31results about How to "Prolonged oxidation induction time" patented technology

The invention discloses an antioxidant additive composite, belonging to the technical field of lubricating oil. The antioxidant additive composite consists of the following compounds in parts by weight: 0.1-1 part of bismuth compound and 0.05-3 parts of arylamine compound. After the antioxidant additive composite is added into lubricating oil, the initial oxidation temperature and oxidation induction time of the lubricating oil can be greatly increased, and the high-temperature antioxidant property of the lubricating oil can be greatly improved. The antioxidant additive composite can be widely applied to various lubricating oil products including basic lubricating oil or finished lubricating oil, such as internal combustion engine oil, gear oil and the like.

The invention provides a flame-retardant high-heat-dissipation modified polypropylene electric tubular product and a preparation method thereof and belongs to the field of electric equipment. The flame-retardant high-heat-dissipation modified polypropylene electric tubular product is mainly prepared from, by weight, 750-1000 parts of polypropylene, 5-200 parts of diamond powder, 5-100 parts of graphene, 5-80 parts of silver powder, 10-180 parts of aluminum nitride powder, 1-10 parts of oxidized polyethylene wax, 10-100 parts of an ethylene-propylene copolymer, 10-100 parts of an ethylene-vinyl acetate copolymer, 10-80 parts of ethylene-propylene-diene-terpolymer rubber, 50-150 parts of heat-resistant polyethylene, 5-30 parts of an antioxidant, 80-300 parts of a flame retardant, 10-100 parts of a rigid packing material, 5-30 parts of a coupling agent and 50-150 parts of chlorinated polypropylene. The electric tubular product can be prepared by using the materials through blending, granulation and extrusion molding and has excellent flame-retardant and heat-conducting performances.

The present invention relates to an antioxidant based on N-(4-anilinophenyl)-amide carboxylic acid ester, wherein the antioxidant is characterized in that R1 is selected from alkyl, and R2 is selected from alkyl. According to the present invention, the antioxidant is added in the lubricating oil so as to be used, and can be used within a temperature of 230 DEG C; the initial oxidation temperature of the lubricating oil can be effectively improved with the antioxidant, the oxidation induction time of the lubricating oil can be effectively prolonged during the use process of the antioxidant as the lubricating oil anti-oxidation additive, the antioxidant can be effectively dissolve in the lubricating base oil, the use temperature is high, the maximum temperature is 230 DEG C, and the tribological properties of the lubricating oil are basically not affected; with the application of the antioxidant as the lubricating oil anti-oxidation additive in the lubricating base oil, the lubricating oil oxidation deterioration can be effectively controlled; and with the method of the present invention, the risk of the lubricating oil oxidation deterioration can be effectively reduced, and the service life of the lubricating oil can be prolonged.

The invention provides a non-migrating POSS (polyhedral oligomeric silsesquioxane) grated anti-ageing agent and a preparation method thereof; active amino groups in an amine anti-ageing agent are allowed to react with active groups in single-active functional group POSS, the amine anti-ageing agent is chemically grafted to POSS molecules, and the POSS grafted anti-ageing agent is obtained. The novel anti-ageing agent of higher anti-oxidant property and higher anti-migrating property is provided for the ageing protection for rubber and other rubber elastomers, and anti-ageing efficiency is improved without affecting structural properties of rubber and other rubber elastomers.

The invention discloses an active peptide with anti-oil oxidation function, its preparation method and application, and belongs to the technical field of plant-derived bioactive peptides. The present invention selects the by-product of oil plant processing, that is, the oil plant after oil extraction, as a raw material, and through the steps of protein extraction, infrared pretreatment, proteolysis, freeze-drying, extraction of lipophilic part, vacuum concentration and drying, etc., a DPPH free radical scavenging compound is prepared. , metal ion chelation, inhibit lipid peroxidation, prolong the oxidation induction time of vegetable oil, enhance the stability of emulsion and other functional properties of anti-lipid oxidation peptide, can be used as a natural antioxidant in the storage and preservation of oil and other oil-containing foods, It solves the problem of product deterioration and harmful products caused by oil oxidation, and prolongs the shelf life of food; the method of the invention has great practical and social significance for curbing oil oxidation, ensuring food safety, and promoting technological progress.

The invention discloses a preparation method and product of seabuckthorn seed oil microcapsules and its application in seabuckthorn chewable tablets. material to obtain a wall material solution; after dissolving the wall material solution in a water bath at 50-60°C for 30 minutes, stirring at room temperature for 2-4 hours to fully dissolve, adding seabuckthorn seed oil, and shearing at a speed of 20000r / min for 5- 8 minutes to obtain seabuckthorn seed oil primary emulsion; homogenize the seabuckthorn seed oil primary emulsion twice under a pressure of 30-40 MPa to obtain seabuckthorn seed oil microcapsule emulsion, then spray dry to obtain the seabuckthorn seed oil Microcapsules. The invention provides a preparation method and product of seabuckthorn seed oil microcapsules with uniform particle size distribution, good solubility, high embedding rate, less loss of nutrients and good oxidation stability and its application in seabuckthorn chewable tablets.

The invention belongs to the technical field of lubricating compositions characterized by reaction product additives with unknown or incompletely determined structures, and specifically relates to a preparation method of lubricating oil anti-wear agents, which includes the following steps: A. Using n-butyl acrylate as raw material; Azobisisobutyronitrile is used as the initiator, s, s'-bis (α,α'-methyl-α"-acetic acid) trithiocarbonate is used as the chain transfer agent, and the polymerization reaction is carried out in the presence of a solvent, and then the pressure is reduced Distill the solvent to obtain polymer A; B. Use cationic resin as a catalyst and esterify polymer A with ethanolamine to obtain polymer A containing -NH. 2 Polymer B of the group; C. Polymer B and molybdenum trioxide are heated to 127-135°C in the presence of N,N-dimethylformamide and xylene, refluxed for 4-5 hours, and then cooled to 60 -80°C, add hydrazine hydrate and continue stirring for 2-3 hours until the reaction substrate turns blue-green or dark green. Distillate the xylene under reduced pressure and filter. The lubricating oil anti-wear agent prepared by the method of the present invention has good raw material compatibility stability.

The invention relates to a noise-reducing polyethylene composite material for a drainage pipeline of a building and a preparation method thereof, belonging to the technical field of inorganic powder modified high-molecular polymers. The material comprises the following raw materials in parts by weight: 30-50 parts of polyethylene, 0.01-0.02 part of a peroxide initiator, 0.5-1 part of vinyl unsaturated silane, 50-60 parts of barium sulfate, 1-3 parts of a dispersant, 3-5 parts of titanium dioxide, 0.2-0.5 part of an antioxidant and 1-3 parts of carbon black. The material provided by the invention effectively solves the problem that existing drainage pipeline of the building is noisy and poor in high temperature resistance and chemical corrosion resistance. Raw materials are input to a high speed mixer to be mixed firstly, and then pelleted through a twin-screw extruder to obtain the composite material. The composite material provided by the invention has the advantages of mute-resistant effect, chemical corrosion resistance, heat resistance and shock resistance of a common tubular product, simple processing process, low cost and suitability of preparing the drainage pipeline of the building.

The invention belongs to the technical field of lubricating oil and discloses a non-sulfur non-phosphorus anti-wear and antifrictional multifunctional additive and a preparation method thereof. The compositions of the additive comprise a friction modifier, an antiwear agent, an antioxidant, a detergent dispersant, and an antirusting agent. Firstly, the friction modifier is synthesized, then the friction modifier, the antiwear agent, the detergent dispersant, the antioxidant, and the antirusting agent with the needed amount are orderly mixed according to the proportion, and the mixture is heated to between 50 and 70 DEG C under the stirring and then is stirred evenly. The additive can be widely applied to various lubricating oil products including lubricant base oil or lubricant oil finished products, such as internal combustion engine oil, gear oil and so on, and is added into lubricating oil of an internal combustion engine with 3 to 20 weight percentage during the use. The additive can greatly improve the abrasion resistance and the antifriction performance of oil products, can also apparently improve the initial oxidation temperature and the oxidation induction time of the oil products, effectively suppress the viscosity of the oil products from increasing, and ensure that the high-temperature antioxidation performance of the internal combustion engine oil is greatly improved.

The invention discloses anti-oxygen of an N-(4-anilino phenyl)-acylamino sulfoether compound. The anti-oxygen is characterized in that according to the requirement of ester oil applied under the wide temperature range condition (120 DEG C-230 DEG C), a N-(4-anilino phenyl)-acylamino sulfoether compound serves as efficient / multi-effect lubricating oil anti-oxygen, and the oxidation resistance of lubricating oil is improved. The structure of the type of compound is the N-(4-anilino phenyl)-acylamino sulfoether compound shown in the graph 1, R1 and R2 are selected from alkyl, and R3 and R4 are selected from hydrogen or alkyl. The service performance of the lubricating oil can be improved through the compound.