SU1641840A1 - Conducting polymer compound - Google Patents

Abstract

This invention relates to electrically conductive polymer compositions that are intended for the manufacture of parts that are galvanized. The invention allows to increase the electrical conductivity (DV 0.76 Ω cm), adhesion to copper up to 2.1 kg / cm2, adhesion to nickel up to 1.5 kg / cm2, which is achieved using a composition comprising polypropylene, carbon black and maleic anhydride, and also graphite, bis-maleimide and a mixture of C, 7-C2 fatty alcohols (when the mass ratio of soot and grill is 1: 1, and of maleic anhydride, bis-maleimide and a mixture of fatty alcohols 1: 1: 2, in the following ratio of components , wt.%: carbon black 20–25; grait 20–25; maleic anhydride 0.3–1.0; bnc-calimide 0.3–1.0; mixture of C, 7-C2 fatty alcohols 0.6- 2.0; polypro ylene rest. Table 1. dz "and 4TTS3S

Description

The invention relates to electrically conductive compositions which are intended for the manufacture of parts metallized by electroplating.

The purpose of the invention is to increase the electrical conductivity and adhesion of the metal coating to the polymer.

The composition of ncnonbsvjoT includes the following components: polypropylene 21060-16, carbon black GP1-70 and PM-100, PME-YuOV, graphite GE-4 and ZUZ-M, maleic anhydride, bismaleimide, a mixture of fatty alcohols.

The composition, if necessary, may contain technological addition - calcium stearate, and the heat stabilizer - phenaean-23 in the amount of 0.5-1.0 mash.

The manufacturing technology of the composition is as follows:

In a dry-mix mixer, for a period of 10 minutes, at room temperature, a regulated amount of all the components, with the exception of polypropylene, is mixed. Polypropylene is loaded into the extruder metering hopper and fed to the extruder feed zone at a given speed. In the second loading zone, the prepared mixture is continuously metered into the melt of polypropylene at 210 ± 10 ° C. The residence time of the composition in extra heat

- 0.2 g / s. At the exit of the extruder, the composition is granulated.

Samples for determining the conductivity are prepared by direct pressing in the following mode:

Pressing temperature, ° С 190Ј1

Specific pressure

kgf / cm2 100

Sample holding time

in the press, min8

The specific volume resistivity of the PU, adhesion strength (kg / cm), is determined according to a known method.

To determine the physicomechanical

Specific Charpy impact viscosity kJ / m2, A.

The test results are presented in the table.

Claims (1)

Invention Formula The electrically conductive polymer composition, including polypropylene, carbon black and maleic anhydride, is used in order to increase the electrical conductivity and adhesion of the metal coating to the polymer, it also contains graphite, bis-maleimide, and a mixture of fatty alcohols C-C if with mass ratio