MATERIALS: New Cable Compounds With Higher Flame Retardance, Lower Shrinkage

Teknor's new additions to its line of halogen-free flame retardant cable compounds have better FR performance and low post-extrusion shrinkage.

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Three new grades of polyolefin-based compounds that reportedly offer both better flame retardance performance and lower post-extrusion shrinkage, are the latest additions to the Halguard series of low-cost, halogen-free flame retardants (HFFR) compounds for general-purpose jacketing applications from Teknor Apex, Pawtucket, R.I.

Halguard 58610 and 58615 are 53 Shore D compounds with UL-94 vertical burn ratings of V-0 for 1/16 in. thick specimens, and oxygen indices of 52% and 45%, respectively. Meanwhile, Halguard 58620 is a 54 Shore D compound that is said to provide the low level of post-extrusion shrinkage that is important for fiber optic cable applications. All three enable passing the UL-1685 FT-4 and UL-1666 riser flame tests for more complex cable constructions, and cost less than premium compounds yet with little compromise in performance properties (see table). They are recommended for cable used in subway, mass transit, cell tower, data center and infrastructure applications, as well as internal wiring in electrical and electronic equipment.

Want to find or compare materials data for different resins, grades, or suppliers? Check out Plastic Technology’s Plaspec Global materials database.