HIGH STRENGTH POLYETHYLENE FIBER
PROBLEM TO BE SOLVED: To provide a high strength polyethylene fiber which has been difficult to produce by a conventional gel spinning method, in greatly high productivity. SOLUTION: This high strength polyethylene fiber is characterized in that the sizes of crystals originated from monoclinic cryst...
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| creator | FUKUSHIMA YASUNORI SAKAMOTO GODO |
| description | PROBLEM TO BE SOLVED: To provide a high strength polyethylene fiber which has been difficult to produce by a conventional gel spinning method, in greatly high productivity. SOLUTION: This high strength polyethylene fiber is characterized in that the sizes of crystals originated from monoclinic crystals are ≥9 nm and the tensile strength of the fiber is ≥30 cN/dtex. The method for producing the high strength polyethylene fibers comprises dissolving ultrahigh mol.wt. polyethylene having an intrinsic viscosity of ≥8 dL/g in a solvent mixture comprising a good solvent for the polyethylene and a poor solvent in a weight ratio of 20:80 to 99:1 in a polyethylene concentration of 0.5 to 50 wt.%, extruding the formed polyethylene dope from orifices, cooling, and then drawing the filament-like products. The high strength polyethylene fiber contains the solvent having a viscosity index of ≤0.6 in a content of ≥5 ppm. COPYRIGHT: (C)2008,JPO&INPIT |
| format | Patent |
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SOLUTION: This high strength polyethylene fiber is characterized in that the sizes of crystals originated from monoclinic crystals are ≥9 nm and the tensile strength of the fiber is ≥30 cN/dtex. The method for producing the high strength polyethylene fibers comprises dissolving ultrahigh mol.wt. polyethylene having an intrinsic viscosity of ≥8 dL/g in a solvent mixture comprising a good solvent for the polyethylene and a poor solvent in a weight ratio of 20:80 to 99:1 in a polyethylene concentration of 0.5 to 50 wt.%, extruding the formed polyethylene dope from orifices, cooling, and then drawing the filament-like products. The high strength polyethylene fiber contains the solvent having a viscosity index of ≤0.6 in a content of ≥5 ppm. 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| subjects | APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING TEXTILES |
| title | HIGH STRENGTH POLYETHYLENE FIBER |
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