Zylon® PBO

Zylon® PBO

 

Zylon® PBO fiber is composed of rigid molecular chains  [poly(p-phenylene-2,6-benzobisoxazole)]. These fibers and filaments are characterized by high tensile strength (10 times higher than steel), excellent impact energy absorption (twice that of para-aramid), and exceptional thermal stability (limiting oxygen index of 68). Zylon® PBO fiber is available in chopped fiber, staple fiber, spun yarn, and continuous filament.

I. Properties

TypeUnitRegular

<AS>

High Modulus <HM>
Filament decitexdtex1.71.7
Densityg/cm31.541.56
Tensile StrengthcN/dtex3737
GPa5.85.8
KSI840840
Tensile ModuluscN/dtex11501720
GPa180270
MSI2639
Elongation at Break%3.52.5
Melting Temperature°CNoneNone
Decomposition Temperature in Air°C650650
Coefficient of Thermal Expansionppm/°C-6
Limiting Oxygen Index6868
Dielectric Constant at 100kHz3.0
Dissipation Factor0.001

Typical property values are not to be construed as specifications.

II. Product Availability

TypeRegular <AS>High Modulus <HM>
Filament
Yarn Count (dtex)278; 555; 1100; 1670273; 545; 1090; 1640; 3000
Filaments (dtex)166, 315, 664, 996, 1158, 1992166, 315, 664, 996, 1158, 1992
Cylindrical bobbin Innerdiameter (mm)9494
Cylindrical bobbin Length (mm)216216
Chopped Fiber
Cut Length (mm)1; 3; 61; 3; 6
Staple Fiber
Cut Length (mm)44; 51; 64; 76n/a
Spun Yarn
Yarn Count (Ne)20/1 20/2

 

III. Flame Resistance

Zylon®Para-AramidMeta-Aramid
warpfillwarpfillwarpfill
Char Length (cm)<0.5<0.53266
After Flame (sec)000000
After Glow (sec)11161622
LOI682929

Vertical Flame Test – plain woven fabrics with 20’s spun yarn

IV. Applications

Chopped Fiber

  • Reinforcement for gaskets
  • Plastic reinforcement

Staple Fiber

  • Heat resistant felt
  • Media for high temperature filtration

Spun Yarn

  • Racing and riding suits
  • Protective cloth for fire-fighting
  • Heat and flame resistant welding apparel
  • Cut and abrasion resistant fabrics (gloves and safety shoes)

Continuous filament

  • Reinforcement for tires, belts, and hoses
  • Reinforcement for concrete and plastic
  • Tension member for fiber optic cables
  • High tension rope or cord
  • Ballistic vests and helmets
  • Yacht sailcloth
  • High temperature filtration

VI. Packaging

Zylon® Filament Yarn

Linear
density (dtex)
Number
of filaments
TypeWeight
of bobbin (kg)
Number of
bobbins/carton
Minimum
order
278166AS2.56One carton
555332AS5.06
1110664AS
1670996AS
273166HM2.56
545332HM
1090664HM
1640996HM