61results about How to "Good anti-friction and wear resistance" patented technology

The invention discloses a graphene modified teflon solid lubrication coating which is prepared from, by mass, 100 parts of teflon, 0.3-10 parts of molybdenum disulfide, 0-8 parts of graphite, 0.1-5 parts of grapheme, 0-6 parts of graphene oxide and 80-380 parts of water. A preparation method of the graphene modified teflon solid lubrication coating includes the steps that teflon emulsion, the molybdenum disulfide, the graphite, the grapheme, the graphene oxide and the balance water are mixed to be uniform and then sprayed on the surface of a metal product in a coating mode, then high-temperature sintering and cooling are conducted, and the graphene modified teflon solid lubrication coating can be obtained. The obtained graphene modified teflon solid lubrication coating has good self-lubricating performance, mechanical properties, wear reduction and resistance, heat stability and adhesion.

The invention relates to a high-performance antifriction and antiwear manganese-aluminum-bronze alloy. According to the technical scheme adopted by the invention, the high-performance antifriction and antiwear manganese-aluminum-bronze alloy is prepared from Mn, Al, Fe, Zn, Ce and Cu by casting and hot forging or hot rolling. The elements of the high-performance antifriction and antiwear manganese-aluminum-bronze alloy comprise 5-10% by mass of Mn, 6-10% by mass of Al, 1.5-2.5% by mass of Fe, 1.5-2.5% by mass of Zn, 0.4-0.8% by mass of Ce and the balance of Cu. The high-performance antifriction and antiwear manganese-aluminum-bronze alloy provided by the invention can be used for overcoming the defects of low fatigue strength and poor heat resistance of babbitt and increase of seizure resistance, compliance resistance and embedment resistance of copper-based alloy and aluminum-based alloy in poor lubrication environment and solving the traditional problem in the field that toxic metals such as lead and cadmium can cause pollution to environment easily. In addition, the high-performance antifriction and antiwear manganese-aluminum-bronze alloy can function as the antifriction and antiwear material of all parts and components of a friction motion pair used in complex conditions of high speed, heavy duty, high temperature and corrosive media in the machinery industry, metallurgy industry, energy industry and chemical industry and can be used for preparing parts and components such as sliding bearings, worm gears, sliding blocks, shaft sleeves and driving nuts.

The invention provides an aluminum oxide-based nano-composite ceramic mold material and a preparation method thereof. The composite material is prepared from the raw materials: aluminum oxide, lecithin, silicon carbide, calcium sulfate whiskers, zirconium oxide, titanium oxide, zinc oxide, molybdenum, magnesium oxide and 1 to 3 parts of nickel. The preparation method comprises the steps of adding the aluminum oxide into absolute ethyl alcohol to prepare into suspension liquid A; adding the lecithin, the silicon carbide, the calcium sulfate whiskers, the zirconium oxide, the titanium oxide and the zinc oxide into the absolute ethyl alcohol to prepare into suspension liquid B; mixing the suspension liquid A and the suspension liquid B, adding the molybdenum, the magnesium oxide and the nickel, and carrying out ultrasonic dispersion; pouring the mixed suspension liquid into a ball-milling tank; utilizing a sintered carbide ball for mechanically ball-milling, vacuum drying the grinding liquid at 100 DEG C, sieving the obtained composite powder, and performing hot pressed sintering to obtain the aluminum oxide-based nano-composite ceramic mold material. Compared with an aluminum oxide ceramic mold material, the composite ceramic mold material provided by the invention has better integrated mechanical property and excellent antifriction and anti-wear properties.

The invention provides an MXene / GO composite coating and a preparation method and application thereof, and belongs to the technical field of nano composite materials. The preparation method comprises the following steps that MXene and graphene oxide are dispersed in water to obtain an MXene / GO mixed solution; electrophoretic deposition is carried out by taking polar plates as a cathode and an anode and the MXene / GO mixed solution as a deposition medium to obtain a deposition coating; and the deposition coating is dried, and the MXene / GO composite coating is obtained. According to the method for rapidly and simply preparing the MXene / GO composite coating, the MXene / GO composite coating prepared through the electrophoretic deposition method is uniform and flat in surface and controllable in thickness, meanwhile, under the action of an electric field, combination of negatively charged MXene and GO and the polar plates is firmer, excellent antifriction and abrasion resistance is shown, and the high-quality composite coating can be rapidly obtained.

The invention discloses a self-lubricating bearing based on fiber fabric modification and a manufacturing method thereof. The self-lubricating bearing comprises an outer lining and an inner lining layer installed in the outer lining, and the inner lining layer comprises a metal substrate and a fiber resin composite layer located on the metal substrate. The preparation method comprises the following steps that the fiber fabric treated by a silane coupling agent and an epoxy resin-based composite material are dipped at first to obtain a fiber fabric composite material, and the two steps of prepressing thermocuring and thermocuring are executed on the fiber fabric composite material and the metal substrate to obtain a planar dry friction self-lubricating composite material; and the planar dryfriction self-lubricating composite material is rolled into the shaft sleeve lining layer to be mounted in the outer lining, and accordingly the self-lubricating bearing can be obtained. The dry friction self-lubricating bearing is good in bearing capacity, the friction coefficient is effectively reduced, and the self-lubricating performance is remarkably improved.

The invention discloses a high-strength antifriction aluminum alloy which comprises the following chemical components in percentage by weight: 1.0-7.0% of tin, 3.0-7.0% of copper, 0.20-1.60% of manganese, 0.40-1.60% of silicon, 0.40-2.0% of magnesium, 0.01-1.0% of rare earth element scandium, at most 0.70% of impurities and the balance of aluminum. The aluminum alloy has the advantages of uniform and segregation-free components, fine structure and high tensile strength (up to 320-350 MPa). The friction factor is less than 0.02, and the aluminum alloy has excellent antifriction property and wear resistance. The aluminum alloy has the advantages of favorable processability and low cost.

The invention provides a titanium-aluminum-silver-nitride nano composite coating and a preparation method thereof. The titanium-aluminum-silver-nitride nano composite coating is characterized by mainly comprising titanium-aluminum-nitrogen nanocrystal particles with the particle diameter of 8-33 nm and silver distributed between crystal boundaries of the titanium-aluminum-nitrogen nanocrystal particles, and comprises 3-8 at.% of silver, 45-50 at.% of nitrogen and the balance of titanium and aluminum. The preparation method comprises the following steps: step 1, vacuumizing after metal or an alloy substrate is packed into a cavity of coating equipment, heating, stabilizing, and introducing Ar; step 2, enabling a sample table to rotate, starting substrate voltage bias, and then starting a chrome target starting power supply for sputtering; step 3, introducing N2, and linearly increasing the flow of the N2 according to time to control the flow ratio of Ar / N2; step 4, starting a titanium-aluminum target starting power supply, quickly increasing the density of titanium-aluminum target current, and simultaneously increasing the density of silver target current; step 5, sequentially turning off the titanium-aluminum target, the silver target and a substrate heating power supply, and closing the introduction of the N2; step 6, taking out a coated sample. The titanium-aluminum-silver-nitride nano composite coating has higher hardness and higher fracture toughness, and is smaller in friction coefficient and lower in wear rate at the environment with the temperature of 400-600 DEG C.

A high-strength antifriction and wearable aluminum-manganese bronze alloy is prepared by using Mn, Al, Fe, Zn, Ce, Si, B and Cu as ingredients, and performing casting, hot forging or hot rolling machine-forming; the mass percent of all elements in the high-strength antifriction and wearable aluminum-manganese bronze alloy is 8-10 percent of Mn, 8-10 percent of Al, 1.5-2.5 percent of Fe, 1.5-2.5 percent of Zn, 0.4-0.8 percent of Ce, 0-3 percent of Si, 0-0.4 percent of B and the balance of Cu. The high-strength antifriction and wearable aluminum-manganese bronze alloy overcomes the defects that babbitt metal is low in fatigue strength, and poor in heat resistance, and the adhesion resistance, the compliance, the embedded hidden performance of a copper base alloy and an aluminium base alloy are easily improved in a bad lubrication environment, solves the traditional industry problem that toxic metal such as lead and cadmium causes environmental pollution easily, has relatively high mechanical strength and carrying capacity, is suitable for manufacturing ideal high-strength antifriction and wearable material of components of a friction motion pair under the complex working conditions, such as high speed, heavy load, high temperature and corrosive mediums in industries, such as machinery, metallurgy, energy and chemical engineering, and for example, is suitable for manufacturing a sliding bearing, a worm gear pair, a sliding block, a shaft sleeve, a transmission nut and other components.

The invention relates to an amino-modified grapheme / graphene MoSe2 / bismaleimide composite material and a preparation method thereof, and belongs to the technical field of advanced composite materials. Firstly, the surface of the graphene oxide is modified by using a silane coupling agent KH-550 to carry an active amino group, and then is mixed with the Na2MoO4 2H2O and the selenium powder dissolved in N2H4 H2O, and the amino-modified graphene / graphene molybdenum diselenide nano composite particle is prepared by a one-pot hydrothermal method. And finally, the prepared nano composite particles are mixed with the diphenylmethane-type bismaleimide and the diallyl bisphenol A in a certain proportion to prepare the composite material. The prepared composite material has good interface bonding strength, excellent mechanical property and tribological performance.

The invention relates to a high-performance antifriction and antiwear manganese-aluminum-bronze alloy. According to the technical scheme adopted by the invention, the high-performance antifriction and antiwear manganese-aluminum-bronze alloy is prepared from Mn, Al, Fe, Zn, Ce and Cu by casting and hot forging or hot rolling. The elements of the high-performance antifriction and antiwear manganese-aluminum-bronze alloy comprise 5-10% by mass of Mn, 6-10% by mass of Al, 1.5-2.5% by mass of Fe, 1.5-2.5% by mass of Zn, 0.4-0.8% by mass of Ce and the balance of Cu. The high-performance antifriction and antiwear manganese-aluminum-bronze alloy provided by the invention can be used for overcoming the defects of low fatigue strength and poor heat resistance of babbitt and increase of seizure resistance, compliance resistance and embedment resistance of copper-based alloy and aluminum-based alloy in poor lubrication environment and solving the traditional problem in the field that toxic metals such as lead and cadmium can cause pollution to environment easily. In addition, the high-performance antifriction and antiwear manganese-aluminum-bronze alloy can function as the antifriction and antiwear material of all parts and components of a friction motion pair used in complex conditions of high speed, heavy duty, high temperature and corrosive media in the machinery industry, metallurgy industry, energy industry and chemical industry and can be used for preparing parts and components such as sliding bearings, worm gears, sliding blocks, shaft sleeves and driving nuts.

The invention discloses a novel slewing bearing for tooth surface self-lubrication and a preparation method of the novel slewing bearing. A flow channel micro-texture is machined on the tooth surface of the slewing bearing through a laser marking technology, a solid lubricant can be more fully spread on the surface of a base body through the bionic micro-texture, so that a layer of lubricating film is formed, and the effects of reducing friction and reducing material abrasion are achieved. the composite solid lubricant is multi-element hollow spherical composite lubricant powder with a single-particle structure, and is prepared by spraying a mixed solution of ammonium molybdate, silver nitrate, boric acid and ammonium tungstate into a high-temperature atmosphere of 700-800 DEG C in a vaporific manner and carrying out thermal decomposition synthesis. The composite spherical power, serving as the solid lubricant phase, fills the micro-texture through vacuum dissolution and permeation, so that the obtained tooth surface is provided with a self-lubrication composite material with a self-lubrication phase. Compared with a traditional slewing bearing, the novel slewing bearing with the tooth surface self-lubrication function has the advantages of excellent friction reduction and wear resistance, low friction coefficient, low wear rate, higher use stability and longer fatigue life.

The invention provides a preparation method of modified polyphenylene sulfide, which comprises the following steps: preparing ZIF-8 / BN: adding boron nitride into a mixed solution of an organic solvent and water, uniformly mixing, ultrasonically and centrifugally taking an upper solution, and freeze-drying to obtain a boron nitride nanosheet; the preparation method comprises the following steps: dispersing boron nitride nanosheets in methanol, adding zinc nitrate hexahydrate and 2-methylimidazole, and standing at room temperature to obtain ZIF-8 / BN; preparing modified polyphenylene sulfide: mixing polyphenylene sulfide, glass fiber and ZIF-8 / BN, and then extruding and granulating; the mass ratio of the polyphenylene sulfide to the glass fibers to the ZIF-8 / BN is (55 to 80): (10 to 40): (1 to 5). The ZIF-8 modified BN and the glass fibers are used for synergistically modifying the polyphenylene sulfide, so that the strength and the temperature resistance of the polyphenylene sulfide are improved, and the polyphenylene sulfide has a longer service life in a high-temperature environment, and can be used for preparing the coil framework of the voice coil motor.

The invention discloses a device and a method for preparing a toughened amorphous carbon-based multi-phase hybrid film. The device is a radio frequency magnetron sputtering assisted direct current and pulse cathodic arc multi-excitation source plasma coating device. The preparation method includes: drying the pretreated substrate and placing it on the rotating sample stage of the multi-excitation source plasma coating device; Vacuumize, introduce argon gas into the vacuum chamber, and use ion source to sputter and clean the surface of the substrate; use high-purity metal aluminum, titanium and graphite sheets as magnetron sputtering targets, direct current and pulse cathodic arc evaporation targets respectively , enter argon and nitrogen, design multi-phase hybrid film structure according to the formation rules of nanocrystalline and amorphous phases, adjust the sample stage speed, and use multi-excitation source plasma technology to introduce functional doping elements and gradient intermediate layers to prepare amorphous carbon heterogeneous hybrid films. The amorphous carbon-based multi-phase hybrid thin film prepared by the invention has adjustable structure, controllable phase composition distribution, high hardness, high adhesion strength and toughness.

The invention discloses an aqueous epoxy adhering solid lubricant. The lubricant is composed of bi-component aqueous epoxy resins, a solid lubricant, a wear-resisting agent, a surface active agent, an antiseptic agent, an anti-sedimentation agent and water. The lubricant can be coated on the surfaces of processing workpieces such as stainless steel, carbon steel, alloy and the like. The lubricant is characterized in that water is adopted as a solvent, which has no pollution and no damage on bodies of painting constructors; and the coating has the advantages of good antifriction property and excellent physicochemical properties, and can replace an organic solvent type solid lubricant to be used on slide parts of multiple mechanical devices.

The invention provides a polyetherimide-attapulgite-carbon fiber hybrid material and a preparation method thereof, modified UHMWPE and a preparation method thereof, belonging to the technical field of solid lubricating materials. The interfacial bonding between the polyetherimide-attapulgite-carbon fiber hybrid material prepared by the present invention and the UHMWPE matrix is ​​good, and the polyetherimide-attapulgite-carbon fiber hybrid material is used for modification of UHMWPE to obtain The modified UHMWPE has excellent anti-friction and wear resistance properties.

The invention relates to a nano ceramic tool and die material and a preparation method thereof. The ceramic tool and die material is sintered from yttrium stabilized nano ZrO2 serving as matrix, added micro TiB2 and micro alpha-Al2O3 serving as enhancing phases and micro molybdenum, nickel and magnesium oxide serving as sintering aids. The preparation method comprises the following steps: dispersing the nano ZrO2, micro TiB2 and micro alpha-Al2O3 powder respectively, ball-mixing and drying the power to obtain a powdery material, and sintering the powdery material by adopting a hot-pressing method. The method is favorable for improving the mechanical property of the material, and has the advantages of simple preparation, convenient operation and the like. The obtained nano ceramic tool anddie material has good comprehensive mechanical property, friction reduction and abrasion resistance, and can be used for manufacturing cutting tools, dies and other abrasion and corrosion resistant parts.

The invention provides a modified polyetherimide material, a preparation method thereof and a cable support, and belongs to the technical field of insulating materials. The preparation method of the modified polyetherimide material provided by the invention comprises the following steps: coextruding polyetherimide, glass fibers and two-dimensional boron alkene to obtain the modified polyetherimide material, the mass ratio of the polyetherimide to the glass fibers to the two-dimensional boron alkene is (60-80): (10-30): (1-5). The MBene and the glass fiber are introduced into the PEI cable support, so that the strength and the high-temperature resistance of the PEI cable support are effectively improved under the condition of ensuring excellent insulativity of a device.