37results about How to "Good viscosity-temperature characteristics" patented technology

The invention relates to spray supply mode cutting oil for metal material cutting processing, which is prepared from the following raw materials in parts by weight: 40-60 parts of base oil, 30-40 parts of vulcanized fat and 10-20 parts of phosphoric acid ester, wherein the base oil is vegetable oil or synthetic ester or a mixture of the vegetable oil and the synthetic ester; since the consumptionof the vulcanized fat and the phosphoric acid ester used as extreme pressure additives of the cutting oil is large, the cutting oil has good extreme pressure lubricating performance, thereby ensuringthat process requirements are satisfied by consuming a minute quantity of cutting oil when the cutting oil is used for the cutting processing and spray oil supply of difficultly processed materials; and the adopted raw materials are biodegradable and have no toxicity to human bodies, small damage to ecological environment and low pollution.

The invention relates to the field of lubricating oil, and discloses a method of using polymer to modify a lubricating oil. The method comprises a step of directly mixing a polymer solution obtained after polymerization reactions with a lubricating oil basic oil, wherein the polymer is at least one of ethylene propylene rubber, hydrogenated styrene-butadiene block polymer, and hydrogenated styrene-isoprene block polymer. According to a conventional method, a solid lubricating oil viscosity index modifier is used to modify a lubricating oil basic oil, the flowing performance of the modified lubricating oil at a super low temperature is not improved, the viscosity of the modified lubricating oil is not high enough at a high temperature, and the viscosity-temperature defect of the lubricatingoil is not overcome. The provided method overcomes the abovementioned problems. The obtained modified lubricating oil product has excellent viscosity-temperature characteristics.

A lubricant for extruding lead and lead alloy materials adopts NO.10 industrial white oil as base oil and combines various composite additives. The composite additives comprise an oiliness agent, an anti-wear agent, an anti-foaming agent, an antioxidant and an extreme pressure agent. The lubricant for the extruding lead and the lead alloy materials, provided by the invention, has the properties of low viscosity, high infiltrability and good viscosity-temperature characteristic, and can improve the pulling resistance and crack resistance of punching materials, increase the limit drawing ratio, lower the friction coefficient, improve the punch forming effect, increase surface smoothness, facilitate demoulding and cleaning and reduce extrusion force so as to reduce energy consumption.

The invention discloses an engine oil additive composition and a preparation method thereof. The formula of the engine oil additive composition is calculated in parts by weight: 20-40 parts of castor oil, 15-20 parts of boron nitrogen type modified castor oil, castor oil polyol 5-10 parts of ester, 5-10 parts of rust inhibitor, 5-10 parts of antioxidant, 5-8 parts of surfactant, 10-15 parts of organic molybdenum compound, 5-10 parts of dispersant, 2-5 parts of graphite powder 1 to 3 parts of metal deactivator, 2 to 5 parts of cleaning agent, 2 to 5 parts of nanometer metal powder concentrate, and 2 to 5 parts of viscosity index improver. The present invention prepares an environment-friendly engine oil additive composition by controlling the types and quantities of castor oil, modified castor oil, nanoparticles and other phosphorus-free additives. The additive has good lubricity, viscosity-temperature characteristics, low-temperature fluidity, and Corrosion resistance, anti-foaming and anti-emulsification capabilities, good comprehensive performance, and due to the addition of nano-materials and phosphorus-free additives, it increases anti-wear performance, prolongs the oil change period, reduces environmental pressure, and reduces adverse effects on the engine .

The invention relates to perfluoroether-based polysiloxane as well as a preparation method and application thereof. The perfluoroether-based polysiloxane has a structure characteristic as shown in a formula (I). The perfluoroether-based polysiloxane can have excellent performance of a low-temperature-resistance property, a viscosity-temperature property, stability, corrosion resistance and anti-wear capacity, further, is little in evaporation loss, and can be applicable to the fields, with severe environments, of aerospace, special industry and the like.

The invention discloses a hydrostatic mechanical power diversion transmission gear working fluid composition which uses a natural gas synthetic oil (GTL) / trimethylolpropane ester compound as base oil and is matched with multiple composite additives. The composite additives comprise antiwear additive, rust inhibitor, antioxidant, antifoam agent, demulsifying compound, metal passivator, reinforcing agent, oily agent, friction improver, dispersing agent and the like. The composition has proper viscosity, favorable viscosity-temperature characteristics, favorable low-temperature fluidity, favorable shear stability, favorable viscosity-slip characteristic, favorable lubricating property, favorable cooling property, favorable rust resistance, favorable adaptability to the sealing material, favorable antifoaming property, favorable filterability, favorable demulsibility, favorable clean property, favorable air release characteristic, high thermal oxidation stability, high hydrolytic stability, favorable extreme pressure abrasion resistance, sintering resistance and high transmission stability, and is beneficial to lowering the abrasion and impact load and reducing the vibration and noise.