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The second new product from Solvay Performance Products is Technyl Red S, a nylon 666 that is highly heat stabilized for continuous use at 200 C/392 F. It is aimed at turbo engine air ducts and charge-air coolers (pictured on p. 30), as well as cylinder- head covers. It is said to be an advance over the established Technyl HP grade. Technyl Red S has been tested at 200 C for 2000 hr and at 210 C/410 F for 1000 hr. It also boasts high resistance to impact and to acid condensates, as well as high flow, superior surface quality, and excellent weldability. MORE SPECIALTY ENGINEERING GRADES Meanwhile, Solvay Specialty Polymers (solvayspecialtypolymers. com) also has fielded several new materials for specialized applica- tions. Solvay added more automotive thermal-management mate- rials with new Ryton R-4- 300 PPS with 30% glass and Amodel A-89XX series of polyphthalamide (PPA) resins with 30-50% glass. The new Ryton grade is a linear PPS with improved tensile strength and elon- gation, as well as "best-in- class" weld-line strength. The new PPAs are for underhood components such as thermostat hous- ings, multi-coolant valves, and water inlets/outlets and crossovers. Two units of Solvay (U.S. office in Alpharetta, Ga.) have intro- duced several new engineering materials for demanding auto- motive applications requiring high heat resis- tance, chemical resistance, and superior strength with light weight. NYLONS FOR THERMAL MANAGEMENT Solvay Performance Polyamides (technyl.com) introduced two new Technyl nylon products for automotive thermal management. One is Technyl Blue D 218CR V33, a nylon 66/610 copolymer that features very high hydrolysis resistance plus high resistance to road salts. Main immediate applications are radiator end tanks, oil-filter hous- ings, and exhaust-gas recirculation (EGR) heat exchangers. This product has been grouped together with two existing series of Technyl nylon 66 products in the Technyl Blue family with three levels of performance. The new grade has "very high hydrolysis resistance"; below it are the Technyl Blue G2 grades ("high hydrolysis resistance") and Technyl Blue 34NG grades ("hydrolysis resistant") in a range of glass contents. All three reportedly offer thermal-aging resistance in presence of aggressive coolants (hot water/glycol mix). Technyl Blue 34NG reportedly shows 15% higher tensile-strength retention than standard nylon 66 after 1000 hr at 130 C/266 F. Technyl Blue G2 raises that to 30% greater strength reten- tion; and the new D 218CR V33 grades provide 60% greater tensile-strength retention than standard nylon 66. All three are said to offer high flow and excellent surface quality, relative to competing specialty polymers. By Matt Naitove Executive Editor A new grade of Ixef semi-aromatic nylon is colored "signal orange" for use in electric-vehicle rechargers. Despite 50% glass content, it reportedly offers high flow in thin sections and a glossy, resin-rich surface. New Engineering Materials for Challenging Automotive Applications Nylons, PPA, and PPS for high heat and chemical resistance and/or high strength with light weight. New nylons fight off attack from road salt and glycol coolants. QUESTIONS ABOUT MATERIALS? Visit the Materials Zone. 28 FEBRUARY 2018 Plastics Technology PTonline.com M AT E R I A L S Close -Up On Technolog y