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967 results about "Mechanical stability" patented technology

Preparation method of wear-regenerative super-hydrophobic durable anti-corrosion coating

The invention discloses a preparation method of a wear-regenerated super-hydrophobic durable anti-corrosion coating. The preparation method comprises the following steps: constructing a mechanical-sturdy super-hydrophobic coating with body phase consistency through reverse filling of a self-similar structure; wherein the oily binder solution is subjected to phase separation under the action of an alcohol solvent, is mixed with the fluorinated nanoparticles and is sprayed on the surface of a metal matrix to construct a self-similar super-hydrophobic coating, and a uniform dispersion liquid of the low-surface-energy nanoparticles and the high-hardness oily binder is sprayed on the surface of the self-similar super-hydrophobic coating; particularly, the self-similar structure of the super-hydrophobic coating can be effectively filled with the high-hardness oily binder due to the good oil absorbency of the oily binder, and finally the wear-regeneration durable super-hydrophobic anti-corrosion coating is formed; the wear regeneration durable super-hydrophobic anti-corrosion coating prepared by the method not only has excellent super-hydrophobicity, mechanical stability, chemical stability and anti-corrosion performance, but also has the advantages of special mechanical wear regeneration super-hydrophobicity and the like.
Owner:UNIV OF SCI & TECH LIAONING

Construction method of variable-curvature super-depth fusiform skylight in steel structure

The invention relates to the technical field of building construction, in particular to a construction method of a variable-curvature super-depth fusiform skylight in a steel structure, and solves the construction problem of a complex space curved surface through digital design, factory prefabrication, intelligent installation and real-time monitoring and compensation. Through a digital twin-driven construction technology system, the worldwide problems of the variable-curvature ultra-deep steel structure in the aspects of form precision, mechanical stability and construction efficiency are solved, a technical normal form capable of being popularized is provided for the ultra-deep and variable-curvature steel structure, and building form innovation is promoted. And meanwhile, the dependence on manpower is reduced through modular and mechanical operation, the construction period is shortened, the safety is improved, and the cost is reduced by combining prefabricated unit components with dynamic monitoring.
Owner:CHINA UNITED NORTHWEST INST FOR ENG DESIGN & RES

Dynamic-covalent hybrid cross-linked hydrogel material as well as preparation method and application thereof

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.
Owner:SHANGHAI NINTH PEOPLES HOSPITAL SHANGHAI JIAO TONG UNIV SCHOOL OF MEDICINE

Anti-aging water-stop belt as well as preparation method and application thereof

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.
Owner:YUYIN TECH CO LTD

Spherical-like silicon-carbon negative electrode material as well as preparation method and application thereof

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.
Owner:LANXI ZHIDE ADVANCED MATERIALS CO LTD

Photon integrated circuit chip and silicon optical integration platform

The invention discloses a photonic integrated circuit chip and a silicon optical integration platform, and aims to provide a specific waveguide structure on the photonic integrated circuit chip to realize efficient coupling with a common single-mode fiber, and meanwhile, a suspended structure is not introduced, so that the overall structure has relatively high mechanical stability. The method can pass high-temperature and high-humidity reliability test conditions of the photon integrated circuit chip, and is compatible with reflow soldering, silicon through hole and other processes.
Owner:INNOLIGHT TECHNOLOGY (SUZHOU) LTD

Technologies for ceramic components embedded in a substrate core

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.
Owner:INTEL CORP

Hydraulic mechanism for water-cooled magnet structure with high mechanical stability

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.
Owner:HEFEI INSTITUTE OF PHYSICAL SCIENCE CHINESE ACADEMY OF SCIENCES

Self-registering, -squaring, and -supporting mount apparatus and method

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.
Owner:VFC GROUP LLC

High-toughness metal ceramic particle and preparation method thereof

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.
Owner:YIYANG JINNENG NEW MATERIAL

Slowly-dissolved micro-nano dispersion scale inhibition material and preparation method thereof

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.
Owner:CHENGDU NAHAICHUAN ENVIRONMENTAL ENG CO LTD

Coated glass and preparation method therefor, and laminated glass

PCT designated stage expiredWO2025036261A1Glass/slag layered productsPolymer scienceMechanical stability
Provided in the present application are coated glass and a preparation method therefor, and laminated glass. The coated glass comprises a first substrate and a coating structure, which is arranged on at least one surface of the first substrate. The coating structure comprises at least one functional laminated layer, each of which comprises a lower dielectric layer, a metal layer and an upper dielectric layer, which are sequentially stacked, wherein at least one of the lower dielectric layer and the upper dielectric layer comprises a ZrOx layer, x satisfying 1<x≤2, and the extinction coefficient k of the ZrOx layer being less than or equal to 0.0001. The technical solution in the present application enables the coating structure to have better levels of heat treatment stability and overall mechanical stability.
Owner:FUYAO GLASS IND GROUP CO LTD

Conductive carbon paste as well as preparation method and application thereof

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.
Owner:DONGGUAN DOMAL ELECTRONICS SCI & TECH

Broadband millimeter wave packaging method and packaging device of radio frequency MMIC PA chip

The invention provides a broadband millimeter wave packaging method and packaging device for a radio frequency MMIC PA chip, relates to the technical field of broadband millimeter wave packaging, and remarkably improves the design precision and reliability by introducing a closed-loop optimization mechanism based on simulation and actual test data. By dynamically adjusting the design requirement, the scheme effectively solves the problem of error accumulation in the traditional packaging design process, and ensures the performance balance of the equivalent thermal resistance and the compressive strength, thereby meeting the multi-objective optimization requirement. Meanwhile, the optimized packaging structure can show excellent heat dissipation performance and mechanical stability in a harsh working environment, the development cost is reduced, the research and development period is shortened, and important support is provided for industrial application of the layered wafer packaging technology.
Owner:HEFEI IC VALLEY MICROELECTRONICS CO LTD

Wind-resistant damping mechanism of photovoltaic panel

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.
Owner:TIANJIN SHENGLI NEW ENERGY TECHNOLOGY CO LTD

Novel internally-inserted water-cooled magnet container assembly for hybrid magnet with high mechanical stability

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.
Owner:HEFEI INSTITUTE OF PHYSICAL SCIENCE CHINESE ACADEMY OF SCIENCES

Biaxially oriented polypropylene composite film for capacitor and preparation method of biaxially oriented polypropylene composite film

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.
Owner:扬州博恒新能源材料科技有限公司

Preparation method of special ultrahigh-strength cement-based grouting material for wind power generation

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.
Owner:INNER MONGOLIA JUSHI MATERIAL TECH CO LTD

A wear-resistant micro-nanostructure super-hydrophobic coating with photothermal effect and preparation method thereof

The present invention belongs to the technical field of coating protection, and discloses a wear-resistant micro-nano structure super-hydrophobic coating with photothermal effect and a preparation method thereof. The method comprises the following steps: spin coating a defoamed PDMS prepolymer and a curing agent mixture onto a substrate for pre-curing treatment; adding micron carbon black particles or nano carbon black particles with photothermal effect into an organic solvent for ultrasonic dispersion to obtain a dispersion; spraying a micron carbon black dispersion on the surface of a substrate coated with PDMS, and then spraying a nano carbon black dispersion to obtain a coating with a micro-nano structure and a photothermal effect; then spraying a layer of PDMS prepolymer and a curing agent mixture diluted with an organic solvent on the surface, and curing at low temperature to enhance the wear resistance and mechanical stability of the coating. The coating prepared by the present invention has good super-hydrophobicity and wear resistance and durability; the photothermal effect significantly increases the temperature of the substrate under the action of sunlight, and has good application prospects in anti-icing.
Owner:NANJING UNIV OF SCI & TECH

Double-trigger programmable degradable PHA (polyhydroxyalkanoate) composition and preparation method thereof

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.
Owner:DU BAI CHENG NEW MATERIAL TECH (SHANGHAI) CO LTD +2

Optical chip optical fiber coupling packaging framework and process for photoelectric co-packaging

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.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA

Viscose aerogel fiber with skin-core structure as well as preparation method and application of viscose aerogel fiber

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.
Owner:BOSIDENG DOWN WEAR LTD +1

Installation positioning device, superconducting magnet system and fusion reactor device

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.
Owner:聚变新能(安徽)有限公司 +1

Construction method for concrete outer wall and green low-energy-consumption thermal insulation wall

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.
Owner:HENAN ELECTRIC BUTLER TECH GRP CO LTD +1

Magnet structure based on mortise and tenon principle and assembling method

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.
Owner:HANGZHOU KEDE MAGNETOELECTRIC CO LTD

Technological forming method of large thick-wall special-shaped curved surface carbon steel stainless steel shell

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.
Owner:WUHAN HEAVY MACHINE TOOL GRP

Sulfonyl-modified silicon-based hybrid super-hydrophilic anti-fog resin as well as preparation method and application thereof

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.
Owner:SOUTH CHINA UNIV OF TECH

Porous anti-drag coating and preparation method thereof

The invention belongs to the technical field of marine anti-drag materials, and particularly relates to a porous anti-drag coating and a preparation method thereof.The method comprises the steps that a substrate is coated with a mixed solution of natural polymers, cellulose nanocrystals, a two-dimensional nanomaterial and water and then soaked in a metal salt solution for a certain time, and a cross-linked coating is formed; the preparation method comprises the following steps: taking out the porous cross-linked coating, treating the porous cross-linked coating by using a directional freezing casting technology, soaking the porous cross-linked coating in an organic-inorganic mixed solution for a certain time, removing inorganic salt in the porous cross-linked coating after taking out the porous cross-linked coating, and performing hot pressing on the porous cross-linked coating to obtain the porous anti-drag coating. The organic-inorganic mixed solution is obtained by mixing a silane coupling agent, an inorganic precursor, inorganic salt, an adhesive polymer and an organic solvent. The finally obtained porous anti-drag coating has the characteristics of hardness and softness, rough surface, good mechanical stability, obvious micro vortex and excellent anti-drag performance.
Owner:COSCO SHIPPING ENERGY TRANSPORTATION CO LTD +1

Low-ice-adhesion super-hydrophobic anti-icing coating as well as preparation method and application thereof

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.
Owner:SHANGHAI JIAOTONG UNIV +2

High-carbon chromium bearing ring structure property distribution control method

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.
Owner:CHINA RAILWAY CONSTR HEAVY IND