27results about How to "Low elastic modulus" patented technology

The present invention provides a novel co-modified silicone or the like. A co-modified silicone which contains a structure containing a phenolic hydroxyl group and a polyether structure in a molecule.

This invention relates to the field of electronic component packaging materials technology, and discloses an anisotropic conductive film with low elastic modulus after curing and its preparation method. The conductive film comprises the following components by weight: 35-80 parts of compounded epoxy resin; 50-90 parts of compounded acrylate monomers; 1-10 parts of conductive particles; 10-20 parts of fumed silica; 1-10 parts of phosphate methacrylate; 1-8 parts of silane coupling agent; 1-10 parts of surface leveling agent; and 3-15 parts of initiator. The compounded epoxy resin is a blend of hydrogenated bisphenol A type epoxy resin and bisphenol F type epoxy resin; the compounded acrylate monomers are a blend of hydroxyethyl methacrylate, trimethylolpropane triacrylate, and ethylene glycol diacrylate. The conductive film of this invention has a low elastic modulus after curing, which can directly reduce the internal stress generated during cooling and shrinkage, resulting in better reliability of the ACF and stable performance in environmental testing.

The bracket assembly and automobile of this application belong to the field of automotive technology. The bracket assembly includes a support plate and a support frame. The support frame has a support body and a hollow area. The support body spans across both ends of the support plate along its length. The hollow area and the support body are arranged along the width of the support plate. The support frame is fixed to the support plate. The elastic modulus of the material of the support frame is greater than that of the material of the support plate, and the density of the material of the support plate is less than that of the material of the support frame. The bracket assembly and automobile of this application, on the one hand, can reduce the probability of vibration and abnormal noise of the rear shelf during vehicle operation, and the rear shelf, supported by the bracket assembly, can bear a larger weight to better realize the storage function of the rear shelf. On the other hand, the bracket assembly composed of the support plate and the support frame has a lighter structural weight, which can reduce the overall vehicle weight.

This invention discloses a single-layer soft dental membrane and method for dental treatment or oral protection, belonging to the field of dental materials technology. The membrane is made of thermoplastic polyurethane elastomer (TPU) with a microphase separation structure and a hydrophilic modified layer containing polydopamine and hydrophilic polymer on its surface. The membrane has a Shore hardness of 75A-90A, a tensile strength of 15-50MPa, an elongation at break ≥500%, and a thickness of 0.5-6.0mm. The preparation method includes TPU drying, extrusion molding, plasma treatment, and hydrophilic coating impregnation reaction. The membrane of this invention has flexibility, durability, antibacterial properties, and high transparency, and its comprehensive performance is superior to that of existing EVA membranes. It can be used in dental whitening trays, sports mouthguards, or oral ulcer protection patches.

The utility model relates to a kind of fluorine-lined pipeline with temperature-resistant anti-deformation structure, the fluorine-lined pipe of its inner layer, fluorine-lined pipe is made of polytetrafluoroethylene material, its inner wall is smooth, for transporting corrosive medium;The reinforcing structure layer of middle layer, reinforcing structure layer includes high-strength steel wire framework spirally wound along the length direction of fluorine-lined pipe, and high-temperature resistant resin material filled in the gap of steel wire framework, steel wire framework and high-temperature resistant resin material solidification are integrated, to enhance the compression resistance and anti-deformation ability of pipeline;The protective layer of outer layer, protective layer is the outer tube of stainless steel material, outer tube is tightly set in the outside of reinforcing structure layer, for protecting internal structure and further improving the overall strength of pipeline, heat insulation buffer layer is set between fluorine-lined pipe and reinforcing structure layer, heat insulation buffer layer is ceramic fiber felt material, its thickness is 5-10mm, by this design, the heat conductivity coefficient of ceramic fiber felt still keeps low level with temperature rise, 5mm thickness can make heat conduction efficiency reduce more than 60%.

The application discloses a display module and a display device. The display module comprises a display panel and a support assembly. The support assembly is arranged on the non-light-emitting side of the display panel. The support assembly comprises a first support layer and a second support layer connected with each other. The orthographic projection of the first support layer on the display panel covers two non-bending areas. The orthographic projection of the second support layer on the display panel covers at least a bending area. The elastic modulus of the second support layer is smaller than that of the first support layer. In the related art, the support layer made of an integral metal material is replaced by the first support layer and the second support layer with different elastic modulus. Since the second support layer itself has the characteristics of low elastic modulus and easy processing, it does not need to be provided with a hollow pattern, the complex processing technology of the integral metal film material can be omitted, the production cost of the module is greatly reduced, and the requirement of a large-size screen is met.

The present application relates to the field of high polymer materials, in particular to an environment-friendly adhesive tape for folding screen and a preparation process thereof. According to the requirements of low-temperature bending resistance, high-temperature viscosity and cohesion of flexible foldable mobile phones, a bio-based acrylate block copolymer with extremely low glass transition temperature and high glass transition temperature is designed, and through the regulation of soft and hard segment ratio, molecular weight and curing agent, the adhesive layer meets certain modulus and adhesion requirements, meets the requirements of low-temperature flexibility, high-temperature cohesion, high-temperature peeling without residual glue, and cutting without glue overflow of the bio-based acrylate copolymer adhesive layer, and solves the problems of macroscopic phase separation due to compatibility problems in conventional blending method, resulting in poor appearance and insufficient adhesion, low-temperature flexibility and poor reliability, and the bio-based ultra-thin double-sided adhesive tape uses bio-based raw materials which are easy to biodegrade in the adhesive layer, and improves the problems of difficult degradation, high pollution and high toxicity of petroleum-based adhesive layers.

This application relates to a composite grouting material, its preparation method, and its application, falling within the field of grouting material technology. The composite grouting material comprises an inorganic cementitious component, an organic modifying component, and water. By mass fraction, the inorganic cementitious component includes 30-50 parts of sulfoaluminate cement, 20-35 parts of silicate cement, and 5-15 parts of rapid-hardening mineral admixture. The organic modifying component includes 8-20 parts of polyimide prepolymer with anhydride and / or isocyanate end groups. The water-cement ratio is 0.28-0.38. By effectively synergistically employing the inorganic cementitious component and the organic modifying component, using a ternary cementitious system of "sulfoaluminate cement-silicate cement-rapid-hardening mineral admixture" as the inorganic framework, and introducing organic modification with polyimide prepolymer, the material exhibits high early compressive strength and high toughness, while simultaneously possessing high freeze-thaw resistance and high impermeability, effectively meeting the needs of tunnel leakage control and crack repair projects in high-altitude and cold regions.

This invention discloses a low-elasticity biomedical refractory high-entropy alloy and its preparation method, wherein the cluster formulas are: [(Sn 0.5 Mo 0.5 )-(Ti6Zr6Hf2)]Nb3、[(Sn 0.5 Mo 0.5 )-(Ti7Zr7)]Nb3、[(Sn 3.1 Mo 3.1 )-(Ti 29.2 Zr 29.2 Hf 29.1 )]Nb 6.3 、[(Sn 2.7 Mo 2.7 )-(Ti 25.9 Zr 25.9 Hf 25.9 )]Nb 16.7 The low-elasticity biomedical refractory high-entropy alloy prepared by this invention exhibits low elastic modulus, high strength, hardness, and ductility at room temperature. After surface nitriding treatment, a nitride ceramic coating with both high hardness and excellent corrosion resistance was successfully obtained on the alloy surface; the average nanoindentation hardness of the nitride layer reached 24.23 GPa. Furthermore, this technique essentially did not alter the microstructure and properties of the matrix, which still exhibited good corrosion resistance and biocompatibility.

The application discloses a kind of multi-section wedge pile composite reinforced soil body and natural site soil body structure, it is related to construction engineering pile foundation technical field;To solve the problem of insufficient bearing capacity of pile foundation;The structure, including multi-section wedge pile, the soil body around pile of being arranged at the circumference of multi-section wedge pile and the natural site soil body of being arranged at the circumference of soil body around pile, the pile end of the multi-section wedge pile is provided with pile end soft pad layer;The wedge-shaped inclined surface of the multi-section wedge pile generates high horizontal passive earth pressure to soil body around pile;Soil body around pile amplifies, leads out, and transfers earth pressure to natural site soil body.The application improves the horizontal passive earth pressure of soil body around pile, and then also assists to improve the horizontal passive earth pressure of natural site soil body at the circumference of soil body around pile, while the bearing capacity of multi-section wedge pile is greatly improved.

The invention discloses a flexible micro electrical stimulator capable of being wound and adhered to peripheral nerve tracts and a preparation method and application thereof, and relates to the technical field of crossing of neural engineering, bioelectronics and medical instruments. A first insulation layer, a first friction electrode layer, a middle isolation layer, a second friction electrode layer and a second insulation layer are assembled layer by layer; the first insulation layer and the second insulation layer are self-adhesion polyurethane layers, and the first friction electrode layer, the middle isolation layer and the second friction electrode layer are packaged in the first insulation layer and the second insulation layer; the first friction electrode layer is a gold foil, and the surface of the gold foil is electroplated with a PEDOT: PSS plating layer formed by a 3, 4-ethylenedioxythiophene monomer and polystyrene sulfonate; the second friction electrode layer is gold foil or aluminum foil. According to the invention, macro-scale contact-separation type friction power generation is realized through ultrasonic driving, and the device has good output performance, long-term stability and nerve stimulation effect.

The invention provides a preparation method of a high-voltage composite positive electrode, which comprises the following steps: mixing a low-melting-point solid electrolyte or a precursor of the low-melting-point solid electrolyte, a high-voltage polycrystalline positive electrode material and a conductive agent to obtain a composite positive electrode precursor; and carrying out low-temperature heat treatment on the composite positive electrode precursor to melt and permeate the solid electrolyte into the high-voltage polycrystalline positive electrode material, and uniformly adhering the conductive agent to the surface of the positive electrode along with the solidification of the molten electrolyte during cooling to obtain the high-voltage composite positive electrode. The preparation method synchronously solves the problems that internal pores of the high-voltage polycrystalline positive electrode material hinder ion and electron transmission and the polycrystalline morphology of the positive electrode material is easy to break. The invention also provides the high-voltage composite positive electrode prepared on the basis of the preparation method and a solid-state battery comprising the high-voltage composite positive electrode. The solid-state battery based on the high-voltage composite positive electrode is high in utilization rate of active substances and excellent in rate capability and cycle performance.

This invention discloses a porous personalized implant and its manufacturing method. The porous personalized implant includes an abutment and an implant body. The abutment is disposed on top of the implant body and connected to it via a neck. A threaded, porous layer is formed directly on the outer surface of the implant body. The porous layer is helical and has a non-uniform curved surface structure, resulting in an uneven surface. A porous support region is also provided on the outer surface of the neck, passing through the neck and communicating with the porous layer on the outer surface of the implant body. The porous personalized implant of this invention is integrally molded. The porous structure adopts the G-surface structure of the three-period minimal surface, solving the stress shielding and stress concentration problems of existing dental implants. Furthermore, it shortens the surgical cycle while reducing damage to the surface treatment layer during implantation, improving the osseointegration performance of the implant and meeting the needs of different patients.

A method for preparing a binary formula for Dai pottery clay and its application is disclosed. The method involves taking Dai pottery clay from the Honghe River basin, five-colored clay from Honghe County, and charcoal powder. The Dai pottery clay and five-colored clay are sun-dried and weathered for at least three months. The Dai pottery clay from the Honghe River basin has a SiO2 content of not less than 50%, an Al2O3 content of not less than 15%, an Fe2O3 content of not less than 10%, and a loss on ignition of less than 10%. The five-colored clay from Honghe County has a SiO2 content of 72-82%, an Al2O3 content of 9-12%, and an Fe2O3 content of 3-5%. The method involves soaking the Dai pottery clay and five-colored clay in water until fully saturated, then ball-milling them. The slurry is sieved, and then charcoal powder is added. After stirring evenly, the clay is pressed to drain water and then kneaded to remove air. This invention can improve the throwing and molding performance of Dai pottery clay, increase the sintering temperature and the density and strength of its structure, and reduce the burn-off rate.

The invention provides a lacquering mold for a horizontal enameled flat wire and a preparation method of the lacquering mold, and relates to the technical field of mold material processing. The material used by the painting mold is an aluminum-based or magnesium-based composite material reinforced by ceramic particles, and the ceramic technology is one or more of SiC, TiC, TiB2, Al2O3 particles or whiskers. The mold is manufactured by adopting a powder injection molding process. The lacquering mold for the horizontal type enameled flat wire has the advantages of being low in thermal expansion coefficient, high in hardness and elasticity modulus and good in abrasion resistance, can stably float at the design position in a paint box, and solves the problem that due to the fact that a traditional mold is large in weight and deviates from the center, the thicknesses of paint films on the upper side and the lower side of the enameled flat wire are not consistent.

The application discloses a coating material for silicone and fiber cloth composite and a forming process. The coating material comprises a bottom layer and a thin layer, the bottom layer contains modified hydrogen-containing silicone oil A (containing polyether and quaternary ammonium salt), the thin layer contains modified hydrogen-containing silicone oil B (containing epoxy group) and modified white carbon black. Through gradient vulcanization of the semi-cured bottom layer and the fully-cured thin layer, a release paper is not needed, the production process is simplified, the cost is low, and environmental protection is good. The coating material has good weather resistance, soft hand feeling and clear surface patterns, and solves the problems of poor interface bonding force, insufficient wear resistance, difficult consideration of hand feeling and mechanical properties and limited decoration of the existing silicone leather.

The present application relates to the technical fields of vibration and noise control, and discloses a pier-tai type damping structure and a design method thereof. The pier-tai type damping structure comprises a first support, a bearing platform, a pier-tai and a second support. The pier-tai is supported on the top of the bearing platform and has a support end face facing the bearing platform. The second support has a connecting face connected with the pier-tai, and the area of the connecting face is smaller than that of the support end face. The damping pad is arranged between the bearing platform and the pier-tai to isolate the vibration transmission to the upper part. By increasing the bearing area of the pier-tai and uniformly spreading the vertical force of the second support, the bearing strength of the damping pad is reduced by several times, the thickness of the damping pad can be increased, and the vertical stiffness of the damping pad is reduced. In addition, the distributed damping pad has a smaller first shape coefficient and a larger overall second shape coefficient. The vertical stiffness of the damping pad is significantly reduced, the vertical bearing capacity is stable, the damping structure has good low-frequency vibration isolation performance, and has the advantages of simple structure, low cost and the like.

This utility model discloses a screen structure and a high-gain white screen, belonging to the field of projection display technology. The screen structure includes two substrate layers, with a barrier layer bonded between the two substrate layers via an adhesive layer. The substrate layers, adhesive layer, and barrier layer have different refractive indices. The high-gain white screen includes a protective layer, a diffusion layer, and the aforementioned screen structure, arranged sequentially from the incident surface to the back surface. By utilizing the difference in refractive indices between the substrate layer, adhesive layer, and barrier layer, an optical effect similar to mother-of-pearl is created, reducing light penetration and enhancing light reflection and scattering. This improves detail rendering, reduces the loss of dark areas, enhances resistance to external light interference, reduces contrast, reduces color saturation distortion, reduces light loss during propagation, improves overall brightness uniformity, ensures full presentation of high-resolution signal details, and is compatible with more projection devices.

The application provides a gap oxygen-doped Ti-Zr-Nb-Al medium-entropy alloy with a superhard oxide layer, and an expression is as follows: (Ti a Zr b Nb c Al d ) 100‑e O e , 40 at.%≤a≤50 at.%, 36 at.%≤b≤45 at.%, 3 at.%≤c≤17at.%, 1 at.%≤d≤7 at.%, 0.5 at.%≤e≤2.0 at.%, a+b+c+d=100 at.%. A preparation method comprises the following steps: mixing raw materials, smelting to prepare a cast ingot, polishing after wire cutting, and polishing to obtain the gap oxygen-doped Ti-Zr-Nb-Al medium-entropy alloy with the superhard oxide layer. Then, the gap oxygen-doped Ti-Zr-Nb-Al medium-entropy alloy with the superhardoxide layer is obtained by heat oxidation for 6h under the condition that the temperature is 500 DEG C and the air atmosphere is air, and natural cooling to room temperature. An application is also provided, and is used for medical orthopedic implant materials. The gap oxygen-doped Ti-Zr-Nb-Al medium-entropy alloy with the superhard oxide prepared by the application has a low elastic modulus, the surface of the alloy in an oxidized state has superhigh hardness, has good wear resistance, and can be used for medical orthopedic implant materials.

The utility model discloses a curved surface attached flexible circuit board antenna, which comprises a circuit board body and a micropore array, the circuit board body comprises a deformation area and a fixed area, the micropore array is arranged in the deformation area, and the micropore array comprises a plurality of through holes distributed in an array; the circuit board body comprises an insulation surface layer, an insulation grid layer, a conductive circuit layer, a compensation circuit layer and an insulation bottom layer which are stacked in sequence, the conductive circuit layer comprises a radiation circuit and a welding terminal, the line width of the radiation circuit is larger than the aperture of the through hole, the radiation circuit is arranged in the deformation area, and the welding terminal is arranged in the fixing area. The compensation line layer comprises a plurality of compensation radiation rings connected with the radiation line, and the compensation radiation rings surround the periphery of the through hole. According to the utility model, the elastic modulus of a deformation area can be effectively reduced, the stress during bending is released, the stress concentration is avoided, the curved surface attachment effect is stable and reliable, the signal transmission reliability is high, and the structural stability is strong.

The present application relates to the technical field of gas turbine, and discloses a sectional detachable heat preservation device for fuel branch pipe of gas turbine, which comprises a heat preservation block, a plurality of first magic tape rough surface patches are fixedly connected to the top of the heat preservation block, the first magic tape rough surface patches on both sides are staggered, first magic tape hook surface patches are fixedly connected to the top of the heat preservation block, the first magic tape hook surface patches on both sides of the heat preservation block are staggered, a first mounting block is arranged on one side of the heat preservation block, two fixed plates are fixedly connected to one side of the first mounting block, and a sliding groove is formed in one side of each of the two fixed plates, and the sliding grooves are oppositely arranged. The present application completely solves the problems of repeated peeling of the heat preservation layer, sealing failure and heat leakage caused by traditional rigid connection, avoids the wear of the matching surface caused by repeated disassembly and assembly, shortens the disassembly and assembly time, and solves the industry pain points of damage of the heat preservation structure, difficulty in repositioning and high labor cost of the gas turbine power plant caused by frequent maintenance.

This invention relates to the field of large bulk material handling machinery, specifically to a device and method for correcting the deviation of a movable beam in a bucket wheel excavator. The device comprises a movable beam, a trolley, a traveling wheel frame with electromagnets, a magnetorheological elastomer pad, a main drive hydraulic cylinder, cross-connected antagonistic hydraulic cylinders, and a controller. The system calculates the resistance-thrust-stiffness mismatch index through the controller. When the index exceeds a threshold, the electromagnets are triggered to generate an upward suction force to reduce the contact normal pressure on the traveling wheels, and simultaneously reduce the elastic modulus of the pad to release lateral restraint. Its core principle is to utilize electromagnetic attraction and a variable stiffness pad to synergistically reduce drag, which, in conjunction with the main drive hydraulic cylinder, pushes the movable beam for lateral repositioning. This invention abandons the traditional rigid lateral pushing method under heavy loads, significantly reducing the thrust required for lateral repositioning, effectively solving the problems of easy stick-slip jumping and stress concentration, and achieving smooth deviation correction.

The application relates to an engine composite active cooling heat-proof structure and an engine. The engine composite active cooling heat-proof structure comprises a heat-proof layer (1), a heat insulation layer (2) and an active cooling layer (3); the heat insulation layer (2) is between the heat-proof layer (1) and the active cooling layer (3); the active cooling layer (3) comprises a cooling layer main body (31); and a cooling flow channel (3a) for circulating cooling liquid is arranged in the cooling layer main body (31). The heat transfer thermal resistance of the engine composite active cooling heat-proof structure is greatly improved, so that the use flow and temperature rise of the cooling liquid (such as kerosene) are obviously reduced.

The application discloses a 3D-printed implant with arc-shaped pipelines and a preparation method thereof, which is used for being implanted into an alveolar bone implantation nest of a patient, and the implant comprises a dense core body and a bone bonding part wrapped outside the dense core body; the bone bonding part comprises a first porous part and a second porous part; the first porous part is connected with the top surface of the second porous part; a plurality of arc-shaped pipelines are arranged in the first porous part; the arc-shaped pipelines are provided with openings at two ends and are communicated with the outside through the openings; the arc-shaped pipelines are extended into a cleaning part through the openings to clean the interiors of the arc-shaped pipelines. The interiors of the arc-shaped pipelines can load drugs (such as BMP-2, VEGF, PDGF and the like) to induce the rapid growth of bone tissues. The implant has the characteristics of good strength, matched elastic modulus of the bone bonding part and the patient and easy cleaning. The implant has a wide indication and is suitable for various edentulous patients, especially for the cases of insufficient alveolar bone mass or bone density.

The invention relates to the technical field of waterproof mortar, in particular to shrinkage-free high-ductility waterproof repair mortar and a preparation method thereof. The shrinkage-free high-ductility waterproof repair mortar comprises a high-ductility functional system and a controllable early strength system, and the high-ductility functional system comprises modified sisal fibers, anhydrous calcium sulfate, an ethylene-vinyl acetate copolymer, an amorphous active silicon material, a defoaming agent, lithium carbonate, cellulose ether, a thixotropic agent, L-tartaric acid and sodium gluconate. The controllable early strength system comprises ordinary Portland cement, rapid hardening type sulphoaluminate cement, 20-40-mesh river sand and 40-70-mesh river sand. The high-ductility functional system and the controllable early-strength system form the high-ductility shrinkage-free waterproof repair mortar through a specific preparation mode, the controllable early-strength system can rapidly repair a damaged structure, effective bonding can be achieved in adverse environments such as damp and vertical faces, the system is kept cracked and not damaged when being damaged by external force, and leakage can be effectively stopped.

This invention discloses a refrigerant check valve for a thermal management system, comprising a valve body, a sealing plate, and a valve stem. The valve body is installed inside a pipeline, the sealing plate is fitted onto the valve body, and the valve stem is vertically positioned at the bottom of the sealing plate. A baffle is provided at the bottom of the valve stem. An O-ring 1 is fitted into the annular groove of the valve body, and an O-ring 2 is fitted into the annular groove of the sealing plate. A drainage channel is vertically provided at the bottom of the valve body. When the system refrigerant pressure is greater than or equal to the preload of spring 123, the sealing plate 110 moves upward to open the channel. When the sealing plate 110 moves upward, it drives the valve stem 120 and the baffle 121 to move upward. When the baffle 121 contacts the bottom of the limiting platform 130, the compression of spring 123 remains unchanged, thereby preventing spring 123 from being compressed to a "completely compressed" state. This avoids material fatigue and a decrease in elastic modulus after long-term use of spring 123, reducing the probability of spring 123 failure and the wear rate of O-ring 140, thereby reducing the risk of refrigerant leakage.