MATERIALS | HIGH TEMPERATURE PLASTICS
Above: Solvay has launched new Amodel Supreme and Bios grades to support further sustainable innovation in e-mobility
material resists cracks after being overmoulded onto metal conductors. It also shows “excellent” chemical resistance to the fluids used for thermal manage- ment and a high comparative tracking index (CTI) at elevated temperatures, says the company. Evonik, Solvay and BASF are three other groups with new materials designed to meet safety and operational requirements in bus bars. Evonik has added Vestamid LX9050 OR to its PA 12 materials for insulating electrical conductors. Bus bars insulated with the new grade can be used at elevated operating temperatures up to 125°C. Evonik says: “As required by the automotive industry, Evonik has developed the new PA 12 compound Vestamid LX9050 OR with halogen-free fire protection additives specifically for this purpose to achieve the highest possible fire resistance with flammability class V-0.” In addition to coating through co-extrusion, the compound is also suitable for injection moulding. Because of the halogen-free flame retardants used,
it can also be used to manufacture other compo- nents for automotive electrics or for the electrical industry. The new compound with a flammability classification of V-0 completes Evonik’s existing range of other RAL signal orange PA 12 products with V-2 and HB classifications. Solvay has launched two sub-groups in its Amodel range of polyphthalamide (PPA) materials targeted at higher demands of performance and sustainability in e-mobility applications. In the new Supreme range, Amodel PPA AE 9933 and AE 9950 have been designed for e-motor and inverter bus bars operating at 800 V and higher. The company says they combine “best-in-class” CTI with high thermal cycle shock resistance from -40°C to 150°C. They will also retain their CTI even after temporary exposure to peak temperatures above 150°C. Amodel Bios HFFR R1-133 and HFFR R1-145 are new flame retardant (UL94 V0 classification) compounds designed to serve the growing trend of integrating the e-motor, power electronics and the gearbox into one single consolidated electric drive system. Solvay says that with a CTI of more than 600 V, heat resistance higher than 120°C and “excellent” dimensional stability, these grades enable the design of highly compact systems using miniaturised components. Brian Baleno, Head of Marketing, Automotive at Solvay Specialty Polymers, says: “Amodel Supreme and Bios are garnering a high level of interest among designers of e-propulsion systems, includ- ing e-motors, power electronics, and electronic coolant pumps.” Away from polyamides, BASF has developed a new Elastollan thermoplastic polyurethane for bus bar holders. The group says that compared with
Avient’s varied colorants for healthcare
Avient unveiled high-temperature colorants for healthcare applications at MD&M West 2022 in Anaheim, USA. The company’s Transcend Premier Healthcare Colorants have been launched in polyphenylsulfone (PPSU), which can withstand up to 1,000 autoclave cycles and high heat sterilisation to 150°C. PPSU materials also maintain dimensional stability while providing chemical resistance against the effects of harsh cleaning agents. Avient says: “Clean, vibrant colours in both transparent and opaque options help set this line of high-temperature and high- performance colorants apart from other options. Additional iterations are in development for other high-performance resins, including polyethersulfone (PES) and polysulfone (PSU).” Transcend Premier Healthcare Colorants, which are available
globally, are tested to ISO 10993 standards, and can be custom- ised with functional additives to enhance product performance.
18 INJECTION WORLD | September 2022 IMAGE: AVIENT
Above: Transcend Premier Healthcare Colorants have been developed for heat sterilisation
www.injectionworld.com
IMAGE: SOLVAY
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