100results about How to "Good ductility" patented technology

Disclosed is a high-strength steel plate having superior ductility and stretch flangeability and a tensile strength (TS) of 980 MPa or higher, and having 0.17-0.73% C, 3.0% or less Si, 0.5-3.0 or less Mn, 0.1% or less P, 0.07% S, 3.0% or less Al, 0.010% or less N, and 0.7% or more Si + Al, an area ratio of martensite of 10-90% with respect to the entire steel plate composition, a residual austenite amount of 5-50%, and an area ratio of bainitic ferrite in the upper bainite of 5% or less with respect to the entire steel plate composition. Twenty-five percent or more of the aforementioned martensite is tempered martensite, and the total of the area ratio of the aforementioned martensite with respect to the entire steel plate composition, the aforementioned residual austenite amount and the area ratio of the aforementioned bainitic ferrite in the upper bainite with respect to the entire steel plate composition is 65% or more. The area ratio of polygonal ferrite with respect to the entire steel plate composition is 10% or less (including 0%), and the average amount of C in the aforementioned residual austenite is 0.70% or more.

The invention relates to a metal surface multilayer nickel plating process with excellent corrosion resistance. The manufacture process comprises the following steps of: plating a semi-bright layer firstly, plating a high-sulfur layer secondly, plating a bright layer thirdly and plating a nickel sealing layer fourthly from inside to outside. By adopting the technical scheme, the invention has the advantages of improving plating covering effect of a low current area, increasing the potential difference among nickel layers, protecting a matrix, slowing down the corrosion and greatly strengthening the corrosion resistance of the matrix by adopting the low concentration multilayer nickel (semi-bright nickel, high-sulfur nickel, bright nickel and nickel sealing) plus chrome plating process in an electroplating process, and by adopting the semi-bright nickel plating at the bottom layer, excellent leveling capability and scalability can be obtained, a plating solution is easy to control, harmful products cannot be produced after long-time operation, and the plating contains no sulfur and has higher corrosion resistance.

The invention discloses a compound microbial agent as well as a preparation method and an application thereof and relates to the technical field of microbial agents. The microbial agent is prepared from components in parts by weight as follows: 20-40 parts of trichoderma, 30-75 parts of bacillus, 3-8 parts of penicillium, 5-10 parts of actinomyces and 25-50 parts of a carrier. By cooperation of all stains, reasonable matching of content and addition of the carrier, the compound microbial agent has the advantages of high activity, high stability and good effects of controlling plant root rot and promoting plant growth. The preparation method of the compound microbial agent is simple in process and convenient to operate and facilitates industrial application. Besides, the invention also discloses an application of the compound microbial agent in control of the plant root rot.

The invention discloses an atmosphere pollution control electricity utilization data analysis platform based on big data sharing. The platform comprises an electricity utilization information acquisition unit, a transmission module and a system main station. The electricity utilization information acquisition unit comprises a metering terminal device and an acquisition storage device, which are installed in the place. The system main station comprises a server group and a data analysis center and is connected with the electricity utilization information acquisition unit and the transmission module. The data analysis center comprises a big data sharing analysis model based on the BP neural network. According to the invention, based on an electricity utilization information acquisition system, by taking the big data analysis and prediction as a technical means, remote monitoring of enterprises related to the atmosphere pollution and industrial electricity utilization data of each place is achieved; and strong support is provided for formulation of pollution management and control measures.

The invention relates to a square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete, which comprises a square steel tube, a stirrup, vertical ribs and high-strength concrete, wherein at least three vertical ribs are arranged in the square steel tube along the axial direction of the square steel tube; the stirrup is a single ring or spirochete, and is arranged along the axial direction of the vertical ribs; the stirrup is tangent to the inner surface of the square steel tube and is fixedly connected with the vertical ribs; and the high-strength concrete is cast in the square steel tube. The invention has the advantages of high bearing force, good stretchability, convenient construction, low cost, high bending resistant bearing force and bending resistant rigidity, and can replace the traditional square steel tubular columns with high-strength concrete, structural steel high-strength concrete columns and round steel tubular columns with high-strength concrete, shorten construction period and improve safety performance of buildings.

Embodiments herein present the invention of a class of Tungsten (W) free Cobalt based (γ-γ′) superalloys with the basic chemical composition comprising in % by weight: 0.5 to 10 Aluminium (Al) and 1 to 15 Molybdenum (Mo) with at least one or both of 0.5 to 12 Niobium (Nb) and 0.5 to 12 Tantalum (Ta), with the remainder being Cobalt (Co). Some part of the cobalt can be replaced by nickel (50% or less). In Nickel added alloys, some part of either cobalt of nickel can be replaced by at least one among the transition metal selected from the group consisting of 10% or less Iridium, 10% or less Platinum, 10% or less Palladium, 15% or less Chromium and combination thereof. Again in nickel added alloys, further addition of at least one among the transition metals zirconium (5% or less), hafnium (5% or less), vanadium (5% or less), titanium (5% or less), and yttrium (5% or less), boron (2% or less), carbon (2% or less), rhenium (10% or less), ruthenium (5% or less) for further fine tune the solvus temperature, volume fraction of γ′ and creep properties.

The invention relates to a preparation method of a pesticide effervescent tablet, comprising the following steps of: (1) with one or the combination of more of bentonite, diatomite, white carbon black, maize starch, white clay, kaolin, superfine silica gel powder and aluminum-magnesium silicate as a carrier, mixing the mixture with pesticide raw materials, freezing at -10DEG C and crushing to obtain the nano carrier pesticide; (2) premixing the nano carrier pesticide with the dried acid source substances, a carbon dioxide source, a caking agent, a wetting dispersant, a disintegrating agent and a lubricating agent, roughly crushing and mixing, crushing by a jet pulverizer and then adding the crushed materials in a conical mixer blender and mixing to allow the materials to completely pass through a standard sieve with over 300 meshes to obtain dry powder; and (3) pressing the dry powder into a tablet with the preset size by using a tablet compression machine in the environment that the temperature is 15-25DEG C and the humidity is below 40 percent, i.e. obtaining the pesticide effervescent tablet. The method is simple, low in cost and environmentally-friendly; and the pesticide effect and the utilization rate of the pesticide of the pesticide effervescent tablet are superior to those of the conventional aqueous emulsion.

The invention belongs to a building structure member in the technical field of building engineering, and particularly relates to a concrete-filled square steel tubular column with a built-in spiral stirrup. The concrete-filled square steel tubular column comprises a square steel tube, the spiral stirrup, a longitudinal reinforcement and core concrete, wherein the longitudinal reinforcement is arranged on the inner wall of the spiral stirrup to form a spiral reinforcement cage which is arranged in the center of the square steel tube, the core concrete is filled in the internal space of the square steel tube to form the concrete-filled steel tubular column with the built-in spiral stirrup. The concrete-filled steel tubular column with the built-in spiral stirrup has the advantages of being high in bearing capacity, good in ductility, excellent in anti-seismic property, simple in structure, simple and convenient to construct, and good in economy.

The invention discloses a flip-chip LED chip and a manufacturing method thereof, belonging to the field of semiconductor technology. The flip-chip LED chip comprises a substrate, an N-type semiconductor layer, an active layer, a P-type semiconductor layer, a transparent conductive film, a reflective layer, a P-type electrode, an N-type electrode, a passivation layer, a P-type pad, an N-type pad and an anti-pin layer; The P-type pad is arranged on the passivation layer around the P-type electrode and the region where the P-type electrode is located, and the N-type pad is arranged on the passivation layer around the N-type electrode and the region where the N-type electrode is located. The anti-thimble layer is arranged on the passivation layer between the P-type pad and the N-type pad; Theanti-thimble layer is formed of a metal material, and the anti-thimble layer is spaced between the P-type pad and the N-type pad. As that metal material is adopt to form the anti-thimble layer, the metal material has good ductility, the anti-thimble lay can effectively release the acting force of the metal thimble, the chip process layer is for with good protection, and the metal thimble can effectively prevent the chip process layer from being damaged by the metal thimble.

The invention discloses 3D-printing quick-shaping Fondant food materials. The Fondant food materials comprise the following raw materials in percentage by mass: 25%-30% of candyfloss, 55%-60% of icing, 6%-10% of butter, 4%-6% of corn syrup, 0.5%-1% of tylose powder and 1.5%-3% of white oil. The invention further discloses a preparation method of the 3D-printing quick-shaping Fondant food materials. The invention further discloses a use method of the 3D-printing quick-shaping Fondant food materials. The Fondant for the 3D-printing quick-shaping Fondant food materials disclosed by the invention is good in ductibility, high in air-drying speed, and hard, crisp and thin; compared with food printing materials with poor structural strength, such as chocolates and cream, the Fondant has the advantages that printed articles have better surface finish and are higher in shaping accuracy; and in addition, the Fondant food materials are simple in making technology and easy to operate, and produced materials can be directly used for 3D printing after being heated.

The invention relates to a lubricant used for swing and rolling forming of tantalum and tantalum alloy parts and a use method thereof. The lubricant contains the components: (1) any two of molybdenum disulfide, graphite and boron nitride, (2) any one or two of borax, ceresin wax, silica and sodium sulfate and (3) water. The lubricating treatment process comprises the following steps of surface cleaning, preheating, spraying and drying. The lubricant and the use method thereof can meet the demand of carrying out severe deformation swing and rolling forming on tantalum and tantalum alloy blanks, thereby effectively reducing the friction between blanks and moulds; products have high surface quality, and the service lives of the moulds are long.

The present invention discloses a FRP reinforced concrete tube tablet with embedded reinforced steel. The concrete tube is made of FRP tendon mesh and poured concrete with embedded reinforced steel;In the concrete; the FRP tendon mesh is bundled by the FRP stress tendon of the embedded reinforced steel, the FRP distribution tendon of the embedded steel bars, the FRP waist tendon and the FRP stirrule of the embedded steel bars;And tied into FRP tendons with embedded reinforced bars for concrete tubes, which can comprehensively use the advantages of FRP and reinforced bars to fundamentally solve the problem of rust and durability in the pipes.Low, deformation and crispy destruction mechanics characteristics.Preparation of FRP reinforced concrete tubes that take into account lightweight, high -strength, high elastic modulus, high latency, high cost performance and corrosion resistance.The pipes are suitable for tunnel engineering with high requirements for mechanical performance and corrosion resistance, and have a wide range of application prospects.

The invention discloses a hand cleaning gel, and a preparation method and a use thereof. The hand cleaning gel comprises 0.5-15% by mass of polyvinyl alcohol, 0.5-5% by mass of boric acid and/or borax, 0-15% by mass of an additive, and 65-99% by mass of water, wherein the content of the additive is not zero, the additive comprises a sterilization antiseptic, an essence and a moisture retention component, and the hand cleaning gel is a hydrogel in state. The hand cleaning gel has a simple preparation method and a low cost; the hand cleaning gel has a strong adhesion, and substances comprising scales, metabolites and the like on the skin surfaces and in the deep slits can be effectively removed through rubbing a proper amount of the hand cleaning gel in hands, so the hand cleaning gel has a deep cleaning effect; and the hand cleaning gel has the advantages of no need of water, use convenience, no liquid residue, good skin endophilicity, smooth and comfortable skins after use, carrying convenience, and repeated use. The hand cleaning gel is especially suitable for travels, outdoor works, and founders, miners and builders having the scales which are difficult to remove.

This invention relates to a car device for preventing flood damage, it uses the material of better ductility, wear resistant and waterproof to manufacture the cover which divided into upper and lower parts corresponded each other, wherein several airbag rooms are formed by gluing on each side edge with machine; before gluing with machine, an airbag is set in each airbag room, and each airbag room is dense impervious, an air inlet of each airbag is protruding out of the cover, so thus the joint of the air inlet and the cover is also dense impervious; for example, put the cover under a car and set the air through the air inlet to the airbag to inflate the cover and keep the car in high location, thus when the flood comes, the car can float on the water and avoid flood damage.

The invention relates to a rectangular concrete filled steel tube column and steel beam single-side bolt connecting joint and a construction method of the rectangular concrete filled steel tube column and steel beam single-side bolt connecting joint. The connecting joint comprises a rectangular steel tube column and a steel beam, an end plate is welded to the end of the steel beam and fixedly installed on the side wall of the steel tube column through fasteners, and multiple corresponding bolt holes are longitudinally formed in the end plate and the steel beam in a pairwise mode. A reinforcement structure is arranged in the joint core region of the steel tube column. Compared with the prior art, the novel connecting joint has the advantages that the bearing capacity is high, the plasticity and ductility are good, the energy-dissipation capacity is high, and the mechanical property is reliable; compared with a rigid joint where an outer reinforcement ring is adopted, the concrete filled steel tube column and steel beam single-side bolt connecting joint does not need to be welded on site, all the machining processes, except for concrete pouring, are finished in a factory, and therefore machining quality is more reliable; the concrete filled steel tube column and steel beam single-side bolt connecting joint is convenient to install on site and high in construction speed.

The invention provides a thermoelectric element, which comprises a thermoelectric layer, a barrier layer and an electrode layer. The barrier layer is located between the thermoelectric layer and the electrode layer and is made of elemental aluminum and an aluminum alloy, and the thermal expansion coefficient of the thermoelectric layer and the thermal expansion coefficient of the electrode layer are 15*10<-6>/DEG C-25*10<-6>/DEG C. Through arrangement of the barrier layer, the serious diffusion phenomenon is prevented from being generated between interfaces during direct contact between the thermoelectric layer and the electrode layer; the barrier layer has the high thermal conductivity and electric conductivity and good ductility; and the thermal expansion coefficient of the barrier layerapproximates to the thermal expansion coefficient of the thermoelectric layer and the thermal expansion coefficient of the electrode layer, thus no crack occurs between the interfaces, the bonding strength is high, the interfaces are stable in structure, the thermoelectric efficiency of the thermoelectric layer and the electrical conduction efficiency of the electrode layer are ensured, the thermoelectric conversion efficiency and stability of the thermoelectric element and an thermoelectric device are kept advantageously, and thus the service life of the thermoelectric element and the thermoelectric device is prolonged.

Disclosed is a high-strength steel plate with excellent warm workability that has a component composition comprising, in mass %, 0.05 to 0.4% C, 0.5 to 3% Si+Al, 0.5 to 3% Mn, no more than 0.15% P (not including 0%), and no more than 0.02% S (including 0%), with the remainder comprising iron and impurities, and a composition that includes a total of 45 to 80% martensite and/or bainitic ferrite in terms of the area ratio relative to the entire composition, 5 to 40% polygonal ferrite in terms of the area ratio relative to the entire composition, and 5 to 20% retained austenite in terms of the area ratio relative to the entire composition, wherein the C concentration (C_γR) within said residual austenite is in the range of 0.6 mass % to less than 1.0 mass %, and that furthermore may include bainite. In the high-strength steel plate, TRIP effects are achieved to the fullest extent in warm working, and increased ductility over prior steel plates is reliably achieved.

The invention relates to the field of bakery product processing, in particular to Guangdong amorphophallus albus and blueberry stuffed mooncakes. The Guangdong amorphophallus albus and blueberry stuffed mooncakes comprise skin and filling. The filling is prepared from 100 parts of smashed amorphophallus albus, 10-30 parts of blueberry jam, 10-20 parts of modified starch, 10-30 parts of maltose and 10-20 parts of edible oil. The filling is prepared in the steps of smashed amorphophallus albus making, blueberry jam making, filling making, refrigeration and the like. Amorphophallus albus and blueberry are used as main materials to make the Guangdong amorphophallus albus and blueberry stuffed mooncakes with novel taste and color, the filling looks bright and tastes special, the mooncakes can strengthen the spleen and stomach and protect eyesight and also have other health-care functions, and the style of traditional Guangdong mooncakes is reserved.

The invention discloses a PVC paint film with long afterglow. The PVC paint film comprises a PVC film and a noctilucent coating on the PVC film. The noctilucent coating is prepared from the following raw materials by weight: 100 parts of acrylate or polyurethane, 10 to 33.3 parts of a curing agent, 10 to 33.3 parts of a solvent and 0.5 to 5 parts of a rare earth noctilucent pigment. Meanwhile, the invention also discloses a preparation method for the PVC paint film with long afterglow. The PVC paint film with long afterglow prepared by using the method has good ductility, weatherability and scratch resistance and excellent long-afterglow noctilucence performance; and the luminescence duration of the film can reach 6 to 8 h, far longer than the luminescence duration (2 to 3 h) of common PVC films.

The invention discloses a section steel embedded type FRP (Fiber Reinforce Plastic) sectional material arch supporting structure. The supporting structure is composed of a section steel embedded type FRP sectional material arch and a vertical steel bar by welding, and sand is stuck on an outer layer of the FRP sectional material arch. In a tunneling project, underground water is enriched and the environment is bad, and an arch supporting structure is used as one part of tunnel permanent support and has the problems of easiness of being rusted and poor durability. An FRP sectional material has the advantages of light weight, high corrosion resistance, high strength and the like; however, the FRP sectional material also has the problems of high price, low elastic modulus, large deformation and brittle failures. Traditional section steel is embedded into the FRP sectional material and respective advantages of FRP and steel can be comprehensively utilized, so that the problem of steel corrosion is radically solved and the mechanical properties of the FRP are improved. The supporting structure disclosed by the invention integrates the advantages of high elastic modulus and high ductility of the steel, and the light weight, high strength and high corrosion resistance and the like of the FRP, and has a good application prospect in the tunneling project.

The invention discloses an integrated all-wireless transmission method and a terminal for a video conference system. The terminal comprises a video conference terminal, a conference projector, a demonstration computer, a Bluetooth speaker, a WIFI wireless microphone and a far-end micro control unit, wherein the conference projector and the demonstration computer are respectively connected with the video conference terminal by virtue of a 5.8G wireless audio/video transceiver; the Bluetooth speaker is connected with the video conference terminal by virtue of a Bluetooth transmitter; and the WIFI wireless microphone is connected with the video conference terminal, and the far-end micro control unit is connected with the video conference terminal via a 5.8G relay and a WIFI-5.8G network bridge sequentially. After the terminal for the video conference system is subjected to initialized setting for the first time, no personnel intervention can be realized in a later-period using process, and wireless connection and transmission is completed in a fully-automatic integrated way, so that a video conference system can be rapidly and stably formed, and comprehensive office efficiency is improved.

The invention discloses an indium seal method for tight connection between a laser crystal and a red copper heat sink. The method comprises the steps that 1, oxidation layers on the surfaces of indium foil and the red copper heat sink are cleaned away; 2, the side face of the laser crystal is wrapped by the indium foil and then placed into a groove in the red copper heat sink; 3, the red copper heat sink is placed into a heating furnace, and the heating furnace is vacuumized; 4, the heating furnace is heated to be at the temperature ranging from 160 DEG C to 170 DEG C, the heating time is controlled to range from 1 h to 2 h, and the molten indium foil is used for welding the laser crystal to the red copper heat sink; 5, the heating furnace is closed, and the red copper heat sink is taken out after being cooled. According to the indium seal method, the laser crystal and the red copper heat sink are tightly connected in a seamless mode through the indium foil welding technology, the radiating efficiency of a whole laser radiating device is greatly improved, and the problem that the radiating efficiency is affected due to the fact that a traditional indium foil wrapping way is high in heat resistance is solved to a certain degree.

The invention discloses a visible waterproof dressing which is of a four-layer structure. The visible waterproof dressing sequentially comprises a backing, an absorbing layer, a wound contact layer and a release layer from top to bottom. The backing is a PE or PET covered transparent PU film, wherein the PU film is coated with a low-sensitivity acrylate adhesive; the absorbing layer is hollowed polyurethane foams or polyvinyl alcohol foams and is located in the middle of the face, coated with the adhesive, of the backing, and the area of the absorbing layer is smaller than that of the backing;the wound contact layer is made of a hollow silica gel material and has the same area as the absorbing layer, and the dressing has the same hollow type. The dressing has the good waterproof performance and breathability, and can conveniently check the wound healing condition at any time, the dressing and the wound are not likely to be adhered, and repeated wound tearing is avoided.

The invention relates to cold gap-filling glue for road maintenance, which is characterized by comprising the following components in parts by weight: 80-120 parts of modified asphalt, 15-35 parts of paint thinner, 30-50 parts of chloroprene and 20-40 parts of siritch. The cold gap-filling glue for road maintenance can be directly used without being heated in low-temperature environment, still has good ductibility, wearing resistance, shock resistance and crack resistance at low temperature, has good heat resistance, anti-melting viscous-flow performance, ageing resistance, and the like at high temperature and has optimal adhesivity with an asphalt mixing material in a gap for effectively repairing in a long period. The cold gap-filling glue for road maintenance does not need to be heated, has safe operation, convenient maintenance and no environmental pollution and can be directly and deeply penetrated into a roadbed. Compared with hot gap-filling glue, the road maintenance cold gap-filling glue saves 20-50 percent and saves materials very much.

The invention discloses a steel plate-concrete composite shear wall and a connecting structure thereof and a construction method thereof. The steel plate-concrete composite shear wall comprises a wallbody and edge members; the wall body comprises two side templates and a steel reinforcement framework positioned between the two side templates; the steel reinforcement framework comprises horizontally distributed ribs, vertically distributed ribs and web members; the edge members are of tubular structures with one open sides; a plurality of batten plates are arranged in the edge members; two edge members are arranged and positioned between the two side templates; the two ends of the horizontally distributed ribs of the steel reinforcement framework correspondingly extend into the edge members from the gaps between the two adjacent batten plates of the adjacent edge members; the wall body and the edge members integrally form a combined wall column; and the combined wall column is filled with concrete. According to the steel plate-concrete composite shear wall, an assembled steel plate-concrete composite shear wall is mainly precast in the factory, and therefore, the wall body structure is simple, the force transmission is obvious, the assembled steel plate-concrete composite shear wall can be suitable for shear wall structural systems, frame-shear wall structural systems, and theapplication prospect is good.

The invention relates to the field of tail gas detection, in particular to a motor vehicle tail gas detection device. It includes walking parts, exhaust gas collection parts, exhaust gas detection parts, display parts and an adjustment platform for adjusting the position of the exhaust gas collection parts. The exhaust gas collection parts are connected with the exhaust gas detection parts. The detection part is connected with the display part, the adjustment platform is arranged between the exhaust gas collection part and the running part, and the adjustment platform is respectively connected with the exhaust gas collection part and the running part. Move the whole device to the designated detection position through the walking parts, adjust the adjustment platform so that the position of the exhaust gas collection part is aligned with the exhaust pipe, when the car starts and runs stably, the exhaust gas enters the exhaust gas collection part, the exhaust gas detection part detects the exhaust gas, and Send the detection structure to the display unit, and the inspector can judge whether the exhaust emission of the vehicle meets the standard according to the data on the display unit.

The invention discloses a construction field of waterproof rolls, in particular to a levelling finding first and waterproof layer making later construction method for cement mortar pasted with BAC waterproof roll. The construction process of the levelling finding first and waterproof layer making later construction method for cement mortar pasted with BAC waterproof roll comprises the steps that base layer is processed, cement mortar is smeared for leveling, curing is conducted, cement paste bonding layer is smeared, BCA waterproof roll is paved, an isolating membrane on the lower surface of the BAC waterproof roll is peeled off and dried for 24 to 48 hours, the interface is sealed, processing of the joints is strengthened, and the quality is subjected to acceptance check. Thelevelling finding first and waterproof layer making later construction method for cement mortar pasted with BAC waterproof roll has the beneficial effects that the high-molecular polymer properties of the BAC double-sided self-adhesive waterproof roll are fully exerted, the strong adhesive force can be produced, strength is high, ductility is good, weather resistance is good, the unique self-filling and sealing of punctures with small base layers, cracks and other damages are achieved, the problem of underground engineering leakage can be effectively avoided, the effect is remarkable, and adaptability is exceptionally high.

The invention provides a heat treatment method for a metal expansion bush, and belongs to the field of heat treatment. The heat treatment method comprises: carrying out quenching and high temperaturetempering on a metal expansion bush, and carrying out oil cooling on the tempered metal expansion bush. With the method of the present invention, the good ductility of the expansion bush can be ensured, the drilling time is shortened to 16 min from 40 min compared to the drilling time in the annealing state so as to substantially improve the drilling efficiency, and during the turning processing of the work-piece, the cutting chips are easy to bend and break, such that the production efficiency and the surface finish of the work-piece are improved, and the wear on the cutter is reduced.

The invention discloses a preparation method of low-resistance and easy-to-shape non-woven fabrics for medical masks. The preparation method comprises the following steps that S1, polylactic cid, succinylation chitosan/graphene oxide composite materials, polyimide, bamboo charcoal fibers are correspondingly weighed and taken for sufficient mixing to obtain a material I; S2, the material I is subjected to extrusion granulation to obtain a material II; S3, the material II is dried, then heating, melting, extruding, stretching, cooling and bonding are carried out through a screw extruder to formthe non-woven fabrics; S4, antistatic agent is sprayed, drying is carried out to obtain the low-resistance and easy-to-shape non-woven fabrics. According to the preparation method of the low-resistance and easy-to-shape non-woven fabrics for the medical masks, the polyimide, the polylactic acid, the succinylation chitosan/graphene oxide composite materials and the bamboo charcoal fibers are used for compound, the obtained non-woven fabrics have the characteristics of large specific surface area and good ductility, and the purpose of high antibacterial property, high filtration efficiency and low resistance can be achieved; and meanwhile, the mildewproof action can be achieved, and the preparation method can be used for preparing the medical masks.