5results about How to "High flash point" patented technology

The invention belongs to the technical field of chemical synthesis, and particularly relates to a catalytic synthesis method of functional special polyether with narrow molecular weight distribution. The method comprises the following steps: by taking C1-C12 alcohol as an initiator, carrying out polymerization reaction with epoxide under the action of an organic catalyst, so as to prepare the functional special polyether with narrow molecular weight distribution. According to the invention, by designing an organic catalyst with a molecular structure containing phosphorus-boron (P-B) double active centers, not only is efficient catalytic ring-opening polymerization of alkylene oxide realized under a low-temperature condition, but also a special polyether product with high molecular weight and narrow molecular weight distribution is prepared. Meanwhile, by using the organic catalyst, the problems that a commercial DMC system is prone to inactivation, complex in mechanism and metal residues exist in ethylene oxide polymerization can be solved, and the application range of PAG in the fields of cosmetics, medicine and food-grade oil is widened.

The application discloses a kind of high flash point low-loss engine oil preparation process, and the product belongs to the field of lubricant production.The engine oil is formed by high flash point base oil, additive compound after removal of low flash point volatile component by heating vacuum, removal of light component again and filling, and the base oil flash point is greater than or equal to 220 DEG C, NOACK evaporation loss is less than or equal to 8%.The preparation process includes: screening high flash point low-volatile base oil, heating to 50-150 DEG C and removing light component under negative pressure vacuum.The light component is removed from the additive under negative pressure vacuum.The treated base oil is mixed with the additive in proportion, and then vacuum light removal and degassing are carried out at 50-150 DEG C, and the finished product is filled into the pipeline of the displacement filling machine after full replacement.The application significantly improves the flash point of engine oil and reduces volatile loss by the whole-process light removal process, which can greatly reduce the load of engine oil gas separator, improve separation efficiency, solve the problems of high engine oil consumption, poor high-temperature resistance, easy oxidation and deterioration, and high oil sludge and carbon deposition.

The present application belongs to the technical field of temperature control, and particularly relates to a temperature control liquid for coal-based Fischer-Tropsch synthesis hydrocarbon as well as a preparation method and application thereof. The temperature control liquid mainly comprises coal-based Fischer-Tropsch synthesis hydrocarbon, or the temperature control liquid mainly comprises coal-based Fischer-Tropsch synthesis hydrocarbon and liquid polyolefin. The distillation range of the coal-based Fischer-Tropsch synthesis hydrocarbon is less than or equal to 350 DEG C. The main component of the coal-based Fischer-Tropsch synthesis hydrocarbon is isomeric alkanes and normal alkanes with carbon number of 12-24, wherein the isomeric alkanes account for less than 90% of the total mass, and the normal alkanes account for more than 10% of the total mass. The kinematic viscosity of the coal-based Fischer-Tropsch synthesis hydrocarbon is less than or equal to 2.5 mm 2 / s at 100 DEG C, and 2.0-6.0 mm 2 / s at 40 DEG C. The kinematic viscosity of the liquid polyolefin is less than or equal to 8.0 mm 2 / s at 100 DEG C, and 2.0-20.0 mm 2 / s at 40 DEG C. The temperature control liquid has the characteristics of low density, low electrical conductivity, low kinematic viscosity and high heat conduction efficiency.

This invention discloses a high-antioxidant, anti-coking high-temperature chain lubricant and its preparation method, belonging to the field of chain lubricant preparation technology. It comprises the following components by mass percentage: 70%-85% base oil, 5%-10% antioxidant, 3%-8% anti-coking agent, 1%-3% extreme pressure anti-wear agent, 0.1%-0.5% pour point depressant, 0.01%-0.05% antifoaming agent, and the remainder being unavoidable impurities. The base oil is a mixture of synthetic hydrocarbon oil and polyether oil. This invention prepares the antioxidant complex by rationally selecting a complex of hindered phenolic and amine antioxidants and precisely controlling their ratio under specific temperature and stirring conditions. In accelerated oxidation tests, the increase in acid value after prolonged high-temperature oxidation is minimal, effectively delaying the oxidative deterioration process of the lubricant, significantly extending its service life under high-temperature environments, reducing equipment downtime due to lubricant oxidation failure, and improving production efficiency.

The invention belongs to the technical field of high-temperature motor lubricating oil, and discloses a high-temperature motor oil composition and a preparation method thereof. Comprising base oil and additives. The base oil is prepared by mixing synthetic ester, ethyl silicone oil and fluorine-chlorine-carbon oil according to a specific mass ratio of (1-2): (1.5-2.5): (1-2). The high-temperature motor oil composition prepared by the method has the characteristics of high flash point, high insulating property, excellent oxidation resistance, good low-temperature starting performance, relatively low cost and the like, and can meet the oil requirement of a high-temperature motor of a high-temperature electric submersible pump.