Genflam® OH‐R thermoplastic flame retardant low smoke zero halogen (LSZH) sheathing compound have been designed specifically for use as an outer covering for armoured cable. This material has been designed to provide the wire and cable industry with a jacketing material made specifically for both indoor and outdoor applications. This unique formulation provides a good balance of physical, chemical and low temperature properties for superior performance in demanding applications. The material has also been designed for ease of processing, allowing for maximum extruder outputs while minimizing manufacturing costs.

KEY FEATURES

• High flame retardancy
• High Resistance to Scuffing
• Excellent processing
• No heavy metals or halogens
• UV stabilized
• RoHS and REACH compliant

PHYSICAL PROPERTIES

Density: 1.51 g/cm³
Tensile: 2000 psi (typical)
Elongation: 200% (typical)
Tear: 40 lbf/in (typical)
Durometer: 95 Shore A
Low Temp. Brittle Point: ‐53ºC
Deformation, 2000g:  49.0%@121ºC   32.2%@100ºC   7.5%@90ºC

COMBUSTION PROPERTIES

Limited Oxygen Index (LOI): 39%
Acid Gas: 0.2%
Smoke Index (ASTM E662):

• Flaming  Ds4 0
• Flaming  Dm20 101
• Non‐Flaming  Ds4 15
  
• Non-Flaming  Dm20 416

Cone Calorimeter (ASTM E1354):

• Time to Ignition (s)  51
• Peak Heat Release (kW/m²)  190
• Time to Peak Heat Release (s)  275
• Total Smoke Release (m²/m²)  471

HEAT AGING

	7d@100ºC	7d@121ºC	10d@110ºC	30d@110ºC	70d@110ºC
Tensile Retention	103%	98%	108%	100%	106%
Elongation Retention	88%	76%	91%	80%	76%

FLUID RESISTANCE

	IRM 902 – 4h@70ºC	Diesel – 24h@25ºC	IPA – 24h@23ºC
Tensile Retention	73%	56%	99%
Elongation Retention	97%	62%	102%

WEATHERING

	720 Hours under QUV Testing
Tensile Retention	101%
Elongation Retention	87%

SUGGESTED RUNNING CONDITIONS

Extruder L/D: 20:1 or 25:1
Comp. Ratio: 1.25:1
Screen Pack: 20 Mesh or none
Screw Type: Single Flight metering, without mixing section
Feed Zone: 250ºF
Center Zone: 300-340ºF
Head/Die: 340ºF
Screw Cooling: 165ºF
Die Cooling: Not recommended
Gradient Cooling: Not recommended
Color Concentrate: 150ºF (recommended)

PROCESSING TECHNIQUES

The Genflam OH‐R jacket has been formulated to process easily on standard extruders used in the production of wire and cable products. This material is designed to process similar to elastomeric compounds, attaining maximum output levels at relatively low shear rates. Care should be taken to ensure that screw compression ratio levels are below 1.5:1, and flow restrictions in the crosshead are kept to a minimum. Melt temperature values above 370ºF (185ºC) should be avoided.

The material can be extruded using either pressure or sleeving techniques. For generation of optimum physical properties, a draw down ratio of 1.25:1 can be used.

All materials are supplied as free flowing pellets, packaged in sealed foil lined boxes and do not need to be dried prior to use. It is recommended that the foil liners be resealed after use to prevent outside contamination or water absorption during storage. If the material has been exposed to a high humidity environment, or the foil liner has not been sealed, it is recommended the material be dried for a minimum of 4 hours at 140ºF (60ºC) in a standard desiccant style dryer prior to use.