147results about How to "Fast self-healing" patented technology

Collectors within a wireless metering network that control a wireless Local Area Network (LAN) of nodes. The collectors typically interact over a WAN with a head-end system, which has network management and control of all collector LANs. Control is distributed from the head-end system down to the data collectors by using TCP/IP data networks to interconnect the data collectors. The data collectors are interconnected on high bandwidth TCP/IP networks and can establish peer-to-peer communications and participate in the overall network control. The data collectors coordinate information about the mesh LAN-connected nodes with one another in a peer-to-peer manner to distribute overall network control to establish peer-to-peer registration of data collectors during self installations, and optimize overall self-healing and adaptive reconfiguration capabilities of the network when nodes migrate such that data collection processes can proceed without interruption.

The invention discloses an empty micropin array chip which comprises a substrate and an empty micropin, wherein the empty micropin comprises a pin head and a pin rod, the empty micropin is fixed on the substrate through the pin rod and is inclined to the substrate at a certain angle, the pin head is provided with an oval-shaped annular plane, one end of the pin head is a pinpoint, one part of the oval-shaped annular plane is embedded into the substrate, the pin rod is an empty circular pipe which is embedded into the substrate or is penetrated through the substrate, the bottom of the pin rod is parallel with the lower surface of the substrate or is convex or concave, and the empty micropin penetrates through the two sides of the substrate to be formed into the hole-shaped micropin or the bottom of the pin rod is sealed to be formed into a blind hole type micropin. The empty micropin array chip is firm in structure, sharp in pinpoint, convenient in puncture, low in cost, high in yield, and suitable for manufacture in bulk. The micropin in the array has good consistency, is free of pain feel and blooding when in use, and is safe and reliable since the minimally-invasive skin can fast heal after in use.

The invention discloses an antibacterial adhesion injectable hydrogel dressing, a preparation method and applications thereof, and belongs to the technical field of biodegradable biomedical materials.According to the method, 2,3-epoxypropyltrimethylammonium chloride (GTMAC) is grafted onto chitosan to obtain a quaternized chitosan polymer (QCS) as the main raw material of a hydrogel, p-carboxybenzaldehyde is grafted onto a triblock copolymer Pluronic< >F127 to obtain an aldehyde group-terminated Pluronic< >F127 polymer (PF127-CHO) as the cross-linking agent of the gel, and the aldehyde group-terminated Pluronic< >F127 polymer (PF127-CHO) and the quaternized chitosan polymer (QCS) are subjected to a cross-linking reaction under a physiological environment to obtain the antibacterial adhesion injectable hydrogel dressing (QCS/PF) with advantages of rapid self-healing, easy extending and easy compression. According to the present invention, the method has advantages of simple process, wide raw material source and low preparation cost; and the hydrogel dressing prepared by using the method has advantages of good adhesion, good pH responsiveness, good mechanical property, good self-healing property, good bleeding stopping property and good antibacterial property so as to be used in the field of skin injury treatment drugs.

The invention discloses a method for rapid self-healing of a power grid. The method comprises the following steps of: obtaining operation data of all machine units in the power grid, and establishing mathematic models of all the machine units; determining a starting sequence of non-started machine units and searching for power supply routes from started machine units to the non-started machine units according to the mathematic models; calculating capacities and schedulable loads of the started machine units by using an optimal trend algorithm; and starting the non-started machine units in sequence according to the starting sequence, the power supply routes, and the capacities and the schedulable loads of a generator unit. Correspondingly, the invention further provides a system for the rapid self-healing of the power grid. According to the method and the system, the rapid self-healing of the power grid is realized by considering a plurality of machine units with black-start functions, and the steady trend constraint and the machine unit operation constraint are met.

The invention provides an efficient mimicry defense system and method, and the system comprises an input agent, a heterogeneous execution body pool, a decision device, a fault detector, a fault collector, and a fault recovery module. The method comprises the following steps that 1, a fault detector detects the software and hardware running state of a heterogeneous execution body in real time and sends detected fault information to a fault collector, and then the fault collector transmits the fault information to a judgment device, an input agent device and a fault recovery module; step 2, theadjustor removes adjustments to the fault heterogeneous executor message; 3, the input agent removes the distribution of the input messages of the fault heterogeneous executor; and 4, the fault recovery module sends a setting command to the faulted heterogeneous execution body or resets the heterogeneous execution body in a hardware mode.

The invention discloses a metal micro-needle array flexible patch, a transdermal applicator and a transdermal application patch. The metal micro-needle array flexible patch comprises a flexible substrate and at least two metal micro-needle modules which are arranged at certain intervals and fixed on the bottom surface of the flexible substrate or partially inset in the flexible substrate. Each metal micro-needle module is a metal sheet with projecting micro-needles on the edge, or a metal sheet fixed on a needle holder and provided with projecting micro-needles on the edge, or composed of metal micro-needles separately erected and fixed on a needle holder. The micro-needles are perpendicular to the surface of the flexible substrate and are hollow or solid metal micro-needles with a tip pointing out. The micro-needle array is organically combined with the flexible substrate, so that medicine is allowed to directly pass corneum to quickly enter the human body. The metal micro-needle array flexible patch is comfortable to use and evident in efficacy.

The invention discloses a fault-tolerant design method of a self-reconfigurable D/TMR (Dual/Triple Modular Redundancy) system based on an FPGA (Field Programmable Gate Array), comprising the following work steps: (a) utilizing a DMR bit stream to configure a dynamic reconfigurable area; (b) detecting the state of a DMR system through a detection circuit and judging whether faults exit; if not, keeping a DMR state of the dynamic reconfigurable area; otherwise, reading a configuration TMR bit stream on a CF (Collaborative Filtering) card; and configuring the dynamic reconfigurable area into a TMR state. The fault-tolerant design method provided by the invention can overcome the disadvantages of a fault-tolerant mechanism, has the advantages of higher resource utilization rate, high fault-tolerant capability and high reliability, and can realize rapid self-repairing of faults. The invention further discloses the self-reconfigurable D/TMR system based on the FPGA.

The invention discloses a preparation method of a water-based polyurethane self-repairing coating material based on double-selenium dynamic covalent bond and hydrogen bond. The material is prepared bythe following steps: firstly, performing reaction on diisocyanate, macromolecular diol, dihydromethyl propionic acid, a UPy-based chain extender and double-selenium diol to obtain a polyurethane prepolymer; then adding triethylamine and performing neutralization; finally adding deionized water and diamine, and performing emulsification and chain extending. The self-repairing property of the material is based on the visible light dynamic reversible characteristic of the double-selenium bond and the rapid breakage-recombination characteristic of the hydrogen bond, damage can be self-repaired rapidly and repeatedly under mild and visible illumination, damage to the material by the conditions such as high temperature and ultraviolet irradiation needed by the traditional self repairing is avoided, the hydrogen bond with rapid recombination and weak bond energy is combined with the double-selenium bond with slow recombination and strong bond energy, rapid and slow combination of the self repairing is realized, and better self-repairing effect is achieved. The material can be applied to coating in many fields and has wide application prospect.

The invention belongs to the technical field of preparation of a self-repairing coating, and particularly relates to a method for preparing a conductive coating with a self-repairing ability on a glass, quartz or plastic base in an arbitrary shape. The method comprises the steps of processing the base, preparing a coating solution, preparing a polymer coating, preparing a conductive layer and the like. The method disclosed by the invention is not limited by size and shape of the base, and is suitable for the base with a plane, a curve surface or an irregular surface. The prepared conductive coating has good flexibility and electrical conductivity and can repair scratches on the surface and damaged electrical conductivity under excitation of a solvent. The repairing process is fast; over 95% of the scratches can be repaired with excellent restoring effect, and the repairing process can be repeated for a plurality of times. The prepared conductive self-repairing coating has a plurality of potential applications, for example, the self-repairing coating is applied to a lead, a circuit and the like to increase the use stability of an electronic apparatus.

The invention relates to a self-repairing water-based epoxy compound elastic coating material and a preparation method of the material and belongs to the technical field of paint. The method comprisesthe steps of dispersing macroporous adsorbent resin adsorbing a saturated HMDI (hexamethylene diisocyanate) prepolymer, a latent curing agent and a catalyst mixture and a high water absorber in a paraffin molten mass to prepare macroporous adsorbent resin-water absorber microcapsules, dispersing the microcapsules in water to form microcapsule dispersing liquid, and mixing and curing the microcapsule dispersing liquid, water-based epoxy resin, a water-based epoxy curing agent and the like for film formation to form the water-based epoxy compound elastic coating material with a self-repairing function. When a coating layer is scratched, or a base material deforms and generates a crack, the high water absorber in the microcapsules can adsorb moisture in the air to expand; and the HMDI prepolymer and the latent curing agent can quickly react with groups, such as alkylol amine, generated by the moisture or the water to generate a polyurethane-urea cured substance for synergic repair of thecrack. The material can be used for the highway fields of tunnels, bridges, concrete fender walls, metal guardrails and the like and has effects of corrosion resistance, water resistance, attractiveness, visual fatigue reduction and the like.

The invention discloses a preparation method of a self-repairing hydrogel based on double-selenium dynamic covalent bond and quadruple hydrogen bond. The hydrogel is prepared from the following steps:enabling the diisocyanate, polyethylene glycol, di-selenium diol, UPy-based chain extender and crosslinking agent trimethylolpropane to react in tetrahydrofuran to obtain organic gel, and soaking theorganic gel in deionized water to remove the solvent and unreacted micromolecule. The hydrogel can realize the repeatable fast self-repairing on the injury under the mild visible irradiation based onthe dynamic feature of the di-selenium dynamic covalent bond under the visible irradiation and the UPy quadruple hydrogen bond fast fracturing-recombining feature, the damage on the material structure by the high-temperature, ultraviolet irradiation and other stronger external stimulus required by the traditional self-repairing is avoided. The hydrogel is a polyurethane structure taking the polyethylene glycol as the hydrophilia soft segment, and has excellent biocompatibility and molecular structure designability; the actual application requirement can be well satisfied, and the hydrogel hasa extensive application prospect in the field of the biological tissue engineering.

The invention discloses a metal micro-needle array with medicine grooves and a micro-needle percutaneous dosing patch and device. The metal micro-needle array comprises a substrate and a plurality of metal micro-needles. The metal micro-needles are arranged on the substrate at intervals and are made from metal tubes, the medicine grooves are formed by inner cavities of the metal tubes, and part of the metal tubes are removed in the axial direction of the metal tubes, so that the medicine grooves are provided with radial openings facing the metal tubes. According to the metal micro-needle array with the medicine grooves, part of the metal tubes are removed in the axial direction of the metal tubes, so that the metal micro-needles are formed, the sizes of the metal micro-needles are reduced, pain of a user is low in the using process, no blood flows out, and minimally-invasive skin can be quickly self-healed after the metal micro-needle array is used; meanwhile, the medicine grooves with the radial openings serve as medicine storehouses, detection of the filling effect and filling operation of medicine are facilitated, and the probability that medicine is left out of the body in the needle applying process can be greatly decreased.

The invention discloses a hybrid dynamic polymer. The hybrid dynamic polymer comprises a cyclic organoborate bond produced by a reaction of an organoboric acid element with a diol element, and a supramolecular hydrogen bond formed under the condition of participation of a side hydrogen bond group, wherein the cyclic organoborate bond and the supramolecular hydrogen bond exist as polymeric chain joints and/or cross-linked chain joints for the dynamic polymer and are necessary conditions for the formation or maintenance of the structure of the dynamic polymer. Due to the dynamic reversibility ofthe cyclic organoborate bond and the supramolecular hydrogen bond, the dynamic polymer has self-repairing performance, reusability and recyclability; in addition, when the dynamic polymer of a specific formula receives an external force, the cyclic organoborate bond and the supramolecular hydrogen bond can be preferentially broken as sacrificial bonds, so the dynamic polymer presents good toughness. The dynamic polymer can be extensively used as a self-repairing material, a tough material, a sealing material, a sandwich adhesive, a force sensor, and the like.

The invention relates to the field of responding type injectable hydrogels, in particular to a dipeptide hydrogel, a preparation method and application thereof. A dipeptide molecule is of an XY structure, wherein X is selected from tyrosine, phenylalanine, tryptophan or histidine; Y is selected from aspartic acid, asparagine, glutamic acid or glutamine. The hydrogel has a quick ultrasonic response characteristic, can be quickly recovered to a gel state after stimulating response, is stable and uniform in properties, and can be applied to the fields of biological nano-materials, medicament controlled-release, medicament delivery, cell encapsulation and tissue repair.

The invention discloses a high-transparency self-repairing self-adhesion conductive elastic material and a preparation method thereof, and belongs to the technical field of high polymer materials. The preparation method comprises the following steps: firstly, mixing a hydrogen bond acceptor and a hydrogen bond donor to prepare a polymerizable eutectic solvent, then adding a photoinitiator, uniformly stirring to obtain a prepolymer solution of a mixed liquid, and finally, polymerizing the prepared prepolymer solution through ultraviolet irradiation to obtain the high-transparency self-repairing self-adhesion conductive elastomer. Wherein the hydrogen bond donor comprises an acrylic acid monomer and an imidazole monomer. According to the preparation method, cross-linking agents of other components do not need to be additionally added, and the conductive elastomer which has the light transmittance of 90% or above, can be rapidly self-repaired and is easily adhered to ceramics, metal and skin can be prepared only by adding the photoinitiator and performing ultraviolet irradiation. The high-transparency self-repairing self-adhesion conductive elastomer prepared by the invention is non-toxic, has high mechanical strength and adhesion performance, and can be applied to the fields of flexible electronic devices, adhesive materials and the like.

The invention relates to a digestive tract submucosal injection short peptide hydrogel as well as a preparation method and application thereof. The hydrogel is formed by co-assembling amphiphilic dipeptide and RGD or Fmoc-RGD, the hydrogel has stimulation responsiveness, shear thinning and rapid self-repairing performance, is good in biocompatibility, safe, environmentally friendly, easy and convenient to operate, suitable for large-scale production, and good in upheaval effect and long in duration when applied to the aspect of ESD operation filler, so that the operation safety is improved, and the operation difficulty and time are reduced. In addition, the hydrogel can also be applied to the fields of biological nano materials, drug loading and controllable release, tissue repair and regeneration, cytoskeleton or tumor treatment and the like.

A three-layer self-healing flexible strain sensor includes: a self-healing sensitive layer, wherein a self-healing encapsulating layer is respectively placed on an upper surface and a lower surface of the self-healing sensitive layer. The self-healing sensitive layer comprises a doped carbon material or a conductive composite. The three self-healing layers of the self-healing strain sensor can quickly repair the internal and external damage caused by the layered structure in a short period of time after the external damage, and does not require external stimulation. The three-layer self-healing structure strain sensor is simple in preparation without using a repair agent, which can achieve rapid self-repair at the room temperature, and can be repeatedly repair. The three-layer self-healing structure increases the strength and modulus of the strain sensor as well as increases the ability of the strain sensor to resist external damage.

The invention discloses a radiation refrigeration paint and applications thereof. The radiation refrigeration paint comprises polymer emulsion, a self-repairing agent, and radiation refrigeration particles, wherein the self-repairing agent and radiation refrigeration particles are dispersed in the polymer emulsion. The self-repairing agent comprises a wall layer and a self-repairing core material, which is wrapped by the wall layer. When the wall layer is broken down, the self-repairing core material is released. The self-repairing core material is used to realize self-repairing of a coating. For the first time, a self-repairing material is introduced into a radiation refrigeration paint so as to obtain a coating with a self-repairing function, when a coating is scratched or damaged, self-repairing can be performed quickly, the service life of the coating is prolonged, and thus the stability of the radiation refrigeration effect of the coating is guaranteed.

The invention discloses a preparation method of high-strength self-healing hydrogel and belongs to the technical field of preparation of medical materials. The preparation method comprises the following steps: dissolving polyvinyl alcohol, adding an acrylamide solution, by taking N,N'-methylene bisacrylamide as a crosslinking agent and nano titanium dioxide as a free radical initiator, firstly polymerizing acrylamide under ultraviolet light condition to form polyacrylamide network gel, then carrying out freeze-thraw cycle to form polyvinyl alcohol network gel, then carrying out oxidation crosslinking on the surface of a prefabricated hydrogel network by utilizing self-polymerization effect of dopamine, so that a polydopamine composite layer strongly adhered on the surface of a gel network is formed, and self-made nano hydroxy calcium phosphate is adsorbed, and the aim of further strengthening the hydrogel network is achieved. Meanwhile, the formed polydopamine surface layer and the adsorbed nano hydroxy calcium phosphate have good biocompatibility, and the problem that the traditional self-healing hydrogel is poor in mechanical strength and biocompatibility is effectively solved, so that the high-strength self-healing hydrogel has better application prospect.

The invention discloses a dynamic polymer. The dynamic polymer comprises a cyclic organoborate bond produced by a reaction of an organoboric acid element with a monohydroxy element, and an optional supramolecular hydrogen bond, wherein the cyclic organoborate bond exists as a polymeric chain joint and/or cross-linked chain joint for the dynamic polymer and is a necessary condition for the formation or maintenance of the structure of the dynamic polymer. Due to the dynamic reversibility of the cyclic organoborate bond and the optional supramolecular hydrogen bond, the dynamic polymer has self-repairing performance, reusability and recyclability; moreover, the dynamic polymer prepared according to a specific formula has the characteristics of energy dissipation and energy absorption and thefunctions of damping, shock absorption, sound insulation, impact resistance, high toughness and the like based on the dynamic nature of the organoborate bond when the dynamic polymer receives an external force. The dynamic polymer or a composition thereof can be extensively used as an anti-impact damping material, a self-repairing material, a tough material, a force sensor, a sealing material, a sandwich adhesive and the like.

The invention relates to a waterproof, breathable, high-elastic and self-repairing double-layer nanofiber membrane for skin dressing and a preparation method of the nanofiber membrane. The preparationmethod comprises the following steps: firstly, carrying out electrostatic spinning on a precursor spinning solution I consisting of a synthetic polymer solution, an alcohol-soluble hydrophobic agent,an environment-friendly cross-linking agent and a functional drug to prepare a hydrophobic fiber membrane; then carrying out electrostatic spinning on a precursor spinning solution II consisting of anatural polymer solution, a catechol-based molecular solution and anhydrous ferric trichloride powder, and receiving the obtained material on the hydrophobic fiber membrane to prepare a composite fiber membrane; and finally carrying out aftertreatment on the composite fiber membrane to obtain the nanofiber membrane. The water pressure resistance of the prepared double-layer nanofiber membrane is5-50kPa, the air permeability is 5-15kg/m<2>/d, the elastic modulus is 5-15MPa, the tensile strength and elongation at break of a self-repaired fiber membrane are 50-90% of an initial fiber membrane,and the adhesion and comfort of a wound surface can be guaranteed while the healing promoting capability of the dressing is improved.

The invention provides a wireless chain network based routing implementation method, which is characterized in that when a node receives a route update message, a routing module combines a self node routing information table, a per-to-peer node routing information table, a self link information table and a peer-to-peer link information table into network bitmap information and sends the route update message to an air interface adjacent node; when the node has peer-to-peer nodes, the routing update message acts as a route sharing message and is sent to all peer-to-peer nodes in the same group; when the node has no peer-to-peer node, the route update message is only sent to the air interface adjacent node; and the node updates the self node routing information table according to a received route update message of the air interface adjacent node, updates the peer-to-peer node routing information table according to a received route update message of the peer-to-peer nodes and updates the self link information table according to a received adjacent node air interface measurement result. According to the invention, the occupation overhead of routing for the air interface can be reduced.

The invention discloses polyethylene glycol/gelatin particle dual-network hydrogel based on dual-network design and a preparation method thereof. Gelatin particles capable of dissipating energy of a network and polyethylene glycol macromolecules capable of keeping the structural integrity of the hydrogel are used, and the hydrogel material with high mechanical properties is formed on the basis ofa double-network design, when the polymer network is not formed, the reversible physical interaction between the colloidal gel materials endows the hydrogel with excellent shear thinning and self-repairing properties, and after the polymer network is formed, the mechanical properties of the hydrogel are obviously enhanced, and the hydrogel has printability and biocompatibility and has huge application potential in tissue engineering and regenerative medicine.

The invention relates to a self-repairing waterborne epoxy/asphalt compound waterproof coating and a preparation method thereof, belonging to the technical field of a coating. According to the technical scheme, the method comprises the following steps: utilizing polyether polyol and MDI-50 to compound a polyurethane prepolymer with -NCO content of 20%; dipping 30-50 micron of water absorbent in the polyurethane prepolymer till being saturated; dispersing in paraffin molten mass; atomizing, quickly freezing and generating paraffin for wrapping a high water absorbent microcapsule containing the polyurethane prepolymer; dispersing the microcapsule in water, thereby forming a microcapsule dispersing solution containing the high water absorbent microcapsule; mixing the water-borne epoxy resin emulsion, waterborne epoxy curing agent, emulsified asphalt, butadiene-acrylonitrile latex, microcapsule dispersing solution, padding and additives and curing into a film, thereby forming the waterborne epoxy/asphalt compound waterproof coating with a self-repairing function. When the waterproof material is scratched and cracked, the high water absorbent in the microcapsule can quickly absorb water for swelling and the polyurethane prepolymer can participate into chain extension reaction for generating solid while meeting water, so that the purposes of quickly repairing the cracks and preventing water leakage can be achieved.