44 results about "Nanocomposite coating" patented technology

The invention relates to the technical field of ultraviolet curing coatings, and discloses a rapid acrylic plate coating process based on a nano-composite coating, which comprises the following two steps of: 1, irradiating by using deep ultraviolet light with the wavelength of 254-310 nanometers, triggering a photoinduced base generator to catalyze ammonium bicarbonate to decompose, and then, carrying out irradiation by using ultraviolet light with the wavelength of 254-310 nanometers; the decomposition reaction of ammonium bicarbonate generates gas in situ to form a physical oxygen barrier layer, the endothermic effect inhibits the temperature rise, and the product ammonia gas can also catalyze the thiol-Michael addition reaction on the surface of the coating to form a chemical oxygen sealing layer; 2, a UVA-LED lamp with the wavelength of 395 nanometers is used for irradiation, main body free radical polymerization is efficiently initiated, and deep curing of the coating is achieved. Through the synergistic effect of physical oxygen isolation and chemical oxygen sealing, ultra-fast and defect-free curing can be achieved in the air without nitrogen protection, thermal damage to a thermosensitive base material is avoided, and the service life of the coating is prolonged. And the obtained coating has high hardness and high adhesive force.

The present invention deals with the development of novel nanocomposite paints for biofouling removal coatings, which result from the mixing of two components, where the first component is an epoxy resin (component A) and the second component is a suitably modified polymerization agent (hardener). These hardeners are modified with hydrophobic nanoparticles based on functional dendritic polymers with symmetric or asymmetric architecture or based on functional inorganic nanoparticles (metal or metalloid nanoparticles or a mixture thereof). Both the polymeric nanoparticles and the inorganic nanoparticles were modified with suitable lipophilic groups. These nanocomposite paints addressed by the present invention exhibit organic microfilm control properties and can be effectively applied to objects immersed in seawater as biofouling removal coatings.

The application relates to a neodymium-iron-boron magnet surface nano-composite coating optimization method in the field of new materials, which comprises the following steps: according to an optimization scheme for hydrogen embrittlement inhibition, local electroplating parameter adjustment is carried out on a high-porosity area of the coating, multi-layer composite deposition technology is used to optimize the coating structure, and higher uniformity of the coating microstructure data is obtained; according to final coating performance data, relevant index information of mechanical performance decline is obtained, digital evaluation of coating adhesion and strength is carried out by using a preset mechanical performance analysis model, and an optimization result of the mechanical performance is determined; according to the optimization result of the mechanical performance, all process parameters and performance data are input into a database through data integration technology, a traceable process optimization file is formed, and complete neodymium-iron-boron magnet electroplating process technology improvement records are obtained.

This invention relates to an aqueous polyimide / SiO₂ nanocomposite coating and its preparation method. The preparation method of the aqueous polyimide / SiO₂ nanocomposite coating includes: dissolving an aromatic diamine monomer in a system composed of water and an organic base; adding an aromatic dianhydride monomer in batches to react and prepare an aqueous polyamic acid salt solution; adding a silane coupling agent to the aqueous polyamic acid salt solution to react and then adding an orthosilicate ester for in-situ hydrolysis and condensation to prepare an aqueous polyamic acid / SiO₂ nanocomposite coating; coating the aqueous polyamic acid / SiO₂ nanocomposite coating onto a substrate surface, followed by drying and imidization treatment to obtain the aqueous polyimide / SiO₂ nanocomposite coating. The aqueous polyimide / SiO₂ nanocomposite coating of this invention has excellent heat resistance and adhesion properties, and can be widely used in high-temperature protective coatings and electronic packaging fields.

The invention discloses a polysilazane nano composite coating and a method for treating the surface of a mold. The polysilazane nano composite coating comprises the following components: polysilazane resin, nano aluminum oxide, nano silicon oxide, nano boron nitride, a dispersing agent, a flatting agent, a defoaming agent and a solvent. The method comprises the following steps: spraying a polysilazane nano composite coating on the surface of a mold; the mold is placed at the temperature of 140-160 DEG C to be baked for 15-20 min, and then the mold is heated to 240-260 DEG C to be baked for 30-60 min. The problems of pollution, high cost, poor coverage, easiness in stripping and the like existing in an existing mold surface treatment technology are solved.

The invention discloses chemical-resistant glass based on a nano-composite coating and application of the chemical-resistant glass, and belongs to the technical field of glass. The chemical-resistant glass based on the nano-composite coatings comprises glass subjected to surface treatment and the nano-composite coatings coated on the upper surface and the lower surface of the glass, the nano composite coating is prepared from the following components in parts by weight: 30 to 35 parts of epoxy resin, 25 to 35 parts of modified phenolic resin, 3 to 5 parts of nano pigment filler, 25 to 30 parts of non-active diluent, 5 to 15 parts of active diluent and 0.5 to 1.5 parts of auxiliary agent; the modified phenolic resin is obtained by modifying phenolic resin with a benzoheterocyclic cyano modifier. Through combination of molecular structure design, a nano-composite technology and process optimization, the nano-composite coating which is good in adhesive force, high in hardness, good in transparency and resistant to chemical corrosion and the glass product are successfully prepared, and the glass product is excellent in comprehensive performance and has practical application value.

The invention discloses an AlCrSiWN / Mo nano-composite coating with high hardness and high wear resistance and a preparation process of the AlCrSiWN / Mo nano-composite coating, and belongs to the technical field of coatings. The nano-composite coating is formed by doping Mo element in an AlCrSiWN high-hardness coating by adopting an arc ion plating technology, and the thickness of the nano-composite coating is 3-4 microns. The preparation process of the coating comprises the steps that an AlCrN transition layer of a columnar crystal structure is prepared firstly, then an AlCrSiW target and a CrMo target are started at the same time, the AlCrSiWN / Mo nano-composite coating with the high hardness and the self-lubricating performance is obtained by regulating and controlling the evaporation current of the CrMo target to be 122-150 A and utilizing the synergistic effect of the self-lubricating characteristic of the Mo element and the high hardness characteristic of the AlCrSiWN coating, and the self-lubricating performance of the AlCrSiWN / Mo nano-composite coating is improved while the high hardness of the coating is kept. The toughness and the self-lubricating performance of the coating are improved, and the friction coefficient is reduced while crack propagation is inhibited.

The invention discloses an ultralow-friction polyimide-based gradient nano composite coating and a preparation method thereof, and belongs to the technical field of metal surface modification and protection. The polyimide-based gradient nano composite coating comprises a polyimide layer located on the surface of a base material and a gradient composite structure layer which is formed on the surface or in the polyimide layer through self-assembly and contains nano filler, wherein the nanofiller is selected from a Ti3C2TX nanosheet, a MoS2 nanosphere or a combination of the Ti3C2TX nanosheet and the MoS2 nanosphere according to a mass ratio of (0.5 to 2): 1. According to the method, through the step-by-step strategy that the precursor is not dried and the filler suspension liquid is sprayed, lossless spraying of the powder material on the surface of the base material is achieved, and the method has the wide application range and the huge practical value.

The invention discloses a nano-composite coating for eliminating partial discharge defects of electrical equipment as well as a preparation method and application of the nano-composite coating. The coating consists of a component A, a component B and a component C, wherein the component A is a coating main material and comprises a composite resin matrix formed by a block copolymer of amino-terminated polyether-polysiloxane and bisphenol A diglycidyl ether, a silane modified nano BN sheet, a composite nano filler formed by nano SiO2 and nano TiO2, and a hydrophobic gas-phase SiO2 filler anti-settling agent modified by an epoxypropane-ethylene oxide block copolymer; a coating layer of the paint has good toughness and electrical performance, can adapt to the construction environment of partial discharge defect elimination and insulation coating external damage prevention, and can provide good and long-term partial discharge defect elimination and external damage prevention protection force; meanwhile, the coating effectively solves the problem of nano agglomeration, provides powerful guarantee for long-term stable storage of the coating and adaptation to use requirements of partial discharge defect elimination and external damage, and has good practical value and popularization prospect.

The application discloses a cutting tool deposited with a multilayer nanocomposite coating and a preparation method thereof, and relates to the technical field of cutting blades. The spherical alumina sand particles are used in the application, different particle sizes of the sand particles are compounded, large particle size alumina sand particles A are introduced, the coating adhesion is improved, and then the wear resistance of the cutting tool is improved. The (TiZrHfNb)N alloy transition layer is deposited in the application, the element interdiffusion between the coating and the substrate is effectively blocked, the high-temperature stability of the cutting tool is improved, the internal stress of the coating is relieved, and the interface bonding force is improved. The Si element in the (TiAlSi)N layer deposited in the application forms an amorphous phase, the high-temperature stability of the cutting tool is improved; the (TiNbCN) layer generates an oxide phase with self-lubricating characteristics at high temperature, the wear resistance can be improved; the addition amount of Si is increased, a dense oxide film is formed at high temperature to protect the cutting tool, and thus the wear resistance is improved.

The invention discloses a TiAlN / CrAlSiN nano multilayer composite coating based on a Cr layer and a preparation method, the preparation method adopts an arc ion plating technology to deposit the coating, and the preparation method comprises the following process steps: S1, workpiece surface pretreatment; s2, vacuumizing and heating by a vacuum coating machine; s3, etching the surface of the workpiece; s4, depositing a Cr layer; s5, depositing an AlTiN layer; s6, nitrogen is introduced, TiAlN / CrAlSiN nanometer multiple layers are alternately deposited, and the operation is periodically and alternately repeated for 50-100 times; and S7, a CrAlSiN layer is deposited, a CrAlSi target is started, the target current ranges from 80 A to 400 A, nitrogen is introduced, the cavity pressure ranges from 3 Pa to 4 Pa, the workpiece bias voltage ranges from-100 V to-150 V, and the deposition time ranges from 2 h to 5 h. In the step S6, when the TiAlN layer is deposited, a TiAl target is started, the target current ranges from 80 A to 400 A, the workpiece bias voltage ranges from-30 V to-150 V, the cavity pressure ranges from 1.5 Pa to 4.5 Pa, and the deposition time ranges from 5 s to 30 s; when the CrAlSiN layer is deposited, a CrAlSi target is started, the target current ranges from 80 A to 400 A, the cavity pressure ranges from 1.5 Pa to 4.5 Pa, the workpiece bias voltage ranges from-30 V to-150 V, and the deposition time ranges from 5 s to 30 s. The method can be widely applied to the technical field of surface engineering and coatings.

The present invention relates to a coating technology for clear aligners, and more specifically, to a multifunctional nanocomposite coating capable of improving oral moisture resistance and mechanical strength while simultaneously providing antibacterial properties, self-healing properties, pH responsiveness, and smart monitoring functions, a clear aligner having the same, and a method for manufacturing the same.

The invention "Manufacturing an antibacterial nanocomposite coating based on water-based polyurethane / double hydroxide layer reinforced with an antimicrobial copolymer with the ability to prevent bacterial growth" relates to the field of the medical industry, coatings and coverings; and also relates to the field of medical equipment for the production of antibacterial polymer nanocomposites that inhibit bacterial growth. This nanocomposite coating consists of three different layers with antibacterial properties, each layer performing a different function in destroying bacteria. The first layer uses water-based polyurethane modified with chitosan and polyvinyl alcohol; the second layer uses layered double hydroxide modified with the antibacterial agent cetyltrimethylammonium bromide (cetolone); and finally, the third layer uses an antimicrobial polypropylene-ethylene copolymer (PP-R), which are mixed together to form an antibacterial nanocomposite coating.

The invention relates to the technical field of metal corrosion electrochemical protection and functional nano composite coating materials, in particular to a high-conductivity graphene low-zinc anticorrosive coating and a preparation method thereof.The coating is prepared from graphene oxide, zinc powder, a resin matrix, a mixed solvent, inorganic filler, a curing accelerator and auxiliaries; the preparation method comprises the following steps: S1, preparing functionalized graphene oxide; s2, preparing a zinc-graphene composite conductive filler; and S3, preparing the high-conductivity graphene low-zinc anticorrosive coating. Through precise molecular grafting, a strong chemical bonding bridge is constructed between GO and zinc powder, and the dispersion stability of GO in a coating system is synchronously improved, so that the low-zinc-content coating with high conductivity and excellent corrosion resistance is prepared by taking GO as a core; the total mass content of zinc powder in the high-conductivity graphene low-zinc anticorrosive coating prepared by the method provided by the invention is lower than 50%.

The utility model discloses a grinding device for a nano composite coating, which belongs to the technical field of nano material processing equipment and comprises a bottom plate, a support column, four groups of support legs, a finished product storage box, an inferior-quality product storage box and two groups of fixing plates are fixedly mounted at the top of the bottom plate, and a rotating shaft is rotatably mounted in the support column. A connecting seat is fixedly mounted at the bottom of the rotating shaft, a grinding rod is arranged at the bottom of the connecting seat, a supporting ring is fixedly mounted at the tops of the four supporting legs, a grinding table is fixedly mounted in the supporting ring, four limiting rods are slidably mounted in the two fixing plates, and first springs are mounted on the outer sides of the multiple limiting rods in a sleeving mode; a frame body is fixedly installed between the four sets of limiting rods located on the same side and the four sets of limiting rods located on the other side, and four sets of guide rods are fixedly installed in the frame body, so that the quality and purity of finished products are guaranteed, the qualified rate of the products is increased, meanwhile, waste is reduced, the production cost is reduced, and the utilization rate of raw materials and the yield of the products are increased.

The utility model discloses a high-stability spray gun for nano-composite coating spraying, and particularly relates to the technical field of spray guns for nano-composite coating spraying, a cover body is provided with a spray gun, the spray gun is provided with a mounting groove, the mounting groove is internally provided with a second spray head, the second spray head is provided with a second spray groove, and the second spray groove is provided with a circular guide spray head. And a plurality of guide grooves which are arranged in a circumferential array are formed in the circular guide spray head. According to the high-stability spray gun for spraying the nano-composite coating, the spray gun is mounted through the cover body on the box body, a coated object is coated through the mounting groove in the spray gun and the second spray head in the mounting groove, atomized liquid is sprayed through the second spray groove in the second spray head, and the spraying effect of the nano-composite coating is improved. Further particle atomization of the atomized liquid after atomization is achieved through a circular guide spray head arranged on a second spray groove, and atomization discharge of the atomized liquid is achieved through a plurality of guide grooves in the circular guide spray head.

The application provides a high-toughness high-wear-resistance epoxy composite coating and a preparation method thereof, and belongs to the technical field of polymer coatings and comprises the following steps: step 1, preparing hydroxylated nanoscale titanium dioxide; step 2, preparing silanized nanoscale titanium dioxide; step 3, preparing a core-shell structure graphene oxide-titanium dioxide; and step 4, preparing the high-toughness high-wear-resistance epoxy composite coating. The application has the advantages of mild preparation conditions, scientific rationality, precision and convenience, great achievement transformation potential, easy preparation of large-scale high-toughness high-wear-resistance nanocomposite coatings and wide application range.

The present disclosure relates functional textiles having antibacterial and antioxidant properties. The textiles comprise a nanocomposite textile coating composition comprising a plurality of silicene carbon quantum dots (SiCQDs). The SiCQDs comprise polyethylene (PEI) and silicene; a polymer matrix; and an antibacterial agent. The SiCQDs and the antibacterial agent are dispersed in the polymer matrix, and the composition has antibacterial and antioxidant properties. The present disclosure further relates to a method of making a nanocomposite textile coating composition. An aqueous solution of silicene and polyethylenimine (PEI) is subjected to a hydrothermal reaction to obtain a SiCQD suspension, and the SiCQDs are separated from the suspension and dried. A polymer and an antibacterial agent are mixed to obtain a polymer matrix / antibacterial agent mixture. The SiCQDs are added to the polymer matrix / antibacterial agent mixture to obtain the nanocomposite coating composition.

The invention relates to the technical field of polymer nano-composite coatings, and particularly discloses a galvanic corrosion resistant nano-composite coating material and a preparation method thereof. The invention relates to an anti-galvanic corrosion nano-composite coating material, which comprises a component A and a component B which are independently stored and are mixed during use, the component A is prepared from the following raw materials in parts by weight: 10-20 parts of epoxy resin type A, 5-15 parts of epoxy resin type F, 55-80 parts of p-chlorobenzotrifluoride, 1-3 parts of hexagonal boron nitride, 2-5 parts of nano silicon dioxide and 1-5 parts of inorganic toner; the component B is prepared from the following raw materials in parts by weight: 40-60 parts of phenolic aldehyde amine; 30 to 40 parts of triethylene tetramine; 5 to 10 parts of N-aminoethyl piperazine; the hexagonal boron nitride and the nano silicon dioxide are pretreated before being used. The anti-galvanic corrosion nano-composite coating material provided by the invention can significantly improve the shielding property and electrochemical stability of an ultrathin coating, and realizes the protection effects of high impedance, low corrosion current and long-term stability.

The present invention relates to a ternary nanocomposite coating having high- performance anti-corrosive properties when applied to metal surfaces. In particular, the invention relates to an anti-corrosive coating for metals which, due to its composition, is applied in a fast, efficient, highly safe and environmentally friendly manner. The invention also relates to a bulk material for the production of elements and objects with anti-corrosive properties.

The invention discloses a high-pressure-resistant corrosion-resistant nano-composite coating material for a tank body of an oil tank truck and a preparation method of the high-pressure-resistant corrosion-resistant nano-composite coating material, and relates to the technical field of protective coatings. Nano titanium carbide and nano hafnium oxide which are pretreated by a specific coupling agent are compounded to serve as a double-nano reinforced phase, and the nano titanium carbide and the nano hafnium oxide have a synergistic effect to realize improvement of multiple properties; nano rare earth oxide is introduced as an interface regulator, the interface bonding state of double nanophase and a polyimide matrix is effectively optimized, meanwhile, specific technical parameters of the steps of matrix liquid preparation, nanophase dispersion liquid preparation, composite slurry preparation, coating curing and the like are refined, it is ensured that the coating performance is stable and uniform, industrial batch production can be achieved, and the application prospect is wide. The protection device is suitable for long-acting protection of tank bodies of oil tank trucks for transporting various refined oil products and chemical raw materials, and has wide application prospects and practical values.

It is an object to provide a coating material having heat resistance, adhesion resistance, durability, chemical resistance, low friction, and releaseability applied to a base material, and to provide a manufacturing method and manufacturing system for such a coating material. A ternary nanocoposite coating material comprising C—F—H or C—F—Si applied to a base material is disclosed.

The invention discloses a wide-temperature-range wear-resistant high-entropy nano-composite coating and a preparation method thereof. A tool base body is sequentially subjected to oil removal treatment and cleaning; a SiTiVNbCrB N high-entropy alloy nano-composite coating is deposited on the cleaned cutter base body by taking a SiTiVNbCrB high-entropy alloy target and a TiB2 target as sputtering sources and taking mixed gas of argon and nitrogen as working gas and adopting a mode of combining radio frequency magnetron sputtering and direct current magnetron sputtering; according to the method, the B-containing high-entropy alloy nano composite coating is prepared through co-sputtering of the SiTiVNbCr high-entropy alloy target and the TiB2 target, the content of Ti and B is precisely regulated and controlled through the TiB2 target, volatilization of the B element is avoided, the density of the target material is improved, radio frequency and direct current magnetron sputtering are combined, the obtained coating is high in hardness, small in grain size and compact in structure, and the preparation process is simple. The thickness and stoichiometric ratio of the coating can be controlled by adjusting the sputtering power, so that the wear resistance of the coating at the room temperature to 500 DEG C is improved, the wear rate range is only 0.05-44.97 * 10 <-9 > mm < 3 > / (N.m), and the application range is widened.

This invention discloses a polyester cable with a polyurethane nanocomposite coating and its preparation method. The method involves coating the surface of a polyester cable with a composite coating of fluorinated polyurethane and aminated nano-zinc oxide. The method includes preparing a fluorinated chain extender; preparing aminated nano-zinc oxide; reacting diisocyanate, polyol, and catalyst to obtain a prepolymer, then adding a fluorinated chain extender, a small molecule chain extender, and tetrahydrofuran to obtain a fluorinated polyurethane solution; dispersing the aminated nano-zinc oxide in the fluorinated polyurethane solution to obtain a fluorinated polyurethane nanocomposite solution; immersing the polyester cable in the fluorinated polyurethane nanocomposite solution, removing it, air-drying, and baking it; repeating this process several times to obtain the polyester cable with the polyurethane nanocomposite coating. The polyester cable of this invention possesses UV resistance, seawater corrosion resistance, and marine antifouling properties. The preparation method is simple, and it has broad application prospects in marine engineering, ship mooring, and marine fisheries.

The invention discloses a high-strength, high-toughness and high-transparency light-cured polyurethane nano composite coating and a preparation method thereof, and belongs to the field of functional materials. The preparation method comprises the following steps: preliminarily stripping montmorillonite through a specific aqueous solvent and a dispersion method to prepare a uniformly dispersed montmorillonite aqueous dispersion liquid; then, firstly modifying by adopting micromolecular unsaturated organic amine salt, and then modifying, centrifuging and dispersing by adopting anionic light-cured waterborne polyurethane to obtain a modified montmorillonite dispersion liquid; and finally, compounding the modified montmorillonite dispersion liquid with light-cured polyurethane to obtain the light-cured polyurethane nano composite coating. The prepared photocuring polyurethane nano composite coating has more excellent performance (high strength, high toughness and high transparency), and can be better applied to the fields of electronic packaging, protective coatings and the like.

The invention relates to a nanocomposite coating system that exhibits superior barrier properties for reducing the ingress of unwanted guest species such as moisture (e.g., water vapor) and a facile method for preparing the same nanocoating system on an industrial scale. The current coating materials are able to reduce the overall ingress of unwanted guest species in a substantial improvement over the prior art.

The invention discloses a preparation method of a Ni2Al3 nano composite coating containing CeO2 dispersed nanoparticles. The preparation method comprises the following steps: (1) cutting a nickel plate into a sample; (2) carrying out step-by-step mechanical polishing on the sample by using SiC abrasive paper, and carrying out ultrasonic cleaning in deionized water, ethanol and acetone in sequence; (3) preparing a Ni-CeO2 nano composite layer on the nickel substrate through electro-deposition; (4) characterizing the surface appearance and elemental composition of the Ni-CeO2 nano composite layer by using a scanning electron microscope and energy spectrum analysis, and carrying out quantitative analysis on the CeO2 content through INCA software; (5) confirming the particle size of the CeO2 nanoparticles through a transmission electron microscope; and (6) the Ni-CeO2 nano composite film is treated through a low-temperature embedding aluminizing process, and the Ni2Al3-CeO2 composite coating is obtained. The coating method is not only suitable for pure nickel, but also suitable for nickel-based high-temperature alloy, stainless steel, Ni-Cr and other alloys. The invention provides an economical, efficient, extensible and effective solution for improving the durability of materials in high-temperature industrial application.

This invention belongs to the field of environmental monitoring and nuclear pollution monitoring technology. Specifically, it discloses a method for preparing a nanocomposite coating for colorimetric detection of lead ions and its application. First, by optimizing the amount of dispersant PVP, reaction concentration, and temperature, uniformly sized silver nanoparticles (AgNPs) are prepared. Then, these nanoparticles are functionalized with thiol groups using a silane coupling agent. Finally, they are composited with a polyvinyl alcohol (PVA) solution to obtain a composite smart coating that combines color response and peelability. This coating has a detection limit of up to 3 mMol / L for lead ions, exhibiting good selectivity, stability, and hydrophilicity. Its elongation at break after film formation reaches 560%, providing a direct indication of lead contamination through color changes. Furthermore, the contaminant can be easily recovered by peeling off the film. This invention is suitable for rapid and visual detection and treatment of lead contamination at nuclear facilities.

The application relates to the technical field of composite coating, and provides a polylactic acid / polydopamine / mica nano composite coating as well as a preparation method and application thereof. The polylactic acid / polydopamine / mica nano composite coating adopts polydopamine modified mica as a nano filler, can improve the interface compatibility of mica and polylactic acid, realizes stable dispersion of mica in polylactic acid, and has excellent mechanical properties, thermal stability and ultraviolet shielding performance. The polylactic acid / polydopamine / mica nano composite coating is used to prepare a coating on the surface of a substrate, can improve the surface gloss and hardness of the substrate, and has strong interface bonding force between the substrate and the coating.

The invention relates to the technical field of die surface strengthening and service life prolonging, in particular to a composite surface treatment method for prolonging the service life of a die-casting die, which combines high-energy pulse ion nitridation with PVD (Physical Vapor Deposition) multi-layer nano composite coating deposition. The method sequentially comprises the steps of mold pretreatment; applying pulse bias to perform high-energy pulse ion nitridation under the conditions that the volume ratio of N2 to Ar to H2 is (4-6): 2: (2-3) and the pressure is 100-300Pa; then PVD multi-layer nano composite coating deposition is carried out, a gradient structure of a Cr bonding layer, a CrN bonding layer and a TiAlCrN main layer is formed, and the total thickness of the coating is 5-8 microns; and finally, performing fine polishing until the surface roughness Ra is less than or equal to 0.08 mu m. According to the invention, matrix strengthening and toughening and high wear resistance and corrosion resistance of the surface layer are considered, mold sticking and wear can be obviously reduced, and the service life of the mold is prolonged.