480results about How to "Improve self-healing ability" patented technology

The invention discloses a robot reinforcement learning control method and system based on a gating circulation unit, and relates to the technical field of artificial intelligence. Based on a reinforcement learning state machine, a trained student network is deployed to a real quadruped robot in a zero mapping manner, and movement control of the quadruped robot is realized; the training process of the student network is as follows: building a simulation training terrain environment of the robot, and setting different levels of terrain difficulty for each terrain; based on the distillation learning thought, establishing a teacher network and a student network based on a gating circulation unit, constructing a total loss function, and based on the constructed total loss function, fitting a motor joint angle output by the teacher network through an omnibearing simulation training terrain environment, a large-scale parallel training method and the student network; according to the robot reinforcement learning control method and system, robust motion of the robot in an unstructured terrain is realized, and the robot reinforcement learning control method and system have good anti-interference capability and self-recovery capability for a dynamic environment in which traditional control cannot be competent.

The invention discloses a microencapsulation repairing agent and an intelligent self-repairing ultrahigh-strength ultrahigh-toughness cement-based structural material, the microencapsulation repairing agent is mainly composed of a humidity-responsive outer layer, a pH-responsive middle layer and a temperature-responsive inner layer, and the outer layer is modified with a silane coupling agent. The intelligent self-repairing ultrahigh-strength ultrahigh-toughness cement-based structural material is mainly prepared from the microencapsulated repairing agent, nano carbon black, nano montmorillonite, nano cellulose and other raw materials. According to the invention, by introducing the self-repairing microcapsule with a specific structure and materials such as nano carbon black, nano montmorillonite and nano cellulose, the strength, toughness and durability of the concrete are remarkably improved, and the concrete has an intelligent self-repairing function.

The invention discloses an operation monitoring method and device of an energy internet marketing service system, and relates to the technical field of internet. According to the main technical scheme, the method comprises the steps of obtaining target index data according to a preset frequency, wherein the target index data is used for representing index data related to system operation and business application in an energy internet marketing service system; whether each index in the target index data is an abnormal index deviating from a respective corresponding dynamic baseline is judged, the dynamic baseline is a normal index range obtained after historical data corresponding to each index in the target index data is subjected to periodic clustering analysis, and the normal index range is periodically and dynamically changed; if yes, generating alarm information corresponding to the abnormal index; and determining a specified abnormal case matched with the alarm information in the knowledge graph database, and executing operation and maintenance measures in the specified abnormal case. The main purpose of the invention is to improve the accuracy and efficiency of monitoring the operation of an energy internet marketing service system.

The invention relates to the technical field of coatings, in particular to a mesoporous thermal insulation coating with an infrared heat shielding function and a preparation method thereof.The preparation method comprises the steps that polyurethane-organic silicon emulsion is selected as a base material of the coating, chain extension is conducted on polyurethane prepolymer through a hydroxyl-terminated ternary flame-retardant chain extender, and high-flame-retardant and self-repairing polyurethane-organic silicon emulsion is prepared; hollow silicon dioxide microspheres are selected as a mesoporous material, and the mesoporous material is prepared by a two-step method of performing hydrolytic condensation on phenyltrimethoxysilane and then calcining to remove impurities. The preparation method comprises the following steps: modifying hollow silicon dioxide microspheres to prepare composite hollow silicon dioxide microspheres as a filler, growing cesium-doped tungsten bronze nanoparticles on the surfaces of the hollow silicon dioxide microspheres in situ by adopting a solvothermal method to obtain pretreated hollow silicon dioxide microspheres, and treating the pretreated hollow silicon dioxide microspheres with an epoxy silane coupling agent to obtain epoxidized hollow silicon dioxide. And then grafting a hydroxyl-terminated ternary flame-retardant chain extender by utilizing an epoxy-hydroxyl reaction.

The invention relates to the technical field of AI intelligent routing inspection, in particular to an AI intelligent routing inspection control system, which comprises an optical fiber fracture monitoring module for monitoring operation state data of an optical fiber link in a wavelength division optical transmission system and judging an optical fiber fracture position and fracture degree by using an AI anomaly detection model; the optical power safety regulation and control module is used for automatically reducing the luminous power to a safety level according to the fracture position and the fracture degree of the optical fiber and based on an optical power dynamic regulation and control algorithm; the link recovery detection module is used for judging whether the optical fiber link is recovered or not; monitoring transmission performance parameters of the optical fiber; the communication control module is used for controlling the switching of communication states according to the fault alarm information of the optical fiber fracture monitoring module and the recovery confirmation signal of the link recovery detection module; and an inspection recording module. According to the invention, through the automatic recovery mechanism, the response speed of the system after fracture repair is greatly improved, manual intervention is reduced, and the overall self-healing capability is enhanced.

The invention relates to the technical field of power system fault monitoring, in particular to a power system fault monitoring and active control system and method.The method includes the steps that a three-dimensional model of a power distribution network in a target area is constructed, the power distribution network is divided in a refined mode, power parameters of all segments are analyzed in real time, and the operation fluctuation value of the power distribution network is calculated; the method comprises the following steps: determining whether abnormity exists or not, identifying and determining an abnormal segment when the abnormity of the power distribution network is detected, then analyzing the influence degree of the abnormal segment and carrying out grade division to evaluate the potential threat of the fault to the power distribution network, automatically matching a corresponding fault processing channel according to the grade of the influence degree of the abnormal segment, and executing corresponding control measures. Therefore, the fault source can be accurately identified, the control strategy is actively adjusted according to the actual influence condition of the fault, the influence of the fault on the power system is effectively reduced, and the stability and reliability of the system are improved.

The invention provides a self-adaptive communication equipment fault prediction and maintenance system based on artificial intelligence. According to the system, data analysis and machine learning technologies are utilized, multi-mode sensor data are analyzed in real time, and a fault prediction model is dynamically adjusted to adapt to equipment state changes. Performance evaluation, intelligent maintenance decision, predictive maintenance and fault diagnosis functions and self-healing capability are integrated, and timeliness and accuracy of maintenance are ensured. Through cloud edge cooperative computing, the system quickly responds to data processing, and the security is enhanced. Continuous updating of the knowledge base is maintained, and the system is optimized to adapt to the new technology. The system improves the reliability and maintenance efficiency of equipment, provides a personalized intelligent maintenance scheme for a user, and has wide application prospects and practical values.

The invention discloses a UV photocureable coating as well as a preparation method and application thereof in automobiles, and relates to the technical field of coatings. When the UV photocureable coating is prepared, 4-aminophenylboronic acid is dehydrated to prepare aminated boron oxygen six-ring; carrying out a reaction on the aminated boroxane and diallyl chlorophosphate to prepare functionalized boroxane; the preparation method comprises the following steps: sequentially reacting graphene oxide with 3-chloropropyltriethoxysilane and 1, 3-diallyl-1, 3, 5-triazine-2, 4, 6-triketone, so as to obtain modified graphene; the preparation method comprises the following steps: reacting epoxy resin with 2-butenal thiosemicarbazone to prepare modified epoxy resin; and uniformly mixing the modified epoxy resin, the epoxy acrylate resin, the modified graphene, the functionalized boroxane, the 1, 6-hexanediol diacrylate and the 1-hydroxycyclohexyl phenyl ketone, so as to obtain the UV photocureable coating. The UV photocureable coating prepared by the invention has excellent flame retardant, self-repairing and mechanical properties.

The invention discloses a topological optimization method for an optical storage integrated AC / DC system based on an adaptive algorithm, and the method comprises the following steps: obtaining an initial topological structure and operation parameters of the optical storage integrated AC / DC system, including photovoltaic power generation, configuration of an energy storage system, operation state parameters of a microgrid, and external environment parameters; optimizing and adjusting the topological structure, and dynamically generating a plurality of candidate topological structures according to system operation data and environment change which are acquired in real time; carrying out analogue simulation on the candidate topological structure, and evaluating the stability, power distribution and energy utilization efficiency of the system under different operation conditions; performing reliability analysis on the optimized topological structure, and monitoring and adjusting the topological structure of the system in real time; and performing simulation verification on the adjusted topological structure to obtain an optimal topological structure. According to the invention, the system stability, reliability and fault processing capability can be improved.

The invention belongs to the technical field of building materials, and particularly relates to self-healing high-toughness concrete and a preparation method thereof, in particular to a method for realizing self-healing of the high-toughness concrete by utilizing an excessive precursor alkali-activated gel system, and self-repairing of the cracked concrete is realized by excessively preparing a precursor of a gel material. The toughness of the concrete is enhanced in combination with hybrid fibers, so that the novel self-healing concrete which is low in cost and integrates control and repair is realized. When the amount of the polymer precursor is 900 parts, the tensile strength of the concrete can reach 8.9 MPa or above, the compressive strength can reach 100 MPa or above, the self-healing rate of the concrete in 28 days can reach 98%, and the mass loss rate after 50 freezing and thawing cycles is only 0.66%.

The invention discloses high-performance unsaturated polyester resin, and relates to the field of polyester resin. When the high-performance unsaturated polyester resin is prepared, diatomite and a silver nitrate solution are uniformly mixed to obtain silver-loaded diatomite; then, the silver-loaded diatomite is subjected to a reaction with 3-aminopropyltrimethoxysilane and 3-allyl salicylaldehyde in sequence, and modified diatomite is obtained; the preparation method comprises the following steps: reacting tris (dimethylaminopropyl) amine with 3-chloropropene to obtain a cross-linking monomer; 2-formyl pyridine and 3-aminopropane phosphoric acid are subjected to a reaction, and a flame-retardant monomer is obtained; reacting terephthalic acid, fumaric acid, 1, 3-propylene glycol and a flame-retardant monomer to obtain modified unsaturated polyester resin; and uniformly mixing the modified unsaturated polyester resin, the modified diatomite and a crosslinking monomer to obtain the high-performance unsaturated polyester resin. The prepared high-performance unsaturated polyester resin has excellent flame retardance, antibacterial property, antistatic property, anti-aging property and self-repairing property.

The invention provides a self-adaptive safety self-healing system based on artificial intelligence, and aims to improve the safety protection capability and the self-repairing capability of an information system. The system comprises a client Agent module, a secure transmission module, a data analysis and anomaly detection module, a self-healing strategy management module, an execution module and a monitoring display module. The client Agent module collects data such as system logs, network flow and resource use, and predicts resource changes through a long short-term memory (LSTM) network model. And the secure transmission module adopts a TLS protocol and a block chain technology to ensure the integrity and security of the data. And the data analysis and anomaly detection module identifies threat behaviors through an Isolation Forest algorithm and a deep learning technology, and automatically generates a security event report. And the self-healing strategy management module generates a self-adaptive repair scheme based on an AI analysis result, and the system realizes efficient anomaly detection and self-healing repair through intelligent analysis and self-adaptive adjustment, and is suitable for dynamic security protection in a complex network environment.

The invention belongs to the technical field of paint coatings, and particularly relates to a hydrophobic heat-conducting self-repairing coating and a preparation method thereof. The preparation method of the hydrophobic heat-conducting self-repairing coating comprises the following steps: ultrasonically dispersing a heat-conducting filler and polyethylene glycol in an organic solvent, dropwise adding into a water-borne epoxy resin solution, and stirring to obtain a heat-conducting coating solution; the method comprises the following steps: dropwise adding a liquid A containing polysiloxane and a fluorine-containing monomer into a liquid B containing polyethylene glycol, stirring, carrying out centrifugal suction filtration, and drying to obtain the self-repairing microcapsule. Then adding the self-repairing microcapsules and silicon dioxide into the fluorine-containing polymer solution and / or the hydrophobic resin solution, and carrying out ultrasonic dispersion to prepare a self-repairing hydrophobic coating solution; the heat-conducting coating liquid and the self-repairing hydrophobic coating liquid are uniformly sprayed or spin-coated on the surface of a metal base material in sequence and then are subjected to UV curing, and the hydrophobic heat-conducting self-repairing coating is prepared. According to the method, the process and raw materials are simple, and the prepared coating has heat conduction and self-repairing performance and is excellent in anti-aging performance.

The utility model relates to a flexible wearable liquid metal antenna and wearable electronic equipment, and belongs to the technical field of wearable antennas. Comprising a dielectric substrate, a grounding metal sheet, a feed port metal sheet, a metal floor and an inverted F-shaped groove, according to the dual-band wrist type PIFA antenna, a flexible material PDMS is used as a dielectric substrate, liquid metal EGaIn is used as a radiation material, and the EGaIn is wrapped in a microfluidic channel formed by the PDMS, so that the wearable antenna working at two frequency bands of 2.4 GHz and 5.8 GHz is realized. Compared with a traditional solid metal wearable antenna, the wearable antenna designed on the basis of liquid metal can well receive signals, material fatigue or cracking cannot be caused by repeated bending, and the wearable antenna has high self-repairing capacity and has more advantages in the wearable aspect.

The invention discloses a desktop cloud virtual machine disk fault detection and self-recovery method, and relates to the field of cloud computing and storage. Comprising the steps of taking OpenStack as a cloud desktop virtualization back end, mounting and using an iscsi network disk on a virtual machine, obtaining a network disk fault event through iscsiadmin-msession, analyzing a fault event reason and performing self-recovery according to a current environment state, and sequentially judging whether a network card state is abnormal, whether a network is blocked and whether an iscsi server side is abnormal. And if the network card state is abnormal, carrying out physical network card self-recovery, and if the network is blocked or the iscsi server side is abnormal, adding an iscsi disk reading test process in a virtual machine hard restart process, restarting the virtual machine or carrying out network disk remounting on a disk of which data cannot be normally read.

The present application belongs to the field of medical polymer technology, and in particular, relates to a polyacid polymer hydrogel, and its preparation method and application. The polyacid polymer hydrogel involved in the present application mainly contains a polyacid polymer aqueous phase; the preparation method provided includes first dissolving a polycarboxylic acid polymer in an alkaline solution, then dripping a pH adjuster and stirring, and standing to obtain a polycarboxylic acid polymer hydrogel. Among them, after lowering the pH of the alkaline aqueous solution of the polycarboxylic acid polymer, the polycarboxylic acid chains are entangled during the standing process, and the interaction force between the polymer chains is enhanced to form a polycarboxylic acid polymer hydrogel. This type of hydrogel has a simple source of materials and an easy preparation method, which solves the technical problems that the preparation process of the existing polycarboxylic acid-containing polymer hydrogel is cumbersome, toxic reagents are required, and the product hydrogel lacks adhesion and self-healing.

The invention belongs to the technical field of water resource planning and management, and particularly relates to a method for calculating an effective hydrological connectivity strength index range of a wetland based on an InSAR (Interferometric Synthetic Aperture Radar) technology. The calculation method comprises the following steps: acquiring image data of an area to be calculated; identifying all wetland plaques in the water body area; dividing the wetland plaques into different effective hydrological communication type groups; calculating an elastic force value of each wetland patch; constructing a water level fluctuation-ecological elastic force curve under different effective hydrological communication situations, carrying out segmented fitting on the water level fluctuation to generate a fitting line, calculating the mean value of the elastic force of the wetland plaques under the effective hydrological communication type, generating an elastic force mean value line, and calculating the elastic force mean value line; the two intersection points of the elastic force mean value line and the fitting line are the effective hydrological connection strength index range. According to the method, the wetland plaques of different effective hydrological connection type groups are divided according to the difference of the effective hydrological connection strength, the optimal ecosystem elastic force of the wetland plaques is calculated respectively, and then the effective hydrological connection strength index range is determined.

The invention relates to multi-dynamic-bond synergistic self-repairing polyurethane and a preparation method thereof, and belongs to the technical field of polyurethane. The polyurethane is prepared from the following raw materials: poly (dihydric alcohol), diisocyanate, a pyridine chain extender, catechol and ferric ion salt. A main chain of polyurethane is formed by chain extension of polydihydric alcohol and diisocyanate through a pyridine chain extender, an end group is a catechol group exposed after end sealing of a catechol substance, on one hand, ferric ions and the catechol group form a metal coordination bond, and on the other hand, ferric ions and nitrogen atoms on pyridine form a coordination bond; the polyurethane contains multiple dynamic bonds, including coordination bonds of pyridine and iron ions, coordination bonds of catechol and iron ions, and hydrogen bonds between macromolecular chains. When the material is subjected to external pressure, the material has relatively good damping capacity due to internal friction force in a molecular chain; meanwhile, the polyurethane has good self-repairing capability at room temperature.

The invention relates to the technical field of asphalt, and particularly discloses super-durable self-repairing modified asphalt and a preparation method thereof. The super-durable self-repairing modified asphalt is prepared from the following raw materials in parts by weight: 50 to 70 parts of composite modified asphalt, 35 to 50 parts of acrylate emulsion, 8 to 14 parts of modified polyacrylonitrile fiber, 11 to 18 parts of filler, 12 to 21 parts of self-repairing microcapsule, 4 to 6 parts of thickening agent and 1 to 3 parts of anti-aging agent. The invention relates to a preparation method of super-durable self-repairing modified asphalt. The preparation method comprises the following steps: S1, melting composite modified asphalt at 120-130 DEG C; s2, then adding the acrylate emulsion, the modified polyacrylonitrile fiber, the filler and the self-repairing microcapsule, and mixing and stirring; s3, adding a thickening agent and an anti-aging agent, mixing and stirring, and cooling to room temperature, so as to obtain the super-durable self-repairing modified asphalt. The super-durable self-repairing modified asphalt prepared by the invention is remarkable in self-repairing effect and good in durability.

The invention discloses a preparation method of an oxime ammonia ester modified self-repairing high-gloss hydroxypropyl dispersion. The preparation method comprises the following steps: S1, preparing an oxime ammonia ester modified monomer; s2, adding a solvent into a reaction kettle, and dropwise adding the mixed monomer C, the prepolymer B and an initiator into the reaction kettle; mixing and dropwise adding the mixed monomer D, a carboxyl-containing monomer and an initiator into the reaction kettle; and cooling, adding a neutralizer, adding deionized water for dispersion, and finally preparing the oxime ammonia ester modified self-repairing high-gloss hydroxypropyl dispersion. According to the invention, a two-step method is adopted, a hydroxypropyl dispersion is synthesized in a self-emulsifying manner, and a self-made monomer containing an oxime urethane bond is added, so that the emulsion has a self-repairing capability, can be self-repaired when a workpiece is damaged, and also has high gloss, high weather resistance and excellent chemical resistance; the service time is prolonged, and the maintenance cost is effectively reduced.

The invention relates to the technical field of power distribution network protection, and provides a power distribution network override trip protection method based on a distributed network. S1, arranging multiple layers of intelligent distributed protection devices at different nodes of the power distribution network, wherein each layer of protection device has different fault detection and protection decision capabilities; and S2, realizing localized data processing and fault detection through the edge calculation unit of each protection device, wherein the fault detection carries out real-time fault identification based on a deep learning model. According to the arrangement scheme of the multi-layer intelligent distributed protection device, the protection device is divided into a high-voltage layer, a medium-voltage layer and a low-voltage layer according to the voltage grade and the load importance, the technical effects of step-by-step fault isolation and layered protection are achieved, and compared with the arrangement mode of a unified protection device in the prior art, the protection device has the advantages of being simple in structure and convenient to use. The problem of large-range override tripping is effectively solved, layered response of different levels of protection devices to faults is realized, the fault influence range is further controlled, and the stability of the system is improved.

The invention discloses a soil structure improver containing a compound microbial agent and a preparation method of the soil structure improver. The soil structure improver containing the compound microbial agent is prepared from the following raw materials in percentage by mass: humic acid, the compound microbial agent, vermiculite powder, a seaweed extract, diatomite, polydextrose, pectin, monopotassium phosphate, an organic zinc chelate, a medium trace element supplement and bentonite, wherein the humic acid, the compound microbial agent, the vermiculite powder, the seaweed extract, the diatomite, the polydextrose, the pectin, the monopotassium phosphate, the organic zinc chelate, the medium trace element supplement and the bentonite are matched. According to the soil structure improver disclosed by the invention, through the synergistic effect of the compound microbial agent, the proportion of a soil aggregate structure is effectively increased, the stability and the anti-scouring capability of soil are enhanced, the air permeability and the water-retaining property of the soil are improved, an ideal environment is created for the growth of crop roots, and the microbial agent can be colonized in the soil, so that the soil structure is improved. A good microbial community structure is formed, the biological diversity of the soil is enhanced, the self-repairing capability of the soil is improved, and a healthy soil ecological system can be constructed.

The invention relates to the technical field of rubber additives, in particular to a cross-linking agent for rubber and a preparation method. The cross-linking agent for rubber is prepared from the following raw materials in parts by mass: 5 to 10 parts of polystyrene microspheres, 1 to 5 parts of tetramethyl orthosilicate, 0.1 to 0.5 part of copper sulfate, 1 to 2 parts of a surfactant, 1 to 2 parts of vinyl trimethoxy silane, 0.01 to 0.1 part of an initiator, 2 to 6 parts of vinyl acetate, 1 to 2 parts of cobalt acetate, 0.01 to 0.1 part of yttrium chloride and 1 to 2 parts of graphene oxide. Transition metal salt and rare earth are compounded and loaded on the surface of grafted silicon dioxide, the specific surface area of the metal salt can be effectively increased, the coordination efficiency is improved, the adding amount of the metal salt is reduced, meanwhile, self-repairing of crosslinking and reinforcing functions can be effectively achieved, and the crosslinking agent is high in stability and has higher environmental tolerance.

The invention relates to a frequency converter hot redundancy control method and system, computer equipment and a storage medium, and the method comprises the steps: monitoring the real-time operation states of all frequency converters in a frequency converter system in real time, and carrying out the fault prediction according to an artificial intelligence algorithm and the real-time operation states; dynamically adjusting the load conditions of all the frequency converters according to the corresponding fault prediction results; under the condition that any frequency converter breaks down, the fault frequency converter is automatically isolated, and load redistribution is carried out on the frequency converter which does not break down through a load balancing algorithm; obtaining the fault type of the fault frequency converter, and executing a local repair mechanism to recover the function of the fault frequency converter when the fault type is self-repairable; and after the fault frequency converter is successfully repaired, executing a self-adaptive stable switching-in algorithm, and gradually switching the repaired frequency converter into the system again. The method has the effect of improving the recovery efficiency of the frequency converter system after the fault occurs.

The invention discloses a battery using an adhesive for improving the first effect and circulation of a silicon negative electrode system cell, the adhesive is formed by polymerizing acrylic acid, quasi-acrylic acid and hydroxyethyl acrylate monomer, the hydroxyethyl acrylate monomer accounts for 1.5-3% of the total mass of the monomer, the acrylic acid monomer accounts for 16-58% of the total mass of the monomer, and the acrylic acid monomer accounts for 0.5-1.5% of the total mass of the monomer. The content of the acrylic monomer is 40-82%, the hydroxyethyl acrylate monomer is located in the middle of the polymer, the structural formula of the acrylic monomer is as follows: # imgabs 0 # R1 and R2 are independently selected from any one of H, carboxyl, hydroxyl, methoxyl and phenyl, R3 is selected from any one of cyano and # imgabs 1 #, R4 is selected from one or more of C1-C6 alkoxy, hydroxyl, amino, ester group, acylamino, chloroformyl and acyloxy, and n is 1-3. And R5 is selected from any one of H, carboxyl, hydroxyl, methoxyl and phenyl. The adhesive provided by the invention is strong in adhesive capacity, good in adaptability to volume expansion of a silicon negative electrode, and capable of effectively improving the cycle and the first effect of the battery, and is applied to the battery.

The invention provides an under-forest economic area multi-unmanned aerial vehicle cooperative positioning method, and belongs to the technical field of positioning navigation application. The method comprises the following steps: acquiring an all-sky photo of an under-forest point location, and calculating the crown opening degree of the point location; the hovering positioning time of the unmanned aerial vehicle is set according to the crown opening degree, and under-forest hovering positioning of the base station unmanned aerial vehicle is carried out by using satellite signals; positioning the under-forest sensing unmanned aerial vehicle cluster based on the position information of the base station unmanned aerial vehicle; on the basis of multi-unmanned-aerial-vehicle cooperation of the base station unmanned aerial vehicle and the sensing unmanned aerial vehicle cluster, under-forest positioning signals are explored, and multi-unmanned-aerial-vehicle cooperative under-forest positioning is achieved According to the method, efficient and accurate positioning of the under-forest economic area can be achieved through cooperation of satellite signals and the multiple unmanned aerial vehicles, the position information service of vertical integration of the canopy is promoted, mechanical and automatic support is provided for under-forest planting and breeding, and intensive and efficient development of under-forest economy is assisted.

The invention belongs to the technical field of polyurethane elastomers, and particularly relates to a hollow glass bead / TPU composite material for an air bag of a life jacket and a preparation method of the hollow glass bead / TPU composite material. The polyurethane resin is prepared from the following raw materials in percentage by mass: 48%-61% of polyether glycol, 28%-33% of diisocyanate, 5%-9% of a mixed chain extender, 0.2%-0.4% of a hydrolysis-resistant agent, 0.3%-0.5% of an antioxidant, 0.2%-0.4% of a catalyst and 5%-9% of modified hollow glass beads. The TPU material is firm, durable and not prone to damage, the buoyancy of the TPU material is improved through the modified hollow glass beads, and meanwhile the binding force of the hollow glass beads and TPU is increased. The invention also provides a preparation method thereof.

The invention provides a rapid photoresponse liquid crystal elastomer actuator and a preparation method thereof, and belongs to a liquid crystal elastomer actuator in the technical field of high polymer materials. The liquid crystal elastomer actuator is a uniformly-oriented single-domain high-entropy alloy liquid crystal polymer, and is obtained by longitudinally and uniformly stretching a multi-domain high-entropy alloy liquid crystal polymer and then initiating photopolymerization by ultraviolet light; the multi-domain high-entropy alloy liquid crystal polymer contains dispersed high-entropy alloy and is obtained by cross-linking liquid crystal monomers; the fast photoresponse liquid crystal elastomer actuator is of a hollow radial symmetrical structure. The quick light response liquid crystal elastomer actuator has a full-solar spectrum absorption response function, has excellent plasticity and self-recovery performance, is simple and convenient in manufacturing process, integrates sensing, driving and built-in feedback loops, has high light tracking precision and self-adaptive phototropism, and can be used in the field of light tracking. And a brand new technical approach is provided for research and development of the intelligent soft robot.

The invention discloses a preparation method of a perovskite-based thin film laminated solar cell, and the method comprises the following steps: S1, taking transparent conductive glass as a substrate, and carrying out the spin coating of an electron transmission material on the substrate to form an electron transmission layer; s2, a perovskite precursor solution prepared in advance is spin-coated, and a perovskite absorption layer is obtained after primary heat treatment; s3, depositing a nano silicon dioxide porous interface layer, spin-coating a self-repairing polymer containing ionic liquid, and performing secondary heat treatment to obtain a modified perovskite absorption layer; s4, spin-coating a hole transport layer; s5, performing vacuum evaporation on a metal counter electrode layer to obtain a perovskite top cell; and S6, stacking and compounding the perovskite-based thin film and a crystal silicon bottom cell to form the perovskite-based thin film laminated solar cell. According to the preparation method of the perovskite-based thin film laminated solar cell, the photoelectric conversion efficiency and the stability of the cell are improved, the self-repairing capability and the long-term durability of the cell are enhanced, and the high-standard requirement of commercial application can be met.

The invention relates to the field of hydrogel materials, in particular to a hydrogel dressing as well as a preparation method and application thereof. The deferoxamine mesylate is loaded on the gelatin microsphere material constructed by the gelatin and the genipin, so that the loading dispersion of the deferoxamine mesylate can be benefited, and the added gelatin can be in contact with matrix proteinase-9 in a diabetic foot ulcer microenvironment for degradation so as to induce the release of the deferoxamine mesylate. A first cross-linked network is formed by the 3-carboxyphenylboronic acid modified chitosan and the oxidized hyaluronic acid, and the gelatin microsphere material loaded with the deferoxamine mesylate and the epigallocatechin gallate are coated with the first cross-linked network. The hydrogel dressing realizes controllable release of the deferoxamine mesylate and the epigallocatechin gallate, so that the technical problem of uncontrollable release of the deferoxamine mesylate is solved.