36results about How to "Fast impregnation" patented technology

The present invention relates to active charcoals with improved mechanical properties. They can advantageously be used in the sweetening of petroleum fractions, as oxidation catalyst support in the conversion of mercaptans to disulphides, but also in any other type of reaction, such as, for example, for the oxidation of cyanide present in water or in the synthesis of glyphosate, and in processes for purification and/or separation by selective adsorption in a liquid phase and/or in a gas phase (decolouration of liquid foodstuffs, water treatment, air treatment, recovery of solvents, and the like).

A ceramic anode structure obtainable by a process comprising the steps of: (a) providing a slurry by dispersing a powder of an electronically conductive phase and by adding a binder to the dispersion, in which said powder is selected from the group consisting of niobium-doped strontium titanate, vanadium-doped strontium titanate, tantalum-doped strontium titanate, and mixtures thereof, (b) sintering the slurry of step (a), (c) providing a precursor solution of ceria, said solution containing a solvent and a surfactant, (d) impregnating the resulting sintered structure of step (b) with the precursor solution of step (c), (e) subjecting the resulting structure of step (d) to calcination, and (f) conducting steps (d)-(e) at least once.

The invention belongs to the technical field of a multilayer structural composite material member and a preparation method thereof and specifically discloses the composite material member with a surface function layer and a VIMP preparation method thereof. The composite material member comprises an outer surface layer and a main body layer, wherein, the outer surface layer and the main body layer are respectively a first composite material system and a second composite material system; and the first composite material system takes epoxy resin, phenolic resin and the like as a matrix, the second composite material system takes unsaturated polyester resin as a matrix, and the two systems take fiber cloth of carbon fiber or glass fiber as reinforcement. The VIMP preparation method comprises the following steps: firstly preparing a reinforced resin film on a die surface for vacuum dip molding by a resin film infiltration process, and then preparing the composite material member with a molding die covered with the reinforced resin film through the vacuum dip molding process. The VIMP process of the invention combines the double advantages of an RFI process and the VIMP process; and the obtained composite material member has better surface quality, better integrity and excellent comprehensive performances.

The invention relates to an Mg alloy/Al2O3 composite light in weight and high in strength, in particular to an Mg alloy/Al2O3 composite and a preparation method thereof. The Mg alloy/Al2O3 composite is composed of a lamellar structure Al2O3 substrate prepared by an ice template method and Mg alloy composited in lamellar spacing of the substrate by impregnation, and is obtained by soaking in a silica sol a lamellar structure Al2O3 base made by ice template oriented solidification so that nano SiO2 covers the surface of Al2O3 lamellas, and carrying Mg alloy impregnation in Ar atmosphere. This composite has high specific strength and has compressive strength up to 697 MPa when its density is 2.57 g/cm<3>.

A system for charging lapping plates incorporates the use of individual ceramic inserts that are mounted into a stainless steel frame to form a novel charging tool. The charging tool is rotated clockwise against a counterclockwise rotating tin plate. This configuration performs a rapid diamond impregnation into the plate without scraping off the diamond slurry from the plate. This design uses the diamond material in the plate charging slurry very efficiently. The inserts may be formed from high density ceramic in a round or cylindrical pad-like design. This design allows high pressure contact between the inserts and the tin plate. As a result, the amount of time required to charge a plate is greatly reduced and only a small fraction of the diamond slurry is wasted, thereby producing a higher yield than prior art systems.

A method for manufacturing a work piece by Vacuum Assisted Resin Transfer Moulding is includes the steps of placing fibre rovings in a mould of a closed mould system which comprises a mould cavity, placing at least one resin distribution device between the fibre rovings, and applying vacuum to the closed mould system and injecting resin into the mould cavity.

A composite metal block is prepared from the powdered material with high smelting point and the metallic material with lower smelting point through loading them in an infiltration container, putting the container in heater, vacuumizing while preheating, heating untile the temp is higher than the smelting point of metallic material bue lower than the smelting point of powdered material for smelting the metallic material to become liquid, holding the temp while pressurizing, and cooling. Its advantages are high infiltration speed, high uniformity, and large size of product.

The invention discloses an ultra-high power graphite electrode pressing device with a dipping function. The ultra-high power graphite electrode pressing device with the dipping function comprises a base, wherein a pressing tank and a liquid storage tank are fixedly arranged on the base; a sealed cap is fastened to the upper end of the pressing tank in a sealing way; an electric-hydraulic push rodI and multiple electric-hydraulic push rods II distributed circumferentially by adopting the electric-hydraulic push rod I as the center are vertically and fixedly arranged on the sealed cap; the pressing tank is internally divided into a dipping chamber on the upper part and a pressing chamber on the lower part; and the inner diameter of the pressing chamber is smaller than the inner diameter ofthe dipping chamber. The ultra-high power graphite electrode pressing device with the dipping function has the beneficial effects that an ultra-high power graphite electrode block blank can be pressedand dipped in the pressing device, so that the trouble of conveying the block blank is saved, the production time is saved, the production efficiency of an ultra-high power graphite electrode is improved, the steps of the pressing and dipping processes are less, the pressing and dipping speed is fast, the efficiency is high, and the practicability is good.

The invention provides an epoxy resin composition capable of being rapidly cured at medium and low temperatures, an epoxy resin-based composite material and a preparation method thereof. The epoxy resin composition capable of being rapidly cured at medium and low temperatures comprises the following components in parts by weight: 100 parts of epoxy resin, 0.1-5 parts of an imidazole accelerant, 2-40 parts of filler, 30-200 parts of an anhydride curing agent, 1-40 parts of a toughening agent and 0.5-10 parts of a release agent. According to the epoxy resin composition capable of being rapidly cured at medium and low temperatures, the epoxy resin-based composite material and the preparation method of the epoxy resin-based composite material, the medium and low temperature curing time of the epoxy resin-based composite material can be obviously shortened through cooperation of the anhydride curing agent, the imidazole accelerant and other raw materials in the epoxy resin composition; meanwhile, the pultrusion speed of the composite material in a pultrusion process is remarkably improved, and the composite material is excellent in mechanical property and high in glass transition temperature.

The invention discloses a preparation device and a preparation method for a pressure infiltration-negative pressure adsorption combined metal-matrix composite material, and belongs to the field of metal-matrix composite materials. The invention aims at the problems of low infiltration speed and difficulty to prepare a metal-matrix composite material with uniform reinforcement phase distribution due to low wettability of many matrix metals (such as aluminum alloy), when the metal-matrix composite material is prepared through a pressure infiltration method, and designs a preparation device and apreparation method for a pressure infiltration-negative pressure adsorption combined metal-matrix composite material. The preparation device and the preparation method are capable of realizing the simultaneous progress of low-pressure infiltration and negative-pressure adsorption, and the metal-matrix composite material with the uniform reinforcement phase distribution is prepared.

A method for producing a blade member 1 includes an impregnation step of impregnating at least a portion of a surface of a blade portion 11 made of a polyurethane rubber with a surface treatment liquid that includes a salt of diazabicycloundecene and a carbodiimide-modified polyvalent isocyanate compound including a carbodiimide-modified polyvalent isocyanate dimer and a carbodiimide-modified polyvalent isocyanate trimer or higher multimer, in which a content of the trimer or higher multimer is 50% by mass or less, and a cured layer formation step of heating and curing the carbodiimide-modified polyvalent isocyanate compound which is impregnated into the blade portion 11, to form a cured layer 110.

A method of manufacturing a bundle of roving yarns is described. The method is characterised in assembling a number of roving yarns of longitudinal unidirectional fibres and an additional component in a bundle. For example, at least one resin distribution means or a thermoplastic material may be placed as the additional component in the bundle.