66results about How to "Low production and processing costs" patented technology

The invention provides a kind of carbon nanotube / short-fiber composited nano-carbon paper and a continuous preparation method thereof. The nano-carbon paper mainly comprises disordered carbon nanotubes and short fibers, and is in a non-woven form. The preparation method of the nano-carbon paper comprises the following steps that: the disordered carbon nanotubes are dispersed in a solvent so as to form a dispersion liquid; then, mixing and dispersing the short fibers so as to form a size; preparing an initial film through vacuum assisted flow-casting film-forming; and then, removing polymers in the initial film through subsequent processing so as to obtain a target product. The composited nano-carbon paper disclosed by the invention integrates the huge specific surface areas, superior conductivity and functional characteristics of the carbon nanotubes and the enhancement effect of the short fibers on the strength and flexibility of the carbon paper, therefore, the composited nano-carbon paper is good in self-supporting property and flexibility; meanwhile, through the direct film-forming implemented by using a flow-casting method, the continuous film-forming of the nano-carbon paper is realized, therefore, the nano-carbon paper has the advantages of high efficiency, rapidness and easy large-scale preparation. The composited nano-carbon paper disclosed by the invention has a wide application prospect in the fields of energy electrodes, catalytic carriers, environmental management, static resistance, electromagnetic shielding, wave-absorbing camouflage, and the like.

The invention relates to a perlite heat-insulating shield for filling a fire-proof door and a method for the production thereof, which mainly comprises expanded perlite powder particles of 75 to 100 parts and fireproof adhesive of 10 to 65 parts by weight, the heat-insulating shield also contains 40 to 70 parts of water by weight before drying the base body of the heat-insulating shield for adjusting the degree of dryness of the formed materials, the fireproof adhesive is a modified sodium silicate fireproof adhesive prepared by mixing 80 to 95 parts of sodium silicate, 2 to 6 parts of sodium carbonate and 4 to 20 parts of magnesium silicate by weight. The perlite heat-insulating shield solves the problems of large unit weight, bad high temperature heat insulation effect and low intensity of the prior art, and is mainly used for being filled in interlinings of fire-protecting devices such as fire-proof doors for fire protection and thermal insulation.

The invention relates to the field of composite materials for denture, in particular to a zirconium oxide / resin bionic composite material for the denture and a preparation method thereof. The zirconium oxide / resin bionic composite material is prepared from the following components of 20vol% to 97vol% of zirconium oxide and biocompatible resin, and is of a bionic lamellar structure, a brick-wall structure or a crossed laminating structure in a microscopic way. The zirconium oxide / resin bionic composite material has the advantages that the oriented porous blank with the lamellar structure is obtained by slurry preparation, freezing-casting and vacuum freeze-drying, and is compressed along the lamellar structure direction to form the crossed laminating structure; the zirconium oxide skeletonwith the lamellar structure or crossing laminating structure can be prepared by removing organic matters and sintering, and the zirconium oxide skeleton of the brick-wall structure can be obtained through the vertical compression of the lamellar structure skeleton and the secondary sintering; the surface is subjected to surface modifying and liquid resin monomer permeating, and the resin is polymerized, so as to obtain the zirconium oxide / resin bionic composite material for the denture with the bionic structure; the prepared zirconium oxide / resin bionic composite material is mainly used as thedenture, so as to reduce the abrasion to the normal teeth of a human body by the denture.

The invention provides a hydraulic cylinder durability test bed. The hydraulic cylinder durability test bed comprises a test loop and a control loop, wherein the test loop comprises a first hydraulic cylinder, a second hydraulic cylinder and an oil tank; a piston rod of the first hydraulic cylinder is connected with a piston rod of the second hydraulic cylinder through a quick coupling; two chambers of the first hydraulic cylinder are connected with two working oil ports of an M-type reversing valve through hydraulic control one-way valves and one-way throttle valves respectively; two chambers of the second hydraulic cylinder are connected with working oil ports of a second P-type reversing valve through one-way valves respectively; pressure oil ports of the M-type reversing valve and the second P-type reversing valve are connected with the working oil ports of a first P-type reversing valve respectively; the first P-type reversing valve is used for selecting test modes; the control loop controls on-off of the hydraulic control one-way valves through the reversing valves, so that constant-speed, constant-pressure and durability test modes of the hydraulic cylinders are realized, the switching is relatively convenient, higher universality is realized, and addition of load weight of the hydraulic cylinders in working condition tests is avoided.

The invention discloses a cable stripping device. The device comprises a pipe, a clamping block, a fixed block, a thumb screw, a bearing, a link block, a hydraulic rod, a hydraulic rod regulator and a blade. The fixed block is installed in interior of the pipe. The clamping block is installed on the pipe through the thumb screw and the clamping block is located over the fixed block. The clamping block can be moved up and down under the effect of the thumb screw. The bearing is installed at the front end of the pipe. The bearing is connected with the hydraulic rod through the link block. The hydraulic rod regulator is installed at one end of the hydraulic rod. The blade is installed at opposite end of the hydraulic rod. The blade is opposite to the axis of the pipe all the time. The cable stripping device has the advantages that the structure is simple, the cutting is stable and the cut is even. At the same time, according to the cable stripping device, cables of different line diameters can be cut as well. A main body is made by aluminium alloy, which make the weight of the whole device decreased, the manufacturing and processing cost low and the cable stripping device suitable for widespread use.

The invention relates to the technical field of hot dry rock thermal energy development, in particular to a system for collecting thermal energy of hot dry rock with a U-shaped well. The overall system for collecting the thermal energy of the hot dry rock with the U-shaped well is in a U-shaped channel and comprises an injection sleeve and heat preservation system of the injection sleeve, a rock heat utilization cascade heating system, a long-lead cyclone type self-flushing underground heat exchange system and a collecting well sleeve and heat preservation system of the collecting well sleeve.The rock heat utilization cascade heating system and the long-lead cyclone type self-flushing underground heat exchange system are each formed in the manner that a plurality of groups of cyclone typeself-flushing underground heat exchangers are connected. Each cyclone self-flushing underground heat exchanger is a spiral grooved tube. The system for collecting the thermal energy of the hot dry rock with the U-shaped well can be widely applied to enhancement type geothermal systems for hot dry rock thermal energy development and is low in cost, high in heat exchange efficiency and simple in system heat exchange cycle channel.

The invention relates to the field of foam ceramics, in particular to double-scale foam ceramics with macro-scale three-dimensional communicated hole diameter and micron-grade three-dimensional communicated hole diameter and a preparation method thereof. The silicon carbide foam ceramics have a three-dimensional communicated network structure; a millimeter-grade hole diameter is expressed in macrography; and a micron-grade mutual communicated mesh is expressed in a ceramic skeleton rib. A hole forming agent is uniformly mixed into silicon carbide slurry in the process of moulding a foal ceramic blank so that the silicon carbide foam ceramics are made into double-scale foam ceramics; and the double-scale silicon carbide foam ceramics are three-dimensional communicated network foam ceramics which simultaneously have macro-millimetre scale hole diameter and skeleton rib internal micron scale hole diameter. By being used as a reinforced body of a ceramic / metal double-continuous phase composite material, the double-scale silicon carbide foam ceramic material can eliminate foam skeleton cracks in a composite material, improve composite quality and expand the application of the composite material in friction brake, armour protection, electronic packaging, and the like.

The invention provides a fabricated non-dismantling formwork support system and a manufacturing method of the non-dismantling formwork system. The fabricated non-dismantling formwork support system is used for closed plastic support for cast-in-place forming of concrete structure building components. The fabricated non-dismantling formwork support system comprises a scaffold, a back edge support, a surface support and formworks which are sequentially and fixedly arranged from outside to inside of the building components; the formworks are fabricated non-dismantling formworks without modulus specification limitation, and the sizes and the connecting and splicing precision of the adjacent formworks in all directions are both smaller than 0.5mm; and corner supports are arranged at the corners of the building components. The non-dismantling formwork system is in the continuous process of design, production, manufacturing and construction, and after automatic optimization splitting, bending, punching and numbering, high-precision rapid splicing is conducted on site. The overall process from design to construction is simplified, waste is small, construction is convenient and fast, the engineering quality is high, and the overall appearance is attractive.

The invention provides a kind of carbon nanotube / short-fiber composited nano-carbon paper and a continuous preparation method thereof. The nano-carbon paper mainly comprises disordered carbon nanotubes and short fibers, and is in a non-woven form. The preparation method of the nano-carbon paper comprises the following steps that: the disordered carbon nanotubes are dispersed in a solvent so as to form a dispersion liquid; then, mixing and dispersing the short fibers so as to form a size; preparing an initial film through vacuum assisted flow-casting film-forming; and then, removing polymers in the initial film through subsequent processing so as to obtain a target product. The composited nano-carbon paper disclosed by the invention integrates the huge specific surface areas, superior conductivity and functional characteristics of the carbon nanotubes and the enhancement effect of the short fibers on the strength and flexibility of the carbon paper, therefore, the composited nano-carbon paper is good in self-supporting property and flexibility; meanwhile, through the direct film-forming implemented by using a flow-casting method, the continuous film-forming of the nano-carbon paper is realized, therefore, the nano-carbon paper has the advantages of high efficiency, rapidness and easy large-scale preparation. The composited nano-carbon paper disclosed by the invention has a wide application prospect in the fields of energy electrodes, catalytic carriers, environmental management, static resistance, electromagnetic shielding, wave-absorbing camouflage, and the like.

The invention belongs to the technical field of bicycle saddles, and discloses a bidirectional torsional pendulum butterfly seat, which comprises a rotating shaft, the rotating shaft is sleeved with a pair of rotating drums, any rotating drum is provided with seat cushions, and the two rotating drums are arranged in a linkage mode through a reversing device. The equipment is provided with a pair of seat cushions, the two seat cushions are arranged in a linkage mode through the reversing device, when one seat cushion swings around the rotating shaft, the other seat cushion synchronously rotates around the rotating shaft in the reverse direction through transmission of the reversing device, and therefore the two seat cushions rotate around the rotating shaft in a staggered and reciprocating mode; the action perfectly fits the actions of both legs and buttocks of the rider during riding, so that the friction between the thigh roots of the rider and the seat cushion is effectively reduced; and the problems that in the prior art, a bicycle seat cushion harms physical health of a rider and is poor in comfort are solved.

The invention provides a V-groove substrate that can be used for the input and output ends of waveguide chips, including a substrate body and one or more V-grooves on it, and the V-groove includes an input section, a connecting section and an output section . In one implementation, the V-shaped groove is made into an optical fiber array and used for the output end of the waveguide chip, and the end face of the substrate body is perpendicular to the surface; the input section of the V-shaped groove is straight and is in line with the normal line of the end face of the substrate body. A certain deflection angle; the connecting section of the V-shaped groove is arc-shaped, and its bending radius is greater than the minimum bending radius required to meet the fiber macrobending loss index; the output section of the V-shaped groove is straight; when the number of V-shaped grooves is multiple, The V-shaped grooves are arranged in parallel, and the intervals between the V-shaped grooves are equal. Compared with the traditional V-groove substrate, the deflection angle of the V-groove substrate is flexible and adjustable, the control precision is extremely high, it can be produced in batches, and the processing cost is low.

The invention discloses a novel geological drill bit manufacturing method. The manufacturing method comprises the following steps of a, manufacturing of a metal tube body, b, manufacturing of a drilling bit, c, assembling of the metal tube body and the drilling bit, d, plug-in mounting of brass strips and coating of welding flux, e, high-frequency welding and f, cooling. Through the process step design, a geological drill bit can be effectively produced and manufactured through the manufacturing method, the process is simple, the manufacturing and machining cost is low, and the manufactured geological drill bit has the advantages of being good in stability and reliability and long in service life.