SU810773A1 - Lubricating composition - Google Patents

Description

(54) LUBRICATING COMPOSITION

and synthesized by a known method.

Esters are added to the composition both to improve lubricity and to improve the solubility of the additive.

For the preparation of compositions, petroleum or synthetic oils of various chemical structure and physicochemical properties are used: industrial petroleum jelly 50 g, industrial 20, instrument oil MVG ,. VM-4 vacuum oil, ether 2 (ethers of pentaerythritol and fatty acids), polyethylsiloxane liquid 132-25. The oils are mixed with esters of lactic acid and 1-phenyl-3-methyl-5- (o-hydroxyphenyl} -1,2,4-triazole in the indicated proportions with lOO-llo C and vigorous stirring. After cooling, an oil is obtained, ready to use.

Lubricating properties examined on the machine face friction. Movable samples with a diameter of 5 mm were made of bronze Br. OFB-0,25, fixed - from steel 45. The volume of oil bath is 35-40 cm, sliding speed

0.8 m / s, loading stepwise, test duration 5 hours. Samples are treated to grade 8 and cleaned with diethyl ether, the maximum load is fixed (the load above which steady friction mode or selective transfer mode is not realized) and torque friction, according to which friction coefficient was calculated. Wear is determined by a gravimetric method based on the difference in weight of the samples before and after 5 hours of testing. Weight wear rate calculated by the formula

- / zfc

where q is the weight loss of the sample-for time

tests;

SP- normal contact area; L is the way of training.

The data obtained for the studied compositions is given in the table. Data on the composition of Scientific Research Institute of Chemical Physics-4 (composition 1 - vaseline oil + 0.05 wt.% 1- (2-pyridylazo-2-naphthol and composition 2-polyethylsiloxane liquid + 0.05 wt.% The same additive) are also shown here.

Butyl ester of lactic acid

Octyl estermilk

Industrial

 - 20 - 380 noe-50 20 0.1 450

410 0.009 1.92

6.32 10.12 510 0.009 1.90

12.48

12.04

5.32

2.14

2.34

2.64

2.58

12.74

2.12

1.31

2.68

0.84

0.82

13.62 3.42

Thus, it follows from the above examples that the lubricating properties of various inherent oils are improved by adding lactic acid esters together with 1-phenyl. Continuation of the table

Claims (4)

-Z-methyl-5- (o-hydroxyphenyl) -1,2,4-triaol in an oil-t-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 0.1-0.5%. Maximum, on the load of the studied compositions, increases by 1.3-1.8 times with the same, and in some cases, lower coefficient of friction compared to the composition of NIIFOH-4. There is also a significant decrease in weight wear rate :; 1.2-2 times for bronze samples and 2-3 times for steel samples (see table). At the same time, the improvement of the lubricating properties of the compositions, along with the complete dissolution of the additive, is achieved at a 20–30% concentration of phthalic acid esters; the addition of these esters at a concentration above 30% is irrational, since it slightly improves the lubricating properties (see table; increases the cost of the composition Claim 20 Lubricating composition based on petroleum or synthetic oil with the addition of an additive, about tl and chayasch with - that, in order to improve the lubricity of the composition i and 1-1 but 15 times T No. No. it contains in The quality of lactic acid esters of aliphatic alcohol Cl-Cd and phenyl-3-methyl-5- (o-hydroxyphenyl), 2,4-triazole with the following ratio of components, wt.%: 1-Phenyl-3-methyl-5- (o-hydroxyfenil) 1, 2,4-triazole 0.1-0.5 Ester of lactic acid and aliphatic alcohol 20-30 Petroleum or synthetic oil. Remaining Sources of information that are taken into account during the examination 1. Garkunov D. N. et al. Electoral transference in the nodes of friction. M., Ransport, 1961, pp. 31-35. 2. Authors certificate of the USSR 506877, cl. C 10 M 3/44, 1976. 3. Authors certificate of the USSR 618403, cl. C 10 M 1/32, 1976. 4. The author's certificate of the USSR 652204, cl. With 10 M 1/32, 1977 (pro-i ..u type).