16results about How to "Realize self-healing function" patented technology

The invention belongs to the technical field of water treatment, and discloses a green and environment-friendly pH-responsive corrosion inhibitor as well as a preparation method and application thereof. The corrosion inhibitor comprises the following raw materials in parts by mass: 25-30 parts of green tea polyphenol, 10-15 parts of graphene oxide nanosheets, 15-25 parts of pH response type polymer corrosion inhibition microcapsules, 5-10 parts of a beta-cyclodextrin / corrosion inhibition salt inclusion compound, 5-10 parts of an amino acid derivative polymer, 3-5 parts of a thickening agent, 180-450 parts of a solvent, and an antioxidant accounting for 0.01-0.05% of the total mass of the raw materials. And a pH regulator is added to regulate the pH of the corrosion inhibitor to 7-8. According to the corrosion inhibitor, plant extracts and non-toxic chemical substances are adopted as main components, the requirements of environment-friendly materials are met, and under the synergistic effect of all the components, the corrosion inhibitor can keep stable in a high-temperature, oxygen-containing and high-salinity environment, and anti-corrosion protection can be provided for a long time.

The invention provides high-wear-resistance waterborne polyester-polyurethane resin and a preparation method thereof, and relates to the technical field of functional resin synthesis, mixed resin comprises a polyester component containing a long-chain aliphatic group and a polyurethane component containing a siloxane group, and the preparation method comprises the following steps: synthesizing polyester introduced with the long-chain aliphatic group; the preparation method comprises the following steps: synthesizing a siloxane group-introduced polyurethane prepolymer, adding a neutralizing agent into the obtained polyurethane prepolymer to carry out a neutralization reaction, adding a chain extender, continuously stirring to react for a period of time, gradually adding water to carry out high-speed dispersion, and removing a solvent to form the waterborne polyester-polyurethane resin emulsion with introduced long-chain aliphatic groups and siloxane groups. According to the water-based polyester-polyurethane resin provided by the invention, the mechanical property, especially the wear resistance, of a material is improved in all aspects, and the material has certain scratch resistance.

The invention discloses a photosensitive functional monomer and a method for preparing a photocuring 3D printing polyurethane elastomer by using the photosensitive functional monomer, and relates to a self-repairing polymer functional material. The technical problems that an existing self-repairing polyurethane elastomer prepared through photocuring 3D printing is low in repairing efficiency and poor in mechanical performance are solved. The chemical structural formula of the functional monomer is # imgabs0 #, wherein m is 1, 2, 3 or 4; r is # imgabs 1 # and is obtained by synthesizing an intermediate from 1, 4-benzene diboronic acid, 1, 2, 4-butantriol, water and anhydrous magnesium sulfate and then reacting the intermediate with acrylic acid-2-isocyano ethyl ester. A photosensitive functional monomer, a photosensitive resin monomer, a reactive diluent and a photoinitiator are mixed into slurry for 3D printing, the polyurethane elastomer is obtained, the tensile strength of the polyurethane elastomer reaches 3-8.6 MPa, the visible light transmittance reaches 85%, the polyurethane elastomer can be 100% healed after being heated at 80 DEG C, and the polyurethane elastomer also has a self-repairing function at room temperature and can be used in the field of 3D printing.

The invention relates to a high-strength composite polyurethane foam board which is formed by stacking a lower foam layer, a middle foam layer and an upper foam layer, the overall mechanical strength is enhanced through an upper reinforcing net and a lower reinforcing net, and through carbon nanotubes evenly distributed in the foam layers, the mechanical property and toughness of the material are improved; an efficient charge transfer channel is also constructed to support a unique self-repairing function, and a polyurethane chain segment connected by reversible chemical bonds is contained in the foam board, so that the foam board can be broken and reformed to realize self-repairing when being damaged; the catalytic activity functional group modified on the surface of the carbon nano tube further accelerates the dynamic chemical bond recombination process between polyurethane chain segments, so that the self-repairing speed and efficiency are remarkably improved, when the foam board is damaged, an electric signal conducted by the carbon nano tube triggers the self-repairing process, and the self-repairing effect is improved. And a signal is quickly and accurately transmitted to a control system through the quick connector, so that the foam board can automatically restore to the original shape after being slightly damaged.

The invention provides an IPDI-coated SPUA microcapsule as well as a preparation method and application thereof, and belongs to the technical field of self-repairing coatings. The preparation method comprises the following steps: mixing sodium dodecyl benzene sulfonate, polyvinylpyrrolidone and water to obtain a water-phase solution; mixing the water phase solution with isophorone diisocyanate and polymethylene polyphenyl polyisocyanate, and carrying out homogenization, so as to obtain an emulsion; and mixing the emulsion with a diethylenetriamine aqueous solution, and carrying out an interfacial polymerization reaction to obtain the IPDI (at) SPUA microcapsule. An interfacial polymerization method is adopted, isophorone diisocyanate is used as a raw material to prepare the microcapsule loaded with the repairing agent, isophorone diisocyanate (IPDI) can react with water to generate a polyurethane polymer, the scratch defect can be effectively overcome, then corrosion of metal is slowed down, and the repairing effect of the microcapsule is achieved; the organic repairing coating can be applied to the deep sea environment.

The application discloses a self-repairing magnetic lubricating composition and a preparation method thereof, and relates to the technical field of lubricating oil.The application prepares imidazole ionic liquid containing a double bond in a side chain by subjecting diethyl allylphosphonate and 1-(3-aminopropyl)imidazole to a quaternary amination reaction, and then subjecting the imidazole ionic liquid to reaction with 3-mercapto propionic acid to form ionic liquid containing amino and carboxyl; the ionic liquid can form an amide crosslinking between adjacent molecules in high-temperature friction, the ionic liquid monomer is converted into a polymer network, cracks or pits are filled, and the self-repairing function is realized; then mesoporous ferroferric oxide is selected as a magnetic response component, the ionic liquid containing amino and carboxyl is pre-adsorbed, a magnetic field is applied, the magnetic response component is induced to be directionally enriched to a contact area of a friction pair and a micro-damage site, the ionic liquid is released at a fixed point, and through compounding of the magnetic response component and a polar anchoring monomer, the oil film stability is improved by using the synergistic effect of magnetic induction and polar adsorption.

The application relates to a mill feeding sealing device and a mounting and dismounting method, and belongs to the technical field of mills, which comprises a supporting table, one side of the top of the supporting table is fixedly provided with an output motor, and the other side of the top surface of the supporting table is provided with a crusher, the crusher comprises a discharging chute plate fixedly arranged on one side of the top of the supporting table, opposite sides of the surface of the discharging chute plate are rotatably provided with power shafts through connecting shafts, one side of the top of the discharging chute plate is rotatably provided with a feeding chute plate, and a sealing assembly is arranged between the discharging chute plate and the feeding chute plate, the sealing assembly comprises two sealing rings arranged between the discharging chute plate and the feeding chute plate, the sealing ring structure is filled with substances inside, additional internal supporting force is generated when the sealing ring structure is extruded, the sealing ring and a matching surface can be kept in stable contact, the sealing reliability of a mill feeding position is remarkably improved, and material leakage is effectively prevented.

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.

The invention provides a zinc phosphate salt-based composite pigment loaded with a nano corrosion inhibitor and a preparation method thereof, and the preparation method comprises the following steps: preparing a first solution which contains zinc ions and a nonionic surfactant; preparing a slow-release agent solution, wherein the slow-release agent solution contains corrosion inhibitor metal cations, a nonionic surfactant and a complexing agent; mixing the corrosion inhibitor solution and the first solution to obtain a first mixed solution; preparing a second solution, wherein the second solution contains phosphate ions, phosphoric acid and an organic solvent; spraying the second solution into the first mixed solution in an atomized state to obtain a second mixed solution, reacting the second mixed solution in an ultrasonic oscillation and microwave heating environment for a period of time, filtering to obtain a precipitate, and drying the precipitate to obtain the zinc phosphate salt-based composite pigment loaded with the nano corrosion inhibitor, the zinc phosphate salt-based composite pigment loaded with the nano corrosion inhibitor based on the three-dimensional structure can be prepared.

The invention provides a self-repairing hypha leather material and a preparation method and application thereof, and the preparation method of the self-repairing hypha leather material comprises the following steps: mixing mycelia with a first solution containing polyurethane to form a mixed solution, and preparing the mixed solution into capsule particles; mycelia are arranged in the capsule particles, and polyurethane is wrapped on the surfaces of the mycelia; and infiltrating the hypha leather base material in a second solution containing a polyurethane monomer and capsule particles, taking out the hypha leather base material, and carrying out hot pressing to obtain the self-repairing hypha leather material. The mycelium leather material prepared by the invention has better damage self-repairing function and durability.

The invention relates to the technical field of aluminum-based composite materials, in particular to a phase change energy storage-heat conduction synergistic aluminum-based composite material and a preparation method of the phase change energy storage-heat conduction synergistic aluminum-based composite material. 8-20 parts of a phase change energy storage material; 2-5 parts of a heat conduction reinforcing agent; 0.5 to 2 parts of a carbon nano tube; 0.2 to 1 part of an interface coupling agent; the carbon nanotubes and the aluminum nitride powder are introduced as heat-conducting fillers, so that a multi-stage heat-conducting network with the scale from nanometer to micrometer is constructed. The carbon nano tube forms a nano-scale heat conduction channel by virtue of the high length-diameter ratio and excellent axial heat conduction performance of the carbon nano tube. And the micron-sized aluminum nitride powder fills gaps among the carbon nanotubes, so that the continuity and the effectiveness of the heat-conducting network are further improved. According to the multi-scale structural design, the overall heat-conducting property of the composite material is remarkably improved, and meanwhile, the mechanical property of the material is accidentally enhanced.

The invention belongs to the technical field of material surface coating preparation, and relates to a hydrogel coating for improving the biological friction performance of a Ti6Al4V surface and a construction method of the hydrogel coating. According to the method, the surface of the Ti6Al4V is subjected to ketone saturation and alkali washing treatment, then the treated surface of the Ti6Al4V is grafted with a silane coupling agent and dopamine hydrochloride, and finally a PAM / PCD / AZOAM hydrogel coating is formed on the surface of the Ti6Al4V, so that the biotribological performance of the Ti6Al4V is improved, and the corrosion resistance and biocompatibility of the surface of the Ti6Al4V are improved. Results show that the PAM / PCD / AZOAM hydrogel coating can effectively reduce the wear rate of Ti6Al4V in simulated body fluid when the Ti6Al4V and a hard material rub against each other, the friction coefficient of a friction system is reduced, and the body fluid corrosion resistance of the surface of the Ti6Al4V is improved. Compared with the prior art, the whole process is simple, the height is controllable, the effect is outstanding, and good theoretical research value and industrial application prospects are achieved.

The invention discloses anti-crack concrete for highway construction and a preparation method thereof, and belongs to the technical field of concrete.The anti-crack concrete is prepared from, by weight, 35-45 parts of cement, 10-15 parts of aggregate, 10-15 parts of water, 10-40 parts of admixture and 5-10 parts of additive. According to the anti-crack concrete for highway construction and the preparation method of the anti-crack concrete, the anti-crack performance of the concrete is remarkably improved through the elaborately selected raw material proportion, particularly the use of the low-heat cement and the addition of the admixtures such as the polypropylene fibers, the admixtures can enhance the toughness of the concrete and reduce cracks, and the anti-crack performance of the concrete is improved. High quality and stability of the concrete are guaranteed by optimizing raw material selection, innovative application of the degradable repairing microspheres is characterized in that the degradable repairing microspheres are unique in structural design and can quickly respond when micro gaps are generated in the concrete, the microspheres are melted by injecting a dissolving solution, the gaps are filled, the self-repairing function is achieved, the durability of the concrete is improved, and the service life of the concrete is prolonged. And the maintenance cost is also reduced.

The application discloses a kind of nano graphene lubricating oil and preparation method thereof, it is related to lubricating oil technical field.The application first with modified zirconium-titanium composite particles as catalyst to catalytically synthesize base oil, improve heat resistance effect;Then under the assistance of microwave, graphene is stripped to improve the dispersibility of graphene in lubricating oil, simultaneously with the surface of modified zirconium-titanium particles form hydrogen bond network, reduce fatigue wear, prolong service life, on this basis, particle and graphene produce electrochemistry deposition in the process of friction, reach the effect of self-repairing.Modified zirconium-titanium composite particles are first by precursor sol injection pre-cooled liquid nitrogen copper mould, quick freezing, vacuum sublimation drying removes ice crystal, forms snowflake-like hierarchical porous structure, improves lubricating effect;Then low-temperature annealing, form Zr-O-Ti mixed oxide framework, effectively inhibit pore collapse, prolong service life;Again through surface hydroxyl and capillary action, adsorb ionic liquid to form coating, enhance lubricating effect.

The application discloses a kind of fiber metal laminates with microcapsule self-repairing layer and its preparation method, including metal matrix layer, interface reinforcement film layer and fiber prepreg layer, the fiber metal laminates also include microcapsule coating, and the layer plate adopts the structure of metal matrix layer / interface reinforcement film layer / microcapsule coating / fiber prepreg layer / microcapsule coating / interface reinforcement film layer / metal matrix layer for alternative lay-up.It is proposed that the new lay-up structure of fiber metal laminates is coated with a layer of microcapsule coating containing microcapsules between the interface reinforcement layer and the fiber prepreg.The microcapsule coating contains a suitable mass fraction of microcapsules, wherein the microcapsules are well mixed in the microcapsule coating and do not penetrate into adjacent layers, can produce self-healing effect, realize self-repairing function, and improve the shear strength and interlaminar adhesion of the fiber metal laminates.

The application discloses a reference voltage source time drift adaptive compensation method and system based on multiple physical fields, and belongs to the microelectronic technical field. In view of the fact that the existing reference voltage source compensation scheme cannot effectively inhibit long-term operation time drift, only considers a single temperature drift factor and needs offline calibration, the scheme collects chip junction temperature, power supply voltage and multiple physical field parameters of packaging mechanical stress in real time, constructs a time sequence characteristic vector in combination with cumulative operation time, inputs a trained neural network model to predict a voltage drift amount, and generates a control signal to dynamically adjust a DAC trimming array to realize adaptive compensation. The application can effectively improve long-term operation stability of the reference voltage source, reduce equipment operation and maintenance cost, has small hardware cost and is easy to popularize and apply.