PBO Fiber (ZYLON®)


What is PBO (ZYLON®)?

PBO FIBER ZYLON®

ZYLON® consists of rigid rod chain molecules of poly(p-phenylene-2, 6-benzobisoxazole)(PBO).

ZYLON® fiber is a new high performance fiber developed by TOYOBO using the latest material science and state-of-the-art fiber technology.

Chemical structure of ZYLON®

Mechanical Property

Tensile Strength and Modulus


Flame Resistance and Thermal stability


Comparison with Other High-performance Fibers

  Tensile Strength Tensile Modulus Elongation at Break Density Moisture Regain LoI Heat Resistance*
cN/dtex g/d GPa cN/dtex g/d GPa % g/cm³ %
ZYLON-AS 37 42 5.8 1150 1300 180 3.5 1.54 2.0 68 650
ZYLON-HM 37 42 5.8 1720 2000 270 2.5 1.56 0.6 68 650
p-Aramid 19 22 2.8 750 850 109 2.4 1.45 4.5 29 550
m-Aramid 4.7 5.3 0.65 124 140 17 22 1.38 4.5 29 400
Steel Fiber 3.5 4 2.8 260 290 200 1.4 7.8 0
Carbon Fiber 20 23 3.5 1310 1480 230 1.5 1.76
PBI 2.7 3.1 0.4 40 45 5.6 30 1.4 15 41 550
Polyester 8 9 1.1 110 125 15 25 1.38 0.4 17 260

* Melting or Decomposition

ZYLON® Fiber Property

Type AS (Regular) HM (High Modulus)
Filament Decitex (dtex) 1.7 1.7
Density (g/cm³) 1.54 1.56
Moisture Regain (65% RH) (%) 2.0 0.6
Tensile Strength (cN/dtex) 37 37
(GPa) 5.8 5.8
(KSI) 840 840
Tensile Modulus (cN/dtex) 1150 1720
(GPa) 180 270
(KSI) 26 39
Elongation at Break (%) 3.5 2.5
Melting Temperature (℃) none none
Decomposition Temperature in Air (℃) 650 650
Coefficient of Thermal Expansion (ppm/℃) -6
Limiting Oxygen Index 68 68
Dielectric Constant at 100kHz 3.0
Dissipation Factor 0.001

Product Lineups

Staple Fiber AS HM

Cut Length (mm) 4476
Chopped Fiber AS HM

Cut Length (mm) 136 136
Spun Yarn AS HM

Yarn Count (Na) 20/120/230/1
(Nm) 34/134/251/1
Filament AS HM

Linear Density (dtex) 16527855511101670 273545109016403270
Filaments 99166332664996 1663326649961992
Cylindrical Bobbin Innerdiameter (mm) 94 94
Cylindrical bobbin Length (mm) 216 216

Applications

Sports

Bicycle Spokes and Tire Reinforcements

Yacht Ropes

Rackets

Racing Cars

Sporting Goods Composites

Industrial Materials

Heat Resistant Felt

Cable Cover for Welding

Cable Tension Member

Cement Reinforcement

Aerospace


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