SU825597A1 - Lubricating composition - Google Patents

Description

one

The invention relates to lubricating oils and lubricants based on them and can be used in machine building and instrumentation to increase the wear resistance of steel-alloy copper friction units due to the repetition of selective transfer.

Known are glycerin and alcohol-glycerin mixtures l as well as the lubricant composition NYIFOX-2 2 based on polyorganosiloxane fluid with the addition of sapicial-I-chloroaniline, IIIIFOX-3 on a petroleum basis with the addition of salicytal-I-chloroaniline and NAIIPOX-4 4 on the basis of petroleum and synthetic oils with the addition of 1- (2-pyridylazo) -2-naphthol.

A disadvantage of lubricating compositions is their low load, anti-friction and anti-wear characteristics.

A lubricant composition based on petroleum and synthetic oils with the addition of adipic acid ester and 0.1-0.3 wt.% -2- & xy-3-methoxybenzapyaniline is also known.

However, the lubricating properties of this composition are not high enough.

The purpose of the invention is to improve the load and anti-wear properties of the composition,

The goal is achieved so that the base oil-based lubricating composition containing a dicarboxylic ester and an additive contains as an ester of a dicarboxylic acid ester of azelaic acid and contains 2-hydroxybenzalisobutylamine of the general formula

20

 U30-C4H9

in the following ratio of components

weight.%:

2-Oxybenzalisobutylamine 0, 1-0,4

Azelaic acid ester 20-30

Base oilErest

Esters of azelaic acid are known as lubricating fluids. They are added to the proposed composition both to improve lubricating properties and to improve solubility.

additives.

For the preparation of compositions, petroleum or synthetic oils with different chemical structures and physicochemical properties are used; Industrial - 20, Industrial - 50 instrument IBE, vacuum VM-4, polyethylene Siloxane fluid.

The oils are mixed with esters of azelaic acid and additive c. the above proportions when heated to 100-1 ° C and vigorous stirring. After cooling, the oil is prepared for use.

Lubricating properties investigated

on the machine butt friction. Movable samples with a diameter of 6 mm are made of bronze BR ОФ-6-0,25, stationary of steel St 45. The volume of oil bath is 35-40 cm, average speed is 0.8 m / s, loading is stepped. Test duration is 5 hours. Samples treated to grade 8 purity and degreased with diethyl ether and acetone. The maximum load is recorded (a load above which a stable friction mode or selective transfer mode and a friction coefficient are not realized). Wear is determined by a gravimetric method based on the difference in weight of the samples before and after testing.

The weighting intensity of wear is determined by the formula.

3 q / s. L, where q is the weight loss of the samples;

 contact area; L is the way of training.

The data obtained from the investigated compositions are given in the table. Here, for comparison, the test data for a lubricant composition based on base oils with the addition of 2-hydroxy-3-methoxybenzalaniline containing, in wt.%: 2 hydroxy-3-methoxybenzalaniline 0, D dioctyladipate 30, vaseline oil - the rest (composition l) or 2-hydroxy-3-methoxybenzalaniline 0.1, polyethylene siloxane liquid PE-C-2 - the rest (composition 2).

Known composition

Composition 1 Composition 2

Industry Dibutyl-50 Azelainate

Claims (5)

Continuation of table 1. The concentration of ether below 20% is not sufficient to dissolve the additive, and a concentration above 30% slightly improves lubricity and makes the composition more expensive. Additive in concentrations above 0.4 wt., 7 is insoluble in the base. A comparison of the results of the study of the proposed composition and the known one indicates a significant improvement in the load and antiwear properties. The lubricating properties depend on the concentration of 2-hydroxybenzalisobutylamine in the oil-ester mixture. Concentrations corresponding to the maximum effectiveness of the additive are practically independent of the nature of the oil and lie in the range of 0.1-0.4 wt.%. The maximum load of the proposed composition increases by 15-25% as compared with the known. The weighting rate of wear is reduced by 20-40% for the bronze sample and by 30-60% for the steel sample. Thus, from the table in the table it follows that the lubricating properties of different inherent oils can be improved by adding aselaic acid esters and 2-hydroxybenzalisobutylamine with a common presence. on the basis of. 7 Claims of the Invention contains 2-hydroxybenzalisobutylamine in the following ratio of components, wt.%: 2-hydroxybenzalisob. utilamine 0.1-0.4 Azelaic acid ester. 20-30 Base Oil Else Sources of information taken into account in the examination of L Garkunov, DN and others. Elected. body transfer in friction nodes. M., Transport, 1961, pp. 31-35. 2. USSR author's certificate number 606877, cl. C 10 M 1/32, 1976. 3. USSR author's certificate number 618403, cl. C 10 M 1/32, 1976. 4. USSR author's certificate number 652204, cl. With YuM 1/32, 1977. 5. USSR author's certificate for application number 2628599, cl. With YuM 1/32, - 1978 (prototype).