The flame retardancy of plastics are typically rated according to:
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The Underwriter Laboratories (UL) 94 classification, either V-0, V-2 or HB
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IEC 60695-2 e.g. Glow Wire Flammability Index (GWFI) of 960°C at 1.6 mm.
Unmodified, unreinforced Akulon grades are rated V-2. Standard glass fiber
reinforced grades are rated HB.
The Akulon and Akulon Ultraflow flame retardant portfolio, engineered for a
variety of uses as electrical insulators, consists of grades meeting either of
the following:
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GWFI 960°C or UL94 V2: at thickness of 1.5 mm or 0.75 mm halogen containing
mineral filled grades halogen free glass reinforced, mineral filled and hybrid
types
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UL94 V0: halogen containing glass reinforced Akulon Ultraflow /
halogen free unreinforced and glass fiber reinforced Akulon grades
Halogen free grades exhibit lower density levels and higher CTI ratings than
the halogen containing materials.
The UL94 V2 or GWFI 960°C certified Akulon grades offer a cost-effective
combination of optimal flame retardancy and excellent mechanical and
electrical properties:
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Provide resistance against fire hazards, meeting UL or IEC requirements
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Have sufficient resistance against shock (charpy impact tests)
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Process smoothly and without problems in any injection molding equipment
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Demonstrate very good resistance to discoloration at high temperatures.
A complete overview of all UL listings is available at your local DSM sales
office or at the ULweb site .
