Being production manner of all the aromatic polyamide filament null all the aromatic polyamide filaments which are produced by the production

摘要

All the aromatic polyamide filaments which are produced by the production method and particular method of all the aromatic polyamide filaments are disclosed. Method of this invention features that you adjust the point in time when all the aromatic polyamide polymers are thrown to the extrusion inside of a plane for spinning dope production, grain size of all the aromatic polyamide polymers and/or on the basis of intrinsic viscosity (iv).Strength and especially side shocking strength of all the aromatic polyamide filaments it is possible to improve inevitably in polymerization process according to this invention, in spinning dope manufacturing process, by controlling the embrittlement of all the aromatic polyamide polymers which are by the sulfuric acid solvent considerably, in addition are generated low be able to use also IV polymer, with that production cost it can retrench. Selective figure Figure 3