117results about How to "Good antioxidant properties" patented technology

The invention discloses application of epoxy cardanol as a bio-based hindered phenolic antioxidant. The epoxy cardanol as the bio-based hindered phenolic antioxidant is prepared by comprising the following steps: with cardanol as a raw material, under the action of a catalyst, dropwise adding a peroxy source and carrying out epoxidation reaction at 40 to 70 DEG C for 2 to 5 hours so as to prepare a crude epoxy cardanol, and carrying out aftertreatment so as to obtain an epoxy cardanol antioxidant. According to the invention, thermal oxidative aging resistance of the bio-based hindered phenolic antioxidant in the invention is superior to the thermal oxidative aging resistance of a general hindered phenolic antioxidant, i.e., 2,6-di-tert-butyl-4-methylphenol. Meanwhile, the bio-based hindered phenolic antioxidant has the advantages of wide raw material sources, low price, simple preparation process, low toxicity and environmental protection, can be extensively applied in vegetable oil and biodiesel, and has good application and development prospects.

The invention discloses dog food capable of improving antioxidant ability and intestinal health conditions of dogs and a preparation method thereof. The dog food is manufactured by adding tea polyphenol with additive amount of reaching 0.1-1 part, by weight, into 100 parts, by weight, of dog food, and going through procedure of mixing, stirring, extruding, puffing and the like. The remaining components of the dog food comprise, by weight, 15-25 parts of refined rice, 15-25 parts of bean pulp, 15-35 parts of corn, 5-15 parts of wheatmeal, 10-25 parts of fish meal, 5-10 parts of yeast powder, 1-3 parts of calcium hydrophosphate, 0.1-0.5 part of edible salt, 0.1-0.5 part of vitamin premix, 0.1-0.5 part of mineral premix, and 0.05-0.15 part of potassium sorbate. According to the dog food, tea polyphenol is used as functional feed supplements in the production of commodity dog food. Consequently, the dog food can effectively improve the antioxidant ability and the intestinal health conditions of dogs, and achieves double effects of guaranteeing the quality of commodities and caring health in a functional mode.

This invention relates to a kind of water-thermo electrophoresis deposition process which use gradient silicic acid yttrium smear layer. This process applies wet chemistry method to synthesize gradient component and three kinds of expected crystal phase structure silicic acid yttrium micropower, then dispersing them in liquid medium, applying water-thermo electrophoresis deposition process in low temperature to gain satisfactory gradient silicic acid yttrium smear layer, solving the problem of heat injury of basis body in the process. The feature is: cohering strength of smear layer and basis body exceed 28MPa; excellent antioxygen performance; valid protection to carbon material at 1600 DEG C can last 260hours; oxidizing weight loss is below 2%.

The invention aims to provide a low-activation martensitic heat-resistant steel with oxidation resistance and liquid lead-bismuth corrosion resistance. The heat-resistant steel comprises the following alloy elements in percentage by mass: C not less than 0.09% and not more than 0.12%, Cr not less than 8.8% and not more than 9.2%, W not less than 1.48% and not more than 1.54%, V not less than 0.17% and not more than 0.23%, Ta not less than 0.12% and not more than 0.16%, Mn not less than 0.48% and not more than 0.50%, Si not less than 0.40% and not more than 0.80%, N less than 0.010%, Al less than 0.010%, Ni less than 0.005%, Mo less than 0.005%, Nb less than 0.010%, Co less than 0.005%, Ti less than 0.010%, Cu less than 0.010%, O less than 0.005%, P less than 0.005%, S less than 0.005%, and a matrix being Fe. The heat-resistant steel has excellent mechanical performance, high-temperature characteristic, oxidation resistance and liquid metal corrosion resistance.

The invention relates to a lubricant composition for an intermediate-speed trunk piston-type engine of a ship. The lubricant composition comprises A) a composite antioxidant composing at least components of 1, an alkylated diphenylamine antioxidant, 2, a thiophenolic ester antioxidant and 3, an unessential phenolic thioether antioxidant, B) a polyisobutylene succinimide ashless dispersant, C) a mixture of magnesium sulfate and sulfurized calcium alkyl phenate, D) at least one zinc dialkyldithiophosphate, E) dialkyldithiocarbamate, F) one or more metal deactivators, G) one or more ashless friction modifiers, and H) a main amount of lubricating base oil. The lubricant composition utilizes optimized combination of the multiple ashless antioxidants, is compounded with the appropriate clearing agent and the dispersant, has a synergistic effect of the additives, can satisfy high-temperature antioxidation requirements of lubricating oil for an intermediate-speed trunk piston-type engine of a ship, and has excellent piston cleanliness, high/low-temperature wear resistance and a good viscosity increasing control capacity.

The invention relates to a preparation method of a composite alloy coating on a tantalum-tungsten alloy. The preparation method comprises the following steps of 1, MoSi2 coating slurry preparation, 2, MoSi2 coating high-temperature sintering, 3, Hf-Ta alloy coating slurry preparation, and 4, Hf-Ta alloy composite coating sintering. According to the preparation method, the product surface is spray-coated with the prepared MoSi2 coating as a transition layer, and the surface of the transition layer is spray-coated with an Hf-Ta alloy coating. The preparation method solves the problem of Hf-Ta alloy coating and base material bonding and tantalum-tungsten alloy high-temperature oxidation. The prepared composite alloy coating is uniform and compact, has no defects such as holes and cracks and has good oxidation resistance.

The invention discloses high-vacuum pump oil which is obtained by adding ash-free additive to compressed and distilled high-vacuum base oil. The high-vacuum pump oil comprises the following components in percentage by weight: 0.3%-1% of antioxidant, 0.02%-0.1% of metal passivator, 0.01%-3% of anti-wear reagent at extreme pressure, 0.02%-1% of antirust agent, 0.005%-0.05% of demulsifying compound and 0.05%-0.05% of anti-foaming agent, wherein the antioxidant comprises amine antioxidant and/or phenolic antioxidant; the amine antioxidant comprises high-polymer diphenylamine; the phenolic antioxidant comprises high-polymer mixed phenol. The high-vacuum pump oil disclosed by the invention has high-limit vacuum degree, and total limit pressure of 1*10<-4>kPa; and moreover, the vacuum oil is further provided with excellent oxidation resistance, high temperature resistance and anti-wear performance at extreme pressure without affecting the vacuum.

The invention relates to a connection occlusion agent for an oil extraction conical screw rod of a screw pump and a preparation method thereof. The connection occlusion agent comprises the following components in part by weight: 4 to 10 parts of white silver powder, 2 to 8 parts of copper powder, 1 to 5 parts of graphite powder, 18 to 35 parts of poly alpha olefins synthetic oil, 21 to 34 parts of diethylsilicone fluid, 4 to 16 parts of polyisobutene, 3 to 12 parts of fumed silica, 4 to 15 parts of titanium dioxide, 3 to 12 parts of teflon powder, 0.5 to 3 parts of antioxygen and 0.2 to 1 part of antirust agent. The connection occlusion agent for the oil extraction conical screw rod of the screw pump can adapt to the working environment with moderate intensity of acid, alkali and salt, has a good lubricating property, and can be used in an environment of -45 DEG C to 220 DEG C for a long time. The occlusion agent realizes the goal that a screw rod has the properties of self-lock, seal and corrosion resistance in production and operation processes, and has excellent detachability when repairing a well. After the connection occlusion agent is used in the device, the well repairing work period is shortened, and the worker labor intensity is reduced, and the maintenance cost is lowered.

The invention discloses long-life oil jet rotary air compressor oil composition. The composition is prepared from components shown in the specification in percentage by mass.

The invention relates to a smelting separation furnace lining material and a preparation method thereof. According to the technical scheme, the preparation method of the smelting separation furnace lining material comprises the following steps: mixing 48-60wt% of magnesite particles and 10-22wt% of silicon carbide particles, adding 3-4wt% of phenolic resin, mixing, then adding mixed powder, mixing, moulding, and then drying for 24 hours at the temperature of 180-220 DEG C, so that the melting separation furnace lining material is obtained; the mixed powder is obtained by mixing 10-15wt% of Ti(C,N)-SiC-C composite powder, 4-7wt% of magnesite fine powder, 1-3wt% of silicon carbide fine powder, 2-3wt% of crystalline flake graphite fine powder, 0.5-1wt% of carbon black, 1-3wt% of alpha-Al2O3 micro powder, 0.5-1.5wt% of asphalt powder, 2-4wt% of Si powder and 0.5-1wt% of B4C powder. The smelting separation furnace lining material has the characteristics of high temperature resistance, washing resistance, strong FeO and TiO2 corrosion resistance, good oxidation resistance and excellent thermal shock performance.

The invention relates to a moisturizing composition and a skin protection product, which belong to the technical field of daily chemicals. The moisturizing composition provided by the invention mainly comprises the following raw materials in parts by weight: 1-4 parts of jania rubens extracts, 1-4 parts of hydrolyzed align, 0.5-3 parts of polygonum cuspidatum root extracts and 0.5-2 parts of gotu kola extracts. Through matching of all the raw materials, the moisturizing composition has the excellent effects of moisturizing and promotion of synthesis of collagens. In addition, the invention also provides the skin protection product containing the moisturizing composition. The skin protection product has the advantages of realizing deep and lasting moisturizing, obviously smoothing and tightening and skin and smoothing wrinkles, and the roughness and the glossiness of the skin can be improved from inside to outside in a lasting way, so that the status of the skin is improved fundamentally.

The invention discloses a tea polyphenol composite coating preservative and a preparation method thereof. The composite coating preservative is prepared from the following raw materials according to mass concentration: 2.5-5.5% of collagen, 0.5-3.5% of glycerol, 0.5-4.5% of gelatin, 0.1-1% of tea polyphenol, and deionized water. According to the preparation method, tea polyphenol, collagen, gelatin, and glycerol are used as main raw materials to prepare the composite coating preservative, and then the preservative is spread on hawthorn fruits. After 20 day's storage at room temperature, researchers research changes of hardness, vitamin C, sensory quality, weight loss rate and other indexes of hawthorn fruits, so as to evaluate the preservation effect of the composite coating preservative on hawthorn fruits. The hawthorn fruit treated by the coating preservative changes more slowly in weight loss rate, sensory quality, hardness and vitamin C than the hawthorn fruit not spread with the coating preservative. The preservative effectively prolongs the shelf life of the hawthorn fruits. The coating preservative with best preservation effect is prepared from the following raw materials: 4.0% of collagen, 3.0% of gelatin, 0.2% of tea polyphenol, and 1.0% of glycerol.

The invention relates to an amorphous boron contained sliding nozzle refractory brick made by combing unfired metal with aluminum, carbon and zirconium materials and a production method of the amorphous boron contained sliding nozzle refractory brick made by combing the unfired metal with the aluminum, carbon and zirconium materials. Raw materials of the sliding nozzle brick comprise 0.2% to 5% of amorphous boron, 55% to 78% of corundum, 5% to 15% of silicon carbide, 10% to 20% of zirconium mullite, 2% to 5% of graphite, 3% to 7% of aluminum-silicon alloy, 1% to 3% of lithium base bentonite and phenolic resin, and the amount of phenolic resin is 4% to 6% of the total amount of the raw materials. When the sliding nozzle brick is produced, powder and granule are respectively mixed, phenolic resin is added, pug is obtained by evenly mixing, and the sliding nozzle brick is obtained through molding and drying. The sliding nozzle brick possesses excellent inoxidizability and high strength and is good in performance of molten steel erosion resistance, anti-scouring capability, antioxidation, thermal shock resistance and the like. Compared with an unfired aluminum-carbon sliding nozzle brick, a product is excellent in heat shock resistance and anti-erosion performance, is capable of being used in a large-scale steel ladle and is long in service life. The production method of the amorphous boron contained sliding nozzle refractory brick made by combing the unfired metal with the aluminum, carbon and zirconium materials is simplified in process, short in production cycle, free from polluting the environment and good in comprehensive benefits.

The invention discloses a noble metal ceramic film, wherein the noble metal ceramic film comprises a noble metal alloy/ceramic composite layer, and a ceramic passivation layer, wherein the noble metal alloy particles in the composite layer are embedded into a ceramic phase; the ceramic passivation layer is covered at the surface of the composite layer; matrix metal of the noble metal alloy is Ag; the doped metal is Al or Ti; the ceramic phase is Al2O3 or SiO2; the ceramic passivation layer is Al2O3 or SiO2 passivation layer. The invention also discloses a preparation method of the noble metal ceramic film. The method is carried out by adopting a multi-target magnetron co-sputtering technology; the preparation technology is simple; components and a micro-structure of the film are easily regulated and controlled; the obtained noble metal ceramic film has strong surface plasma resonance absorption characteristics in ultraviolet and visible light areas, and has excellent high temperature resistance.

The invention relates to a superhigh temperature resistant ceramic matrix composite material with self-healing ability and a preparation method thereof. The preparation method comprises the steps of: using an SiBNC fiber preform to prepare an SiC interface by chemical vapor deposition, thus obtaining an SiBNC fiber preform containing an interphase, wherein the reaction gas of the chemical vapor deposition is trichloromethylsilane; taking a mixed solution of polyborosilazane and toluene as a precursor solution, and densifying the SiBNC fiber preform containing the interphase by means of precursor impregnation pyrolysis; and further conducting densification by precursor impregnation pyrolysis repeatedly, thus obtaining the continuous fiber reinforced ceramic matrix composite material. The continuous fiber reinforced ceramic matrix composite material provided by the invention can improve the high-temperature resistance of the composite material up to 1900DEG C, and has self-healing ability in a high temperature oxidation environment, the preparation method is simple and the production cost is low.

The invention discloses a preweaning feed free of zinc oxide. The preweaning feed is prepared from the following raw materials in parts by weight: 8-10 parts of common maize, 15-20 parts of expended maize, 20-25 parts of broken rice, 1-3 parts of hulled soybean meal, 2-5 parts of dietary fiber, 5-10 parts of low-protein whey powder, 10-15 parts of expanded full-fat soybean, 5-10 parts of fish meal, 2-5 parts of potato protein powder, 3-5 parts of emulsified grease, 0.5-1 part of organic calcium, 1-3 parts of monocalcium phosphate, 3-5 parts of glucose, 1-3 parts of white sugar, 0.1-0.2 part of choline chloride, 1-3 parts of dried porcine soluble, 3-5 parts of plasma and 2-5 parts of core material. The invention provides the preweaning feed for controlling the diarrhea of piglets independent of zinc oxide. In the preweaning feed, easily digested raw materials with low stress and low antigen and multiple intestinal tract health-care technologies are preferably selected to prevent the diarrhea of the piglets, and the effect is obvious.

The invention provides a high-ignition-point transformer oil which is composed of base oil, an antioxidant, a pour-point depressant, anti-photosensitivity agent and a metal passivator, wherein the base oil is composed of narrow-fraction cycloalkyl oil and modified vegetable oil. The invention also provides a preparation method of the high-ignition-point transformer oil. The preparation method comprises the following steps: preparing the narrow-fraction cycloalkyl oil; preparing the modified vegetable oil; injecting the narrow-fraction cycloalkyl oil and modified vegetable oil into a reaction kettle, stirring uniformly, carrying out clay refining, filtering, adding the antioxidant additive, pour-point depressant, anti-photosensitivity agent and metal passivator, and carrying out vacuum treatment under the negative pressure of 0.8 KPa by a vacuum pump 1-3 times. The open flash point of the transformer oil can reach 270-320 DEG C, the ignition point reaches 300-350 DEG C, and the breakdown voltage reaches 80-100 KV/2.5mm. The product has much higher safety performance than the traditional transformer oil. The product quality satisfies the America standard ASTM D 5222-2008.

The invention relates to the technical field of solder paste, in particular to lead-free and halogen-free roll coating solder paste and a preparation method thereof. The lead-free and halogen-free roll coating solder paste comprises, by weight percentage, 82-92% of allow solder powder, 2.7-6.0% of organic solvents, 3.2-5.4% of film-forming agents, 0.5-1.8% of organic acid, 0.4-1.5% of thixotropic agents, 0.1-1.5% of surface active agents, 0.1-1.6% of preservatives, 0.5-2.0% of humectants and 0.5-2.0% of slow release agents. The lead-free and halogen-free roll coating solder paste has the advantages of being good in oxidation resistance, good in welding effect, capable of avoiding crusting during low-temperature storage, and capable of being kept wet for a long time without being dry.

The invention relates to a preparation method for a silicon carbide/carbon nano-tube heat-conducting composite material. The preparation method comprises the following steps: placing silicon carbide particles in a tubular furnace; charging argon and hydrogen; heating to 750-850 DEG C; charging a mixed solution of a carbon source and a catalyst, and growing carbon nano-tubes on the silicon carbide; impregnating a polycarbosilane solution and the silicon carbide growing the carbon nano-tubes in a state that a vacuum degree is less than or equal to 0.1MPa; drying to form blocks; and carrying out pre-pressing and hot-pressing forming on the obtained blocks to obtain the silicon carbide/carbon nano-tube heat-conducting composite material. The bending strength of the composite material can achieve more than 125MPa, and the compressive strength thereof can achieve more than 500MPa via a test. The composite material is high in oxidation resistance, and tolerant to high-temperature ablation at 800-1200 DEG C for a long time in air. The thermal conductivity of the composite material can achieve more than 30W/(m.K).

The invention relates to the technical field of PVC modified materials, in particular to a transparent light-shielding PVC (polyvinyl chloride) modified material for wires and cables and a preparation method of the PVC modified material. The transparent light-shielding PVC modified material for wires and cables is prepared from raw materials in parts by weight as follows: 80-120 parts of PVC resin, 50-75 parts of a plasticizer, 5-15 parts of light calcium carbonate, 30-45 parts of heavy calcium carbonate, 15-25 parts of an opacifying agent, 4-8 parts of a heat stabilizer, 1-3 parts of an impact modifier, 0.6-1.0 part of a light shielding agent, 0.4-0.8 parts of an antioxidant, 0.6-1.0 parts of an outer lubricant and 0.3-0.7 parts of an inner lubricant. The transparent light-shielding PVC modified material for wires and cables has a good light shielding effect and better oxidation resistance and is environment-friendly, good in temperature resistance and weather fastness, high in strength, excellent in impact resistance, good in flame retardance and processing performance and excellent in comprehensive performance.

The invention discloses a protein-EGCG composite nanoparticle and an antioxidant Pickering high internal phase emulsion. The preparation method of the protein-EGCG composite nanoparticle comprises thefollowing steps: 1) adding water into soybean beta-conglycinin for dispersion, and performing hydration to obtain a protein solution; 2) adding water into EGCG for dispersion to obtain an EGCG solution; 3) adding the protein solution into a polar organic solvent to denature the protein, and adding the EGCG solution to obtain a mixed solution; and 4) dialyzing the mixed solution to remove the polar organic solvent and free EGCG to obtain the protein-EGCG composite nanoparticle. The stabilizing agent in the antioxidant Pickering high internal phase emulsion disclosed by the invention is the protein-EGCG composite nanoparticle. The protein-EGCG composite nanoparticle disclosed by the invention has good biocompatibility, and a Pickering high internal phase emulsion prepared by using the protein-EGCG composite nanoparticle as a stabilizer has excellent oxidation resistance, thermal stability and storage stability.

The invention discloses an organic anti-oxidation method for bonding wires. According to the method, organic anti-oxidation process treatment is added to a later period of a copper boding wire drawingprocess to solve the problem of high proneness to oxidation of micro-scale copper boding wires. Compared with the prior art, the organic anti-oxidation method has the advantages that anti-oxidation performance of the micro-scale copper boding wires can be improved greatly, so that oxidation points are not generated on the surfaces of the micro-scale copper boding wires, and high electric performance and packaging stability can be realized during microelectronic package and interconnection; the micro-scale copper boding wires obtained according to the method have excellent anti-oxidation performance, and production cost can be reduced to a great extent; the method has great promotion significance in anti-oxidation of the copper bonding wires and even in copper wire bonding and packaging markets.

The invention relates to the technical field of microelectronic packaging, in particular to a high-power press-fitted IGBT packaging module comprising a top cover, a submodule, gate pins, and a bottom base. The bottom base is covered with the top cover. The submodule is disposed between the top cover and the bottom base. The gate pins are disposed in sockets of an insulating bottom plate. The submodule comprises a top molybdenum plate, a chip, a bottom molybdenum plate, a conducting sliver plate and a PBI high-performance plastic frame. The top molybdenum plate, the chip, the bottom molybdenum plate and the conducting sliver plate are sequentially press-fitted from top to bottom in a recess of the PBI high-performance plastic frame. The upper surface of the top molybdenum plate contacts with the lower surface of the top cover through electrodes. The lower surface of the conducting sliver plate in the submodule is press-fitted to the upper surface of a middle projection of the bottom base. The high-power press-fitted IGBT packaging module has the advantages that production and assembly is simpler, connection reliability is better, and radiating performance is better.

The invention discloses plant washing liquid with disinsectization, bacteria inhibition and decontamination effects and a preparation method thereof. The plant washing liquid comprises the following components in parts by weight: 20-90 parts of soapberries, 20-90 parts of Chinese honeylocust fruits, 5-40 parts of camellia seed, 3-40 parts of cinnamomum cassia, 3-40 parts of ginger, 1-25 parts of patchouli leaves, 1-25 parts of folium artemisiae argyi, 1-25 parts of citronella leaves, 2-30 parts of daphne odera and 2-30 parts of lavender. The plant washing liquid is prepared by the 8 steps of deseeding, washing, drying, crushing, mixing, preparing an unrefined extract, preparing a refined extract and preparing a plant washing liquid finished product. The whole set of process flow is completed by adopting a physical method, the steps are simple, the cost is low, the industrial production can be formed, and the obtained plant washing liquid finished product is rich in foam, fragrant in smell, obvious in disinsectization, bacteria inhibition and decontamination effects and free from environment pollution and residue.

The invention discloses a waterproof luminescent coating which comprises the following components in parts by weight: 18-22 parts of acrylic resin, 14-18 parts of methyl acid resin, 6-10 parts of luminous pigments, 0.6-1.2 parts of epoxy curing agents, 12-26 parts of styrene, 3-6 parts of ground calcium carbonate, 4-8 parts of nano-calcium, 3-5 parts of curing agents and 2-4 parts of thickening agents. By adopting the mode, the waterproof luminescent coating disclosed by the invention has the advantages of good water resistance, heat resistance, environmental erosion resistance and oxidation resistance, simple manufacturing process and stability in property, and can be widely applied to indoor and outdoor ornaments, indication labels and the emergency instruction of public places.

The invention discloses a processing technology of a plastic product with oxidation resistance. The technology includes the steps of: (1) raw material mixing; (2) crushing, i.e. adding all the ingredients of step (1) into a pulverizer for crushing; (3) heating and melting, i.e. heating the mixed raw materials evenly mixed in step (2) by a high temperature heating furnace to a molten state; (4) injection molding extrusion, i.e. extruding the molten state raw materials into a needed shape by an injection molding machine; (5) cooling molding, i.e. employing air cooling for cooling molding of theextruded product; (6) product welding, i.e. conducting welding combination on the extruded product according to the needed shape; (7) surface modification, i.e. conducting filing, grinding and polishing processes to remove rough edges and burrs from the product, and correcting the size; and (8) product packaging.

The invention discloses a preparation method of rosa roxburghii tratt fruit vinegar through mixed bacteria compound fermentation. The preparation method comprises the following steps: (1) preparing roxburgh rose juice: screening roxburgh roses, putting the roxburgh roses into a pulping machine for smashing, filtering and sterilizing to obtain the roxburgh rose juice; (2) dilution: adding water to dilute the roxburgh rose normal juice to obtain a roxburgh rose juice diluent; (3) adjusting sugar degree: adding white granulated sugar into the roxburgh rose juice diluent to obtain a sugar-containing roxburgh rose juice diluent; (4) alcoholic fermentation: activating yeast, inoculating the yeast into the sugar-containing roxburgh rose juice diluent, activating lactic acid bacteria, and inoculating and fermenting to obtain roxburgh rose fruit wine; and (5) acetic fermentation: activating acetic bacteria, inoculating the activated acetic bacteria into the rosa roxburghii tratt fruit wine, and fermenting to obtain the mixed bacteria composite fermented rosa roxburghii tratt fruit vinegar. The rosa roxburghii tratt fruit vinegar integrating the functions of nutrition, health care, dietary therapy and the like is prepared by jointly fermenting the rosa roxburghii tratt fruit juice with the saccharomycetes and various lactic acid bacteria, and the taste and quality of the rosa roxburghii tratt fruit vinegar are improved.