ADDITIVES | POLYAMIDES
Budenheim’s BUDIT 617, an HFFR system for PA based on melamine polyphosphate, meets the challenge of providing a high glow-wire ignition temperature (>800°C) and low corrosion. The FR also acts synergistically with phosphinates. The latest flame retardant introduction from
Lanxess is Emerald Innovation NH 500, a phospho- rous-based product designed primarily for E&E parts made with glass fibre-reinforced engineering thermoplastics, such as PA6 and PA66. The company says the flame retardant provides performance that passes relevant fire safety tests. The ImerShield line of performance minerals from
Above: HFFR flame retard- ants are increasingly used in PC compounds for E&E applications
Right: Gabriel- Chemie is targeting its latest halogen- free FR masterbatches and PA
compounds for applications such as electrical conduit
Resist XTR Orange 9798 product launch last year, David Caro, Advanced Development Engineer for Plastic Colorants at Milliken, said the colorant is heat stable to 305°C during processing of PAs and meets the 1,000h heat aging test at 120-130°C. The new colorant is designed to be used at an addition of 0.5-1% in the final part. At this high level there can be some influence on physical properties but tests so far show it meets require- ments. Caro say it is being tested by a number of OEMs for EV applications and is available for sampling in both Europe and the US. Milliken’s Resist line of dyes and pigments for plastic compounds and masterbatches was launched in 2017. The company says, following the introduction of brilliant orange, it plans to introduce a number of other high chromatic colorants, including brilliant shades of yellow, red, blue and green.
Fighting fire Flame retardants are a key ingredient in many PA formulations due to their end-use applications—electrical connectors being a prime example—and suppliers continue to introduce non-halogen or halogen-free flame retardants (HFFR) based on various chemistries. “The growth of appliances and control devices
in IoT [Internet of Things] and 5G networks, as well as in e-mobility, requires products with improved fire safety. Within electric vehicles, many parts are in close contact with electricity. High voltages in complex and sensitive electronic systems represent a major risk to safety,” says Julia Eichorn, Marketing Manager in the Material Science Division at Budenheim.
Eichorn says that a growing number of plastic components in these systems require flame retardants and that HFFRs are increasingly used.
20 COMPOUNDING WORLD | April 2023
Imerys act as synergists to help flame retardant additive systems meet performance requirements in intumescent PA6 and PA66 formulations for E&E applications.
“ImerShield products act as synergists to help meet and exceed existing FR classifications (for example to achieve UL94-V0 rating at 0.4 mm thickness) and reduce the loading of FR additive, resin, and/or glass fiber,” says Douglas A Smith, Vice President, Polymers and Coatings, Perfor- mance Minerals Americas. “Depending on the product selection, they can help to improve the reinforcement of plastics, reduce equipment corrosion or improve rheology and melt flow.” He adds that the products can also help reduce the carbon footprint of a formulation. The latest masterbatch
introductions for PA from Gabriel-Chemie include halogen-free flame retardants in
PA6 and PA12 carriers. The company offers red phosporous FRs as well as grades without red phospor-
ous that can be provided in combination with colour and/or UV stabilisers. The masterbatches can be used in PA6, PA66, and PA12 and are said to be suitable for a broad range of end-use applications, including electrical conduits and other E&E parts.
CLICK ON THE LINKS FOR MORE INFORMATION: �
www.byk.com �
www.clariant.com �
www.brueggemann.com �
www.caiadditives.com �
www.milliken.com �
www.budenheim.com �
www.lanxess.com �
www.imerys.com �
www.gabriel-chemie.com
www.compoundingworld.com
IMAGE: BUDENHEIM
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