阅读说明：本技术 一种新型润滑油的制备方法 (Preparation method of novel lubricating oil ) 是由 王南南 吕雪锋 刘光胜 于 2020-04-03 设计创作，主要内容包括：本发明公开了一种新型润滑油的制备方法,属于润滑油制备领域,所述制备方法包括如下步骤：将抗磨剂ZDDP和IF-WS2纳米粒子放入超声浴混合后加入到PAO基础油中,同时加入分散剂Span-80搅拌均匀,完成润滑油制备。本发明是通过添加抗磨剂ZDDP和IF-WS2纳米颗粒加入到PAO基础油中,制备一种新型的润滑油,同时加入的两种物质具有协同作用,不仅改善抗磨性能,同时降低润滑油摩擦系数,且负磨损。提供的加入双效作用的复合添加剂制备合成的这种新型润滑油具有多效-自修复、超润滑、超长使用寿命等特点。(The invention discloses a preparation method of novel lubricating oil, belonging to the field of lubricating oil preparation, and the preparation method comprises the following steps: and (3) putting nano particles of an antiwear agent ZDDP and an IF-WS2 into an ultrasonic bath, mixing, adding into PAO base oil, adding a dispersant Span-80, and uniformly stirring to complete the preparation of the lubricating oil. The novel lubricating oil is prepared by adding the antiwear agents ZDDP and IF-WS2 nanoparticles into PAO base oil, and the two added substances have a synergistic effect, so that the antiwear performance is improved, the friction coefficient of the lubricating oil is reduced, and negative wear is realized. The novel lubricating oil prepared and synthesized by the composite additive with double effects has the characteristics of multiple effects, self-repairing, super-lubricating, super-long service life and the like.)

1. A preparation method of novel lubricating oil is characterized by comprising the following steps:

and (3) putting nano particles of an antiwear agent ZDDP and an IF-WS2 into an ultrasonic bath, mixing, adding into PAO base oil, adding a dispersant Span-80, and uniformly stirring to complete the preparation of the lubricating oil.

2. The method for preparing a novel lubricating oil according to claim 1, characterized in that: the kinematic viscosity of the PAO base oil is 5.9mm²/s。

3. The method for preparing a novel lubricating oil according to claim 1, characterized in that: the temperature of the antiwear agent ZDDP and IF-WS2 nano particles in the ultrasonic bath is 100-180 ℃.

4. The method for preparing a novel lubricating oil according to claim 3, characterized in that: the weight fractions of the nanoparticles of the antiwear agent ZDDP and the IF-WS2 are both 0.5 wt%.

5. The method for preparing a novel lubricating oil according to claim 1, characterized in that: the preparation method of the lubricating oil also comprises a friction test, and the specific process of the friction test is as follows:

four sets of comparative experiments were set up, first set: using PAO base oil as lubricating oil without additives, second group: adding 0.5 wt% of WS2 nano particles into PAO base oil, simultaneously adding a dispersant Span-80, and uniformly stirring, wherein the third group comprises: adding 0.5 wt% of antiwear additive ZDDP into PAO base oil, simultaneously adding dispersant Span-80, and uniformly stirring, and performing fourth group: adding 0.5 wt% of secondary ZDDP antiwear additive and 0.5 wt% of WS2 nano particles into PAO base oil, simultaneously adding a dispersing agent Span-80, and uniformly stirring;

the four sets of experimental data were placed in an experimental test instrument, which was a contact pair made of AISI 52100 steel, and an 800HV instrument produced hardened as PCS was tested with a flatness Ra of 35nm and a ball diameter of 6 mm;

the experimental process is that under the environment with the temperature of 100 ℃, the RH is 35-45%, the average sliding speed is 3mm/s, the trend frequency is 0.5Hz, the initial maximum Hertz contact pressure is 1.12GPa, the experiment is repeated for 5-10 times, and the experimental data comparison result is obtained.

Technical Field

The invention relates to the field of lubricating oil preparation, in particular to a preparation method of novel lubricating oil.

Background

In the automotive industry, one third of the fuel energy is used to overcome friction in engines, so tribology research has focused primarily on the development of low friction materials and more efficient lubricating oils. In recent years, the advent of nanotechnology and its development have led to the synthesis of various novel nanomaterials, which have been widely used in the macroscopic field of lubricants, such as layered materials like graphite, for 1000 years in solid lubrication, and on the other hand, the research on carbon-based nanoparticles and nanotubes, and nano compounds like Cu, ZnO, TiO2, etc. have been intensively studied in recent decades. At the same time, metal disulfide nanomaterials such as MoS2 and WS2 are highly desirable due to their layered structure.

Since the 90 s' synthesis of inorganic fullerene-like nanoparticles and nanotubes of metal disulfide materials, they have been extensively studied as additives to liquid lubricants. In fact, the use of nanoparticles has proved to be able to reduce the coefficient of friction to 60% in the boundary lubrication state compared to the base oil, and they have also been found to have excellent anti-wear properties. Furthermore, these nanoparticles can reduce friction and wear even at room temperature compared to additives currently used in the lubricant industry.

While many studies have been made to date on the tribological properties of nanoparticles, few studies have been made on the properties of nanoparticles in fully formulated lubricants. The friction coefficient of the existing lubricating oil is higher, and the abrasion resistance is not good.

Disclosure of Invention

The invention aims to provide a preparation method of novel lubricating oil, which solves the technical problems that the friction coefficients of the existing lubricating oil are high and the wear resistance is not good. In the patent, ZDDP and IF-WS2 nano-particles are added as composite additives to prepare a synthesized novel lubricating oil, so that the friction coefficient of the lubricating oil is reduced, and the wear resistance is improved.

A preparation method of novel lubricating oil comprises the following steps:

and (3) putting nano particles of an antiwear agent ZDDP and an IF-WS2 into an ultrasonic bath, mixing, adding into PAO base oil, adding a dispersant Span-80, and uniformly stirring to complete the preparation of the lubricating oil.

Further, the kinematic viscosity of the PAO base oil is 5.9mm²/s。

Further, the temperature of the nanoparticles of the antiwear agents ZDDP and IF-WS2 in the ultrasonic bath is 100-180 ℃.

Further, the mass fractions of the nano particles of the antiwear agents ZDDP and IF-WS2 are both 0.5 wt%.

Further, the preparation method of the lubricating oil also comprises a friction test, and the specific process of the friction test is as follows:

four sets of comparative experiments were set up, first set: using PAO base oil as lubricating oil without additives, second group: adding 0.5 wt% of WS2 nano particles into PAO base oil, simultaneously adding a dispersant Span-80, and uniformly stirring, wherein the third group comprises: adding 0.5 wt% of antiwear additive ZDDP into PAO base oil, simultaneously adding dispersant Span-80, and uniformly stirring, and performing fourth group: adding 0.5 wt% of secondary ZDDP antiwear additive and 0.5 wt% of WS2 nano particles into PAO base oil, simultaneously adding a dispersing agent Span-80, and uniformly stirring;

the four sets of experimental data were placed in an experimental test instrument, which was a contact pair made of AISI 52100 steel, and an 800HV instrument produced hardened as PCS was tested with a flatness Ra of 35nm and a ball diameter of 6 mm;

the experimental process is that under the environment with the temperature of 100 ℃, the RH is 35-45%, the average sliding speed is 3mm/s, the trend frequency is 0.5Hz, the initial maximum Hertz contact pressure is 1.12GPa, the experiment is repeated for 5-10 times, and the experimental data comparison result is obtained.

By adopting the technical scheme, the invention has the following technical effects:

(1) the novel lubricating oil is prepared by adding the antiwear agents ZDDP and IF-WS2 nanoparticles into PAO base oil, and the two added substances have a synergistic effect, so that the antiwear performance is improved, the friction coefficient of the lubricating oil is reduced, and negative wear is realized.

(2) The novel lubricating oil prepared and synthesized by the composite additive with double effects has the characteristics of multiple effects, self-repairing, super-lubricating, super-long service life and the like.

Drawings

FIG. 1 is a TEM image of IF-WS 2.

FIG. 2 is a schematic diagram of the experimental apparatus.

FIG. 3 is a bar graph of the average coefficient of friction and its reproducibility for examples 1-4.

FIG. 4 is a graph of wear coefficient calculation data for examples 1-4.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings by way of examples of preferred embodiments. It should be noted, however, that the numerous details set forth in the description are merely for the purpose of providing the reader with a thorough understanding of one or more aspects of the present invention, which may be practiced without these specific details.