120results about How to "Improve antioxidant properties" patented technology

Two lubricating polyurea-ester compositions with high stability and extreme-pressure antiwear performance contain proportionally basic oil, urea-based thickening agent, Ca-based thickening agent and extreme-pressure agent for composition A, or the composition A plus inorganic Ca salt for composition B.

The invention relates to lubricating grease and a preparation method thereof, particularly relates to composite lubricating grease and a preparation method thereof, and belongs to the technical field of chemistry. According to the invention, base oil, thickener and additive are prepared into lithium-calcium base lubricating grease according to a proper ratio; the lithium-calcium base lubricating grease has the characteristics of favorable high temperature property, shear stability, extreme pressure wear resistance, water resistance and the like; and the invention is simple in preparation method, stable in product performance, low in product comprehensive cost and is suitable for large-scale industrial production.

The invention is a crosslinked ethylene-tetrafluoroethylene copolymer insulating material. The crosslinked ethylene-tetrafluoroethylene copolymer insulating material comprises the following components in parts by mass: 100 parts of an ethylene-tetrafluoroethylene copolymer, 0.3-8 parts of a prepolymer crosslinking agent, 0.1-1 part of N, N'-bis[beta-(3,5-di-t-butyl-4-hydroxyphenyl) propionyl] hydrazine, 0.5-3 parts of 1,3,5-tris(3,5-di-tert-butyl 4-hydroxybenzyl)isocyanuric acid, 1-5 parts of antimony trioxide, 1-3 parts of antimony pentoxide, 0.1-2 parts of N, N'-ethylene bisstearamide, 0.1-0.5 part of pentaerythritol stearate and 0.1-3 parts of mineral oil, wherein the weight average molecular weight of the prepolymer crosslinking agent is 600-5000 and the weight part ratio of 1,3,5-tris(3,5-di-tert-butyl 4-hydroxybenzyl)isocyanuric acid to N, N'-bis[beta-(3,5-di-t-butyl-4-hydroxyphenyl) propionyl] hydrazine is 3: (0.9-1.2). By the crosslinked ethylene-tetrafluoroethylene copolymer insulating material, the problems that the smoke amount is high, the crosslinking agent is easy to self-polymerize and the requirements on the processing temperature is very rigorous during the processing of the current XETFE insulating material are solved and the domestic blank is filled up.

The invention provides a nylon composite material special for an electric wire and cable jacket, which is prepared from the following components by mass percent: 86-100% of nylon 6, 0.1-2.0% of main antioxygen, 0.1-2.0% of auxiliary antioxygen, 0.1-2.0% of lubricant release agent, 0.1-2.0% of light stabilizer, 0.1-2.0% of lubricant, 0.1-2.0% of nucleating agent and 0.3-2.0% of tackifier, wherein the main antioxygen is a hindered phenol antioxygen, the auxiliary antioxygen is thiodi-propionic acid diester or phosphite ester, the lubricant release agent is calcium stearate, the light stabilizer is a hindered amine light stabilizer, the lubricant is ethylene double hard ester amide (EBS), silicone powder or a compositor of the ethylene double hard ester amide (EBS) and silicone powder, the nucleating agent is nano talcum powder, and the tackifier is nylon 6 containing reactive groups. The nylon composite material has the advantanges of simple formula and cheap, easily available components and low cost, and the electric wire and cable jacket prepared from the nylon composite material can prevent white ants and mousse, has abrasion resistance and corrosion resistance, is durable in use and is non-toxic and environment-friendly.

The invention relates to an emulsifying-type linear cutting operating fluid and uses thereof, and mainly solves the problem of short service life of the emulsifying-type electric-spark linear cutting operating fluid in the prior art. The emulsifying-type linear cutting operating fluid comprises the following components: by weight, a) 1-20 parts of a modified rosin blasting agent; b) 2-40 parts of a vegetable oilness agent; c) 0.2-5 parts of a pH adjustment agent; d) 0.1-10 parts of a coupling agent; e) 0.1-8 parts of an emulsifier; and f) 25-80 parts of base oil; the modified rosin blasting agent is selected from at least one from modified rosin prepared by esterification reaction or neutralization reaction of carboxyl in a molecular structure of rosin, or by addition reaction, hydrogenation reaction, disproportionation reaction or polymerization of double bonds of the molecular structure of the rosin, and the technical scheme solves the problem well, and can be used in the industrial production of the emulsifying-type electric-spark linear cutting operating fluid.

The invention belongs to the field of natural product formulae, and relates to a compound preparation with effects of diminishing inflammation, resisting allergy and relieving itching as well as a preparation method and an application of the compound preparation. The compound preparation with the effects of diminishing inflammation, resisting allergy and relieving itching comprises raw materials in percentage by weight as follows: 1%-10% of herba portulacae extract, 20%-30% of moso bamboo leaf extract, 1%-30% of dendrobium candidum extract, 1%-10% of radix sophorae flavescentis extract, 1%-10%of radix glycyrrhizae extract, 1%-10% of flos lonicerae extract, 1%-10% of oat extract and the balance of auxiliary materials. With the adoption of an appropriate raw material ratio, effects of the components are brought into full play, the effect is better than that of each single component, the compound preparation has the good effects of diminishing inflammation, resisting allergy and relieving itching, and resisting threshold of skin to outside irritants is increased, so that skin allergy is relieved.

The invention discloses a thermal-conductive flame-retardant weatherproof anti-static environment-friendly insulating material for cables. The insulating material comprises, by weight, 50-60 parts of chlorinated polyethylene rubber, 7-11 parts of coupling agent, 2-4 parts of antistatic agent, 5-8 parts of antimony trioxide, 3-8 parts of calcium stearate, 5-10 parts of toughening agent, 1-2 parts of antioxidant, 2-6 parts of ultraviolet light absorber, 6-8 parts of flame retardant and 8-14 parts of insulating nanometer thermal conductive filler. The insulating material has good anti-oxygen effect, high stability and outstanding thermal conductivity, has high tensile strength and elongation at break, and also has good flame-retardant properties, anti-static performance and insulation performance, thereby being suitable for serving as the outer wrapping insulation material for cables; the preparation method of the insulating material has the advantages of low material cost, easy availability in raw materials, simple process, high practical value and good application prospects.

The invention provides a novel multifunctional lignin arylamine macromolecular antioxidant and a preparation method and application thereof in a polymer. Arylamine is introduced into lignin phenol ortho-position through a mannich reaction, a phenol functional group of the lignin is converted into a hindered phenol structure with the better anti-oxidant effect, and the anti-oxidant capability is improved; meanwhile, due to introduction of arylamine, the anti-oxidant effect is further enhanced, and the synergic anti-oxidant effect is achieved; compared with a common polymer antioxidant, the prepared lignin arylamine macromolecular antioxidant has the advantages of being non-toxic, high in molecular weight, not likely to be migrated, low in additive amount, simple in technology, mild in condition, capable of achieving industrial production easily and the like.

The invention relates to a formula and a production technology of special lubricating oil for a dual-fuel engine. The lubricating oil is characterized by comprising base oil and an additive, wherein imported hydrogenated mineral base oil 500SN and 150SN are adopted as the base oil, the additive consists of a complexing agent S1880, a viscosity index improver OCP, a pour point depressant 1-248 and an anti-foaming agent T901, and the base oil and the additive are mixed according to a certain proportion. The lubricating oil is prepared by refining and blending hydrogenated base oil and special complex additives for imported dual fuels, and has better anti-oxidization capability and nitration resisting stability at higher temperature; the lubricating oil has protection and more excellent lubrication effects on parts difficult to lubricate, and can reduce the emission of harmful gas and generation of waste engine oil to purify the environment; the lubricating oil has excellent cleanliness and dispersion properties, and the generation of oil sludge and carbon deposit can be effectively inhibited, so that the engine can be cleaner, the oil is not easily aged, and the service life of the engine can be prolonged.

The invention discloses a rubber material for agriculture vehicle tires. The rubber material is prepared from the following raw materials in parts by weight: 40-50 parts of natural rubber, 10-14 parts of epoxy natural rubber, 15-20 parts of silicon dioxide, 2-4 parts of a silane coupling agent, 20-30 parts of brominated butyl rubber, 20-30 parts of superfine glass bead, 30-40 parts of carbon black N660, 20-30 parts of light calcium carbonate, 1-2 parts of tetramethyl thiuram disulfide, 1-2 parts of diisopropylbenzene peroxide, 2-3 parts of N-cyclohexyl-2-benzothiazole sulfonamide, 2-4 parts of zinc oxide, 1-2 parts of an accelerant DM, 0.5-1.0 part of an accelerant CZ, 1-2 parts of N-phenyl-N'-(1,3-dimethyl)-p-phenylenediamine, 1-2 parts of 2,2'-methylene-bi(4-methyl-6-tertiary butyl phenol), 1-2 parts of petroleum oil, 2-5 parts of stearic acid, 1-2 parts of protecting wax OK5194, 5-6 parts of rubber tackifying resin A-90, 5-8 parts of antimonous oxide, 5-10 parts of molybdenum trioxide and 20-30 parts of aluminium hydroxide.

The invention provides an environment-friendly type diesel smoke abatement and anti-freeze agent for purifying emission of diesel automobiles, which is prepared from cleaning and dispersing agent, anti-oxidant, alkyl nitrite or isopropyl nitrate or ethylene/vinyl acetate and high grade plane kerosene through high-shearing mixing and emulsion process. The invention can realize good intensified smoke abatement property and fluidity for diesel under low-temperature.

The invention belongs to the field of antioxygen, in particular to an emulsion antioxygen and a preparation method thereof. The emulsion antioxygen is emulsified and compounded by the following raw material reagents at the proportion: main antioxygen, auxiliary antioxygen, emulsifying agent, dispersing agent and defoaming agent. The emulsion antioxygen has better oxidation resistance than other similar antioxygens and can achieve the optimal oxidation resistance effect, and the total solid content of the emulsion antioxygen is more than 52%. The emulsion antioxygen has the advantages of good oxidation resistance effect, big activity, low volatility, high durability, no pollution and the like and is especially suitable for protecting tint and pollution-free color polymer thereof. The emulsion antioxygen can be favorably dispersed in ABS (Acrylonitrile Butadiene StyreneAcrylonitrile Butadiene Styre) rubber latex, is ideal antioxygen used preparing ABS by emulsion polymerization and has excellent dispersibility. According to the emulsion antioxygen, the heating oxygen aging time of the ABS resin can be prolonged in the ABS production, the oxidation inducing temperature of the ABS resin is improved, the phenomenon that the ABS resin becomes yellows in the production and processing process thereof can be prevented, the strength of a product can be improved, and the oxidation resistance problem for preparing ABS by emulsion polymerization can be solved.

The invention provides a dedicated emulsion-type composite anti-oxidant for MBS (methyl methacrylate-butadiene-styrene) and a preparation method of the dedicated emulsion-type composite anti-oxidant, and belongs to compositions taking high-molecular compounds as binders. The dedicated emulsion-type composite anti-oxidant comprises the following raw materials by mass: 5 to 20 parts of triethylene glycol bis[beta-(3-tert-butyl-4-hydroxy-5-methyphenyl)propionate (anti-oxidant 245), 5 to 30 parts of n-octadecyl-beta-(4-hydroxy-3,5-di-tert-butyl-phenyl)propionate (anti-oxidant 1076), 10 to 30 parts of dilauryl thiodipropionate or pentaerythritol tetrakis(3-dodecyl-thiopionate), 5 to 10 parts of stearic acid or oleinic acid, and 40 to 60 parts of deionized water. The dedicated emulsion-type composite anti-oxidant has the advantages that the oxidative degradation prevention efficiency is high; the compatibility to MBS latex is high; adverse effects on other performances of a PVC product are avoided; the heat-proof and solvent extraction-proof capabilities are high; adverse reaction between the dedicated emulsion-type composite anti-oxidant and other additives is avoided; toxicity, peculiar smell and solvent evaporation are avoided; convenience is brought for environmental protection; the performance is ideal; the preparation technology is convenient to operate; the preparation cost is lower.

The invention discloses a special protective adhesive for PS/CTP plates, which is prepared from the following components in parts by weight: 3-4 parts of Arabic gum, 2-3 parts of peach gum, 1-2 parts of pineapple pectin, 3-4 parts of hydroxyethyl fibers, 0.1-0.2 part of peppermint essential oil, 1-1.5 parts of polyvinyl alcohol, 1-2 parts of a compound additive, and 75-85 parts of deionized water; and in the process of preparation, components in a formula are added into hot water, and then fully stirred and filtered. The special protective adhesive for PS/CTP plates disclosed by the invention has a good uniform coating property, so that a smooth protective film can be formed after a small amount of the adhesive is used; the special protective adhesive for PS/CTP plates has an extremely strong protection ability, so that the service life of printing plates is prolonged; and the special protective adhesive for PS/CTP plates is aromatic in smell, so that the adhesive can improve the working environment, and improve the work efficiency.

The invention discloses skincare essence capable of moisturizing for 48 hours in a long-acting mode. The skincare essence is prepared from the following raw materials in parts by weight: 0.1-0.2 partof chia seed gel, 0.5-2 parts of chitosan, 3-5 parts of linseed oil, 6-8 parts of glycerin, 0.2-0.5 part of algal polysaccharides, 2-6 parts of plant fruit oil, 1-2 parts of plant essential oil, 0.2-0.5 part of panthenol, 0.05-0.2 part of preservative and 50-80 parts of deionized water. The skincare essence takes chia seed gel, algal polysaccharides, glycerin, aloe gel and chitosan as moisturizingcomponents, synchronously performs physical-layer moisturizing of chia seed gel, and water-absorbing moisturizing of algal polysaccharides and chitosan, is good in moisturizing effect, is long in moisturizing lasting time, and still can keep epidermis moisture content to be 50% or more after 48 hours.

The invention relates to the technical field of antioxidant preparation methods, and in particular relates to a preparation method of a high-performance antioxidant of butyronitrile rubber latex. The preparation method disclosed by the invention comprises the following steps: mixing an emulsion type primary antioxidant of 2,2'-methylene-bis-(4-methyl-6-tert-butylphenol), paracresol and dicyclopentadiene butylated products with a tri[2,4-di-tertiary butyl-phenyl] phosphite ester emulsion type auxiliary antioxidant according to a certain proportion, and uniformly dispersing by stirring mechanically, wherein the viscosity of the formed emulsion is 0.2-2 pa.s, and the average particle size is less than or equal to 2 mu m. Compared with the prior art, firstly, the antioxidant prepared by the preparation method disclosed by the invention has the advantages of being good in antioxidant effect, high in heat-resistant stability, environment-friendly, convenient for use and the like; simultaneously, by adopting tri[2,4-di-tertiary butyl-phenyl] phosphite ester, the butyronitrile rubber latex can be effectively prevented from becoming aged and yellow; the instability effect of the rubber latex does not exist.

The invention provides an environment-friendly type diesel catalysis detersive for cleaning emission of diesel automobiles, which is prepared from cleaning and dispersing agent, anti-oxidant, alkyl nitrite or isopropyl nitrate and high grade plane kerosene through high-shearing mixing and emulsion process. The agent can improve combustion efficiency according to the combustion conditions.

The invention relates to an HDPE pipe material and a preparing method thereof. A formula of the HDPE pipe material contains hindered phenol quaternary ammonium salt modified imvite, the mass of which is 1-10% of the total mass of all components of the HDPE pipe material. The invention further provides a preparing method of the HDPE pipe material. The HDPE pipe material has excellent processing stability and thermal resistance stability, durable weather resistance and well color.

The invention discloses a modified asphalt coating, a mineral granule surface modified asphalt waterproofing sheet material, preparation methods of the coating and the sheet material and a mineral granule heating spreading device. The modified asphalt coating comprises the following components, based on a total weight of the modified asphalt coating: 58-65 wt% of asphalt, 2-6 wt% of SBR, 8-14 wt%of SEBS, 3-6 wt% of tackifying resin, and 15-23 wt% of a filler, wherein the sum of weight fractions the components is 100%. According to the coating provided by the invention, a softening agent is not added, the coating does not contain the softening agent, so that the prepared mineral granule surface modified asphalt waterproofing sheet material has better stability, the performance degradationof the waterproof sheet material can be delayed, and adhesion of mineral granules can be improved; the SEBS is added, so that the prepared mineral granule surface modified asphalt waterproofing sheetmaterial has better UV-resistant stability, oxidation resistance and thermal stability, the performance degradation of the waterproof sheet material can be delayed, and the adhesion of the sheet material and the mineral granules can be improved.

The present invention relates to a lead-free solder for a soldering which is characterized in that the solder consists of materials with the following weight percentage: Cu from 0.1 percent to 1.0 percent, Ni from 0.1 percent to 0.2 percent, Ce from 0.01 percent to 0.10percent, Bi from 0.05percent to 2.0percent, Pr or/and Nd from 0.01percent to 0.10percent and the rest being Sn. The lead-free solder of the present invention, belonging to the environmental protecting products, has the advantages and effects of such as an anti-oxidation property, a mechanical property and corrosion resistance which can improve the performance of the solder, a uniform metallographic organization, refined grain, a good product quality, low cost and a proper reduction of the melting point.

The invention discloses a novel antioxidation silane coupling agent containing a hindered phenol structure. The novel antioxidation silane coupling agent is characterized in that the structural formula of the silane coupling agent is shown in the description, wherein R<1> is methyl, ethyl or propyl; R<2> is methyl, ethyl, propyl or cyclohexyl; n is in a range of 1-4. Through combination of inorganic filler modification with antioxidant addition, the novel antioxidation silane coupling agent containing the hindered phenol structure not only has the advantages such as good antioxidation effect,little pollution, low probability of color change and low toxicity or non-toxicity of a hindered-phenol antioxidant, but also has the unique structure and performance such as adhesion, compatibility,dispersity and the like of the silane coupling agent, and compatibility of the antioxidant with a polymer material is improved greatly.

The invention discloses a combined energy-conserving synergistic agent composition of lubricating oil nanometer material, which is prepared by the following raw materials according to mass percent: 30-85 percent of nanometer-hydrocarbon particles, 3.0-30 percent of nanometer-copper particles, 3.0-30 percent of auxiliary antioxidant, and 3.0-30 percent of emulsion inhibitor. The invention adopts the optimized combination of multiple nanometer particles and adds the auxiliary antioxidant and the emulsion inhibitor to the optimized combination, meanwhile makes full use of the cooperation action between the additives and improves the lubricating oil performance in lubrication, detergent dispersion, anti-oxidation and anti-emulsification performance. The combined energy-conserving synergistic agent composition of lubricating oil nanometer material is added to the lubricating oil of the M-TCE engine to start an engine bench comparative test; the result indicates that the external characteristic power of the engine is increased, the effective specific fuel consumption is decreased averagely by 2.6 percent, and the load characteristic effective specific fuel consumption is averagely decreased by 2.8 percent; under the high-idle-speed working condition, the CO content is decreased from 0.03 percent to 0.02 percent and the HC content is decreased from 12ppm to 9ppm; under the idle-speedworking condition, the CO content is decreased from 0.05 percent to 0.04 percent and the HC content is decreased from 25ppm to 18ppm.

The invention discloses drill bit housing steel and a preparation method thereof, and relates to the technical field of rock drilling tools. The steel is prepared from the chemical components: 0.22-0.34% of C, 0.10-0.35% of Si, 0.40-0.60% of Mn, less than or equal to 0.030% of P, less than or equal to 0.030% of S, 1.10-1.40% of Cr, 0.20-0.45% of Mo and 3.90-4.30% of Ni. Chromium in the steel enhances the hardenability of the steel and has a secondary hardening effect, a drill bit housing has good corrosion resistance and oxygen resistance, and the hardness and wear resistance of high carbon steel are improved without embrittling the steel. Meanwhile, through the adoption of chromium, the high-temperature mechanical properties of the steel are improved, and the performance impact of high temperature generated in the rock drilling process on the drill bit housing is reduced. In terms of chemical components, vanadium is replaced with chromium, so that more uniform strength, toughness andfatigue strength of the drill bit housing are obtained, and better strength and wear resistance of the drill bit housing are obtained. Meanwhile, through the proportion adjustment of other metal elements, the drill bit housing is more suitable for rock drilling in limestone areas.