| 摘要 |
PURPOSE: Aramid, aramid filament and film are provided to ensure uniform properties and color fastness, and to prevent oxidation by an external environment. CONSTITUTION: A method for preparing aramid comprises the steps of: reacting aromatic diamine with aromatic dicarboxylic acid halide in a polymerization solvent to prepare a pre-polymer; adding aromatic dicarboxylic acid halide to the polymerization solvent to prepare a polymer; and reacting the polymer with an stabilizer having a monofunctional group to protect an terminal group.
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