30results about How to "Realize the integration of structure and function" patented technology

The invention relates to a design principle of a heat insulation structure used for a high-mach-number air vehicle. When the heat insulation structure of the high-mach-number air vehicle is designed through the principle, the weight of the heat insulation structure can be reduced on the premise that the heat insulation effect is guaranteed. The principle is that heat is taken away through high-speed flowing air and discharged out of the air vehicle, and the heat insulation aim is achieved. The principle is mainly used for designing structures, requiring heat insulation parts, of the high-mach-number air vehicle.

The invention relates to a method for preparing carbon fibre and graphene composite paper. The method comprises the following steps: performing ultrasonic treatment on graphite oxide in deionized water for 5-100 minutes at the ultrasonic power of 50-300W, thus obtaining a graphene oxide solution with the concentration being 0.1-10mg / mL; performing sedimentation compounding on the graphene oxide solution and a carbon fibre precursor substrate at the mass ratio of the graphene oxide solution to the carbon fibre precursor substrate being (0.01-100):1, thus obtaining carbon fibre and graphene oxide composite paper; and performing high-temperature processing under a protective atmosphere or vacuum protective condition for 0.1-10 hours at the temperature of 300-3,000 DEG C, thus obtaining the carbon fibre and graphene composite paper. The method has the advantages of high thermal conductivity, high conductivity, good mechanical property, and easiness in realizing large-scale production.

The invention provides a steel material, a preparation method and an application thereof. Including: dosing according to the following chemical composition to obtain raw materials: by weight percentage, the raw materials include C 0.08-0.30%, Si≤0.5%, Mn≤1.0%, Cu 0.5-2.0%, Al≤1.0%, Ce 0.01- 0.2%, Cr 0.5~1.5%, Mo 0.5~1.5%, V≤0.3%, N≤0.005%, O≤0.005%, S≤0.005%, P≤0.005%, the balance is Fe; the raw materials are smelted in sequence , pouring and post-treatment to obtain steel, and when the content of O and S elements in the reaction product system is not more than 0.005wt%, Ce is added to the reaction product system. The obtained steel has the advantages of high strength, high toughness, sulfide stress corrosion resistance and microbial corrosion resistance, and realizes the integration of structure and function.

The invention discloses a preparation method of a compound functional raw soil building block having a gradient structure. The preparation method comprises the following steps: preparing a die composed of N regions and gradient cement-modified raw soil slurry, wherein the use amount of raw soil in the gradient cement-modified raw soil slurry for casting is progressively decreased in sequence, and the use amount of cement is progressively increased in sequence correspondingly, and the progressive increment of the cement of two adjacent groups is 1 to 5%; filling and casting the slurry to outside regions from middle regions in sequence, pulling clapboards out after the filling is finished, carrying out vibration or compression molding and then curing for 48 hours under room-temperature and dark conditions, dismantling the die, and continuing to cure in a sealing manner for 26 days under the same environment to obtain a building block product. The compound functional raw soil building block having the gradient structure, which is prepared by using the preparation method, not only reserves the advantages of a conventional raw soil building material, but also has relatively high strength and stability, has the characteristics of light weight, heat insulation, high strength, good water resistance and the like and is thus a high-performance building material.

The invention discloses a chimney constructed by novel corrosion-resistant materials and a construction method thereof and a sleeve chimney with the chimney. The chimney comprises multiple fiber reinforced resin profiles, the fiber reinforced resin profiles are mutually connected in the longitudinal direction to form a column, and the multiple columns are mutually connected in the transverse direction to form to be in a hollow cylinder shape; a cavity of which the upper end and the lower end are open is limited in each fiber reinforced resin profile, filler is arranged in each cavity, and any two fiber reinforced resin profiles which are adjacently arranged in the transverse direction are staggered in the longitudinal direction. According to the embodiment of the chimney, the design thought similar to a fiber reinforced resin sandwich plate is adopted, the fiber reinforced resin profiles and the filler are used in a matched mode, the structural function integration of the chimney is achieved, the corrosion protection problem of the chimney is thoroughly solved, the structural strength of the chimney is high, the manufacture cost is lowered, and the construction is easy.

The invention specifically relates to a preparation method for a graphene damping composite material, belonging to the field of application of graphene composite materials. With graphene or graphene oxide as a raw material, graphene coats a foam metal framework in the manner of chemical vapor deposition or chemical coating, and resin is injected into the foam metal framework coated with a thin graphene layer so as to obtain the graphene / foam metal / polymer composite material. Thus, the damping performance of foam metal can be significantly improved by coating the foam metal framework with the graphene, and after compounding of the foam metal framework with the resin, the graphene / foam metal / polymer composite material with significantly improved mechanical performance and good damping performance can be obtained. The preparation method for the graphene damping composite material has the technical characteristics of simple process, good repeatability, remarkable application effect and thelike.

The application provides a steel pipe, its preparation method and application. It includes: dosing according to the following chemical composition to obtain raw materials: by weight percentage, the raw materials include C 0.08-0.30%, Si≤0.5%, Mn≤1.0%, Cu 0.5-2.0%, Al≤1.0%, Ce 0.01 ~0.2%, Cr 0.5~1.5%, Mo 0.5~1.5%, V≤0.3%, N≤0.005%, O≤0.005%, S≤0.005%, P≤0.005%, the balance is Fe; Melting, pouring, electroslag remelting, rolling and heat treatment to obtain steel pipes, when the contents of O and S in the reaction product system are not greater than 0.005wt%, Ce is added. The steel pipe prepared by the above method has the advantages of high strength, high toughness, resistance to sulfide stress corrosion and microbial corrosion, and realizes the integration of structure and function.

The invention discloses a high-entropy alloy based on Al-Nb-Zr-Mo-V-Hf system with integrated structure and function, which belongs to the field of high-entropy alloy materials, and its components are: aluminum: 4-15%; Niobium: 20-30%; Zirconium: 20-60%; Molybdenum: 5-15%; Vanadium: 1-5%, the balance is hafnium (0.01-20.0%) and unavoidable impurities; for the current typical BCC structure Refractory high-entropy alloys such as TaNbMoW, TaNbMoWV, etc. contain a large amount of high-density metal elements, the alloy has high density, high cost, poor room temperature plasticity, and is difficult to be used as a bottleneck problem for structural materials. Alloy research has not given sufficient attention. The present invention proposes a high-entropy alloy based on the Al-Nb-Zr-Mo-V-Hf system, and fully considers the special effect of the Hf element, thereby realizing the structural and functional integration of the high-entropy alloy .

The invention provides a high-damping high-strength high-entropy alloy material with strong corrosion resistance and a preparation method thereof. The high-entropy alloy material is prepared from manganese, chromium, cobalt, and iron as metal raw materials, and the atomic percentages of manganese, chromium, cobalt, and iron in the metal raw materials are respectively 20% of manganese, 15% of chromium, and 5% of cobalt ~20%, the balance is iron. The preparation method of the high-entropy alloy material comprises the steps of: weighing manganese particles, chromium particles, cobalt particles, and iron particles according to the atomic percentage content of manganese, chromium, cobalt, and iron in the metal raw materials of the high-entropy alloy material; Good manganese particles, chromium particles, cobalt particles, and iron particles are put into a vacuum induction furnace, and the vacuum induction furnace is evacuated, and repeatedly flipped and smelted under a protective gas to obtain an alloy liquid; the obtained alloy liquid is processed in a vacuum induction furnace Insulation treatment: casting the alloy liquid after insulated to obtain an alloy ingot. The high-entropy alloy material provided by the invention simultaneously has excellent damping performance, mechanical performance and corrosion resistance performance.

The invention discloses a preparation method of graphene powder. The method comprises: 1. Ultrasonic cleaning of graphite powder and vacuum freeze-drying to obtain pretreated graphite powder; 2. Pretreated graphite powder in an atmosphere Carry out intercalation heat treatment under protection; 3. Exfoliate the graphite powder after intercalation heat treatment under low-temperature liquid nitrogen conditions by performing high-speed vibratory shearing ball milling to obtain graphene powder; the invention also discloses a graphene powder Application as reinforcement material in metal composites. The present invention combines vacuum freeze-drying, intercalation heat treatment and ball milling exfoliation under the condition of low-temperature liquid nitrogen, gradually weakens the bonding force between graphite flakes of graphite powder and increases the distance between graphite flakes, and obtains multiple layers of low-density defects by exfoliating layer by layer. The graphene powder distributed in grades avoids environmental pollution, has low equipment requirements and high output, and is suitable for large-scale industrial production of graphene powder; the application of the present invention improves the performance of metal composite materials.