40results about How to "Improve flash point" patented technology

The invention discloses an environmentally-friendly cold heading oil with epoxidized vegetable oil as base oil, and a preparation method thereof. The environmentally-friendly cold heading oil is prepared through adding a lubricant, an antirust agent, an extreme pressure agent, an antiseptic, an antioxidant and pour-point depressant to the epoxidized vegetable oil used as the base oil. The epoxidized vegetable oil is used as the base oil to substitute traditional non-renewable mineral oil, so consumption of non-renewable resources is avoided, and pollution to environment is greatly reduced. The environmentally-friendly cold heading oil is suitable for various machining, such as carbon steel cold heading, molding processing hot headed nuts, high-strength bolt sleeves and hollow and semi-hollow rivets, and molding processing of rivets; and the preparation method is simple and has low requirements about devices.

The invention discloses a high temperature resistant lubricating oil base oil and a preparation method thereof. The base oil is prepared by modifying castor oil in three steps of esterification, epoxy and ring opening. The lubricating oil base oil prepared by the invention has a high flash point, good oxidation stability, good wear resistance, has remarkable high temperature resistance, is suitable for use in a high temperature environment, and the base oil is green and environmentally friendly, and can be used in various fields. with broadly application foreground.

The invention discloses a method for preparing an environmentally-friendly chlorinated plasticizer from waste grease. The method comprises the following steps: the waste grease, used as a raw material, and methanol undergo esterification and ester exchange to obtain a high-condensation point fatty acid methyl ester mainly containing saturated fatty acid methyl ester; and the high-condensation point saturated fatty acid methyl ester is post-treated under the action of a catalyst in the presence of introduced chlorine to obtain chloro fatty acid methyl ester. The environmentally-friendly chlorofatty acid methyl ester plasticizer prepared by the method of the invention has a good plasticizing effect, and makes PVC products have the advantages of difficult oil effusion, low condensation point, low price and good quality. The method has the advantages of simple preparation process, and suitableness for industrial production.

The invention discloses an antirust oil for electrostatic spraying to solve the problem of corrosion on the surface of common carbon steel plates. The anti-rust oil consists of 70.0-90.0% by weight of base oil, 5.0-29.0% by weight of anti-rust agent, 0.1-5.0% by weight of atomization performance improver and 0.1-5.0% by weight of antioxidant. The antirust oil of the invention has the advantages of low production cost, high flash point, good washability, low surface tension and the like.

The invention discloses a CPVC resin preparation method by using a water phase suspension method, and belongs to the technical field of chemical raw materials. The preparation method is characterized in that the preparation steps comprise uniformly spraying a polyhydric alcohol aqueous solution on the surface of PVC resin by using a spraying device; then uniformly suspending the PVC resin which is sprayed with the polyhydric alcohol into a deionized water polymerizing kettle; adding an initiating agent and introducing chlorine gas for chlorination reaction; after the finish of introducing the chlorine gas, adding a chain terminating agent to stop the reaction; and performing washing and drying to obtain a product. The preparation method provided by the invention aims at the characteristics of CPVC resin production process by using the water phase suspension method, gives up the use of dispersing agents, first performs surface activating treatment on the PVC resin by using the polyhydric alcohol, and then performs the chlorination reaction. The prepared CPVC resin has high chlorine content and aging whiteness, has a good stability property, is easy to plasticize uniformly, and has good processability. As a chemical raw material, the CPVC resin can be widely used in preparing various products such as tubular materials, board materials, sectional materials, sheet materials, injection molded parts, foam materials and the like.

The invention provides a preparation method of high-speed engine base oil, which is prepared by preheating, hydroisomerization, hydrofining, high and low pressure separation, atmospheric distillation, vacuum fractionation, and finally using a composite adsorbent for secondary adsorption refining. Get the target base oil. The invention changes the molecular size, structure and arrangement of oil products, increases ideal components, inhibits coking and carbon deposition of catalysts, reduces the generation of non-ideal components such as polycyclic aromatic hydrocarbons and asphaltenes, improves the quality of oil products, and removes impurities, so that The chromaticity, flash point, and oxidation resistance of the oil have been significantly improved, and the application range and stability of the oil have been significantly improved. The base oil prepared by the invention has the characteristics of high flash point, high viscosity index, low pour point, strong oxidation resistance and high transmission efficiency, and can be better applied to high-speed engines.

The invention discloses a modified graphene-based heat-conducting oil and a preparation method thereof. The components of the heat-conducting oil include modified graphene, a heat-conducting oil base liquid, a metal passivator, and a heat-conducting oil additive. The specific preparation method is as follows: firstly , prepare hydroxyl-rich graphene oxide by an optimized oxidation reaction method, react hydroxyl-rich graphene oxide with alkyl phosphate or alkyl phosphite compounds to obtain modified graphene, and then combine modified graphene with other components to obtain modified graphene. A certain proportion is prepared by ultrasonic-assisted shear dispersion process. The heat-conducting oil based on modified graphene provided by the invention has good dispersion uniformity and stability, improves the heat-conducting efficiency of the heat-conducting oil and at the same time improves its oxidation resistance, prolongs the service life of the heat-conducting oil, and saves energy and reduces consumption.

The invention discloses base oil for refrigerator oil, a preparation method and application of the base oil for the refrigerator oil. The preparation method comprises the following steps: trimethylolpropane and fatty acid are mixed to react with each other under effect of a catalyst; the catalyst contains silicate phosphate. The catalyst used in the preparation method has high substrate selectivity, low side product content and high catalysis efficiency; upon the end of the reaction, the catalyst can be removed through filtration, the preparation method has the advantages of simple and convenient operation, energy-saving and environment-friendly. The prepared base oil for refrigerator oil has a high stability and good viscosity, pour point and flash point and the like.

The invention discloses a refrigerating machine oil base oil, a preparation method and application thereof. The preparation method comprises: mixing trimethylolpropane and fatty acid, and reacting under the action of a catalyst; the catalyst contains silicon phosphate. The catalyst used in the preparation method of the invention has high selectivity to the substrate, low by-products and high catalytic efficiency; it can be removed by filtration after the reaction is finished, and the operation is simple, energy-saving and environment-friendly. The prepared refrigerating machine oil base oil has good stability and excellent properties such as viscosity, pour point and lightning.

The invention relates to the field of energy, and in particular relates to a novel low carbon methanol diesel and an additive and a preparation method thereof. The technical scheme of the invention is as follows: the preparation method comprises the following steps of: preparing the additive; adding and mixing the following components: 7 parts of surfactants, 10 parts of oleic acid, 25 parts of fatty acid methyl ester, 15 parts of vegetable oil, 10 parts of multi-carbon alcohol (C4-C8 linear chain fatty alcohol), 8 parts of fatty alcohol-polyoxyethylene ether, 15 parts of cyclohexane acid glyceride and 10 parts of organic nitrate (c-RONO2 for short); mixing and stirring for homogenization; putting statically so as to obtain uniform emulsion; mixing; weighing 1000 parts of methanol-diesel mixture fuel, wherein the mass ratio of the methanol and the diesel is 15:85, putting in a container; adding a composite additive according to the condition that the mass ratio of the methanol to the diesel mixture fuel is 200:1; and stirring till the microemulsion is clear and uniform.