A liquid crystalline polyester resin developed by the Carborundum Company in the 1960s. It is currently manufactured by Saint-Gobain, which acquired the Carborundum Company years ago.
Applications
It can be easily blended with
PTFE. This can give it an even wider range of applications inculding
- low-k dielectric material
- self lubricating bearings
- O-rings
- piston rings
- seals
Properties
- Flexural Strength ----------------------- 5500 psi
- Elastic Modulus ------------------------ 1000000 psi
- Thermal Conductivity ----------------- 3.9 BTU/hr-ftxft
- Glass Transition Temperature ----- >600°F
- Density ------------------------------------ 1.44 g/cc
It is resistant to most solvents except sulfuric acid.
Composition
The repeating structure is.
_ Oxygen _
| || |
| - Carbon - Benzene Ring - Oxygen - |
|_ _|
Manufacturing Notes
It is easily
machinable, and when used as an abradable seal for jet engines, it is plasma sprayed on.
History
It is one of the first liquid crystalline polyesters, a family of materials known for there exceptional stiffness and thermal stability. It is named after James Economy, who was the head of research at the Carborundum Company.
Web Reference
http://www.ekonol.com