10results about How to "Low elastic modulus" patented technology

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.

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%.

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 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 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.

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.

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.