223 results about "Polyimide membrane" patented technology

The invention discloses a process for synthesizing ammonia by coupling low-temperature plasma with electro-catalysis in the field of clean energy and green chemical industry, which comprises the following specific steps: mixing air and water vapor, feeding the mixture into a dielectric barrier discharge reactor, filling the reactor with a multi-stage heterojunction gradient doped carbon coated catalyst, generating active gas containing NOx under pulse high voltage, and condensing and then entering an electrocatalytic reduction unit. And an electro-catalysis product enters a photo-thermal separation module integrated with a Janus type photo-thermal electrode, the temperature of the electrode is locally increased under visible light irradiation, NH3 desorption is promoted, and finally high-purity ammonia is obtained through polyimide membrane separation. The multistage heterojunction gradient-doped carbon-coated catalyst adopted in the process is prepared through multiple steps and contains gradient-doped boron, sulfur and Au nanoparticles on the surface, NOx adsorption, electron transport and sintering resistance are synergistically improved, and efficient ammonia synthesis under mild conditions is achieved.

The invention discloses a high-temperature-resistant, bending-resistant and high-flexibility polyimide film for flexible display and a preparation method of the high-temperature-resistant, bending-resistant and high-flexibility polyimide film. According to the polyimide film, by introducing the nano silicon dioxide particles and constructing the porous structure design, the problems that a traditional polyimide film is insufficient in stability in a high-temperature environment, cracks are likely to be generated after bending, and the flexibility is poor are effectively solved. The polyimide film disclosed by the invention is prepared by adopting a diamine monomer and a dianhydride monomer as main raw materials, adding nano silicon dioxide particles, and carrying out solution polymerization, gelation, pore regulation and control and thermal imidization processes. The obtained polyimide film has a micron-sized porous structure, keeps stable at a high temperature of 400 DEG C, does not generate cracks after being bent for 100,000 times, has tensile strength of more than or equal to 150MPa, elongation at break of more than or equal to 25% and light transmittance of more than or equal to 85%, and is suitable for a substrate material of a flexible display device.

The invention discloses a preparation method of a proton exchange membrane water electrolysis hydrogen production membrane electrode, and belongs to the technical field of proton exchange membranes, a catalyst carrier is prepared, S101, a polyimide membrane is inversely fixed in a magnetron sputtering vacuum coating chamber, a cavity cover of the magnetron sputtering vacuum coating chamber is closed, vacuumizing is performed, and a substrate is heated; and S102, argon is introduced into a cavity of the magnetron sputtering vacuum coating chamber, coating is started, the power of the bismuth metal target is set to be 0.2-0.5 kW, and the deposition time is 60-1800 s. In the invention, the physical vapor deposition method is utilized to load the catalyst on the surface of the metal oxide carrier with high specific surface area and ordered nanostructure, so that the exposure of active sites of the catalyst is increased, the dosage of the noble metal catalyst is reduced, and the bonding strength between the catalyst and the carrier is enhanced; the catalyst is not easy to separate from the surface of the carrier, and large-scale slurry agglomeration is avoided.

The invention discloses a composite diaphragm, a preparation method thereof and a lithium ion battery. The composite diaphragm comprises a base membrane and a composite functional layer arranged on one side of the base membrane, and the composite functional layer is formed by compounding an independent high-temperature-resistant polymer porous membrane and a polytetrafluoroethylene porous membrane. Preferably, the high-temperature-resistant polymer porous membrane comprises one or more of an aramid fiber membrane and a polyimide membrane. By compounding the high-temperature-resistant polymer porous membrane and the polytetrafluoroethylene porous membrane, the overall thinning of the diaphragm is realized on the premise of ensuring excellent mechanical strength and thermal stability, and the ion migration impedance is effectively reduced, so that the rate capability, the cycle life and the safety performance of the lithium ion battery are remarkably improved.

The disclosure describes a device, method, and transfer apparatus for stamping thermoplastic composite blanks. The blanks may consist of laminated fibrous plies which may comprise continuous fibers in a thermoplastic polymer matrix. Supporting unidirectional fibers or holding tapes, pre-impregnated with polymer and extending beyond a shaping area's edges may be clamped in jaws, allowing the blank to be suspended and heated without sagging. The transfer system moves the blank between a heating station and a stamping station, where a punch and die may shape it while maintaining calibrated tension to reduce defects such as creasing or delamination. Advanced jaw mechanisms, including pivoting jaws with multiple clamping slots, enable differential tensioning of plies for precise forming of complex geometries. After stamping, excess fiber extensions may be trimmed and may be recycled. This approach eliminates the need for nonrecyclable polyimide films and improves process reliability for thick or heavy blanks.

The application discloses a preparation method and application of fluorine-containing cross-linkable polyimide-based carbon molecular sieve membrane and belongs to the technical field of gas separation membranes. 4,4'-(hexafluoroisopropyl) diphthalic anhydride is used as a dianhydride monomer, 3,5'-diaminobenzoic acid and 4,4'-diamino diphenyl ether are used as common diamine monomers to copolymerize a polyamide acid solution; the polyamide acid solution is prepared into a casting solution, and after standing and defoaming, a polyamide acid membrane is prepared by using a coating method, and the polyamide acid membrane is imidized to prepare a polyimide membrane; the polyimide membrane is used as a polymer precursor membrane of the carbon molecular sieve membrane, is placed in a programmed temperature carbonization furnace with a protective atmosphere and is high-temperature baked to obtain the fluorine-containing cross-linkable polyimide-based carbon molecular sieve membrane. The carbon molecular sieve membrane is not only easy to prepare but also excellent in anti-aging capacity; the carbon molecular sieve membrane is used for CO2 / N2 and CO2 / CH4 separation, and has a high CO2 permeation coefficient and CO2 / N2 and CO2 / CH4 separation factors.

The preparation method comprises the following steps: firstly, synthesizing polyamide acid by adopting a monomer polymerization strategy, pouring the polyamide acid onto a glass plate, casting to form a film, demolding with deionized water, washing and drying to successfully prepare the colorless transparent polyimide film. Secondly, colorless transparent polyimide films with different proportions are prepared by regulating and controlling the monomer proportion, and the physical and chemical properties are analyzed. A novel molecular main chain is constructed by utilizing different groups of different monomers, the colorless transparent polyimide film is prepared, and the colorless transparent polyimide film has excellent optical performance, thermal performance, mechanical performance and the like, can be used on a flexible organic light-emitting diode substrate, is crucial to the development of a flexible display technology, and has wide application prospects. And meanwhile, the method has far-reaching significance on development of portable electronic products such as wearable equipment and smart phones in the future.

The invention belongs to the field of lithium ion batteries, and particularly relates to a semi-solid lithium battery diaphragm and a preparation method thereof.The semi-solid lithium battery diaphragm comprises a base membrane and gradient functional coatings coated on the two sides of the base membrane, the base membrane is a polyimide membrane, and each gradient functional coating comprises a bonding layer on the bottom layer, a regulating layer on the surface layer and a filling layer located between the bonding layer and the regulating layer; the bonding layer comprises a component A, and the component A comprises a polymer matrix, a disulfide bond-containing cross-linking agent, a coupling agent and a first solvent; the polymer matrix comprises polyimide and polyurethane; the filling layer comprises a component B and a component A, and the component B comprises core-shell particles and a dispersing agent, wherein the core-shell particles are formed by coating Li1. 3Al0. 3Ti1. 7 (PO4) 3 particles with ZrO2; the regulation and control layer comprises perfluorinated sulfonic acid resin, a plasticizer, an interface stabilizer, a second solvent and deionized water. Through the synergistic effect of all the layers in the gradient functional coating, the self-repairing performance of a damaged interface of the diaphragm can be achieved, and the strength of the diaphragm is improved.

The disclosure describes a device, method, and transfer apparatus for stamping thermoplastic composite blanks. The blanks may consist of laminated fibrous plies which may comprise continuous fibers in a thermoplastic polymer matrix. Supporting unidirectional fibers or holding tapes, pre-impregnated with polymer and extending beyond a shaping area's edges may be clamped in jaws, allowing the blank to be suspended and heated without sagging. The transfer system moves the blank between a heating station and a stamping station, where a punch and die may shape it while maintaining calibrated tension to reduce defects such as creasing or delamination. Advanced jaw mechanisms, including pivoting jaws with multiple clamping slots, enable differential tensioning of plies for precise forming of complex geometries. After stamping, excess fiber extensions may be trimmed and may be recycled. This approach eliminates the need for nonrecyclable polyimide films and improves process reliability for thick or heavy blanks.

The invention discloses an amino-modified titanium-based MOF composite material and a preparation method thereof, and belongs to the technical field of sewage treatment.The preparation method comprises the steps that graphene aerogel powder serves as a carrier, titanium-based MOF containing a Ti-O-Mn heterostructure is loaded on the surface, then dopamine polymerization is conducted to obtain amino-modified titanium-based MOF powder, the amino-modified titanium-based MOF powder serves as a cross-linking site, and the amino-modified titanium-based MOF composite material is obtained. The surface of the amino-modified titanium-based MOF powder is coated with polyimide with a three-dimensional network structure, and the polyimide has a good removal rate on heavy metals in the aspect of sewage degradation and has excellent stability and recoverability; by constructing a three-dimensional network structure, the specific surface area of the polyimide film is increased, the synergistic effect of the polyimide film and titanium-based MOF is improved, polyimide is an organic high-molecular polymer and has high chemical inertness and a stable aromatic heterocyclic structure unit, amino is fixed through high crosslinking density, and the stability of the amino is improved.

The application discloses a super-thin polyimide film preparation process and a super-thin polyimide film current collector, relates to the field of polyimide film post-processing, and discloses the super-thin polyimide film preparation process, wherein a polyimide film with a thickness of 8-12 mu m is thinned to a polyimide film with a thickness of 3-6 mu m through alkali immersion; the polyimide film uniformly passes through an alkali tank; the moving speed of the polyimide film is 0.01-1 m / min; the alkali is NaOH solution and KOH solution; the mass concentration of the alkali is 3-10%; and the temperature of the alkali is 25-50 DEG C. The polyimide film with a thickness of 3-6 mu m is formed after acid pickling, water washing and drying; the acid pickling adopts hydrochloric acid with a concentration of 1-4%; and the alkali with a certain concentration can uniformly etch the surface of the polyimide film, so that the thickness of the polyimide film is thinned from 8-12 mu m to 3-6 mu m, the super-thin polyimide film is prepared, the super-thin polyimide film is used as a carrier of the super-thin current collector for preparing new energy batteries, and the super-thin current collector has high strength and stability.

The present invention provides a polyimide film and a manufacturing method therefor, wherein in the dimension change measurement by a thermomechanical analyzer (TMA) that performs a temperature rise procedure from 25° C. to 400° C. after storage for 48 hours at a humidity of 50% RH, the temperature-rise thermal expansion coefficient (50 to 200° C.) in the TD direction is −1.5 ppm / ° C. to 6 ppm / ° C., the temperature-rise thermal expansion coefficient (50 to 200° C.) being the slope of a straight line connecting a dimensional measurement value in the TD direction of the polyimide film as measured at 200° C. in the first run during the temperature rise procedure and a dimensional measurement value in the TD direction of the polyimide film as measured at 50° C. in the first run during the temperature rise procedure, and the dimensional measurement values in the TD direction correspond to dimensional change values calculated by converting, into 1 m, the length of a sample of the polyimide film used in the measurement by the thermomechanical analyzer.

The application relates to the technical field of gas filtering materials, in particular to a polyimide film composite material and a preparation method and application thereof, the composite material is mainly made of polyimide and Zn / g-C3N4, Zn / g-C3N4 accounts for 10-20 wt% of the mass of the polyimide; the preparation method is that the polyimide is stirred in a solvent to obtain a polyimide casting solution, then Zn / g-C3N4 is poured into the polyimide casting solution, stirring is carried out at 60-80 DEG C for 8-12 h, cooling is carried out to room temperature for 1-4 h, the defoaming casting solution is poured on a glass plate, a film with a thickness of 50-80 mu m is scraped out by using a coating machine, the scraped film is dried under vacuum at 100-120 DEG C for 8-12 h, peeling is carried out, annealing is carried out at 200-230 DEG C for 8-12 h, the obtained Zn / g-C3N4 composite polyimide film is placed in a plasma reactor for plasma treatment, and the polyimide film composite material is obtained. The polyimide film composite material can be used for efficient purification of helium, high selectivity is achieved while high flux is met, and high stability is also achieved.

The present application relates to the field of polyimide film, provide a kind of thermoplastic polyimide film steel plate preparation method and device, including the following steps;Provide steel foil, and prepare polyamide acid solution;Coated with a layer of polyamide acid solution on the rough surface of steel foil;The steel foil coated with polyamide acid solution obtained is placed on the rack in the furnace body and baked, and the steel foil covered with polyamide acid film is obtained;The steel foil covered with polyamide acid film obtained is subjected to thermal imidization, and the polyimide film steel plate is obtained.By being provided with the rack of metal material in the furnace body, the rack divides the furnace body into two heating cavities, and the two heating cavities are communicated through gap, and the heating pipe in lower chamber is heated towards the polyamide acid film on one side of copper foil, and the other side of polyamide acid film is not placed heating pipe, so that the heat in lower heating cavity is conducted to upper chamber through gap, and the other side of polyamide acid film is heated, and the heating efficiency is improved.

The utility model discloses a flexible circuit board adopting aluminum as a conducting circuit, and relates to the technical field of flexible circuit boards. Comprising an aluminum foil layer which forms a conduction circuit through an etching process and plays a role in electrical conduction; the bottom polyimide film is located at the bottom layer of the flexible circuit board and plays a role in insulation and welding resistance; the bottom layer epoxy resin glue covers the bottom layer polyimide film and is used for bonding the bottom layer polyimide film and the aluminum foil layer; the top polyimide film is located on the top layer of the flexible circuit board and plays a role in insulation and welding resistance; and the top epoxy resin adhesive covers the lower surface of the top polyimide film and is used for bonding the top polyimide film and the aluminum foil layer. On the basis of a conventional flexible circuit board processing technology, aluminum is used for replacing copper to serve as a conducting circuit. According to the circuit board, the cost and the weight are remarkably reduced while the good conductive performance is guaranteed, and the circuit board has good corrosion resistance and is suitable for various severe environments.

The present application relates to a kind of preparation methods of peelable polyimide laminated film, which is made of multiple polyimide composite films by hot pressing forming, wherein the polyimide composite film is composed of polyimide film and adhesive, by controlling the thickness of adhesive layer, forming temperature, forming pressure and holding time, the peel strength of laminated film is controlled, and the peel strength controllable polyimide laminated film is obtained.Compared with the prior art, the present application effectively controls the peel strength of laminated film, and obtains a peelable polyimide laminated film with controllable peel strength.The method can control the peel strength of laminated film according to the use requirement, is easy to process and use, has low requirement for equipment, is easy to implement, and can be used for preparing peelable gasket.

The application provides a conical double-clad fiber probe integrated with photoacoustic excitation and detection, which integrates pump light excitation and detection light sensing through a conical double-clad fiber, integrates functions such as photoacoustic excitation, gas-light interaction and interference detection in a micro probe, effectively simplifies the device structure, reduces the volume, and significantly improves the integration and compactness. At the same time, the conical part of the conical double-clad fiber can realize lateral diffusion of pump light, so that it can fully act on the measured gas in the closed gas chamber without additional configuration of optical components such as mirrors, and the problem of weak photoacoustic signal in a small space is improved. In addition, the application uses a fiber Fabry-Perot interference structure to complete vibration detection with a polyimide diaphragm, replacing the traditional electronic detector, having excellent anti-electromagnetic interference capability, and can accurately identify weak vibration signals, effectively improving the sensitivity and operation stability of gas detection.

Disclosed are: a polyimide film for producing a graphite sheet, the polyimide film containing a phosphorus compound having at least one alkyl group having 1-6 carbon atoms (inclusive); and a graphite sheet produced from the polyimide film.

The present invention addresses the problem of reducing the coefficient of thermal expansion of a polyimide film having a high coefficient of thermal expansion. This film contains a polyimide and an oxide containing a boron element. In addition, the boron-containing oxide is preferably obtained from boric acid and an alumina sol. Further, the film preferably has a coefficient of thermal expansion of 50 ppm / DEG C or less. Further, the film preferably exhibits a light transmittance of 74% or more at a wavelength of 420 nm. Further, the film preferably shows a yellowness (YI) of 6.0 or less. Further, it is preferable that the film exhibit a thermal conductivity in the range of 0.231 W / mK or more and 0.275 W / mK or less.

The invention discloses a diaphragm, a secondary battery and an electric device, and belongs to the technical field of batteries, the diaphragm comprises a polyimide film, the polyimide film contains a modified element, the modified element comprises an S element, and at least part of the S element exists in the form of-S-S-. The polyimide film comprises an S element, at least part of the S element exists in the form of-S-S-(disulfide bond), when the battery is short-circuited or locally overheated to cause the temperature of the diaphragm to be higher than or equal to 120 DEG C, the disulfide bond is broken by short circuit or high temperature to form free sulfur atoms and sulfydryl, and after the temperature is reduced to about 80 DEG C, the sulfur atom and sulfydryl are separated from each other. Sulfur atoms are recombined into disulfide bonds through diffusion to repair cracks or defects, and the disulfide bonds can trigger a fracture-recombination process through heat or an electric field to drive a macromolecular chain to slide and crosslink, so that the cracks are repaired, the thermal stability of the diaphragm is effectively improved, the thermal shrinkage of the diaphragm is reduced, and the cycling stability of the secondary battery is effectively improved.

The objective of the present invention is to lower a coefficient of thermal expansion of a polyimide film having a relatively high coefficient of thermal expansion. The film according to the present invention contains a polyimide and an oxide containing a boron element. The oxide containing the boron element is preferably obtained from a boric acid and alumina sol. Furthermore, the film preferably has a coefficient of thermal expansion of 50 ppm / °C or less. Furthermore, the film preferably exhibits a light transmittance of 74 % or more at wavelengths of 420nm. In addition, the film preferably exhibits a yellowness index (YI) of 6.0 or less. Furthermore, the film preferably exhibits a thermal conductivity in the range 0.231 W / mK or more and 0.275 W / mK or less.

The utility model provides a double-sided coated colored polyimide sintered film, which relates to the technical field of polyimide films and comprises a polyimide film main body, a waterproof layer is sprayed on the periphery of the polyimide film main body, colored sintered layers are symmetrically arranged on the periphery of the waterproof layer, adhesive layers are symmetrically sprayed on the peripheries of the colored sintered layers, and the adhesive layers are coated on the periphery of the polyimide film main body. The periphery of the adhesive layer is coated with the protective layer, the waterproof and damp-proof effects of the polyimide film body can be improved through the waterproof layer, the adhesive layer and the protective layer, performance reduction of the polyimide film body caused by damp is prevented, the protective layer can provide double choices of a bright surface and a matte surface for a user, and practicability is effectively improved.

The invention relates to the technical field of light guide plate manufacturing, and discloses a composite light guide plate, a preparation method thereof and a backlight module. The method comprises the following steps: providing a light guide plate mold with a variable-diameter micropore array, carrying out variable-pressure molding on a preset formula mixture to obtain a porous gradient matrix, imprinting the porous gradient matrix coated with the light curing agent based on a flexible prism array mold; a nested grating structure with direction selectivity is further formed through laser and plasma synergistic etching, an optical active layer and magnetron sputtering are sequentially formed on a nested grating base body, an optical active layer with the light-emitting regulation and wavelength conversion capacity is constructed, and through plasma activation and hot pressing, the light-emitting wavelength conversion structure with the light-emitting regulation and wavelength conversion capacity is obtained. The fluorinated polyimide film is combined with the tuning substrate, so that the overall structural strength of the composite light guide plate is enhanced, the multifunctional composite light guide plate with high interface bonding strength is formed, and the problems of interface delamination and stress concentration easily occurring in a multi-layer light guide structure are effectively solved.

The invention relates to the technical field of precision printing, and discloses a composite screen printing plate based on a double-layer polyimide film, which comprises a precision printing layer, a printing layer, a printing layer and a printing layer, the supporting ink penetrating layer is composed of a second polyimide film and is compounded with the precise printing layer through a middle bonding layer; and the composite reinforced substrate layer is polymer screen cloth and is fixedly connected with the back surface of the supporting ink-permeable layer through a hot melt adhesive layer. According to the invention, the expensive stainless steel wire mesh or steel sheet is replaced by the cheap polyester mesh and the high-molecular adhesive; the material cost is reduced, the preparation process is simplified, and the manufacturing cost and the energy consumption are further reduced; the whole screen functional structure is composed of the polyimide film and the polymer glue layer, and the thermal expansion coefficients of all layers of materials are similar, so that the inherent thermal mismatch problem of a traditional metal-PI composite structure is solved; under the environment of temperature change, all the layers cooperatively deform, and pattern micro-deformation and alignment deviation caused by internal stress are effectively eliminated.

The application discloses a preparation method of a crosslinked sulfonated polyimide film, and comprises the following steps: synthesizing 3,5-bis(4-aminophenoxy)benzoic acid through nucleophilic substitution and reduction reaction; synthesizing 4,4'-(1,1'-bis(4-aminophenoxy))octafluorobiphenyl through nucleophilic substitution and reduction reaction; taking 3,5-bis(4-aminophenoxy)benzoic acid and 4,4'-(1,1'-bis(4-aminophenoxy))octafluorobiphenyl as raw materials, and preparing a sulfonated polyimide polymer containing carboxyl groups through high-temperature polycondensation reaction; dissolving the sulfonated polyimide polymer containing carboxyl groups in an organic solvent, and adding polyvinyl alcohol and 4-dimethylaminopyridine to react; after the reaction is completed, casting into a film, and after washing and acidification, the crosslinked sulfonated polyimide film is obtained. The crosslinked sulfonated polyimide film prepared by the method has good performance, and has a good application prospect in a vanadium redox flow battery.

The invention relates to a polyimide-polyoxyethylene blended hollow fiber membrane and a preparation method thereof, and belongs to the technical field of separation membranes, the polyimide-polyoxyethylene blended hollow fiber membrane is prepared by blending polyimide and polyoxyethylene, and the mass ratio of polyimide to polyoxyethylene is 80: 20-90: 10; the membrane material is applied to flue gas decarburization and can stably run for a long time under the flue gas working condition, the CO2 permeability is improved by 30% or above compared with a pure polyimide membrane, the CO2 / N2 selectivity is maintained to be 50 or above, polyimide and polyoxyethylene are subjected to blending modification, and the prepared hollow fiber membrane has high selectivity, high breathability and good stability.

The application discloses a preparation method of super-high thermal conductive graphite film, which comprises the following steps: S1, polyimide film is placed in a high-temperature furnace for pre-carbonization to obtain a carbonized film; S2, the pre-carbonized film is subjected to temperature rising and falling cycle treatment under inert gas protection, and then is subjected to carbonization treatment, and is naturally cooled to room temperature to obtain a carbonized film; S3, graphene oxide nanosheet and hexagonal boron nitride nanosheet dispersion liquid are sprayed on the surface of the carbonized film, and the carbonized film is dried to obtain a carbonized film sprayed with graphene oxide nanosheet and hexagonal boron nitride nanosheet; S4, the carbonized film sprayed with graphene oxide nanosheet and hexagonal boron nitride nanosheet is subjected to gradient temperature rising graphitization treatment under inert gas protection, and is cooled to obtain a carbon foam film; and S5, the carbon foam film is subjected to calendering by a calendering machine to obtain the super-high thermal conductive graphite film. The whole process scheme improves the thermophysical properties of the graphite film, is suitable for continuous industrial production, and improves the product stability and reliability.

The utility model discloses a high-temperature oil well heating cable woven by copper-rolled steel wires, and belongs to the technical field of cables. The high-temperature oil well heating cable woven by the copper corrugated steel wires comprises at least one group of battery cells and further comprises an insulating layer fixedly arranged on the outer walls of the battery cells, and a fireproof layer fixedly arranged on the outer wall of the insulating layer; the battery cell is fixedly arranged in the metal sheath through the filling layer; according to the utility model, the polyimide film and the fire-resistant mica tape are sequentially and fixedly arranged on the outer wall of the battery cell, so that the safety and the reliability in use can be improved, and the metal sheath is fixedly arranged on the outer wall of the cable, so that the heat-conducting property can be improved, the heat dissipation efficiency of the heating cable can be improved, and the aging phenomenon can be reduced; the cable is protected from physical damage and friction and can bear large pressure, and the using effect is improved.

The invention discloses a humidity-driven soft actuator and a preparation method thereof, the actuator takes a patterned black polyimide (PI) film as a substrate, and the substrate is compounded with two-dimensional transition metal carbide Ti3C2Tx (MXene) / amylopectin amp; a functional layer is formed by Amylose / carbon nanotubes (CNTs), when the functional layer absorbs moisture and expands, the actuator is bent towards the PI side, and when the functional layer is dehumidified and contracts, the actuator is bent reversely; the bending response direction is defined through the substrate gap direction of nanosecond laser machining, and the initial curvature and the bending degree are regulated and controlled through vacuum hot pressing treatment. The components cooperate to endow the actuator with rapid humidity response capability and excellent mechanical stability. The technical problems that an existing humidity driving actuator is poor in programmability and an interface is prone to stripping are solved, an external driving source is not needed, the technology is simple, convenient and controllable, and the potential application value in the fields of soft robots, flexible intelligent equipment and the like is shown.