value of the cemented carbide substrate is 0.01-0.1. The aluminum tube continuous extrusion die has higher red hardness, higher surface gloss and better high temperature corrosion resistance, so that the die has a longer service life.