78results about How to "Excellent antioxidant stability" patented technology

The invention belongs to the technical field of lubricating oil. The antiwear energy-saving environment-friendly diesel engine oil comprises the following components in percentage by weight: 84.5-86% of base oil, 0.5% of antioxidation and anticorrosion agent, 14.0-15.5% of other additive and 0.05-0.2% of microfluorine solid lubricant powder. The preparation method comprises the following steps: adding base oil into a blending kettle, heating to 65 DEG C+ / -5 DEG C, sequentially adding the tackifier, pour-point depressant, antioxidation and anticorrosion agent and complexing agent while continuously stirring, stirring for 30-40 minutes, and standing to settle; and heating the oil to 65 DEG C+ / -5 DEG C, adding a certain amount of polyhexafluoroethylene superfine micropowder while continuously stirring, stirring for 4-5 hours, and standing to settle to obtain the finished product. Compared with the prior art, the wear-resistant lubricating oil with the polyhexafluoroethylene superfine micropowder has the advantages of reasonable component design, favorable antiwear and antifriction properties, favorable use effect and excellent high temperature resistance, and can prevent the machine from overheating in the high-speed operation process due to the favorable thermal conductivity.

The invention relates to a method for producing naphthenic base transformer oil base oil by using coal tar oil. The method is characterized in that high-additional value products such as naphtha oil, diesel oil and transformer oil base oil are obtained by adopting the steps of hydrotreating of the coal tar oil, the fractional distillation of hydrogenated products, solvent refining of transformer distillate oil and clay refining of the transformer distillate oil. The method has the advantages that the hydrogenation industrial chain of the coal tar oil is extended, the coal tar oil resource is reasonably utilized, the utilization value of the coal tar oil is increased, meanwhile, the density of the coal tar oil hydrogenated diesel oil can be reduced, the cycloparaffin distillate oil (300-360 DEG C) with high content can be obtained, the quality of the transformer oil base oil is ensured, and the obtained transformer oil base oil has high quality and high yield and is in line with the standards on the transformer oil No. 45 in national GB2536-1990 transformer oil.

The invention discloses a regeneration method of waste lubricating oil. The method is to settle the waste lubricating oil naturally to remove the water and mechanical impurities contained in it. When the content of mechanical impurities in the waste lubricating oil is less than 0.08% by weight or the pentane insoluble matter is less than 0.30% by weight, direct atmospheric and vacuum distillation , otherwise add a diluent accounting for 0 to 3.5 times the total weight of the waste lubricating oil, raise the temperature to 30°C to 95°C, and then carry out atmospheric and vacuum distillation after separation. Refined with lubricating oil to obtain regenerated lubricating oil. Using the method of the invention to regenerate the waste lubricating oil has no acid residue discharge, and by-products can be directly utilized, and the technological process meets the requirements of environmental protection.

The invention discloses an anti-wear lubricating oil for automobiles, which is composed of the following raw materials in percentage by weight: 2%-3% of alkyl salicylic acid; 0.2%-2.0% of zinc dialkyl dithiophosphate, and 0.6% of borate %‑5%; polyvinyl n-butyl ether 1.0%‑2.5%; benzotriazole 0.05%‑0.40%; alkylnaphthalene 0.1%‑1.0%; methyl silicone oil 1%‑3%; 1%-3% antimony dithiophosphate; 1%-3% butyl stearate; the balance of base oil. Compared with the prior art, the beneficial effects of the present invention are: excellent high-temperature detergency, anti-oxidation stability, anti-friction and anti-wear properties and base number retention, low average fuel consumption, reduced engine noise, reduced engine vibration, The operation is more stable, and the driving and handling performance has been significantly improved.

The invention provides a high-speed chain lubricating grease, comprising the following components by weight: 28.8-90.1% of base oil, 5-25% of thickening agent, 0.1-1.0% of antioxidant, 0.5-5% of anti-wear reagent at extreme pressure, 0.3-3% of an anti-rust agent, 0.02-0.2% of a metal passivating agent, 2-20% of a solid lubricant and 2-20% of a tackifier. The invention also provides a preparation method of the high-speed chain lubricating grease. The high-speed chain grease provided by the invention is suitable for high-speed motorcycle chain, automobile engine chain and industrial chain. The high-speed chain lubricating grease provided by the invention adopts compound of the anti-wear reagent at extreme pressure and the solid lubricant, has excellent rust resistance, high temperature resistance, antifriction performance, water resistance, antiwear performance at extreme pressure and long-term anti-wear effect maintenance, and can be used in chains of extremely harsh speed racing car (motorcycle and automobile engine); and the chain has elongation less than 2 mm, and service life reaching up to 10000 kilometers.