MATERIALS | HIGH TEMPERATURE PLASTICS
Valves at low temperature
Polymers can also be used for extremely low temperature applica- tions. Victrex, which supplies both Peek and PAEK, says its Victrex CT polymers have met the stringent specifications outlined by Shell for ball valves in cryogenic services. New standards for low-temperature valves now include ‘Cryo-
Peek’ as a designated material for cryogenic ball valve applications. Victrex CT polymers have met these specifications, making them a viable alternative to PCTFE in these applications. The updated MESC SPE 77/302 and SPE 77/200 standards recog-
nise Peek as soft seat/insert material for ball valves used in cryogenic conditions as ‘Cryo-Peek’. This approval expands opportunities for valve manufacturers. Key advantages of Victrex CT polymers include an extended
temperature range from -269°C to higher than +260°C, plus improved mechanical and thermal properties compared to fluoro- polymers like PCTFE. “Victrex CT products are the latest example of us developing and
commercialising new Peek products that deliver against our custom- ers’ needs, enabling them to further innovate,” said Jakob Sigurds- son, CEO of Victrex.
The 40% glass fibre-reinforced grade of its
Durafide rG-PPS will be available by December 2025, it says. Polyplastics will be responsible for optimal
formulation and objective quality assurance in the project, which intends to achieve 100% circularity of engineering plastics by expanding the applica- tions of mechanically recycled materials. As part of the company’s mechanical recycling business, scraps of glass fibre-reinforced PPS will be collected from customers through an Open PIR Mechanical Recycling Scheme – and used as a raw material to make Durafide rG-PPS. Initially, strict acceptance inspections will be conducted, and metal will be removed. In later processes, recycled materials and some virgin materials will be refor- mulated to meet the target specifications and
compounded under optimal conditions. The materials will undergo the same quality assurance system as that for virgin materials and will then be shipped to customers. Polyplastics says its recycling scheme will help our customers to reduce and use waste while reducing the carbon footprint of their products. For now, the glass-fibre reinforced PPS collected from customers will be specific grades of its Durafide glass fibre-reinforced PPS. The company aims to develop a high filler grade as the second iteration of Durafide rG-PPS. “We intend to establish a system to supply that
grade and the 40% glass fibre-reinforced grade to customers in Japan,” said the company. “In future, we will build a ‘local production for local consump- tion’ recycling chain that is complete within each region or country around the world.”
Biomass PESU BASF says it has developed the world’s first biomass-balanced polyethersulfone (PES). With Ultrason E 2010 BMB, fossil feedstock is
replaced with renewable alternatives from waste- based resources and attributed to the product via a certified biomass balance approach, it says. Ultrason E 2010 BMB is a drop-in solution because it is identical to the standard grade in properties, quality, and certification – such as for food and water contact. As a result, customers do not have to re-qualify their applications or adapt existing manufacturing processes for injection moulding or extrusion. “With this addition to our Ultrason portfolio we enable our customers’ green transformation towards more circular solutions – and this as early as possible on their journey to meet their sustain- ability targets,” said Erik Gubbels of global busi- ness development for Ultrason at BASF. Half of the fossil raw materials required for the manufacturing of Ultrason E 2010 are replaced by
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