SU707314A1 - Antifriction paste - Google Patents

Description

(54) ANTIFRICTION PASTE

The aim of the invention is to simplify the preparation of the paste, as well as reduce the cost of it.

To achieve this goal, an antifriction nasta based on eioxide resin, molybdenum disulfide, graphite, aluminum and polyethylene polyamine will contain these components in the following amounts, wt. %:

Molybdenum Disulfide I-8

Graphite 1-8

Aluminum 30-40

Polyethylenepolyamine5-7

Epoxy resinUp to 100

The resin solvent is taken as needed to obtain a paste of desired consistency, convenient for application.

Replacing organophobic aluminosilicate with a high aluminum content makes it possible to obtain an antifriction paste that has the best tech- nology of the product, as the selected components of the new paste have good compatibility and do not require any special treatment before mixing.

To study the antifriction paste (EDMA-21), 3 recipes are prepared, the compositions of which are given in Table. one.

The preparation of the proposed antifriction paste is carried out as follows.

friction performance

Coefficient of dry friction slip

Linear wear

: --.-.- /,

Note. Isans are conducted on an I-47 friction machine at a slip speed of 0.06 m / s and a specific pressure of 10 kg / cm. During testing of the COMPOSITION with the content of components that go beyond the lower and upper limits, there is observed an upper limit — deterioration of the technology of preparation, cracking of the hardened paste, deterioration of adhesion to the metal; beyond the lower limit.- an increase in relaxation self-oscillations, an increase in friction forces. In tab. Figure 3 shows the frictional properties of the EDMA-10 and EDMA-21 pastes for optimal compositions at R 10 kg / cm2 and a sliding speed of 0.6 m / s. - These tests give grounds to assert that the use of high aluminum content in EDMA type pastes as well as aluminosilicates, provides them with high wear resistance and low

Table 1

The epoxy resin is displaced with a solvent (acetone), which is used according to need, but taken in an amount not exceeding 30 vol. % epoxy.

In the resin solution, the filler powders — molybdenum disulfide, graphite, and aluminum — in an amount corresponding to the formulation of the composition are preliminarily placed under stirring.

J. Polyethylene npolyamine is injected into the main.

the composition before applying to the surfaces and thoroughly mixed with a mechanical stirrer for 5 minutes. until creamy consistency.

With the replacement of aluminum silicate with aluminum powder, the laborious operation of grinding aluminosilicate, sifting it through a sieve and processing the powder with polyethylene polyamine, is no longer necessary.

Data friction testing composition EDM.A-21 are given in table. 2

table 2

Table 3 degree rel | for xenational self-oscillations, which is especially important for the work of machine tool friction units. The use of the proposed antifriction paste improves the reliability and durability of the operation of friction pairs, improves performance and durability, and reduces power consumption.

spent on harmful resistances in friction units reduces the cost of machine tools that work with high precision machining.

Claims (1)

Invention Formula Antifriction paste based on epoxy resin, aluminum, molybdenum disulfide, graphite and polyethylenediamine, which, in order to simplify the preparation of the paste, contains these components in the following amounts, wt.%: Aluminum 30-40 Molybdenum Disulfide1-8 Graphite 1-8 Polyethylenepolyamine5-7 Epoxy resinUp to 100