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MATERIALS | ENGINEERING PLASTICS


The Technyl Blue range has been extended with Above:


High-voltage connectors made with Technyl Orange from Domo


being used to manufacture large and complex- shaped thin walled components such as catering dishes and heat-resistant containers, as well as aircraft seat and lighting parts, air vents and overhead luggage compartments.


Portfolio expansion At the K show last year, Solvay Performance Polyamides introduced several new additions to its Technyl range of PA compounds. The European part of that business was sold in January of this year to Domo Chemicals to comply with EU regulatory clearance of BASF’s acquisition of Solvay’s global PA business, which was originally announced in 2017. Domo will add the Technyl grades to its product offering for the EEA and Swiss markets (the acquisition included a two-year geographical restriction.) Technyl Orange is a new range of fire-resistant


Right: The Skeleton all-plastics brake pedal produced by Carbody using Technyl Max PA


products for high-voltage automotive components in electric vehicles, including cables, connectors, charge plugs and sockets, converter housings, sensors and insulators. Many such parts are currently made using materials coloured using masterbatch at the injection machine but Gérald Durski, Strategy and Marketing Director at Domo Chemi- cals, says pre-compounding the colour into the polymer gives better colour stability and compatibility with flame retardant packages, as well as enabling features such as laser marking. The materials are available in RAL 2003 and include various halogen-free grades based on Technyl One and Technyl Star technologies. Some grades offer UL94 V-0 flammability ratings at wall thickness as low as 0.4mm; all are formulated for low mould deposit and offer a comparative tracking index (CTI) of at least 600V.


60 COMPOUNDING WORLD | May 2020


new grades specifically designed for hybrid and fully electric vehicles (EVs/HEVs). Based on PA66/ PA610 polymer technology, the new materials are intended for parts in cooling circuits and air-condi- tioning systems; the range now also includes extrusion grades. “Electrified vehicles present an increased number of complex interconnected cooling systems,” says Didier Chomier, Global Marketing Manager for Automotive. Technyl Blue D 218CR V50, for example, com- petes with polyphthalamides and polyphenylene sulphide and is said to provide total system cost advantages. “It offers high mechanical strength, design flexibility, excellent surface aspect and easy processing for applications including thermostat housings and water pumps,” says Durski. Also new is Technyl Max, an advanced PA


formulated for optimal modulus and fatigue behaviour that is currently being used by Carbody in a 60% glass reinforced grade for production of its Skeleton all-plastic brake pedal. The part features a rod-shaped composite structure which is over-moulded with the new PA compound. Previously, Domo says plastics brake pedals


have required a metal insert to pass rigorous mechanical tests but the new pedal can resist forces up to 3,000N (the average force applied in case of emergency braking is around 500N). Modulus is 20GPa, compared to around 15GPa for competing materials, and fatigue resistance is between four and ten times better. A 50% glass reinforced grade is available now with a 70% version under development. In addition to car pedal systems, Technyl Max is being targeted at semi-structural components such as transmission and motor mount cross beams, air shutter grills and seat structures. RadiciGroup’s latest high temperature addition


is Radilon NeXTreme. Erico Spini, Global Marketing Manager of RadiciGroup High Performance Polymers, says the material was initially developed for automotive applications “for which it is well suited as it features exceptional heat ageing resistance in air at 230°C.” Two grades are currently on offer for injection moulding: 35% glass fibre reinforced (RV350HHR 3800 BK) and 50% glass-fibre filled (RV500HHR 3800 BK). Typical applications for these materials include air induction system components requiring considerable heat resistance.


Welded assembly As miniaturisation of E&E components continues,


www.compoundingworld.com


PHOTO: DOMO CHEMICAL


PHOTO: DOMO CHEMICAL


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