62results about How to "Play a role in separating" patented technology

The invention discloses surface-modified ultrafine steel fiber reinforced high-impedance ultrahigh-performance concrete and a preparation method thereof, and belongs to the technical field of buildingmaterials. The ultrahigh-performance concrete comprises the following components in parts by mass: 50-300 parts of surface-modified ultrafine steel fiber, 500-1500 parts of cement, 50-500 parts of amineral admixture, 1000-1800 parts of fine aggregate, 5-40 parts of a chemical admixture and 150-650 parts of water. The preparation method comprises the following steps: preparing a nanometer silicondioxide modifier; performing surface modification on ultrafine steel fiber; stirring and curing concrete. Through modification of growing SiO2 on the surface of the ultrafine steel fiber, morphologically, the surface roughness is improved and a friction coefficient between the fiber and a matrix is increased, and chemically, by virtue of high volcanic ash activity of nanometer SiO2, secondary hydration is performed on the nanometer SiO2 and a cement hydration product Ca(OH)2 to produce calcium silicate hydrate gel C-S-H so as to improve a weak interfacial region; the flexural strength of thesurface-modified ultrafine steel fiber reinforced high-impedance ultrahigh-performance concrete reaches 25MPa or above, and the electrical resistivity thereof reaches 20,000 ohm.cm or above.

A surface modified carbon fiber reinforced high-resistance and high-tensile-strength cement-based 3D printing base material and a preparation method thereof belong to the technical field of building materials. The surface modified carbon fiber reinforced high-resistance and high-tensile-strength cement-based 3D printing base material is composed of, by weight part, 10-70 parts of surface modifiedcarbon fiber, 500-1500 parts of cement, 0-2000 parts of aggregate, 50-500 parts of mineral additives and 10-50 parts of chemical additives. The preparation method of the surface modified carbon fiberreinforced high-resistance and high-tensile-strength cement-based 3D printing base material specifically comprises the steps of preparation of nano-silica modifier; surface modification of carbon fiber, and preparation of the 3D printing base material. The surface modified carbon fiber reinforced high-resistance and high-tensile-strength cement-based 3D printing base material has the advantage that, through modification treatment of growing SiO2 on the surface of the carbon fiber, a layer of inactive but highly pozzolan-hydration active nano SiO2 can be formed on the surface of the carbon fiber and subjected to secondary hydration with a cement hydration product of Ca(OH)2 to produce calcium silicate hydrate C-S-H to improve interfacial weak areas, thereby further improving cooperativity and interfacial bonding strength between the carbon fiber and a cement base, giving full play to performance advantages of materials and achieving a tensile strength higher than 30 MPa.

The invention provides a grip type milling and turning composite special blade under an extreme super-heavy load condition, which belongs to the technical field of mechanical machining tools. The invention aims at solving problems of the generation of large quantities of chippings, easiness for softening the tool, serious bonding phenomenon between the blade and chips as well as easiness for snapping the blade in the cutting process under the extreme super-heavy load condition at the present. The blade is shaped like a triangular prism; double-arc unequal-side chamfered cutting edges are machined at the intersected parts of the upper blade face and three side blade faces of the blade; a chip breaking recess is formed in the middle of the blade; a boss is arranged at the corner part of the upper blade face of the blade; main and sub cutting edge partition grooves vertical to the double-arc unequal-side chamfered cutting edges are formed in the middle of the double-arc unequal-side chamfered cutting edges; a tightening bolt hole is formed in the middle of the blade; an arc T-shaped recess is formed in the upper blade face of the blade close to the tightening bolt hole; the upper blade face of the blade is provided with a spherical projection and provided with a circular arc groove; a pit is formed in the intersected part of each side blade face and a lower blade face of the blade; and a V-shaped heat radiation groove is formed in the lower blade face of the blade. The grip type milling and turning composite special blade under the extreme super-heavy load condition, provided by the invention, is used for cutting parts under the extreme super-heavy load condition.

The invention provides a fireproof heat-preservation fabricated concrete partition wall structure and a production technique thereof and relates to the technical field of fabricated buildings. The fireproof heat-preservation fabricated concrete partition wall structure comprises a first partition plate layer, a second partition plate layer, a top partition plate layer and a bottom partition platelayer, the first partition plate layer and the second partition plate layer are oppositely arranged, the top partition plate layer is located at the tops of the first partition plate layer and the second partition plate layer, and the bottom partition plate layer is located at the bottoms of the first partition plate layer and the second partition plate layer. A reinforcing space is defined amongthe first partition plate layer, the second partition plate layer, the top partition plate layer and the bottom partition plate layer, and a plurality of reinforcing column bodies are arranged in thereinforcing space. According to the concrete partition wall structure, the partition effect can be achieved, the more strict technological requirement can be further met, and the supporting strength of the concrete partition wall structure is very good; and according to the production technique of the fireproof heat-preservation fabricated concrete partition wall structure, the method is simple and easy to implement, and industrialized operation is easy.

The invention relates to the technical field of pressure-sensitive adhesives, in particular to a conductive sponge and its preparation method and application. The conductive sponge includes the following raw materials: acrylate copolymer, active monomer, tackifying resin, foaming agent, photoinitiator and the first A thermal initiator; the pressure-sensitive adhesive of the present invention is a light-heat-curable pressure-sensitive adhesive. The characteristic of light-curing is that the area that is more likely to be irradiated is more likely to react, and the shadow area that is not irradiated does not react. Therefore, the characteristic of light-curing is used And by controlling the curing conditions, the surface of the pressure-sensitive adhesive is cured first, and then heat-cured after it has a certain hardness. Foaming is carried out while heat-curing, so that bubbles are formed inside the pressure-sensitive adhesive, thereby obtaining a sponge structure inside and a surface. A pressure-sensitive adhesive with an integral bonding surface that combines conductive, elastic and tacky functions.

The invention discloses a sewage biochemical treatment integrated device, system and process method. The sewage biochemical treatment integrated device comprises a pond body (17), wherein an incline guide baffle plate (6) is arranged in the pond body (17), one side of the incline guide baffle plate (6) is provided with an aeration assembly (12) and a vertical gas stripping and reflowing assembly (4), an outer reflowing sludge discharging bucket / trough (13) is arranged between the aeration assembly (12) and the incline guide baffle plate (6), the other side of the incline guide baffle plate (6) is provided with a settling assembly (10) and an incline guide plate / tube (9) parallel with the incline guide baffle plate (6), a chemical spraying perforated pipe (8) is arranged above a water feeding hole of the incline guide plate / tube (9), a settled sludge discharging bucket / trough (14) is arranged below the settling assembly (10), and a movable shielding plate (16) is arranged above the settling assembly (10). The sewage biochemical treatment integrated device has the advantages of small occupation area, low energy consumption, engineering investment reduction, low operation cost and easiness in operation and management because of the combination of gas stripping and reflowing circulating denitrification and suspension cleared sediment dephosphorization.

The invention discloses a preparation method of graphene aerogel with an ultrahigh specific surface area, and aims to enlarge the specific surface area of graphene aerogel without affecting the chemical structure of graphene. The preparation method comprises the following steps: taking graphite powder and siloxane as the main raw materials, preparing oxidized graphene, preparing a dispersion liquid of oxidized graphene, preparing silicon oxide hybridized graphene gel, drying the gel, and finally carrying out high-temperature decomposition to obtain the graphene aerogel with an ultrahigh specific surface area. The raw materials are mixed in liquid, after reactions, silicon oxide nano particles with an extremely small particle size can be evenly dispersed, thus the graphene is dispersed, and the agglomeration is prohibited. Furthermore, high-temperature decomposition is performed to remove the silicon oxide, at the same time the high-temperature decomposition has a certain activating effect, thus the prepared graphene aerogel has an ultrahigh specific surface area, which can reach 2491 m<2> / g, and at the same time the chemical structure is barely influenced.