TPE compound allows easy processing
A
RTP Company product story
Edited by the Engineeringtalk editorial team
Jul 9, 2008
TPEs are processable by thermoplastic injection moulding methods, improving design and fabrication freedom.
The TPE division of RTP Company has released the ESD C 2800 B series of electrically conductive TPV-based thermoplastic elastomer compounds.
TPE materials combine the functional performance and properties of thermoset rubbers with the processability of injection mouldable thermoplastics.
These new grades offer a Shore A hardness as low as 55, making them a suitable replacement for conductive EPDM rubber.
According to Paul Killian, Technical Marketing Manager - TPE Division, "The addition of conductive fillers raises the modulus and viscosity of materials, thus negatively affecting both flexibility and processability".
"Historically, this has made it difficult to obtain flexibility and feel similar EPDM rubber".
"These new compounds achieve our goal of a highly conductive TPV material with good flexibility and elastomeric feel, high tear strength and easy mouldability".
ESD C 2800 B series grades feature a volume resistivity of 100ohm-cm and a consistent wide processing window across a Shore A hardness range of 55-85.
Compared to conductive EPDM rubber, conductive TPEs offer a major manufacturing advantage because they are processable by thermoplastic injection moulding methods.
The ability to injection mould TPEs allows for design and fabrication freedoms that thermoset rubber does not offer.
"Although targeted as a replacement for conductive EPDM rubber, these products also provide a significant reduction in viscosity versus previous conductive TPVs in the marketplace", said Killian.
"Injection moulders will find these products much easier to work with than conductive TPEs of the past".
"They're an ideal drop-in replacement for applications where ESD protection with TPE properties is needed".
RTP Company formulated the ESD C 2800 B series in response to growing market demand for softer TPV-based conductive TPEs.
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