209results about How to "Strong process adaptability" patented technology

This invention discloses a Pickering emulsion based on silk fibroin self-assembled particles and its preparation method. The preparation method includes the following steps: adjusting the pH of the silk fibroin solution to 4.0-4.5, adding NaCl to a final concentration of 0.05-0.1 mol / L, mixing, and then heating to 40-50 °C and allowing it to stand at a constant temperature. Using the obtained silk fibroin self-assembled particle dispersion as the aqueous phase and vegetable oil as the oil phase, the mixture is mixed with excipients and homogenized by high-speed shearing to obtain a primary emulsion. This primary emulsion is then treated by high-pressure microfluidic jet to obtain the Pickering emulsion based on silk fibroin self-assembled particles. This method requires no chemical modification or exogenous reagents, is green and simple, and does not use organic solvents. It can prepare emulsions with high biosafety and high storage stability without emulsifiers, improving process safety and scalability, and broadening its application in the food, cosmetics, and biopharmaceutical fields.

The utility model relates to the technical field of vibration screening equipment, in particular to a square tube cross beam structure with a trapezoid reinforcing plate and vibration screening equipment. The cross beam connecting plates are welded to the two ends of the square tube and used for being connected with a screen frame or an external component; the cross beam trapezoidal plates are symmetrically attached to the side walls of the square tube, and the lower bottoms of the cross beam trapezoidal plates extend outwards to form supporting surfaces; the square plate is fixed at the upper end of the trapezoidal plate of the cross beam and is used for dispersing load; mounting holes are formed in the upper portion of the square plate and used for being connected with a screen bottom beam. The scheme has the advantages of light weight, high fatigue resistance and process adaptability.

The present application belongs to the technical field of carbon fiber composite materials, and particularly relates to a carbon fiber composite material with high-frequency damping performance and a preparation method thereof. Through multi-component synergistic modification of an epoxy resin matrix, a nitrile rubber composition and a boron nitride composition, combined with carbon fiber surface treatment and a segmented curing process, a multi-scale damping energy dissipation network is constructed. The material exhibits excellent damping performance in a high-frequency vibration environment, while also having high mechanical strength and interfacial bonding force, which can significantly reduce the damage risk caused by vibration transmission of sports equipment, and is suitable for high-end sports equipment field, promoting the industrial application of carbon fiber composite materials in high-frequency damping scenarios.

The utility model discloses a numerical control double-shaft drilling and milling tapping device, which relates to the field of numerical control machine tools, and comprises a workbench, the lower surface of the workbench is fixedly connected with a support column, one end of the support column far away from the workbench is fixedly connected with a moving wheel, the upper surface of the workbench is fixedly connected with a protective cover, and a transmission mechanism is arranged in the workbench; a connecting seat is fixedly connected to the lower surface of the fixed seat, a connecting rod is connected to the lower surface of the connecting seat, a drilling and milling head is fixedly connected to the end, away from the connecting seat, of the connecting rod, an electric push rod is fixedly connected to the interior of the drilling and milling head, and a moving piece is fixedly connected to the output end of the electric push rod; the transmission mechanism is embedded in the side wall of the workbench, the connecting base is connected with the connecting rod through the magnetic locking mechanism, the drilling and milling head is made of a carbon fiber composite material and internally provided with a cooling channel, and the effects of the numerical control double-shaft drilling, milling and tapping device which improves the machining precision of the drilling and milling device and is simple in structure and good in heat dissipation are achieved.

The present application provides a kind of online quality monitoring method of traditional Chinese medicine in near infrared combined fluidized bed granulation process, the monitoring method will near infrared spectrum (NIRs) technology be combined with partial least squares (PLSr), and the online monitoring model of key quality attribute (CQAs) in granulation process of Buqi Tongluo Granules (BQTL-G) is constructed.Based on the real-time monitoring data of the model, the key process parameter of peristaltic pump speed is dynamically regulated by negative feedback mechanism through PID controller, the bed collapse problem caused by excessive moisture content in the granulation process is accurately intervened, and the granulation process state is stabilized.The online quality monitoring method of the present application solves the quality uniformity problem commonly existing in the production process of traditional Chinese medicine granules.

The utility model discloses a high-rigidity half-moon groove tool rest unit of a combined lathe and the combined lathe, belongs to the technical field of numerical control combined lathes, and solves the problems that a traditional linear guide rail feeding structure is large in occupied space, poor in rigidity and unstable in machining quality. The tool rest unit comprises a tool rest body, and a guide groove is formed in the circumferential face of the tool rest body and axially penetrates through the tool rest body. A sliding groove plate matched with the guide groove is arranged in the guide groove. The sliding groove plate is shorter than the guide groove and used for bearing a cutter. And the section of the guide groove is half-moon-shaped. Limiting plates are installed on the portions, on the two sides of a groove opening of the guide groove, of the tool rest body respectively, and the limiting plates are pressed on the sliding groove plates so as to limit movement of the sliding groove plates in the radial direction. Due to the fact that the sliding groove and the sliding groove plate are arranged on the peripheral face of the tool rest body, occupied space is reduced, and rigidity and transmission efficiency of the whole structure are improved. The tool rest unit is matched with a narrow space scene of a multi-spindle lathe, and the machining requirements of high precision and high efficiency are met.

The invention relates to a bi-crosslinking cyanate ester-epoxy blended adhesive and a preparation method thereof, and relates to the technical field of high polymer materials, the adhesive comprises the following components in parts by weight: 45-85 parts of cyanate ester resin, 5-35 parts of epoxy resin, 0-20 parts of a reactive diluent, 2-6 parts of a bi-crosslinking curing agent and 0-50 parts of a functional filler, the bi-crosslinking curing agent has the following structure: R is alkyl, aliphatic amine or aryl; r'is a primary amino group and / or a secondary amino group, R ''is-C = N and / or-OCN, m is an integer from 1 to 3, and n is an integer from 1 to 2. By adding the double-crosslinking curing agent containing the amino group and the cyano group, the technical problems of high curing temperature, large stress after curing, poor temperature resistance of epoxy resin and the like of the existing cyanate ester resin system are solved, and the curing temperature, the bonding strength and the temperature resistance of the adhesive are balanced. The adhesive can be cured at the temperature lower than 90 DEG C, and has high glass transition temperature, low thermal weight loss and excellent adhesive property.

The utility model discloses a rotary cylinder cooling machine which comprises a cooling machine body, and a plurality of screening mechanisms are arranged at the discharging end of the cooling machine body. The cooling machine comprises a cooling machine body, a supporting frame is fixedly installed at the bottom of the cooling machine body, the discharging end of the cooling machine body is fixedly connected with an annular tongue, and a plurality of positioning rods are arranged on the outer surface of the annular tongue and fixedly connected with the cooling machine body; each screening mechanism comprises a base, and a positioning and clamping assembly is installed on each base. According to the utility model, the supporting frame, the annular tongue, the positioning rod, the base, the positioning and clamping assembly, the stock bin, the mounting ring, the annular filter cartridge, the annular butt joint groove, the positioning hole, the limiting rod and the butt joint tongue are arranged to form an extensible screening unit group, a user can freely increase and decrease the number of screening mechanisms according to the material grading requirement, and each grade of screening mechanism corresponds to different screening hole specifications; the materials can be subjected to multi-stage screening (such as coarse, medium and fine three-stage separation) in single treatment.

This invention provides an aluminum strip embedded textile transition layer connection structure, its preparation method, and its application, belonging to the field of dissimilar material connection and composite material structure manufacturing technology. The connection structure includes a target connecting aluminum plate, an integrated aluminum connector, and a composite material connector. The integrated aluminum connector is composed of multiple embedded aluminum strip segments and a welded substrate segment. The embedded aluminum strip segments are embedded between layers of composite fiber fabric and cured together with a thermosetting resin matrix to form a textile transition layer. The welded substrate segment is exposed outside the composite material connector and forms a metallurgical weld connection with the target connecting aluminum plate. This structure avoids damage to the composite material caused by drilling in traditional mechanical connections, achieves efficient load transfer to the aluminum plate through the textile transition layer and aluminum connector, and improves the load-bearing capacity and reliability of the connection between the composite material and aluminum alloy components. It is suitable for composite-metal hybrid structure connections in aerospace, rail transportation, and automotive lightweighting fields.

The application discloses a kind of invisible optical cable and preparation method thereof, belong to optical cable technical field, including multiple optical fibers, and sleeve is arranged at the periphery of multiple optical fibers, and sleeve is prepared using transparent material.The woven yarn is further provided in the sleeve in the application, and the woven yarn is in mesh structure, and multiple optical fibers are sequentially and side by side arranged in the mesh structure of woven yarn.In the application, the arrangement order of each optical fiber is naturally limited by the mesh structure of woven yarn, and each optical fiber can be accurately distinguished by observing the position of optical fiber in the mesh during construction, without any color marking or special identification equipment, especially suitable for multi-core invisible optical cable.The yarn of woven yarn is extremely thin, and the mesh structure is invisible under normal visibility, the overall transparency of optical cable is high, and it is perfectly integrated with indoor environment, maintaining excellent invisible effect.

The invention provides a control method and system for local gluing of the outer surface of a metal round piece, and belongs to the technical field of intelligent gluing control. The method comprises the following steps: firstly, acquiring a current outer surface image and process task data of a to-be-glued metal round piece, and determining a target local gluing area, a state detection area and a target glue line parameter; releasing detection glue points in a state detection area, acquiring a detection dynamic image sequence, and extracting spreading length, edge expansion rate, necking rate, broken wire time delay and retraction displacement to form a dynamic morphology feature sequence; inputting the dynamic morphology feature sequence into a glue solution rheological state inversion model, and solving a current glue solution rheological state parameter; local gluing is carried out according to the formal gluing control instruction, and a local glue line forming result is output in combination with an outer surface result detection record. According to the method, the current flowing state of the glue solution can be recognized before formal gluing, gluing control parameters are synchronously adjusted according to the current flowing state, and the forming stability of local gluing glue lines on the outer surface of the metal round piece is improved.

This invention relates to a method for preparing low-alkali, high-purity silicon-aluminum micropowder from lithium slag, belonging to the field of solid waste recycling technology. The method includes: desulfurization: pulping and desulfurizing the tailings from the sulfuric acid lithium extraction process to obtain gypsum slag and desulfurized lithium slag; classification: classifying the desulfurized lithium slag to obtain coarse and fine particles; potassium and sodium removal and iron removal: removing potassium and sodium from the coarse particles to obtain alkali-rich slag and low-alkali desulfurized lithium slag, then removing iron from the low-alkali desulfurized lithium slag; directly removing iron from the fine particles; and grinding and mixing to obtain low-alkali, high-purity silicon-aluminum micropowder. Based on the specific segregation and enrichment patterns of potassium and sodium minerals in lithium slag, this invention achieves deep dealkali removal through a multi-stage combined process of "desulfurization-classification-potassium and sodium removal-iron removal," resulting in a product with Na₂O + K₂O < 0.5%, meeting the requirements for electronic-grade glass fiber raw materials, while simultaneously achieving full-component resource utilization.

The invention belongs to the technical field of low-pressure casting, and particularly relates to a low-pressure casting device and method for a large-size aluminum alloy shell metal outer mold composite sand core, the height of a large-size aluminum alloy shell casting is not lower than 600 mm, the inner diameter is not lower than 700 mm, and the average wall thickness is 14-20 mm; the low-pressure casting device comprises a mold system, a sand core system, a pouring system, a chilling block system and a dead head, the pouring system adopts a bottom pouring and stepped pouring mode, the structure of the pouring system is designed according to the height, the transverse characteristic size and the average wall thickness of a casting, the pouring system is deeply optimized, and the casting quality is improved. By adopting the design mode of multiple sprues and circumferentially and uniformly distributed transverse sprues, it is ensured that a feeding channel is solidified later than a casting, the pressure maintaining pressure is continuous and effective, the casting defects of cold shut, air holes, shrinkage cavities, shrinkage porosity and the like are avoided, the mechanical property and air tightness of the large-size casting are remarkably improved, and the cost rate is increased.

This invention discloses a traction winding and unloading device, belonging to the field of roll material production technology. The device includes a traction device, a floating fly knife device, a dual-shaft alternating winding device, and an unloading device. The traction device has edge trimming and tension adjustment functions. The floating fly knife device is equipped with a floating roller assembly and an L-shaped flipping guide groove to achieve clamping traction during cutting and automatic knife lifting after cutting. The dual-shaft alternating winding device realizes alternating winding of the two air-expanding shafts at two workstations through a flipping disc and a clamping assembly, and is equipped with a moving pressure roller that adjusts with the roll diameter. The unloading device consists of a moving trolley, a shaft pulling device, and an unloading trolley, which can automatically complete full roll grabbing, shaft pulling, air release unloading, and transfer. This invention realizes full-process automation from traction, edge trimming, fixed-length cutting, continuous winding to automatic unloading, and has the advantages of high production efficiency, good cutting and winding accuracy, stable operation, and wide applicability. It is suitable for the continuous production of roll materials such as film, non-woven fabric, paper, and aluminum foil.

The invention relates to a post-treatment method for a mercury-based II-VI group nanocrystal with a protective layer formed by chemical oxidation, and solves the problems of poor stability and photoelectric property degradation of the mercury-based II-VI group nanocrystal caused by surface oxidation, ligand desorption and environmental sensitivity. An oxide protection layer with the thickness of 1-3 nm is formed on the surface of the nanocrystal, the long-term stability and the photoelectric property of the nanocrystal are improved, and the method comprises the specific steps of centrifugal purification of the nanocrystal, preparation of an oxidizing agent solution, controllable oxidation reaction, functional ligand surface modification and purification treatment. The oxidation layer is ensured to be compact and stable by accurately adjusting the concentration of the oxidant, the reaction temperature and the reaction time. According to the method, oxygen and moisture permeation is effectively blocked, surface defects are reduced, the quantum yield and the photoelectric property are improved, and the method is widely applied to the fields of post-treatment of mercury-based II-VI group nanocrystals and photoelectric devices.

The invention relates to the field of aluminum alloy die casting, in particular to a die casting device for aluminum alloy shell machining, which comprises a base, and a tail plate is mounted on one side above the base. The movable mold plate reciprocates in the mold closing process to drive the push rod to drive the piston to move in the sealing tank, so that alternate change of positive pressure and negative pressure is formed in the sealing tank; in the process, the PCL control cabinet cooperatively controls opening and closing of the feeding hole and the discharging hole, automatic extraction and conveying of the liquid raw materials are achieved, and finally the liquid raw materials are injected into the charging barrel. And then, the injection cylinder drives the injection rod to inject the raw materials into the mold closing cavity at high pressure to complete die-casting forming, and the full-automatic process from feeding to forming is achieved. In addition, the screw is driven to move axially by rotating the internal thread cylinder, the initial position and stroke of the piston can be adjusted, and therefore the single suction amount of the sealing tank is changed, the sealing tank can flexibly meet the differentiated requirements of different die-casting parts for the raw material amount, and accurate and controllable feeding is achieved.

The invention discloses a hot-coated high-barrier heavy-wrapping roll film and a preparation method thereof. Belongs to the technical field of packaging materials. The roll film sequentially comprises an outer-layer base material film, a middle barrier layer and an inner-layer heat sealing film. The middle barrier layer is formed by drying and curing nano-composite barrier liquid coated on the inner surface of the outer-layer base material film; the nano-composite barrier liquid comprises polyvinyl alcohol, a surface-modified inorganic nano-material dispersion liquid, a polymer emulsion, a cross-linking agent and a wetting agent. After being preheated, the barrier liquid is coated by micro gravure, is dried through three stages of rapid shaping, deep crosslinking and high-temperature densification in sequence, and is finally compounded with an inner-layer heat-sealing film in a solvent-free manner. Through precise coupling of a synergistic effect among specific components and a multi-stage drying process, the roll film has excellent initial oxygen barrier property, water vapor barrier property, excellent stability in a high-temperature and high-humidity environment and high barrier stability after simulating a dynamic mechanical load of heavy packaging and transportation.

This application discloses a deep-hole gun drilling method for through holes in high-voltage switch shaft parts, relating to the field of turning technology. The method includes acquiring cutting data for deep-hole gun drilling; obtaining a blockage index based on the cutting data; obtaining a cross-sectional area reduction rate based on the blockage index; obtaining a target feed rate based on the cross-sectional area reduction rate; and adjusting the feed rate of the deep-hole gun drill to the target feed rate. This application constructs a blockage index to quantitatively characterize the blockage development state of the chip removal channel by collecting core cutting data such as the cutting fluid return pressure curve. Then, the cross-sectional area reduction rate of the chip removal channel is derived from the blockage index. Finally, the target feed rate of the deep-hole gun drill is dynamically matched and adjusted based on this reduction rate, achieving real-time, precise, and adaptive control of the feed rate during machining.

The present application relates to the field of organic electrochromic materials, and particularly relates to a transparent conductive material, a preparation method and application. The transparent conductive material simultaneously introduces two independent carbonyl groups in a molecular main chain, and realizes accurate coordination of energy level, polarity and charge transport performance through differential regulation of oxygen or nitrogen atoms. The polymer can be used as an ion storage layer, an electrode modification layer or an active functional layer in an electrochromic device, can realize fast reversible optical modulation at a low voltage (±1.0 V), has a high optical contrast (ΔT 550 > 65%), a short response time (<2 s) and excellent cycle stability (more than 3×10 4 times of cycles, a retention rate >95%), and has a wide application prospect in the fields of intelligent display, energy-saving buildings and flexible electronics.

The invention discloses a method for degreasing and sintering a photocuring molded ceramic green body. The method comprises the following steps: cleaning and post-curing the photocuring molded ceramic green body; then the treated ceramic body is placed in an atmosphere sintering furnace, the whole process of degreasing and sintering is continuously completed, the whole process is an integrated process of a low-temperature degreasing slow release stage, a medium-temperature transition connection stage and a high-temperature sintering stage which are sequentially conducted, and the ceramic part with the solid ceramic can be obtained. According to the method for integrally and continuously completing degreasing and firing of the ceramic green body, the microstructure evolution of the ceramic green body is more coherent, the defects of cracking, bubbling, deformation and the like of the ceramic green body are greatly reduced, meanwhile, the process is simplified, and the efficiency is improved.

The invention discloses a toughened modified flame-retardant epoxy resin composition which is prepared by the following steps: S11, performing thermal reaction on 50-90 parts by weight of flame-retardant epoxy resin, 5-20 parts by weight of an epoxy diluent and 10-25 parts by weight of a toughening agent under the action of 0.01-0.5 part by weight of a catalyst to prepare toughened modified flame-retardant epoxy resin A; s12, heating and mixing 0-5 parts of an auxiliary agent, 10-40 parts of a flame retardant, 3-15 parts of a pigment and the toughened modified flame-retardant epoxy resin A, and then adding a chain extender for thermal reaction copolymerization to obtain toughened modified flame-retardant epoxy resin B; s13, mixing 1-10 parts of a latent curing agent and 1-6 parts of an accelerant with the toughening modified flame-retardant epoxy resin B to prepare a toughening modified flame-retardant epoxy resin composition; a composite material product prepared from the toughened modified flame-retardant epoxy resin composition and a fiber reinforcement can meet airworthiness standard requirements such as BMS8-2 Class3 Grade A TYPE 45 and the like, and is suitable for manufacturing of aircraft cargo hold wallboards.

This invention provides a submerged arc welding wire suitable for high heat input welding of 50–150 kJ / cm and its application, belonging to the field of welding materials technology. The submerged arc welding wire provided by this invention comprises the following chemical composition: C: 0.07–0.12%, Si≤0.09%, Mn: 1.70–1.95%, P≤0.012%, S≤0.005%, Ni: 0.55–1.00%, Mo: 0.40–0.58%, Ti: 0.11–0.24%, Nb≤0.05%, V: 0.03–0.04%, Ca≤0.0015%, B: 0.0005–0.0045%, Ce≤0.030%, and the balance Fe. The submerged arc welding wire provided by this invention meets the requirements for the mechanical properties of the deposited metal at a heat input of 50–150 kJ / cm, and is applicable to the production of large welded structural components and high-efficiency welding manufacturing.

This invention discloses an online visual inspection and laser dressing closed-loop control system for grinding wheel allowance, comprising a multi-axis precision linkage platform, a laser ablation dressing unit, a dual-modal composite visual sensing component, a real-time data processing unit, and a closed-loop feedback control unit. The dual-modal composite visual sensing component consists of a structured light scanning module and an infrared thermal imaging module connected by a coaxial optical path, and uses the same trigger signal to achieve spatial alignment and temporal synchronous acquisition, obtaining registered geometric point cloud and temperature field data of the grinding wheel surface. The real-time data processing unit incorporates a real-time dynamic decoupling model for thermally induced deformation, calculates the thermal expansion displacement field based on the temperature field, and separates it from the comprehensive radial deviation of the geometric point cloud to obtain the true geometric allowance. The closed-loop feedback control unit generates adjustment commands based on the deviation between the true allowance and the target contour, achieving high-precision closed-loop dressing. This invention solves the technical challenge of detecting thermal expansion interference accuracy during laser dressing, improving dressing accuracy and consistency.

This invention provides a high-parameter SiC / SiC ceramic matrix composite material, relating to the field of aerospace high-temperature structural materials. This high-parameter SiC / SiC ceramic matrix composite material is composed of a SiC fiber preform, an interface phase, and a SiC matrix; the interface phase is a BN layer or a PyC+BN composite gradient layer; the SiC fiber preform adopts a 3D orthogonal braided or needle-punched structure, with a fiber volume fraction of 45%–55%; the SiC matrix is ​​prepared by a CVI+PIP composite process, with a matrix porosity ≤5%. The preparation method includes four main steps: SiC fiber preform preparation, interface phase deposition, SiC matrix densification, and environmental barrier coating. By optimizing the preform braiding structure, interface phase type, and matrix composition, combined with specific preparation processes, the composite material meets the requirements of high mechanical properties, high high-temperature oxidation resistance, high density, and high thermal conductivity. This preparation method, through CVI+PIP composite process optimization, nano-dispersed phase addition, and gradient interface phase design, overcomes existing process bottlenecks and achieves the industrial-scale preparation of high-performance composite materials.

The application discloses a kind of based on three-dimensional phase diagram straight writing line topography regulation and control method, device, equipment and medium, it is related to printing technical field, comprising: by obtaining the rheological test result of different viscosity ink, printing process parameters and line form characterization data, apparent viscosity and boundary parameter are obtained by integration and power law fitting, construct with normalized height, normalized velocity, apparent viscosity as three-dimensional dimension process phase diagram, then by matching adaptive parameter or ink rheological property obtains target form.This introduces apparent viscosity as the third dimension, optimizes the limitation that two-dimensional phase diagram only adapts specific viscosity ink, quantifies the correlation of process parameters, rheological property and line form, only three core parameters can realize cross-ink system form accurate prediction and regulation, compatible with multiple viscosity inks, significantly reduce parameter optimization time consumption, avoid experience trial and error, accurately identify material process window, provide quantitative target for ink formula optimization, improve printing process adaptability.

This invention discloses an apparatus and method for preparing composite thin films for solar cells. The apparatus includes a lower conveying mechanism, a middle coating mechanism, and an upper adsorption mechanism. A friction mechanism generates static electricity on the surface of a lifting slide to adsorb the thin film. A cutting blade cuts the film to be processed, which is then transferred to the lifting slide surface by a film suction cup. An internal electric cylinder pushes the film off and onto a conveyor belt for automatic unloading. The method includes: electrostatic preparation, lifting slide resetting, film cutting, film adsorption and transfer, film unloading and conveying, and end clamping preparation. This invention achieves automatic cutting, electrostatic adsorption, transfer and bonding, and continuous conveying of the thin film through an integrated design, improving the efficiency and positioning accuracy of thin film composite preparation, and is suitable for the automated production of solar cell materials.

The utility model discloses an assembling structure of a steel bar four-way three-dimensional hoop, which comprises a vertical hoop, a transverse hoop is arranged on the lower side of the vertical hoop, a vertical hoop is arranged on the right side of the vertical hoop, and a longitudinal hoop is arranged on the right side of the vertical hoop. Through the steel bar four-way three-dimensional hoop in an assembled combination form, grounding connection operation can be carried out on a plurality of steel bars, the device is simple in structural assembly, the steel bar grounding connection operation can be completed by only one person, the construction efficiency of the device is effectively improved, meanwhile, when the device is used for grounding connection of the steel bars, cutting-off treatment does not need to be carried out on steel bar connection nodes, and the construction cost is reduced. And the process application range is wider, a power source and a tool are not needed for steel bar grounding assembly, the device application construction scene is wider, the assembly joints of the steel bars are fixed through four bolts, and the process fault tolerance is high.

This invention discloses an impact-resistant plastic granule and its preparation method, belonging to the technical field of polyamide modified materials. The preparation method includes the following steps: raw material drying pretreatment, premixing and activation treatment, overall material blending, twin-screw oriented melt extrusion, cooling granulation, and post-treatment sieving. A twin-screw extruder, combined with a stretching die, induces hydroxyapatite (HAP) nanowires to orient orderly along the melt flow direction, forming a biomimetic enamel-like framework structure. Simultaneously, utilizing the B-N coordination between the terminal amino groups of polyamide and boric acid, and the dehydration esterification reaction of the terminal hydroxyl groups introduced by the hydroxylated graft compatibilizer with boric acid and HAP surface hydroxyl groups, dynamic borate ester covalent bonds and B-N coordination bonds are generated in situ, supplemented by Ca coordination bonds and hydrogen bonds to construct a multi-interface bonding system. This invention completely eliminates the use of elastomer toughening agents, increasing the notched impact strength of the cantilever beam from 5 kJ / m of pure PA6 to 12–15 kJ / m, and the flexural modulus from 2.5 GPa to 3.2–3.8 GPa, achieving a simultaneous improvement in rigidity and toughness.

The invention discloses a preparation method of a carbon dioxide hydrogenation reaction catalyst. The preparation method of the oxygen carrier comprises the following steps: placing one or more of particles manually loaded with a copper element or natural ore particles and blank alumina pellets in a fluidized bed reactor according to a ratio, introducing methane gas, and jointly fluidizing at 600 DEG C for 2 hours; and after the reaction is finished and cooling, introducing nitrogen, and adjusting the gas speed until particles are layered to obtain the product catalyst. According to the method, inert particles which are originally wasted in the chemical looping combustion industry can become core components for preparing the catalyst, a special carrier does not need to be additionally purchased, the raw material cost of the catalyst is remarkably reduced, active elements on the surfaces of the prepared particles are uniformly loaded, the wear rate is smaller than 0.2% / h, and the method is a catalyst preparation method oriented to industrial application.