| 摘要 |
PURPOSE:To obtain the titled yarn having improved slipping properties, etc., by dissolving specific amounts of poly(p-phenylene terephthalamide) and aliphatic polyamide in concn. sulfuric acid to prepare dope, coagulating the dope, beating and fibrillating it. CONSTITUTION:80-99wt% poly(p-phenylene terephthalamide) and 1-20wt% aliphatic polyamide such as nylon 6 is dissolved in 95-101wt% concn. sulfuric acid to prepare optically anisotropic dope. The anisotropic dope is extruded through an orifice to a gas, and introduced to a coagulating bath consisting of an aqueous solution of sulfuric acid, etc. and coagulated. The yarn is drawn from the coagulating bath at a speed producing >=3 spinning draft, beaten and fibrillated to give the desired polyamide yarn.
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