2411 results about "Lubrication Agents" patented technology

The invention discloses a pharmaceutical composition containing melogabalin besylate and a preparation method of the pharmaceutical composition. Belongs to the technical field of pharmaceutical preparations. Comprising melogabalin besylate and pharmaceutically acceptable auxiliary materials, the pharmaceutically acceptable auxiliary materials comprise a filler, a disintegrating agent, an adhesive, an antioxidant and a lubricant, the antioxidant comprises vitamin E succinic acid polyethylene glycol ester, and the lubricant comprises vitamin E succinic acid polyethylene glycol ester. The melogabalin besylate as the active ingredient accounts for 2-15% by weight of the pharmaceutical composition, preferably 2-10% by weight of the pharmaceutical composition. According to the pharmaceutical composition, antioxidant particles are prepared by adopting a fluidized bed granulation process, raw material medicines, the antioxidant particles and other auxiliary materials are mixed, tableted and coated, an antioxidant comprises vitamin E succinic acid polyethylene glycol ester and tartaric acid, and the prepared tablet has good stability.

A gas turbine engine includes a gearbox assembly that includes a gearbox and a gutter for collecting a gearbox lubricant scavenge flow from the gearbox. The gutter is characterized by a lubricant extraction volume ratio between 0.01 and 0.3. The lubricant extraction volume ratio defined by:VGVGB.VGis a gutter volume of the gutter and VGB is a gearbox volume. The gas turbine engine includes a lubrication system that includes a lubricant tank that stores lubricant, one or more primary gearbox lubricant supply lines, one or more secondary gearbox lubricant supply lines, and a lubricant pump for supplying the lubricant to the gearbox assembly through the primary gearbox lubricant supply lines and the secondary gearbox lubricant supply lines. The lubrication system modulates a mass flow rate of the lubricant to the gearbox assembly through the primary gearbox lubricant supply lines or the secondary gearbox lubricant supply lines.

The invention discloses an efficient-dissolution dotenorad tablet and a preparation method thereof, and relates to the technical field of tablet preparation. The tablet consists of 5-20 parts of a dotenorad active component, 10-30 parts of a disintegrating agent, 40-70 parts of a filling agent, 0.5-5 parts of a surfactant, 0.5-3 parts of a lubricant, 1-5 parts of an adhesive and 0.5-1 part of an antioxidant. The preparation method comprises the following steps: premixing active components and auxiliary materials, carrying out high-shear wet granulation to form porous structure particles, carrying out precise temperature-control drying through a fluidized bed, carrying out micronization treatment to regulate the specific surface area of the particles, and finally, carrying out high-pressure tablet forming through a magnesium stearate / aerosil compound lubrication system. The dissolution rate of the tablet in a medium with the pH value of 6.8 for 15 minutes reaches 85% or above, meanwhile, long-term stability is achieved by inhibiting oxidative degradation, and the tablet has the dual advantages of quick effect taking and stable storage.

The invention relates to the technical field of plastic cups, in particular to a transparent polypropylene medical plastic cup and a preparation method thereof. The plastic cup comprises the following components in parts by weight: 60-80 parts of polypropylene, 3-8 parts of polyformaldehyde, 5-15 parts of modified nano calcium carbonate, 3-5 parts of kaolin, 2-4 parts of talcum powder, 0.2-0.4 part of a nucleating agent, 0.5-1.5 parts of a lubricant, 1-3 parts of an antioxidant and 0.5-1.0 part of a stabilizer. The preparation method comprises the following steps: uniformly stirring polypropylene, polyformaldehyde, modified nano calcium carbonate, kaolin, talcum powder, a nucleating agent, a lubricant, an antioxidant and a stabilizer to obtain a mixture; the mixture is subjected to melt extrusion, granulation and injection molding to obtain the plastic cup, and the plastic cup not only has excellent mechanical properties, but also has excellent antibacterial properties, and can effectively prevent growth of bacteria.

The invention discloses a wear-resistant and high-temperature-resistant synchronous belt and a preparation method thereof. The wear-resistant and high-temperature-resistant synchronous belt comprises a synchronous belt framework and a synchronous belt rubber sheet, the synchronous belt rubber sheet is prepared from the following raw materials: a fluorosilicone thermoplastic polyurethane elastomer containing a benzene ring structure, an amino-containing hyperbranched liquid crystal polymer, methyl vinyl phenyl silicone rubber, epoxidized natural rubber, molybdenum sulfide nanosheets, reinforced fibers, bis (1-vinyl imidazole-2-) ketone, 2-acrylamido-2-methylpropanesulfonic acid, 4, 4 '-difluoro-1, 3, 4-trimethyl-1, 3, 4-trimethyl-1, 3, 4-trimethyl-1, 3, 4-trimethyl-1, 3, 4-trimethyl-1, 3, 4-trimethyl-1, 3, 4-trimethyl-1, 3, 4-trimethyl-1 The high-temperature-resistant rubber is prepared from 2, 6-hydroxy-2-cyanobenzothiazole, bis (3-aminophenyl) 3, 5-bis (trifluoromethyl) phenylphosphine oxide, a catalyst, a coupling agent, a vulcanizing agent, an anti-aging agent, a scorch retarder and a lubricating agent. The synchronous belt is good in mechanical property, sufficient in high-temperature resistance and cold resistance, good in wear resistance and excellent in aging resistance and flame retardance.

The invention discloses an absorbable suture line for surgical suture and a preparation method thereof, and relates to the technical field of medical materials. The absorbable suture line for surgical suture is prepared from the following raw materials in parts by weight: 50 to 65 parts of polylactic acid, 15 to 20 parts of polyglycolic acid, 3 to 5 parts of sodium carboxymethyl cellulose, 3 to 8 parts of a toughening agent, 3 to 6 parts of an antibacterial agent, 0.3 to 0.8 part of a lubricating agent, 1 to 2 parts of sodium hyaluronate and 5 to 10 parts of polyvinyl alcohol. The toughening agent is obtained by reacting hydroxyethyl acrylate with ethylenediamine to generate a four-arm compound and then reacting with 6-caprolactone and DL-lactide. The absorbable suture line for surgical suture prepared by the invention has excellent tensile property and antibacterial property, and can meet the application requirements of clinical medical treatment.

Disclosed herein is a urinary catheter generally configured for self-deployment. The catheter includes a closed volume within the lumen of the catheter containing a lubricant. The proximal end and the distal end of the catheter tube are coupled with a handling member disposed along the catheter tube to define a compact packaging shape of the catheter tube including one or more loops. The closed volume is breached by separating the proximal and distal ends away from the handling member in a single step via simultaneous application of separating forces to the proximal and distal ends. The handling member includes a pull ring for applying an oppositely directed separating force to the handling member. The catheter includes an inlet section configured of insertion into the patient and an inlet collar is slidably coupled with the inlet section. where in the inlet collar serves as a guide during insertion of the catheter.

The invention relates to the technical field of plastic packaging preparation, in particular to an anti-aging plastic packaging material and a preparation method thereof.The anti-aging plastic packaging material is prepared from, by mass, 100-140 parts of polylactic acid, 60-80 parts of PBAT, 2-5 parts of a composite anti-aging agent, 1-2 parts of a lubricant, 2-4 parts of a flame retardant and 3-6 parts of a compatilizer; the composite anti-aging agent comprises a modified anti-aging agent obtained by compounding functionalized montmorillonite and modified silicon dioxide, the functionalized montmorillonite is carnosic acid grafted rare earth ion modified montmorillonite, and the modified silicon dioxide is epoxy methyl oleate grafted silicon dioxide. According to the anti-aging plastic packaging material provided by the invention, a plastic material system with multiple protection mechanisms is constructed through the synergistic effect of all the components, and the prepared plastic packaging material not only keeps good biodegradability, but also has excellent ultraviolet light resistance and oxidation resistance.

A gearbox assembly includes a gearbox and a gutter for collecting a gearbox lubricant scavenge flow from the gearbox. The gutter is characterized by a lubricant extraction volume ratio between 0.01 and 0.3, and given byVGVG⁢B.VG is a gutter volume of the gutter and VGB is a gearbox volume. A gas turbine engine includes a combustion section and the gearbox assembly. A fuel delivery system includes a fuel supply line for delivering fuel to the combustion section. A lubrication system includes a lubricant supply line for delivering lubricant to the gearbox assembly. A thermal management system includes a fuel-lubricant heat exchanger for cooling the lubricant with the fuel. The thermal management system selectively directs the fuel through fuel bypass lines or the lubricant through lubricant bypass lines to bypass the fuel-lubricant heat exchanger based on a fuel temperature or a lubricant temperature.

The invention relates to the technical field of high-performance polyester, in particular to a high-strength low-shrinkage polyester fiber and a preparation method thereof. The defects that existing polyester fibers are poor in strength and shrinkage resistance are overcome. The preparation method comprises the following steps: mixing the modified resin, the modified nano silicon dioxide, the composite antioxidant, the composite nucleating agent and the composite lubricant, and carrying out melt spinning. Wherein the modified resin is prepared from the following raw materials: dimethyl terephthalate, isophthalic acid, ethylene glycol and isosorbide; the modified nano silicon dioxide comprises nano silicon dioxide, KH570 and silver nitrate; the composite antioxidant comprises an antioxidant 1010, an antioxidant 168 and an antioxidant 1222; the composite nucleating agent comprises sodium benzoate and nano montmorillonite; the composite lubricant is prepared from ethylene bis stearamide and pentaerythritol stearate. The prepared polyester fiber is high in strength, high in shrinkage resistance and suitable for manufacturing of outdoor equipment.

The invention relates to a flame-retardant toughening agent for a polypropylene material and a preparation method of the flame-retardant toughening agent, and belongs to the technical field of macromolecular flame-retardant toughening, and the preparation method comprises the following steps: firstly combining an aromatic compound with melamine, and then combining with a flame-retardant material to obtain a flame-retardant compound; the preparation method comprises the following steps: combining itaconic anhydride, a modified toughening agent, octavinyl silsesquioxane and polypropylene through graft copolymerization to obtain grafted polypropylene; combining the flame-retardant compound with grafted polypropylene to obtain a modified flame-retardant toughening agent; and mixing the modified flame-retardant toughening agent with an antioxidant and a lubricant, and carrying out melt blending extrusion to obtain the flame-retardant toughening agent for the polypropylene material. According to the technical scheme, the aromatic compound, the melamine and the flame-retardant material are combined, so that the flame-retardant property of the polypropylene material is effectively improved; the itaconic anhydride, the modified toughening agent and the octavinyl silsesquioxane are combined with the polypropylene, so that the impact toughness and the mechanical property of the polypropylene material are enhanced, and the comprehensive performance of the flame-retardant toughening agent is generally improved.

The invention provides a polyester-based composite functional master batch as well as a preparation method and application thereof. The polyester-based composite functional master batch is prepared from the following components in parts by weight: 54 to 100 parts of polyethylene glycol terephthalate-1, 4-cyclohexanedimethanol ester, 4 to 27 parts of a lubricating agent, 0.5 to 2 parts of a compatilizer, 0.5 to 10 parts of a light diffusion agent, 1 to 8 parts of a dispersing agent and 4 to 10 parts of tackifying resin. The polyester-based composite functional master batch provided by the invention is added in the process of processing and forming a polyethylene glycol terephthalate-1, 4-cyclohexanedimethanol ester-based light diffusion plate, so that the flowability and the demolding property can be improved, and the prepared product has excellent light transmittance and haze at the same time.

The invention discloses a lubricant composition and application thereof in processing of a high-weather-resistance PC hollow plate, and relates to the technical field of lubricant compositions. The lubricant composition comprises the following components in parts by mass: 40-60 parts of base oil, 5-15 parts of a weather-resistant stable additive, 3-8 parts of an anti-wear reagent at extreme pressure, 2-6 parts of a dispersing agent, 1-4 parts of an antioxidant, 0.5-2 parts of a coupling agent and 20-30 parts of a solvent. Through the molecular collaborative design of the polar base oil and the solvent, the thermal decomposition tendency in the processing process is remarkably reduced, and a lubricating system is promoted to be upgraded to a low-volatilization and low-pollution green process direction. A weather-resistant additive molecular skeleton with anti-oxidation and anti-ultraviolet characteristics is innovatively constructed, integration of multiple protection mechanisms in material processing and service stages is realized, and dependence on secondary addition of auxiliaries in a traditional process is reduced.

The invention relates to the technical field of high polymer materials, and provides impact-resistant polystyrene and a preparation method thereof. The impact-resistant polystyrene comprises the following raw materials in parts by weight: 70-80 parts of polystyrene, 10-15 parts of styrene butadiene rubber, 10-20 parts of wood fiber, 1-2 parts of an antioxidant, 2-3 parts of a lubricant and 0.5-1 part of a vulcanizing agent. The styrene-butadiene rubber is composed of first styrene-butadiene rubber and second styrene-butadiene rubber which have different styrene mass contents. According to the technical scheme, the problem of poor impact resistance of polystyrene in related technologies is solved.

The invention relates to the technical field of cable coating materials, and particularly discloses a B1-grade cable material as well as a preparation method and application thereof. The cable material provided by the invention comprises matrix resin, a compatilizer, a flame retardant, a lubricant, an antioxidant, a smoke suppression charring agent, nano silicon dioxide and a silane coupling agent, the matrix resin is a mixture of linear low density polyethylene resin, an ethylene-octylene copolymer, metallocene polyethylene and an ethylene-vinyl acetate copolymer; the flame retardant is a mixture of magnesium hydroxide, aluminum hydroxide and hydrotalcite; the smoke suppression charring agent is a mixture of hydrous magnesium silicate and modified montmorillonite; the silane coupling agent is a mixture of vinyl silane and diamino silane. According to the cable material provided by the invention, the specific matrix resin, the flame retardant, the smoke suppression charring agent and the silane coupling agent are combined with auxiliaries such as the compatilizer, the lubricant, the antioxidant and the nano silicon dioxide to serve as raw materials, so that the flame-retardant effect of the B1-grade cable material is greatly improved.

The invention discloses a high-strength polypropylene urine cup and a preparation process thereof, and relates to the technical field of polypropylene. The high-strength polypropylene urine cup is prepared from a high-strength polypropylene material through plasticizing, injection molding and compression molding. The high-strength polypropylene material is prepared from the following raw material components in parts by weight: 100 parts of homo-polypropylene, 10 to 20 parts of modified polypropylene, 10 to 15 parts of maleic anhydride grafted polypropylene, 5 to 12 parts of modified talcum powder, 5 to 10 parts of high-density polyethylene, 0.1 to 0.2 part of beta-nucleating agent, 2 to 4 parts of flexibilizer, 1.5 to 3 parts of lubricant, 0.5 to 1 part of antioxidant and 1 to 2 parts of antistatic agent. Through the synergistic effect of the modified polypropylene, maleic anhydride grafted polypropylene, high-density polyethylene, modified talcum powder and other raw materials, the high-strength polypropylene material with high strength and high transparency is comprehensively obtained.

The invention relates to a solvent-resistant medical connecting line sheath material and a preparation method thereof, and belongs to the technical field of high polymer materials. The sheath material is prepared from the following components: 38 to 44 weight percent of passivated toughening agent, 1.5 to 1.8 weight percent of heat stabilizer, 0.7 to 0.9 weight percent of lubricant, 0.12 to 0.15 weight percent of antioxidant and the balance of PVC (Polyvinyl Chloride) resin, the passivated toughening agent is prepared by the following steps: carrying out amine ester exchange reaction on 4-hydroxybutylamine and dimethyl difluoromalonate, introducing an alcohol-terminated hydroxyl group, carrying out substitution with dichloromethylvinylsilane to form a fluorine-containing chain compound, and finally carrying out double bond addition on methyl thioglycolate and a side chain; the passivation toughening agent is compatibilized through branched chain methyl ester and dynamically coordinated with a PVC molecular chain through a side chain thioether group, weakens the acting force between PVC chains, plays a good toughening role, inhibits dissolution through physical crosslinking, shields and passivates the PVC molecular chain, and relieves swelling of PVC in a solvent.

The invention discloses an anti-aging flame-retardant polyvinyl chloride material and a preparation method thereof. The anti-aging flame-retardant polyvinyl chloride material comprises the following raw material components in parts by weight: 100 parts of PVC resin, 0.6-2.4 parts of a lubricant, 15-27 parts of a plasticizer and 14-25 parts of a composite flame-retardant anti-aging reinforcing filler, wherein the composite flame-retardant anti-aging reinforcing filler is obtained by sequentially carrying out antioxidant loading and polymer grafting modification on a compound of graphene oxide, basic magnesium sulfate whiskers and mesoporous alumina. The prepared polyvinyl chloride has excellent aging resistance, flame retardance and mechanical strength, is good in thermal stability and excellent in comprehensive performance, and has a wide market application prospect.

The invention relates to the technical field of bearing seats, and discloses a self-lubricating dustproof bearing seat which comprises an upper end cover, a lower end cover hinged to the lower portion of the upper end cover, a self-lubricating mechanism and a dustproof sealing ring which are arranged in the upper end cover and the lower end cover, a shaft sleeve arranged in the self-lubricating mechanism, and a shaft core movably installed in the shaft sleeve and the dustproof sealing ring. The self-lubricating mechanism comprises an external backflow assembly rotationally connected to the inner wall of the upper end cover and the inner wall of the lower end cover and an internal backflow assembly rotationally connected to the outer wall of the shaft sleeve, a reasonable lubricating channel path is obtained through the arranged oil storage assembly, the movable assembly and the rolling assembly, it is ensured that a lubricating agent can evenly and smoothly reach all lubricating points, and the lubricating efficiency is improved. Lubricating oil in the oil storage cavity flows into the oil outlet pipe through the oil outlet groove and then flows into the oil guide groove, so that the contact faces of the rolling wheel and the bearing outer ring and the bearing inner ring are lubricated, and the effect of improving the overall operation quality and reliability of equipment is achieved.

The invention relates to the technical field of polypropylene materials, in particular to a polypropylene material for logistics turnover and a preparation process thereof. The polypropylene material for logistics turnover is prepared from the following components in parts by weight: 80 to 100 parts of polypropylene, 10 to 15 parts of modified nano zinc oxide, 5 to 10 parts of talcum powder, 3 to 5 parts of nucleating agent, 0.5 to 1.5 parts of lubricant, 0.5 to 1.0 part of antioxidant and 0.5 to 1.0 part of stabilizer. The preparation method comprises the following steps: S1, uniformly stirring polypropylene, modified nano zinc oxide, talcum powder, a nucleating agent, a lubricant, an antioxidant and a stabilizer to obtain a mixture; s2, adding the mixture into a twin-screw extruder for melt blending, extrusion and foaming to obtain the polypropylene material for logistics turnover, which not only has excellent mechanical properties, but also has excellent antibacterial properties and aging resistance.

The invention discloses a halogen-free flame retardant antistatic nylon, wherein the raw materials of the nylon mainly include a PA6 matrix, a POE graft, a nylon black masterbatch and a modified additive; the modified additive includes a flame retardant-antistatic synergistic additive, a lubricant, an antioxidant and a dispersant; the flame retardant-antistatic synergistic additive includes a microencapsulated halogen-free flame retardant and a compound of modified carbon nanotubes and carbon fibers; the modified carbon nanotubes are grafted with spiropentaerythritol dichlorophosphate (SPDPC) by an organic silicon coupling agent to form a bifunctional organic silane compound. The present application provides a halogen-free flame retardant antistatic nylon and a preparation method and application thereof, which are used to improve the flame retardant and antistatic effects of PA6 and further increase the mechanical properties of PA6.

The invention relates to a high-thermal-conductivity epoxy resin conductive adhesive containing a composite conductive filler and a preparation method of the high-thermal-conductivity epoxy resin conductive adhesive. The high-thermal-conductivity epoxy resin conductive adhesive containing the composite conductive filler comprises 6-16% of graphene oxide modified epoxy resin, 0.6-3% of a curing agent, 0-1% of a curing accelerator, 2-7% of epoxidized soybean oil modified single-layer / multi-layer carbon nanotubes, 3-7% of carbon fibers, 3-7% of nano silver powder, 40-70% of micron silver powder, 5.0-15.0% of a surface treating agent, 0.3-2.7% of a coupling agent, 0.5-1.5% of a dispersing agent, 0.1-0.3% of an antioxidant and 0.1-0.3% of a lubricant. 0.5% and the balance of a solvent. The graphene oxide modified epoxy resin and the epoxidized soybean oil modified single-layer / multi-layer carbon nanotubes are utilized to improve the dispersion stability of the filler, the modified single-layer / multi-layer carbon nanotubes are adopted as a short-range conductive additive, the carbon fibers are adopted as a long-range conductive additive, and the graphene oxide modified epoxy resin and the epoxidized soybean oil modified single-layer / multi-layer carbon nanotubes and the carbon fibers cooperate to improve the conductivity. The conductive adhesive disclosed by the invention is high in heat conductivity, low in volume resistivity and high in tensile strength and bending strength, and has a wide application prospect in the fields of automotive electronics, wind power photovoltaics, LEDs (Light Emitting Diode), LCDs (Liquid Crystal Display) and the like.

The invention discloses a special oiling agent for paddle-free DTY (Draw Textured Yarn) as well as a preparation method and application of the special oiling agent. The oiling agent comprises the following components in percentage by mass: 30-50% of a lubricant, 10-20% of an antistatic agent, 15-25% of a bundling agent, 1-5% of an antioxidant, 5-10% of an emulsifier and the balance of deionized water. According to the invention, the traditional sizing process is omitted in fiber processing. The oiling agent can significantly improve the fiber performance and reduce the production cost, has excellent environmental protection property, and is suitable for efficient production of synthetic fibers such as terylene, chinlon and the like. After being treated by the oiling agent, the oiling agent forms a compact protective film on the surface of the fiber, has bundling and lubricating functions, does not need additional sizing, can reduce fiber hairiness, improve breaking strength and remarkably improve the antistatic performance, and the oiling agent containing the metal salt multi-effect antistatic agent can remarkably improve the antistatic performance and also can improve the anti-static performance of the fiber. The anti-ultraviolet performance and the antibacterial performance of the fiber can be improved at the same time.

The invention discloses a high-hydrolysis-resistance glass fiber reinforced polyester material, which is prepared from the following raw materials in parts by weight: 36 to 65 parts of mixed modified polyester resin, 9 to 25 parts of glass fiber, 6 to 11 parts of hydrolysis-resistant agent, 4 to 15 parts of toughening agent, 2 to 8 parts of buffering agent, 0.2 to 0.5 part of compatilizer, 0.1 to 1.0 part of lubricating agent and 3 to 10 parts of halogen-free flame retardant, the modified polyester resin comprises organic silicon modified polyester resin and acrylate modified polyester resin. The modified mixed polyester resin material is used as the raw material of the polyester material, so that the polyester material can fully combine the advantages of the organic silicon modified polyester resin and the polyacrylate modified polyester resin, and terminal carboxyl groups in a polyester molecular chain are reduced by using the mixed modified polyester resin, so that the hydrolysis reaction is inhibited, and the service life of the polyester material is prolonged. Therefore, the hydrolysis resistance of the polyester material is improved.

The invention provides a secondary sizing agent as well as a preparation method and application thereof. The secondary sizing agent comprises the following components: a main film-forming agent, an auxiliary film-forming agent, a lubricant, a silane coupling agent and water, wherein the main film-forming agent is an aqueous epoxy solution, the auxiliary film-forming agent comprises a low molecular weight epoxy emulsion and an aqueous polyurethane emulsion, and the lubricant comprises an organosilicon lubricant and an ionic lubricant. In the scheme, the secondary sizing agent formed by mixing the main film-forming agent, the auxiliary film-forming agent, the lubricant and the silane coupling agent with proper types and proper contents can endow the silicon carbide fiber with excellent wear resistance, folding resistance and mechanical properties. Compared with one-time sizing, the number of times of wear resistance of the fiber yarn is increased by more than 10 times, the yarn breaking rate in the fabric processing process is greatly reduced from 10% to 0.5%, the surface smoothness of the prepared fiber fabric is greatly improved, the performance of the composite material prepared through the impregnation method is integrally improved, the bending strength is obviously improved, and the performance requirement of the three-dimensional fabric can be completely met.

The invention belongs to the field of hydraulic oil, and particularly discloses a flame-retardant hydraulic oil composition and a preparation method thereof. The hydraulic oil composition is prepared from the following components in parts by weight: 67 to 97 parts of main base oil, 5 to 30 parts of auxiliary base oil, 1.2 to 1.5 parts of a lubricating agent, 1.5 to 2.0 parts of an antioxidant, 0.03 to 0.06 part of a corrosion inhibitor, 0.01 to 0.08 part of a demulsifying agent and 0.01 to 0.08 part of a de-foaming agent, the auxiliary base oil is one of trimethylolpropane trinonanoate, trimethylolpropane caprylic capric acid ester and trimethylolpropane caprylic laurate; the components are sequentially mixed to obtain the flame-retardant hydraulic oil. According to the invention, a specific main-auxiliary base oil system is compounded with other additives, so that the final oil product has excellent anti-oxidation characteristic, the use temperature upper limit is improved, the service life of the oil product is further prolonged, and the stability and low-temperature pumping capacity of the oil product in the use process are improved.

The invention provides an epoxy resin packaging bonding material with high bonding stability and a preparation method thereof. The packaging bonding material is prepared from the following raw material components: 8 to 18 percent of graphene oxide modified epoxy resin, 0.8 to 4.0 percent of a curing agent, 0 to 1 percent of a curing accelerator, 0.4 to 2.0 percent of a silane coupling agent, 2 to 7 percent of nano carbon black, 2 to 7 percent of carbon fiber, 40 to 60 percent of flaky silver powder, 4 to 8 percent of spherical silver powder, 4.4 to 13.6 percent of a surface treating agent, 4 to 6 percent of a reactive diluent, 0.5 to 1.5 percent of a toughening agent, 0.5 to 1.5 percent of a dispersing agent, 0.1 to 0.5 percent of a lubricating agent and the balance of a non-reactive diluent. Graphene oxide is utilized to modify epoxy resin, the dispersion stability of the filler is improved, modified carbon black is adopted as a short-range conductive additive, carbon fibers are adopted as a long-range conductive additive, the modified carbon black and the carbon fibers synergistically improve the conductivity, and the reinforcing effect is achieved. The packaging bonding material disclosed by the invention has the characteristics of low volume resistivity, high tensile strength and bending strength, high bonding stability and the like, and has wide application prospects in the fields of automotive electronics, wind power photovoltaics, LEDs (Light Emitting Diode), LCDs (Liquid Crystal Display) and the like.

The invention relates to the field of thermoplastic elastomer materials, in particular to a TPEE synthetic brush wire and a preparation method thereof.The TPEE synthetic brush wire is prepared from, by weight, 55-75 parts of TPEE resin, 25-45 parts of polyester resin, 5-10 parts of compatilizer, 8-16 parts of modified polysiloxane, 12-24 parts of plasticizer, 1-3 parts of lubricant, 0.3-1 part of antioxidant and 0.6-1.2 parts of stabilizer. The TPEE resin and the polyester resin are used as main raw materials, the compatilizer, the modified polysiloxane and the plasticizer are added as auxiliary raw materials, and the lubricant, the antioxidant and the stabilizer are added as additives, so that the prepared brush wire not only has the advantages of proper hardness and rigidity and high strength, but also has better antibacterial performance.

The invention provides an outdoor hard polyvinyl chloride material and a preparation method and a product thereof. The outdoor hard polyvinyl chloride material is prepared from the following raw materials in parts by weight: 80 to 100 parts of polyvinyl chloride resin, 15 to 50 parts of chlorinated polyvinyl chloride resin, 50 to 100 parts of acrylonitrile-styrene-acrylate terpolymer, 3 to 15 parts of impact modifier, 0.1 to 5.0 parts of processing aid, 0.1 to 5.0 parts of lubricant and 0 to 10 parts of other aids. The impact modifier comprises a methyl methacrylate-butadiene-styrene terpolymer and chlorinated polyethylene, and the processing aid comprises ACR acrylic resin. The lubricant includes a first lubricant and a second lubricant. The melting point of the first lubricant is 20-70 DEG C, and the melting point of the second lubricant is 100-115 DEG C. The outdoor rigid polyvinyl chloride material has the advantages of excellent compatibility of the components, high impact strength, high weather resistance and low specific gravity, and meets the use requirements of base station antenna housing materials.