TECHNOLOGY NEWS:
FreeFlex: plasticizer-free vinyl compound
The chemists at Teknor Apex have combined PVC and thermoplastic elastomers and come up with a new series of vinyl compounds that perform better than conventional vinyl at very low temperatures.
The new compounds are the first plasticizer-free vinyl compounds for wire and cable, according to Mike Patel, Industry Manager for the Vinyl Division of Teknor Apex. The new FreeFlex brand was to be officially launched at the IWCS/Focus event in Rhode Island, USA, in November.
“FreeFlex products withstand harsh winter conditions without embrittlement and surpass conventional vinyl in retaining their original mechanical properties after prolonged use,” said Mr Patel.
“While standard vinyl typically loses some of the plasticizer additive that is used to render it flexible, our new FreeFlex compounds derive their flexibility from elastomeric ingredients that are permanently alloyed with PVC.”
Five FreeFlex grades will be available with Shore C hardnesses ranging from 89 to 92 and brittle points from -26 to -56°C. Potential jacketing uses include cables for harsh
outdoor environments, military-specification coaxial cables, tray cables, and industrial cables. Highly flame-resistant, low-smoke formulations can also be provided for
custom applications such as indoor/outdoor data cables.
The technology underlying FreeFlex compounds involves the use of new-generation elastomers that typically are immiscible with PVC, and the development of proprietary chemistry enabling Teknor Apex to alloy them with PVC.
“In comparison with plasticizer additives, our elastomeric alloy components make possible greater retention of elongation upon heat ageing, greater resistance to embrittlement at very low temperatures, improved electrical properties as reflected by a lower dielectric constant, and enhanced chemical resistance,” said Maryellen Cox, Vinyl Division technical manager.
She continued: “We intend to develop other compounds that benefit wire and cable manufacturers because of our plasticizer-free technology.”
Company: |
Teknor Apex Company |
Country: |
USA |
Fax: |
+1 401-7258095 |
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