43聚合物基体 43聚合物基体 聚合物基体 聚苯硫隆(PPS) 热塑性基体 热固性基体 聚砜(PES) 聚酰胶、聚碳酸酚醛树脂 环氧树脂 不饱和聚酯 酯、聚砜、聚苯 硫醚、聚醚醚 聚PE◎ooc Important characteristics 44增强纤维 3. A very high degree of flexibility Flexibility The flexibility of a material is determined by shape, size of the cross section, and its radius of curvature We can use the inverse of the product of bending moment(M) and the radius of curvature (R)as a measure of flexibility. MR End Fiber diameter of materials with flexibility equal to that of6 热塑性基体 酚酚酚酚 环环酚酚 不不不不不 热固性基体 不聚聚聚聚 聚酰胺、聚碳酸 酯、聚砜、聚苯 硫醚、聚醚醚 酮、氟塑料 4.3 聚合物基体 聚苯硫醚 (PPS) 聚砜 (PES) 聚醚醚酮 (PEEK) － S－ n O S = O = O －－ n － O C = O －－ n － O 4.3 聚合物基体 4.4 增强纤维 1. A small diameter 2. A high aspect ratio 3. A very high degree of flexibility Important characteristics Flexibility 4 1 64 MR Eπd = The flexibility of a material is determined by shape, size of the cross section, and its radius of curvature. We can use the inverse of the product of bending moment (M) and the radius of curvature (R) as a measure of flexibility. Fiber diameter of materials with flexibility equal to that of a 25-µm-diameter nylon fiber. d (µm) E (GPa) 100 200 300 400 500 25 20 15 10 5 0 nylon glassmullite Si3N4 C ZrO2 Al2O3 B SiC