94results about How to "Strong self-healing" patented technology

The invention provides a petal type power distribution network protection control system which comprises a master station layer, an area layer and a spacing layer. The master station layer comprises an automatic master station. The area layer comprises an area control master station and a centralized protection terminal. The area control master station is arranged in a transformer substation. The centralized protection terminal is arranged in a power distribution room. The spacing layer comprises a centralized protection terminal and a pilot protection device, the centralized protection terminal is used for protecting gaps in the power distribution room except inlet and outlet wires, and the pilot protection device is used for protecting the inlet and outlet wires and call wires of the power distribution room. The area control master station is connected with the centralized protection terminal and the pilot protection device. The area control master station is used for receiving real-time information and carrying out load lightening according to the preset strategy when detecting overload after a petal type power distribution network breaks down and power supply is restored. The protection control system can fast locate and isolate faults for the petal type power distribution network and restore power supply fast.

The invention discloses a geological disaster monitoring and early warning system and method using a wireless sensor network, wherein the system comprises a sensor data acquisition node, a sensor data aggregation gateway and a data processing server; the sensor data acquisition node comprises a sensor module, a data monitoring module, a node wireless transceiver module and a power management module; the sensor data aggregation gateway comprises a gateway wireless transceiver module, a data processing module, a command analysis module, a system monitoring module, a gateway mobile communication module and a power management module; the data processing server comprises a server mobile communication module, a database, a data processing background, a webpage visualization platform, an SMS push platform and a mobile phone app platform. The invention further provides a geological disaster monitoring and early warning method using a wireless sensor network. The invention uses the multi-source data fusion technology, so that the convergence of monitoring and early warning is more reasonable and scientific, and the early warning and forecast capability, reliability and accuracy of the monitoring task are improved.

The invention relates to a self-compacting bituminous concrete waterproof seal and a construction method thereof. The self-compacting bituminous concrete waterproof seal is especially applicable to local waterproof sealing of high-speed railway or dedicated passenger line road beds in high and cold areas. Compared with the prior art, the self-compacting bituminous concrete waterproof seal and the construction method thereof have the advantages that the advantages such as good impermeability, freeze-thawing resistance, ageing resistance, deformation adaptability and high seal-healing capacity in the self-compacting bituminous concrete are given to full play, the road bed water controlling and drainage problems are solved by the use of the super-compact material structure, and water is prevented from permeating to damage the road beds; the waterproof seal is manually paved, thickness of the waterproof seal is determined through the use of wooden or steel forms, compacting by self-mobility is allowed, no compressing is required, constructing is simple and convenient, the requirement on environment is low, and the waterproof seal is suitable for structures, having small but abundant working faces, such as supports of overhead contact systems for high-speed railway road beds; the waterproof seal has ultra-long service life, less maintenance is required during using of the waterproof seal, the waterproof is easy to maintain, and a scheme about the ideal long-acting railway road bed waterproof seal is provided.

The invention discloses rapid ground leveling mortar. The rapid ground leveling mortar is prepared from the following raw materials in parts by weight: 200 to 350 parts of cementing material, 500 to 600 parts of aggregate, 100 to 200 parts of filler, 0.5 to 1.0 part of water reducing agent, 0.3 to 1.0 part of water retaining agent, 0 to 20 parts of latex powder, 0 to 1 part of retarder, 0 to 1 part of early strength agent and 0 to 1 part of anti-foaming agent. The rapid ground leveling mortar has a high levelling property and a high self-healing property, is free from sedimentation and bleeding, has high bonding strength with a base layer, is easy and convenient for ground construction, and can be used for realizing mechanical large-scale rapid construction; meanwhile, accurate ground leveling of 10 to 60mm in thickness can be realized, the single construction thickness is larger than 10mm, and fracturing and hollowing are avoided while the maximum single construction thickness is up to 60mm; people can tread on the ground 2 to 4 hours after construction, the strength can be up to the final strength of ordinary M15 ground mortar after 24 hours, a construction flow is realized, high construction efficiency and low labor strength are achieved, and the ground leveling construction period can be greatly shortened.

The invention discloses cement for preparing colored asphalt, prepared from 30-40 parts of rubber oil, 40-50 parts of C9 petroleum resin, 4-12 parts of SBS (styrene butadiene styrene) modifier, 0.5-3 parts of an antiaging agent, 8-15% of terpene resin, and 1-5 parts of diatomite. The cement of the invention has high softening point and high-low temperature ductility, which indicates that the cement has good high-low temperature stability; results of a tensile test on the cement show that the cement has high-low temperature toughness, which means that the cement has good low-temperature flexibility and good impact resistance, and the cement is up to 60-80% in elastic recovery which means that the cement has good elastic recovering performance and can well self-heal from deformation caused by loading effect; the light color cement includes higher polar aromatic components, the adhesion of the cement measured by boiling method may reach level 5-6 without adding any anti-stripping agent, which indicates that the cement has good adhesion.

The invention discloses a preparation method of a bionic super-lubricating composite anti-corrosion coating with a self-restoration function. A micro-arc oxidation (MAO) film and a corrosion inhibition particle intercalated lamellar hydroxide (LDH) film are prepared on the surface of a magnesium-aluminum alloy, fluorine-containing silicone oil is injected, and therefore the functions such as surface super-lubricating and coating restoration are achieved. In the disclosed composite coating, WO4<2->, MoO4<2-> and other corrosion inhibition particles are intercalated into an MAO generated magnesium-aluminum lamellar hydroxide (MgAl-LDH) film, the corrosion inhibition particles mixed in intercalation can be released in a corrosive medium containing Cl<-> in a response manner, inspersed Cl<-> is captured through anion exchange, corrosive anions are released, and self-restoration of the corrosion resistance of the coating is achieved. Meanwhile, the fluorine-containing silicone oil on the surface can heal surface scratches through self-leveling under the condition without the help of external force, and therefore the capacity of self-restoration, super-superhydrophobicity and long-time corrosion resistance of the composite coating is achieved.

The invention provides a method for preparing an electroconductive polymer compound. The method comprises the steps that aniline, an optional phytic acid, a water-soluble polymer of which the side chain comprises one or more of hydroxyl, carboxyl and sulfo group, a free radical polymerization initiator and a solvent are mixed, and a polymerization reaction is performed. The invention also provides a method for preparing the electroconductive polymer compound for strain and/or pressure sensing. The electroconductive polymer compound prepared by the method has favorable self-healing nature, mechanical property and electrical property. Besides, when used for a strain sensor or a pressure sensor, an electroconductive polymer compound membrane prepared by the method has excellent sensing sensitivity and actual monitoring and sensing capabilities before and after self-healing.

The invention relates to a self-repairing antibacterial chitosan hydrogel and a preparation method thereof, the self-repairing antibacterial chitosan hydrogel is characterized in that the hydrogel is a self-repairing antibacterial hydrogel, the preparation method of the self-repairing antibacterial hydrogel comprises the following steps of: (1) reacting carboxymethyl chitosan with gallic acid to obtain a soluble carboxymethyl chitosan gallic acid derivative, wherein the molar ratio of gallic acid to carboxyl on carboxymethyl chitosan is 1:1-10:1; and (2) mixing an aqueous solution of the carboxymethyl chitosan gallic acid derivative with a FeCl3 solution according to a concentration ratio of 5:1-20:1 to obtain the self-repairing chitosan hydrogel, wherein the pH value of the mixed solution is 5-10. According to the invention, the intelligent hydrogel with self-repairing performance is synthesized in a short time through the interaction of dynamic metal ligands. In addition, the hydrogel also shows excellent antibacterial performance, and the antibacterial rate is increased along with the increase of the content of the carboxymethyl chitosan gallic acid derivative.

The invention provides a biological admixture for self-healing of concrete microcracks and a preparation method of the biological admixture. The biological admixture is prepared from components and raw materials in parts by mass as follows: 0.5-3 parts of phosphate, 0.1-1.0 part of sulfate, 0.01-1.5 parts of chlorine salt, 0.25-1.2 parts of citrate, 0.5-3.2 parts of peptone, 0.2-2 parts of a yeast extract, 1,000-1,050 parts of distilled water, 0.1-10 parts of urea, 0.5-2 parts of a beef extract, 10-20 parts of agar, 10-15 parts of white carbon black, 0.1-8 parts of calcium lactate, a proper amount of sodium hydroxide solution with the mass percent concentration being 30% and a Pasteur sporosarcina strain. The invention further provides the preparation method of the biological admixture. The biological admixture has good healing performance for concrete microcracks, accordingly, the durability of concrete engineering is improved, and construction costs are saved. The biological admixture is especially applicable to concrete structures with high requirements for mechanical strength, such as roads, bridges and other major engineering.

The invention provides a low-temperature rapid preparation method of a self-healing ceramic matrix composite. The composite is prepared by adopting a high temperature resistance inorganic fiber clothor a thin fabric as a reinforcing phase, adopting silicon resin and MoSi2 micro powder and the like as a matrix, performing repeated densification through a slurry auxiliary vacuum impregnation-high-temperature cracking technology. Due to the acupuncture or puncture sewing technology in the preparation method, the material flexibility is ensured, and the composite is better applicable to molding of large-size and complex components; meanwhile, the method is short in preparation period, and the composite is low in cost; the preparation technology is mature, and the production efficiency is high; the composite obtained through the method has the proper viscous flowing capability, and the packing effect is improved while the packing temperature is increased; the high dielectric dispersing resistance is achieved, and corrosion of environment media to fiber is reduced; raw materials are wide in source, preparation is easy, operation is easy, the method is expected to be an effective methodin the industrial field for producing and preparing the ceramic matrix composite in a large scale, and the application prospect is wide.

The invention provides a two-way energy balance wireless sensing network route method based on LEPS (Link Estimation and Parent Selection), which adds a downlink route based on an LEPS route protocol, supports query and control of aggregation nodes to other nodes, improves a routing basis of the LEPS route protocol, introduces residual energy based on hop count and data link quality, and improves load balance of a network. The method adds the downlink route, so that the control of the aggregation nodes to the common nodes is achieved, and an application scope of the route protocol is expanded; the downlink route is achieved based on an uplink route, and is simple to achieve; extra control information is less; resources can be saved effectively; and the hop count, the link quality and the residual energy of the nodes are combined together, and considered as the basis of selection of father nodes, so that the load balance of the nodes in the same gradient is achieved, premature failure of the individual node due to an overweight load is avoided, and the life cycle of the whole network is prolonged.

The invention discloses a fast response adhesion strong crossed membrane self-adhesion waterproof roll, comprising an upper cover layer, a reaction type mixed paving self-adhering gelatinous layer and a lower covering layer, wherein an overlap edge, namely an edge membrane, is arranged at the circumferential edge of the upper covering layer; the upper covering layer is strong crossed overlying polyethylene membrane, and the strong crossed overlying polyethylene membrane is formed by 45-degree crossed compound hot pressing of two layers of high-density polyethylene membranes; and the overlap edge is a silicon-coating isolating membrane, the lower covering layer is also a silicon-coating isolating membrane, and the silicon-coating isolating membrane is polyethylene glycol terephthalate silicon-coating isolating membrane. The preparation process has the advantages that the life of the waterproof roll is prolonged, the construction is more convenient, and the waterproof roll has excellent size stability and weather resistance, has performances of ultraviolet resistance and bidirectional tearing resistance, is firm in adhesion, can avoid water flow, and has good self-healing capability; and local punctured points can be automatically healed.

Disclosed is dual-ion collaboration crosslinking rapid self-healing type bacteriostasis hydrogel. The hydrogel is generated by chemical and physical crosslinking of polyvinyl alcohol and agar, the internal structure is a three-dimensional network structure, and metal ion of the network structure are combinations of two of Fe3+, Al3+, Zn2+, Ca2+ and Cu2+; a preparation method of the bacteriostasishydrogel comprises the steps that agar and polyvinyl alcohol are dissolved into deionized water under the temperature of 95 DEG C, and then, acrylic acid is added into the mixture; nitrogen is introduced into the mixture for deoxygenation for 10 min, persulfate, N,N-methylene bisacrylamide and inorganic metal salt are added, the obtained solution is injected into a cylindrical model and kept at the temperature of 60-90 DEG C, the temperature is kept constant for 6-10 h, cooling is performed to reach the temperature of 2-5 DEG C, the temperature is kept constant for 1-5 h, the mixture is frozenat the temperature of subzero 20-subzero 15 DEG C, the temperature is kept constant for 2-5 h, the mixture is taken out to be unfrozen under the room temperature for 5-10 h, the freezing/defreezing processes are repeatedly executed 2-4 times, then, the mixture is taken out from the mold, and the hydrogel is obtained. The hydrogel has the high mechanical performance, rapid self-healing performanceand antibacterial performance.

The invention relates to a preparation method of a high-capacity high-safety solid-state lithium battery. The high-capacity high-safety solid-state lithium battery is prepared by taking a liquid metalcomplex prepared from liquid metal nanoparticles, carbon nanotubes and graphene as a negative active substance and taking solid electrolyte as an electrolyte. The negative active substance of the solid-state lithium battery adopts liquid metals, the carbon nanotubes and the graphene, wherein liquid metals tin and gallium have high energy density, can provide high capacity for the solid-state lithium battery, and thereby are ideal materials for a lithium battery with high energy density; the carbon nanotubes and the graphene are added to construct a three-dimensional frame which enables the lithium battery to have higher ionic conductivity; in addition, the three-dimensional frame has a complex structure and good mechanical properties, so that lithium dendrites formed on the surface of anode metal lithium can be inhibited, and the safety performance of the battery is improved; the cycle life of the battery is prolonged and the and the stability of the battery is improved; by adopting the solid electrolyte, the interface resistance can be greatly reduced to a great extent.

The invention provides a preparation method of an environment-friendly self-healing type titanium/zirconium/molybdenum conversion film on the surface of aluminum alloy. The preparation method comprises the following steps that surface pretreatment is conducted on each aluminum alloy sample; a conversion solution is compounded, wherein the conversion solution comprises 0.5-5 g/L of fluotitanate, 0.5-3 g/L of fluozirconate, 1-6 g/L of molybdate, 0.2-3 g/L of a chelating agent, 0.3-3 g/L of a film formation additive and 0.2-0.5 g/L of a pH value adjustment agent, water is added after all components are mixed, stirring is conducted for 30-50 minutes, then, sealing is conducted, and aging is conducted for one day; the conversion film is prepared, wherein each aluminum alloy sample is soaked inthe conversion solution, the continuous and uniform faint-yellow titanium/zirconium/molybdenum conversion film can be formed on the surface of the aluminum alloy, the aluminum alloy samples are takenout and thoroughly cleaned through distilled water, and drying is conducted, so that preparation of the conversion film is completed. By means of the preparation method, the film formation temperatureis low, the film formation time is short, the conversion solution is stable, no chromium is adopted, and environmental friendliness is achieved; the surface of the aluminum alloy is good in corrosionresistance and capable of achieving self-healing; and the preparation method is applicable to various types of aluminum alloy.

A polymer thin film dielectric medium consists of dianhydride structural units containing alicyclic structures and diamine structural units, wherein the molar composition ratio of the dianhydride structural units to the diamine structural units is [0.95-1.05]:1. The polymer thin film dielectric medium is obtained through condensation polymerization of a dianhydride containing an alicyclic structure with a diamine, and subsequent thermal imidization treatment. The preparation method is as follows: under the protection of an inert gas, dissolving the diamine into an organic solvent, adding the dianhydride containing the alicyclic structure into the mixture, performing stirring to obtain a homogenous solution, and allowing the homogenous solution to react continuously for 6-10 hours at a certain temperature, so as to obtain a polyamide acid (PAA) solution; and coating the polyamide acid solution containing the alicyclic structural dianhydride onto a substrate, subjecting the coated substrate to a heating and drying treatment of 2 hours at 50 DEG C, 1 hour at 100 DEG C, 1 hour at 150 DEG C, and 0.5 hour at 180 DEG C, then immersing the obtained substrate into deionized water for peeling, and then performing drying treatment again, so as to obtain the polyimide film dielectric medium. The polymer film dielectric medium provided by the invention is used for metallized film capacitorsof electric vehicles or hybrid electric vehicles.

The invention discloses a split-phase compensation self-healing type reactive compensation capacitor comprising a capacitor shell, four connecting terminals, a connecting wire and a metallized thin film, wherein the connecting terminals and the metallized thin film are connected by the connecting wire, potting materials are filled in the capacitor shells, the connecting terminals comprise three three-phase connecting terminals and one neutral-point connecting terminal, and the connecting mode of the capacitor is in a three-phase and four-wire Y connecting mode; a plastic base is arranged in the capacitor shell, the terminals are provided with four copper cylinders, cooper sheets are arranged under the copper cylinders; the bottom of the capacitor shell is provided with a film rolling axis, and the metalized thin film is a polypropylene metalized thin film which is winded on the axis. The invention has functions of compensation and distribution. The required capacitance for each phase can be input respectively, so that the reactive compensation of each phase achieves the optimum state, which has an obvious effect on improving the power factor of a power grid, improving the efficiency of the power grid, reducing line loss, improving voltage quality, reducing electricity consumption, increasing the active capacity of a transformer, reducing distribution cost, and saving space.

The invention provides a non-cured rubber asphalt waterproof coating and a preparation method thereof, and belongs to the technical field of waterproof materials. The waterproof coating is mainly prepared by mixing the following raw materials in percentage by weight: 13.9%-18.3% of cationic styrene-butadiene latex, 55%-68% of nonionic emulsified asphalt, 17%-25% of a surfactant, 0.4%-0.8% of an alkali swelling thickener, 0.2%-0.4% of a polyurethane defoamer, 0.1%-0.2% of a bactericide and 0.2%-0.4% of a pH regulator. The non-cured rubber asphalt waterproof coating provided by the invention canbe constructed at normal temperature, does not generate smoke and odor in the construction and use processes, and is good in environmental protection property; the waterproof coating is a water-soluble adhesive, is high in viscosity and can be directly used on a humid basal plane.

The invention relates to a metallized safety film made by laminating and winding double-sided metallized film, the metallized thin film layer comprises a base film and a fully metallized conductive layer arranged on the base film, One side of the base film is provided with a reserved edge region, and the side opposite to the reserved edge region, of the base film is provided with a thickened region. The thickened region and the all-metallized conductive layer are spaced apart by an isolation region, and a conductive grid region is arranged on the upper part of the all-metallized conductive layer near the thickened region. Compared with the existing double-layer safety film winding, the utility rate of the base film is improved by 2.5%, the safety performance is improved, the high square resistance all-metallized conductive layer improves the self-healing property, the voltage resistance is high, the ripple resistance is strong, and the service life is long under the condition of the same safety performance.

The invention discloses self-healing polyurethane waterproof coating and a preparation method thereof. The self-healing polyurethane waterproof coating comprises a component A and a component B, wherein the component A comprises terpene phenolic resin, a plasticizer, polyester polyol, polyether polyol A, diisocyanate and a catalyst; the component B is prepared from the following components: a plasticizer, asphalt, polyether polyol A, polyether polyol B, filling oil, a filler, a thixotropic agent, a dispersing agent, a chain extender, a defoaming agent and a catalyst; the number-average molecular weight of the polyether polyol A is 2,000 to 4,000; the number-average molecular weight of the polyether polyol B is 300 to 500; the filler is alkaline earth metal hydroxide; the mass ratio of thecomponent A to the component B is 1:(2-4). The self-healing polyurethane waterproof coating disclosed by the invention has the tensile strength of polyurethane coating and the self-healing property ofnon-cured rubber asphalt waterproof coating, and also has the characteristics of excellent adhesion with the existing waterproof coiled material and the like.