198results about How to "Designable" patented technology

The invention discloses a large spatial assembly type antenna reflector modular unit and an assembly method thereof. The modular unit comprises a hexagonal extensible truss, a reflecting rope net and a rope connecting device, wherein the hexagonal extensible truss comprises top hinges, a synchronous power hinge, annular rods, and middle slanting poles; two annular rods with the same length form asynchronous folding rod through the synchronous power hinge, and the synchronous power hinge is connected with two middle slanting poles through three top hinges to form a planar triangle structural unit; 12 planar triangle structural units are connected with one another by sharing the middle slanting poles and the top hinges to form a ring, namely the truss of the antenna reflector modular unit;during connection, synchronous folding rods of two adjacent triangle structural units are spatially staggered with each other, and two layers of hexagons with different sizes and staggered vertexes are formed spatially; the reflecting rope net comprises a metal net for reflecting electromagnetic waves and an adjusting rope for adjusting the shape surface of the metal net; the metal net is sewed on the adjusting rope which is fixed with the truss of the modular unit through the top hinges; and the rope connecting device is mainly used for connecting and fixing the reflecting rope net and the hexagonal extensible truss.

The invention relates to a method for preparing selectively enhanced aluminum-based composite from ceramic particles and belongs to the field of metal matrix composites (MMCs). The preparation method comprises the following steps: firstly, preparing porous ceramic blanks; and secondly, putting the porous ceramic blanks at a part needing to be enhanced, injecting molten alloy into a mould at 750-1,100 DEG C, applying pressure of 20-50MPa to forcibly fill the molten alloy into the porous ceramic blanks and a mold cavity, and solidifying, thus obtaining the selectively enhanced aluminum-based composite. The method has the advantages that a foaming technology, an injection molding and a gel casting process are combined, thus leading the porous ceramic blank to have designability; the MMC reinforcement and an aluminum matrix are integrally formed by adopting extrusion casting process, thus fully playing the advantages of high strength and high toughness of the aluminum matrix and wear resistance of the MMC reinforcement. The composite has the advantages of high thermal conductivity, good radiation capability, excellent wear resistance and light weight.

The invention relates to a fiber grating intelligent plate made of fiber reinforced polymer in a pulling extrusion and continuous forming mode and a manufacturing method thereof. The intelligent plate has civil engineering structural stress and self-monitoring double functions. The intelligent plate comprises a plate body composed of fiber grey yarns and matrix resin, wherein the plate body is filled with sensor fibers containing fiber grating sensors and transmission fibers in the fiber direction, the number of the sensor fibers is m, m is an integer larger than or equal to one, each sensor fiber is provided with n fiber grating sensors, and n is an integer larger than or equal to one. The intelligent plate is manufactured in a pulling extrusion and continuous forming process, the fiber volume content of the intelligent plate is no less than 60%, and the intelligent plate facilitates accurate control of tension control stress of fiber plates, compensation of lost prestress and real-time monitoring of reinforced structures when the fiber plates, especially prestress fiber plates are used for reinforcing and repairing concrete structures and steel structures.

The invention discloses a hollow-pipe micro-lattice metal oxide material constructed by adopting a template method and a preparation method thereof. The method comprises the steps: preparing a three-dimensional micro-lattice polymer template of a designed structure by adopting a rapid forming technology; depositing metal oxide on the surface of the micro-lattice polymer template so as to prepare a preformed body; removing a template, thereby obtaining the hollow-pipe micro-lattice metal oxide material. According to the hollow-pipe micro-lattice metal oxide material constructed by adopting the template method and the preparation method thereof, the template method and a thin-film deposition method are organically combined, and the prepared lightweight and porous hollow-pipe micro-lattice metal oxide material has the characteristic of low density and the properties of high strength, high modulus, high hardness, high-temperature resistance, corrosion resistance, radiation resistance, small thermal expansion coefficient and the like and is a multifunctional, lightweight and porous micro-lattice material. The hollow-pipe micro-lattice metal oxide material is applied to the fields of aviation, aerospace, electronic information and the like.

The invention relates to a quick-spliced sectional type composite material truss bridge which comprises facade trusses (1), cross beams (2) and bridge decks (3), wherein each facade truss (1) is composed of an upper chord beam (4), a lower chord beam (5), vertical web girders (6) and inclined web girders (7); the upper chord beam (4) and the lower chord beam are arranged in parallel on the facade and respectively fixed with the upper and lower ends of each vertical web girder (6); each inclined web girder (7) is slantly arranged between every two adjacent vertical web girders (6), and the upper and lower ends of each inclined web girder (7) are respectively fixed with the upper chord beam (4) and the lower chord beam (5); both ends of each cross beam (2) are respectively fixed with two vertical web girders (6) parallel to the facade trusses (1) on the corresponding sides; and each bridge deck (3) is arranged on each cross beam (2) to constitute a truss bridge unit. The invention applies fiberglass reinforced plastics to the entire truss bridge and adopts flexible sectional type design, thus, the invention has the advantages of light weight, shock resistance, corrosion resistance, and convenient and quick transportation and assembly, and has wide application prospects in emergency rescue.

The invention discloses a comb energy harvester converting continuous displacement to impact load, which comprises a long comb and a short comb, wherein the long comb is a power generating element; the long comb is connected and arranged inside an insulated shell via a rail; the upper end of the insulated shell is provided with an insulated top cover; a through hole is arranged in the insulated top cover; a connection rod of the short comb passes through the through hole; when the short comb moves vertically, tooth tips of the long comb and the short comb collide mutually, the upper surface and the lower surface of the teeth of the long comb are coated with electrodes, the electrodes are connected with the input end of a conditioning circuit, and the output end of the conditioning circuit is connected with an energy storage module; and when the short comb moves vertically to generate continuous displacement, tooth tips of the long comb and the short comb collide mutually, a stress field exists inside teeth of the long comb due to effects of the impact load, polarization charges are thus generated, the polarization charges are transferred to the conditioning circuit via the electrodes, the charges are further stored in the energy storage module for being used by an energy consumption element. The sensor of the invention has the feature of converting continuous displacement to impact load, the power generating ability has designability, and the energy harvesting ability is greatly improved.

The invention provides a preparation method of a hollow sphere and aluminum alloy-based sound insulation material, the method is a simple and convenient method for preparing the lightweight high-performance sound insulation material. The cleaned stainless steel hollow ball and the aluminum alloy base body are placed into a die, the stainless steel hollow spheres are randomly and uniformly distributed in the aluminum alloy matrix, so as to obtain a hollow sphere and an aluminum alloy prefabricated body, putting the prefabricated body and the mold into a vacuum hot-pressing sintering furnace for hot-pressing sintering, carrying out hot-pressing sintering, taking out and carrying out T7 heat treatment. The hollow sphere and the aluminum alloy sound insulation material obtained by the methodcan achieve uniform distribution of the hollow sphere in the matrix, and the porosity in the sound insulation material can be controlled.

The invention provides a constant and fatigue stress testing device and a testing method. The testing device comprises a worktable, wherein a transparent framework is arranged on a tabletop of the worktable; the framework is provided with a clamping part for fixing a test piece; the clamping part is connected with an axial stress loading system; the axial stress loading system comprises a force sensor, a screw rod and a servo motor, which are arranged in the worktable in sequence; the force sensor is located between the clamping part and the screw rod; one end of the screw rod is connected with the force sensor and the other end of the screw rod is connected with an output end of the servo motor; the servo motor is connected with a control system. The testing method comprises the followingsteps: firstly, placing the testing device in a natural environment; then mounting the test piece on the clamping part of the testing device; applying constant stress and / or fatigue stress on the test piece, so as to realize a cooperative effect on the test piece by environment and dynamic loads. A damaging process on a structural part can be simulated and reappeared relatively well.

The invention relates to an integrated supercapacitor and a manufacturing method thereof. The technical problems that an existing capacitor is prone to leakage, the assembly process is complex, an electrode slice is difficult to degrade and recycle, and the performance of an electrode material is poor are solved. The integrated supercapacitor is formed by loading porous carbon active matter on bacterial cellulose gel electrolyte. The porous carbon active matter is adsorbed on the surface of fibers in the bacterial cellulose gel electrolyte to form an integrated stereoscopic net structure. The porous carbon active matter is one of or combination of more of active carbon, active carbon fiber, carbon aerogel, carbon nano-tube and biomass-based porous carbon materials. The mass of the porous carbon active matter accounts for 3-30% of the mass of the bacterial cellulose gel electrolyte. The manufacturing method can be widely used for the field of preparation of supercapacitors.

The invention provides a preparation method of a shape memory polymer and application thereof in 4D (four-dimensional) printing, and relates to the field of printing of intelligent materials, in particular to a preparation method of the shape memory polymer and application thereof. The shape memory polymer aims at solving the problems of the prior art that any shape cannot be printed according toactual requirements; the existing shape memory polymer has higher Tg, and cannot meet the requirement of low-powder driving and the biomedical demand. The preparation method comprises the following steps of performing copolymerization on two types of polymer monomers with good biocompatibility according to a certain ratio, so as to obtain a binary copolymer; dissolving into an organic solvent withlow boiling point and high volatilizing property, and treating by ultrasonic waves, so as to obtain a shape memory polymer solution. The prepared shape memory polymer is characterized in that the movement direction, movement speed and applied pressure of a three-dimensional movement platform along axes X, Y and Z are controlled by software, and then pressure is applied to a high-pressure glue dispensing needle cylinder with a miniature needle head by an air pump, so as to build a required three-dimensional structure. The shape memory polymer can be applied to the 4D printing.

The invention belongs to the field of lithium ion batteries, and discloses a nanoparticle-compounded ZIF-8 negative electrode material of high specific capacity bismuth as well as a preparation methodand application of the nanoparticle-compounded ZIF-8 negative electrode material. The environment in a methanol solution is utilized to enable zinc ions (Zn<2+>) in zinc nitrate hexahydrate to cooperate with a 2-methylimidazole ligand to form a ZIF-8 precursor, after the precursor is subjected to high-temperature carbonization treatment in an inert gas shielding atmosphere of nitrogen gas, Zn<2+>is reduced by pyrolytic carbon in the ZIF-8 to zinc elementary substance (Zn) to form Zn@NC, finally, Bi replaces Zn in situ through simple replacement reaction (Bi<3+> plus Zn arrow Bi plus Zn<2+>)so as to obtain Bi@NC finally. The obtained Bi@NC greatly improves the conductivity of Bi, is conducive to reduction of internal resistance and transmission of electrons, and improves the performanceof reaction kinetics; meanwhile, the volume expansion of Bi@NC in the charging and discharging processes is eased, and the reversible specific capacity and cyclic stability of Bi@NC are improved.

The invention discloses a separating preparation method of acetylene by absorbing pyrolysis gas with ionic liquid, which comprises the following steps of: absorbing heavy components in pyrolysis gas by heavy component absorbent, sequentially absorbing the pyrolysis gas under high pressure by taking the ionic liquid or the mixed solution consisting of the ionic liquid and organic solvent as absorbent and adopting an absorption-desorption method, and carrying out split reduction and warming desorption on the preheated absorption liquid, to desorb the light components, the acetylene and the high alkyne, so as to obtain the high-purity acetylene in a separation way. The method has the characteristics of being high in separation efficiency, less in solvent energy consumption, safe, environment-friendly, suitable for the industrial production, and the like.

The invention discloses a carbon fiber-reinforced (carbon-) silicon carbide base-ultra-high temperature ceramic base compound material and a production method thereof, and belongs to the technical field of ultra-high temperature ceramic base compound materials. According to the compound material, on the basis of the characters of components of carbon fibers, pyrolytic carbon (PyC), silicon carbide(SiC) and ultra-high temperature ceramics (UHTC), the components are combined to form four functional areas, namely a carbon fiber load-carrying skeleton area, a PyC interface layer area, a PyC-SiC load-bearing and anti-oxidation area and an ultra-high temperature anti-oxidation ablation-resistant area, and a CVI-PIP-CVD compound technology is adopted for producing the compound material with excellent mechanical performance and high-temperature-resistant and anti-oxidation performance.

The invention relates to a sectional type modularization rapid assembled and spliced bridge which comprises springboard bridge sections (1) and standard bridge sections (2). Each springboard bridge section (1) comprises a top board (11), a web (12), a bottom board (13), a pressure bearing interlocking end board (14) and a negative head and positive head connecting lug board (15). Each standard bridge section (2) comprises a top board (21), a web (22), a bottom board (23), a pressure bearing interlocking end board (24) and a negative head and positive head connecting lug board (25). The springboard bridge sections (1) and the standard bridge sections (2) are fixedly connected through the pressure bearing interlocking end boards (14), the negative head and positive head connecting lug boards (15), the pressure bearing interlocking end boards (24) and the negative head and positive head connecting lug boards (25). Every two standard bridge sections (2) are fixedly connected through the pressure bearing interlocking end boards (24) and the negative head and positive head connecting lug boards (25). Every two assembled and spliced bridges are fixedly connected through a transverse connecting arm (3). The sectional type modularization rapid assembled and spliced bridge has the advantages of being convenient to transport, flexible to assemble and splice, capable of being erected rapidly, and particularly suitable for releasing emergencies and disasters. The webs are made of corrugated steel, and the bottom boards are made of laminated composite materials.

The invention relates to an organic piezoelectric damping coating which comprises the following components in percentage by mass: 100 parts of resin base stock, 30-200 parts of piezoelectric ceramic powder, 0.5-5 parts of conductive carbon black and 0.5-50 parts of auxiliary agent. A preparation method of the organic piezoelectric damping coating comprises the following steps of: mixing and stirring the piezoelectric ceramic powder, the conductive carbon black and the resin base stock to obtain a mixture, carrying out ultrasonic dispersion on the mixture, then adding the auxiliary agent to ensure that the piezoelectric ceramic powder and the carbon black are uniformly distributed in the resin base stock to form a coating, and polarizing the prepared coating in a direct-current oil bath electric field to obtain the organic piezoelectric damping coating. The organic piezoelectric damping coating has favorable damping performance (tanDelta is more than or equal to 0.1) in a wide temperature range (-50-100DEG C) as a damping coating, can be widely applied to vibration damping and noise reduction of rooms, airplanes, ships, vehicles and various machinery and has remarkable vibration damping and noise reduction effects.

The invention discloses a bamboo-bunch composite wall plate and a detachable container house with the same. The wall plate is formed by one or more unit plates in a splicing mode. The unit plates are formed by the fact that bamboo-bunch composite plates are used as outer wall plates, bamboo laminated wood materials are used as inner wall plates, and the positions between the inner wall plates and the outer wall plates are filled with environment-protecting plant fiber foaming thermal insulation materials comprising foaming bamboo fibers and foaming wood fibers. Hollow bamboo tubes are embedded in the unit plates to be used as lighting and socket line tubes, and line paving is convenient. The wall plate can be hinged to a container frame, the using area of the house is expanded, vision aesthetic feeling is increased, and enough intensity is guaranteed. The detachable container house has the advantages of being convenient to convey and easy to assemble, house heat preservation performance, sound insulation performance, windproof performance and pollution-reducing environment-protecting performance are high, the attractiveness of a container body is increased, and the feeling of residing and relaxation is achieved.

The invention provides a marine dynamic umbilical cable tension bending combination fatigue test device easy to adjust. The device comprises a swing head device, movable frames, a test umbilical cable, a tensile loading device, a bending loading device and an artificial ground foundation. The test device applies constant tension loads to the umbilical cable through the movable frame and the tension loading device at one end, and applies circulating bending loads through the two three-direction movable frames, the swing head device and the bending loading device at the other end, accordingly the stress condition of the umbilical cable is simulated under the actual marine environment and floating motion, and fatigue service life of the dynamic umbilical cable in the actual service process is verified. A distributed modular design method is adopted to a tester, disassembly and assembly can be achieved according to of objects with different lengths and different apertures, and the device has the advantages of being convenient to install and operate and the like.

The invention belongs to the field of composite materials and particularly relates to a novel wave-transmission and thermal-insulation combined SiO2-Si3N4 composite material. The coefficient of thermal conductivity of the composite material is 0.08 to 0.1W / m.K, the dielectric constant epsilon is between 2.5 and 8, and the dielectric loss tg delta is 3*10<-3>. In the invention, sol-gel and freeze-drying combined technology is used for the first time to prepare porous ceramic, and the prepared Si3N4-based composite material has thermal-insulation and wave-transmission double effects and has a bright application prospect in fields of aerospace, military and national defense.

The invention discloses a method for making a dental model mold through 3D printing. The method comprises the steps that a three-dimensional tooth model is established through 3D calculation according to Dicom-format CT scanning fault data of patient's teeth, and then a three-dimensional model of the dental model mold is obtained through processing and output to a 3D printer in an appropriate format to obtain the dental model mold of a patient. The gypsum model of the patient's teeth and whole or single / multiple resin or ceramic false teeth and the like clinically used in oral medicine can be obtained by filling gypsum, tooth making resin, ceramic powder and other materials in the obtained mold. A traditional impression taking method is replaced by utilizing the dental model mold made through 3D printing, the discomfort of the patient is greatly decreased, and various failure phenomena in the traditional impression taking operation are decreased. In addition, the dependence on the operator's proficiency of the making quality of traditional dental products is effectively decreased while the designability of the dental model, false teeth and other dental products is enhanced through computer aided design, the clinic practicability is good, the cost is low, and the method is easy to popularize.

The invention relates to a method for preparing high-temperature resistant silicon carbide. The method is technically characterized by comprising the following steps of: uniformly mixing liquid polycarbosilane and organic metal salt, crosslinking and curing, performing ball-milling, cracking at the temperature of between 900 and 1,100 DEG C, and performing high-heat treatment at the temperature of between 1,600 and 1,850 DEG C to obtain the crystalline silicon carbide containing a trace amount of metal elements. A SiO2 protection membrane which is obtained by performing high-temperature oxidation on the synthesized silicon carbide is SiO2 solid solution containing a trace amount of metal elements. The trace amount of metal elements reduces the activity of SiO2, and increases the conversion temperature of active and passive oxidation of the silicon carbide, so that the use temperature of the silicon carbide is increased. Compared with the prior art, the method has the advantages that: by introducing a trace amount of metal elements into the silicon carbide, the use temperature of the silicon carbide is increased from 1,700 to 1,800-1,850 DEG C, and equipment used by the preparationprocess is simple, safe and reliable, is easy to control and contributes to large-scale production.

A preparation method of a micro bubble ultrasound contrast agent coated by a microcapsule relates to a preparation method of a micro bubble ultrasound contrast agent. The invention solves the problems of the instability of a micro bubble contrast agent and the disappearance of acoustic characteristic of a modified micro bubble. The preparation method of the micro bubble ultrasound contrast agent is that: absorbing, standing or centrifuging, cleaning, absorbing once again, standing or centrifuging and cleaning once more; finally the micro bubble ultrasound contrast agent is available. The invention has simple process, mild reaction condition, simple operation, good reproducibility, wild range of application and environment-friendliness, and is applicable to the surface modification of various ultrasound contrast agents and can be easily implemented.

A shock absorption and insulation supporting seat with a transverse elastoplasticity beam falling prevention device comprises the beam falling prevention device, an orbit and a bridge supporting seat which comprises an upper supporting seat plate, a middle supporting seat plate and a lower supporting seat plate which are sequentially connected and fixed. The orbit is a troughlike orbit and is connected to and fixed on the lower supporting seat plate along the direction of a bridge. The beam falling prevention device comprises a plurality of cantilever beams having the same strength, one end of the beam falling prevention device is connected to and fixed on the upper supporting seat plate, and the other end is inserted into the orbit. The middle supporting seat plate of the bridge supporting seat is a spherical supporting seat and also comprises a rotating spherical surface and a sliding surface, the rotating spherical surface is connected to and fixed on the spherical surface structure at the upper part of the middle supporting seat plate, and the sliding surface is connected to and fixed on the spherical surface structure at the lower part of the middle supporting seat plate. The beam falling prevention device has elastoplasticity, prevents a beam body from widthwise shedding from the supporting seat, has the capability for absorbing shock and dissipating energy along the transverse direction of the bridge, and has simple structure and convenient field installation.

The invention relates to a partially-enhanced X-cor foam core sandwich T-joint structure and a molding method. The partially-enhanced X-cor foam core sandwich T-joint structure comprises a skin foam core material (1) and a skin panel (2) covering the outer side of the skin foam core material (1), a web foam core material (3) and a web panel (4) covering the outer side of the web foam core material (3), wherein the the skin foam core material (1) and the web foam core material (3) are vertically connected to form a T-joint; the two sides of the T-joint are fixed through reinforcing layers (5); high-performance Z-pin (6) is planted into the foam core material so that the foam core material can be supported and the connection performance of the T-joint also can be improved. According to the partially-enhanced X-cor foam core sandwich T-joint structure, the connection intensity, rigidity and stability of the T-joint of a sandwich structure are remarkably improved, the technological process is simple and the production efficiency is high. Parameters including materials, angles, diameters, densities and the like of the planted Z-pin can be adjusted so that the performance of the T-joint is changed, and the partially-enhanced X-cor foam core sandwich T-joint structure has the advantage of the designability of a composite material.

The invention discloses a shape memory drug-loading micro-nano fiber membrane capable of intelligently controlling drug release and a preparation method thereof. Specifically, the method comprises thefollowing specific steps: S1, dissolving a shape memory polymer material and a drug into an organic solvent, and stirring to be uniformly mixed so as to obtain an electrostatic spinning solution; andS2, adding the electrostatic spinning solution into an injection pump, setting spinning parameters, and performing electrostatic spinning, thereby obtaining the shape memory drug-loading micro-nano fiber membrane. Compared with the prior art, the shape memory drug-loading micro-nano fiber membrane prepared by the method disclosed by the invention has designability, can realize preparation of micro-nano fiber membranes of multiple shape memory polymer materials and multiple drugs, is excellent in biocompatibility, biodegradable and convenient to use, and has beneficial effects of delaying thedrug release speed and controlling the drug release amount.

The invention discloses a low-frequency wideband nacreous layer bionic vibration isolation material. The low-frequency wideband nacreous layer bionic vibration isolation material is provided with a periodic structure consisting of a plurality of basic structure units, wherein each basic structure unit comprises a structure layer I, a connecting layer and a structure layer II which are sequentially connected along the height direction of the periodic structure; the connecting layer comprises four secondary connecting layers which are ranked in a 2*2 matrix and are ranked at equal intervals; each secondary connecting layer comprises a structure layer III as well as a connecting layer I and a connecting layer II which are respectively positioned on the upper and lower surfaces of the structure layer III; the structure layer I, the structure layer II and the structure layer III are made of a material I; the connecting layer I and the connecting layer II are made of a material II; the density of the material I is ymat, wherein ymat is greater than or equal to 1*10<3>kg / m<3> and smaller than or equal to 20*10<3>kg / m<3>; the elasticity modulus of the material II is xmat, wherein xmat is greater than or equal to 0.1Mpa and smaller than or equal to 100Mpa. The basic structure units have the characteristics of quite wide low-frequency band clearance and band clearance designability.

The invention relates to an illumination polymerization method of block copolymers of main chain type semi-fluorine alternating copolymers. The method comprises the following steps: under a protectiveatmosphere, a methacrylate monomer and a semi-fluorine alternating copolymer (AB)n macroinitiator are subjected to photo-controlled living radical polymerization in an organic solvent at 20-30 DEG Cunder the action of a photocatalyst, the polymerization reaction is carried out under the condition of illumination of 390 nm to 590 nm for at least half an hour, and the block copolymers of the mainchain type polyolefin, polyester or polyether semi-fluorine alternating copolymers are obtained. The polymerization method is carried out under the condition of visible light irradiation, the polymerization process has the characteristic of living radical polymerization, and the molecular weight distribution of the prepared polymers is relatively narrow.

The invention discloses an induction-heating-based structure thermal environment simulation method and apparatus. The method comprises: an appearance and dimension of a copper induction coil as well as a heating current amplitude and a heating current frequency are determined according to a material, an appearance, and a dimension of a tested structure as well as a temperature gradient of a service environment; the tested structure is placed in the induction coil, and an electric signal is applied to the induction coil based on the heating current amplitude and heating current frequency; and a temperature gradient and a strain field of the tested structure under the electromagnetic field effect are collected, and safety and reliability of the tested structure are determined based on the strain field. According to the invention, the tested structure is heated based on induction heating and thus utilization of a complex heating device can be avoided. Moreover, different thermal environments can be simulated by adjusting the magnetic field distribution and the skin depth, so that the electromagnetic field based on induction heating has high designability. The thermal environment simulation method and apparatus of the structure are simplified substantially; and the thermal environment simulation efficiency of the structure is improved.

The invention discloses a lightweight aggregate non-fine concrete and a preparation method thereof. The non-fine concrete is prepared from the following raw materials in proportion by mass: the proportion of cement, coal ash, lightweight aggregate, water to a water reducing agent is equal to 1: (0.00-0.1): (1.50-1.65): (0.25-0.35): (0.008-0.01). The lightweight aggregate non-fine concrete prepared in the invention combines the advantages of lightweight aggregate concrete and non-fine concrete, so that the lightweight aggregate non-fine concrete has the characteristics of light weight, high strength, heat preservation, fire resistance, frost resistance and low heat conductivity, particularly good water permeability and excellent earthquake resistance; and therefore, according to the concrete, the water permeability of a drainage body is enlarged in the construction of a urban drainage system, the noise is reduced, and the earthquake-proof and vibration-isolated system is more superior and has preferable designability.

The invention relates to a carbon fiber winding paving variable cross-section adhesive transmission shaft and a combined type mould thereof. The carbon fiber transmission shaft comprises a carbon fiber tube 1, an integrated joint 2 and the combined type mould. The two ends of the carbon fiber tube 1 are bonded on the integrated joint 2, a three-ball pin column at the other end of the integrated joint 2 is matched with a needle bearing 3 and a ball ring 4 to form constant-speed universal connection, and the needle bearing is limited by a clamp spring. A clamp 5 is in a cylindrical shape, and the mold and machining equipment are connected by the clamp 5. The combined type mould comprises a mould body 6 with the two ends being hexagon-like cross sections (including a transition section) and amould body 7 with the middle being circular cross section, and the combined type mould is positioned and matched by a groove and a boss on the mould and then connected with the cylindrical clamp 5. Acenter hole of a square block 8 is used for assisting demoulding. According to the carbon fiber winding paving variable cross-section adhesive transmission shaft and the combined type mould thereof,the design is reasonable, assembly and disassembly of the mould are convenient, the paving scheme is flexible, the problem that demoulding is difficult is solved, the material performance is sufficiently utilized, the transmission shaft and the combined type mould can adapt to different machining equipment and working conditions, the feasibility and operability are high, the weight is lowered by about 53% compared with steel, the inertia is reduced, and energy is saved.

The invention discloses a combined anti-impact structure of a rotor made from a composite material, as well as a preparation device and a preparation method thereof. The combined anti-impact structure comprises a metal thin-walled cylinder, an inner-side aramid fibre wrapped layer and an outer-side aramid fibre wrapped layer which are sequentially coated and fixed from the inside to the outside, wherein resin is infiltrated on the inner-side aramid fibre wrapped layer at intervals to enable the inner-side aramid fibre wrapped layer to be of a partially hollow structure, and the resin is uniformly infiltrated on the outer-side aramid fibre wrapped layer. According to the invention, on the basis of the existing structure of a rotor made from a composite material, the resin is infiltrated on the aramid fibre layers according to a certain rule, thus the partially hollow structure is formed; and due to the structure, on the basis of furthest reducing the weight of the structure, the thickness of the rotor is increased, the advantages of high toughness and high energy absorption performance of the aramid fibre layers are kept, and the anti-impact performance of the rotor made from the composite material is enhanced. Meanwhile, the combined anti-impact structure disclosed by the invention is capable of remarkably increasing the connection strength among the inner-side metal thin wall, the aramid fibre layers, and the outer-side composite material layer of the rotor made from the composite material, and high in fibre location performance.