Comparative study for Melt Dry & Wet spinning
মঙ্গলবার, ৫ জুলাই, ২০১১
== | Melt | Dry | Wet |
Investment cost | Low | High | Low |
Environment of Health hazard | Non toxic | Toxic & risk of accident | Toxic |
Heat input | High | Very high | Low |
Solvent | Not required | Only organic | Organic |
Solidification | Cooling | Evaporating | Coagulating |
Spg Speed | 1000-2000 m/min | 600-1200 m/min | 60-160 m/min |
Table of typical Wet Spinning solvent and coagulant
Fiber | Solvent | Coagulant |
Viscose | Aqueous of sodium salt & xanthate ester | Dilute H2SO4+Na2SO4+ZnSO4 |
Acrylic | Dimethyl-acetamide (DMA) | 50% aqueous Dimethyl-acetamide |
PVA | DMF (Dimethyle Formide), Water | 30% aqueous DMF |
Spandex | DMA | 30% aqueous DMA |
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