SU662975A1 - Polymer electroconducting antifriction composition - Google Patents

Description

The invention relates to the field of electrically conductive antifriction self lubricating materials used to manufacture conductive antifriction slip components, such as inserts of trolleybus current collectors, trams, electric bridge cranes, etc.

A known composition for the manufacture of electrically conductive antifriction sliding parts {ij.

OcHOBHbiM lack of detail of the above compositions is insufficient self-lubricity and low heat resistance, which is caused by a Low content of graphite and a significant content of non-ferrous metals, reducing the arc resistance of parts. All sto reduces the wear resistance of parts made from these materials.

The known polymer composition for the manufacture of conductive parts of the slide C27. containing wt.%:

Graphite 60-79,5

Copper0,, 0

Binder rest

The following is used as a binder,,%:

Pheno formaldehyde

83.3

new resin

Urotropin

11D

Stearin 3.9

Lime

1.7

The disadvantage of this composition is the lack of wear resistance of parts otovlennyh based on this composition.

The aim of the invention is to provide a polymer composition, from which the conductive parts have high strength and wear resistance.

Claims (2)

This goal is achieved by the fact that a polymeric electrically conductive antifriction composition based on graphite and a polymeric binder contains as a polymeric binder tank: ,, .W: 5: ;; v- - -3, ..;,.,., ./ 66 Lithuanian lacquer with the following ratio of components, wt.%: Graphite Bakelite varnish 32-38. flpHKrejieMbifl as graphite is a powder from G | K1 (|| 1111 {56 ann; x eaEctTebd, 15 hp) according to GOST 4426-71 with ash not 0.6% and particle size not exceeding 1 Mm, consisting of the following fractions, wt.%: - 1 + O, 8 mm10.15 gO, 8 + 0.4535-45; 45 + O, 25i25-35 L-O, 25-S, 1O15-2O-O, It) Remaining Details received from this polymer to: Shg1ozia by presSoeyaniye fiteSheruratura from +155 to 165 C and at a specific pressure ZOO-5OOKGS / SM have compressive strength of 775-885 kgf / cm, specific gravity 1.79-1.83 g / cm the specificity of the elec- tricity 1O, O -; 14.7 ohms; . Vktavvk current guides of trolleybuses to ocHOBis: this composition ensures the operation of roplebuses up to a run of 4 7 km, the average wear is 18.6 microns per km running. 754 The current-use inserts of tr & playibus current collectors have 3-4 times less strength. compression, which causes their frequent breakdowns; their average wear and tear, when used in the same conditions, is 29 microns per 1 km of conditions; progr; formula invented Polymer conductive antifriction coking1 and 1 (based on graphite and polymeric binder, and h so that, in order to increase the strength and durability of conductive parts based on it as NoiiHMeipHotb binder, it contains bakelite varnish in the following ratio of components, wt.%: Graphite62-68 Bakelite varnish 32-38 Sources of information taken into account when examination 1. Authors' witness (CCW USSR № 434036, class. In 6O / 5/08, 1973. 2. USSR author's certificate №467846, cl. At 60/5/00, 1974.