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ELECTRICAL & ELECTRONIC | MATERIALS


highly resistant to chemicals, and provide very strong bonding between plastic and metal. Once again, Xytron material is being used, Sidiki says. “It demonstrates excellent direct bonding to metal without the further need for adhesives or glues and outperforms other PPS materials in processability with very low flash during injection moulding.”


Polycarbonate too The battery compartment is also a focus of attention at polycarbonate producer Covestro. Just like DSM, Covestro notes that, in order to position a large number of battery cells precisely and in a small space, cell holders and frames as well as housing compo- nents must be very dimensionally stable and mechanically robust. Depending on the design principle of the battery pack, the material must also be flame-retardant (V-0 down to 0.75 mm). Not surprisingly, Covestro’s answer is not the same as DSM’s. It points to its many


years of experience in encapsulating lithium-ion batteries for laptops and other electronic devices, using polycarbonate blends. It says these meet the above requirements and are also extremely impact-resistant over a wide temperature range, down to below zero. On its stand at Fakuma, it will present various battery modules, cell holders, crash absorbers and other products. “When it comes to cell holders and the integration of battery cells into modules, flame protection is particularly important,” says Dr. Julian Marschewski, and e-mobility expert at Covestro. He says a Bayblend FR PC-ABS blend is ideal for cell holders and battery modules, being temper- ature-resistant and dimension- ally stable. It is already used in mobile GreenPack rechargeable batteries from the Berlin-based manufacturer of the same name. Another special material is the highly filled polycarbonates of the


Left: The Alta Pack battery of Californian electric bike specialist Alta Motors is


equipped with a jacket made of the extreme- ly impact- resistant PC-PBT blend Makroblend from Covestro


See you at


FAKUMA stand no.


A3/3110 Welcome!


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PHOTO: ALTA MOTORS


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