MATERIALS | HIGH TEMPERATURE PLASTICS
and chemical resistance. DSM is offering it as a solution for metal replacement and surgical tools. DSM says ForTii Care offers superior perfor- mance in a wide range of demanding devices, such as minimally-invasive surgical tools, handheld instruments, surgical robots and trauma fixation devices. With the ability to withstand mechanical stress at high temperatures (over 150°C) and corrosive chemicals (pH 0.5 to 13), the material achieves weight savings of 50% or more when used to replace metal alternatives. DSM says ForTii Care outperforms polyacryl-
Above: ForTii Care from DSM can replace metal and ceramics used to manufacture medical rubber gloves, reducing operating costs and environmental impacts from manufacturing
reinforced and unreinforced versions and UL approval is on its way.” To improve electric vehicle motor efficiency, and
ultimately reduce energy consumption, DuPont Mobility & Materials has developed an improved design for hybrid bobbins, an integral part of e-motors. The design benefits from the high insulation properties and chemical resistance of a grade of Zytel HTN specialty polyamide as well as the company’s Nomex heat- and flame-resistant fibres. Motors designed with this technology can generate more power in less space thanks to lower volume of the bobbin in the corner areas. Manufac- turing efficiency is also improved, with the design enabling automated production of the bobbins. DuPont’s solution has already been adopted by one global OEM. The company’s expertise in thermoplastics as well as automotive adhesives, plus heat/flame resistant fibre technology, is proving a powerful draw for manufacturers tasked with advanced mobility applications, notes Giacomo Parisi, marketing director for advanced mobility solutions at DuPont. This April,DSM, which is already active in the
healthcare sector with various non-plastics prod- ucts, launched a new portfolio of engineering materials for medical devices. The new family of advanced medical-grade material solutions includes Arnitel Care polyester-based thermoplas- tic elastomer (TPC), Arnite Care polybutylene terephthalate (PBT), and ForTii Care PPAs. The materials are intended for use in a broad
range of important non-invasive medical devices. They have been tested to meet or exceed impor- tant global standards such as US FDA food contact compliance, ISO-10993, and United States Pharma- copeia (USP) Class VI standards. ForTii Care P1G6 is based on DSM’s ForTii
PA4T-based polymer. Key properties are mechanical strength, stiffness, high-temperature performance,
18 INJECTION WORLD | September 2021
amide (PARA) and other high-performance PPAs and is more cost-effective than polyetheretherk- etone (PEEK). The material can undergo more than 100 cycles of steam sterilisation without significant impact to its mechanical properties. Heat-stabilised “regular” polyamides can take on
more expensive high-heat polymers in some areas. Domo Engineering Plastics points to its Technyl Red range of heat-stabilised polyamides, designed especially for automotive applications in IC and hybrid engines operating at continuous tempera- tures between 200°C and 220°C. The supplier says the compounds deliver superior thermal aging stability without compromising performance or cost-efficient processability. Recommended melt and mould temperatures are significantly lower than for competing polyamides and polyphthalamides, saving energy during process- ing and cutting part cooling time, Domo adds. Technyl Red S PA6/66 is for applications operat-
ing at a continuous temperature of 200°C (2,000h) or even 210°C (1,000h), such as turbo air ducts, charge-air coolers and cylinder head covers. It has high impact resistance, high flowability, superior surface aspect and “excellent” weldability. It is designed to resist a continuous operating tempera- ture up to 210°C (at 1,000h) or 200°C (at 2,000 hours). Technyl Red J, which is based on PA66/6T, can
operate at temperatures up to 210°C (3,000h) or 220°C (2,000h), making it suitable for applications such as air intake manifolds with integrated water charge air cooler, resonators, cylinder head and engine covers, as well as water charge air coolers and turbo air ducts. It flows like a PA66. It is well-suited for both vibration and hot gas welding, delivering high burst pressure levels. In late July, Solvay launched a new grade of
KetaSpire PEEK, KT-850 SCF 30, designed for precision brake system and e-mobility electronic pump components. The product was developed to provide better sealing performance over standard 30% carbon fibre filled PEEK grades.
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IMAGE: DSM
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