Preparation method of recycled polyester staple fiber

The invention discloses a preparation method of recycled polyester staple fiber. Polyester/polyurethane blended fabric waste is taken as a raw material, a styrene-maleic anhydride copolymer is added to waste blended fabric, pre-melt granulation is performed at the temperature ranging from 190 DEG C...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	SHEN QINZHEN, WANG CHAOSHENG, PU DANGFENG, WANG HUAPING, DAI MENGXI, FENG XIAOLIN, ZOU YUEQING, WANG SHAOBO, DAI ZEXIN
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OFARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES ORRIBBONS NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING TEXTILES
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Beschreibung
Zusammenfassung:	The invention discloses a preparation method of recycled polyester staple fiber. Polyester/polyurethane blended fabric waste is taken as a raw material, a styrene-maleic anhydride copolymer is added to waste blended fabric, pre-melt granulation is performed at the temperature ranging from 190 DEG C to 220 DEG C, and then melt blending and melt spinning are directly performed. Severe thermal degradation of the waste polyester/polyurethane blended fabric is effectively inhibited in the melt blending process, a blend melt with a moderate cross-linked structure and reasonable phase distribution can be obtained, and accordingly, the recycled polyester staple fiber with more excellent mechanical performance can be obtained. The whole recycle process has the remarkable advantages that the process is simple, the procedure is short, the cost is low, and the efficiency is high.