High-purity viscose fiber and preparation method thereof

The invention discloses high-purity viscose fiber and a preparation method thereof. The high-purity viscose fiber is characterized in that the content of ash in the high-purity viscose fiber accounts for 10-200ppm of the dry-based weight of the high-purity viscose fiber; the dry breaking strength is...

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Bibliographische Detailangaben
Hauptverfasser:	YE RONGMING, QU JUNRONG, LIU HAIYANG, YANG DINGGUO
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS BLEACHING LEATHER OR FURS CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS,YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR LAUNDERING MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OFARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES ORRIBBONS NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING TEXTILES TREATMENT OF TEXTILES OR THE LIKE
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Beschreibung
Zusammenfassung:	The invention discloses high-purity viscose fiber and a preparation method thereof. The high-purity viscose fiber is characterized in that the content of ash in the high-purity viscose fiber accounts for 10-200ppm of the dry-based weight of the high-purity viscose fiber; the dry breaking strength is more than or equal to 2.2cN/dtex, the dry breaking elongation is more than or equal to 15%, and the wet breaking elongation is more than or equal to 1.1cN/dtex. When the high-purity viscose fiber is prepared, the fiber is desulfurized and water-washed after being formed, is firstly pre-impregnated by hydrochloric acid, then is bleached, oiled, alcohol-washed, impregnated and washed by hydrochloric acid for multiple times, more than 99% of impurities, lignin and hemicellulose in the fiber are dissolved out by water washing for multiple times, and the cellulose can be safely melted for compound processing, so that the application field of the viscose fiber is expanded.