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A kind of oil-soluble nano-rare earth anti-wear lubricating oil additive and preparation method thereof

A lubricating oil additive and nano-rare earth technology, which is applied in the field of lubrication, can solve problems such as increased friction coefficient and wear, and achieve excellent anti-wear performance and simple and easy preparation process

Active Publication Date: 2021-04-27
TIANJIN RES INST FOR ADVANCED EQUIP TSINGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after the viscosity of lubricating oil decreases, although the friction coefficient in the fluid lubrication stage will decrease, it will enter the mixed lubrication state in advance, and cause the friction coefficient to increase, causing more serious wear

Method used

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  • A kind of oil-soluble nano-rare earth anti-wear lubricating oil additive and preparation method thereof
  • A kind of oil-soluble nano-rare earth anti-wear lubricating oil additive and preparation method thereof
  • A kind of oil-soluble nano-rare earth anti-wear lubricating oil additive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] Mix 25.6g of palmitic acid, about 6.0g of sodium palmitate and 30ml of alcohol solution evenly, add 1.9g of sodium fluoride dissolved in 5ml of deionized water into the above mixture, heat and reflux to 100°C under stirring, drop by drop with a funnel Add 2.45g of lanthanum chloride dissolved in 15ml of alcoholic aqueous solution (volume ratio, alcohol:water=2:1), and react for 4h after complete addition. The reaction product is centrifuged, washed and dried to obtain the oil-soluble nano rare earth anti-wear lubricating oil additive.

Embodiment 2

[0062] Mix 28.4g of stearic acid, about 7.1g of sodium stearate and 40ml of alcohol solution evenly, add 1.9g of sodium fluoride dissolved in 5ml of deionized water into the above mixture, heat and reflux to 100°C under stirring, and use a funnel to gradually Add 2.45g of lanthanum chloride dissolved in 15ml of alcoholic aqueous solution (volume ratio, alcohol:water=2:1) ​​dropwise, and react for 4h after complete addition. The reaction product is centrifuged, washed and dried to obtain the oil-soluble nano rare earth anti-wear lubricating oil additive.

Embodiment 3

[0064] Mix 28g of linoleic acid, about 7.0g of sodium linoleate and 40ml of alcohol solution evenly, add 1.9g of sodium fluoride dissolved in 5ml of deionized water into the above mixture, heat and reflux to 100°C while stirring, and use a funnel to dropwise 2.45g of lanthanum chloride dissolved in 15ml of alcoholic aqueous solution (by volume, alcohol:water=2:1) ​​was added dropwise, and reacted for 4h after complete addition. The reaction product is centrifuged, washed and dried to obtain the oil-soluble nano rare earth anti-wear lubricating oil additive.

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PUM

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Abstract

The invention provides an oil-soluble nano-rare earth anti-wear lubricating oil additive and a preparation method thereof, wherein the oil-soluble nano-rare-earth anti-wear lubricating oil additive comprises oil-soluble fluorine-containing nano-rare earth particles containing an organic modifier on the surface; the organic modifier The molar ratio to the oil-soluble fluorine-containing nano-rare earth particles is (5-15):1, and the organic modifier is a long-chain fatty acid with a carbon number of 16-18 and its corresponding salt, or vegetable oil and its corresponding oil salt. The oil-soluble nano-rare earth anti-wear lubricating oil additive of the invention does not contain sulfur, phosphorus and nitrogen, but can have better anti-wear performance than the traditional anti-wear additive ZDDP.

Description

technical field [0001] The invention belongs to the technical field of lubrication, and in particular relates to an oil-soluble nano rare earth anti-wear lubricating oil additive and a preparation method thereof. Background technique [0002] Wear is one of the important factors leading to mechanical damage, anti-wear additives play an important role in solving this problem, and the sulfur and phosphorus additives commonly used at present will not only cause abnormal chemical loss, but also make the exhaust gas three The catalyst of the catalytic converter is poisoned, which reduces its conversion efficiency, and the sulfur element increases the emission of sulfur oxides in the tail gas, which will also cause harm to the atmospheric environment. [0003] In addition, low-viscosity engine lubricating oil can significantly reduce the power consumption of lubricating oil internal friction, improve the fuel economy of automobiles, and reduce exhaust emissions. This is a major tr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M125/18C10N30/06C10N30/04
CPCC10M125/18C10M2201/14C10N2030/04C10N2030/06C10N2030/64
Inventor 淮文娟戴媛静张晨辉雒建斌
Owner TIANJIN RES INST FOR ADVANCED EQUIP TSINGHUA UNIV