SU1214736A1 - Lubricating composition - Google Patents

Description

This invention relates to lubricants based on synthetic materials and can be used in various areas of industry to increase the wear resistance of friction units.

The purpose of the invention is to improve the lubricating properties of the composition in a pair of rubbing steel — a copper alloy.

The composition and performance indicators are given in table. 1.

The additive 3,5-di-ortho-hydroxyphenyl-1,2,4-triazole used in the composition has the following chemical formula:

HE

3,5-di-ortho-hydroxyphenyl-1,2,4-triazole is obtained by adding (0.01 g-mol) hydrazine hydrate to (0.005 g-mol perchlorate 2- (o-hydroxyphenyl) -4-oxo- 1, 3-benzoxazini. The reaction mixture is boiled for 30 minutes, cooled, diluted with water.

The resulting precipitate is filtered and recrystallized from aqueous dimethylformamide. After drying, colorless crystals are obtained. The product yield is 98%. M.p. ZOE-ZYU. Elemental analysis data:

Found,%: C 65.3; n 4.5; N 16.6. Calculated,%: C, 66.4; H 4.35; N 16.6. Lubricating compositions are made by blending synthetic oil.

AIR-2. (Ether of 1-erythritol alcohol and C5 fatty acids - Cd, TU 38101272-72) and additives. The additive is dissolved by heating to C. After cooling, clear oils are obtained, ready for use.

Lubricating properties of the composition op-. are determined on a face-type friction machine at a relative slip speed of 0.7 m / s. The sample of bronze (Bro. OF-10) is made in the form of a crown, and the counterbody is made in the form of a disk of steel X12F1Sh. The loading is carried out stepwise as the samples are burned in up to the maximum specific load, P ° of which maintains a stable friction mode () U const, const). The test duration was 5 hours; the volume of an oil bath was 10 ml. Sample wear is determined by a gravimetric method.

In tab. 2 presents comparative data on the testing of the proposed and known compositions.

As can be seen from the above data, the maximum specific load for a lubricant composition containing 3,5-di-ortho-hydroxyphenyl-1,2,4-triazole (max. 104.6 MPa) is almost twice the maximum specific load (Rud. Max 53, about MPa) lubricant composition containing 1-phenyl-3-methyl-5- (0-hydroxyphenyl) -1,2, 4-triazole. The coefficient of friction of the proposed composition is 2 times lower than that of the known one. A slight increase in wear is compensated for by a significant increase in the specific load (load bearing capacity of a pair of friction) and a decrease in friction losses.

Table 1

2

3,5-di-orthooxyphenyl-1,2,4-triazole

Also

0.05 0.10 0.15 0.20

42.9

0.014

3,471.10

-3

64.4

0,007

1,2.10

85.9 0.006 1.1.10

0,006 0,007

1.2.10 1.2.10

Ether-2 + 1-phenyl-Zmethyl-5- (o-hydroxyphenyl) -1,2,4-triazole additive

Ether-2- + 1-phenyl-3-methyl-5- (0-hydroxyphenyl) additive Table 2

29.0 0.026 18.38

53,81

Claims (3)

A LUBRICANT COMPOSITION based on a synthetic oil containing a triazole derivative, characterized in that, in order to improve the lubricating properties of the composition in a steel-copper alloy friction pair, it contains 3,5-di-ortho-oxyphenyl ~ 1 as a triazole derivative, 2, 4-triazole in the following ratio, May. %: 3,5-di-ortho-hydroxyphenyl-1,2,4-triazole 0.05-0.20 Synthetic oil Up to 100