1851results about How to "Improve friction resistance" patented technology

The invention discloses a corrosion-resistant magnesium aluminum alloy chromium-free passivation solution, which comprises the following components: 10-40 parts of water-base resin, 1-10 parts of nanoparticle sol, 1-10 parts of fluoric-containing acid, 1-5 parts of fluoric acid-containing salt, 1-5 parts of a rare earth catalyst, 1-10 parts of a silane coupling agent, 1-5 parts of a corrosion inhibitor, 1-2 parts of a complexing agent and 40-70% of water. The corrosion-resistant magnesium aluminum alloy chromium-free passivation solution does not contain chromium and other toxic and harmful substances, meets the ROHS environmental protection law of the European Union, and meanwhile, can form an organic and inorganic composite passivation film and a thin film on the surface of a magnesium aluminum layer, and the formed composite passivation film has an excellent physical property and corrosion resistance, and has higher corrosion resistance and long salt fog time, so that the corrosion resistance of a magnesium aluminum alloy plate is better improved.

The invention discloses a method for preparing a wear-resisting super-hydrophobic coating through a cold spraying technology and a product of the method. The method comprises the following steps that firstly, the surface of a base body is roughened; secondly, sprayed powder is modified with low-surface-energy matter; and thirdly, the wear-resisting super-hydrophobic coating is prepared on the surface of the base body through the cold spraying technology. The static contact angle of the coating prepared through the method can be 150-180 degrees, the rolling angle of the coating is smaller than 10 degrees, and good super-hydrophobicity is achieved. According to the method, the product of a non-stick pan is prepared and has good wear resistance and non-stick performance, and compared with non-stick pans in the market, the product is more resistant to wear and has the great competitive potential in the field. In addition, the method can be used for preparing different wear-resisting super-hydrophobic coatings based on different base materials (such as metal, ceramic, glass and plastic), and the application range is wide.

The invention discloses a PP/PA composite material used for a corrugated pipe, which is prepared by processing polypropylene, nylon, compatilizer, toughening agent, filling master batch, light stabilizer, heat stabilizer and processing aid. The PP/PA composite material is prepared by feeding the components into mixing equipment according to a proportion, and melting, mixing, scattering, extruding and granulating the components at the temperature of between 210 and 280 DEG C. The PP/PA composite material not only has higher toughness, excellent high impact resistance and bending property and extremely good high temperature resistance, but also are excellent in the aspects of surface gloss, abrasion resistance, chemical corrosion resistance, electric insulation and the like, and solves the defect problems of insufficient heat resistance of the conventional PP corrugated pipe, over-high price of the PA corrugated pipe; and in addition, a preparation method for the PP/PA composite material is simple and meets the requirement of industrialized production.

The invention relates to a water-base printing ink and its producing method, especially water-base high light friction resistance gravure oil and the producing method thereof. The oil is suitable for packing print in the soft packing field such as food, drink, medicine, health products, chemicals and etc. The water-base high light friction resistance gravure oil is composed of acrylic resin, acrylic emulsion, dye, ethanol, built-up agent, dispersant, deionized water, water-base emulsifying wax, antifoamer, leveling agent. The inventive product completely meets the requirement of the gravure oil, has a reliable quality and can replace the solvent gravure oil, which can be dilute by the tap water of ethanol. The printing device can be washed directly by the tap water. The product has a high concentration, a low viscosity, a good printing adaptability has no harm to the environment and human body. The presswork has a clear pattern, a bright color, a powerful attached fastness, a good water resistance and friction resistance, has no harmful residue after drying and is not easy to fade and shed.

The present invention discloses one kind of heat resistant filter material and its use. The heat resistant filter material consists of one base material layer and one combined filter layers, the base material layer is made of inorganic fiber and/or heat resistant organic fiber, and at least one filter layer contains both inorganic fiber and heat resistant organic fiber, with the diameter of the inorganic fiber being smaller than that of the heat resistant organic fiber. The heat resistant filter material is used in filter. It has excellent complexing performance between the inorganic fiber and the heat resistant organic fiber, high dust collecting efficiency, high dust impact resistance, high antiwear performance, high heat shrinkage tolerance, etc.

The invention discloses a method for preparing porous silicon carbide ceramic, and relates to a method for preparing silicon carbide ceramic. The invention aims to solve the technical problems of low mechanical properties and low porosity of porous silicon carbide ceramic prepared through the existing method. The method comprises the following steps of 1, preparing pulp; 2, preparing a porous ceramic green body; 3, preparing a prefabricated body; 4, preparing carbon gel; 5, preparing a composite material of silicon carbide and the carbon gel; 6, preparing a composite material of porous silicon carbide and carbon aerogel; and 7, putting the composite material of the porous silicon carbide and the carbon aerogel and monatomic silicon powder into a sintering furnace to be sintered to obtain the porous silicon carbide ceramic. The porosity of the opening of the porous silicon carbide is 30-83 percent, the aperture size is 0.3-100m, and pore spaces can be uniformly distributed or directionally arranged. Through a three-point bending test, the bending strength of the finally prepared porous silicon carbide ceramic material with the porosity of 47.8 percent achieves 164.62 MPa.

The invention discloses a method for preparing a superhydrophobic coating by adopting a supersonic electric arc spaying process. The method comprises the following steps of: firstly, roughening the surface of a substrate; then preparing a coating on the surface of the substrate by adopting a supersonic electric arc spaying technique; and finally, modifying the surface of the coating with a substance with low surface energy, and drying to form a superhydrophobic surface. The method disclosed by the invention has the advantages of easy operation, low cost and good repeatability and is suitable for industrial production. In addition, the method can be used for preparing superhydrophobic coatings on a variety of surfaces such as metal surfaces, glass surfaces and tile surfaces, thus the scope of application of the superhydrophobic coating can be broadened, and large-scale production with high market value can be archived.

The invention discloses a mono-component varnish composition, which comprises at least a polymer having a hyper branched or dendritical structure; at least one type of hydroxyl acrylic resin or hydroxyl methacrylate resin; at least one type of organosilicon-modified acrylic resins; at least a crosslinking curing agent; at least an acid catalyst; at least a rheological control agent; at least an auxiliary agent and at least a solvent; and the mono-component varnish composition has the advantages of high scratch resistance and high weather resistance. The provided mono-component varnish composition can effectively increase the smoothness of the surface of a varnish composition film, and increases the rub resistance of the film; in addition, the introduction of the organosilicon-modified acrylic resin can further increase the weatherability of the varnish composition film.

A toner comprising a binder resin and a colorant, wherein the toner has a Martens hardness, as measured at a maximum load condition of 2.0×10⁻⁴ N, of from 200 MPa to 1,100 MPa.

The invention provides a concrete complex additive which comprises the following components by weight percent: 17.5-58.0% of efficient water reducing agent, 0.5-5.5% of organosilicon waterproofing agent, 0.2-2.5% of organosilicon reinforcing agent, 3.5-25% of polyacrylamide, 1.2-2.8% of triethanolamine, 3.2-6.3% of sodium nitrite, 0.3-1.2% of glycol, 0.6-1.3% of glycerol, 2.8-5.5% of sodium gluconate and the balance of water. The impact resistance, crocking resistance, impermeability and waterproofness of the concrete material can be obviously improved by using the complex additive provided by the application in the preparation process of the concrete, thus the concrete complex additives is especially suitable for the requirement on high-performance concrete for construction of airfield runways or highway bridges.

The invention discloses a dual-component aqueous polyurethane paint with scrawling resistance and pasting resistance, and a preparation method thereof. The dual-component aqueous polyurethane paint with scrawling resistance and pasting resistance is prepared by using aqueous hydroxy-containing polyacrylic resin dispersion and fatty group polyisocyanate as main film forming substances, adding organosilicon resin emulsion, deionized water, antifoaming agent, wetting agent, dispersant, pigment, dulling agent, wax emulsion and thickening agent and carrying out high speed disperse. The paint has characteristics of high crosslinking density, low surface tension, strong permeability resistance, good scratch resistance, substantial scrawling resistance and pasting resistance, excellent performances of low VOC content, high hardness, good weatherability, brushing resistance and chemical resistance, and is suitable for application fields of municipal public facility, building paint and terrace paint coating, etc.

The invention discloses a graphene-latex functional high-strength protection glove and a production method thereof. The method comprises the following steps: (1) immersing a glove blank in a coagulating agent, immersing the glove blank in a graphene-latex composite liquid, and drying the immersed glove blank to obtain the glove; or (2) immersing the glove blank in the coagulating agent, drying the immersed glove blank, immersing the dried glove blank in the graphene-latex composite liquid, leaching the immersed glove blank, crimping the leached glove blank, drying the crimped glove blank, vulcanizing the dried glove blank, leaching the vulcanized glove blank, and drying the leached glove blank to obtain the glove. Compared with gloves in the prior art, the graphene-latex functional high-strength protection glove produced in the invention fully performs the advantages of high electricity conductivity, high strength, friction resistance and strong bacteriostasis of graphene, and has wide uses in the fields of the manufacturing industry, the medical industry, the chemical engineering industry and the space flight and aviation industry.

The invention discloses nano-silica/polyacrylate organic and inorganic hybrid water-dispersible resin and a preparation method thereof. According to the method, a silane coupling agent is adopted to modify a methyl methacrylate dispersion liquid of silica at first, and then in-situ polymerization of the modified methyl methacrylate dispersion liquid of silica and acrylate monomers is carried out in a solvent. The nano-silica/polyacrylate organic and inorganic hybrid water-dispersible resin comprises the following ingredients in parts by mass: 20-40 parts of a solvent, 10-40 parts of a modified methyl methacrylate dispersion liquid of silica, 8-14 parts of acrylate monomers, 2-6 parts of acrylic acid, 0.15-0.5 part of an initiator, 1.5-5.5 parts of a pH regulator and 10-30 parts of deionized water. The water-dispersible resin is a pale yellow or pale yellow and slightly-blue semitransparent liquid, is favorable in storage stability, high in coating transparency and good in stain resistance and water resistance, the hardness can be 4H or above and the adhesion can be 1 grade.

The invention relates to a solar net plate, in particular to a polyimide solar net plate. The polyimide solar net plate comprises a net frame and a polyester wire net. The polyester wire net is tied to the bottom of the net frame. A silk screen printing hole is formed in the center of the polyester wire net, and the polyester wire net is in a concentric square shape. A stainless steel wire net anda polyimide film are further included. The polyimide film is fixed to the bottom face of the stainless steel wire net. A high-temperature glue layer is arranged between the polyimide film and the stainless steel wire net. The polyimide film is provided with a plurality of wire grooves, and a printing pattern is composed of the wire grooves. The top face of the stainless steel wire net is fixed tothe polyester wire net. The stainless steel wire net is larger than the silk screen printing hole and covers the silk screen printing hole, and a hot melt glue layer is arranged between the stainlesssteel wire net and the polyester wire net. The net plate manufacturing technology is simple, the manufacturing cost is low, the yield is high, the service life of the net plate is long, and frictionresistance and cross section sharpness are obviously improved; and the service life reaches 100,000 times or more, and the purchasing cost of printing net plates is reduced for battery piece manufacturers.

Provided are high viscosity essentially non-aqueous dispersions containing acrylic core/shell polymer particles in a non-aqueous solvent; sheetfed, heatset and coldset lithographic ink compositions containing the dispersions; and methods of printing with ink containing the dispersions to improve the setting and drying properties and rub resistance of sheet fed offset, heatset and coldset lithographic inks. The lithographic inks containing the dispersions set quickly enough to allow processing of printed sheets soon after printing.

The invention relates to a metal super-hydrophobic surface and a preparation method thereof. The preparation method comprises following two steps: firstly, electroplating method is adopted, traditional Watts electroplate liquid is taken as a base electroplate liquid, conductive metal base materials such as stainless steel, copper, aluminium alloy, and magnesium aluminum alloy, are taken as a negative electrode, and copper sheets are taken as a positive electrode so as to prepare a nickel coating layer; and secondly, an obtained electroplated surface and an ethanol solution containing fluorosilane are delivered into a heating furnace for heat treatment, and an obtained sample is subjected to washing and blow drying so as to obtain the surface with super-hydrophobicity on metal workpieces. The preparation method of the metal super-hydrophobic surface is simple; cost is low; and the preparation method is convenient for industrialized application. Contact angle of the obtained metal super-hydrophobic surface is more than 155 DEG, and rolling angel is less than 10 DEG; the metal super-hydrophobic surface possesses excellent super hydrophobicity, self-cleaning performance, wear resistance, and corrosion resistance; the preparation method is suitable for obtaining the metal super-hydrophobic surfaces with super hydrophobicity, self-cleaning performance, wear resistance, and corrosion resistance on the surfaces of a plurality of metal base materials with complex shapes and large area.

The invention discloses a single-component, high-solid-content and low-volatility organic compound (VOC) and environment-friendly type varnish composition. The varnish composition comprises at least one polymer with a hyper-branched or tree-shaped structure, at least one hydroxyl acrylic resin or hydroxyl methacrylic resin, at least one cross-linking curing agent, at least one acid catalyst, at least one rheology control agent and at least one auxiliary agent. With the adoption of the varnish composition and application of the varnish composition, disclosed by the invention, the viscosity of a varnish coating system can be effectively reduced, and the solid content of the construction can be easily improved to be 58 percent or above; construction VOC emission is reduced to be smaller than or equal to 420g/L; varnish film shrinkage caused in a curing process can also be effectively reduced and a cured multi-coating varnish film has better appearance effect; particularly, the effect in a wet-on-wet process, a three-coating and one-drying process of curing three coatings together or an IPP system of primers, paints and varnishes is obvious.

The invention belongs to the technical field of fine chemical engineering polymer materials, and specifically relates to nano-graphene loaded wax liquor, and a preparation method and a use thereof. The wax liquor is a wax dispersion which is formed by loading ultrafine nano-graphene particles having the particle size in the range from 20 to 40 nm on wax particles having the particle size in the range from 200 to 800 nm; and the total solid content of the wax liquor is 15-25%. The preparation method provided by the invention is used for successfully solving the dispersion and aggregation problems of graphene while being used for a paint or an ink body; and the nano-graphene loaded wax liquor prepared by the preparation method is used for paint, ink or leather finishing, and has the effects of rub resistance, static resistance and electromagnetic wave blocking.

A process for preparing a hydrophobic solution and a hydrophobic glass used for the windscreen of car is disclosed. Said hydrophobic solution is prepared from CF3(CF2)5C2H4Si(OC2H5)3, Si(OC2H5)4, C2H5OH, deionized water, and hydrochloric acid through proportional mixing, and stirring for 5-20 hr. Said hydrophobic glass is prepared through cleaning glass, preparing said hydrophobic solution, coating it on the surface of glass, and solidifying at 250-350 deg.C for 10 min -72 hr to form a firm hydrophobic film.

The present invention discloses a graphene-modified building coating material, which comprises a solvent, a commonly used additive and a main film forming substance, and further comprises graphene for modification, wherein the amount of the added graphene is 0.001-20% of the weight of the building coating material, the building coating material can further be added with the auxiliary additive, and the amount of the added auxiliary additive is 0-8% of the weight of the building coating material. According to the present invention, graphene is added to the existing building coating material so as to modify the water resistance mechanical strength of the building coating material and increase adhesion of the building coating material and the substrate, the contrast ratio and the scrubbing resistance; the bamboo carbon fibers are added to the building coating material so as to provide effects of bacterial inhibition, antibacterial and anti-ultraviolet light, such that the building coating material has the characteristic of green environmental protection; and the bone glue is added to the building coating material so as to improve bonding property and increase adhesion.