306results about How to "Improve anti-friction and anti-wear properties" patented technology

The invention discloses a protective grease composition with high performance for a high-temperature-resistant steel wire rope and a preparation method thereof. The protective lubricating grease composition for the steel wire rope is prepared from base oil (high-viscosity mineral oil or synthetic oil), a thickening agent, an additive and a covering agent. The ordinary protective lubricating grease for the steel wire rope is prepared by thickening the base oil with a solid hydrocarbon thickening agent. The thickening agent disclosed by the invention is bentonite. A high-molecular-weight tackifier and a lubricating grease solid filler are adopted, so that the performance of bentonite lubricating grease is further improved, the protective lubricating grease for the steel wire rope has extremely high high-temperature resistance and extremely high adhesion strength, and low-cost protective grease with excellent combination property for the steel wire rope is provided. The protective grease for the steel wire rope is specially used for protecting the steel wire rope used in an extreme high temperature environment.

The invention discloses a method for preparing a hexagonal molybdenum disulfide nanosheet as an anti-friction additive. An additive-assistant hydrothermal synthesis method is adopted. The preparation method comprises the following steps: synthesizing a carbon ball from a high molecular compound as a carbon source by a Stober method; dissolving Na2MO4, Na2S and NH2OH.HCl in water to obtain a solution; adding the prepared nano carbon ball and uniformly dispersing the nano carbon ball in the solution by centrifugal stirring; adjusting the pH value of the solution to 6 to 8 with acid, and stirring the obtained solution and then moving the solution to a stainless steel reaction kettle for thermostatic reaction to obtain a reaction product; and separating the reaction product and annealing the product in a tube furnace of 400 to 600 DEG C to obtain the hexagonal molybdenum disulfide nanosheet. The preparation method is simple in process, and the prepared product is high in purity and yield, and excellent in antifriction and anti-wearing and lubricating property, and can serve as the anti-friction additive of lubricating oil and fat.

The invention discloses functionalized oil-soluble ionic liquid. The ionic liquid is phosphate functionalized quaternary phosphorus and quaternary ammonium oil-soluble ionic liquid. The positive ions of the ionic liquid are quaternary phosphorus or quaternary ammonium positive ions with phosphate functional groups and different alkyl chain lengths. The negative ions of the ionic liquid are EDHPA, DOSS, DDSSP and SL. The ionic liquid can effectively reduce the corrosion of base oil on metal, restrain the generation of carbon deposition and improve the lubricating performance of lubricating oil. The invention further discloses a preparing method and application of the ionic liquid.

The invention provides a WS2/MoS2 solid lubricating multilayer film and a preparation method thereof, which firstly prepares a W/Mo multilayer film through double-target RF sputtering and a W layer and an Mo layer are deposited alternatively on a substrate, and then low temperature ion sulfurizing is carried out to the W/Mo multilayer film and the WS2/MoS2 solid lubricating multilayer film is prepared. The invention prepares a novel solid lubricating film, namely, the WS2/MoS2 solid lubricating nano multilayer film through two-step compound treatment. The sublayers of the WS2/MoS2 solid lubricating nano multilayer film have the same thickness and element sulfur is distributed evenly in the multilayer film, thus leading the multilayer film to have higher rigidity, good nano properties, elasticity modulus and yield strength, better practicability and excellent anti-friction and wear-resistant properties in nano mechanical properties and anti-friction and wear-resistant aspects as being compared with the existing nano multilayer films. The WS2/MoS2 solid lubricating multilayer film can be used on various friction surfaces of machinery equipment, particularly on precisely matching surfaces to reduce friction and improve lubrication conditions.

The present invention discloses one kind of nanometer lubricating oil additive, which consists of liposoluble nanometer copper or copper alloy and liposoluble nanometer silica. The nanometer lubricating oil additive of the present invention can realize the self repair of the worn part, and possesses the functions of saving oil, resisting abrasion, reducing noise, decreasing carbon deposit, raising power performance, etc. It has high dispersivity in lubricating oil, high oxidation stability and long term stability, and is favorable to solving different friction and wear problems in different work conditions.

The invention relates to a method and a device for preparing a film coating micronano texture and belongs to a film coating of surface engineering. The preparation method comprises the steps of preparing at early stage, depositing the film coating, preparing the micronano texture and performing aftertreatment. The special device is a multi-beam pulse laser micronano texture processing system device. The multi-beam pulse laser micronano texture processing system device comprises a pulse laser module, an optical path transmission module and a precise scanning module which are connected with one another sequentially. The invention has the advantages that: the method and the device are convenient in processing and high in efficiency; preparation for the film coating deposition micronano texture on the surface of a material is realized by one laser source; the process is simple, and easy to control; the prepared samples are not subjected to a complex posttreatment process; the application range is wide; ultraviolet pulse laser has the characteristics of large photon energy and short wavelength and can perform precise micronano texture treatment on any materials; chemical reaction of various gases can be induced; and film coating deposition can be performed efficiently.

The invention discloses a long-chain alkyl imidazole phosphate ionic liquid, i.e. 1-tetradecyl-3-(2-ethylhexyl)-imidazole diisooctyl phosphate. The invention also discloses a preparation method and application of the ionic liquid. The ionic liquid involved in the invention has certain catalytic activity, and is also soluble in the reaction product trimethylolpropane oleate, so that catalyst separation is omitted after esterification reaction, and the industrial production cost is greatly reduced. More importantly, the ionic liquid soluble in trimethylolpropane trioleate has excellent friction reduction and antiwear effects, and can significantly improve the tribological properties of base oil.

The invention discloses a preparation method of graphene functional lubricating oil. The preparation method comprises the following steps: S1. respectively dissolving zinc acetate and thioacetamide in water to prepare solutions; S2. mixing the zinc acetate solution and the thioacetamide solution with dialkyl dithiophosphate and hydrazine hydrate to react and then separating, washing and drying an obtained precipitate, thus obtaining dialkyl dithiophosphate modified nano zinc sulfide; S3. stirring nano graphene, nano molybdenum disulfide, nano borate and a coupling agent to mix the materials to obtain coupling agent modified nano composite powder; and S4. adding dialkyl dithiophosphate modified nano zinc sulfide obtained in the step S2 to base oil, adding the coupling agent modified nano composite powder obtained in the step S3 to the base oil, stirring the materials at a high speed at a certain temperature and then restoring the temperature to the normal temperature, thus obtaining the graphene functional lubricating oil. The prepared lubricating oil has excellent antifriction and antiwear properties and high bearing capacity and has the function of repairing worn surfaces.

The invention discloses a solvent-free graphene oxide loaded silica nano fluid. A graphene oxide loaded silica composite system can be taken as a nano nucleus to synthetize a solvent-free nano fluid;modification can be performed on silica nanoparticles by using a surfactant, so that the silica nanoparticles with positive charge can be obtained; the modified silica nanoparticles can be loaded on agraphene oxide sheet surface by utilizing an electrostatic self-assembly effect; and the solvent-free graphene oxide loaded silica nano fluid can be synthetized by grafting a silane coupling agent with different function groups and flexible long chain molecules through a chemical bonding effect. Applications of the nano fluid are also disclosed. The nano fluid can effectively enhance the lubrication performance of the system, strengthen the intensity of an adsorption film and a tribochemical reaction film, and improve the boundary lubrication capabilities of friction pairs.

The present invention discloses a preparation method for a metal material surface antifriction and antiwear nano-composite film. According to the method, a combination process of a self-assembled molecular film technology and an organic plating technology is sequentially adopted to prepare the nano-composite film with functions of antifriction property and anti-wear property on titanium alloy surfaces, aluminum alloy surfaces, NdFeB permanent magnet material surfaces, magnesium alloy surfaces or low carbon steel surfaces. The solute of the self-assembled solution is a thiol-silane organic compound salt, wherein the thiol-silane organic compound salt concurrently contains -SH and -Si(OR)3, the concentration of the thiol-silane organic compound salt is 0.5-10 mmol/L. The organic plating electrolyte solution comprises 0.1-10 mmol/L of a thiol organic compound salt containing -SH and 0.1-6 mol/L of a supporting electrolyte. According to the present invention, the preparation method of the present invention has characteristics of simple process, convenient operation; the prepared nano-composite film has characteristics of short preparation period, low cost, controllable thickness of the composite film and good stability; the prepared nano-composite film of the invention has excellent antifriction property and anti-wear property so as to solve the tribology problems of the materials in the micro/nano-electromechanical systems, and is applicable for the industrialization.

The formula of piston for petrol engine comprises (wt%) Si 11%-13%, Cu 0.8%-1.5%, Mg 0.8%-1.3%, Mn 0.01%-0.2%, Fe 0.01%-0.5%, Ni 1%-1.5%, Zn 0.01%-0.2%, Ti 0.01%-0.2%, Te 0.1%-0.4%, Li 0.01%-0.1%, Co0.01%-0.1% and the rest is Al. Said piston can reduce gap between piston and cylinder jacket, and its working surface layer contains special substance capable of firmly combining with engine oil, so taht its sealing and antifriction properties are good, and it can prolong the life of engine.

The invention discloses a method for improving the surface tribology performance of M50NiL bearing steel, and belongs to the technical field of material surface modification. The vacuum pulse carburization technology is adopted for conducting carburization and high-temperature tempering treatment on the surface of an M50NiL bearing steel base material; then quenching and tempering treatment is conducted; a surface white bright layer of the M50NiL bearing steel base material is removed; and a binding layer, a chromium metal layer, a Cr->GLC gradient layer and a GLC base solid lubricating film are deposited on the surface of the M50NiL bearing steel base material through the multi-target non-magnetic-control sputtering technology. According to the method, the surface carbonization technologyand the unbalanced-magnetic-control sputtering technology are combined, on one hand, the surface of the M50NiL bearing steel is intensified through the carbonization technology, and good support is provided for the GLC base solid lubricating film; on the other hand, the unbalanced-magnetic-control sputtering technology is utilized for preparing the GLC base solid lubricating film with good self-adaptability and tribology performance, and the friction reducing and abrasion resisting performance of the surface of the M50NiL bearing steel is obviously improved.

The invention relates to a plate, in particular to an impregnated paper finished OSB composite floor and a preparation method. The impregnated paper finished OSB composite floor sequentially comprises an OSB base material layer, a veneer layer, a buffer paper layer, a balance paper layer and a sprayed decorative paper layer from bottom to top. The longitudinal static bending intensity of the OSB base material layer is larger than or equal to 50 MPa, and the water absorption thickness swelling rate of the OSB base material layer is smaller than or equal to 12%. The veneer layer is a poplar bleached veneer, and the thickness ranges from 0.6 mm to 1.2 mm. The buffer paper layer is impregnated kraft paper with the thickness of 0.4 mm to 0.6 mm, and the glue quantity is 80% or above. The weight of the balance paper layer ranges from 70 g to 80 g, and the glue quantity ranges from 100% to 120%. The weight of the sprayed decorative paper ranges from 70 g to 80 g, and the glue quantity ranges from 100% to 120%. The impregnated paper finished OSB composite floor has high environment friendliness, stability and water resistance.

The invention discloses a nano-copper type lubricating oil additive, which mainly comprises oil-soluble reactive nano-copper or the oil-soluble reactive nano-copper and oil-soluble nano titanium dioxide. The nano-copper type lubricating oil additive has high dispersity, high stability and high self-repairability, and simultaneously has the functions of saving oil, resisting and reducing abrasion, reducing noises and the like.

The invention provides an amino acid ionic liquid water-based additive and a preparation method and application thereof, belonging to the technical field of organic compounds of lubricating oil additives. The structural formula of the amino acid ionic liquid water-based additive provided by the invention is shown as a formula 1 which is described in the specification. The amino acid ionic liquid water-based additive provided by the invention is biodegradable, environment-friendly and pollution-free, and has good solubility. The prepared amino acid ionic liquid water-based additive can also befully dissolved in organic solvents with different polarities, such as chloroform, methanol and water, and has excellent anti-friction and anti-wear properties and high bearing capacity when used as alubricant of a steel/steel friction pair.

The invention discloses a graphene-hydrotalcite-like compound and a preparation method and an application thereof. The graphene-hydrotalcite-like compound is a compound of organic modified hydrotalcite and graphene. A graphene-hydrotalcite-like compound material is prepared for the first time and is taken as a diesel engine oil additive, so that the friction performance of the diesel engine oil is greatly improved; and moreover, the stability of the diesel engine oil is further improved. In addition, according to the preparation method of the graphene-hydrotalcite-like compound, the organic modified hydrotalcite is prepared by a one step hydrothermal method, and the method is simple and practical, and the prepared material is good in quality and high in yield.

The invention relates to anti-pitting self-repairing gear grease. The anti-pitting self-repairing gear grease comprises, by weight, 92-97% of a gear grease body and 3-8% of a self-repairing addition agent. According to calculation of the total mass of 100%, the self-repairing addition agent comprises, by weight, 50-70% of antioxidant, 10-25% of an anti-wear agent, 5-10% of an extreme pressure agent and 5-20% of organic molybdenum. The anti-pitting self-repairing gear grease has excellent antioxygen performance and extreme pressure wear resisting performance at different temperatures, can effectively prevent the surface of a gear from generating pitting, and can have a function of repairing the worn surface of the gear to a certain degree, so that the service life of the gear is prolonged.

The invention relates to use of trimethylolpropane oleate, a trimethylolpropane oleate containing the composition and use of the trimethylolpropane oleate containing the composition. By adding the trimethylolpropane oleate into lubricating oil, not only can excellent antifriction and abrasion resistance be obtained, but also the rust resistance of an oil product can be improved.

The invention belongs to the technical field of aluminum alloy profiles and particularly relates to an electrostatic spraying process for aluminum alloy profiles. The electrostatic spraying process for the aluminum alloy profiles comprises steps as follows: surfaces of aluminum alloys are polished, sprayed with water, washed and dried; a to-be-processed workpiece is degreased, sprayed with water and washed; the degreased workpiece is subjected to oil removal, sprayed with water and washed; the surface of the workpiece subjected to oil removal is sprayed with a diluted surface conditioner; the workpiece subjected to surface conditioning is phosphorized, the phosphorized workpiece is passivated, the surface of the passivated workpiece is sprayed with water and washed, the workpiece is dried and cooled, and the dried workpiece is obtained; the surface of the dried workpiece is sprayed with powdery paint in an electrostatic spraying manner by a spray gun and left to stay still, and the workpiece which is sprayed and left to stay still is obtained; the workpiece which is sprayed and left to stay still is conveyed to a baking room and then cooled to the room temperature. With the adoption of the electrostatic spraying process for the aluminum alloy profiles, the adhesive force, the hardness, the wear resistance, the acid resistance and other performance of surface coatings are remarkably improved, and the service life of the aluminum alloy profiles is prolonged effectively.

The invention relates to shield machine main bearing sealing grease and a preparation method thereof. The main bearing sealing grease is prepared from the ingredients in mass percent: 15 to 30% of base oil, 20 to 30% of lubricating grease, 12 to 20% of tackifier, 5 to 12% of degradable fiber, 20 to 40% of nanoparticle filling material and 1 to 5% of dispersing agent. The shield machine main bearing sealing grease prepared according the formula has excellent antifriction and anti-wear performance and an outstanding lubricating effect, can effectively prevent a rotating portion from being rusted and reduces abrasion of the rotating portion. In addition, the shield machine main bearing sealing grease has good water-resistant leakproofness and pumpability, prevents pipelines from being plugged, can more effectively prevent impurities from invading a shield head portion and damaging precise components of bearings and the like due to a fiber structure, prolongs service life of a main bearing and has stable product performance, no toxin and corrosion, environmental friendliness and a simple preparation technology.

The invention discloses a high-temperature gel lubricant composition and a preparation method of same. The composition is composed of, by weight, 0.1-10% of super-molecule gelator and 90-99.9% of basic lubricant oil. The high-temperature gel lubricant composition, as a lubricant for a steel/steel friction pair, can significantly improve tribological property of blank lubricant oil at high temperature, so that bearing capacity of the lubricant oil is greatly increased. The composition has excellent friction- reducing and anti-wearing performance and high-temperature resistance.