Toho Tenax has revised and renewed a long-term contract to supply PYROMEX, an oxidised PAN fibre (OPF) to UTC Aerospace Systems (UTAS), a member of the United Technologies (UTC) group.
Under the terms of the agreement, Toho Tenax and UTAS have extended their contract for another five years, to 2030.
Teijin says that, in addition, Rockwood Tennessee facility of Toho Tenax America has been awarded UTC Supplier Gold status and will increase its PYROMEX OPF capacity by 40 percent by utilising one of its inactive carbon fibre lines. Recommissioning of this line is expected to take place in late 2016.
According to Teijin, Toho Tenax supports upstream and downstream development in aerospace business field by providing a wide range of TENAX-based products, PYROMEX, as well as other carbon fibre reinforced thermoplastic (CFRTP) materials. Increased production of PYROMEX will enable Teijin to expand its carbon fibres and composites business in the field.
PYROMEX OPF offer high chemical purity and consistent material properties, enabling customers to develop high-performance products.
Teijin explains, carbon fibre is made of specialised polyacrylonitrile (PAN) as a precursor. The precursor is oxidised at 200-300 degrees centigrade and carbonised at 1,000–2,000 degrees centigrade in an oxygen-free environment. Toho Tenax sells flame-resistant and chemical resistant fibre produced by this oxidation process as PYROMEX OPF, which is widely used in aircraft brake-friction materials, flame-retardant sheets and specialty textiles, sodium sulfur (NaS) electrodes in batteries and more.