33results about How to "Good material performance" patented technology

The invention relates to a method for preparing lithium nickel cobalt aluminum oxides serving as a high-capacity lithium ion battery positive electrode material, which comprises the following steps of: performing preoxidation roasting on nickel cobalt composite hydroxides or nickel cobalt composite carbonates by taking spherical nickel cobalt aluminum composite hydroxides or spherical nickel cobalt aluminum composite carbonates prepared by a coprecipitation method as a raw material to obtain uniform solid solution of high-valence state spherical nickel cobalt oxides in advance, so that all element are mixed in a molecular level; and mixing the preoxidized high-valence state nickel cobalt oxides and lithium salt uniformly, roasting at a high temperature under the atmosphere of oxygen, and cooling and crushing to obtain the lithium nickel cobalt aluminum oxide positive electrode material with a spherical structure. The prepared lithium nickel cobalt aluminum oxide positive electrode material has uniform granular distribution, discharging specific capacity of more than 185 mAh/g(4.3V vs Li), high circulating performance, a simple preparation process and low cost.

The invention discloses an electrospinning composite micro-nano fiber air filtration membrane and a preparing method thereof. The air filtration membrane is prepared through an electrospinning method, the composite micro-nano fiber of the air filtration membrane is formed by nano-silver particles, enteromorpha activated carbon/titanium dioxide composite particles and a water insoluble high-molecular polymer, wherein the enteromorpha activated carbon/titanium dioxide composite particles are prepared from electrospinning TiO2/high-molecular polymer/enteromorpha nano particles (enteromorpha nano dry powder) composite nano fiber membrane through high-temperature heat treatment, acid pickling and smashing. The air filtration membrane is simple in preparing method, excellent in performance and capable of effectively adsorbing and decomposing formaldehyde and other harmful substances while blocking and filtering dust pollutants and has a good antibacterial function and a good comprehensive protection effect.

The invention discloses a lithium ion battery cathode material with a variable slope concentration gradient doping structure and a synthesis method thereof. For solving the problems of capacity fadingand rate performance degradation which are brought by the conventional doping method, an element with a variable slope concentration gradient structure is doped, thereby obtaining the lithium ion battery cathode material with the concentration of a doping element continuously changed from the center of a material particle to the surface of the material particle; and change rate is gradually increased from inside to outside, so that the concentration of the doped element inside the material is slowly changed, the concentration of the doped element on the surface of the material is rapidly changed, and change of the concentration of the doped element is mainly concentrated on a surface layer. The method improves stability of the internal structure and the surface of the material while sideeffect is not introduced, the problems such as phase change of the material, volume change and dissolution of transition metal elements in a charge-discharge cycle process are reduced, cycle life of the material is greatly prolonged, and safety performance of the material is greatly improved.

The invention provides a multilayer negative-pressure closed drainage wound protecting device which comprises a porous foam cushion, a drainage tube and an oxygen-containing liquid flushing tube. One end of the drainage tube is positioned in the porous foam cushion, the porous foam cushion is a multilayer composite foam cushion and comprises a negative pressure conducting layer and a drainage protecting layer, the negative pressure conducting layer is a hydrophobic porous foam material layer, the drainage protecting layer is a hydrophilic porous foam material layer, and the drainage tube is disposed in the negative pressure conducting layer; the oxygen-containing flushing tube and the drainage tube enter the porous foam cushion side by side, the drainage tube penetrates the porous foam material layer to be positioned on the lower surface of the drainage protecting layer, the tail end of the drainage tube goes deeply into the drainage protecting layer for positioning, and small holes are distributed in the wall of the drainage tube. The drainage tube and a leading-in end of the oxygen-containing liquid flushing tube are fixed by a shared elastic sealing glue film floppy which comprises a disc and an elastic sealing glue film bonded with the disc and extending outwards, and a drainage leading-in tube orifice of the drainage tube and a flushing leading-in tube orifice of the oxygen-containing liquid flushing tube are arranged in the middle of the disc. A longitudinal breaking joint is formed at a drainage tube incoming end of the porous foam cushion, so that convenience is brought to overturning of the leading-in tube orifice.

The invention relates to a konjac glucomannan membrane haze-prevention mask. A mask body of the konjac glucomannan membrane haze-prevention mask is composed of four layers which specifically include the first layer, namely, the outmost layer, made of non-woven fabric, the second layer made of a konjac glucomannan porous membrane, the third layer made of a konjac glucomannan nanometer porous membrane, and the fourth layer, namely, the layer in contact with the face, made of non-woven fabric. With natural polymer polysaccharide, namely, konjac glucomannan, serving as the main ingredient, the konjac glucomannan membrane haze-prevention mask has various characteristics of hydrophilia, the thickening characteristic, stability and the like. In recent years, natural polymer compounds are widely applied to the material field, and many problem emerging on material safety are solved. The technology of preparing high-quality nanometer porous membranes with plant polysaccharide serving as the raw materials become a hot point in recent years; according to the method, the special gel property of konjac glucomannan is utilized, and the konjac glucomannan nanometer porous membrane is obtained through application of the electric field technology, and has great application potential in the material field. The konjac glucomannan membrane haze-prevention mask has higher indexes such adsorption performance, safety, raw material price and potential markets than those of other masks on the market, and can be selected by mass consumers as high-quality haze-prevention masks.

The invention discloses a nickel iron slag based polymer binding material and a preparation method thereof. The nickel iron slag based polymer binding material is prepared from the following components in parts by weight: 55-75 parts of nickel iron slag, 3-20 parts of flue gas desulfurization gypsum, 0.5-8 parts of slag Portland cement and 10-30 parts of pulverized fuel ash. The nickel iron slag based polymer binding material has high nickel iron slag dosage, enables nickel iron slag waste to be sufficiently utilized, and has good material performance and wide application range.

The invention relates to a processing method of a deep wall container, the method comprises the following steps: a die assembly is arranged and clamped on an injection mold machine, to lead the sprue mouth of the injection mold machine to being oppositely connected with the feeding hole of the die assembly, and to form a closed fluid channel; a solid granular or powder raw material is warmed up to a molten status, under the rotating and extruding function of a threaded rod, the raw material is pressed into the feeding hole of the die assembly through the sprue mouth; the raw material enters and fills up a cavity through the fluid channel; a product is formed through dwelling, cooling and solidifying, and then the product is taken out by opening the fluid channel. The invention is characterized in that the raw material is HDPE material with melt index less than 2.0g / 10 min; at least two feed points are arranged on the mouth edge of the container of the fluid channel, and a feeding hole is arranged on the inner wall bottom face of the container. The invention can lead the material with melt index less than 2.0g / 10 min which can not be used for injection mold and processing to be used for processing a plastic product, and enable the material performance to be good, the service life to being long, the mouth edge strength to be high, the impact strength to be high, and the sealing property to be good.

The invention discloses a method for preparing a capacitor electrode material non-stoichiometric lanthanum manganate (LaMnx+/-1O3). The method comprises the following steps: mixing nitrate of manganese and lanthanum according to a certain ratio, and stirring to obtain sol; drying to obtain dried gel; and finally, performing calcination treatment, thereby obtaining the non-stoichiometric LaMnx+/-1O3. The product disclosed by the invention is of a porous structure and has a large specific surface area, and energy density is improved; and the LaMnx+/-1O3 has relatively high oxygen vacancy concentration, and the transport speed of ions and electrons is improved, so that the power density is enhanced. Compared with stoichiometric lanthanum manganate (LaMnO3), the LaMnx+/-1O3 has high capacity and cycling stability when serving as a super-capacitor electrode material. When the scanning rate is 0.5A/g, the specific capacitance of LaMn1.1O3 is 508F/g. When the current density is 3A/g, the capacity is kept at 75% due to 1000-time cycle, and the specific capacitance is finally stabilized at about 250F/g.

The invention provides an ultrahigh-Bs (saturation magnetic flux density) low-loss MnZn powder ferrite material and a making method thereof, the material has an ultrahigh Bs and low power loss, and the material is prepared from as raw materials comprising 75wt%-79wt% of Fe2O3, 10wt% -14wt% of Mn3O4 and 10wt%-14wt% of ZnO by blending, first grinding, presintering, second grinding, pelletizing, molding, sintering and other processes. The innovation of the material is to eliminate the technical prejudice, and by adding of the quantitative component Fe2O3 in the second grinding, the power loss is significantly reduced, and at the same time, the ultrahigh Bs and the low loss are realized.

The invention relates to a preparation method of a Mg-doped lithium nickel cobalt aluminum oxide positive electrode material. The method comprises the following steps: 1, preparing a Mg-doped spherical nickel cobalt aluminum hydroxide precursor through a coprecipitation technology; and 2, individually carrying out preoxidation calcining treatment on the Mg-doped spherical nickel cobalt aluminum hydroxide precursor to obtain a high-valence spherical Mg-doped nickel cobalt aluminum oxide uniform solid solution, mixing the a high-valence Mg-doped nickel cobalt aluminum oxide with a lithium source, carrying out high temperature calcination in oxygen atmosphere, cooling the obtained calcination product, and crushing the cooled calcination product to obtain the Mg-doped lithium nickel cobalt aluminum oxide positive electrode material. The lithium nickel cobalt aluminum oxide positive electrode material prepared through the method has the characteristics of high energy density, low cost, simple preparation technology, and easiness in realization of industrialization, and has greatly better battery specific capacity, rate and other cell performances than Mg-free materials.

The invention relates to a lead-free antimony-nickel-brass alloy comprising the components of, by weight, 59-64% of copper (Cu), 0.01-0.25% of antimony (Sb), 0.1-1.5% of nickel (Ni), 0.01-0.15% of aluminum (Al), 0.1-0.8% of tin (Sn), 0.01-0.45% of magnesium (Mg), 0.05-0.5% of zirconium (Zr), and balance of zinc (Zn) and unavoidable impurities, wherein a total amount of copper and zinc in the lead-free antimony-nickel-brass alloy is higher than 96.2wt%. The lead-free antimony-nickel-brass alloy has excellent material performance, good toughness and processability, improved strength, and improve corrosion resistance.

The invention discloses a tunnel lining construction method which includes the following steps: constructing full-fracture-surface steel arches along the longitudinal surrounding rock excavation face of a tunnel at intervals, spraying two layers of low-carbon type fiber concrete layers at the position, between adjacent steel arches, of the surrounding rock excavation face at a high speed with a wet spraying machine depending on air pressure, and forming a tunnel lining structure until the tunnel is through. The tunnel lining construction method is simple in construction process and safe in construction procedure, the sprayed concrete rebound rate can be lowered, the spraying performance is improved, the energy consumption is reduced, and the formed tunnel lining structure is high in toughness, good in anti-permeability, good in durability and particularly suitable for weak surrounding rock tunnel supports constructed with the mining method.

The invention discloses thermoplastic polyurethane. The thermoplastic polyurethane is characterized by being prepared from the following components in parts by weight: 60-65 parts of isocyanate, 10-25parts of dihydric alcohol, 10-25 parts of triatomic alcohol, 0.0005 part of a catalyst, 0.5 part of antioxidant and 1 part of an ultraviolet absorbent. According to the thermoplastic polyurethane, the synthesizing method is simple, the preparation cycle is short, the raw materials have low cost and are easily available, the thermoplastic polyurethane can endure deep sea pressure, have corrosion resistance and excellent environmental resistance, and the structure of the material can meet the safety standard of observation windows of deep sea submersible vehicles.

The invention relates to a preparation method of bis-salicylaldehyde o-phenylenediamine modified resin for uranium extraction from a salt lake. The preparation method comprises the following steps: step I, synthesizing styrene-divinylbenzene copolymer cross-linked microspheres; step II, synthesizing chloromethylation copolymer cross-linked microspheres; step III, performing the functionalized reaction of ethylenediamine of the chloromethylation copolymer cross-linked microspheres; and step IV, synthesizing the bis-salicylaldehyde o-phenylenediamine modified resin. According to the preparationmethod of the chelated resin for the uranium extraction from the salt lake, the bis-salicylaldehyde o-phenylenediamine modified resin for the uranium extraction from the salt lake is successively prepared by utilizing chemical modification reaction, the preparation method is simple, and the material performance is good.

The invention relates to high-entropy zirconate ceramics and a production method thereof. The high-entropy zirconate ceramics are of a single-phase structure, and a chemical formula of the high-entropy zirconate ceramics is (CaSrBa)ZrO3. According to the production method of the high-entropy zirconate ceramics, firstly, through planetary ball milling, powder of CaZrO3, SrZrO3 and BaZrO3 is subjected to wet milling and mixing, then an evenly-mixed raw material is fully dried in a rotary evaporator, and finally, the evenly-mixed raw material is sintered respectively to achieve production of high-entropy ceramic blocks. According to the high-entropy zirconate ceramics and the production method thereof, the high-entropy zirconate ceramics (CaSrBa)ZrO3 are synthesized successfully for the firsttime, and it is characterized by multiple technologies that the synthesized high-entropy zirconate ceramics (CaSrBa)ZrO3 have high density and hardness and heat conductivity, which is lower than those of the three raw materials.

The invention discloses a method for improving high-temperature stability of metal twin crystals. The method comprises the steps that nanoporous metal is prepared firstly through a dealloying method,or an electrochemical method and a template method, then the nanoporous metal is placed in a methane atmosphere, so that the surface of the nanoporous metal is covered with a layer of amorphous carbon, and then a heating reaction is conducted. At the high temperature, the amorphous carbon is catalyzed into graphene, the part of nanoporous metal is molten and evaporated, and thus nano droplets bound by the graphene are generated. The temperature is decreased, the droplets are solidified, the twin crystals are generated in the droplets, and thus the nano metal twin crystals bound by the grapheneare formed. The nanoporous metal comprises nanoporous copper, nanoporous gold, nanoporous silver and nanoporous palladium. A preparation technology is simple, universality is high, the surfaces of the nano metal twin crystals are bound through the graphene, the high-temperature stability of the nano metal twin crystals can be greatly improved, good material performance is kept, and the application range of the metal twin crystals is expected to be expanded.

The invention belongs to the technical field of oral clinic, and discloses a synthesis and detection method of a novel tertiary amine modified antibacterial pit and fissure sealing agent. According to the method, a pit and fissure sealing agent is prepared, the dosage relation between DMAEM and Clinpro is screened according to the photocuring depth of a modified resin pit and fissure sealing agent material, and the optimal dosage range is screened through experiments; on the basis, a performance detection sample is selected, and a cytotoxicity experiment, surface roughness detection and microhardness detection are performed; the influence of the DMAEM on the material performance and the anti-caries performance of the pit and fissure sealing agent is investigated by taking a plurality of performances such as cytotoxicity, hardness, surface roughness, antibacterial performance and the like as indexes; and a saliva biofilm is cultured in vitro, the modified resin sealing agent is subjected to biological aging, antibiosis before and after biological aging is detected, and the micro-leakage condition of the pit and fissure sealing agent subjected to biological aging is detected. According to the invention, the sealing agent has a long-acting and sustainable antibacterial effect, and overcomes the defects of the existing pit and fissure sealing agent.

The invention discloses a high temperature-resistant ethylene-acrylate rubber formula. The formula comprises the following raw materials in parts by weight: 0-70 parts of VAMAC IP, 0-30 parts of VAMAC GXF, 30-100 parts of ULTRA LS 3110, 1-2 parts of 18 D, 0.5-2 parts of SA, 1-2 parts of VAM, 1-2 parts of an antioxidant 445, 2-3 parts of WS180, 30-50 parts of carbon black N550, 0-50 parts of silicon powder 750, 0-60 parts of carbon black N990, 5-10 parts of TP759, 1.2-1.8 parts of DK-1, 0-1 part of DPG, and 0-2 parts of ACT55. By employing the above technical scheme, the formula has the beneficial effect that the high temperature-resistant rubber formula has good material performance, tensile strength is greater than 10.0 MPa, and the elongation at break is greater than 200%. The technical operation such as rubber compound injection and extrusion is stable, and the requirement for high temperature resistance condition of the rubber material by the product can be satisfied.

The invention discloses a control cable of an efficient intrinsic safety detecting instrument. The control cable comprises a plurality of conductor insulation units, wherein each conductor insulation unit comprises a conductor, an insulation layer, a subentry shielding layer and a wrapping layer, the insulation layer is extruded on the conductor, the outer side of the insulation layer is sequentially provided with the subentry shielding layer and the wrapping layer, a plurality of drainage wires are arranged between the insulation layer and the subentry shielding layer, a packing layer is arranged between the conductor insulation units, and the outer side of the packing layer is sequentially provided with a wrapping tape layer, a shielding layer and an outer sheath layer. The material of the insulation layers of the control cable has excellent performance and also has characteristics of low smoke, no toxicity, no halogen and flame retardance; meanwhile, the tensile strength of the material is high, therefore, the material also has excellent anti-electromagnetic interference performance when the material bears mechanical external force; in addition, the material is suitable for the insulation layers of various wires and cables. Moreover, the control cable has excellent flame retarding performance and intrinsic safety performance.

The invention provides a suspension buffer dust cover and a preparation method thereof. The suspension buffer dust cover comprises, by weight, the natural rubber 20 parts of, 80 parts of ethylene propylene terpolymer, 50-90 parts of carbon black, 2-10 parts of a lubricant, 2-10 parts of fatty acid, 4.5-8.5 parts of a surfactant, 0.6-1 part of peroxide, 0.5-1 part of sulfur, 2-4 parts of a promoter and 3-7 parts of an antioxidant. The suspension buffer dust cover of the invention has the advantages of good elasticity, good mechanical strength, small permanent deformation, wear resistance and excellent heat resistance. A preparation method is as below: respectively mixing natural rubber and ethylene propylene terpolymer, and blending the two, so as to achieve co-vulcanization of rubber compound with a composite vulcanization system containing sulfur, peroxide and promoter. The dust cover parts of the prepared suspension buffer dust cover have good heat resistance and ozone resistance, and a buffer spring pad part also has good shock absorption performance and anti-fatigue performance, and solves the defects of integrated structure of the spring pad and the dust cover.

The invention provides an automobile blind zone sensing system. The automobile blind zone sensing system acquires running relevant element information of motion status information, first running environment information, second running environment information, visibility value and the like of an automobile respectively through an automobile motion status detection module, a first running environment detection module, a second running environment detection module and a weather environment detection module, confirms running blind zone distribution status of the automobile under current running status according to the running relevant element information, and can further perform real-time dynamic prompting for a driver according to the running blind zone distribution status, thereby guaranteeing that the driver can comprehensively master running view in the running process and improving running safety of the automobile.

The invention discloses a divalent europium sulfide near-infrared scintillator, the divalent europium sulfide near-infrared scintillator is a crystal material, the chemical formula of the divalent europium sulfide near-infrared scintillator is Eu3SiS4Te, the cell parameters of the divalent europium sulfide near-infrared scintillator are alpha = beta = gamma = 90 degrees, and the space group of the divalent europium sulfide near-infrared scintillator is Cmcm. The invention also provides a preparation method of the divalent europium sulfide near-infrared scintillator, which comprises the following steps: mixing and grinding europium oxide, silicon powder, sulfur powder, boron powder, tellurium powder and excessive fluxing agent, sealing in vacuum, and calcining at 850-950 DEG C to enable the raw materials to react; and after the reaction is finished, a product Eu3SiS4Te is obtained. The divalent europium sulfide near-infrared scintillator provided by the invention has excellent radiation resistance and humidity stability.

The invention discloses a shrinkage-expansion nozzle and a preparation method thereof and additive manufacturing equipment and method.The preparation method of the shrinkage-expansion nozzle comprises the steps that the required shrinkage-expansion nozzle is manufactured on a rotating shaft base body in an additive mode through a cold spraying method, and the pressure adopted for cold spraying ranges from 2 MPa to 5 MPa; and removing the rotating shaft substrate by adopting a physical method or a chemical method. The shrinkage-expansion nozzle with the complex inner wall shape is manufactured on the surface of the rotating shaft base body in a cold spraying mode, then the rotating shaft base body is removed, the whole process is simple, the shrinkage-expansion nozzle with the compact structure can be generated under the action of large pressure through additive manufacturing on the surface of the rotating shaft base body, and the shrinkage-expansion nozzle with the compact structure is formed. The material is good in performance, and the strength, hardness, corrosion resistance and the like are improved.

The invention discloses a composition for a heart stent. The composition for the heart stent comprises the following components in percentages by mass: 0.5-1% of starch, 0.1-0.5% of celluloses, 0.5-1% of alginic acid, 1-2% of chitosan, and the rest of collagen. The heart stent prepared from the composition can be degraded completely.

The invention provides a method for preparing high-performance asphalt-based carbon fiber through rapid pre-oxidation, which comprises the following steps: (1) putting an asphalt-based carbon fiber precursor into a reaction cavity, and introducing mixed gas into the reaction cavity to achieve the purpose of pressurization and keep the pressure constant; (2) carrying out two-stage heating on the interior of the reaction cavity through a heating device to obtain pre-oxidized asphalt-based carbon fibers; and (3) vacuumizing the reaction cavity, introducing inert gas to ensure normal pressure, and then carbonizing and graphitizing the pre-oxidized asphalt-based carbon fiber. According to the method, the diffusion rate of oxygen in the asphalt fiber is obviously improved in a pressurization mode, so that rapid homogeneous pre-oxidation of the asphalt fiber is realized, the pre-oxidation period is obviously shortened, meanwhile, the material performance is improved, the material defects are reduced, and the production cost is reduced.

The invention discloses a mounting structure of an outer wall rock wool heat preservation integrated plate of a high-rise housing and a construction method. The rock wool heat preservation integratedplate is embedded in an aluminum alloy grating and bonded on a mounting wall, the aluminum alloy grating is composed of multiple aluminum alloy square tubes horizontally fixed to the mounting wall andparallel to each other, the position, between two adjacent aluminum alloy square tubes, of the rock wool heat preservation integrated plate is supported by the aluminum alloy square tube on the lower portion, the construction method comprises the steps of aluminum alloy grating detailed design, straight hanging, line snapping, rear embedded part mounting, aluminum alloy square tube mounting, pointing, mounting wall treatment, rock wool heat preservation integrated plate deepened figure making, wall payoff, rock wool heat preservation integrated plate cutting and anchorage part mounting, bonding mortar preparing, rock wool heat preservation integrated plate bonding, gluing, and protection film removing. Through the aluminum alloy grating, the mounting wall is divided, vertical flatness ofthe rock wool heat preservation integrated plate is ensured conveniently, the rock wool heat preservation integrated plate is embedded in the aluminum alloy grating, and a safety quality accident ofintegrated plate whole falling is avoided.

The invention relates to a through type stepping linear motor. The stepping linear motor includes a screw rod, a rotor shaft, an external nut and a connection plate. The screw rod performs axial motion along the rotor shaft; the connection plate is axially fixed to the rotor shaft and rotates synchronously with the rotor shaft; and the external nut is axially fixed to the rotor shaft via the connection plate and rotates synchronously with the rotor shaft. Compared with the prior art, the through type stepping linear motor has advantages of improving the overall performance, and the like.

The invention relates to the field of wire harness sheathing materials, and particularly discloses a high-and-low-temperature-resistant wire harness sheathing material of a new energy automobile. Thehigh-and-low-temperature-resistant wire harness sheathing material of the new energy automobile comprises the following components: 30-45 parts of thermosetting liquid polyimide pure resin, 20-35 parts of EVA resin, 10-15 parts of polytetrafluoroethylene, 4-6 parts of a temperature-resistant compound modifying agent, 6-10 parts of ultra-fine activated calcium carbonate, 3-5 parts of diisononyl phthalate, 2-4 parts of a lubricating agent and 0.5-0.9 part of an antioxidant. The thermosetting liquid polyimide pure resin, the EVA resin and the like are used as matrixes, the matrixes have properties of weather resistance, temperature resistance, wear resistance, corrosion resistance and the like, and then are compounded with the temperature-resistant compound modifying agent and the like, and thus, the properties (such as wear resistance, impact resistance, weather resistance, temperature resistance and corrosion resistance) of the prepared material are excellent.

The invention relates to a PLZT micron seed crystal, a preparation method thereof and application of the PLZT micron seed crystal in induction of ceramic growth. The general formula of the lead lanthanum zirconate titanate micron seed crystal is Pb<1-x>La<x>(Zr<y>Ti<1-y>)<1-x/4>O<3>, x is more than or equal to 0.040 and less than or equal to 0.100, and y is more than 0.65 and less than or equal to 0.75, and the particle size of the lead lanthanum zirconate titanate micron seed crystal is micron-sized.

A prefabricated column and a prefabricated beam are connected, and a friction energy dissipation assembly is arranged between the prefabricated column and the prefabricated beam; the friction energy dissipation assembly comprises a gear arm and a gear composite part, the gear composite part is installed on at least one of the prefabricated column and the prefabricated beam, the gear composite part is meshed with a rack, and the rack is arranged on the gear arm; a limiting groove is formed in the gear arm, and a limiting bolt pin with a fixed position is arranged in the limiting groove; the metal energy dissipation assembly achieves energy dissipation through beam-column joint deformation and metal energy dissipation sheet extrusion, the composite energy dissipation benefit of combining friction energy dissipation and metal energy dissipation can be achieved, earthquake energy is dissipated, a component is protected against damage, and the composite energy dissipation performance can be recovered after an earthquake. And the self-resetting capability can be realized by applying pre-stress by combining a pre-stress assembly, and the earthquake isolation effect can be achieved through the rubber shock isolation pad.