| 摘要 |
PROBLEM TO BE SOLVED: To provide an aromatic copolyamide bulletproof material having excellent bulletproof properties.SOLUTION: The woven goods becoming bulletproof materials are constituted by using a fiber obtained from a composition of two kinds of aromatic copolyamides having specific structural repeating units. That is, the aromatic copolyamide being the component of the aromatic copolyamide composition (i) comprises a structural repeating unit (1) represented by formula (1) and a structural repeating unit (2) represented by formula (2), (ii) has 3.5-6.5 of the intrinsic viscosity measured as a solution in a 98% concentrated sulfuric acid, the solution having 0.5 g/dL of the polymer concentration at 30°C, and (iii) has 0.5-2.0 of the difference in the intrinsic viscosity, and the aromatic copolyamide composition has 4.5-6.0 of the intrinsic viscosity. |
