本研究以PBO(Polybenzoxazole)纖維為主要材料，經由20、40、60和80小時的碳弧光連續照射對PBO纖維的斷裂拉伸強力影響做探討，且利用傳利葉紅外線光譜儀(FTIR)分析碳弧光對PBO纖維的官能基影響；經不同時間的碳弧光連續照射後官能基並沒有改變而只是強弱上的差別。PBO纖維經碳弧光連續照射後其斷裂拉伸強力有明顯下降，因此選用高強力聚酯纖維作為編織飛行傘傘繩的包覆材，同時選用PBO纖維作為芯材；用編識方式之飛行傘傘繩能優於市面上習用。強伸率的曲線圖，配合張力拉伸時透過X光燒射儀(XRD)來分析PBO高分子纖維在拉伸張力作用時的結構變化，結果顯示，4束PBO纖維作為芯材，搭配8束高強力聚酯纖維作為包覆材，可得最佳粗細的丹尼數與斷裂拉伸強力。
The poly (1,4-phenylene-cis-benzobisoxazole) (PBO) fiber have been discussed in this investigation. In the meantime probing the break strength when the PBO fiber passed through the beam from carbon arc radiation with 20, 40, 60 and 80 hours, then analyze the chemical bond of PBO fiber by using the FTIR instrument. The strength will decrease when PBO fiber passed through the beam from carbon arc radiation. Therefore, the high strength polyester fiber as the cover material of the paragliding cord, in the meantime, using the PBO fiber as the core material, Using the braiding the paragliding cord must better than the habitually use on the market, the strength and tension diagram of curves with tension to draw. The change of structure behavior with strain on PBO fiber was investigated using XRD. And know, the core materials are made of 4 ply of PBO fibers, and the cover material are made out of 8 ply HDPET fibers. The results shows that the strength, elongation, denier have good performance on the braided fabric.
