Abstract: Glass fibers were used as raw materials to weave three-dimensional full five-directional braided fabrics by using three-dimensional braiding machine used with automatic module-combination rotation method. Braiding forms of 1×1,1×2,1×3 and 2×2 are included,and the four braided fabrics were then compounded with epoxy matrix to form three-dimensional full five-directional braided composites. Tensile properties were tested by using universal material testing instrument (Instron) and the influence of braided forms on the tensile properties of the composites were investigated. The results show that the tensile property of braiding form 1×1 is the highest,and that of braiding form 1×3 is the lowest. The braiding form 1×2 makes the best use of single yarn strength,while the braiding form 1×3 makes the worst.

Key words: three-dimensional full five-direction, braided forms, braided composites, glass fiber, tensile property