50results about How to "Good mechanical properties" patented technology

The invention provides cast aluminum alloy high in thermal conductivity. The cast aluminum alloy is composed of, by weight, silicon of 4.0-6.5%, iron of 1.0-3.0%, copper of 0.4-1.0%, magnesium of 0.05-0.15%, manganese of 0.3-0.4%, nickel of 0.4-0.6%, tin of 0.1-0.2%, impurities of 0.05-0.2% and the balance aluminum. The cast aluminum alloy is good in castability and mechanical property, high in thermal conductivity and electrical conductivity and especially suitable for manufacturing automobile spare parts such as LED automobile lamp radiators and heating plates.

The invention relates to a method for preparing a high-performance regenerated aluminum alloy with target components from waste aluminum, and belongs to the technical field of circular economy. According to the invention, the waste aluminum is used as a main raw material, and subjected to component detection, classification, crushing, magnetic separation for iron removal and heating melting to form molten aluminum alloy, and the molten aluminum alloy is subjected to online component detection and blending, refining modification treatment, and injection refining degassing and impurity removal treatment, and finally cast into the regenerated aluminum alloy. According to the characteristics that the waste aluminum is wide in source and complex in component, the regenerated aluminum alloy with the target components is obtained by carrying out pretreatment on the waste aluminum material and carrying out online detection and adjustment on the components of molten aluminum, the problem that the components of the regenerated aluminum alloy are difficult to blend is solved, and through the refining modification treatment and the refining degassing and impurity removal treatment, the performance of the regenerated aluminum alloy is improved.

The invention discloses an electrolyte for copper foil manufacturing and application of the electrolyte. The electrolyte comprises an additive, the additive comprises an inhibitor and an auxiliary agent, and the auxiliary agent comprises at least one of polystyrene sulfonate, polyethylene sulfonate, alkyl sulfonate and alkylbenzene sulfonate; wherein the carbon atom number of the alkyl sulfonate and the alkyl benzene sulfonate is greater than or equal to 12. Through simple and convenient chemical regulation and control means such as selection and combination of electrolysis (electroplating) liquid additives, a pre-electroplated copper material obtained by electroplating with the electrolyte can form a high-proportion annealing twin boundary after being subjected to heat treatment at the temperature of more than or equal to 200 DEG C, and has unique mechanical characteristics of annealing strengthening and toughening.

The invention relates to a polymer cement waterproof coating and a preparation method thereof. The polymer cement waterproof coating comprises a powder component and a liquid component. The powder component comprises cement, talc powder, light calcium carbonate, fly ash, a thickener and a dispersant. The liquid component includes acrylic multilayer core-shell polymer emulsion, a defoaming agent, afilm forming aid, a leveling agent, and a water reducing agent. The preparation method comprises that steps of: the cement, the talc powder, the light calcium carbonate, the fly ash, the thickener and the dispersant are mixed evenly to obtain the powder component, the acrylic multilayer core-shell polymer emulsion, the defoaming agent, the film forming aid, the leveling agent and the water reducing agent are mixed evenly to obtain the liquid component, and the powder component and the liquid component are mixed evenly to obtain the polymer cement waterproof coating. The polymer cement waterproof coating provided by the invention not only has excellent waterproof and impermeability, but also has excellent heat preservation function because the acrylic multi-layer core-shell polymer particles adopt the specifically seal cavity structure.

The invention provides a tungsten-cobalt-nickel alloy and a preparation method and application thereof. The tungsten-cobalt-nickel alloy is prepared from the raw materials in percentage by mass: 30-45% of tungsten, 15-25% of cobalt and 30-55% of nickel. The preparation method of the tungsten-cobalt-nickel alloy comprises the steps: the raw materials of the tungsten-cobalt-nickel alloy are processed into an electrode ingot, and then the electrode ingot is treated to obtain a vacuum consumable electrode; and the vacuum consumable electrode is mounted into a consumable electrode vacuum furnace tobe smelted to obtain the tungsten-cobalt-nickel alloy. The tungsten-cobalt-nickel alloy is applied to weapon manufacturing. According to the tungsten-cobalt-nickel alloy provided by the invention, harmful gas elements such as oxygen, nitrogen and hydrogen and nonmetallic inclusions are deeply removed, meanwhile loose shrinkage holes in an as-cast alloy are further eliminated, solidification segregation is reduced, and purification and homogenization levels of the alloy are greatly improved.

The invention relates to a method for adsorbing uranyl ions. The method comprises the following steps of S1, radiating polymer fiber or a nonwoven cloth, so as to obtain the fiber or nonwoven cloth with hydroxyl; S2, inducing to graft the fiber or nonwoven cloth with hydroxyl with acrylonitrile by a chemical initiator, so as to obtain a grafting material containing acrylonitrile; S3, performing ammoximation reaction on the grafting material containing acrylonitrile, so as to obtain an amidoxime-based fiber adsorbing material; S4, mixing the amidoxime-based fiber adsorbing material and a solution containing the uranyl ions, and enabling the amidoxime-based fiber adsorbing material to adsorb the uranyl ions in the solution. The method for adsorbing the uranyl ions has the advantage that thecommercial polymer fiber or nonwoven cloth with low cost is treated by combining the radiation method and the chemical method, so as to prepare the amidoxime-based fiber or nonwoven cloth adsorbing material with low cost.

The invention discloses an epoxy resin composition with high elongation at break and high temperature resistance. The epoxy resin composition consists of an epoxy resin, an amine curing agent and an additive, wherein the epoxy resin comprises at least one polyfunctional epoxy resin with epoxy functionality greater than 1, the amine curing agent comprises at least one polyamine of which the numberof atomic chains between each molecule of active hydrogen amino and the adjacent active hydrogen amino is 3-9, the polyamine accounts for 25% or above of the total mass of the amine curing agent, theratio of the epoxy equivalent of the epoxy resin to the active hydrogen equivalent of the amine curing agent is 1.0:(0.8-1.2), the additive is one or more of a flame retardant, a demolding agent, a coupling agent, a dispersing agent, a defoaming agent and a stabilizing agent, and the additive accounts for less than 40% of the total mass of the epoxy resin and the amine curing agent. After the composition is cured, the glass-transition temperature can be greater than or equal to 120 DEG C, the elongation at break is greater than 5%, and the composition has high elongation at break and high temperature resistance.

The invention discloses a metal plate strip production method for forming a U-shaped material through continuous extrusion and flattening the U-shaped material on line. The method comprises the steps that A, a coiled rod material enters a straightening device through a paying-off device and is fed into an extrusion wheel groove of a continuous extrusion machine through a compacting wheel, and the rod material enters a cavity under the driven of friction force of the extrusion wheel groove and is extruded through a mold in the cavity to be U-shaped material; B, the U-shaped material is cooled and then flattened on line through a flattening device to form a plate strip blank, and the plate strip blank is coiled through a coiling device to form the coiled plate strip; and C, the coiled plate strip is rolled, shaped, annealed and cut to form the finished product plate strip product. According to the metal plate strip production method for forming the U-shaped material through continuous extrusion and flattening the U-shaped material on line, the quality problem of a nonferrous metal plate strip blank is solved, the product has the excellent mechanical performance, and large-length large-width efficient low-cost continuous production for the plate strip product is achieved.

The invention discloses high-strength heat-resistant concrete and a preparation method thereof. The high-strength heat-resistant concrete comprises the following components in parts by weight: 340-360parts of cement, 140-160 parts of fly ash, 750-800 parts of crushed stone, 730-753 parts of fine sand, 110-120 parts of coarse aggregates, 1-5 parts of a water reducer, 170-180 parts of water, 1-5 parts of polypropylene fibers, 45-80 parts of mineral powder, 1-5 parts of an early strength agent and 20-30 parts of composite fibers; and the composite fibers comprise 5-10 parts of aramid fibers, 3-6parts of glass fibers, 5-10 parts of resorcinol-formaldehyde resin and 0.3-1.4 parts of copolymerized formaldehyde. The high-strength heat-resistant concrete has the advantages of high strength and good heat resistance.

The invention belongs to the field of nodular cast iron casting, and relates to nail-like-graphite-free nodular cast iron for wind power equipment and a preparation method thereof. By optimizing the component content of the nodular cast iron, intake of harmful elements is reduced, the carbon content is strictly controlled in the eutectic period, after a large number of silicon solid solutions are formed, dissolution of carbon in hexagonal lattices is accelerated, and precipitation of a large number of carbon on the grain boundary is prevented. At the moment, anti-nodulizing segregation elements with a high content exist on the grain boundary, and the diffusion and accumulation of carbon to a nucleation substance from different directions are prevented from being blocked, so that graphite is balled, and nail-like graphite is prevented from being formed. In the preparation process of the nodular cast iron, the pouring temperature, the mold filling speed and the heat preservation time are strictly controlled, segregation of anti-nodulizing elements is reduced, the forming probability of the nail-like graphite is reduced again, and the physical performance of the cast iron is guaranteed to a certain degree.

The invention provides a method for preparing a 316 stainless steel complex thin-wall pipeline through the selective laser melting forming technology. The method comprises the steps that firstly, a three-dimensional digital model of the complex thin-wall pipeline is constructed; secondly, the three-dimensional digital model is repaired through three-dimensional repairing software; and thirdly, the repaired three-dimensional digital model is sliced through slicing software and converted into two-dimensional slice information, and a machining program file is generated. The method has the beneficial effects that firstly, the time for forming the complex thin-wall pipeline is short through the selective laser melting forming technology, procedures are reduced, and the manufacturing period is shortened; secondly, the quality of the complex thin-wall pipeline formed through the selective laser melting forming technology is high, consistency between the complex thin-wall pipeline and the digital model is good, and the qualification rate is high; and thirdly, the 316 stainless steel complex thin-wall pipeline formed through the method is uniform in inner structure, good in surface quality and excellent in mechanical performance.

The invention discloses a manufacturing process of an ultra-large low-temperature liquid-filled insulating layer. The manufacturing process comprises the following steps: A, cleaning the surface of atank body first; B, then conducting priming spraying on the surface of the tank body; C, spraying a first layer of foam; D, installing a first layer of glass net on the first layer of foam; E, spraying a second layer of foam on the outer surface of the first layer of glass net; F, then installing aerogel/rock wool; G, spraying a third layer of foam; H, installing a second layer of glass net outside the third layer of foam; I, spraying a fourth layer of foam outside the second layer of glass net; and J, finally spraying polyurea outside the fourth layer of foam to complete manufacturing of theinsulating layer. The manufacturing process is simple, the cracking risk can be reduced, and the stability of an insulating system is maintained.

The invention discloses a free-cutting aluminum alloy. The free-cutting aluminum alloy comprises, by weight, 3-3.9% of Si, 0.7-0.9% of Mg, less than or equal to 0.15% of Fe, 0.2-0.3% of Cu, 0.25-0.35%of Cr, 0.15-0.25% of Ti, and the balance aluminum; and after the free cutting aluminum alloy is cut, the chip length is less than or equal to 10 mm. According to the free-cutting aluminum alloy, by increasing the content of silicon in the aluminum alloy, the alloy produces a large number of excess Si particles, in the cutting process of an aluminum workpiece, an aluminum matrix is subjected to plastic deformation, while the Si particles are not subjected to plastic deformation, as a result, the Si particles generate stress concentration, and with the gradual accumulation of internal energy ofthe Si particles, the Si particles are subjected to brittle cracking (failure) finally, and the fracture is transmitted along the Si particles to lead to the fracture of aluminum chips finally.

The invention relates to a method for manufacturing an aluminum and aluminum alloy bus for electricians. The method includes the steps that (1) continuous casting aluminum and aluminum alloy poles are upwards pulled, wherein high-quality aluminum pigs serve as raw materials, stirring and degassing are carried out on melt through an on-line degassing and stirring device, and the aluminum and aluminum alloy poles are upwards pulled through a pulling machine in a clutch and vacuum mode; (2) the aluminum and aluminum alloy bus is continuously extruded, wherein the aluminum and aluminum alloy poles serve as raw materials, and the aluminum and aluminum alloy bus is produced through a continuous extrusion unit; (3) stretching is carried out. According to the aluminum and aluminum alloy bus manufactured through the steps, the R-state bus elongation is larger than 25%, and the strength of extension is larger than 75 MPa; the Y-state bus elongation is larger than 4%, and the strength of extension is larger than 120 MPa; the electric conductivity is larger than or equal to 62% of IACS. The method has the advantages of being efficient, high in yield, high in work efficiency, high in electric conductivity of products and excellent in mechanical property, saving energy and the like.

The invention provides a high-performance rubber material for an external windshield of a high-speed rail and a compression molding preparation method of the high-performance rubber material. The high-performance rubber material for the external windshield of the high-speed rail is characterized by comprising the main production raw materials of a crude rubber substrate, a ceramic-based nano composite, a fire retardant, nano-silica, a plasticizer and a cross-linking agent, wherein the crude rubber substrate is a mixture of maleic anhydride grafted ethylene propylene diene monomer and silane-modified ethylene propylene diene monomer which are appropriate in amount, and the mass ratio of maleic anhydride grafted ethylene propylene diene monomer to silane-modified ethylene propylene diene monomer is (80:20)-(60:40). The high-performance rubber material for the external windshield of the high-speed rail has favorable mechanical performance, low-smoke zero-halogen flame retardancy and high-low-temperature resistance.

The invention provides an impact needle of a spray head of a large character code spraying machine. The head of the impact needle is positioned in a cavity between an upper ink fountain and a lower ink fountain; the tail of the impact needle stretches into an inductance coil and is connected with a movable core; the inductance coil drives the impact needle to move; a group of spray holes are formed in the upper ink fountain; ink can be accommodated in the cavity; and the impact needle moves to ensure that the ink is sprayed from the spray holes. The impact needle comprises a needle rod, wherein an impact block is arranged on the head of the needle rod and manufactured by forming a polytetrafluoroethylene material; a spring is arranged on the needle rod; the fixed end of the spring is connected to the needle rod; and the movable end of the spring is connected with the impact block. The impact block at the tail end of the impact needle is manufactured by forming polytetrafluoroethylene with an extremely low friction coefficient, and high mechanical property can be kept in a wide temperature range, so that the code spraying machine normally works in various environments, the maintenance cost of equipment can be reduced, and the service life is prolonged.

The invention discloses a 3D printing tissue engineering scaffold and a preparation method thereof. The 3D printing tissue engineering scaffold is a porous laminated structure obtained by sintering, layer by layer, an artificial polymer-hydrogel composite micro ball which contains a calcium and phosphorus active biological material, the content of which changes in a gradient mode, according to a designed three-dimensional model by using a selective laser sintering rapid prototyping technology. The hydrogel composite micro ball is a hydrogel micro ball containing KGN, which is wrapped with an artificial medical polymer material and a calcium and phosphorus active biological material, or a hydrogel micro ball containing KGN, which is wrapped with an artificial medical polymer material. According to the 3D printing tissue engineering scaffold, the KGN is wrapped in the hydrogel micro ball and a calcium phosphate active biological material and an artificial polymer material are wrapped onthe surface of the hydrogel micro ball, through slow degradation of the surface artificial polymer material and hydrogel, the slow release of the KGN in a human body can be achieved, so that the repair of bone and cartilage tissue can be controlled.

The invention relates to an antistatic electronic jacquard trademark machine and discloses a preparation method of the antistatic electronic jacquard trademark machine. An obtained coating not only has an excellent anti-static property, but also has a better mechanical property, in addition, the raw materials of the preparation method are easy to get, the preparation cost is low, and the preparation method has very high promotion and application values. The anti-static coating is coated on electronic jacquard trademark machine, so that the antistatic electronic jacquard trademark machine is obtained.

The invention discloses a system and method for preparation of an ultrahigh vacuum electromagnetic suspension material. The system comprises a cavity, a vacuum acquisition unit and a control system, wherein devices associated with the cavity include a sample suspension mechanism, a sample transmission mechanism, an image collection unit, a sample temperature monitoring mechanism, a sample position detection mechanism, a pressure casting unit and safety and accessory facilities. The system and method disclosed by the invention have the beneficial effects that metal and alloy with large volumes are prepared under a high-vacuum and container-free condition based on principles of electromagnetic induction, so more extensive and accurate data of basic thermal physical natures is obtained, and reliable original data can be provided for high-precision simulation computation; by the control system, temperatures and suspension states of the liquid metal at a suspended state can be controlled flexibly and effectively; and in combination with an image collection system, the temperature monitoring mechanism and a pressure casting system, extensive experimental research on high-temperature liquid metal solidification and high overcooling can be carried out, and the liquid metal can be directly shaped under a highly overcooled and has excellent mechanical properties.

The invention discloses a 3D printing polystyrene resin and a preparation method thereof. The method adopts bulk polymerization, styrene and acrylate are added to a chain transfer agent and a solvent,and bulk polymerization is performed at a certain temperature in the presence of an initiator to obtain the product, wherein raw materials comprise 50-95 parts of styrene, 5-50 parts of acrylate, 5-15 parts of the solvent, 0.1-1 part of the initiator and 0.1-3 parts of the chain transfer agent. The 3D printing polystyrene resin is obtained by bulk polymerization, has the characteristics of simplicity in post-treatment, pureness, adjustable molecular weight, simplicity in operation and wide application prospect, and does not block the nozzle of a 3D printer.

The invention discloses a reinforced flame-retardant low-warpage PBT alloy material and a preparation method thereof. The alloy material comprises the following components in parts by weight: 35-50 parts of polybutylene terephthalate, 5-15 parts of polycarbonate, 15-30 parts of glass fiber, 5-15 parts of an inorganic filler, 5-20 parts of a compound flame retardant, 5-10 parts of a toughening agent, 0.2-0.4 parts of a compound antioxidant, 0.1-0.3 parts of a lubricant, 0.1-0.3 parts of an ester exchange inhibitor, and 0.1-0.3 parts of an anti-dripping agent. The preparation method comprises the following steps: uniformly mixing all the materials except the glass fiber at a high speed, respectively feeding the mixed material and the glass fiber into a main feeding hole and a side feeding hole of a double-screw extruder, and finally forming the material. The amorphous polymer PC is introduced into the raw materials, so that the crystallinity of the system is reduced, the warping propertyof the PBT material is improved, and the PBT can be reinforced and toughened; and a compound flame retardant is introduced, so that the product has a flame-retardant characteristic. Finally, the PBT/PC alloy material has good mechanical properties, flame retardance and warping resistance, so that the application range of the PBT/PC alloy material in the fields of high-grade electrical components,household electrical shells and the like is expanded.

The invention relates to a preparation method of a cellulose acetate nanofiber composite aerogel for heat preservation, which comprises the following steps: cutting a cellulose acetate nanofiber membrane into pieces, adding the pieces into water, conducting homogenizing to obtain a cellulose acetate nanofiber dispersion liquid, and conducting freeze-drying and cross-linking to obtain the cellulose acetate nanofiber composite aerogel. The thermal conductivity of the cellulose acetate nanofiber aerogel obtained through the method is 0.030 W/(m.k)-0.045 W/(m.k), the density is 2 mg.cm<-3> to 25 mg.cm<-3>, the compression strength is 1 kPa-20 kPa, the rebound rate is 80% or above after 100 times of compression, and the cellulose acetate nanofiber aerogel has good application prospects in the field of warm keeping clothes.

The invention relates to high-strength aluminum alloy and a production process thereof, and belongs to the technical field of aluminum alloy production processes. The high-strength aluminum alloy comprises the following components: aluminum, silicon, magnesium, titanium, iron, calcium, lead and cadmium. The production process comprises the following steps: taking ADC12 (aluminum-alloy die castings 12) aluminum alloy as a raw material and aluminum-silicon alloy, aluminum-antimony intermediate alloy, magnesium blocks and double-zero aluminum as auxiliary materials, melting and refining through an industrial furnace, and checking in combination with related components to obtain the high-strength aluminum alloy. The high-strength aluminum alloy is excellent in mechanical property; a heat treatment process is not required, less waste is achieved in the process, the energy consumption is saved, and the production cost is greatly saved; meanwhile, the high-strength aluminum alloy has a qualified metallographic structure and can serve as a pressure casting material of an ultrathin wall bearing part; the production process is simple and reasonable, the production efficiency is high, few product wastes are generated, and the product quality is easily guaranteed.

The invention relates to the field of ceramic materials, in particular to a manufacturing method of a high-breaking ceramic protective tube porcelain body, which comprises the following steps: weighing and drying raw materials, adding the raw materials except aluminum oxide into a ball mill, then adding water and a ball milling medium, drying after ball milling to obtain first powder, adding aluminum oxide, the first powder and oleic acid into the ball mill, and continuing ball milling for 18-20 hours to obtain second powder; second powder is obtained; the second powder, white wax and beeswax are mixed, granulated and tabletted to obtain a green body, the green body is firstly subjected to supercritical CO2 fluid dewaxing and then subjected to short-time thermal dewaxing, and after dust removal and fettling, the green body is put into a high-temperature kiln to be sintered. When the protective tube works, heat in the porcelain body can be released in time, and the breaking capacity of the ceramic protective tube is improved.

The invention discloses a preparation method of a polyolefin nanometer composite material. The method is characterized by comprising the following steps that 1, polyolefin particles are supplied; 2, after a precursor of an inorganic nanofiller and a solvent are mixed, the mixture is added into polyolefin particles to be dipped, and a mixed solution is obtained; 3, after the mixed solution is frozen, vacuum drying is performed, refrigerating and drying are performed again circularly for 5-20 times, and dried particles are obtained; 4, a hydrochloric acid/ethanol solution is steamed into the dried particles in a steam mode, and particles fumigated by steam are obtained; 5, the particles fumigated by steam are washed with water 1-5 times, and sufficient drying is performed to obtain solid particles; 6, the solid particles are stirred at the temperature of 120-260 DEG C and the speed of 10-300 rpm for 1-60 min, and forming is performed to obtain the polyolefin nanometer composite material.When the addition amount of the nanofiller is larger than 10% and smaller than 30%, the polyolefin nanometer composite material with the uniform nanofiller dispersion and excellent mechanical property can still be obtained.

The invention discloses a grape skin edible food packaging material and a preparation method thereof. The grape skin edible food packaging material is prepared from the following components in parts by mass: 30 to 50 parts of grape skin, 15 to 30 parts of starch, 3 to 8 parts of pectin, 1 to 6 parts of agar, 4 to 10 parts of citric acid, 5 to 15 parts of carboxymethylcellulose, 2 to 8 parts of saccharose, 1 to 5 parts of plasticizer, and 30 to 60 parts of water. The edible film which is prepared by adopting the grape skin as a raw material and adding a certain amount of a thickener and a plasticizer is edible and rich in specific nutrients of fruits and vegetables, and has an important meaning in comprehensive application of the fruits and the vegetables and the packaging industries. The white pollution problem caused by plastic inner packaging is solved, and the grape skin edible food packaging material has a certain practical value and is an ideal food inner packaging material. In addition, the grape skin contains a large amount of dietary fiber, and has better physical and mechanical performance, resistance to oxidation and the like.

The invention belongs to the technical field of medicines, and particularly relates to olanzapine and an oral instant film containing the olanzapine. The oral instant film is composed of olanzapine, a film-forming material, a solubilizer, a plasticizer and other auxiliary materials, wherein the solubilizer is dibasic acid. According to the invention, the dissolving capacity of the olanzapine in the hydrophilic film-forming material can be obviously improved under the action of the solubilizer, so that the content of the main drug is uniform, the dissolution is rapid, the oral administration has no gritty feeling, the mechanical property of the product is good, meanwhile, no organic solvent is used in the whole production process, and the production safety is high. The preparation can be rapidly dissolved in the oral cavity, does not need to be taken with water, can effectively avoid the common phenomena of vomiting and drug storage of schizophrenic patients, and helps to improve the medication compliance of patients with schizophrenia.

The invention discloses a flame-retardant polyester adhesive tape base material. The adhesive tape base material comprises a polyester chip, a dispersing agent, a heat stabilizer, magnesium hydroxide, nano-zinc oxide and a functional auxiliary; the functional auxiliary is of a microcapsule structure, the particle size range of the microcapsule structure is 10-100 microns, the thickness ratio of a wall material to a core layer is 1:18-1:22, the core layer is composite powder, and the wall material is a polyester film; the composite powder is a mixture which contains titanium dioxide and silicon dioxide, and the particle size range is 50-100 nm. The adhesive tape base material has the advantages of good heat resistance and mechanical strength, flame retardation, good toughness, good transparency and the like.

The invention belongs to the field of preparation of hydrogels, in particular to a preparation method of a silver nanowire/PBAT (poly(butyleneadipate-co-terephthalate)) nanometer fiber/polyvinyl alcohol composite conductive hydrogel, which solves the problems of long preparation cycle and low mechanical strength in the existing conductive polyvinyl alcohol composite hydrogel. The preparation method comprises the following steps of using glycerol-water binary mixed solvent to replace a single water solvent in the traditional hydrogel, and using silver nanowires and PBAT micro-nanometer fibers as reinforcing materials to prepare the polyvinyl alcohol composite hydrogel. The preparation method has the advantages that the preparation cycle of the polyvinyl alcohol conductive hydrogel is greatly shortened; the prepared polyvinyl alcohol composite conductive hydrogel has good mechanical property, good biocompatibility, biodegradability and the like.