1618results about How to "High hardness" patented technology

The present invention provides immediate release pharmaceutical compositions for oral administration that are resistant to abuse by intake of alcohol.

The invention relates the high entropy alloy binding agent and hard alloy sintered by multicarbide and preparing method, comprising the following steps: clinkering polyhydric high entropy alloy powder binding phase and multicarbide, the binding phase comprising 5-10 kinds metallic elements, every kind of whose content is between 5%-30%; the multicarbide hand base comprises 2-4 super hand carbides, every kind of whose content is between 5%-90%. The invention has the advantages of high hand, high tenacity and high fire-resisting property.

The invention relates to an aqueous concrete seal hardener and a preparation method thereof in the technical field of building materials. The aqueous concrete seal hardener comprises the following ingredients by mass percentage: 30-40 percent of silicon sol, 0.25-3.0 percent of catalyst, 0.1-0.5 percent of surface active agent, 1-5 percent of potassium methyl silicate and 53.0-66.75 percent of deionized water. In the invention, the aqueous concrete seal hardener can be directly sprayed on the surface of the concrete for construction without pollution; the aqueous concrete seal hardener has strong abrasive resistance, the hardness of the concrete is greatly improved, and the aqueous concrete seal hardener has the characteristics of high sealing property, strong water repellency and dust-proofing performance, hydrolysis is carried out by potassium methyl silicate in the hardener on the surface of the concrete and inside the concrete after permeation, so as to form a membrane with hydrophobic nature and realize the water-repellency and dust-proofing performance; the action of the aqueous concrete seal hardener is durable, and the surface of the concrete has waxing-like luster after the concrete is used for a long time.

A perimeter weighted golf ball with a low compression core is provided. The core preferably comprises a diene polymer that has low cross-link density or not cross-linked with a reactive co-agent. This core has low compression and low specific gravity. The low specific gravity core is encased within a thin dense layer positioned outside of the centroid radius to provide the ball with a high moment of inertia. The same core can be encased within a plurality of intermediate layers having either increasing hardness or decreasing hardness to provide selective golf balls for either low swing speed players or advanced players. Alternatively, a thin layer of diene polymer highly cross-linked with reactive a co-agent may be incorporated into the ball to increase the hardness of the ball.

To provide a press-fit terminal with excellent connection reliability of which a plating surface is not scraped off when press-fitted into a through hole of a circuit board.

Manufacture of the press-fit terminal for inserting into the conductive through hole of the circuit board includes the steps of forming an underplating layer including one or more plating layers on a surface of a terminal base of a connecting part of the press-fit terminal which comes into electrical contact with the through hole, forming an Sn plating layer on the top plating layer, and after the step of forming the Sn plating layer, conducting a reflow process of performing heat treatment to form an alloy layer of Sn and an underplating metal of the top plating layer on the underplating layer as well as make unalloyed Sn mixed in an outside layer of the alloy layer.

The invention relates to a novel high-performance WC-based hard alloy material and a preparation method thereof, and belongs to high-technology structural ceramics and the application field thereof. The high-performance WC-based hard alloy material in the invention takes 20 to 80 mass percent of submicron/nanometer WC powder as a matrix, 2 to 20 mass percent of metal Mo and metal Ni which have high chemical stability at a high temperature and rare earth as a binder, is added with 0.1 to 5.0 mass percent of crystal particle inhibitor, 10 to 80 mass percent of high-hardness material diamond or cubic boron nitride micro-powder as a hardening agent, and 0.5 to 15 mass percent of SiC nanostructure and the like as a toughing agent, and is prepared by fast sintering technology, in particular by discharge plasma sintering or medium frequency induction heating sintering. A sintered body has the characteristics of fine crystal particles, high hardness, strength and flexibility and high comprehensive abrasive resistance, is particularly suitable for preparing geological drilling machines and tools used under heavy load conditions, and also can be used for preparing high-performance machined cutting tools, moulds and the like.

The invention discloses a waterborne two-component woodware coating and a preparation method thereof. The waterborne two-component woodware coating is prepared from main agent A and curing agent B. The main agent A comprises high-hydroxyl-value acrylic emulsion, low-hydroxyl-value acrylic emulsion, an aqueous polyurethane dispersion, a film forming auxiliary, a moistening agent, a leveling agent, an antifoaming agent, wax, extinction powder, a thickening agent, a preservative and deionized water, and the curing agent B comprises waterborne isocyanate and a solvent. The waterborne two-component woodware coating uses hydroxyl acrylic and the aqueous polyurethane dispersion as main film forming matters, the waterborne isocyanate serves as a cross-linking agent, the extinction powder and a wax auxiliary are added, curing reaction is performed at the normal temperature, and the coating has the advantages of high hardness, excellent chemical resistance, good scratch resistance, better transparence and simple, economical and reasonable production process, and can be widely applied to products such as wooden furniture and doors and windows.

The electrolysis solution for electrolytic ceramic coating includes water, a water-soluble zirconium compound, a complexing agent, carbonate ion, and at least one member selected from the group consisting of an alkali metal ion, ammonium ion and an organic alkali. Te zirconium compound is included at a concentration (X) in terms of zirconium of 0.0001 to 1 mol/L, the complexing agent is included at a concentration (Y) of 0.0001 to 0.3 mol/L, the carbonate ion is included at a concentration (Z) of 0.0002 to 4 mol/L, a ratio of the concentration (Y) of the complexing agent to the concentration (X) in terms of zirconium (Y/X) is at least 0.01, a ratio of the concentration (Z) of the carbonate ion to the concentration (X) in terms of zirconium (Z/X) is at least 2.5, and the electrolysis solution has an electrical conductivity of 0.2 to 20 S/m.

The invention provides a bismuth bronze-steel composite bimetal bearing material and a manufacturing method thereof, and in particular relates to a bismuth bronze-steel composite bimetal bearing material formed by sintering a bismuth bronze alloy on the surface of a carbon steel material and a manufacturing method thereof. The bismuth bronze-steel composite bimetal bearing material has a laminated structure, the base layer is the carbon steel material, the surface is the bismuth bronze alloy, and the bismuth bronze alloy is sintered on the surface of the bismuth bronze alloy material. The method for manufacturing the bismuth bronze-steel composite bimetal bearing material adopts the powder metallurgy sintering method principle to sinter the bismuth bronze alloy on the surface of the bismuth bronze alloy so as to form the bismuth bronze-steel composite bimetal bearing material.

The invention discloses an environmentally-friendly organic inorganic hybridized paint and preparation method and application thereof. The preparation method includes that acrylosilane microemulsion is taken as binder, 2-35 parts of acrylosilane microemulsion containing hydroxyl is dissolved into 10-80 parts of alcohols solvent, 1-15 parts of tetraethoxysilane, 2-30 parts of organosiloxane and 0.5-10 parts of basic catalyst are added, hydrolysis and polycondensation are carried out in organic polymer emulsion to form hydrophobic inorganic network, so as to obtain organic inorganic hybridized acrylosilane paint. The paint is coated on the surface of water poly(methyl) acrylic ester primer and is dried, thus obtaining the organic inorganic hybridized super-hydrophobic coating with favourablemechanic performances. The adhesive force of the super-hydrophobic coating can achieve 1-2 level, water static contact angle is more than 150 degrees, and rolling angle is less than 10 degrees. The invention is simple in technology, available in raw materials and low in cost and overcomes the defects of the existing preparation technology and the disadvantage of poor mechanical performances of the super-hydrophobic coating.

The invention provides a method for preparing porous silicon dioxide antireflective film with controllable refractive index, which adopts the method of first base catalysis and then acid catalysis for preparing coating liquid and is suitable for dip coating or spraying process or spin-coating method. Porous silicon dioxide basement film layer is coated on a base plate; and the base plate with porous silicon dioxide basement film layer is processed under high temperature so as to obtain the silicon dioxide film layer. The film layer which is prepared by the invention has the advantages of high hardness, high chemical stability, good self-cleaning capability and broadband antireflection.

The invention discloses a cutting tool used for metal processing, which comprises a cylindrical tool rest (1) and at least one blade (2), wherein the tool rest (1) is provided with blade bearings (11) for containing at least one blade (2); the rear end of each blade bearing (11) is provided with a cuttings channel (12) which is favorable for cuttings to fall off by the tool rest (1); each blade bearing (11) is a groove and is provided with three supporting surfaces for abutting against the blade (2), wherein the three supporting surfaces are respectively a cutting supporting surface (15), a longitudinal supporting surface (16) and a radial supporting surface (17); and at least one of the longitudinal supporting surface (16) and the radial supporting surface (17) is provided with at least one circular-arc notch (19). The hardness of the material is improved by the design on the tool rest structure, and therefore the tool has high fatigue strength. Meanwhile, material surface polishing is used to lower the possibility of forming fissures. In addition, the cutting tool has the advantages of simple structure and low cost and is convenient to manufacture.

The invention relates to a modified epoxy mortar abrasion-resistant patching material which comprises a component A and a component B. The mass ratio of the A component and the B component is 4:1. The A component comprises, by weight, 15-20 parts of epoxy resin, 1.5-2 parts of flexibilizer, 1.5-3 parts of reactive diluent and 75-82 parts of abrasive aggregates. The B component comprises, by weight, 18-24 parts of hardening agent, 1-1.5 parts of coupling agent and 75-80 parts of abrasive aggregates. The abrasive aggregates are quartz-sand-class aggregates or diamond-sand-class aggregates. The mass ratio of aggregates with the particle diameter of 10-20 meshes to aggregates with the particle diameter of 20-40 meshes to aggreates with the particel diameter of 40-70 to aggreates with the particel diameter of 100-200 meshes is 0-1 to 1-2 to 0-2 to 0-1. The hardening agent is a polyether amine hardening agent. According to the modified epoxy mortar abrasion-resistant patching material, the abrasion-resistant strength and the anti-impact strength are improved, the hardening reaction speed is lowered and micro cracks in the early stage of epoxy mortar are avoided.

A fuel pump, of which sliding mechanism parts in its fuel chamber have good wear resistance under a severe environment, and a direct fuel injection engine using the fuel pump are provided.

In a fuel pump for pressurizing and delivering fuel to a fuel injector of a vehicle engine, at least one of sliding surfaces of a slant plate, a slipper and a plunger sliding in a lubricating oil and at least one of sliding surfaces of sliding members of a plunger and a cylinder contacting with and sliding on each other through the fuel are formed of a hardened layer composed of any one of a nitrided layer, a carburization quenched layer and a carbonitrided layer, or coated with a high corrosion resistant and hard metal compound layer over the hardened layer.

The invention discloses Fe-Cr-B cast abrasion-resistant alloy and a manufacturing method thereof, the alloy comprises the following chemical compositions by mass percent: 0.22-0.45% of C, 12.0-18.0% of Cr, 0-8-1.5% of Si, 0-6-1.5% of Mn, 0-9-1.2% of B, 0.30-0.45% of Ni, 0.02-0.04% of Mg, 0.03-0.05% of Ce, 0.04-0.08% of Ti, 0.008-0.015% of N, 0.06-0.09% of Zn, less than 0.04% of S, less than 0.04% of P and the balance of Fe. After melting, casting and hot-processing, the hardness and toughness of the Fe-Cr-B cast abrasion-resistant alloy can be adjusted in a wide range so as to meet the requirements of different abrasion working conditions. The invention uses low-cost chromium and boron as the main alloying elements, does not contain expensive alloying elements such as tungsten, molybdenum, vanadium, niobium and the like, has the characteristics of high hardness, good toughness and the like, and has low cost, and has good economic benefit when being popularized.

The invention provides an aqueous rusted anti-corrosive coating and a preparation method thereof, belonging to the technical field of anti-corrosive coatings of steel and iron surfaces. The coating consists of the following raw materials in percentage by mass: 20-30 percent of iron rust transforming agent, 50-60 percent of composite high molecular emulsion, 0.01-0.2 percent of penetrating agent, 0.1-0.5 percent of film forming aid, 0.01-0.2 percent of thickening dispersant and 10-20 percent of deionized water. The aqueous rusted anti-corrosive coating prepared with the preparation method can be directly applied to coating of rusty steel and has high performance. The provided preparation method has the advantages of simple preparation process and low cost.

The invention discloses a rapid high-temperature curing drying process of a lead-acid storage battery unformed electrode plate. The process comprises the following steps of curing the unformed electrode plate which is coated with lead plaste in a curing chamber with the humidity of 95 to 99 percent and the temperature of 47 to 50 DEG C for 3 to 5h; increasing the indoor temperature in the curing chamber to 83 to 86 DEG C within 2 to 4h, curing the unformed electrode plate for 15 to 20h under the condition that the indoor temperature is 83 to 86 DEG C and the humidity is 97 to 99 percent, and reducing the temperature inside the curing chamber to 60 to 65 DEG C, and reducing the humidity to 90 to 95 percent; maintaining the temperature in the curing chamber to 60 to 65 DEG C, reducing the humidity to 80 to 85 percent, and curing the unformed electrode plate for 5 to 7h; increasing the temperature in the curing chamber to 86 to 88 DEG C within 2 to 4h, and reducing the humidity to 0 to 10 percent; maintaining the temperature in the curing chamber to 86 to 88 DEG C, controlling the humidity to 0, and drying the unformed electrode plate for 10 to 12h under the high temperature. The process is short in curing drying time, the curing drying time is shortened for 20h compared with that in an existing process, not only can an existing curing drying device be utilized, but also the curing drying time can be shortened under the condition that the investment is not increased, the production efficiency is improved, and the service life of the storage battery is prolonged.

An ultraviolet solidified luminous ink resisting to solvent is proportionally prepared from acrylate resin, acrylate, optical trigger, long-afterglow fluorescent powder and defoaming agent.

The invention provides a novel anti-corrosion, anti-ultraviolet, anti-bacteria and wear-resistant paint and a preparation method for the same. The novel anti-corrosion, anti-ultraviolet, anti-bacteria and wear-resistant paint is composed of an agent A and an agent B, wherein the agent A is composed of the following components in percentage by weight: 60-70% of fluorocarbon resin, 1-8% of graphene nanometre micro-sheets, 0-2% of an ultraviolet absorber, 0.5-1% of a dispersing agent, 0.5-1% of a levelling agent, 0.5-1% of a defoaming agent, 1-3% of bentonite, 20-25% of titanium dioxide, 0.5-1% of an adhesion promoter and 2-5% of a solvent; and the agent B is a curing agent used with the agent A. The preparation method provided by the invention is simple in operation and preparation processes; the prepared graphene anti-corrosion paint is excellent in wear-resistant, ageing-resistant, anti-bacteria and anti-corrosion performances; and moreover, graphene has no toxic and side effects, as well as is efficient and environment-friendly.

The invention relates to a heat-resistant cast aluminum alloy and an extrusion casting method thereof, and belongs to the fields of metallic materials and metallurgy. The alloy consists of the following elements in percentage by weight: Si, Cu, Ni, Mg, Ti, RE, Mn, Fe and Al. The heat-resistant cast aluminum alloy is prepared by virtue of extrusion casting, and after performing solution treatment and artificial aging treatment on the alloy, the room temperature tensile strength sigma b of the alloy is more than or equal to 420MPa, the tensile strength sigma b at 300 DEG C is more than or equal to 220MPa, the tensile strength sigma b at 350 DEG C is more than or equal to 140MPa, the room temperature extensibility delta is more than or equal to 2.5%, the extensibility delta at 300 DEG C is more than or equal to 6.5%, and the extensibility delta at 350 DEG C is more than or equal to 14.5%. According to the alloy and the extrusion casting method thereof provided by the invention, the casting performance is improved, the room-temperature and high-temperature mechanical properties of the alloy are greatly improved, and the application range of Al-Si series cast aluminum alloys is expanded.

The invention discloses a coating formula of oriented silicon steel barrier coat; the coating formula comprises the following components in parts by weight: 10-15 parts of light-weight magnesium oxide, 0-3 parts of nano magnesium oxide, 0.5-1.5 parts of titanium dioxide, 0.1-1.0 part of boride, 0-0.5 parts of antimonide and 79-89 parts of de-ionized water. The coat prepared according to the formula can enable the surface of an oriented silicon steel to form excellent magnesium silicate film substrate layer, and thus the surface quality, the magnetism and the activity of the silicon steel are improved; the formula not only can be used for normal oriented silicon steel but also can be used for high magnetic strength oriented silicon steel.

The invention relates to a dicer, in particular to a foamed plastic dicer, and aims to provide the foamed plastic dicer which is convenient to operate, high in dicing efficiency and uniform in dicing. In order to solve the technical problem, the foamed plastic dicer comprises a bottom plate, supporting rods, a collecting frame, a right rack, an operating table, a rocking handle, a circular gear, a left rack, a bearing block, a first rack, a fixing plate, a first slider and the like; the supporting rods are symmetrically welded to the left and the right of the middle of the top of the bottom plate; the upper ends of the supporting rods are welded with the operating table, the right rack is welded on the right side of the top of the bottom plate, a top plate is welded at the upper end of the right rack, and the left side of the bottom of the top plate is connected with an electric push rod by a bolt. A rotating motor drives a fan-shaped gear to rotate, the fan-shaped gear drives a second rack to move vertically, the second rack drives a blade to move vertically, and the blade dices foamed plastic.

The invention discloses an aqueous epoxy modified alkyd resin and a preparation method thereof, and belongs to the chemical technology field. According to the aqueous epoxy modified alkyd resin, an epoxy resin serves as a modified material, an epoxy ester is synthesized through the reaction of the epoxy resin and a fatty acid, and the aqueous epoxy modified alkyd resin with good mechanical properties, water solubility, stabilities and rot resistance is synthesized through ester exchange of the epoxy ester and the alkyd resin. The aqueous epoxy modified alkyd resin is applied in aqueous industrial anticorrosion coatings, the manufactured aqueous industrial anticorrosion coatings have high adhesive force and hardness, good impact resistance and the like, no solvent exists in an aqueous industrial anticorrosion coating system, the discharge amount of volatile organic compounds (VOC) is low, and performances can reach or exceed performance indexes of similar solvent coatings. The aqueous epoxy modified alkyd resin has the advantages of being energy saving, environment friendly, capable of improving safeties of transportation and construction and suitable for large-scale popularization and application.

The invention discloses an axle gear ring tray machining process which includes blank preparation, rough machining, heat treatment, semi-finishing, finish machining and product inspection. The heat treatment adopts thermal refining treatment, so that machined axle gear ring trays can be high in surface hardness and abrasion resistance, and the service life of the machined axle gear ring trays can be prolonged.

A sandwich of impact resistant material comprising: a first tile comprising a plurality of nano-particles bonded together, wherein the nano-structure of the nano-particles is present in the first tile and the first tile comprises a hardness value; a second tile comprising a plurality of nano-particles bonded together, wherein the nano-structure of the nano-particles is present in the second tile and the second tile comprises a hardness value; and a third tile comprising a plurality of nano-particles bonded together, wherein the nano-structure of the nano-particles is present in the third tile and the third tile comprises a hardness value, wherein the second tile is coupled in between the first tile and the third tile, and the second tile comprises a hardness value greater than the first tile and the second tile.

A male sexual aid is made of soft and elastomeric material such as rubber, silicone rubber, or latex. The device is composed of a hollow tube and two rings arranged on two lateral sides thereof. The hollow tube (tubular cone body) has only one opening for accommodating a micro-vibrator or LED capsule. The two rings include a testis ring and a penis ring. In usage, the two rings respectively embrace the base of the testis and penis in parallel or crosswise so that the erected penis extends and lasts longer. Moreover, the hollow tube holds tightly on the top of the base of the penis so that the device stimulates or vibrates the clitoris of females for increasing sexual pleasure during intercourse.

Provided is an active energy ray-curable inkjet ink containing at least photopolymerizable compounds. The photopolymerizable compounds include: at least one monofunctional monomer selected from the group consisting of a monofunctional monomer of which homopolymer has a glass transition temperature of 90° C. or higher, a monofunctional monomer having a ring structure, and a monofunctional monomer of which homopolymer has a glass transition temperature of 90° C. or higher and that has a ring structure; and urethane (meth)acrylate.

The invention discloses a V-Al-N hard coating with a nano composite structure. The V-Al-N hard coating comprises the following component: (V1-xAlx) N, wherein 1-x is between 0.41 and 0.6, and x is between 0.4 and 0.59. The V-Al-N hard coating ensures lower friction coefficients and higher hardness and is particularly suitable for being used as cutter coatings. The invention also discloses a preparation method for the V-Al-N hard coating with the nano composite structure. The preparation method comprises the following steps of: cleaning a matrix; and depositing the coating: assembling an Al target on an intermediate-frequency cathode in a vacuum chamber, assembling a V target on a direct current (DC) cathode, inputting Ar gas and N2 gas, and sputtering the matrix to deposit the V-Al-N hard coating with the nano composite structure under the conditions of 250 DEG C to 500 DEG C and 0.3 Pa to 1.0 Pa by regulating the power of the Al target and the power of the V target. The V-Al-N hard coating and the preparation method thereof have the advantages of high maneuverability, high controllability, easy industrialized production and higher economic benefit.

An optical thin film with high hardness made by insert mold technology and manufacturing processes thereof are disclosed. The optical thin film is applied on surface of a plastic housing for increasing hardness of the plastic housing so as to prevent scratches. During manufacturing processes of insert mold for producing a hard coating film, the step of hardening treatment is moved to the last step so as to avoid cracks on the optical thin film generated during the procedures. Thus the yield rate is increased and the manufacturing cost is reduced.

The invention relates to a hydrophobic scratch-resistant coating on the surface of an organic polymer and a preparation method thereof. The coating is a double-layer coating, and the first layer (bottom layer) is composed of 30-70% organic-inorganic hybrid resin, 20- The organic-inorganic hybrid coating composed of 50% oligomer, 5-25% reactive diluent, 1-2% photoinitiator and 0.2-3% additive is formed by UV curing; the second layer (top layer ) includes particles hydrophobically modified with an unsaturated double bond-containing organosilicon monomer, which particles are immobilized by a UV-curable resin. The coating has the characteristics of strong adhesion, high hardness, and good hydrophobicity, and can be used for coating protection of organic polymer surfaces.