The NOL rings, laminates and Ф150mm standard pressure vessels of F-12 aramid fiber/ cyanate resin
matrix composites were manufactured by pre-impregnated wind process. The mechanical properties and fracture morphology
of F-12 aramid fiber/ cyanate composites were also studied. The results show that the interlaminar shear
strength(ILSS) was less than 35 MPa,and vessel performance factor (PV / Wc) of Ф150 mm standard pressure vessels
were 34. 22 km. The strength transfer rate of F-12 fiber in Ф150 mm pressure vessels was 70. 22%. The form of fracture
surface mainly reveals tearing and fibrillation of F-12 fiber.