Preparation of Optical Reflective Fiber with Transparent Nylon
Optical reflective fiber has been widely used in protective clothing for road workers because of high-reflective effect which promised a strengthened visibility at night or in poor visibility. In this paper, four fibers with different cross section shape, i.e., round, triangle, rectangle and hollow pentagon, were melting spun from the transparent nylon which was analyzed and characterized previously. The spinning conditions were discussed in detail, and the hetercliteness of profiled fibers were also calculated. Both the reflectivity and brightness testing indicated that all profiled fibers showed the better reflective ability than the round one. Moreover, the mechanical, thermal and crystalline properties of round and triangle fibers after drawing were characterized.