22results about How to "Fast self-healing" patented technology

The invention discloses a self-repairing wave-absorbing composite material as well as a preparation method and application thereof. The self-repairing wave-absorbing composite material provided by the invention comprises the following components in percentage by mass: 30-80% of a polyurethane matrix; 20%-70% of composite wave absorbing powder; the composite wave-absorbing powder is prepared by performing plasma ball milling on graphene oxide and soft magnetic metal powder. The preparation method of the self-repairing wave-absorbing composite material comprises the following steps: 1) preparing a polyurethane prepolymer solution; and 2) dispersing the composite wave-absorbing powder in a polyurethane prepolymer solution, injecting the solution into a mold, and carrying out curing molding to obtain the self-repairing wave-absorbing composite material. The self-repairing wave-absorbing composite material disclosed by the invention is excellent in wave-absorbing property and mechanical property, the material can realize quick self-repairing, the stability of the wave-absorbing property and the mechanical property is ensured, and the composite material is suitable for the fields of 5G communication, new energy automobiles, national defense and military industry and the like.

The invention discloses a heavy anti-corrosion coating containing polyurethane microcapsules, a preparation method of the heavy anti-corrosion coating and a coating. A primer comprises a component A and a component B. The component A comprises epoxy resin; a solvent; bentonite; a microcapsule; the flaky basalt scales are coated with the polydopamine; zinc powder; steel slag shield powder; soybean lecithin; the component B comprises a solvent; a polyamide resin; the intermediate paint comprises a component A and a component B. The component A comprises a solvent; a hydroxy acrylic resin; an epoxy resin; bentonite; soybean lecithin; a microcapsule; the flaky basalt scales are coated with the polydopamine; micaceous iron powder; titanium dioxide; carbon black; the component B comprises a solvent; a polyamide resin; the finish paint comprises a component A and a component B. The component A comprises organic silicon modified acrylic resin; a silicone resin; hollow microspheres; the flaky basalt scales are coated with the polydopamine; titanium dioxide; soybean lecithin; fumed silica; a solvent; a catalyst; and the component B comprises a curing agent and microcapsules.

The invention relates to the technical field of metal corrosion prevention, and particularly discloses a titanium alloy bolt surface aluminum coating coating method capable of improving corrosion resistance. A titanium alloy bolt surface aluminum coating coating method capable of improving corrosion resistance comprises the following steps that a titanium alloy bolt is subjected to cleaning and sand blasting pretreatment; the preparation method comprises the following steps: adding the aluminum powder and the benzaldehyde resin into the solvent, mixing and stirring, continuously adding the polytetrafluoroethylene micro powder, the diluent and the self-repairing microcapsule prepared in advance, and continuously stirring until the mixture is uniform, the prepared anti-corrosion aluminum coating is sprayed to the surface of the titanium alloy bolt, after the surface of the coating is dried, curing is conducted for 55 min to 65 min at the temperature of 180 DEG C to 200 DEG C, and the aluminum coating is obtained; the self-repairing microcapsule is prepared by mixing a microcapsule A and a microcapsule B, wherein the microcapsule A is prepared by wrapping a polyurethane prepolymer with polyvinyl butyral as a shell layer, and the microcapsule B is prepared by wrapping a curing agent support with polyvinyl butyral as a shell layer. The aluminum coating prepared through the method has the advantages of being good in corrosion resistance and durability.

According to the multifunctional conductive injection hydrogel OQG provided by the invention, through dynamic Schiff base crosslinking between oxidized dextran (Dextran) and quaternary ammonium salt chitosan (QCS), enhancement by using polydopamine modified reduced graphene oxide (rGO (at) PDA) and loading of polydopamine encapsulated asiaticoside (AC (at) PDA), the obtained hydrogel has injectability, is suitable for irregular wounds, can be quickly self-healed, and has the advantages of good biocompatibility and good biocompatibility. And the wound adhesive force is relatively good. In addition, the composite hydrogel also has antioxidant and antibacterial activity, and can relieve inflammation and prevent infection. The incorporation of conductive reduced graphene oxide further promotes the delivery of endogenous electrical signals, stimulates cell migration and tissue regeneration, while also maintaining the release of AC to modulate collagen deposition and angiogenesis. In-vitro evaluation proves that the hydrogel disclosed by the invention has cell compatibility for promoting cell migration. Rat wound assessment results show that the multifunctional hydrogel can accelerate wound healing, reduce inflammation and reduce scars.

The embodiment of the invention relates to an MOF (Metal Organic Framework) material, a preparation method thereof, acid-loaded inorganic salt sol and peroxide explosive detection application, and belongs to the technical field of fluorescence detection materials. The preparation method of the acid-loaded inorganic salt sol capable of cyclically detecting the peroxide explosive comprises the following steps: putting an MOF material and a film dispersion polymer into a solvent, so that the film dispersion polymer wraps the MOF material, and uniformly mixing to obtain gel; and adding acid into the gel, and reacting to load the acid on the gel to obtain the acid-loaded inorganic salt sol. The acid-loaded inorganic salt sol in the embodiment of the invention shows extremely high sensitivity, and the lowest detection limit can reach 10 nanograms (taking TATP as an example); in addition, the material shows excellent performance of resisting photooxidation quenching (namely resisting photobleaching) in a test environment, and can be quickly self-healed; even if the material is continuously tested for more than 500 times, the material can still keep activity and can be recycled without being damaged.

The present invention discloses a three-level gate-type inland river valley flood avoidance dark harbor ecological protection system, which includes a river channel and a slope protection. The river channel includes a dry season river channel and a flood riverbed. A dark harbor is built below the flood riverbed. The dark harbor includes a dark harbor cabin. The dark harbor cabin is built with a first waterway and a second waterway, and the second waterway is located below the first river channel. The dark harbor cabin is provided with an open channel waterway and an infiltration channel waterway. A seepage pipe is laid in the infiltration channel waterway. The open channel waterway connects the upstream water source of the river channel and the dark harbor cabin. The design of the present invention is scientific and reasonable, and the operating cost is low. It can maintain the natural state of the river channel and the flood sedimentation beach, and can also use the principle of the natural drop of the river channel to provide escape and protection for fish and other aquatic organisms in the river channel, thereby reducing flood damage. When the river channel is cut off during the dry season, the dark harbor has the function of replenishing water sources and storing water for the river channel, thereby realizing the protection of the inland river valley ecosystem, so that its ecosystem can be quickly self-repaired.

The invention discloses a preparation method of an impact-resistant elastic conductor material for 3D printing, and the method comprises the steps: taking silver particles / silver nanosheets as a conductive phase, and taking polyboron dimethyl siloxane as an impact-resistant material; by adding the polyhydroxy low-boiling-point solvent, the density of B-O dynamic cross-linking bonds in the polyboron dimethyl siloxane is reversibly adjusted, meanwhile, the number of silicon hydroxyl is reversibly increased, the hydrogen bond density is improved, the printability of the PBS is enhanced, and meanwhile, the cushioning effect of the PBS is not affected. According to the invention, the reduction and recovery of B-O density are controllable based on a reversible reaction principle of a polyhydroxy low-boiling-point solvent and a B-O dynamic cross-linking bond, and meanwhile, due to the seepage effect of silver powder particles / silver sheets, the Ag / PBS impact-resistant elastic conductor shows excellent conductivity. After the polyhydroxy low-boiling-point solvent in the printed pattern is subjected to vacuum drying, the B-O dynamic crosslinking bond density is recovered, and the Ag / PBS impact-resistant elastic conductor recovers good shear thickening effect, conductivity, sensing performance and self-repairing performance.

The invention relates to a petal-type power distribution network fault self-healing method based on a double-layer optimization model. The method comprises the following steps: S1, analyzing a PIES access petal network fault blocking mechanism; s2, establishing a double-layer optimization model based on'reconstruction-excitation '; s3, solving a lower layer optimization model based on the excitation type DR; and S4, designing a petal net dynamic fault self-healing strategy process based on the double-layer optimization model. According to the method, rich contact resources of the petal net are fully utilized, and the economical efficiency of the motivation type DR is improved; the potential that PIES participates in fault self-healing by utilizing the advantages of multi-energy complementary power supply is fully excavated, the benefits of the petal net and the PIES are balanced through a master-slave game, and the coupling relationship among multiple subjects is enhanced; the double-layer optimization model complements each other, is suitable for various fault scenes of the petal network, effectively eliminates fault blocking, gives consideration to reliability and economical efficiency, and has certain practical engineering value due to the feasibility, the optimal configuration of PIES energy in the space-time dimension and the uninterrupted continuous operation of important loads.

This invention discloses a self-healing elastomer, belonging to the field of new materials technology. The invention utilizes a one-pot method to prepare the elastomer using hydroxyl-terminated prepolymers, isocyanates, chain extenders, metal ions, and crosslinking agents. The elastomer contains a rich multi-dynamic network of H bonds, metal coordination bonds, and disulfide bonds, resulting in a self-healing elastomer. This invention reduces the difficulty of preparation and improves the excellent properties of polyurethane elastomers, such as heat resistance and solvent resistance, through crosslinking. Simultaneously, it can achieve rapid self-healing at a low temperature of -10℃ and exhibits good mechanical properties.

The invention relates to the technical field of sealants, and discloses a sealant for a hyperbaric oxygen chamber and a preparation method thereof, the sealant comprises 50%-60% of matrix resin, 13%-17% of a flexibilizer, 9%-13% of a curing agent, 5%-9% of a self-healing material, and 10%-20% of other materials; wherein the self-healing material comprises 3%-5% of an epoxy block copolymer and 2%-4% of a temperature response microcapsule. The preparation method of the sealant comprises the following steps: mixing the matrix resin, heating the polyurethane prepolymer to 70-80 DEG C, adding the epoxy resin, and stirring for 30 minutes to fully mix to form the matrix resin; adding other materials, namely sequentially adding the toughening agent, the self-healing material, the filler, the auxiliary agent, the curing agent and the catalyst; cross-linking and curing: carrying out cross-linking and curing layer by layer in the mold; and degassing treatment: placing the mixture in a vacuum degassing device, and keeping vacuum for 20 minutes to remove bubbles so as to form the sealant.

The invention discloses an underwater adhesive gel and a preparation method and application thereof.The preparation method of the underwater adhesive gel comprises the following steps that free radical copolymerization is conducted on 2, 2, 3, 4, 4, 4-hexafluorobutyl acrylate and N-isopropyl acrylamide in ionic liquid, and fluorine-containing ionic gel is prepared. And the copolymerized tough fluorine-containing gel material of the HFBA and the NIPAM is prepared. Due to the hydrophobicity of the fluorine-containing polymer and the ionic liquid, the interaction of ions and dipoles and the synergistic effect of molecular entanglement, the FIG has excellent water resistance, strong underwater binding power, excellent self-healing capability, excellent underwater stability and the like.

The present invention relates to the technical field of plant leaf sampling equipment, and specifically to a leaf cutting and sampling device for forestry monitoring, comprising a frame, a mobile component, a sampling tool, a suction and holding component, a first acquisition module and a controller, wherein the frame is arranged on the mobile component, and the mobile component is used to drive the frame to move. The present invention is provided with a suction and holding component, a sampling tool, a first acquisition module and a controller, and when sampling leaves of a target tree, it is possible to avoid the sampling tool cutting the lateral veins of the target sampling leaves as much as possible, and in the case where it is inevitable to cut the lateral veins of the target sampling leaves, the controller can also calculate the best sampling position, so that the sampling area of ​​the sampling tool in the proposed sampling area adjacent to the target sampling area is minimized, so that the incision length of the lateral veins is shorter, which is conducive to the rapid self-repair of the leaves after sampling, and will not cause significant damage to the target sampling leaves.

The application relates to the technical field of cloud edge cooperation, in particular to a cloud edge cooperation management system for a control center. A preprocessing unit is used for generating a plurality of fault prototypes according to fault data of edge nodes and constructing a global fault library on a cloud node; a fault unit is used for setting an edge fault library and detecting fault prototypes; the fault unit comprises a node clustering module, which is used for dividing the edge nodes into a plurality of node clusters and deriving an edge fault library of each edge node from the global fault library; a preloading module is used for comparing running parameters of the fault prototypes with real-time running data, and a repair strategy is loaded when a similarity threshold is reached; an edge detection module is used for detecting the edge fault library after detecting a fault; a global detection module is used for bidirectional scanning detection of corresponding fault prototypes in the global fault library; and a repair unit is used for repairing. The problems of slow fault detection speed and high cloud resource occupation are solved.

The invention discloses self-repairing abrasion-resistant concrete based on a heat-shrinkable fiber net and electromagnetic induction self-repairing fibers. The self-repairing abrasion-resistant concrete comprises an abrasion-resistant concrete base body, a cross-linked modified heat-shrinkable fiber net and the electromagnetic induction self-repairing fibers, wherein the cross-linked modified heat-shrinkable fiber net and the electromagnetic induction self-repairing fibers are distributed in the abrasion-resistant concrete base body; wherein the cross-linking modified thermal shrinkage fiber net is a fiber net which is formed by weaving polyester fibers and aramid fibers in sequence and is subjected to cross-linking modification; the electromagnetic induction self-repairing fiber comprises a core material and a wall material, the core material comprises methyl methacrylate and butyl acrylate, and the wall material comprises polylactic acid and nano Fe3O4. According to the invention, the cross-linked and modified heat-shrinkable fiber net is combined with an electromagnetic induction self-repairing fiber technology, so that the stability, the bearing capacity and the abrasion resistance of the concrete can be effectively improved, the controllable self-repairing of concrete cracks is realized, the durability of the concrete is remarkably improved, the service life of the concrete is remarkably prolonged, and the like. A new thought can be provided for preparation of the high-performance abrasion-resistant concrete.

This invention relates to the field of vehicle controller technology, specifically providing a heterogeneous multi-core vehicle controller and its core dumping method and electronic device. The method includes: in the event of a first fault in the real-time core of the heterogeneous multi-core system, directly writing critical fault data from the fault location into the reserved memory of Double Data Rate (DDR) memory, and marking it as valid data; the DDR memory remains powered on during the fault. After the fault data is written, a hot reset of the heterogeneous multi-core system is triggered; the DDR memory does not participate in the hot reset. After the hot reset, the application core of the heterogeneous multi-core system reads the critical fault data from the reserved memory of the DDR memory based on the valid data identifier, and persistently stores it in a non-volatile storage medium. This addresses the problem in related technologies where mass-produced vehicle controllers suffer from critical data loss during severe faults, leading to difficulties in reproduction and low efficiency in root cause analysis.

The application belongs to the field of organic materials, and particularly relates to a high-stretch, fast self-healing, high-thermal-conductivity and memoryable conductive polyurethane composite material as well as a preparation method and application thereof. The conductive polyurethane composite material is crosslinked by borate ester bonds, B-N coordination bonds and hydrogen bonds, and further introduces hydroxyl boron nitride, carbon nanotubes and graphene nanosheets to obtain the high-stretch, fast self-healing, high-thermal-conductivity and memoryable conductive polyurethane composite material. The raw materials are inexpensive and the operation is simple, and the obtained conductive polyurethane composite material has high-stretch, fast self-healing, high-thermal-conductivity and memoryability, and has potential application prospects in the fields of conductive films, sensors and wearable devices.

The invention belongs to the technical field of communication networks, and provides a communication loop fault detection method in a communication network, which comprises the following steps of: starting a link layer neighbor discovery protocol at each physical port of looped network node equipment, and acquiring an opposite-end neighbor equipment identifier and a port identifier which are actually connected with each port; progressive faults such as laser aging and emission light power degradation can be found in time by monitoring the sending light power value of the optical module and the bias current value of the laser in real time, the blind area that a traditional detection mechanism only depends on receiving light power monitoring is broken through, meanwhile, a secondary verification mechanism is arranged, and after degradation of the optical module is monitored, the detection accuracy is improved. According to the method, protection switching is not executed immediately, and whether the link has an actual bidirectional communication fault is further verified through the bidirectional connectivity detection protocol, so that misjudgment caused by short-time fluctuation of parameters of the optical module is effectively avoided, early warning of potential faults is realized, and the reliability of the optical module is improved. And the stability of the network when the optical module is degraded but the link can still perform normal communication is ensured.

A method for preparing a modified lignin-based conductive gel comprises the following steps: adjusting the pH value of black liquor with a sulfuric acid solution, stirring for 1 hour and then keeping the mixture in a constant temperature water bath for 1 hour, vacuum filtering to separate the filter cake, washing the filter cake with deionized water several times and then drying to obtain black liquor lignin; carbonizing the black liquor lignin under N2 atmosphere, and ball milling the carbonized lignin to obtain a conductive filler; heating and stirring an α-lipoic acid monomer and a cross-linking agent until they are melted, and then continuously stirring for 1 hour to obtain a yellow transparent liquid, adding a conductive filler under stirring and continuing stirring for 10 minutes, and then placing the mixture in an oil bath for ultrasonic treatment to obtain a CLP / ALA suspension; adding a FeCl3 solution to the CLP / ALA suspension to obtain a mixed solution and cooling it at room temperature. The gel prepared by the method has high sensitivity to tensile deformation and excellent skin fit, and can quickly self-repair and restore good tensile properties when damaged by external stimulation.

The embodiment of the present application provides a time delay compensation method and a base station, comprising: an interface module sends a route refreshing message to a baseband unit device (BBU) in the case that the link establishment state of any radio remote unit (RRU) changes, wherein the route refreshing message carries an RRU identity; the BBU determines a target RRU based on the RRU identity; the BBU determines the reverse time delay of the target RRU based on a pre-stored time delay corresponding relationship and sends the reverse time delay to the target RRU; and the RRU performs time delay compensation based on the reverse time delay. The technical scheme of the present application determines the reverse time delay of the other direction through the pre-stored time delay corresponding relationship when a communication fault occurs in one direction, and performs reverse time delay compensation. The RRU link is re-established, the route is re-refreshed, the service parameters are re-allocated and re-sent, the time delay is re-measured and re-reported, and the like in the fault recovery process are avoided, the processing time consumed in the fault recovery is reduced, and the effect of fast self-healing is achieved.

The invention provides a cement paste system capable of self-healing when meeting carbon dioxide for well cementation as well as a preparation method and application of the cement paste system. The cement paste system comprises oil well cement, a carbon dioxide self-healing agent, silicon dioxide, an anticorrosive agent and water, as the carbon dioxide self-healing agent is added into a cement paste system, when a cement sheath has micro-cracks or micro-gaps and carbon dioxide fluid channeling is generated, the carbon dioxide self-healing agent expands in volume under the stimulation action of carbon dioxide, and the micro-cracks or micro-gaps are automatically blocked, so that the purposes of inhibiting carbon dioxide fluid channeling and preventing carbon dioxide fluid channeling are achieved. The effect that the cement sheath continuously has excellent packing performance is ensured; and meanwhile, the carbon dioxide self-healing agent has good compatibility in a cement slurry system, so that the finally obtained cement slurry system has excellent corrosion resistance, self-healing property, toughness and channeling resistance, is suitable for a temperature interval of 30-100 DEG C, and can be used for well cementation of carbon flooding and burying.

The invention discloses a self-repairing coating and application thereof.According to the self-repairing coating, lignosulfonate is added into self-repairing type waterborne polyurethane, so that the strength of a polymer chain is improved, the structure is more stable, and the tensile strength of a material is improved; meanwhile, dynamic hydrogen bonds formed among the materials can support rapid self-healing of the car cover, and the self-repairing performance of the coating is effectively improved; the material can be used for surface protection of various products or articles, such as paint surface protection and glass surface protection, can significantly improve the protection effect, and has wide application prospects.

The invention discloses a bionic dynamic self-healing super-hydrophobic bio-based coated controlled-release fertilizer and a preparation method thereof. The coating material comprises the following raw materials in parts by weight: 0.8-2.5 parts of a bio-based film-forming matrix, 0.5-1.5 parts of a hydrophobic cross-linking agent and 0.013-0.4 parts of a bionic self-healing agent; the bionic self-healing agent is prepared by mixing a phase change agent, a plastic roughening agent, a positive assembly agent and a negative assembly agent in a mass ratio of (10-80): (0.1-1): (10-50): (10-50). The present invention is the first to prepare a new type of super-hydrophobic bio-based coated controlled-release fertilizer that can dynamically self-heal based on a bionic strategy, which solves the defect that traditional super-hydrophobic controlled-release fertilizer membranes are easily swelled and damaged, resulting in the failure of the super-hydrophobic property, and gives the membrane surface the function of being able to regenerate a super-hydrophobic state. When in use, the membrane can sensitively respond to temperature changes to dynamically self-heal its super-hydrophobic properties, thereby accurately controlling the release rate of the coated fertilizer, and perfectly combining the nutrient release law of the coated fertilizer with the fertilizer requirement law of crop growth, thereby achieving the purpose of significantly improving the fertilizer utilization rate.