41results about How to "Low friction coefficient" patented technology

A composition of matter particularly well suited for use as a peelable seal layer is described. The composition comprises from about 50 to about 85 percent by weight of a first polymer and from 15 to 50 percent of a second polymer. The first polymer is a propylene based polymer characterized by having a melting point of at least 125° C. together with a Comonomer Composition Distribution Breadth (“CCDB”) less than 2. The second polymer is characterized by having an interfacial adhesion with the first polymer of less than 1 lb / inch.

The invention relates to an antifriction heat-conducting lubricating grease for motor bearings of pure electric vehicles. The lubricating grease is prepared from, by weight, 65-85% of base oil, 5-20%of thickener, 0.1-5% of antioxidant, 0.1-5% of rust and corrosion inhibitor, and 5-20% of modified graphite. The lubricating grease has the advantages of friction reduction, energy conservation, excellent heat conductivity and the like. The product meets the lubricating requirements of high-rotating-speed, high-temperature, high-load and extremely-low-temperature motor bearings of pure electric vehicles, significantly reduces the friction coefficient of motor bearings and saves electric energy; meanwhile, the product has great heat conductivity, so that the running temperature of bearings is greatly reduced, and accordingly the service life of bearings is prolonged.

Finger gloves are provided for one or more fingers of the user of an electronic device with a touch screen. The finger gloves include a contact area made of a low-friction material.

Cardanol based dimers are provided. The cardanol dimers are formed by hydrosilylation with silanes. Cardanol based dimers may be further reacted to form epoxy curing agents and epoxies which can be used as anti-fouling coatings on ship hulls and marine structures. The cardanol dimers may also be used to produce friction particles or phenolic resins. Methods of synthesizing the cardanol based dimers, the epoxy curing agents and the epoxies are also provided.

The invention provides a direct buried type all-welded insulation ball valve. The direct buried type all-welded insulation ball valve comprises a valve body with a fluid passageway in internal part, a ball body placed at the center of the fluid passageway, a valve rod connected with the upper end of the ball body and a handle connected to the upper end of the valve rod. The direct buried type all-welded insulation ball valve is characterized in that the valve body sequentially comprises a seamless steel tube layer, an insulation layer and a plastic board layer from inner part to outer part, wherein the insulation layer is provided with at least one detection line to connect with a leakage alarming device; a valve base is arranged at the periphery of the ball body, and a valve base support and a spring supporting the valve support are arranged in the valve base; and the valve rod is an extension bar, and the distance of the valve rod extending the valve body is not less than the buried depth of the valve body. The direct buried type all-welded insulation ball valve has the advantages of being flexible to open and close, long in service life, and better in sealing effect under the action of pressure fluid; and the ball valve is provided with an extension valve rod, so that the opening and closing device is in earth surface, the valves can be conveniently opened and closed, the mounting period is shortened, the cost is reduced, and the maintenance is convenient.

In order to provide an adequate amount of oil to a sliding surface and to prevent oil from moving from the sliding surface to the interior, thereby achieving lower friction and improving the bearing sliding characteristic, in this oil-impregnated sintered bearing (1) a sliding surface (3) supporting the outer circumferential surface of a shaft (11) and an oil supply surface (4) having a larger diameter than the sliding surface (3) are formed on the inner circumferential surface of a bearing hole (2) in which the shaft (11) is inserted, and are formed adjacent to each other in the axial direction of the bearing hole (2). The difference in height d1 between the sliding surface (3) and the oil supply surface (4) is 0.01% to 15% of the inner diameter of the sliding surface, the surface openingratio of the sliding surface (3) is 10% or less, the surface opening ratio of the oil supply surface (4) exceeds 10%, and the average equivalent-circle diameter of the openings of pores in the sliding surface is 20 mu m or less.

High theoretical density, metal-based materials containing graphite or hexagonal boron nitride have low coefficients of friction and wear rates are useful for bearings, bushings and other articles subject to bearing loads.

A thermal management apparatus includes an electrohydrodynamic fluid accelerator in which an emitter electrode and another electrode are energizable to motivate fluid flow. One of the electrodes includes a solid solution formed of a solvent metal having a first performance characteristic and a solute material having a second performance characteristic. The first and second performance characteristics are exhibited substantially independently in the electrode as the solvent metal and solute material remain substantially pure within the solid solution. A method of making an EHD product includes providing an electrode with such a solid solution and positioning the electrode relative to another electrode to motivate fluid flow when energized.

The invention discloses a fiber reinforced composite material perforation cutter based on electroplated diamond. The cutter comprises a cutter bit arranged at the front end of a cutter bar and electroplated with diamond particles on the surface; the cutter bit includes multiple arc cutting parts and multiple chip removing grooves uniformly distributed in the radial direction; the arc cutting parts and the chip removing parts are staggered in the peripheral direction; the outer surfaces of all the arc cutting parts are one part of the same cylindrical surface; a center drill is arranged in a cylindrical space formed by the inner sides of the multiple arc cutting parts; each arc cutting part includes a back cutter surface and a front cutter surface; the back cutter surfaces are overlapped with the end faces, where the back cutter surfaces are positioned, of the corresponding arc cutting parts; the front cutter surfaces and one side surfaces of the chip removing grooves share one surfaces; the normal direction of the front cutter surfaces is consistent with the rotating linear speed of the cutter bit; arc main cutting edges are arranged in the cross places of the front cutter surface and the back cutter surface; and chip pre-storing grooves communicated with the multiple chip removing grooves are formed between the arc cutting parts and the center drill. The cutter can eliminate such phenomenon as easy generation of layering, tearing and burrs during drilling of fiber reinforced composite materials.

The invention relates to the technical field of lubricating agents, in particular to a papermaking water-based lubricating agent which is made of raw materials including, by weight, 11-21 parts of hydroxy silicone oil, 10-20 parts of sulfated castor oil, 10-20 parts of sodium stearate, 5-10 parts of triisopropanolamine, 20-30 parts of polyaspartic acid, 15-25 parts of propylene glycol and 150-450 parts of water. The invention further provides a preparation method of the papermaking water-based lubricating agent. Flowability of a coating is effectively improved by the papermaking water-based lubricating agent, the friction coefficient of coated paper is reduced, coating adaptability and paper smoothness and glossiness are improved, sticking of a coating roll is prevented, the lubricating agent is mainly applied to the papermaking coating of the coated paper, the preparation method is simple, and the water-based lubricating agent prepared by the method achieves the best effect.

The invention relates to a split-flow injection allocation method and a split-flow distributor. The method of the invention is characterized in that every subsection of a polymer injection pipe is provided with at least one distributor, and a split-flow barrier is arranged in the distributor to divide polymeric liquid entering into the distributor into two parts, one part of which flows up to an upper oil reservoir and the other part of which continues to flow down to the lower oil reservoir. The polymer injection pipe is provided with the split-flow distributor and the surface of the split-flow distributor is sleekly connected with the outlet of the distributor. So liquid passing by the distributor has little partial drop pressure loss, low friction resistance and little shearing action,thus effectively reducing the loss of the viscosity of injected polymer. The split-flow injection allocation method and the split-flow distributor can be widely used for improving the recovery ratio of reservoir oil displacement in an offshore oilfield.

The invention discloses a micro pneumatic pump of low power consumption air guiding structure, wherein the gas guiding component contains air cock, briquette and piston body with multiple small piston cavities; the air hole is opened on the briquette in connection with the air cock; the one-way air vent valve is fixed on the air hole; the air vent hole connects each piston cavity to form one-way air vent passage; the driving component contains motor, eccentric wheel, compression piece, driving shaft and piston rack; the elastic fixation case and air orifice are set under each piston cavity with one-way valve on the air orifice; the corresponding piston installment position and air orifice are set on the compression piece, which encase the elastic fixation case tightly; the one-way air-in passage is composed of air orifice under each piston cavity, one-way air orifice valve and air orifice on the compression piece; the motor compresses the piston cavity on the piston rack through the eccentric wheel and driving compression piece of driving shaft.

The invention relates to the technical field of lubricant, in particular to water-based lubricant for paper making. The water-based lubricant for paper making is prepared, by weight, by the following raw materials of 10-20 parts of sulfated castor oil, 8-16 parts of hydroxyl silicone oil, 1-5 parts of hydroxyethyl cellulose, 2-6 parts of hydroxy propyl methyl cellulose, 1-5 parts of methyl cellulose, 5-10 parts of polyphenylene sulfide, 8-15 parts of alkyl glycoside, 0.5-3.5 parts of polytetrafluoroethylene, 1-5 parts of sodium diacetate and 30-40 parts of water. According to the water-based lubricant for paper making, the good lubricating effect is achieved, the friction coefficients of coating paper are greatly reduced, the coating adaptability and the smoothness, glossiness and surface strength of finished paper are improved, no carcinogenic ingredient is contained in the raw materials, and environmental protection is achieved; the water-based lubricant for paper making is mainly applied in paper making coatings of the coating paper.

The invention discloses a diamond-electroplated tool for drilling of a fiber reinforced composite material. The diamond-electroplated tool comprises a cylindrical tool rod. A tool bit with the surface electroplated with diamond particles is arranged at the front end of the tool rod. The tool bit comprises a plurality of cutting parts and a plurality of chip discharge grooves. The cutting parts and the chip discharge grooves are evenly distributed in the radial direction and arranged in a staggered manner in the circumferential direction. The outer surfaces of all the cutting parts are part of the same cylindrical face. The cutting parts are located at the front end of the tool bit, and the length of the chip discharge grooves is equal to that of the tool bit. Each cutting part comprises a rear tool face and a front tool face. The rear tool faces coincide with the end face where all the cutting parts are located. The front tool faces and one side faces of the chip discharge grooves are coplanar. The normal direction of the front tool faces is consistent with the rotating linear speed direction of the tool bit. Arc main cutting edges are arranged at the cross positions of the front tool faces and the rear tool faces. A plurality of chip pre-storage grooves communicated with the chip discharge grooves are formed in the center of the end of the tool bit. According to the tool, the phenomenon that in the prior art, during drilling machining of a fiber reinforced composite material, layering, tearing, burrs and the like are likely to occur can be eliminated.

The invention relates to a sintered oil-impregnated bearing, on the inner peripheral surface of a bearing hole (2) into which a shaft (11) is inserted, a sliding surface (3) supporting the outer peripheral surface of the shaft (11) and a bearing The shaft center of the hole (2) is a spiral oil supply surface (4), and the surface opening ratio on the sliding surface (3) is 10% or less, and the surface opening ratio of the oil supply surface (4) exceeds 10%. Thus, the present invention supplies a sufficient amount of oil to the sliding surface (3) and suppresses the supplied oil from moving inside from the sliding surface (3), thereby achieving a low coefficient of friction and improving the sliding characteristics of the bearing.

The invention discloses a nanometer composite ocean anticorrosion coating and a preparation method thereof, belonging to the field ofcorrosion prevention of coatings. The coating contains the following components in percentage by weight: a component A: 20%-40% of acrylic resin, 5%-10% of a hydroxyl epoxy phosphate dispersing agent, 4%-7% of a Fe3O4@TiO2-h-BN hybridized composite material, 0.5%-2%of nano-crystalline cellulose, 5%-15% of epoxy resin, 1.2%-3.5% of other aids, 20%-25% of deionized water, 5%-10% of zinc powder and 3%-7% of calcium carbonate; and a component B: a curing agent, namely 15%-25% of a water-based isocyanate curing agent. The coating prepared by virtue of the preparation method has good wear resistance, fouling resistance and corrosion resistance, is mainly applied to the fouling prevention and corrosion prevention of petroleum steel-frame structure platforms in an ocean atmospheric region environment and is also suitable for the fields of fouling prevention andcorrosion prevention of ships and underwater pipelines.

A rolling element bearing, comprises an inner ring, an outer ring and rolling elements which are in rolling contact with the raceways of the inner ring and the outer ring. The rolling elements and / or the raceway (2) of at least one of the rings is coated with a metal-mixed diamond-like carbon layer (8).