Unlock instant, AI-driven research and patent intelligence for your innovation.

Liquid lubricant, preparation method and application thereof, and method for rapidly realizing super lubrication

A lubricant and super-lubricating technology, applied in the field of lubricants, can solve problems such as danger to users, corrosion of friction pair materials, friction pair wear, etc.

Active Publication Date: 2022-02-25
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI +1
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Tomizawa and Fischer (ASLE Transactions, 1987, 30(1): 41-46.) first discovered that water can be used as a lubricating material in Si 3 N 4 / Si 3 N 4 The surface is super-lubricated, and the friction coefficient gradually decreases to 0.002 after several hours of running-in period, but this kind of ceramic water-based lubrication requires a long time of running-in process, which has caused serious wear on the ceramic surface before reaching super-lubrication
Tsinghua University Li Jinjin et al. (Langmuir,2011,27(15):9413-9417.) found that phosphoric acid solution can achieve superlubrication between different ceramic friction pairs, and they also established a mixed solution based on polyhydric alcohol and acid The new liquid superslip system (Langmuir,2013,29(1):271-275; Langmuir,2013,29(17):5239-5245; Langmuir,2018,34(12),3578-3587.), however, These acidic lubricants tend to corrode friction pair materials during use, pollute the environment, and may be very dangerous to users; in addition, they also use various two-dimensional nanomaterials as additives in liquid lubrication (ACS Appl MaterInterfaces, 2018, 10(47): 40863-40870; ACS Appl Mater Interfaces, 2019, 11(22): 20249-20256.), however, this method still requires a long run-in period, and the cost is relatively high
[0005] For the above-mentioned liquid lubricants, a long run-in period is still required to achieve a super-lubricated state, which will cause a certain degree of wear on the friction pair, and some acidic lubricants will also corrode the material of the friction pair, and there is a safety hazard during use. Hidden danger

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Liquid lubricant, preparation method and application thereof, and method for rapidly realizing super lubrication
  • Liquid lubricant, preparation method and application thereof, and method for rapidly realizing super lubrication
  • Liquid lubricant, preparation method and application thereof, and method for rapidly realizing super lubrication

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0026] The present invention also provides a method for preparing the liquid lubricant described in the above technical solution, comprising the following steps: mixing synthetic lubricating oil and natural organic acid to obtain the liquid lubricant. The preparation method provided by the invention is simple, easy to operate and beneficial to large-scale production.

[0027] In the present invention, when the synthetic lubricating oil is polyethylene glycol or polyalkylene glycol, the synthetic lubricating oil is first dissolved in water to obtain a water-based lubricating oil solution; then the water-based lubricating oil is Oil solution mixed with natural organic acids.

[0028] In the present invention, the mixing is preferably carried out under ultrasonic conditions; the power of the ultrasonic is preferably 100-200W, more preferably 150-200W; the time of the ultrasonic is preferably 10-20min, more preferably 15-20min .

[0029] In the present invention, the liquid lubr...

Embodiment 1

[0040] 1 g of citric acid was added to 10 g of polyalphaolefin (PAO40) lubricant, and then the mixed solution was ultrasonically treated for 10 min to fully dissolve and mix uniformly to obtain a liquid lubricant.

[0041] The friction performance of the liquid lubricant was tested using the reciprocating mode of a friction and wear tester (TRB, Anton Paar), and the upper friction pair was Si with a diameter of 6 mm. 3 N 4 , the lower friction pair is SiO 2 , before the test, both the upper friction pair and the lower friction pair were ultrasonically treated in absolute ethanol for 10 minutes, then rinsed with deionized water, and finally dried in an oven; the test load was 2N, the frequency was 2Hz, and the amplitude was 2mm. The liquid lubricant that embodiment adopts is in Si 3 N 4 and SiO 2 The coefficient of friction between the changes with time as figure 1 shown. from figure 1 It can be seen from the figure that the friction coefficient of the liquid lubricant i...

Embodiment 2

[0043] 0.5g phytic acid is added to the aqueous solution of 10g polyalkylene glycol lubricant (the content of polyalkylene glycol is 35wt%) in, then this mixed solution ultrasonic treatment 15min, it is fully dissolved, mixes homogeneously, Get liquid lubricant.

[0044] The friction performance of the liquid lubricant was tested using the reciprocating mode of a friction and wear tester (TRB, Anton Paar), and the upper friction pair was Si with a diameter of 6 mm. 3 N 4 , the lower friction pair is SiO 2 , before the test, both the upper friction pair and the lower friction pair were ultrasonically treated in absolute ethanol for 10 minutes, then rinsed with deionized water, and finally dried in an oven; the test load was 3N, the frequency was 4Hz, and the amplitude was 2mm. The liquid lubricant that embodiment adopts is in Si 3 N 4 and SiO 2 The coefficient of friction between the changes with time as figure 2 shown. from figure 2 It can be seen from the figure tha...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
friction coefficientaaaaaaaaaa
friction coefficientaaaaaaaaaa
Login to View More

Abstract

The invention provides a liquid lubricant, a preparation method and application thereof, and a method for rapidly realizing super lubrication, and relates to the technical field of lubricants. The liquid lubricant provided by the invention comprises synthetic lubricating oil and natural organic acid. The synthetic lubricating oil is used as a basic lubricant, and natural organic acid is added, so that a super-lubrication state (the friction coefficient is lower than 0.01) can be quickly achieved, and the abrasion of a friction pair caused by a relatively long run-in period is reduced. In the invention, the natural organic acid is a natural compound and does not corrode a friction pair material. The liquid lubricant provided by the invention is green and environment-friendly and does not pollute the environment.

Description

technical field [0001] The invention relates to the technical field of lubricants, in particular to a liquid lubricant, a preparation method and application thereof, and a method for quickly realizing superlubrication. Background technique [0002] Friction can be seen everywhere in our daily life and industrial production, some unnecessary friction will cause huge energy consumption and economic loss. Super-lubrication, first proposed by Japanese scholars Hirano and Shinjo, is a lubrication state in which friction disappears in theory, but in practice, due to the interference of the external environment and the limitation of testing technology, the lubrication state with a friction coefficient of less than 0.01 is usually called It is super lubricated. Superlubrication provides a feasible solution for saving energy and reducing economic losses, so it has attracted extensive attention from researchers in different fields. [0003] At present, according to the different lub...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/04F16N15/00C10N30/06C10N30/12
CPCC10M169/04F16N15/00C10M2207/124C10M2205/0206C10M2223/04C10M2209/1045C10M2207/289C10N2030/06C10N2030/12C10N2030/64
Inventor 王道爱杜长合于童童周峰
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI