135results about How to "High coating hardness" patented technology

The invention discloses thermosetting high temperature resisting printing ink for a touch screen as well as a preparation method of the printing ink. The formula of the printing ink comprises the following raw materials in parts by weight: 55-65 parts of modified organic silicon resin, 20-30 parts of titanium dioxide, 5-15 parts of powder packing, 3-8 parts of a diluent, 0.5-1.4 parts of a dispersant, 0.1-0.3 part of a leveling agent, 0.05-0.1 part of a defoamer, 1-2 parts of a silane coupling agent and 2-5 parts of a curing agent. The preparation method comprises the following steps: mixing the modified organic silicon resin, a pigment, the powder packing, 0.35-0.95 part of the dispersant, 0.05-0.15 part of the leveling agent and 2-5.4 parts of the diluent to obtain a main agent; and adding the curing agent, the defoamer, the silane coupling agent as well as remaining leveling agent, dispersant and diluent into the main agent, and dispersing, filtering and discharging. The printing ink coating is high temperature- resisting in coating, excellent in color retention at a high temperature of 300 DEG C, good in adhesion to a base material, high in hardness, resistant to acetone wiping and resistant to ITO (Indium Tin Oxides) etching liquids.

A method for preparing a high-performance metal protection nanometer coating includes the following steps of: ball-milling diluter and nanometer oxide particles according to the weight ratio of 40-100:1 to obtain nanometer oxide suspension; measuring acrylic ester and remaining copolymerization monomers according to the weight ratio of 2-3:1 to obtain a mixed monomer, adding the nanometer oxide suspension accounting for 80 percent of the total weight of the mixed monomer and adding reaction additives to obtain a mixture which is stirred for 10min to obtain in-situ polymerization precursor liquid. Under nitrogen protection, 10 percent of the in-situ polymerization precursor liquid is added into a reaction container, within the reaction time of 1-8h, the rest 70-90 percent of the in-situ polymerization precursor liquid is dipped, and after the dripping is over, the temperature of the reaction system is raised to 90 DEG C and kept for 0.5-2h; and nanometer oxide-acrylics is obtained after adding pH regulator and stirring for 5-10min. With epoxy resin and assistant and the like added, the metal protection nanometer coating is prepared in a ball milling method.

The invention relates to a wear-resistant epoxy powder coating for a pipeline. The wear-resistant epoxy powder coating comprises the following components in percentage by weight: 35-60% of epoxy resin, 5-12% of phenolic curing agent, 1-10% of latent amine type curing agent, 0.1-2% of curing accelerator, 20-45% of filler, 0.5-1% of pigment, 0.5-1% of benzoin, 0.4-1% of leveling agent, 1-30% of additive resin and 0.5-1% of gas-phase silicon dioxide. The preparation steps are as follows: (1) weighing the raw materials except white carbon black, wherein the error does not exceed 0.1%; (2) mixing the raw materials by using a high-speed dispersing machine; (3) performing twin-screw melt extrusion; (4) tabletting; (5) crushing; (6) grinding; and (7) boxing the qualified 120-mesh epoxy powder coating. The coating provided by the invention is mainly based on an epoxy system, the curing accelerator and the additive resin are added to improve the crosslinking density and the hardness of a coat and further improve the wear resistance of the coat; and the performances of the coat can reach the requirements of American Preservers Association of Engineers 0394 after the coating is cured.

The present invention relates to heat transfer and energy saving technology, and is especially technology of modifying metal surface with functional coating and applying the modified metal surface in heat exchanger. The present invention features that paint is coated in the surface of heat exchanger and high temperature heat treated to resist corrosionú¼resist scale and raise heat efficiency. The coating contains fluoro resin in 60-70 wt%, adhesion promoting resin 20-25 wt%, heat conducting stuffing 5-10 wt%, and nanometer particle 0.5-3 wt%, and has thickness of 5-15 micron and thermal conductivity of 0.3-1.5 W/m.K. The coating makes condensed water in the heat exchange surface form drops with high heat conductance, and results in high anticorrosion and long service life of the coated heat exchanger.

The invention relates to a method adopting laser cladding to form an amorphous alloy coating on the surface of carbon steel, and as the laser cladding method is adopted on a laser welder, the carbon steel plate is intensified. The technical scheme comprises the following steps: sand blasting the surface of the carbon steel; preparing mixed powder of zirconium, nickel, aluminum and copper; cladding the surface of the carbon steel by utilizing a laser beam, and enabling the laser beam to perform all-directional irradiation along a locus curve set by a computer program; forming the amorphous alloy coating after amorphous alloy powder is fused and cured on the surface of the carbon steel. By the adoption of the method, the surface hardness, abrasion resistance and corrosion resistance of the carbon steel are greatly improved; compared with the performances before treatment, the surface hardness of the carbon steel is increased by four times, the abrasion resistance is increased by four times, and the corrosion resistance is increased by 1000%; the intensifying method has the advantages of advanced process, detailed and accurate data, short technological process and simplicity in realization, and is safe, stable and reliable; the cladding coating is solid and not easy to drop off; the method is ideal in intensifying the surface of the carbon steel.

The invention is based on a method for coating at least one wiper blade element (10) made of an elastomer material, in which first, the surface of the wiper blade element (10) is cleaned and activated by means of a plasma, and then in a CVD process, a coating material is brought into a plasma state and at least one protective coating (64) forms on the surface of the wiper blade element (10), where a high-frequency voltage is applied to the region of the wiper blade element (10) oriented away from the protective layer (64) by means of an electrode (56). The invention proposes that before being brought into a treatment chamber (32, 34, 36, 38, 40, 74), the wiper blade element (10) be cut to a useful length (66) from a profiled band and placed on an electrode plate (56) so that its wiper lip (18) stands approximately perpendicular to the electrode plate (56), which extends to both sides of the wiper blade element (10), and is subjected to a plasma flow (50). (FIG. 2)

The invention relates to an epoxy resin modified waterborne polyurethane flame retardant paint, which is prepared from the following components by weight percentage: 25-35wt% of a waterborne polyurethane emulsion, 20-28wt% of a flame retardant, 15-23wt% of alcohol, and 20-34wt% of deionized water. The waterborne polyurethane flame retardant paint provided by the invention has the advantages of high film hardness and good water resistance, long fire resistance period, small smoke amount, good flame retardancy, no toxicity and no harm.

The invention discloses an aqueous boron nitride coating capable of binding at a low temperature and being used at a high temperature. The coating is prepared from 15-60 wt% of hexagonal boron nitride, 2-15 wt% of a composite high temperature binder, 1 wt% of carboxymethyl cellulose, 0.5 wt% of a thickener, 1 wt% of cobalt aluminate, 0.2 wt% of isooctanol, and the balance is demineralized water. Apreparation method of the coating comprises the following steps: mixing and stirring carboxymethyl cellulose used as a dispersant, the high-temperature binder, the thickener, cobalt aluminate used asa high-temperature pigment and demineralized water at a normal temperature to form a uniform solution, adding the hexagonal boron nitride and isooctanol used as a defoamer to the solution, and performing stirring until a uniform system is formed. The coating adopts an aqueous system, has no harmful substance volatilization during use, is clean and environmentally friendly, has good adhesion, anddoes not crack or spall in order to effectively block direct contact between a metal melt and the surface of a refractory material. Additionally, the coating has excellent stability and suspension capacity, and the stability and the suspension capacity do not change under high dilution.

The invention discloses a waterproof coating for water-based paperboards and a preparation method thereof. The coating is mainly prepared from water, an acrylate emulsion, a paraffin emulsion, an epoxy resin, a film forming additive, a flatting agent and other additives. Through the compounding of the paraffin emulsion and the acrylate emulsion, the advantages of the two emulsions are integrated, so that the glossiness, adhesion, abrasion resistance and water repellency of the waterproof coating are maximally increased; due to the addition of the epoxy resin and a drier, the water repellency, coating hardness and surface drying time of the coating can be further improved; and the waterproof coating disclosed by the invention, as a water-based resin coating, is solvent-free, non-toxic, green and environment-friendly in the process of production, and therefore, the waterproof coating has important economical and social benefits.

The invention provides a conductive coating which comprises a bottom layer and a surface layer, wherein the bottom layer is prepared by components in parts by weight as follows: 70 parts of polytetrafluoroethylene emulsion, 6.8-7.1 parts of phosphoric acid, 6.8-7.2 parts of chromic acid, 0.7-1.0 part of lauryl sodium sulfate, 1.6-2.0 parts of chromium sesquioxide, 8-9 parts of water, 0.5-0.8 part of polyphenylene sulfide, 5-7.5 parts of graphite and 1-2.5 parts of conductive black; and the surface layer is prepared by components in parts by weight as follows: 90 parts of polytetrafluoroethylene emulsion, 0.7-0.9 part of lauryl sodium sulfate, 10-11 parts of water, 2-2.5 parts of polyphenylene sulfide, 5-7.5 parts of graphite and 1-3 parts of conductive black. The obtained conductive coating has a smooth surface and large adhesive force with a metal mold, and is high in hardness, difficult to scratch and good in conductivity; and the demolding effect is good after the metal mold is sprayed, and the quality of a finished product is guaranteed.

The invention discloses a CN-MCN superhard self-lubricating nano-composite coating and a preparation method thereof. An electric arc discharge method and a hollow cathode electric arc discharge carbon source combination method are adopted to generate a combination layer, a transition layer, a supporting layer and a lubricating layer to sequentially form the nano-composite coating. The preparation method has the advantages of being high in ionization rate, simple in coating device structure, high in deposition rate and the like. The prepared CN-MCN superhard self-lubricating nano-composite coating is high coating hardness, strong in adhesive power, good in self-lubricating property, high in coating growing speed and production efficiency, low in production cost and friction coefficient and good in coating toughness and can remarkably improve the abrasion-resisting and lubricating performance of processing cutters, dies and mechanical parts. In addition, the preparation method is simple, industrial production is easily achieved, and the CN-MCN superhard self-lubricating nano-composite coating has good application prospect.

The invention discloses a heat transfer printing powder coating used for an aluminum floor, and a preparation method and application of the heat transfer printing powder coating. The heat transfer printing powder coating used for the aluminum floor takes a terminal carboxyl polyester and terminal hydroxy polyester mixture as a film formation substance, and materials, including quartz powder, titanium dioxide, a modified polyether flatting agent, polytetrafluoroethylene, nylon copolymer, a coupling agent, a catalyst, an antioxygen and the like, are matched to be subjected to melt extrusion to prepare the powder coating. The heat transfer printing powder coating used for the aluminum floor is the powder coating which has the advantages of high hardness, high abrasive resistance and excellentmechanical performance, contamination resistance, water resistance and abrasion resistance, and can be widely applied to the field of aluminum floor coating.

The invention discloses an iron-based cored wire including an amorphous phase abrasion-resistant and corrosion-resistant coating prepared by utilizing electric arc spraying and a preparation method for the coating, and belongs to the field of the thermal spraying in the material processing engineering. Steel band materials for manufacturing a wire casing are stainless steel bands, and the filling rate of the cored wire is from 32% to 34%. The cored wire comprises the following elements in percentage by atoms: 15 to 26 at.% of Cr, 4 to 14 at.% of P, 9 to 18 at.% of Si and 2 to 4 at.% of C. The preparation method for the coating comprises the steps as follows: pre-grinding a matrix surface by using 180 meshes of sand paper and carrying out a blasting treatment on the matrix surface by using 60 meshes of brown aluminium oxide, thereby obtain the cored wire; and preparing the coating by using the electric arc spraying process, wherein the voltage in the spraying process is from 25V to 34V, the current is from 180A to 220A, the spraying distance is from 190mm to 210mm, and the compressed air pressure is from 0.4 Mpa to 0.6 Mpa. The prepared amorphous phase coating has the characteristics high hardness, good abrasion-resistant and corrosion-resistant performance and excellent mechanical performance.

The invention discloses a modified pure acrylic emulsion and a preparation method thereof. The emulsion comprises the following components by mass percent: 42-56% of water, 1-3% of propylene glycol, 20-30% of methyl methacrylate, 15-25% of butyl acrylate, 0.8-1.2% of methacrylic acid, 1.0-1.4% of emulsifier OP-10, 1.2-1.6% of sodium dodecyl benzene sulfonate, 0.4-0.6% of sodium bicarbonate, 0.4-0.6% of potassium persulfate, 0.23-0.66% of nano ZrO2, 0.5-1.2% of ammonia water and 0.04-0.17% of mixture of silane coupling agent and oleic acid (5:1). The nano ZrO2 modified pure acrylic emulsion has the advantages of environment friendliness, aging resistance, washability, water resistance, alkali resistance, good emulsion stability, high film hardness and the like.

A solvent-free UV resin and application thereof belong to the technical field of environment-friendly paints. The solvent-free UV resin is composed of, by weight percentage, 20-40% low-viscosity oligomer, 10-20% of bifunctional active diluent, 10-20% of trifunctional active diluent, 20-40% of UV curing hyperbranched polyfunctional monomer, 0.1-0.8% of flatting agent and 2-10% of photoinitiator. The solvent-free UV resin can solve the problem VOC (volatile organic compounds) led by toxic organic solvent in UV curing paints.

The invention belongs to the technical field of wear-resistant coating materials, and in particular relates to a cobalt-based spraying powder for aero-engine wear-resistant parts, and also relates to a method for preparing the above-mentioned spraying powder. The composition and weight percentage of the spray powder are: chromium: 20%~30%; nickel: 7%~15%; tungsten: 5%~12%; carbon: 0.1%~1%; cobalt: 45%~65% %; the particle size range of the above spray powder is 5 μm to 45 μm; the coating obtained by using the spray powder is suitable for working at high temperature, and has excellent anti-abrasive wear, hard surface wear, fretting wear and particle erosion wear performance ;After spraying, the bonding strength is high, and it is not easy to fall off; after spraying, the coating has a uniform texture, smooth surface, no delamination and cracks; at the same time, the cobalt content in the material determines that the coating is an excellent anti-oxidation coating; in addition , the powder coating also has good coating grinding and polishing properties and high coating hardness, and can be widely used in the application of engine parts.

The present invention is electrogalvanized steel plate and steel plate electrogalvanizing process. The electrogalvanized steel plate has electrogalvanized layer containing tin in 15-8000 ppm. The steel plate electrogalvanizing process includes the steps of defatting the steel plate, pickling treatment and electrogalvanizing, and features the electrogalvanizing solution containing Sn2+ in 1-500 ppm. Adding small amount of Sn2+ into the electrogalvanizing solution can alter the structure of the electrogalvanized layer and electrogalvanized layer containing tin in 15-8000 ppm has greatly raised, 2 times or higher raised, hardness.

The invention relates to a middle-high temperature thermoelectric module. The middle-high temperature thermoelectric module comprises at least one group of thermoelectric pair, wherein the thermoelectric pair comprises two thermoelectric blocks connected through an insulating supporting plate; an electrode formed on a high temperature end surface of the thermoelectric pair; a diffusion blocking protection layer formed at least on the surface of the thermoelectric pair and/or the surfaces of the two thermoelectric blocks; an anti-oxidation layer formed at least on the surface of the thermoelectric pair and/or the surfaces of the two thermoelectric blocks; and an aerogel thermal insulation layer filling a gap of the at least one group of thermoelectric pair. The thermoelectric module provided by the invention simultaneously has the performance of sublimation prevention, anti-oxidation, heat insulation and the like, and the thermoelectric performance and the efficiency of the thermoelectric module are improved; in addition, the thermoelectric module has a self-protection function when working under conditions relating to corrosive gas, moist, chemical medium corrosion, temperature cold-hot alternation and the like.

The invention belongs to the field of epoxy resin coatings and particularly relates to a water-based flame-retardant epoxy resin coating. The water-based flame-retardant epoxy resin coating is prepared from a component A, a component B and a component C in a mass ratio being 5:1:1, wherein the component A is prepared from raw materials in parts by weight as follows: 90-100 parts of bisphenol A epoxy resin, 10-20 parts of polyoxyethylene alkyl ester and 10-25 parts of polyacrylic ester; the component B is prepared from raw materials in parts by weight as follows: 20-25 parts of triethylene tetramine, 3-5 parts of titanium dioxide, 8-10 parts of pigments, 100-110 parts of talcum powder and 30-40 parts of water; the component C is prepared from raw materials in parts by weight as follows: 1-3.2 parts of a wetting dispersant, 1.2-1.6 parts of a defoaming agent, 1.2-1.8 parts of a flatting agent, 15-20 parts of a phosphorus-nitrogen composite flame retardant, 5-6 parts of a hypophosphite flame retardant and 5-6 parts of phosphate. The epoxy resin coating has the advantages of being environment-friendly, high in film hardness, high in anti-impact strength, good in glossiness, good in flame retardance and the like.