236results about How to "Coating stability" patented technology

Novel methods and compositions for coating target surfaces with non-entangled multi-wall carbon nanotubes are disclosed. In one aspect, the methods and compositions of the invention comprise dispersion of non-entangled multi-wall carbon nanotubes in solvent, and application of the non-entangled multi-wall carbon nanotube/solvent mixture to a surface by spraying. In another aspect, the methods and compositions of the invention comprise dispersion of non-entangled multi-wall carbon nanotubes in solvent, and applying the nanotube/solvent mixture to a suitable matrix by spraying to form a surface coating which is substantially contiguous with the surface of the matrix. The compositions of the invention are substantially free of metal oxides and sulfur, and do not require harsh oxidative treatments.

The present invention provides a powdery composite precursor, which comprises a core of a lithium transition metal oxide, and an aluminum hydroxide-based precipitate layer coated on the surface of the core, and a process to prepare the composite precursor. The preparation process comprises the formation of a water based slurry by dispersing lithium transition metal oxide powder in water, and a precipitation reaction of an aluminum salt solution with a base solution where the lithium transition metal particles act as seed particles, whereby a mechanically stable precipitate layer of homogeneous thickness can be achieved. The composite precursor can be converted into aluminum-containing, e.g., aluminum-doped, lithium transition metal oxide suitable for a cathode active material of lithium rechargeable battery by heat treatment.

The invention discloses an aqueous PU fog face rubbing surface treatment agent for synthetic leather, comprising the following components by weight percentage: 40-50% of aqueous polyurethane resin, 30-40% of water, 3-6% of matting agent, 1-5% of organic silicon antifoaming agent, 0.5-5% of organic silicon flatting agent and 0.5-5% of aqueous polyurethane thickener. The surface treatment agent provided by the invention takes water as solvent which replaces poisonous solvents such as dimethylformamide and butanone and has the performances of non-combustion, safety, environmental protection and less cost; after being treated by the surface treatment agent provided by the invention in a wiping manner, the prepared leather has good fog face rubbing effect, sharp contrast between colours of a surface layer and a rubbing layer, good visual effect and excellent general effect.

The invention discloses an aqueous PU velvet resin used for synthetic leather, which comprises the following raw materials by weight percent: 40-50% of aqueous polyurethane resin, 40-50% of water, 2-5% of low-temperature sheep bar powder, 2-4% of silicon dioxide velvet powder, 1-3% of organic silicone oil smoothing agent, 1-4% of extinction powder, 0.5-1% of organic silicon flatting agent, 2-5% of organic silicon antifoaming agent and 0.5-2% of aqueous polyurethane thickening agent. The aqueous PU velvet resin used for synthetic leather of the invention takes water as solvent to replace toxic solvent, such as dimethyl fomamide, butanone and the like and has the advantages of being non-combustible, safe and environment-friendly, saving cost and the like. The aqueous PU velvet resin also has the advantages of good film-forming resistance, firm bonding, coating solvent resistance, cold resistance, hydrolysis resistance and heat-proof aging. Products fabricated by using the resin have the characteristics of plump feel, unique velvet effect, strong real leather quality, fine and smooth texture, good air permeability and the like.

A nonaqueous electrolyte secondary battery comprising a negative electrode constituted of a carbonaceous material permitting reversible insertion and desorption of lithium, a positive electrode permitting reversible insertion and desorption of lithium, a separator separating these positive electrode and negative electrode from each other and a nonaqueous electrolyte composed of an organic solvent and, dissolved therein, a solute of lithium salt, wherein the nonaqueous electrolyte contains vinylene carbonate and di(2-propynyl) oxalate, these vinylene carbonate and di(2-propynyl) oxalate added in an amount of 0.1 to 3.0% by mass and 0.1 to 2.0% by mass, respectively, based on the mass of the nonaqueous electrolyte. Thus, there can be provided a nonaqueous electrolyte secondary battery wherein a stable SEI surface coating is formed to thereby exhibit a large initial capacity and excel in cycle characteristics at high temperature and wherein any cell swelling is slight.

The invention involves environmental protect technology field, particularly a rare earth compound oxide covering load Pd catalyst preparation method used for organic waste gas treatment. The invention aims at: because the covering of the existing honeycomb ceramics carrier catalyst is easy to reacting with carrier or adjuvant and generating spinel compounds and the covering is easy to drop, the method provides a preparation method which preparation art is simple, does not generate harmful substances in the preparation process, covering has strong adsorption capacity to Pd and is combine with honeycomb ceramics carrier firmly. The preparation method is: adding organic acid or ethandiol or mixture of said both into certain amount of the third and fourth subgroup metal oxide or hydroxide and mixing uniformly and preparing the covering liquid, immersing the honeycomb ceramics carrier into covering liquid and getting it out, then airing, drying and roasting it to preparing the carrier with covering; then immersing the carrier with covering into prepared H2PdCl4 solution, preparing the accelerant after drying and roasting.

An energy beam assisted solid-state welding welds a wire material to a substrate. A wire of coating or repairing material is placed in contact with a surface or surfaces of a substrate. A beam is directed into an outer flat surface of the wire, which heats the wire through flat outer surface of the wire with beam energy. Beam energy produces compression stress-waves that drive molecules of the material flat wire into a surface of the substrate, joining the material and the substrate with strong wave shaped interfaces.

It has been discovered that finely ground elemental graphite enhances the electrical conductivity of a coating when added to conductive amorphous carbon, using any one of several different binders in formulating the coating. The coating can be energized with electrical energy creating an electrical resistance heat element. Such combination of amorphous carbon and elemental graphite particles, ranging in size from about 0.001 to less than 1 micron, creates a more uniform conductive coating compared to use of larger sized particles, where the amount of conductive particles ranges from about 5 to about 80 weight-% based on the non-volatile solids content of the coating formulation (e.g., without solvent and other components that evolve (are driven off) from the coating during drying).

The invention discloses a preparation method for an SCR catalyst for purifying oxynitride in motor vehicle exhaust .The preparation method includes the steps of preparation of an SSZ-13 molecular sieve, preparation of a Cu-SSZ-13 catalyst and preparation of an integrated SCR catalyst .The preparation method is simple, production cost is lowered, SSZ-13 crystallization time is short, crystallization is relatively pure, HN3-SCR catalytic activity is high, and the purification rate of oxynitride in motor vehicle exhaust is high.

The invention provides a photochromic nail polish which comprises the following components in parts by weight: 5-10 parts of ethyl acetate, 15-20 parts of butyl acetate, 10-15 parts of nitrocellulose, 3-5 parts of resins, 0-5 parts of pigment, 0.1-1.5 parts of essence, 3-5.5 parts of anti-settling agent, and 0.5-10 parts of microencapsulated photochromic powder. The photochromic nail polish provided by the invention has the advantages and beneficial effects that because a photochromic compound is added, the photochromic nail polish can be changed into different colors in the sun so as to generate a novel and peculiar effect; and a photochromic material is processed by using a microencapsulated processing method, so that the photochromic nail polish is better in dispersity, the obtained color is more uniform, and the photochromic nail polish is firmer after being coated on nails; and the essence in the photochromic nail polish provided by the invention is selected from plant essence, and the other materials are all benzene-free, methanol-free and formaldehyde-free materials, therefore, the photochromic nail polish is non-toxic, environment-friendly and healthful.

The invention discloses a water-based PU brush surface conditioning agent for synthetic leather, which comprises the following materials by weight percent: 10 to 20 percent of water-based stoving varnish resin, 1 to 6 percent of water-based polyurethane, 60 to 70 percent of water, 5 to 13 percent of silicon dioxide matting agent, 0.5 to 2 percent of organic silicon flatting agent, 1 to 5 percent of organic silicon foam killer and 2 to 6 percent of water-based modified polyethylene wax emulsion. In the water-based PU brush surface conditioning agent for synthetic leather, water is taken as solvent to replace noxious solvents, such as dimethyl formamide and butanone, so that the water-based PU brush surface conditioning agent has the performances of non-inflammation, safety, environmental protection and cost saving, and resin has the advantages of good film reforming property, firm bonding, solvent resistance, cold resistance, hydrolysis resistance and thermosenescence resistance of coating, and the finished product made of the surface conditioning agent has unique brush effect, strong dermis effect, water resistance and good air permeability.

The present invention relates to a method for preparing magnesium casting coating; 0.7 percent of paligorskite clay that is configured with 17 percent of water is milled for 3 hours to be made into solution A; secondly 5 percent of talcum powder, 3 percent of diatomite, 0.5 percent of KBF4 and 1 percent of aluminium phosphate are put into a spherical mill, and is respectively mixed with solution A, 3 percent of silica sol and 67.6 percent of water to be milled for 3 hours to obtain the magnesium alloy metal-typed casting coating; metal mould is heated to be about 200 DEG C, and then is sprayed with a layer of magnesium alloy casting coating on the surface, and is dried finally. The method of the present invention has the advantages of strong heat preservation, flame retardant performance, sticking performance and coating performance, favorable suspension performance and less heat fracture of the casting piece. Oxidation is prevented, so the surface is bright and smooth and is free from oxidized wrinkle.

A toner for electrostatic latent image development of the present invention includes toner particles containing toner mother particles and an external additive. The external additive contains fatty acid metal salt particles, and a volume based particle diameter (size) distribution of the fatty acid metal salt particles has two peaks on a side of smaller size and a side of larger size, respectively. A volume based mean particle diameter of the fatty acid metal salt particles having the peak on the side of smaller size is 3.0 μm or smaller and a volume based mean particle diameter of the fatty acid metal salt particles having the peak on the side of larger size is larger than a volume based mean particle diameter of the toner mother particles.

The invention discloses a super-hydrophilic coating using organic polysilazane as an anchor molecule and a preparation method thereof. The preparation method includes the steps that a preliminarily prepared organic polysilazane solution is adopted to coat the surface of a base material to form an organic polysilazane coating through a coating method; after a solvent evaporates, modified inorganicnanoparticles with reactive carbon-carbon double bonds on the surfaces are used for coating the surface, on which organic polysilazane is attached, of the base material, and through heat treatment, anorganic polysilazane/inorganic nanoparticle composite coating with reaction activity is obtained; betaine-type zwitterionic compounds with carbon-carbon double bonds are grafted onto the inorganic nanoparticles on the surface of the composite coating, and then hydrophilic modification is achieved. The water contact angle of the surface of the prepared hydrophilic modified coating is smaller than10 degrees, so that the super-hydrophilic coating has super-hydrophilic characteristics, and the coating and the surface of the base material have excellent attachment characteristics. The super-hydrophilic coating has good application effects of frogging prevention, self-cleaning, adhesion resistance of ships and underwater facility and the like.

In the present invention a sub-stoichiometric ceramic ZnO_x:Al target, with 0.3<x<1, is used for depositing a ZnO:Al layer in a reactive sputtering process. The process is carried out in an Ar/O₂ atmosphere. The diagram depicts the deposition rate R depending on the oxygen flow in a sputtering process according to the present invention compared with a conventional sputter process using a stoichiometric ZnO target. The upper line x<1 indicates the deposition rate R when using the inventive target and process. The lower line x=1, for comparison only, indicates the deposition rate R when using a stoichiometric ceramic ZnO target. It can be seen from the diagram that both processes are quite stable as there are no steep slopes when varying the oxygen flow. However, the line x<1 is above the line x=1. Therefore, a working point P may be selected which has a higher deposition rate R than a corresponding working point P of a corresponding ceramic target. A higher deposition rate, however, entails a lower bombardment of the deposited layer with oxygen ions. Therefore, the quality of the ZnO:Al layer is improved as far as the conductivity and the etchability of the layer are concerned.

The invention discloses a stirring and filtering device for lithium battery paste. The stirring and filtering device comprises a main casing, through holes, supporting legs, a putting groove, a discharging pipe, a discharging valve, sliding rods, vibration motors, elastic springs, circular arc clamping plates, sealing blocks, a filtering plate, filtering holes, filtering screens, an electric motor, a rotating shaft, a discharging pipe, fixed frames, stirring rods and stirring blades. The stirring and filtering device for the lithium battery paste has the advantages of reasonable structure, novel design and convenience in discharging; dispersion uniformity of the lithium battery paste is improved; during discharging, the lithium battery paste is filtered so as to remove particles and impurities in the slurry, ensure uniform dispersion of the lithium battery paste and stable subsequent coating and improve the quality of a product; automatic stirring of the lithium battery paste is realized and better dispersion of the lithium battery paste is ensured; moreover, the sealing property of the bottom of the main casing is ensured, and the discharging of the lithium battery paste in the main casing is favorably controlled; the stirring and filtering device has higher practical value and is suitable for popularization and use.

The invention relates to the technical field of production equipment of edge bandings, in particular to an edge banding back-coating hot melt adhesive device, which comprises an unreeling device for giving off edge bandings, a melt adhesive coating device, a cooling device and a rolling device, wherein the back surfaces of the edge bandings are coated with hot melt adhesive through the melt adhesive coating device to made gummed edge bandings, the gummed edge bandings are cooled and solidified by the cooling device, the gummed edge bandings after being cooled and solidified are rolled by the rolling device, and the unreeling device, the melt adhesive coating device, the cooling device and the rolling device are orderly arranged. The edge banding back-coating hot melt adhesive device is an automatic device integrated with unreeling, melt adhesive coating, cooling, solidifying and rolling, is particularly suitable for thin edge bandings, the thickness of the thin edge bandings is between 0.2mm and 0.8mm, and is convenient to process the made gummed edge bandings. The coating speed is between 20m/s and 30m/s, the coating amount is from 130g/ square meter to 140g/ square meter, more than two edge bandings can be coated for one time, and the production efficiency is high.

The invention relates to a processing box, an image forming device using thereof and an image forming method. A image carrier gyres at prtermined speed to connect with the lubricant coating brush 17a of cleaning apparatus 17, which gyring with the same direction of the image carrier at the contacted location, lubricant is coated on surface of the image carrier. Speed of the lubricant coating brush 17a is set higher than photo-conductor drum 1 as the image carrier, comparing with the situation of the image carrier and ubricant coated parts gyre with the same speed, lubricant amounts of lubricant coated parts is less. The invention prevents increasing torque, generating banded stripe images, enables coated lubricant 17b uniformly on the photo-conductor drum 1, and avoid brush injuries and conjunctiva.