74 results about "Nanocomposite coating" patented technology

The invention discloses a preparation process of a high-strength corrosion-resistant stainless steel fastener. The preparation process comprises the steps of material modification, warm upsetting forming, stabilizing treatment, cryogenic strengthening, gradient aging, surface treatment, post-treatment and the like. According to the process, the alloy component proportion is optimized, a thermal mechanical treatment technology of warm upsetting forming, subzero treatment and gradient aging is combined, a nano-composite coating and micro-arc oxidation sealing process is innovatively introduced, and the process comprises vacuum melting and controlled rolling of customized high-nitrogen stainless steel wires, deformation-induced martensite regulation in warm upsetting forming, low-temperature hot rolling, high-temperature hot rolling, high-temperature hot rolling, high-temperature hot rolling, high-temperature hot rolling and high-temperature hot rolling. The tensile strength and the salt spray corrosion resistance of the fastener are remarkably improved through deep cooling-medium temperature aging synergistic strengthening, double-layer nano TiN / CrN composite coating deposition and micro-arc oxidation micropore sealing treatment, the problem that a traditional stainless steel fastener is insufficient in strength and low in stress corrosion sensitivity is solved through the technology, and the technology is particularly suitable for the extreme environments such as aerospace and ocean engineering.

The invention relates to the technical field of metal surface protection materials, in particular to a wear-resistant anticorrosive coating based on a nano-composite technology and a preparation method thereof, which are suitable for surface protection of metal pipelines and equipment in harsh environments such as chemical equipment, ocean engineering, electric power facilities and the like. The invention relates to a high-temperature-resistant flame-retardant coating which comprises the following raw material components in parts by weight: 20-30 parts of nano aluminum oxide; 10 to 15 parts of nano titanium oxide; 1 to 3 parts of graphene; 1-3 parts of a composite filler; 3-5 parts of a silane coupling agent; 40 to 50 parts of modified epoxy resin; 10-15 parts of a curing agent; 5-8 parts of a toughening agent; 2-4 parts of an anti-wear agent; and 0.5-1 part of a leveling agent. Under the combined action of all the components, the obtained wear-resistant and corrosion-resistant nano composite ceramic coating for the metal surface has excellent high temperature resistance, corrosion resistance, wear resistance, aging resistance and bonding strength.

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.

The invention provides a marine self-repairing anti-corrosion coating, and belongs to the technical field of anti-corrosion coatings, and the anti-corrosion coating is a nano composite coating formed in situ through an electrochemical co-deposition method; the anticorrosive coating comprises a continuous phase formed by polyaniline as a matrix material, polydopamine uniformly dispersed in the matrix material as an interface reinforcement phase, and a layered molybdenum disulfide-based functional nano material also dispersed in the matrix material as a functional filler, the layered molybdenum disulfide-based functional nano material is a molybdenum disulfide nanosheet with a 1T / 2H heterojunction structure, and the surface of the nanosheet is loaded with nanoscale cerium oxide particles or a molecular benzotriazole corrosion inhibitor through chemical modification. According to the invention, the problems of environmental pollution and insufficient stability of the existing anticorrosive coating and environmental problems caused by excessive addition of iron in the conventional Fenton reaction are solved.

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 an aluminum veneer long-acting anti-corrosion process based on a nano-composite coating, a nano-composite coating material is processed to the surface of an aluminum veneer through the steps of aluminum veneer surface pretreatment, nano-composite coating preparation and coating curing, and the nano-composite coating material adopted for coating of the coating is an environment-friendly material. No harmful substance is generated in the preparation process, and the preparation method is environment-friendly.

The present invention belongs to the field of surface engineering technology, and specifically relates to an oxide-based gradient multi-phase nanocomposite coating and a preparation method thereof. The composite coating includes a Cr-Al-Si layer, a Cr-Al-Si-N layer, and an xAl2O3-yCr2O3-zSiO2-kY2O3-iEr2O3 layer arranged in sequence. The xAl2O3-yCr2O3-zSiO2-kY2O3-iEr2O3 layer is a nano multi-phase composite layer composed of Al2O3, Cr2O3, SiO2, Y2O3, and Er2O3 phases, and the molar ratio between each phase is x:y:z:k:i, where 0 < x, y, z, k, i < 0.4, and x + y + z + k + i = 1. This coating is obtained by using pulsed multi-arc ion plating and radio frequency magnetron sputtering for the corresponding coatings respectively in a vacuum environment. The coating of the present invention has the characteristics of high bonding strength, high hardness, high hydrogen resistance factor, high solar absorptance, and low solar emittance, with excellent performance, and can greatly improve the problem of performance deterioration of the base material caused by hydrogen permeation.

The application discloses a kind of special self-cleaning nano composite coating for photovoltaic glass and preparation method thereof, to provide a kind of special self-cleaning nano composite coating for photovoltaic glass, the coating has photocatalytic degradation, super-hydrophilic and long-acting weather resistance and the like functions, while ensuring high light transmittance and excellent adhesion, its technical scheme contains the following weight percentage components: lithium silicate 5.5~9%, potassium silicate 5~7%, silica sol 11~15%, nano TiO2 dispersion liquid 3.5~7.0%, nano cerium oxide 0.5~2%, sulfobetaine 0.3~0.9%, zirconium methacrylate 0.2~1.8%, pH regulator 1.0~4.5%, and the balance is mixed solvent;It belongs to the field of coating technology.

A method of coating a metal part in a single physical vapor deposition device which comprises placing a metal part having a surface into a single physical vapor deposition device comprising a plasma-enhanced magnetron sputtering (PEMS) apparatus. This is followed by nitriding the metal part surface and then depositing a Ti—Si—C—N nanocomposite coating.

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 provides a CrAlBTiSiN nano-composite coating as well as a preparation method and application of the CrAlBTiSiN nano-composite coating. According to the CrAlBTiSiN nano-composite coating and the preparation method thereof, B, Ti and Si are doped in the CrAlN coating, the doped Ti can form a multi-element solid solution with Cr, Al and other elements, lattice distortion is increased through a solid solution strengthening mechanism, and therefore the hardness and abrasion resistance of the CrAlBTiSiN nano-composite coating are improved; by doping Si, the hardness of the CrAlBTiSiN nano composite coating is improved; the CrAlBTiSiN nano-composite coating comprises CrN, AlN and alpha-BN phases in the aspect of crystal structure due to the doping of B, so that the CrAlBTiSiN nano-composite coating has excellent crystallinity, the compactness degree of the internal organization structure is relatively high, and the hardness and the high toughness of the CrAlBTiSiN nano-composite coating are improved.

The invention discloses a water-based energetic nano coating agent suitable for propellant powder. The coating agent is an energetic nano composite aqueous dispersion formed by uniformly mixing an NC (nitrocellulose) nano aqueous dispersion and Surease. The coating agent is prepared by adopting a nano composite coating technology (NCT), not only has excellent film-forming property, but also has the characteristic of high energy of NC, and is suitable for insensitive coating of the propellant, and the coated propellant achieves the effects of low energy loss and combustion gradual increase.

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 application discloses an AlCrTiSiN composite coating with a nanocrystal / amorphous composite structure or a single amorphous structure and a preparation method of the AlCrTiSiN composite coating. The coating is prepared by adopting a pulse direct current magnetron sputtering and radio frequency direct current magnetron sputtering composite technology, and an AlCrTi alloy target and a single Si target are selected as the target material. The alloy target is connected with a direct current power supply, and the single Si target is connected with a radio frequency power supply. When the coating is plated, the AlCrTi alloy target is turned on, the bias voltage is adjusted to be -20-150 V, the vacuum chamber pressure is adjusted to be 0.3-1.0 Pa, an AlCrTi transition layer is deposited, and the deposition time is 10-30 min. The AlCrTi is kept on and the reaction gas N2 is introduced, the Si target is turned on, and the AlCrTiSiN nanocomposite coating is deposited. The AlCrTiSiN nanocomposite coating prepared by the application has the advantages of simple preparation process, controllable composition, good repeatability, easy industrial production and strong practicability.

An organic nanocomposite coating for a pharmaceutical preparation includes a plant-based nanostarch derived from avocado seed, pumpkin peel, and potato starch. The coating further includes an organic composition including Acacia arabica gel, Lannea sp. natural gum, corn starch, moringa seed starch, olive leaf extract, fish-based glycerin, and okra gel. The coating further includes an antioxidant mixture including at least one pigment, and a plasticizer. The nanostarch has an average particle size of 16 nanometer (nm) or less.

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 multifunctional nanocomposite coating material, a preparation method and application thereof. The coating material comprises a first functional component, a second functional component, a third functional component, a fourth functional component and an auxiliary agent; wherein the first functional component is nano titanium oxide and / or nano zinc oxide, the second functional component is a zinc-containing phosphate, the third functional component is nano titanium oxide and / or nano silicon oxide; and the fourth functional component is an organic fluorine resin.

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.