Improved Graphite Fiber.
Final technical rept. 1 Oct 79-31 Oct 82,
FIBER MATERIALS INC BIDDEFORD ME ADVANCED MATERIALS DEVELOPMENT LAB
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The purpose of the program was to develop a production method for improved graphite fibers. A goal of 750 x 10 to the 3rd power psi tensile strength at 60-65 x 10 to the 6th power psi modulus was set for the program. Improved 3-4 micron diameter boron strengthened graphite fibers were successfully prepared from Courtaulds SAF polyacrylonitrile fiber precursor in a pilot production plant which has the potential capacity to produce 1 lbhour of graphite fiber. An average tensile strength of 550 x 10 to the 3rd power psi at the 60 x 10 to the 6th power psi modulus level was achieved through a preliminary optimization of the plant processing conditions.
- Laminates and Composite Materials