PBO Fibre Technical Information
Phenylene benzobisoxazole (PBO) was ﬁrst developed in the 1980’s and is the world’s strongest man-made ﬁbre. It is also the ﬁrst organic ﬁbre whose cross-sectional strength outperforms both steel and carbon ﬁbre. It is manufactured by Toyobo™ under the brand name ZYLON®. PBO is a rigid-rod isotropic crystal polymer that is spun by a dry-jet wet spinning process.
PBO fibre has the following key characteristics for thermal applications:
- Excellent strength & modulus.
- Good flame resistance.
- Excellent thermal stability.
- Excellent creep resistance.
- Good chemical resistance.
- Whilst PBO does not decompose until temperatures of 650°C are reached, its tensile strength weakens at far lower temperatures and further still in humid environments.
- Very poor UV resistance.
- Poor compressive strength.
- Strength loss in exposure to strong acids.
Please click here to download Toyobo’s for their PDF for general and technical information.
*ZYLON® is a registered trademark of TOYOBO Co. Ltd.