AUTOMOTIVE | UNDER THE HOOD
applications such as clutch cylinders, shift forks and body in white.
Solvay says its new Amodel Supreme “features
the PPA industry’s highest glass transition tempera- ture (Tg) of 165°C which enables higher mechani- cal performance vs. traditional PA 4T and PA 6T based materials at elevated temperatures. There is also a greater Coefficient of Linear Thermal Expansion (CLTE) match to metals that allows for ease in designing overmolded components.” The new PPA range features improved electrical
Typical properties of three glass-reinforced polyamides from Teknor Apex Company
Source: Teknor Apex
grades with halide-free stabilisation that are designed for sensitive electronic applications, where ion migration can lead to failures of the electronic components. We continue to expand our portfolio of FR products in polyamides and other engineering plastics, such as PBT, PPA, and even PP, with several new grades in the final stages of commercialisation. Our vision is to have a polymer- neutral approach and provide an optimised solution to the individual customer problems.” RadiciGroup has developed Radilon Mixloy, a
new range of PA blends for applications including automotive. The matrix material is PA and the new range is made by blending other polymers readily available on the market through a compatibilisation technology developed by the group, which makes naturally immiscible raw materials miscible. Radilon Mixloy products feature high-performance proper- ties including thermal and mechanical resistance, and surface appearance. They also have low density, dimensional stability and ease of process- ing. Other advantages of these blends are low water absorption, improved tribological properties and low permeability (barrier effect). The company says that there are many fields of application, including engine compartment parts. In polyphthalamide (PPA) materials, Solvay has
introduced Amodel Supreme, a new line of high-performance compounds. Target applications are high-temperature automotive components used in electric drive units, including e-motors, power electronics, housings for high-temperature electrical connectors, electric and electronic devices and telecommunication equipment components that need excellent heat resistance. The materials also offer stiffness and toughness to replace metal in more traditional and structural
30 INJECTION WORLD | May 2021
properties, including volume resistivity and dielectric strength above 150°C. The materials also maintain electrical properties, like comparative tracking index (CTI), after exposure to high tem- peratures over time. The compounds were de- signed to ensure hydrolytic stability against new EV cooling fluids.
“Solvay continues to achieve new performance milestones for our Amodel PPA family of technolo- gies to meet our customers’ increasingly stringent requirements,” says Brian Baleno, Head of Market- ing-Transportation at Solvay Specialty Polymers. “Industries from automotive to electronics to telecommunications are raising the bar for proper- ties such as heat resistance, strength, stiffness and electrical performance. Now, with the launch of Amodel Supreme PPA, we can meet or even surpass these high expectations and offer custom- ers a new alternative to traditional metal and conventional polymers.” BASF has expanded its Ultramid Advanced PPA
portfolio with carbon-fibre reinforced grades with fillings of 20, 30 and 40%. The company says that these new materials make lightweight parts and can safely replace aluminium and magnesium without loss in stiffness and strength and are electrically conductive. The new grades combine these proper- ties with the advantages of Ultramid Advanced N (PA 9T), which provides high dimensional stability due to low water uptake, good chemical and hydrolysis resistance, high strength and modulus. The new carbon-fibre reinforced grades can be used to manufacture automotive structural parts for body, chassis and powertrain. With this offering, BASF complements its PPA portfolio of more than 50 grades already available on the market. The mechanical performance of the new carbon-
fibre reinforced PPA grades can be tuned by the choice and the content of the carbon fibre, as well as by the additive technology. Ultramid Advanced N3HC8 with 40% carbon fibre filling shows a better strength and modulus at 80°C (conditioned) than magnesium or aluminium. “Our new PPA com- pounds with carbon fibres are the ideal metal
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