Conductive polypropylene composite material and preparation method thereof

Abstract

The invention discloses a conductive polypropylene composite material, which is prepared by the following materials by weight percentage: 60-89 percent of polypropylene, 5-15 percent of linear low density polyethylene, 5-20 percent of conductive black, 0.05-3 percent of coupling agents, 0.1-1 percent of antioxidants and 0-1 percent of other auxiliaries; the auxiliary which can effectively improve the electric conducting performance is added in a basic formula of the polypropylene composite material, so as to prepare the polypropylene composite material with better electric conducting performance. The invention has the advantages that: 1. proper conductive black is used in a composite material system, so as to lead the prepared polypropylene composite material to have better electric-conduction characteristic; 2. while the prepared polypropylene composite material ensures the electric conducting performance of the material, all physical mechanical property of the material can not be affected basically; 3. in the method for improving the electric conducting performance of the polypropylene composite material, the preparation process is simple and has no environment pollution.

Description

technical field [0001] The invention relates to a conductive polypropylene composite material and its preparation method. More specifically, the carbon black masterbatch is prepared first, and then added to the polypropylene material to improve the electrical conductivity of the polypropylene material, which can be used in electronics, petrochemical industry , medical and other fields, belonging to the field of polymer modification and processing technology. Background technique [0002] Polypropylene (PP) is a widely used general-purpose plastic because of its good processing properties, physical, mechanical, chemical properties and electrical insulation properties, as well as light weight and low price. However, good electrical insulation is prone to electrostatic hazards during use, which limits its application in electronics, petrochemical, medical and other fields. [0003] In order to reduce the volume resistivity of PP, adding a conductive agent to the PP substrate i...

AI Technical Summary

Problems solved by technology

[0004] However, due to the poor compatibility between carbon black and resin, the dispersion in the resin system is uneven, resulting in unstable electrical properties at each point of the material.

At the same time, due to the small size of carbon black particles, it is easy to cause dust in the production process and cause environmental pollution.