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82results about How to "High structural density" patented technology

Concrete viscosity regulator suitable for compatible use with polycarboxylic acid water reducer and preparation method thereof

ActiveCN104973817ACompatible with good compatibilityNo stratificationAcid waterCement slurry
The invention discloses a concrete viscosity regulator suitable for compatible use with a polycarboxylic acid water reducer and a preparation method thereof; the concrete viscosity regulator comprises the components by the weight percentage: 0.1%-10% of a clay stabilizer, 0.01%-5% of an air-entraining agent, 0.001%-5% of a foam stabilizer, 0.001-10% of a thickener, and 75%-99% of water. The preparation method comprises the steps: firstly, adding water to a stirrer, fully mixing evenly other components, starting up the stirrer, after running smoothly, slowly adding the materials, and thus obtaining the concrete viscosity regulator when the materials are fully dissolved and stirred evenly. With cooperative use of the prepared viscosity regulator with the polycarboxylic acid water reducer, the polycarboxylic acid water reducer can be promoted to be adsorbed on cement particle surfaces to form a water film lubrication layer, a cement slurry steric-hinerance effect and rheological properties (the cement slurry has low plastic viscosity and higher yield stress) are effectively increased, wrapping performance on aggregates is increased while the viscosity of the concrete slurry is reduced, and thus the concrete construction performance is improved.
Owner:NANJING HYDRAULIC RES INST

A concrete viscosity modifier suitable for use in combination with polycarboxylate water reducer and preparation method thereof

ActiveCN104973817BCompatible with good compatibilityNo stratificationAcid waterReducer
The invention discloses a concrete viscosity regulator suitable for compatible use with a polycarboxylic acid water reducer and a preparation method thereof; the concrete viscosity regulator comprises the components by the weight percentage: 0.1%-10% of a clay stabilizer, 0.01%-5% of an air-entraining agent, 0.001%-5% of a foam stabilizer, 0.001-10% of a thickener, and 75%-99% of water. The preparation method comprises the steps: firstly, adding water to a stirrer, fully mixing evenly other components, starting up the stirrer, after running smoothly, slowly adding the materials, and thus obtaining the concrete viscosity regulator when the materials are fully dissolved and stirred evenly. With cooperative use of the prepared viscosity regulator with the polycarboxylic acid water reducer, the polycarboxylic acid water reducer can be promoted to be adsorbed on cement particle surfaces to form a water film lubrication layer, a cement slurry steric-hinerance effect and rheological properties (the cement slurry has low plastic viscosity and higher yield stress) are effectively increased, wrapping performance on aggregates is increased while the viscosity of the concrete slurry is reduced, and thus the concrete construction performance is improved.
Owner:NANJING HYDRAULIC RES INST

Green high-strength and high-toughness concrete and preparation process thereof

The invention relates to the field of concrete, and particularly discloses green high-strength and high-toughness concrete and a preparation process thereof. The green high-strength and high-toughness concrete is prepared from the following raw materials in parts by weight: cement, fly ash, mineral powder, natural aggregate, modified regenerated aggregate, water, an additive and composite fibers, a preparation method of the modified regenerated aggregate comprises the following steps: weighing waste concrete blocks, pretreating to obtain regenerated aggregate, putting the regenerated aggregate into a sodium gluconate solution, stirring and soaking, then taking out the regenerated aggregate, and performing drying post-treatment to obtain the modified regenerated aggregate; the preparation method comprises the following steps: weighing the cement, the fly ash and the mineral powder, mixing and stirring to obtain a premix; weighing the natural aggregate, the modified regenerated aggregate and the composite fiber, stirring and mixing to obtain a mixture; weighing the water, the additive, the premix and the mixture, mixing and stirring to obtain a mixture, and pouring and curing to obtain the concrete, the concrete has the advantages of greenness, high strength and high toughness.
Owner:深圳市深建混凝土有限公司

Electronic product aluminum shell cold forging (cold heading) method and product thereof

The invention discloses an electronic product aluminum shell cold forging (cold heading) method and a product thereof. The method comprises the following steps that (1), an aluminum board is prepared; (2), a cold forging mould carries out cold forging on the aluminum board and an aluminum shell blank in a needed shape is moulded; (3), the inner surface of the aluminum shell blank is machined; and (4), the outer surface of the aluminum shell blank is machined, and an electronic product aluminum shell product is obtained. The method is simple in process, the cold forging procedure replaces a pressure casting procedure and is easy to implement, the production period is greatly shortened, the production efficiency is high, and the cost is low. The structural density of the prepared product is large, the overall structural intensity is improved effectively, the heat conduction and heat dissipation properties are good, the comprehensive performance is good, and the application range is wide, for example, the electronic product aluminum shell cold forging (cold heading) method and the product thereof can be used for producing radiators, mechanical and electrical product end covers, communication cavities, USB flash disk cover bodies, fingerprint product cover bodies, cover bodies of other electronic products and the like.
Owner:余千军

Carbon-based nano novel field electron emission material in areatus layered structure and preparation method thereof

The invention discloses a carbon-based nano novel field electron emission material in areatus layered structure. The nano material is formed by the way that nano film in areatus structure is deposited on a substrate and then dense nano microtubules are grown at the edge point of the nano film, the nano microtubules are grown at the point of the areatus structure, wherein the height of the areatusstructure is 0.5-5Mum, the included angle of the long side of the areatus structure and the normal of the surface of the substrate is less than or equal to 20 degrees, and the height of the nano microtubule is 1-1000nm. The novel field electron emission carbon-based nano material is subject to recombination and optimization on structural characteristic thereof and can overcome the problems that single-wall and multi-wall carbon-based nano tubes manufactured by the prior art are poor in degree of graphitization and low in texture density and have crystal defects; emission efficiency and current distribution requirements are met, and the application thereof in multiple fields can be effectively widened; besides, the invention also provides a preparation method of the material.
Owner:CHONGQING XINHE QIYUE TECH CO LTD

Preparation method of high-strength type foaming and cushioning packaging material

The invention relates to a preparation method of a high-strength type foaming and cushioning packaging material and belongs to the technical field of preparation of packaging materials. The preparation method provided by the invention is characterized in that bamboo pulp is taken as a main body and is subjected to pulping treatment and then fermentation modification; by virtue of fermentation treatment, internal pores of the material are greatly increased, and the specific surface area is increased; furthermore, by virtue of fermentation, bamboo pulp fibers are effectively decomposed and saccharified, and the formed saccharified liquid improves the gel network of the starch material, increases the expansion properties of the material, effectively increases the structure density of the gelmaterial and modifies the mechanical properties of the composite material; by performing pulping treatment on the bamboo pulp fibers, the fibers are cut off and are mutually extruded to generate a large number of fine fibers; and because the fine fibers contain a large number of hydroxyl groups, the hydrogen bonding degree among the fibers is effectively increased, the bonding strength among the fibers is effectively increased, the formed fiber network is richer, and the curl degree and the adhesive force of the fibers are effectively increased, thereby greatly increasing the mechanical properties of the material.
Owner:常州杰轩纺织科技有限公司

High-efficient LED (light emitting diode) lamp

The invention discloses a high-efficient LED (light emitting diode) lamp which mainly comprises an alternating current LED module and a radiating lamp seat, wherein the alternating current LED module is provided with a heat conducting part and an electric connection part; the radiating lamp seat is made of nonmetal which has good thermal diffusivity and is in a porous structure, can be directly molded into a shape of the lamp seat, and is provided with an indented part used for accommodating the alternating current LED module; the heat conducting part of the alternating current LED module is combined with the indented part of the radiating lamp seat; and the electric connection part is connected with an external power source. The high-efficient LED lamp provided by the invention also comprises a heat conducting fin, wherein the heat conducting fin is arranged between the heat conducting part of the LED module and the radiating lamp seat; and when the LED is illuminated, the heat generated by the LED can be conducted promptly by the heat conducting fin, thus the heat on the heat conducting fin can be conducted promptly to the radiating lamp base for radiating. The heat radiating lamp seat in the invention can be directly molded into a shape of a common lamp seat, and has the functions of heat radiating and electrical insulation efficiency; and the high-efficient LED lamp can be used for replacing a known lamp bulb, and can be directly used for replacing a lamp bulb without replacing the light fitting.
Owner:秦文隆

Nano multi-layer composite solid lubricating film layer with long service life under space irradiation and preparation thereof

The invention discloses a nano multi-layer composite solid lubricating film layer with a long service life under space irradiation and preparation thereof. The nano multi-layer composite solid lubricating film layer composed of a Ti binding layer, a TiN bearing layer and an AgTiNi/MoS2Ti nano multi-layer lubricating functional layer is deposited on a titanium alloy substrate, an aluminum alloy substrate, a stainless steel substrate, a bearing steel substrate and the like by adopting a closed magnetic field unbalanced magnetron sputtering technology. The nano multi-layer composite film layer can reliably serve for a long time in strong space irradiation environments such as low-orbit high atomic oxygen density, medium-high-orbit high electron proton density and high ultraviolet irradiation dose, and is high in bearing capacity and low in friction coefficient, thus, the service life of a moving part of a spacecraft exposed in the space irradiation environments can be greatly prolonged, and the reliability of the moving part is improved. In addition, the preparation method has the characteristics that the process is environment-friendly and flexible, the film thickness is uniform, the compactness is good, the preparation process of the film layer is controlled in a programmed manner, the modulation period of the film layer is easy to regulate and control, and batch treatment can be realized, industrial production is easy to realize, and the good application prospect is achieved.
Owner:SHANGHAI AEROSPACE EQUIP MFG GENERAL FACTORY

High-surface smoothness CBN grinding wheel with ultrafine granularity and containing nanometer carbon spheres and preparation method thereof

The invention discloses a high-surface smoothness CBN grinding wheel with ultrafine granularity and containing nanometer carbon spheres; firstly, CBN abrasives with ultrafine granularity and microcrystal ceramic abrasives are pretreated in the preparation process of the grinding wheel; the treated abrasives are improved in mechanical performance, and are better in bonding effect with adhesive; abrasives treated by solution prepared by sodium polystyrenesulfonate and polyethyleneimine are excellent in dispersibility, are not easy to be agglomerated, and are formed to a stable system without being precipitated and flocculated in the solution; dried powder and adhesive are better in wettability and compatibility, and are tight and firm in bonding; the added nanometer carbon spheres effectively improve the heat dissipation and heat conduction performances of the grinding wheel, and improve the structural compactness; fluorine carbon resins serve as adhesive to enable the surface of the grinding wheel to become more smooth; waste chips are not easy to be bonded, and are easy to be removed; and the grinding wheel is high in strength, smooth and compact in surface, quick in cooling and not easy to damage workpieces, resists both wear and corrosion, and can be applied to the grinding of metal parts with high precision.
Owner:安徽威铭耐磨材料有限公司

Vibration device for vibrating gypsum in denture processing

The invention discloses a vibration device for vibrating gypsum in denture processing. The vibration device comprises a vibration base, wherein the vibration base is internally provided with a plurality of groups of vibration assemblies and a transformer; a platform is arranged at the upper end of the vibration base; the platform is connected with the vibration assemblies; each vibration assemblycomprises an upper spring, a lower spring, a vibration rod capable of moving up and down and a barrel body; a cap cover is fixed at the upper end of each barrel body and the lower end of each barrel body is connected with the vibration base; the top of each vibration rod is connected with the platform and the lower end of each vibration rod penetrates through the corresponding cap cover and stretches into an inner cavity of the corresponding barrel body to be connected with a sliding block; each sliding block is in slippage match with an inner wall of the corresponding barrel body; each upperspring sleeves the upper end of the corresponding vibration rod and is located between the platform and the corresponding cap cover; each lower spring sleeves the lower part of the corresponding vibration rod and is located between the corresponding cap cover and the corresponding sliding block. When the vibration device is used, gypsum to be processed is placed on the platform so that the structural density of the gypsum is improved; the working efficiency is improved and the processing quality of a product is also ensured.
Owner:武汉金光医疗科技有限公司

High-strength PE electric conduit and preparation method thereof

The invention relates to the field of power cable accessory preparation, and particularly discloses a high-strength PE power conduit and a preparation method thereof. The high-strength PE electric conduit comprises a PE pipe, an adhesion promoting layer and an epoxy resin layer, the adhesion promoting layer is prepared from a polyurethane hot melt adhesive and modified silicon carbide fibers; the epoxy resin layer is prepared from the following raw materials: epoxy resin, an amine curing agent, a toughening agent, modified composite fibers, filling micro powder, a flatting agent and an anti-ultraviolet additive; the preparation method comprises the following steps: hot-melting the polyurethane hot melt adhesive, and mixing with the modified silicon carbide to obtain an adhesion-promoting coating; weighing epoxy resin, an amine curing agent, a toughening agent, modified composite fibers, filling micro powder, a flatting agent and an anti-ultraviolet additive, and mixing to obtain an epoxy resin coating; the surface of the PE pipe is sprayed with an adhesion-promoting coating, then the surface of the PE pipe is sprayed with an epoxy resin coating, and after curing, the adhesion-promoting coating is cured into an adhesion-promoting layer; the epoxy resin coating is cured into an epoxy resin layer; the invention has the advantages of improving the mechanical strength of the electric conduit and prolonging the service life of the electric conduit.
Owner:广东中讯通讯设备实业有限公司

Compound diamond grinding wheel for lens polishing and preparation method thereof

The invention discloses a compound diamond grinding wheel for lens polishing. The grinding wheel comprises a grinding wheel body, a left end cover and a right end cover, wherein the left end cover andthe right end cover are fixed in the middle of the left side and the middle of the right side of the grinding wheel body, a round hole is formed in the middle of the grinding wheel body, the side edge of the round hole is provided with positioning grooves, the side surface of the grinding wheel body is provided with clamping grooves, and cylindrical insertion protrusions for being inserted into the round hole are arranged in the middle of the right end of the left end cover and in the middle of the left end of the right end cover. Positioning protrusions matched with the positioning grooves are arranged on the surfaces of the cylindrical insertion protrusions, and clamping protrusions matched with the clamping grooves are arranged on the surface of the right end of the left end cover andon the surface of the left end of the right end cover. The positioning protrusions are matched with the positioning grooves, and the clamping protrusions are matched with the clamping grooves so thatpolishing can be carried out when the grinding wheel body rotates at a high speed, and the grinding wheel body is protected.
Owner:启东蓝威金刚石科技有限公司

A kind of diamond resin grinding wheel and mold and method for processing the grinding wheel

The invention relates to a diamond resin wheel and a mold and a method for machining the resin wheel. The resin wheel comprises a base body and abrasive material layers, wherein the abrasive layers are at least two abrasive layers which are fixed on the surface or the outer circle of a base body through extrusion and hot pressing, and each abrasive layer is formed by mixing and pressing differentcoarse and thin diamond particles and a binding agent; and the bonding position of the abrasive material layers and the base body are adopted with a dovetail-type structure, and the bonding faces arefurther processed into rough surfaces; the mold comprises a positioning base, a mold frame and a center mold, wherein the inner wall of the mold frame and the bottom face of the center mold form a placement area of the diamond resin wheel base body, a gap for installing a pressure head is arranged between the inner wall of the mold frame and the outer wall of the center mold, and the center mold is assembled with an assembling rod in a fixed mode through a fastening nut to be limited; the method for machining the resin wheel comprises the following steps that 1) the resin wheel base body is prepared; 2) the base body is fixed; 3) the abrasive material layers are pressed in advance; 4) hot-pressing forming is carried out; and 5) shaping and manufacturing are carried out. According to the method, a specially designed mold and a machining mode are adopted, so that the resin wheel with multiple utilization can be produced, and the grinding efficiency is improved.
Owner:湖南鑫星凌金刚石工具有限公司
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