ADDITIVES | ELECTRICALLY CONDUCTIVE


type and orientation of the fillers do have a signifi- cant effect on conductivity,” he says. “In addition, we need to design the formula to balance conductivity with the required mechanical performance.” Specialty compounder Witcom Engineering


Above: LehVoss’s latest compounding line in its Hamburg Innovation Centre


extend capabilities for new conductive materials,” says Collet.


When designing a new conductive compound,


Collet says it is important to consider the process that will be used to make the final part (meaning injection moulding, extrusion, or 3D-printing). “Considering the processing technology is as important as the material recipe to achieve the requested part performance. In the part itself the


Plastics, a member of the Wittenburg Group, is also an active player in the conductive compounds sector. It works with many types of conductive addi- tives, including conductive carbon blacks, perma- nent anti-static additives (used, for example, for coloured parts), and carbon fibres for higher reinforcement applications, and uses polyolefin and engineering plastics matrix resins, according to Christine Van Bellingen, Business Development Manager, Conductive Compounds. Van Bellingen says the company is seeing interest in its newest PA6 and PC-based EMI shielding compounds, which it introduced last year, due to the push for replacement of die-cast metal parts or mixed metal/plastic solutions with lighter and more easily recycled plastic parts. She says these com- pounds are less expensive than those based on traditional metal fibres, such as stainless steel, and they do not have the environmental and health safety concerns that nickel-coated fibres yet they


High Performance Black Masterbatch and Conductive Compounds Americas Region 


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IMAGE: LEHVOSS


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