TECHNOLOGY | WIRE AND CABLE
Teknor Apex as a single cable compound source.” Recommended applications for Flexalloy 89504-90 compounds include factory automation and robotics cables; control and instrumentation cables (TC, PLTC, ITC and CIC); custom appliance wires; flexible cords (UL 62), including electric vehicle charging cables; portable power cables such as those used on construction sites; stage lighting cables; and welding cables. The Engineered Polymers business of the
Above: Hew-Kabel’s Hew-Silindo low friction jacket com- pound is
intended for medical diagnostic cables
overcome a temporary market shortage problem in North America for a particular halogen-free product for copper and fibre communication cables. The product was used in cable jackets and tight buffer applications but supply was tight. The company developed Meglon HF 8142 as an alternative that, is says, met all the attributes of the incumbent material but also processed more easily. While the original material shortage has been overcome, Mexichem says it has retained the business and Megolon HF 8142 is currently sold as a cable jacket and tight buffer compound for many cable designs worldwide.
PVC versatility Teknor Apex Company recently launched two PVC elastomer compounds for wire and cable insulation that exhibit enhanced performance and application versatility. The company says that the Flexalloy 89504-90 and 89504-90FR thermoplastic elastomer compounds provide better low tempera- ture flexibility than standard PVC and offer an improved capability to withstand repeated flexing over extended working lifetimes. Both grades have Shore A hardness ratings of 90, are UL recognised for Oil I and II insulation applications, and meet the requirements of the VW1 (UL 83) flame test (Table 1). The FR grade provides a greater level of flame resistance and has UL recognition for the 720 hour sunlight resistance test in all colours. “Teknor Apex received dual UL recognition for
Flexalloy 89504-90 products as both ‘PVC’ and ‘elastomer’ compounds, enabling them to be used for all cable types within UL 62 and many wet-rated applications under UL 83,” says David Braun, Wire and Cable Industry Manager for the Vinyl Division of Teknor Apex. “In cases where these insulation compounds are matched with our extensive line of Flexalloy jacket materials, manufacturers can use
52 COMPOUNDING WORLD | May 2019
Lubrizol Corporation has developed halogen-free solutions for cable applications and expanded its Estane flame retardant thermoplastic polyurethane (TPU) portfolio for emerging end applications in automation. Lubrizol’s TPU grades are widely used in cable and wire jacketing due to the demand for lower flame spread, low smoke densities and higher limiting oxygen index (LOI), in combination with good hydrolysis, good abrasion and weather resistance. Lubrizol says its wire and cable solutions deliver value by elevating high-temperature perfor- mance while providing good mechanical properties. Estane TPUs are recyclable, durable and
resistant to flex fatigue. The latest Estane polymers for cable protection include hardnesses ranging from UL-94 V-2 to V-0. Estane ZHF 90AT8 NAT01 is the latest addition to the product line and is especially designed for cables in robotics, con- struction and communications. The company says that it has developments underway for halogen- free, flame retardant polymer solutions for VDE and UL1581 requirements such as FT-1, FT-2, VW-1, cable flame and cable bundle. German company Hew-Kabel has introduced a
range of special cables for medical technology applications that it offers with its optional Hew- Silindo low friction jacket materials. Intended for use in diagnostics, surgery and patient monitoring, friction is said to be permanently minimised, even after five hundred autoclave cycles. The company says the Hew-Silindo jacket reliably prevents the “stick-slip” effect without comporomising perfor- mance or haptics. It can be sterilised and is biocompatible according to EN ISO 10993-5.
CLICK ON THE LINKS FOR MORE INFORMATION: �
www.busscorp.com �
www.lkabminerals.com �
www.sacoaei.co.uk �
www.polyone.com �
www.melos-gmbh.com �
www.mexichemspecialtycompounds.com �
www.teknorapex.com �
www.lubrizol.com/engineered-polymers �
www.hew-kabel.com
www.compoundingworld.com
PHOTO: HEW-KABEL
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