805 results about "Mechanical stability" patented technology

The invention relates to a dynamic-covalent hybrid cross-linked hydrogel material as well as a preparation method and application thereof. The preparation method comprises the following steps: dissolving a component A-phenylboronic acid modified polymer derivative in a biocompatible medium to obtain a solution A; dissolving a component B, namely a macromolecular derivative containing a vicinal diol group, into a biocompatible medium to obtain a solution B; dissolving a component C-double bond group modified polymer derivative in a biocompatible medium to obtain a solution C; and mixing the solution A, the solution B and the solution C with certain concentrations for a certain time, and performing illumination under a photoinitiator for a certain time to obtain the dynamic-covalent hybrid cross-linked hydrogel material. Compared with single dynamic bond crosslinking or covalent bond crosslinking, the prepared hydrogel material has machinability and mechanical stability; the hydrogel material has plasticity, shear thinning, self-repairing property and the like in the early stage of crosslinking; enough mechanical strength and long-term stability are realized in the later stage of crosslinking.

The invention discloses an anti-aging water-stop belt and a preparation method and application thereof, and relates to the technical field of water-stop belts. The invention relates to an anti-aging water-stop belt which is prepared from the following raw materials in parts by mass: 40-60 parts of chloroprene rubber, 10-20 parts of natural rubber, 10-20 parts of ethylene propylene diene monomer, 15-30 parts of carbon black, 5-15 parts of white carbon black, 5-15 parts of a plasticizer, 0.5-2 parts of sulfur, 0.5-1.5 parts of an accelerant, 1-2 parts of an anti-aging ultraviolet light absorber, 5-15 parts of aluminum hydroxide, 1-3 parts of stearic acid and 3-8 parts of zinc oxide. The obtained water-stop belt has excellent ultraviolet aging resistance, ozone resistance and chemical corrosion resistance while keeping high elasticity, the mechanical stability of the water-stop belt is remarkably improved compared with that of a traditional product, the water-stop belt is suitable for joint sealing in harsh environments such as bridges, tunnels and water conservancy projects, and the waterproof service life of engineering structures can be effectively prolonged.

The invention provides a sphere-like silicon-carbon negative electrode material and a preparation method and application thereof, and particularly relates to the technical field of negative electrode materials, the negative electrode material comprises a sphere-like porous carbon skeleton, silicon nanoparticles distributed in the sphere-like porous carbon skeleton, and an amorphous carbon layer coating the surface of the sphere-like porous carbon skeleton, the particle appearance of the sphere-like porous carbon skeleton is of a round irregular or asymmetric polyhedral structure and comprises one or more of a potato shape, an ellipse shape, an olive shape, a long strip shape and a pomegranate shape, the particle of the sphere-like porous carbon skeleton is provided with a plurality of asymmetric faces, fillets are formed between the faces, and the radius of the fillets does not exceed 20 microns. The problem of structural damage of the material under the action of external force such as rolling can be effectively relieved, good mechanical stability is kept, excellent bonding performance can be achieved in the electrode coating process, the ion transmission path of the material is improved, and the electronic conductivity and the lithium ion diffusion performance are improved.

Technologies for components embedded in a substrate core are disclosed. In one embodiment, power components such as deep trench capacitors and multi-layer ceramic capacitors (MLCCs) are disposed in a cavity defined in a substrate core for a circuit board of an integrated circuit package, such as a processor. The power components are stacked on top of each other, allowing for the stack of power components to match the height of the substrate core, even when the height of the individual power components is less than the height of the substrate core. Configuring the power components in this manner can provide mechanical stability to the power components and substrate core and provide power to a semiconductor die mounted on the circuit board.

The invention discloses a hydraulic mechanism for a water-cooled magnet structure with high mechanical stability. The hydraulic mechanism comprises a cylinder body, a piston, a check ring, a pressure equalizing pad, a limiting block, a first force transmission check ring, a first anti-rotation pin, a second force transmission check ring, a second anti-rotation pin, a first force transmission column and a second force transmission column. The water-cooled magnet has the advantages that axial stress application can be carried out on the magnet coil assembly, the pressing force on the magnet coil assembly is improved, the problems of tension fracture and damage caused by coil stress overrun due to overlarge radial expansion electromagnetic force of a magnet coil bit piece and an insulating piece are solved, and the high mechanical stability of the water-cooled magnet is improved.

An anchor for components of a lightning protection system may rely on a bonding agent, such as an adhesive, needing time for curing, drying, or otherwise setting (increasing in adhesion, strength, mechanical stability, or any combination thereof) by remaining in place while setting. The anchor may be suspended by a lip extending horizontally past an edge (plane of intersection of two planar surfaces) where a base plate is adhered to a vertical surface and the lip rests, registers in translation, and squares in rotation against a horizontal surface sharing an edge or fold (corner, bend) with the vertical surface. Once set sufficiently, the adhesive supports loads in shear (along plane of adhesion) and tension (perpendicular to plane of adhesion) imposed by brackets holding a cable, point, or both at each base plate.

The invention belongs to the technical field of metal ceramic, and particularly relates to a high-toughness metal ceramic particle and a preparation method thereof.The particle is characterized in that ceramic micro powder, surface modified ceramic powder and rare earth element carbonitride form a composite hard phase, and the composite hard phase is dispersed in a metal matrix composed of multiple metal elements; and synergistic regulation and control components are introduced to optimize interface bonding and tissue uniformity. Particles are subjected to a step-by-step heat treatment and isostatic pressing forming process, and a stable structure is formed by controlling the oxygen content and the sintering atmosphere. The obtained material has high bending strength, high fracture toughness and good thermal shock resistance, is suitable for the application field of wear resistance and crack resistance under extreme working conditions, and has tissue compactness and mechanical stability.

The invention relates to the technical field of scale inhibition materials, in particular to a slowly-dissolved micro-nano dispersion scale inhibition material and a preparation method thereof. The composite material comprises a four-layer structure, wherein a porous hydroxyapatite core anchors DTPMP through phosphate radical vacancy to inhibit burst release; sulfonated polyetheretherketone and a cross-linking agent are compounded to form an ion selective controlled release layer, and the diffusion rate of the scale inhibitor is regulated and controlled; photo-thermal conversion graphene quantum dots are embedded in a temperature-sensitive hydrogel shell, and dynamic release is triggered through temperature or Ca < 2 + > concentration; and the corrosion resistance and the mechanical stability are enhanced by the atomic layer deposited ceramic layer and the epoxy resin packaging layer. By constructing a four-layer composite slow-release system, long-acting scale inhibition, extreme tolerance and dynamic response are achieved, the technical problems that a traditional scale inhibition material is high in burst release rate, poor in weather resistance and delayed in release are solved, the water treatment cost per ton is low, the RO membrane service life is long, and a full-period efficient scale inhibition solution is provided for a complex industrial water system.

The invention provides conductive carbon paste as well as a preparation method and application thereof, and belongs to the technical field of conductive materials. The carbon black, the graphene and the carbon nanotubes are utilized to form a self-supported three-dimensional conductive network, so that the graphene / carbon nanotube composite material has excellent conductivity. In addition, both the graphene and the carbon nanotubes have excellent mechanical properties, flexibility and chemical stability, so that the mechanical stability of a conductive layer after the conductive carbon paste is cured can be improved. And the high-temperature-resistant binder can improve the stability of the conductive layer after the conductive carbon paste is cured. The flexibility reinforcing agent can improve the flexibility of the conductive carbon paste. The silane coupling agent can play a bridge role between the carbon material and the high-temperature-resistant binder, so that the interface affinity between the carbon nanomaterial and the high-temperature-resistant binder is enhanced; the silane coupling agent effectively inhibits agglomeration of the graphene and the carbon nanotubes in a chemical adsorption or physical coating mode. The result of the embodiment shows that the conductive layer formed by curing the conductive carbon paste provided by the invention has excellent conductive stability and mechanical stability.

The invention relates to the technical field of photovoltaic panels, in particular to a wind-resistant damping mechanism of a photovoltaic panel, and solves the problems that when the photovoltaic panel in the prior art is used, an effective wind-resistant damping effect is lacked, so that shaking of the photovoltaic panel and a photovoltaic support in strong wind weather cannot be effectively inhibited, and the photovoltaic panel is damaged. And the normal operation of the photovoltaic system is severely influenced. A wind-resistant damping mechanism of a photovoltaic panel comprises a frame body, a top plate is arranged at the top of the frame body, connecting plates are slidably connected to the two sides of the bottom of the top plate, and the bottoms of the two connecting plates are fixedly connected with the top of the frame body. The problem that a traditional fixing support cannot cope with sudden wind disasters is effectively relieved, the photovoltaic panel can obtain preliminary buffering protection when encountering strong wind, the problem of frame deformation or glass damage caused by instant impact is avoided, and the mechanical stability of a system is improved.

The invention discloses a novel internally-inserted water-cooled magnet container assembly for a hybrid magnet with high mechanical stability, which comprises an upper cylinder component, a container end cover, a hydraulic machine component, a central tube component, an inner support component, a middle cylinder component, a lower cylinder component, an electric connection component and a first conductive flexible connector, and a magnet coil assembly comprises a plurality of radially-sleeved coils; the hydraulic machine assembly comprises a cylinder body, a piston, a check ring, a pressure equalizing pad, a limiting block, a first force transmission check ring, a first anti-rotation pin, a second force transmission check ring, a second anti-rotation pin, a first force transmission column and a second force transmission column. The device has the advantages that axial force application can be performed on the magnet coil assembly, the pressing force on the magnet coil assembly is increased, the problems of tension fracture and damage caused by coil stress overrun due to overlarge radial expansion electromagnetic force of a magnet coil bit piece and an insulating piece are solved, the dismounting and maintenance process of the mixed internally-inserted water-cooled magnet device is simple and rapid, and the efficiency is high. And the dismounting efficiency is improved.

The invention relates to a biaxially oriented polypropylene composite film for a capacitor and a preparation method of the biaxially oriented polypropylene composite film. The biaxially oriented polypropylene composite film is of an ABA three-layer structure; wherein the layer A is prepared from the following raw materials: PP, a nucleating agent and a composite filler of MAH-g-PP and nanoparticles; the layer B is prepared from the following raw materials: PET master batch, modified silicon dioxide and a brush polymer. According to the preparation method, the three-layer structure composite film is prepared, the layers are firmly combined through covalent bonds, hydrogen-bond interaction and the like, and the interlayer peel strength is remarkably improved; a nano particle filler with a high dielectric constant is introduced into the A-layer structure, so that the dielectric strength of the film is improved, and meanwhile, the film has relatively high anti-breakdown strength; and the layer B effectively improves the mechanical stability of the film material, and has higher mechanical property and material rigidity compared with the traditional PP film.

The invention relates to the technical field of cement-based materials, in particular to a preparation method of a special ultra-high-strength cement-based grouting material for wind power generation, which comprises the following steps of: performing simulation analysis on stress and bonding conditions in a contact area of cement particles and aggregate particles by quantifying the proportion of cement, aggregate and an additive and adopting a discrete element method; gap distribution among particles is adjusted in combination with a genetic algorithm, mechanical behaviors of the particles are refined through application of a discrete element method, the problem of local stress concentration possibly caused by particle arrangement randomness is avoided, microcosmic stress distribution data are continuously mapped through a radial basis function interpolation method, and the stability of the microcosmic stress distribution data is improved. A macroscopic stress distribution model is established by adopting finite element analysis, data support is provided for the crack resistance and bearing capacity design of the material, the comprehensive performance of the cement-based grouting material in the aspects of fatigue resistance, deformation resistance, environmental erosion resistance and the like is improved by optimizing the synergistic effect of a microstructure and macroscopic stress, and the comprehensive performance of the cement-based grouting material in the aspects of fatigue resistance, deformation resistance, environmental erosion resistance and the like is improved. The mechanical stability and the long-term durability are ensured.

The invention belongs to the field of high polymer materials, and discloses a double-trigger programmable degradable PHA composition and a preparation method thereof. A cured film structure formed by the composition sequentially comprises an outer protective layer, a trigger layer and an inner functional layer from outside to inside, wherein the outer protective layer takes polyhydroxyalkanoate as a base material, a reversible cross-linked network is introduced into the outer protective layer, the trigger layer is provided with humidity and ion double-trigger microcapsules, and the inner functional layer is used for bearing functional auxiliaries. The cured film can maintain low permeability and mechanical stability before application. After application, under the synergistic effect of specific moisture and ions, the trigger layer is activated, so that the cured film is subjected to step-type improvement of moisture permeability in a preset time window, and a through hole is formed. And finally, integral disintegration is realized through physical structure failure. The technology can be applied to the fields of seed coating and the like, the activity of a biological base material can be ensured by adopting a low-temperature process with the temperature lower than 50 DEG C, and unification of stable protection before application and on-demand disintegration after application is achieved.

The invention relates to the technical field of photoelectric co-packaging, in particular to an optical chip optical fiber coupling packaging framework and process for photoelectric co-packaging. In the optical chip and adapter plate vertical mounting system, n + 2 continuous V-shaped grooves are etched in the position, corresponding to an end face coupler, of the bottom of an adapter plate, the two V-shaped grooves in the two sides are used for arranging limiting optical fibers, the n V-shaped grooves in the middle are used for containing and guiding optical fibers, and n is larger than or equal to 1; passive alignment of coupling of the optical fiber and the optical chip, high process compatibility and high mechanical stability are achieved. According to the invention, the optical chip does not need to be installed at the edge of the adapter plate of the photoelectric co-packaging system any more, the feasibility of vertical stacking is greatly expanded, a solution is provided for the installation of the optical bridge chip in the three-dimensional stacked photoelectric co-packaging system, and a more compact structure becomes possible under the condition of using optical fiber edge coupling.

The invention provides a viscose aerogel fiber with a skin-core structure and a preparation method and application thereof.The viscose aerogel fiber comprises a skin layer and a core layer, the raw materials of the core layer comprise mesoporous silica, a two-dimensional nano material and viscose A. The raw materials of the skin layer comprise a silane coupling agent and viscose B, through the design of the components of the skin layer and the core layer and the regulation and control of the structures, on the premise that the flexibility and the spinnability of the viscose fiber are kept, the obtained viscose aerogel fiber can have both high heat insulation property and excellent mechanical stability.

The invention discloses an installation positioning device, a superconducting magnet system and a fusion reactor device, and belongs to the technical field of fusion reactor engineering. The mounting and positioning device comprises a back plate assembly and a clamping assembly, wherein the back plate assembly is used for connecting a coil main body of the superconducting magnet system; the clamping assembly comprises a first insulating part, two clamping parts and a plurality of adjusting parts, and the first insulating part forms a mounting cavity which is at least used for accommodating a coil joint of the superconducting magnet system; the first insulating part is arranged between the two clamping parts, and the clamping parts are connected with the back plate assembly; the multiple adjusting pieces are arranged outside the first insulating piece in a surrounding mode, and the adjusting pieces are connected with the two clamping pieces respectively and used for adjusting the clamping force between the two clamping pieces. The coil connector is positioned and fixed for multiple times through the back plate assembly and the clamping assembly, the mechanical stability and the electrical insulation performance of the coil connector are improved, and the disassembly, assembly and maintenance cost is reduced.

The invention relates to the technical field of green building construction, and discloses a concrete outer wall and green low-energy-consumption thermal insulation wall construction method which comprises the following steps that firstly, based on the heat conduction characteristic of a wall body, the thickness and the heat conduction coefficient of a thermal insulation layer are optimally designed through heat conduction analysis, so that the total heat loss of the wall body is reduced; 2, according to the mechanical equilibrium condition of the wall, stress distribution and a displacement field of the wall are determined through finite element analysis, and it is ensured that the structural strength of the constructed wall meets the design requirement; and 3, combining a multi-objective optimization theory, comprehensively considering the heat conduction performance, the mechanical stability and the construction cost of the wall body, and dynamically optimizing construction parameters. According to the construction parameter dynamic adjustment technology based on the multi-objective optimization theory, multiple constraint conditions such as heat loss, mechanical properties and construction cost are comprehensively considered, and the technical effect of achieving overall performance balance in the complex construction environment is achieved.

The invention discloses a magnet structure based on the mortise and tenon principle and an assembling method, the magnet structure comprises magnets, a plurality of magnets are connected end to end to form a ring, and mortise and tenon connection sections are processed at the head and tail ends of the magnets; when every two magnets in the tenon-and-mortise connection section are connected end to end, mechanical interlocking can be formed by assembling according to the tenon-and-mortise principle and meshing assembling between the grooves and the bosses, so that the stability of the magnets is greatly improved, and the assembling efficiency is improved. The overall mechanical stability is effectively improved, and the anti-shearing force is improved by about 18.7% through the mortise and tenon joint structure (compared with plane structure bonding). The magnetic performance is that the surface magnetic field of the magnetic ring assembled by the tenon-and-mortise structure is almost unchanged (compared with plane structure bonding). And the qualified rate of the product is increased to 90% from the original 50% in the process of producing, manufacturing and processing the magnetic ring.

The invention relates to a process forming method for a large thick-wall special-shaped curved surface carbon steel stainless steel shell. According to the process forming method, it is ensured that the high-precision molded surface size of the special-shaped curved surface shell is achieved in the forming process through multi-link optimization control. On the basis of allowance amplification optimization of three-dimensional modeling and expansion, by combining numerical control cutting and leveling processes, simulating a cutter pressing line path through software, and performing trial-manufacturing verification by using equal-proportion sample pieces; line-by-line and tool-by-tool pressing and two times of shaping inspection are adopted in the step-by-step pressing process, and the local deformation amount is corrected in real time; in the pre-assembly stage, the goodness of fit of assembly lines is ensured through three-dimensional lofting and scribing and tool positioning, and welding thermal deformation and residual stress are effectively controlled in cooperation with anti-deformation tool welding and aging treatment. Digital simulation, parameter iterative optimization, process error compensation and mechanical stability control are fused in the whole process, so that the profile precision of the shell meets the design requirement in the cold forming stage, and relying on machining correction is avoided.

The invention discloses sulfo group modified silicon-based hybridized super-hydrophilic anti-fog resin as well as a preparation method and application of the sulfo group modified silicon-based hybridized super-hydrophilic anti-fog resin. The silicon-based hybrid super-hydrophilic anti-fog resin is based on polysiloxane modified acrylic resin, a functional monomer containing a sulfonic acid group is introduced, the dosage is controlled, a spraying process is combined, a prepared coating has excellent anti-fog performance, high transparency and mechanical stability, the water contact angle of an obtained coating film is 5-6 degrees, the hardness is 2-3H, the adhesive force is 0 grade, and the anti-fog performance is good. The acid and alkali resistance test lasts for more than 30 hours, and super hydrophilicity is realized. The coating shows excellent antifogging performance under the steam environment of 80 DEG C and the freezing environment of-15 DEG C, and is suitable for antifogging treatment of substrates such as optical devices and automobile glass.

The invention relates to a low-ice-adhesion super-hydrophobic anti-icing coating as well as a preparation method and application thereof. Single-end amino fluorosilicone oil is grafted to the surface of an aldehyde group functionalized metal organic framework material through an amino-aldehyde group condensation reaction to obtain a hydrophobically modified metal organic framework material, the hydrophobically modified metal organic framework material is compounded with a synthesized fluorinated acrylate copolymer, and the coating is prepared through ultrasonic dispersion and spraying curing processes. According to the prepared low-ice-adhesion super-hydrophobic anti-icing coating, through the synergistic effect of fluorosilane grafting modification and a micro-nano structure, the excellent performance that the static water contact angle is larger than or equal to 160 degrees, the rolling angle is smaller than or equal to 2 degrees, and the ice adhesion strength is smaller than or equal to 20 kPa is achieved. Compared with a traditional anti-icing coating, a metal organic framework material functional modification strategy is adopted, the ice adhesion force is remarkably reduced while the mechanical stability of the coating is kept, and uniform film forming on the surfaces of base materials such as aluminum wires can be achieved through the spraying technology. The coating is suitable for anti-icing protection of the aluminum conductor of the power transmission line, and has the characteristics of long-acting icing resistance and low ice adhesion.

The invention provides a high-carbon-chromium bearing ring structure property distribution control method, relates to the technical field of bearings, and aims to solve the problem that the structure property requirement of a high-carbon-chromium bearing steel precision bearing cannot be well met in the related technology. The control method comprises the steps that overall quenching treatment is conducted on the first side and the second side of the bearing ring; gradient tempering heat treatment is conducted on the first side of the bearing ring, so that a tempering gradient temperature field is constructed on the radial wall thickness of the bearing ring, and a heat source is transmitted to the second side from the first side in a heat conduction mode; and performing cold treatment on the first side and the second side of the bearing ring. According to the method, it can be guaranteed that the quenched working face has enough retained austenite with the high carbon content, so that the working face has high heat stability and mechanical stability after gradient tempering and stable heat treatment, and asynchronous transformation of the retained austenite in the radial direction of the bearing ring is achieved; and the differentiated requirements of the raceway working surface and the radial whole on the retained austenite content are effectively met.

The invention relates to the technical field of oil-gas exploration, and provides a fault trap capability evaluation method, device and equipment and a storage medium, and the method comprises the steps: building a quantitative relation model between a friction coefficient and the shale content based on the logging data of a to-be-evaluated extension stress fault region; the target shale content of any target infinitesimal point location is extracted, and the target friction coefficient of the target infinitesimal point location is calculated based on the quantitative relation model; calculating a first evaluation parameter of the mechanical stability of the target infinitesimal point location based on the target friction coefficient, and calculating a second evaluation parameter of the sealing capacity of the target infinitesimal point location according to the target shale content; and based on the first evaluation parameter and the second evaluation parameter, determining the ultimate loading capacity of the target infinitesimal point location. By constructing the quantitative relation model between the friction coefficient and the shale content, the quantitative relation between the physical property and the mechanical property of the fault is established, the ultimate pressure-bearing capacity of the extension stress fault is comprehensively evaluated, and the evaluation accuracy of the ultimate pressure-bearing capacity of the fault is improved.

The invention discloses a low-temperature and low-pressure connection method for copper surface in-situ nanocrystallization, and relates to a copper connection method. The method aims at solving the technical problems that operation of current copper sintering connection is complex, an intermediate layer needs to be added for assistance, the connection strength is low, the interface welding rate is low, the connection temperature and pressure are too high, and the heat preservation time is long. The nanolayer is prepared on the surface of the copper substrate by adopting an in-situ nanocrystallization method, the nanostructure has relatively large surface energy, sintering connection can be realized at low temperature and low pressure, a high-strength joint is formed, and the method can be applied to the fields of copper connection, electronic packaging and the like. And under the condition of 125 DEG C / 10min / 5MPa, the shear strength of the obtained joint can reach 118.9 MPa without additionally adding a nano-particle sintering middle layer, and a connection structure with low connection temperature, short time, low required pressure and high mechanical stability is realized. The method is simple and effective to operate, can realize low-temperature connection of large-size samples, and has a wide application prospect.

The application discloses a preparation method of graphene aerogel and application thereof, and the graphene aerogel is prepared from a three-dimensional network of graphene oxide as a continuous matrix, hydrophilic polyimide fibers as a reinforcing framework, and metal-organic coordination bonds as functional nodes by coordinating cobalt ions with ethylenediamine tetramethylene phosphonic acid, and is prepared through a hydrothermal reaction, freeze drying and high-temperature annealing; the preparation method is simple, the process is easy to control, the electromagnetic shielding performance of the prepared graphene aerogel reaches 48 dB, and the graphene aerogel has good mechanical stability in the range of-75 to 150 DEG C; under a pressure of 1 kg, the compression time and recovery time of the graphene aerogel are 30 ms and 27 ms respectively, and the graphene aerogel meets the commercial standards of sensing materials and shielding materials.

The invention discloses a printed circuit board and electronic equipment, and relates to the technical field of printed circuit boards, the printed circuit board comprises a circuit board main body and an elastic part, a buffer groove is arranged at the outer side of a fixing hole of the circuit board main body, and the elastic part is installed, so that the elastic part is elastically abutted against a screw cap, and buffer vibration absorption and stress dispersion during screw fastening are realized; local stress concentration caused by rigid contact is avoided, and the problems that in the prior art, stress around a screw hole is concentrated in the screwing process of a screw, consequently, a server mainboard cracks or deforms, and the performance and the service life of electronic equipment are affected are solved. The technical effects of improving the mechanical stability of the circuit board, prolonging the service life and enhancing the equipment reliability are achieved.

The invention discloses a cement-enhanced super-hydrophobic self-adaptive temperature control coating which comprises a thermochromic bottom layer and a radiation refrigeration surface layer, a primer adopted by the thermochromic coating is prepared from the following components in parts by weight: 3 to 6.6 parts of composite resin matrix, 0.4 to 1.2 parts of filler, 11 to 15 parts of thermochromic powder and 10 to 15 parts of organic solvent; and finish paint adopted by the thermochromic coating is prepared from the following components in parts by weight: 50 to 55 parts of SiO2 dispersion liquid, 2 to 9 parts of white cement slurry, 5 to 8 parts of hydrophobic modifier, 6 to 10 parts of low-surface-energy substance and 7 to 11 parts of migration-anchoring dual-function additive. The coating system disclosed by the invention can realize efficient cooling in a high-temperature environment, can keep thermal insulation performance in a low-temperature environment, has mechanical stability and self-cleaning performance required by long-term outdoor application, and is wide in applicability.

The invention discloses a cable head insulation paste reinforced cable, which relates to the technical field of cables, and comprises a main body mechanism, and the outer surface wall of the main body mechanism is movably sleeved with a protection mechanism; the protection mechanism comprises a protection sleeve; in the assembly process of the cable and the connector, the protective sleeve achieves accurate clamping through a linkage structure of gear transmission and rack pushing, after an arc-shaped plate drives a clamping block to be tightly attached to the protective layer, a spring drives a piston to extrude liquid insulation glue in a glue storage cavity, and the liquid insulation glue penetrates through a sealing film to form a uniformly-covered curing composite layer; the cured adhesive layer and the clamping block have a synergistic effect, and have multiple protection characteristics of isolating moisture permeation, strengthening connection rigidity and dispersing external impact, so that deterioration of insulation performance of a joint caused by invasion of water vapor or external pollutants can be effectively prevented, and contact resistance fluctuation caused by a vibration environment is also remarkably inhibited due to enhanced mechanical stability.

The invention provides an extramedullary 3D printing composite intramedullary fixing bone end broach system, and relates to the technical field of medical instruments. Comprising a bone prosthesis and a fixing system, and the fixing system comprises a broach which is arranged at one end of the bone prosthesis and is fixed in a medullary cavity through bone cement; the fixing piece is arranged at the end, close to the broach, of the bone prosthesis and makes contact with the host bone, and the contact face is a 3D printing interface; the preset part is used for replacing the fixing part to make contact with the host bone in the prosthesis mounting operation. According to the fixing system, the broach, the fixing part and the preset part are used in cooperation, bone cement in a medullary cavity is fixed through the broach, and 3D interface fixing is adopted through the fixing part, so that the bone prosthesis has good bone conductivity and mechanical stability in a long term and a short term; and the influence on bone ingrowth caused by the fact that bone cement falls into a 3D contact interface of the fixing piece in a prosthesis installation operation is avoided.