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A kind of dihydrocarbyl dithiophosphoric acid modified zinc oxide nanoparticles and its preparation method and application

A technology of dihydrocarbyl dithiophosphate zinc and dihydrocarbyl dithiophosphoric acid, which is applied in the field of dihydrocarbyl dithiophosphate modified zinc oxide nanoparticles and its preparation, which can solve the problems of large particle size, harsh conditions, and complicated steps. question

Active Publication Date: 2021-03-26
HENAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the preparation method of zinc oxide nanoparticles includes plasma discharge method on zinc salt solution (Chinese patent application number 201610274736.7), and the reaction of zinc salt with alkali and roasting (application number 201610069163.4; application number 201810003317.9; application number 201310284257. X; application number 201811472821.X), or with the participation of water-soluble modifiers, zinc salts react with alkali to produce water-soluble nano-zinc oxide (application number 201110330128.0). These methods have complicated steps and harsh conditions, and the particle size of the obtained products Larger and difficult to disperse stably in lubricating base oils

Method used

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  • A kind of dihydrocarbyl dithiophosphoric acid modified zinc oxide nanoparticles and its preparation method and application
  • A kind of dihydrocarbyl dithiophosphoric acid modified zinc oxide nanoparticles and its preparation method and application
  • A kind of dihydrocarbyl dithiophosphoric acid modified zinc oxide nanoparticles and its preparation method and application

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Experimental program
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Effect test

Embodiment 1

[0026] A method for preparing zinc oxide nanoparticles modified with dihydrocarbyl dithiophosphoric acid, specifically: stirring 0.5 mL of 1.6 mol / L methanol solution of sodium hydroxide into 15 mL of 0.053 mol / L zinc dihydrocarbyl dithiophosphate (R 1 and R 2 They are n-butyl and n-octyl, respectively, and the specific structure is shown in Table 1), reacted at 40 °C for 10 h, and obtained a light yellow powder by rotary evaporation, washing, and drying, which is dihydrocarbyl dithiophosphoric acid modified zinc oxide nanoparticles grain.

[0027] The transmission electron microscope pictures of the prepared dihydrocarbyl dithiophosphoric acid modified zinc oxide nanoparticles are shown in figure 1 . Depend on figure 1 It can be seen that the prepared dihydrocarbyl dithiophosphoric acid modified zinc oxide nanoparticles have a uniform particle size and an average particle size of 4 nm. The organic modifier dihydrocarbyl dithiophosphoric acid isolates the zinc oxide nanopa...

Embodiment 2

[0033] A preparation method for modifying zinc oxide nanoparticles with dihydrocarbyl dithiophosphoric acid, specifically: stirring 0.5 mL of 1.6mol / L potassium hydroxide in absolute ethanol solution and adding 15 mL of 0.053mol / L dihydrocarbyl dithiophosphoric acid Zinc phosphate (R 1 and R 2 The same is n-octyl, the specific structure is shown in Table 1), reacted at 30 °C for 12 h, and obtained a light yellow powder by rotary evaporation, washing and drying, which is dihydrocarbyl dithiophosphoric acid modified zinc oxide nanoparticles.

Embodiment 3

[0035] A method for preparing zinc oxide nanoparticles modified with dihydrocarbyl dithiophosphoric acid, specifically: 0.52 mL of tetraethylammonium hydroxide methanol solution (40 wt%) was stirred into 15 mL of 0.053mol / L dihydrocarbyl disulfide Zinc phosphate (R 1 and R 2 The same is n-octylbenzene, the specific structure is shown in Table 1), reacted at 30 °C for 14 h, and obtained a light yellow powder by rotary evaporation, washing and drying, which is zinc oxide nanoparticles modified with dihydrocarbyl dithiophosphoric acid.

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Abstract

The invention belongs to the technical field of lubricating oil additives, and discloses dialkyldithiophosphoric acid modified zinc oxide nanoparticles, a preparation method and application thereof. The method comprises the following steps: adding an alcohol solution of inorganic strong alkali or organic strong alkali into a polar organic solvent of zinc dialkyldithiophosphate, performing a reaction at 30-40 DEG C for 10-14 hours, removing the solvent after the reaction is finished, and washing and drying a reaction product to obtain the dialkyldithiophosphoric acid modified zinc oxide nanoparticles. The invention further discloses an application of dialkyldithiophosphoric acid modified zinc oxide nanoparticles as an antifriction and anti-wear additive in aluminum-based friction pair lubricating oil. The dialkyldithiophosphoric acid modified zinc oxide nanoparticles are small in particle size and uniform in distribution, and have excellent dispersion stability in lubricating oil. The product has outstanding antifriction and anti-wear effects on aluminum and aluminum alloy, and has a wide application prospect in the field of lubrication of automobiles, aviation and aerospace equipment.

Description

technical field [0001] The invention belongs to the technical field of lubricating oil additives, and in particular relates to a dihydrocarbyl dithiophosphoric acid-modified zinc oxide nanoparticle and a preparation method and application thereof. Background technique [0002] Under the environmental pressure of energy saving and emission reduction, aluminum and aluminum alloys are widely used in the automotive engine industry due to their advantages such as low density, corrosion resistance, high thermal conductivity and good processability. However, due to the special properties of aluminum and aluminum alloys, some traditional lubricating oil additives cannot be applied to aluminum-based friction pair materials. Since its inception, zinc dihydrocarbyl dithiophosphate (ZDDP) has been widely used in the field of lubricating oil due to its multiple functions such as excellent extreme pressure and anti-wear effects, anti-oxidation and anti-corrosion. However, the anti-wear m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M125/10C09C1/04C09C3/08C10N30/06
CPCC01P2002/01C01P2002/72C01P2002/82C09C1/043C09C3/08C10M125/10C10M2201/14C10N2030/06
Inventor 张晟卯张玉娟张治军张平余张园园
Owner HENAN UNIVERSITY
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