A kind of EPP special conductive masterbatch and preparation method thereof

Abstract

The invention discloses a conductive master batch specially used for EPP. The conductive master batch specially used for the EPP is composed of PP with specific melt flow rate, conductive carbon black, a carbon black dispersing agent and processing aids; mixing, two-screw extruding and tabletting and dicing are carried out, so that the conductive master batch is obtained. The prepared conductive master batch is added with a foamable PP raw material, when the addition amount of the conductive master batch is 12%, the conductivity can reach 10<3> ohm.m, and no adverse effect is produced on foaming behaviour of polypropylene.

Description

technical field [0001] The invention belongs to the field of polymer materials and processing thereof, and in particular relates to a special conductive masterbatch for EPP and a preparation method thereof. Background technique [0002] Expanded polypropylene (EPP) is attracting great attention due to its excellent mechanical properties, heat insulation, flame retardancy and light weight. Among the EPP series products, conductive EPP has attracted much attention due to its special application. Generally, conductive polymers can be prepared by adding conductive materials to the polymer. However, due to the following reasons in the conductive EPP, the conventional method fails. One problem is that EPP is obtained by foaming PP with special properties through physical and chemical methods. If conductive PP is directly used for foaming, not only the foaming performance will deteriorate, but also the conductive performance will not be guaranteed. Another problem is that due t...

AI Technical Summary

Problems solved by technology

However, although there are many varieties of conductive masterbatches, there are no patent reports for conductive masterbatches suitable for EPP.