Polyimide chemistry
Sealing Insulation and Protection
P84® polyimides are known for their high thermal resistance characterised by a glass transition temperature of 315°C as well as their non melting properties. The permanent flame retardancy of P84® is classified by the LOI (Limiting Oxygen Index) of 38 percent O2.
P84® polyimide fibres show a very low thermal conductivity. In combination with the high specific surface area and the fact that P84 felts are quite bulky the construction offers excellent insulation capabilities.
Application areas for P84® fibers
Applications |
Discription |
Insulating material |
P84® fibers having a unique multilobal cross section which offers a much higher specific surface compared to round fibers are the ideal base material for insulation products. Rigid insulation boards out of P84® fibers are known under the brand Pyropel®. |
Braided Packings |
P84® is an excellent choice for use in the sealing industry due to high thermostability, a good chemical resistance, a high dimensional stability and pressure resistance even at high temperatures, good flexibility which minimizes shaft wear and a low heat expansion index. |
Fabrics and knitwear |
P84® polyimide fibers are mainly used in fabric blends with major objective on best possible protection and wear comfort. Main blending partners are Viscose FR and p-Aramides. |