Conductive polypropylene composite material and preparation method thereof

Abstract

The invention discloses a conductive polypropylene composite material and a preparation method thereof. The conductive polypropylene composite material is prepared from, by mass, 69-85.5% of polypropylene, 12-24% of conductive carbon black, 2-5% of 1-allyl-3-methylimidazolium chloride and 0.5-2% of heat stabilizers. Conductive carbon black is subjected to surface treatment through 1-allyl-3-methylimidazolium chloride so that dispersity and existence form of the conductive carbon black in the polypropylene matrix can be improved; the composite material has good conductivity on the premise of adding a small amount of carbon black, its surface resistance is lower then 190 Ohm, and accordingly the composite material can be applied to field such as packaging and electronic devices having requirements on electrostatic protection and industrial fields having requirements on electromagnetic shielding.

Description

Technical field: [0001] The invention relates to a polypropylene composite material, in particular to a conductive polypropylene composite material and a preparation method thereof. Background technique: [0002] The method of adding conductive fillers to polymers to prepare composite conductive polymers with durable and stable conductive properties has been widely used in many industries such as electronics, energy, chemical industry, and aerospace in recent years due to its simple process and wide adjustable range of resistivity. . In polymer composite conductive materials, conductive carbon black is the most commonly used conductive filler, and when carbon black and polymer are blended to meet the requirements of electrical conductivity, the content of carbon black required is usually high, resulting in an increase in the melt viscosity of the composite system. The processing performance and mechanical properties become worse, and the cost is higher. [0003] As the mos...

AI Technical Summary

Problems solved by technology

In polymer composite conductive materials, conductive carbon black is the most commonly used conductive filler, and when carbon black and polymer are blended to meet the requirements of electrical conductivity, the content of carbon black required is usually high, resulting in an increase in the solution viscosity of the composite system. Poor processing performance and mechanical properties, and higher cost

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