ADDITIVES | POLYAMIDES
Right:
E-mobility is one of the drivers of growth for HFFR PA
compounds, according to Clariant
and heat management are important. Thermally conductive additives, such as Huber’s alumina- based Martoxid TM-4000 series, provide balanced properties of thermal conductivity up to 2.5 W/m.K, improved mechanical properties, flame retardance and processability, according to Panofen. FRX Polymers, the manufacturer of Nofia polyphosphonate flame retardants, is also actively working on flame retardants for polyamides. The company says that its flame retardant has been successfully used in a high-performance PA targeted at electric vehicles. Separately, FRX reports that a Nofia FR is soon to be commercial- ised in a PA masterbatch for a high-performance blended-textile application. In this application, the Nofia FR offers improved melt processability and the sustainability benefits of a non-halogen polymeric FR, the company claims.
Below:
Budenheim’s Budit HFFR’s are well matched to glass reinforced PAs for E&E applications
Adding capacity Increasing use of HFFRs is also predicted by Clariant, which announced at the end of last year that it is building new capacity for its Exolit OP FRs at its chemical production site at Daya Bay, Hu- izhou, Guangdong Province, China. The company says the local production capacity will allow it to more quickly supply customers in China in the fast-growing areas of E&E, e-mobility, 5G commu- nications technology and transportation. Clariant plans to invest around €57m in the project and expects the facility to be completed in 2023. Clariant says that the Exolit OP range is based on aluminum diethyl-phosphinate (DEPAL) and carries its EcoTain sustainability label, which recognises its good environmental and health profile. In PA, Exolit can achieve a UL94 V-0 rating down to 0.4 mm, together with good electrical properties (a CTI of 600V), thermal stability, and good mechanical properties, reports the company. Exolit grades tailored for improved glow wire ignition test performance for use in unattended household appliances are being developed and are expected to be launched this year.
Clariant also sees increased demand for its
reduced carbon footprint Exolit OP Terra FRs. These grades contain up to 100% renewable carbon content and are said to be “drop ins” for the company’s standard Exolit OP grades. Budit 617, recently introduced by Budenheim, is
an HFFR system based on melamine polyphosphate and synergists. The additive is said to be suitable for use in glass fibre reinforced PA compounds, particularly for E&E use. It says that compounds using the additive achieve a value greater than 800°C in the glow wire ignition temperature test and UL94 V-0 classification for thicknesses above 0.8mm. It is also said to offer low corrosion, low smoke toxicity, and low smoke density. Another PA additive from Budenheim is the Budit F Series of phosphate-chemistry based endothermic chemical foaming agent concen- trates, which can offer an alternative to physical foaming. Budit F24, for example, is an anhydrous foaming agent suitable for PAs that are susceptible to hydrolysis. Advantages over physical foaming include more controlled cell formation, better surfaces (due to fewer sink marks), improved melt flow, and shorter injection moulding cycle times, according to Tobias Moss, Innovation and Applica- tion Development Manager for Budenheim’s Business Unit Material Ingredients (speaking at AMI’s Performance Polyamides conference).
CLICK ON THE LINKS FOR MORE INFORMATION: � Avakian Polychem Consulting �
www.brueggemann.com �
www.grafe.com �
www.lanxess.com �
www.cabotcorp.com �
www.baerlocher.com �
www.hubermaterials.com �
www.FRXpolymers.com �
www.clariant.com �
www.budenheim.com
42 COMPOUNDING WORLD | February 2022
www.compoundingworld.com
IMAGE: SHUTTERSTOCK
IMAGE: BUDENHEIM
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