44 results about "Copper phthalocyanine" patented technology

The invention belongs to the technical field of battery positive electrode materials, and particularly discloses an iodine positive electrode material and a preparation method and application thereof.According to the iodine positive electrode material, by means of the combined action of copper phthalocyanine and a carbon material, the stabilization effect on I < + > can be enhanced, and therefore the two-step oxidation-reduction reaction (I <->-I < 5 >-I < + >) is achieved. When the iodine positive electrode material is used as a positive electrode of a zinc ion battery, the iodine positive electrode material has relatively high specific capacity and energy density and excellent cycling stability and rate capability. In addition, the method for preparing the iodine positive electrode material is short in process, easy to operate and convenient for large-scale popularization and application, and has excellent social and economic potential.

The invention discloses an antibacterial toxin-removing anhydrous dyeing and finishing powder dye as well as a preparation method and application thereof. The dye adopts a porphyrin structure-containing metal organic framework with a specific aperture as a carrier, copper phthalocyanine and an IR808 photosensitizer are loaded after modification of a silane coupling agent, and copper and zinc ions are introduced through ion exchange. By optimizing a carrier structure, surface modification and a component ratio, the dye has excellent antibacterial property, high dyeing depth and a photocatalytic function. Anhydrous dyeing and finishing are realized by adopting a supercritical carbon dioxide process, and the process is environment-friendly and efficient. The technology solves the problems of serious pollution, single function and the like of the traditional dyeing process, and has important application value in the field of textile dyeing and finishing.

The invention discloses low-paper-scraping ink and a preparation method thereof. The low-paper-scraping ink comprises the following raw material components in percentage by mass: 3.7-3.9% of a quantum lubricant; 4.0%-4.7% of a pressure rheological agent; 1.6%-2.0% of a coupling curing agent; 88.9% to 89.6% of a solvent; 0.3%-0.4% of a dispersion stabilizer; 0.2%-0.3% of a pH regulator; 0.1%-0.2% of a preservative; the invention relates to the technical field of ink. According to the ink for the low-scrape paper and the preparation method thereof, nitrogen-doped graphene is used for constructing an ultralow friction interface, reducing the friction coefficient and improving the writing comfort, and meanwhile, the nitrogen-doped graphene is matched with the krill protein derivative to form a biological lubricating layer with a self-repairing function, so that paper fiber damage in the high-speed writing process is effectively avoided; the pressure response index is increased through hydrogen bond reinforced polyacrylamide, support is provided for effective covering of a lubricating layer after multiple times of writing, photo-thermal synergistic efficient curing is achieved in cooperation with copper phthalocyanine polylactic acid composite particles, the weather resistance is improved, and meanwhile the paper scraping rate is smaller than 0.3%.

This invention provides a method for preparing a long-cycle-life composite sodium iron pyrophosphate cathode material, comprising: adding perfluorophthalocyanine copper during a co-precipitation reaction to prepare a copper-doped composite sodium iron pyrophosphate precursor; dispersing the copper-doped composite sodium iron pyrophosphate precursor in a perfluorophthalocyanine copper solution, performing solid-liquid separation, vacuum drying, and pre-calcining to obtain a primary doped precursor; mixing a sodium source, a carbon source, and the primary doped precursor, milling the resulting slurry, and then spray drying to obtain a doped and modified precursor; and sintering the doped and modified precursor to obtain the long-cycle-life composite sodium iron pyrophosphate cathode material. This invention achieves doping and interface modification through perfluorophthalocyanine copper, simultaneously realizing a carbon-coated stable structure to improve the electronic and ionic conductivity of the material, significantly enhancing specific capacity, rate performance, and cycle stability.

The present application relates to copper phthalocyanine wastewater treatment technical field, disclose a kind of copper phthalocyanine wastewater multistage treatment device, including for wastewater sequentially treatment, the filter pool of filtering impurities, the multi-effect treatment pool of stripping and flocculation treatment and the sedimentation tank of standing sedimentation;It also includes: discharge pipe and waste pipe, install in the middle position of the bottom of the multi-effect treatment pool, and multi-effect treatment pool inside is fixed with guide pump assembly by support, guide pump assembly and discharge pipe form a continuous system of liquid discharge;Rotary connecting piece, rotary installation is in the middle upper portion of the multi-effect treatment pool by support, and rotary connecting piece is connected with aeration treatment net in the form of through, and aeration treatment net is realized stripping exhaust and flocculation replacement by gas pressure and hydraulic pressure respectively.This copper phthalocyanine wastewater multistage treatment device, using filtration, stripping and flocculation precipitation and other treatment processes, realize the efficient purification treatment of wastewater, while in purification treatment, efficiency is high, treatment is comprehensive, and it is not easy to cause the residue of impurities and harmful substances.

The application discloses an antibacterial and detoxification anhydrous dyeing and finishing powder dye and a preparation method and application thereof. The dye uses a metal organic framework containing a porphyrin structure with a specific pore size as a carrier, loads copper phthalocyanine and an IR808 photosensitizer after modification by a silane coupling agent, and introduces copper and zinc ions through ion exchange. By optimizing the carrier structure, surface modification and component ratio, the dye has excellent antibacterial property, high dyeing depth and photocatalytic function. The supercritical carbon dioxide process is used to realize anhydrous dyeing and finishing, and the process is environmentally friendly and efficient. The technology solves the problems of traditional dyeing processes, such as serious pollution and single function, and has important application value in the field of textile dyeing and finishing.

The application discloses a kind of self phthalocyanine copper catalytic textile wastewater efficient treatment and recovery method, belong to textile wastewater treatment technical field.The application utilizes existing phthalocyanine copper in wastewater in-situ activation oxidant, generates with mild oxidation potential and high selectivity singlet oxygen, can realize the broad-spectrum efficient degradation decolorization efficiency of various synthetic dyes at normal temperature and pressure;And avoid the damage of free radical to phthalocyanine copper structure, so that phthalocyanine copper maintains structure stability in the reaction process, and high-purity recovery can be realized by simple filtration and other physical means;In addition, the application does not need additional complex catalyst preparation and functional modification, system reaction is mild, and the treatment process is green and environmentally friendly, easy for engineering implementation and amplification;As described above, the application not only improves the environmental performance and economic benefits of dye wastewater treatment, but also provides a theoretical basis and technical support for industrial pigment / dye wastewater resource treatment, with wide application prospect and industrial popularization value.

The present invention provides a carbon dispersion liquid that is useful as a material for forming conductive coating films, which has low viscosity even when containing high concentrations of conductive carbon black, in which the conductive carbon black is finely dispersed in an organic solvent in a good state, and in which the good dispersion state can be maintained over a long period of time. [Solution] This is a carbon dispersion liquid used to form a conductive coating film. It contains conductive carbon black, an organic solvent, a polymeric dispersant, and a phthalocyanine compound, wherein the polymeric dispersant is a polymer having a constituent unit (A) derived from a macromonomer (A) in which a (meth)acryloyloxy group is bonded to one end of a polyalkylene glycol monomethyl ether chain via a urea bond, a constituent unit (B) derived from an aromatic vinyl monomer (B), and a constituent unit (C) derived from a nitrogen-containing monomer (C), and the phthalocyanine compound is sulfonated copper phthalocyanine.

The application discloses a phthalocyanine cobalt / pyridine nitrogen skeleton substituted phthalocyanine copper / asphalt coke active carbon composite catalytic material and a preparation method and application thereof, and the method comprises the following steps: 1, pyridine-2,3-dicarboxylic acid, urea, ammonium molybdate, copper chloride dihydrate and asphalt coke active carbon are mixed to obtain a mixture A; 2, the mixture A is kept at 100-180 DEG C, and then kept at 200-350 DEG C to obtain a product B; 3, the product B is ground, soaked, washed and dried in sequence to obtain pyridine nitrogen skeleton substituted phthalocyanine copper / asphalt coke active carbon; 4, phthalic anhydride, urea, ammonium molybdate, cobalt chloride hexahydrate and pyridine nitrogen skeleton substituted phthalocyanine copper / asphalt coke active carbon are mixed to obtain a mixture C; 5, the mixture C is kept at 100-180 DEG C, and then kept at 200-350 DEG C to obtain a product D; 6, the product D is ground, soaked, washed and dried in sequence to obtain the phthalocyanine cobalt / pyridine nitrogen skeleton substituted phthalocyanine copper / asphalt coke active carbon composite catalytic material, the purity of the material is high, and the discharge time and voltage of a Li / SOCl2 battery are improved.

The invention provides an application of a benzoate compound in a synthesis process of copper phthalocyanine, which comprises the following steps: S1, adding 3g of benzoate compound, 310g of 100% phthalic anhydride, 231g of urea and 1500ml of solvent alkylbenzene into a 3000ml three-neck bottle provided with a stirring device, a thermometer and a condenser, uniformly heating to 170 DEG C within 4 hours while stirring, and keeping the temperature for 2 hours; s2, 231 g of urea is added, the temperature is evenly increased to 190 DEG C within one hour, and heat preservation is conducted for 2 hours; s3, adding 61 g of 100% cuprous chloride and 4 g of 100% ammonium molybdate, uniformly heating to 210 DEG C within 5 hours, carrying out heat preservation and stirring reaction for 6 hours, and cooling to 100 DEG C; according to the application of the benzoate compound in the synthesis process of the copper phthalocyanine, a proper amount of the benzoate compound is added in the synthesis process of the copper phthalocyanine, so that the product yield is increased, the consumption of raw materials is reduced, and the emission of three wastes is reduced, and therefore, the production cost is reduced, and the pollution to the environment is reduced.

The present invention provides a pigment dispersion composition for a black matrix, from which a black matrix having a high surface resistance value can be formed. The pigment dispersion composition for a black matrix includes a black colorant, a sulfonate of copper phthalocyanine, and an amine compound selected from at least one of the following compounds (A) and (B): (A) an amine compound having a carbon atom of secondary or higher within 3 atoms from a nitrogen atom of an amino group; and (B) an amine compound in which an amino group is connected to one or more aromatic rings through a hydrocarbon group having 3 or fewer carbon atoms.

The invention relates to the technical field of polymer dye synthesis, in particular to a copper phthalocyanine coloring monomer, a preparation method thereof, blue polyester and blue polyester fiber. The copper phthalocyanine coloring monomer is selected from compounds represented by the following structural formula: in the formula, R represents C1-C10 alkyl; and each of R1 and R2 independently represents H or a C1-C10 alkyl group. The copper phthalocyanine coloring monomer is high in color fastness and has excellent comprehensive performance such as excellent reaction activity and thermal stability, and a new path is provided for research and development of high-performance coloring fibers.

-C 16 ~C 18 methyl esters of fatty acids, - 0.40kgL -1 a β-type copper phthalocyanine having a bulk density of at least -C 14 ~C 18 Hydrocarbons, - a fatty acid amine salt of sulfonated copper phthalocyanine; An ink composition comprising: C 14 ~C 18 An ink composition is disclosed in which the weight ratio of hydrocarbon to fatty acid amine salt of sulfonated copper phthalocyanine is from 6:1 to 45:1. Methods of making the ink compositions, printing methods, and printed articles are also disclosed.

The invention belongs to the technical field of electrochemical power supplies, and particularly relates to a bipolar organic electrode material and a preparation method and application thereof. The molecular structure of the tetraamino copper phthalocyanine has n-type (C = N) and p-type (-NH2) redox active centers at the same time, and positive ions and negative ions can be reversibly stored. The preparation method comprises the following steps: taking 4-nitrophthalonitrile and copper chloride as raw materials, cyclizing under the action of a catalyst to synthesize copper tetranitro phthalocyanine, and then converting nitro into amino through reduction reaction to obtain a target product. When the copper tetraamino phthalocyanine serving as the bipolar positive electrode material is applied to the aqueous zinc battery, high working voltage (-1.02 V vs. Zn / Zn < 2 + >) and relatively high specific capacity (137 mAh g <-1 >) are shown. In addition, the inherent planar large conjugate structure effectively inhibits dissolution in electrolyte, and endows the battery with excellent rate capability and long cycle stability. The material is simple in synthetic route and relatively low in cost, and has a wide application prospect in high-performance and low-cost aqueous zinc batteries.

The invention relates to the technical field of preparation of electrocatalytic materials, in particular to an oxygen reduction and carbon dioxide reduction electrocatalyst and a preparation method and application thereof. According to the invention, ZIF-8 is taken as a framework, dinonyl carbonyl iron and copper phthalocyanine are respectively taken as metal sources, and a high-temperature calcination method is adopted to prepare the series bifunctional electrocatalyst with ORR and CO2RR. The material has ORR activity equivalent to that of a traditional Fe-N-C material, the oxygen reduction performance of the catalyst in an alkaline medium exceeds that of a Pt-based catalyst, and the material has higher half-wave potential and stability; and the high-selectivity CO2RR activity is also realized. The material is simple in preparation method and wide in application range, has structural universality adapting to reaction scenes, and can be applied to the field of metal-gas batteries.

A black toner has a black toner particle having a binder resin, a hydrocarbon wax, and carbon black, the black toner particle further contains at least one selected from the group consisting of copper phthalocyanine and zinc phthalocyanine, and the binder resin includes a vinyl resin having a specific monomer unit having a linear alkyl group with 8 to 22 carbon atoms.

The invention provides an application of a rosin ester compound in a synthesis process of copper phthalocyanine. The application of the abietate compound in the synthesis process of copper phthalocyanine comprises the following steps: S1, feeding preparation: adding the 100% abietate compound, 310 g of 100% phthalic anhydride, 231 g of urea and 1500 ml of solvent alkylbenzene into a synthesis tank of a 3000 ml three-neck bottle provided with a stirrer, a thermometer and a condenser, and completing initial feeding of materials; s2, carrying out primary heating and heat preservation, keeping a stirring state, and uniformly heating the system to 170 DEG C within 4 hours; according to the application of the rosin ester compound in the synthesis process of copper phthalocyanine, the purity and quality are more stable, in addition, the raw material waste is reduced by improving the reaction sufficiency, the raw material unit consumption of a unit product is reduced, byproducts are reduced, and in the follow-up post-treatment links such as solvent recycling through steam distillation, filtering, washing and drying, the yield of copper phthalocyanine is increased. The discharge amount of three wastes is correspondingly reduced, and the production efficiency, the product quality and the environmental protection requirements are considered.

The present application relates to the technical field of microwave regulation, and particularly relates to a single-molecule quantum bit device based on microwave resonance regulation and a preparation method thereof.The quantum bit device takes a phenyl bridged copper-iron bis-porphyrin molecule or a phenyl bridged copper phthalocyanine-iron porphyrin molecule as a quantum bit functional molecule, and coordination metal ions in a main chain and a side chain of the molecule form a correlated ground state through anti-ferromagnetic coupling, the main chain metal ions play a function of stabilizing a spin environment, and the side chain metal ions serve as precise control sites, in a process of microwave-induced spin resonance, two spins are synchronously flipped to realize switching between 0 and 1; meanwhile, an entangled ground state formed by the main chain and the side chain can effectively block a tunneling electron inelastic scattering channel, inhibit spin flipping, and prolong spin lifetime, so as to maintain stability of a coherent state; the preparation method provided by the present application is simple to operate, reaction conditions are easy to control, and is helpful to scale production.

The utility model discloses a low-temperature drying device for an infrared absorbing material, and relates to the field of copper phthalocyanine processing. The infrared absorption material low-temperature drying device comprises a drying box and a drying mechanism installed in the drying box, and an exhaust mechanism is installed on the drying box. According to the low-temperature drying device for the infrared absorbing material, multiple layers of movable plates are arranged in the box body, meanwhile, infrared lamp tubes are installed at the bottoms of the movable plates, heat radiation reflecting surfaces are formed at the bottoms of the movable plates through mirror polishing treatment, material trays containing the material are sequentially placed at the tops of the multiple movable plates, and infrared irradiation is conducted through the infrared lamp tubes at the tops; the characteristic that copper phthalocyanine has high absorptivity in a near-infrared band is utilized for heating, an infrared lamp tube directly faces the top of a material, the uniform drying effect of the material is guaranteed, heat radiation reflection is conducted through the bottom of the movable plate, and therefore the heating effect is improved, energy is saved, and consumption is reduced.

The application discloses a preparation method of a perovskite solar cell with phthalocyanine copper carbon dots as a hole transport layer and application thereof. The preparation method comprises the following steps: taking one end of a conductive substrate as a negative electrode; preparing an electron transport layer on the rest part of the conductive substrate, then depositing a perovskite absorption layer, coating a phthalocyanine copper carbon dot dispersion solution, annealing to obtain a phthalocyanine copper carbon dot hole transport layer, finally, coating a carbon paste and heating and drying to obtain the perovskite solar cell. The insoluble macrocyclic molecule phthalocyanine copper is treated by using a hydrothermal method, so that the solubilization and carbonization processes are combined, the carbon dots are synthesized from bottom to top, the phthalocyanine copper carbon dot hole transport layer is prepared from a solution and does not contain a dopant, the phthalocyanine copper carbon dot hole transport layer is applied to the perovskite solar cell, and the cell efficiency is as high as 13%. The application breaks the bottleneck that insoluble organic matters cannot be used as a hole transport layer in a solution processing perovskite solar cell, improves the optical performance and thermal stability of the perovskite solar cell, and reduces the manufacturing cost.

The invention discloses a field effect transistor device with a double-plane body heterojunction structure and capable of improving the current switching ratio and a preparation method, and belongs to the field of organic field effect transistors. The field effect transistor device structure sequentially comprises an N-type heavily-doped silicon grid (6), a SiO2 dielectric layer (5), a P-type organic material (4), an N-type organic material and P-type organic material blending layer (3), an N-type organic material (2) and an electrode (1) made of copper. The preparation method comprises the steps of cleaning a silicon wafer, evaporating the pentacene active layer, evaporating the pentacene / hexadecafluorophthalocyanine copper blending layer, evaporating the hexadecafluorophthalocyanine copper active layer, preparing the source / drain electrode and the like. Compared with the conventional heterojunction technology, the field effect transistor with the double-heterojunction structure is formed by adding the blending layer formed by mixing and growing two materials, the performance of the field effect transistor is greatly broken through, the advantage of lower leakage current is shown, the current switching ratio is greatly increased, and meanwhile, the mobility is increased.

The present invention provides a pigment dispersion composition for a black matrix, which can maintain a surface resistance value even after post-baking and can form a black matrix having excellent heat flow characteristics. A pigment dispersion composition for a black matrix, which comprises a black colorant, a sulfonate of copper phthalocyanine, and an amine compound, the amine compound being an imidazole compound and / or a triazole compound; the content of the amine compound being 0.1 to 1.5 parts by mass per 100 parts by mass of the black colorant.

Provided: A simple method for manufacturing ε-type copper phthalocyanine, which has excellent color characteristics such as contrast and brightness and is useful as a color filter for use in liquid crystals, etc. A method for manufacturing an ε-type copper phthalocyanine pigment composition includes the following steps: treating phthalimide methyl copper phthalocyanine with a nonionic surfactant to obtain treated phthalimide methyl copper phthalocyanine; and milling a mixture containing α-type copper phthalocyanine, ε-type copper phthalocyanine, and the treated phthalimide methyl copper phthalocyanine with a solvent salt to obtain a pigment composition.

The invention belongs to the technical field of nano particle preparation, and particularly relates to a preparation method of nano-sized copper phthalocyanine particles. According to the method, the acid solution in which the commercial copper phthalocyanine pigment particles are dissolved is separated out in the ice-water mixture mixed with the anionic surfactant, so that the particle size of the commercial copper phthalocyanine pigment particles is further reduced, and the application field of the particles in the nanometer size is expanded.

This invention belongs to the field of water treatment technology, specifically an electrocatalytic filter membrane for removing bromate from water, its preparation method, apparatus, and application. S1: Carbon nanotube sponge is cut or selected as the substrate, with a size of 20×20×1mm. Simultaneously, aminophthalocyanine copper (purity ≥95%), binder (Nafion 117 solution, concentration 5wt%), and organic solvent N,N-dimethylformamide (DMF, purity ≥99.8%) are prepared. S2: The aminophthalocyanine copper powder and Nafion 117 solution are mixed in DMF solvent using an ultrasonic device at room temperature to form a uniform conductive ink. The electrocatalytic filter membrane prepared by this method has a copper loading of 1.0~3.0 wt%, and the bromate removal rate reaches over 96%. In application, the current density of the electrocatalytic filter membrane is 2~5 mA / cm². 2 Energy consumption is as low as 0.75 kWh / g BrO3. ‑ It operates stably for 120 hours and is suitable for water bodies with bromate concentrations of 0.2~5.0 mg / L. The direct reduction mechanism avoids the problem of organic matter quenching and solves the technical problem of "high energy consumption and poor stability of electrocatalytic materials in reducing bromate".

The invention discloses a copper phthalocyanine-nanogold modified printed electrode and a preparation method and application thereof, and belongs to the technical field of electrochemical detection.The modified electrode is prepared by taking a screen-printed electrode as a substrate, activating the screen-printed electrode, sequentially dispensing 3 microliters of nanogold solution and 5 microliters of 5mg / mL copper phthalocyanine suspension, drying the screen-printed electrode layer by layer and washing the screen-printed electrode. During detection, in a 0.1 M phosphoric acid buffer solution with the pH value of 7.0, the dopamine is detected by adopting a differential pulse voltammetry method. The electrode has good linearity in a range of 1.0 * 10 <-4 >-1.0 * 10 <-3 > M, RSD is equal to 0.98% in three times of repeated detection, the adding standard recovery rate is 93.57%-101.87%, and the electrode can resist interference of glucose and potassium chloride with the concentration of 10 times. Through the synergistic effect of copper phthalocyanine and nanogold, the problems that a traditional electrode is low in dopamine detection sensitivity and poor in interference resistance are solved, and the electrode is easy and convenient to prepare, controllable in cost and suitable for accurate and rapid detection of dopamine in an actual sample.

The invention discloses a polymer and application thereof in preparation of formic acid by electrocatalytic reduction of carbon dioxide. The polymer comprises a unit A and a unit B, the unit A is derived from copper phthalocyanine; the unit B is derived from cyclopentene. The phthalocyanine ring in the copper phthalocyanine can realize electron transport, related functional groups in the molecular structure of the copper phthalocyanine can assist ion transport, and the Cu-N structure and the C = N structure in the molecule can effectively play roles in CO2 fixation and catalytic conversion; cyclopentene is taken as a hydrophobic non-polar molecule, an excellent gas channel can be formed after polymerization, copper phthalocyanine is polymerized by taking cyclopentene as a polymerization substrate, so that a polymer with good catalytic performance is obtained, and particularly, the polymer has a good application prospect in preparation of formic acid by electrocatalytic reduction of carbon dioxide.

The application belongs to the field of ink, and particularly relates to a phthalocyanine green, a preparation method and application thereof. The preparation method of the phthalocyanine green comprises the following steps: 1) mixing phthalic anhydride, urea, cuprous chloride, ammonium molybdate, a solvent and a rare earth chloride, and then performing a first reaction to obtain a first mixture; 2) adding an alkaline aqueous solution to the first mixture obtained in the step 1) to perform a second reaction, remove the organic solvent, cool, and perform suction filtration to obtain a filter cake; 3) washing the filter cake obtained in the step 2) to obtain copper phthalocyanine; 4) performing a third reaction on the copper phthalocyanine obtained in the step 3) in a eutectic mixture of ferric chloride and aluminum chloride and with chlorine in a catalyst to obtain the phthalocyanine green. The purity of the phthalocyanine green prepared by the preparation method of the phthalocyanine green can be improved to more than 99%. The color paste obtained by mixing the phthalocyanine green prepared by the preparation method of the phthalocyanine green and linoleum has good infrared reflectivity at 830-870 nm.

The application discloses a kind of phthalocyanine copper / inverted pyramid perovskite heterojunction photodetector and preparation method, comprising the following steps: 1) etching out the silicon piece with pyramid surface microstructure, as the base of growing perovskite single crystal;2) preparation perovskite solution, utilize silicon piece and glass piece as the frame of growth area restriction, utilize seed growth method, space limited method and inverse temperature crystallization method combined growth method preparation surface pyramid perovskite single crystal;3) utilize thermal evaporation in perovskite single crystal surface evaporation phthalocyanine copper film formation heterojunction, then utilize conductive carbon paste as upper and lower electrode preparation photodetector.The photodetector prepared by the application is stable at normal temperature and pressure, and has better photoelectric response relative to the control group device in a high humidity environment, and the device has good long-time humidity stability, which has guiding significance for the future high-performance photodetection field in high humidity environment such as sea, ship and island.

The invention relates to the technical field of polyimide film preparation, and particularly discloses a high-binding-force polyimide film and a preparation method thereof.The preparation method comprises the steps that 1, novolac epoxy resin, copper phthalocyanine tetrasulfonate, a silane coupling agent and a diamine monomer are added into a polar solvent together; 2, gradually adding dianhydride monomers into the system, and reacting to obtain polyamide acid resin; and 3, carrying out defoaming, coating and solvent removal treatment on the polyamide acid resin to obtain a gel film, and carrying out imidization treatment on the gel film to obtain the polyimide film. The bonding strength of the polyimide film is kept to be 12 N / cm or above, is obviously superior to that of a polyimide film prepared through a traditional technology, and can be used in the field of FCCL.