Abstract: PBO fiber composite materials are fabricated to detect manufacture processing parameters, such as epoxy formula system, immerse tension and winding tension so on. The optimum parameter of process is studied, emphasizing on the research of the effect of the impregnated and wound process on the mechanical property of NOL ring composites. The results show that the tension property of poly(p-phenylene benzobisoxazole （PBO） fiber-reinforced composite is very excellent, but its interlaminar shear strength is low because of its inactive fiber surface. It appears that PBO fiber composite is required for high strength and toughness of epoxy system to develop high and strong characteristic of PBO fiber. When the ratio of winding tension/roving breaking load is 3.5%, the NOL ring measurements indicate that a significant increase in the interlaminar shear strength of up to 29MPa.

Key words: aerospace composite, processing parameter, interlaminar shear strength, winding manufacture