PYRON® Product Forms

Product catalog summary

Introduction to PYRON®
PYRON® is a registered trade name for oxidized polyacrylonitrile fibers (OPF) produced by Zoltek. These fibers are known for their excellent thermal and fire resistance, making them suitable for various applications including nonwovens, yarns, and fabrics.

Manufacturing Process
PYRON® fibers start as polyacrylonitrile (PAN) and are processed through a proprietary high-temperature oven to stabilize their molecular structure. The manufacturing processes are ISO 9002, QS-9000, and AS9000 certified, ensuring consistent quality.

Properties of PYRON®

Inherent flame resistance and effective heat-blocking capabilities.
Does not burn, melt, or drip; instead, it chars.
Low toxic gas generation in fires.
Electrically nonconductive, serving as an effective electrical insulator.

Applications

Protective Apparel: Enhances flame and heat resistance, reducing heat stress and providing protection in flashover situations.
Automotive: Improves thermal and acoustical insulation in vehicles, especially in engine compartments.
Aircraft Seats: Provides improved heat-blocking and fire-barrier performance, protecting polyurethane foam in seats.
Furniture: Used in fire-blocking fabrics to delay ignition and burning of polyurethane foam.
Mattresses: Acts as an effective heat insulator and fire barrier, reducing fire-related fatalities.
Aircraft Brakes: Used as reinforcement material in brake friction materials, tolerating high temperatures during landings.

Contact Information
Zoltek Corporation has sales offices in St. Louis, MO, and Schwaig-Oberding, Germany, with manufacturing locations in Missouri, Texas, and Hungary.

Catalog excerpts

?For stretch breaking andprocessing into yarns?For cutting into staple > ?For use in nonwovens?For yarns on conventional spinning equipmen t ?Excellent dispersibility in wet-laid nonwovens > ?Excellent thermal and fire resistance alone or in blends with other fibers?Constructions engineered for specific applications > ? Processable into fabrics on looms and knitting machines > PYRON ή is a registered trade name for oxidizedpolyacrylonitrile fibers (OPF) produced by Zoltek.Zoltek has produced PYRON OPF for over 20years and is the largest producer in the world. PYRON starts as polyacrylonitrile...

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PYRON > ή has inherent flame resistance > . . . an effective heat-blocking & fire barrier material AramidFR PolyesterPYRON PYRON > ή retains its appearance,hand and textile characteristics after open flame exposure.PYRON > does not burn* > 1250ΰC flame exposure for 30 seconds Stable Char ή *(in standard ambient air conditions) size="-3">

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PYRON > does not melt or drip . . . it chars! . . . Good Textile Processability > 450040003500300025002000150010005000 35 KW/m2 heat source for 4 min. PYRON ή fibers are electrically nonconductive and functionas an effective electrical insulator even after exposure to heatand open flames. Gas Generation (ppm) PYRON > 8 Electrical Resistivity > PYRON Cotton FR PolyesterNeopreneFoam 8 x 10 (ohms.cm) Hydrogen Chloride Carbon MonoxideHydrogen Cyanide PYRON testing by Omega Point to BBS 7239-88(similar to ASTM E662) size="-4">

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PYRON > ή is an inherently fire resistant fiber specially suited to improve the performance offlame and heat resistant protective apparel. PYRON > has excellent heat insulation propertiesderived from itΒs heat stabilized polyacrylonitrile chemistry and resultant low thermal conductivity. PYRON > liners used in protective apparel have exceptional heat blockingcharacteristics which can help reduce an individualΒs overall heat stress and provide enhanced protection in flashover situations. PYRON > fibers are also durable for reliable service performance as a stand alone fiber or in blends. > Whether...

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PYRON® Product Forms

PYRON® Product Forms

Catalog excerpts

All Zoltek catalogs and technical brochures