75results about "Magnetic paints" patented technology

The invention relates to a coating formula, a heating element and a preparation method of the heating element, the coating formula comprises the following components in percentage by mass: 60 to 70 weight percent of Cu, 0.005 to 0.05 weight percent of Sn, 0.001 to 0.01 weight percent of P, 0.005 to 0.05 weight percent of Fe, 0.001 to 0.02 weight percent of Si, 0.001 to 0.05 weight percent of Ag and 30 to 40 weight percent of Zn, and the sum of the components is 100 weight percent. The electric heating device has the advantages of quick response, high energy utilization rate, uniform temperature distribution, long service life and the like, and is particularly suitable for manufacturing efficient and energy-saving electric heating appliances.

An coating composition includes a modified melamine salt and a binder. An endothermic temperature of the modified melamine salt is lower than an endothermic temperature of an unmodified melamine salt as characterized by a differential scanning calorimetry curve. A difference between the two endothermic temperatures is Δt, 5 °C ≤ Δt ≤ 100 °C. This configuration enables the electrochemical device to exhibit excellent high-temperature storage performance and mechanical safety performance.

The application relates to the technical field of aviation enamel, and provides aviation high-performance enamel and a preparation method. The enamel is composed of modified fluorocarbon resin, nano boron nitride grafted polysiloxane, zinc hexafluoroacetylacetone, zirconium phosphate silver-loaded antibacterial agent, bisphenol F type epoxy resin and cerium oxide coated graphene, wherein the modified fluorocarbon resin is a tetrafluoroethylene-perfluoroalkyl vinyl ether-maleic anhydride terpolymer. The preparation method adopts a special system, realizes dynamic stage mixing through a lifting-rotating linkage stirring mechanism, and comprises a driving motor, a transmission rod and an arc-shaped piece which are matched to enable the stirring rod to synchronously perform lifting and rotating movement; the stirring direction is controlled to be reversed through the engagement of a special-shaped groove and the driving rod, and a pulse type reduction process of the silver-loaded antibacterial agent is combined. The aviation high-performance enamel has obvious improvement in salt mist resistance, adhesion, antibacterial rate and thermal decomposition performance.

The invention relates to the field of waterproof materials, and discloses a composition for a modified asphalt coating material, the modified asphalt coating material, a preparation method of the modified asphalt coating material and a waterproof coiled material, the composition contains a main agent and auxiliaries, and the main agent comprises matrix asphalt, solvent oil with the aromatic hydrocarbon content larger than or equal to 70 wt%, linear SBS, SBR, neodymium iron boron magnetic powder, cobalt boroacylate and styrene-indene resin; based on the total weight of the composition, the content of the matrix asphalt is 40-55 wt%, the content of the solvent oil is 5-10 wt%, the content of the linear SBS is 3-5 wt%, and the content of the SBR is 3-5 wt%. The waterproof coiled material provided by the invention is excellent in heat preservation property, low temperature resistance and deformation resistance and is suitable for metal roofs.

The invention discloses a high-weather-resistance steel pipe for a photovoltaic support and a preparation process of the high-weather-resistance steel pipe, and relates to the technical field of steel pipes. According to the scheme, chemical components of a pipe blank are controlled to comprise, by mass, 0.08%-0.10% of C, 0.50%-0.60% of Mn, 0.35%-0.38% of Si, 0.02%-0.03% of Al, 0.2%-0.25% of Cu, 0.5%-0.65% of Cr, 0.05%-0.08% of Ti, 0.05%-0.15% of Ni, 0.1%-0.15% of Mo, smaller than or equal to 0.006% of S, smaller than or equal to 0.015% of P and the balance Fe and inevitable impurities, a steel pipe base body with excellent mechanical performance is prepared by adjusting the using amount of the elements such as Mn, Si and Al, the machining performance of the steel pipe base body is good, the weather resistance is improved, and the steel pipe base body can be widely applied to preparation of outdoor photovoltaic supports.

The present invention belongs to the field of microwave absorbing materials, and particularly relates to a preparation method and application of a high-temperature radar absorbing coating doped with alumina. By doping alumina to modify CBS glass-ceramics, the present invention solves the problem of coating cracking caused by volume shrinkage due to crystallization during the heat treatment of CBS-based absorbing coatings prepared by traditional atmospheric plasma spraying, further improves the density of the coating, prevents the oxidation of Fe-based magnetic absorbents in high-temperature environments, enhances the high-temperature stability of the coating, and the alumina raw material is easily obtained; the preparation method of the present invention has simple process and is easy for industrial production, and has the advantages of lower density, wider radar absorption frequency band and strong antioxidant property compared with the same type of coatings, and can meet the stable use in an environment of 700 °C.

The invention relates of UV-Vis radiation curable coating compositions comprising magnetic or magnetizable pigment particles and methods for producing optical effect layers (OELs) comprising magnetically oriented magnetic or magnetizable pigment particles and the use of said OELs as anti-counterfeit means on security documents or security articles as well as decorative purposes. The UV-Vis radiation curable coating compositions comprises one or more (meth)acrylate monomers, one or more cyclic ether compounds, one or more vinyl ether compounds, one or more photoinitiators, one or more thermoplastic polymers and non-spherical magnetic or magnetisable pigment particles.

The present invention relates to an ink composition for printing highly conductive tracks for electronic applications, in which the conductive particles can be recovered by an environmentally friendly extraction process and reused in additional conductive ink compositions without further processing. Also provided are substrates containing printed current tracks formed from such compositions; substrates containing surface-mount electronic components adhered to the substrate by contact with an adhesive composition formed from such ink compositions; and substrates containing conductive coatings formed from such ink compositions, e.g., for use in induction sealing and / or to provide antibacterial coatings. Methods for forming such printed tracks, coated substrates, and / or methods for adhering surface-mount electronic components to substrates are also provided.

The invention relates to a magnetic paint composition comprising a first magnetic material and a second magnetic material, wherein the first and second magnetic materials are present in the magnetic paint composition in a mixed form. The first magnetic material has a first coercive field strength, and the second magnetic material has a second coercive field strength that differs from the first coercive field strength. The first and second magnetic materials are each low-coercive, or the first and second magnetic materials are each high-coercive. The invention further relates to a security element (10) comprising the magnetic paint composition and a security document (1) comprising the security element (10).

The invention provides a magnetic heating deicing material as well as a preparation method and deicing coating application thereof. The magnetic heating deicing material comprises an inner core and a coating layer on the surface of the inner core, the inner core comprises an iron-manganese alloy doped with rare earth metal; the coating layer comprises reduced graphene oxide modified by an amino silane coupling agent. The magnetic heating deicing material has a low Curie point and can enable a magnetic heating deicing coating to rapidly increase the surface temperature in a low-temperature environment on one hand, and has excellent conductivity and can further increase the heating value of the coating on the other hand, so that the deicing effect is enhanced, the efficient deicing effect is achieved, and the service life of the coating is prolonged. And the magnetic heating deicing material can actively prevent the formation of an ice layer in a low-temperature environment, has dual functions of ice prevention and deicing, and can be prepared at low cost and in a large scale.

The invention relates to the field of coating materials, and discloses an electromagnetic induction coating material as well as a preparation method and application thereof. The preparation method comprises the following steps: carrying out surface modification on cellulose nanocrystals by using a silane coupling agent gamma-aminopropyltriethoxysilane to obtain modified cellulose nanocrystals, and generating magnetic nanoparticles Fe3O4 on the surface of carboxylated multilayer graphene oxide by using a hydrothermal method, the preparation method comprises the following steps: preparing a multi-layer graphene / Fe3O4 composite material, introducing a high-activity acyl chloride group on the surface of the multi-layer graphene / Fe3O4 composite material through acylating chlorination reaction, reacting with 2-amino-4, 6-dichloropyrimidine and acetamide to prepare modified multi-layer graphene, reacting the modified cellulose nanocrystal and the modified multi-layer graphene with a waterborne polyurethane prepolymer to obtain a modified polyurethane composite emulsion, and preparing the waterborne polyurethane composite emulsion into the waterborne polyurethane composite material. Metal powder, nano silicon dioxide and the modified polyurethane composite emulsion are mixed and subjected to ultrasonic treatment, and the electromagnetic induction coating material is obtained and can be widely applied to the surfaces of ceramic and glassware articles.

The invention belongs to the field of coatings, and particularly relates to a magnetic powder coating and a preparation method and application thereof, the magnetic powder coating comprises the following components by mass: 30-80 parts of soft magnetic powder, 16-69 parts of an adhesive, 0-20 parts of a filler, and 1-10 parts of an auxiliary agent; the adhesive comprises an organic adhesive and an inorganic adhesive; the mass ratio of the organic adhesive to the inorganic adhesive is 1: (4-20). The magnetic powder coating disclosed by the invention has excellent magnetic performance, has relatively good storage stability at high and low temperatures, and does not have the problems of deterioration and the like after three times of high and low temperature circulation; a paint film obtained through construction of the magnetic powder coating is smooth in surface, free of cracks, free of blistering, cracking, obvious powder falling and the like after being soaked in water for 48 h and excellent in water resistance and bonding performance.

The invention discloses a salvinia natans bionic coating based on a reusable thermosensitive softening template and deep pinning and a preparation method of the salvinia natans bionic coating. The coating is prepared from epoxy resin, ferroferric oxide nano particles, ferroferric oxide micro particles, ferroferric oxide particles modified by 3-aminopropyl triethoxy silane, corn starch, polyvinylpyrrolidone, octadecylamine, perfluorooctyltriethoxy silane and deionized water, and the ferroferric oxide particles are prepared from epoxy resin, ferroferric oxide nano particles, ferroferric oxide micro particles, 3-aminopropyl triethoxy silane modified ferroferric oxide particles, corn starch, polyvinylpyrrolidone, octadecylamine, perfluorooctyltriethoxy silane and deionized water. Preparing magnetic slurry from epoxy resin, a solvent and ferroferric oxide particles, and performing staged magnetic field curing; preparing a thermosensitive template with modified ferroferric oxide as an inner core and corn starch as a shell, and embedding the micro-bulge tips under thermosensitive and magnetic field conditions; and carrying out hydrophobization treatment under the protection of the template, and finally heating and ultrasonically recovering the template. The cost is reduced through a reusable template, the wettability gradient is kept stable through deep pinning, ordered distribution of particles is achieved through layered magnetic field regulation and control, the gas film coverage rate and stability are improved, and the method is suitable for ships, ocean engineering and antifouling protection.

The invention relates to the technical field of aviation enamel paint, and provides aviation high-performance enamel paint and a preparation method thereof.The aviation high-performance enamel paint is prepared from modified fluorocarbon resin, nano boron nitride grafted polysiloxane, zinc hexafluoroacetylacetonate, a zirconium phosphate silver-loaded antibacterial agent, bisphenol F epoxy resin, cerium oxide coated graphene and the like; wherein the modified fluorocarbon resin is a tetrafluoroethylene-perfluoroalkyl vinyl ether-maleic anhydride terpolymer. According to the preparation method, a special system is adopted, dynamic staged mixing is achieved through a lifting-rotating linkage stirring mechanism, and a driving motor drives a transmission rod to be matched with an arc-shaped piece, so that a stirring rod synchronously conducts lifting and rotating movement; and the stirring direction is controlled to reverse through meshing of the special-shaped groove and the driving rod, and a silver-loaded antibacterial agent pulse type reduction process is combined. The high-performance enamel paint for aviation is obviously improved in the aspects of salt mist resistance, adhesive force, antibacterial rate and thermal decomposition performance.

The invention provides a pavement marking material capable of enhancing perception, and relates to the technical field of road traffic marking. The pavement marking material capable of enhancing perception comprises 20-30% of C5 petroleum resin, 10-15% of hydrogenated rosin, 3-7% of composite wax, 45-60% of a magnetic composite material, 2-5% of a pigment filler, 0-10% of a filler and 0.5-2% of an antioxidant. The magnetic composite material comprises anisotropic neodymium iron boron magnetic powder and a soft magnetic material. A magnetic material is combined with the road marking, so that the road marking has magnetism, and after a vehicle is loaded with matched magnetic sensing equipment, the vehicle can stably and continuously recognize the road marking under any weather condition and road environment, and the lane keeping function of the vehicle is assisted.

To provide a semi-hard magnetic white powder having properties suitable for use as a security pigment, such as a magnetic powder contained in magnetic ink used in MICR.SOLUTION: Provided is a white powder having a titanium oxide film and a silver metal film disposed, in this order, on the surface of base particles formed from an alnico alloy that is a semi-hard magnet.SELECTED DRAWING: Figure 1

The invention relates to an anti-counterfeiting material and a preparation method thereof, in particular to a pre-coated ribbon with a magnetic effect and a preparation method and a printing method of the pre-coated ribbon. In order to overcome the defects that in the prior art, magnetic printing equipment is difficult to install and is difficult to flexibly adapt to different printing processes, the pre-coated ribbon with the magnetic effect comprises a base film and a plurality of coatings which are sequentially arranged on the base film, the multiple coatings comprise a bottom coating, a release layer, a magnetic coating, a first reinforcing coating and a back adhesive layer which are sequentially arranged from the position close to the base film, the bottom coating is used for improving the surface adhesive force of the base film, the release layer has the release and trimming effects, the magnetic coating is used for expressing the magnetic effect, and the first reinforcing coating is used for improving the surface adhesive force of the base film. The first reinforcing coating is used for reinforcing the connecting force between the magnetic coating and the back adhesive layer, and the back adhesive layer is used for being bonded with a printing stock during hot transfer printing; meanwhile, the invention further provides a preparation method and a printing method of the pre-coated colored tape with the magnetic effect.

The invention relates to a method (100) for producing a planar magnetized structure (1a) with two opposing sides (2a, 3a) of opposite magnetic polarity. It is proposed to roll or fold a magnetizable structure (1) in a specific manner before the magnetization process.

To provide magnetic particles (cobalt ferrite) having an average particle size of μm order and uniform particle size.SOLUTION: Cobalt ferrite magnetic particles are obtained by heat-treating a cobalt ferrite precursor in the presence of sulfite.SELECTED DRAWING: Figure 1

The application relates to the field of waterproof materials, and discloses a modified asphalt coating composition, a modified asphalt coating and a preparation method thereof, and a waterproof coiled material, wherein the composition contains a main agent and an auxiliary agent; the main agent comprises base asphalt, solvent oil with an aromatic hydrocarbon content of greater than or equal to 70 wt%, linear SBS, SBR, neodymium-iron-boron magnetic powder, cobalt borylate and styrene-indene resin; the content of the base asphalt is 40-55 wt% based on the total weight of the composition; the content of the solvent oil is 5-10 wt%; the content of the linear SBS is 3-5 wt%; and the content of the SBR is 3-5 wt%. The waterproof coiled material provided by the application is excellent in heat preservation, low-temperature resistance and deformation resistance and is suitable for metal roofs.

A deposition device may deposit, on a substrate, a binder layer that includes a first set of magnetic flakes and a second set of magnetic flakes and may cause, when a temperature of the binder layer satisfies a temperature threshold (e.g., a Curie temperature of the first set of magnetic flakes), a magnetic field to be applied to the binder layer to cause the first set of magnetic flakes and the second set of magnetic flakes to be oriented according to the magnetic field. The deposition device may cause, when the temperature of the binder layer ceases to satisfy the temperature threshold, another magnetic field to be applied to the binder layer to cause only the second set of magnetic flakes to be oriented according to the other magnetic field.

The invention relates to the technical field of paint preparation, in particular to an environment-friendly camouflage paint, a preparation system and an environment-friendly paint processing method, and solves the problems that an existing camouflage paint for camouflage is inconvenient to degrade in an environment-friendly manner during use, various ingredients are inconvenient to accurately distribute in the preparation process, and the cost is low. And mutual interference is easy to occur during paint output and cleaning. The environment-friendly camouflage paint comprises a component A and a component B, the weight part ratio of the component A to the component B is 7.5: 1, and the component A comprises the following components in parts by weight: 25-40 parts of polymer resin, 1-10 parts of organic silicon, 20-30 parts of pigment paste, 5-8 parts of a ferrite magnetic material, 10-40 parts of a benzene solvent and 3-8 parts of matting powder. According to the invention, the influence on the environment during degradation can be effectively avoided, various ingredients of the coating can be accurately distributed conveniently, and mutual interference during coating output and cleaning can be avoided.

The invention relates to the technical field of surface bionic micro-nano structures, in particular to a bionic rigid-elastic coupling microstructure anti-drag coating and a preparation method thereof. According to the preparation method of the bionic rigid-elastic coupling microstructure anti-drag coating, the hydrophobic property of polydimethylsiloxane (PDMS) and the inherent magnetic property of Fe3O4 or CIP are utilized, the bionic coating with the rigid-elastic coupling microstructure is prepared on a stainless steel substrate through a magnetic field induction method, and the bionic coating has good underwater self-adaptive anti-drag performance. When the surface of the coating is in a water flow environment, the surface is subjected to a certain water pressure, and the rigid-elastic coupling microstructure is subjected to self-adaptive deformation. Wherein elastic deformation can absorb a part of energy, the turbine effect of the microstructure can decompose a large turbine into small turbines, and the small turbines and the dynamic rigid-elastic coupling microstructure jointly act to cope with water flow changes and reduce resistance. And after the surface water pressure is reduced, the microstructure recovers to the original height, and meanwhile, a relatively low solid-liquid contact area is kept.

Carbonyl iron powder obtainable by a process comprising: Continuously performing a decompression treatment of carbonyl iron powder under a vacuum degassing atmosphere at a pressure of 50 Pa or less for 6 hours or longer; and Performing a vent to the atmosphere for a period of 1 hour or longer, until the pressure of the vacuum degassing atmosphere reaches an atmospheric pressure of 1.0 × 10 5 Pa reached.

The invention relates to the field of protecting security documents such as, for example, banknotes and identity documents from counterfeiting and illegal copying. Specifically, the present invention provides an apparatus and method for producing an optical effect layer (OEL) comprising a magnetic orientation that exhibits not only a dynamic movement, but also an attractive relief and / or 3D effect when tilted, and can be used as a security means on security documents or security articles or for decorative purposes.

Disclosed herein are a method of conducting in-situ frontal polymerisation of one or both of a thermoplastic resin precursor and a thermoset resin precursor, and a thermoplastic polymeric composite ma

The invention provides a self-supplementing lubricating coating with magnetic response as well as a preparation method and application of the self-supplementing lubricating coating. The self-supplementing lubricating coating comprises a lubricant storage layer used for storing a lubricant; the magnetic response deformation layer is positioned on the lubricant storage layer and is used for responding to external magnetic field stimulation to extrude the lubricant in the lubricant storage layer; the lubricating anti-scale layer is positioned on the magnetic response deformation layer and is used for stabilizing and spreading a lubricant which is transmitted to the surface of the lubricating anti-scale layer through an internal pore channel of the magnetic response deformation layer; the lubricant storage layer is made of a porous polymer material, the magnetic response deformation layer is a polysiloxane elastomer doped with magnetic particles, and the lubricating anti-scaling layer is of a hydrophobic rough micro-nano structure; the magnetic response deformation layer has a taper hole array structure. The self-supplementing lubricating coating can deform under the stimulation of an external magnetic field, so that a lubricant stored in the coating is slowly released, and the long-term efficient scale prevention of the lubricating coating in a complex fluid environment is realized.

The invention relates to an insulating electrostatic encapsulating material based on high-conductivity ferrite and a preparation method of the insulating electrostatic encapsulating material. Relates to the field of insulating materials. The encapsulating material comprises the following components in parts by weight: 60-100 parts of bisphenol A epoxy resin; 13-20 parts of a curing agent; 14 to 20 parts of aluminum oxide; 0.5 to 1.5 parts of a leveling agent; 0.2 to 0.8 part of benzoin; 3-6 parts of silica powder; 1-2 parts of pigment; and 20 to 30 parts of MnFe2O4 (at) ZIF-8 particles. Ferrite particles are introduced, the ferrite particles have a magnetic core and an insulating shell, the problem that a traditional magnetic filler in an epoxy resin matrix destroys insulativity is effectively avoided, meanwhile, the dispersity of the filler is improved through interface modification of a metal organic framework ZIF-8, and the material is a novel encapsulating material with insulating and electromagnetic functions; the packaging material is effectively suitable for packaging electronic components which need insulation, weather resistance and electromagnetic shielding.