阅读说明：本技术 一种胺类纳米润滑油添加剂及应用 (Amine nano lubricating oil additive and application thereof ) 是由 李维民 陈云龙 王晓波 马瑞 于 2019-10-29 设计创作，主要内容包括：本发明提供一种胺类纳米润滑油添加剂及应用,涉及润滑材料技术领域,该添加剂是由表面含有环氧基团的纳米二氧化硅与对氨基二苯胺通过接枝反应获得,可应用于液压油基础中,显著提高油品的抗氧化功能,在润滑油中有良好的分散稳定性及抗磨损性能。(The invention provides an amine nano lubricating oil additive and application thereof, and relates to the technical field of lubricating materials.)

1. An amine nano lubricating oil additive is characterized in that the chemical structural formula of the additive is shown as a formula (1),

the chemical name of the formula (1) is Nano-AO.

2. The use of the amine-based nanolubricating oil additive of claim 1, wherein the additive is present in the lubricating oil in an amount of from 0.05 wt.% to 0.15 wt.%.

3. Use according to claim 2, characterized in that the additive is added in the lubricating oil in an amount of 0.10 wt.%.

Technical Field

The invention relates to the technical field of lubricating materials, in particular to an amine nano lubricating oil additive and application thereof.

Background

The application and research of nano lubricating additives have been developed with the advent of nano technology. As the nano particles have the characteristics of small size effect, surface effect and the like, the novel lubricating material prepared on the basis of the nano ions integrates the advantages of fluid lubrication and solid lubrication, and plays a role in reducing friction and resisting wear by applying a mode different from the traditional additive. The nano particles as the solid additive can be used not only in dry friction occasions without oil lubrication, but also in the oil lubrication, and form fluid + solid mixed lubrication. The most studied nano oil additives (CN108587729A, CN108517239A, CN104531272A) are some solid lubricants with a layered or scaly structure, such as graphite and MoS, with better anti-wear and anti-friction properties ₂And Polytetrafluoroethylene (PTFE).

The ultrafine grains of the nano particles cause the particles to have huge surface energy, and in addition, the attractive force existing among the particles and the tendency of automatic aggregation among the particles are very large, and a large blocky aggregate can be formed after a certain time, so the problem of poor dispersion stability exists in an oil product. Additional studies have shown that MoS is present ₂The lubricant (A) may chemically react with the contact surface, thereby generating frictional heat, causing oxidation, and having negative effects on the oxidation stability of the oil product; when the lubricant contains organic PTFE, the thermal conductivity and oxidation resistance of the lubricant are deteriorated.

Aiming at the defects that the nano additive has poor dispersibility in lubricating oil and reduces the oxidation resistance of oil products in the prior art, the invention aims to provide the amine nano lubricating oil additive with the oxidation resistance function, which can be uniformly dispersed in the lubricating oil and has the advantages of wear resistance and excellent oxidation resistance.

Disclosure of Invention

The invention provides an amine nano lubricating oil additive and application thereof, and solves the technical problems that the nano additive has poor dispersibility in lubricating oil and reduces the oxidation resistance of oil products in the prior art.

The invention is realized in such a way that the chemical structural formula of the additive is shown as a formula (1),

the chemical name of the formula (1) is Nano-AO.

The preparation method of the additive comprises the steps of mixing 4g of epoxy functionalized Nano-silica and 60g of p-aminodiphenylamine, adding 15mL of toluene as a solvent, heating to 140 ℃, carrying out reflux reaction for 6h, filtering at room temperature after the reaction is finished, collecting a crude product, washing with a washing solvent, and drying to obtain the Nano-AO.

As a preferred embodiment, the silica has a particle size of 7 to 25 nm.

As a preferred embodiment, it is characterized in that the washing solvent is absolute ethanol.

As a preferred embodiment, it is characterized in that absolute ethyl alcohol is used for washing 3 times.

The additive is added into lubricating oil in an amount of 0.05 wt.% to 0.15 wt.%.

As a preferred embodiment, the additive is added in an amount of 0.10 wt.% in the lubricating oil.

The invention has the beneficial effects that: the amine nano lubricating oil additive provided by the invention can be uniformly dispersed in lubricating oil, and has the advantages of wear resistance and excellent antioxidant effect.

Drawings

FIG. 1-1 is a comparison graph of the infrared spectra of Nano-AO and epoxy functionalized Nano-silica obtained in the example of the present invention;

FIGS. 1-2 are comparative graphs of the thermal weight loss of Nano-AO and epoxy functionalized nanosilica obtained in examples of the present invention;

FIG. 2 is a Scanning Electron Microscope (SEM) image of Nano-AO obtained by an embodiment of the present invention;

FIG. 3 is a graph of the Onset of Oxidation Temperature (OOT) of lubricating oils to which additives obtained in examples of the present invention have been added.

Detailed Description

The following examples are presented to enable one of ordinary skill in the art to more fully understand the present invention and are not intended to limit the scope of the embodiments described herein.