Chemlon 225 GVNH is already in commercial use for the housing of an air filter used in a vehicle engine compartment.
Chemlon 225 GVNH is already in commercial use for the housing of an air filter used in a vehicle engine compartment.

The Chemlon® 225 GVNH compound has a UL 94 ( the standard for safety of flammability of plastic materials for parts in devices and appliances) flammability listing of V0 at thicknesses down to 0.8 mm. Its comparative tracking index (a measure of the electrical properties of polymeric materials) of 600 V is more than double that of a comparable compound with a halogenated (typically brominated) FR formulation. The product is reported to provide superior electrical performance in automotive, residential and appliance applications such as housings with snap-fit assembly, circuit breakers, charger covers and safety switches. The new compound is also 14% less dense, yielding lighter parts.

The Chemlon product is currently UL-recognised only in black formulations, but it is expected to provide a broader range of colourability than brominated FR systems and non-halogenated ones based on red phosphorus, according to Richard Barnes, technical manager. Typically these permit only dark colours.

“Because non-halogenated FR systems have been more difficult to incorporate into glass-filled compounds than brominated ones, relatively few non-halogenated polyamides have been available, particularly in North America,” says Barnes. “Our new Chemlon compound will provide a higher-performance alternative for moulders seeking to serve the world market for components requiring flame retardancy.”

Chemlon 225 GVNH is already in commercial use for the housing of an air filter used in a vehicle engine compartment.

Chem Polymer supplies engineering thermoplastics for the transportation, consumer products, and industrial markets. It produces reinforced and specially modified polyamide compounds under the Chemlon brand. Chem Polymer was acquired by Teknor Apex, Pawtucket, Rhode Island, USA, in 2004.