WEB EXCLUSIVE: Advances in both formulation and compounding technologies have enabled Teknor Apex Co., Pawtucket, R.I., to develop a new family of TPE compounds for wire and cable that are RoHS and REACH compliant. Moreover, they are said to exhibit superior flame-retardant properties in comparison with conventional TPEs for wire and cable while meeting requirements for a wide range of end-use conditions, including : insulation, jacketing, and molded parts for flexible cords, coil cords, and cables in power tools, appliances, industrial robots, welding equipment, and entertainment audio/lighting systems.
Elexar LE-1934 Series styrenic block-copolymer compounds have UL-94 flammability ratings at 0.060 in. (1.52 mm), meet UL 1581 WV-1 and 1061 flammability tests without dripping, and have limiting oxygen index (LOI) in the 28-32 range, as opposed to 22-26 for conventional FR TPEs used in wire & cable. All of the compounds are UL 2556-registered for long-term aging at 105 C, are UL 1581-registered for sunlight resistance, and have brittle points of -55 C or lower. Shore A hardness ranges from 58 to 82. They are also said to exhibit good resistance to oil and UV, good retention of tensile properties upon aging, and excellent electrical properties for data, communications, and other low- to medium- voltage applications.