Preparation method of PBO nanofiber membrane

The invention belongs to the field of new materials, and particularly relates to a preparation method of a PBO nanofiber membrane, which specifically comprises the following steps: (1) preparing a precursor 4, 6-diisopropoxy-polyhydroxyamide (ipr-PHA) solution; (2) pouring the ipr-PHA solution into...

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Hauptverfasser:	GUO CHENG, ZHONG YUHUA, LIU WEI, LIU ZONGFA, MENG ZHAORUI, ZHANG DIANBO, CHEN XIANGDONG, XIAO ZUOXU, LIU QUN, PENG XIANYU, DAI YONG, BAI JINWANG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BRAIDING COTTON-WOOL FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS,NON-WOVEN FABRICS KNITTING LACE-MAKING MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARYMATERIAL NON-WOVEN FABRICS TEXTILES TRIMMINGS WADDING
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Beschreibung
Zusammenfassung:	The invention belongs to the field of new materials, and particularly relates to a preparation method of a PBO nanofiber membrane, which specifically comprises the following steps: (1) preparing a precursor 4, 6-diisopropoxy-polyhydroxyamide (ipr-PHA) solution; (2) pouring the ipr-PHA solution into deionized water, and performing precipitation, suction filtration and washing to obtain an ipr-PHA polymer; (3) re-dissolving the ipr-PHA polymer in a solvent, and carrying out electrostatic spinning to obtain an ipr-PHA nanofiber membrane; and (4) performing high-temperature heat treatment on the ipr-PHA nanofiber membrane to obtain the PBO nanofiber membrane. According to the method, the dissolving capacity of the PHA in the organic solvent is remarkably improved, the spinnability of the PHA solution is improved, the thermal stability of the ipr-PHA is better, the conversion rate from the PHA to the PBO is improved, and the comprehensive performance of the prepared PBO nanofiber membrane is better. 本发明属于新材料领域，特别涉