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1.发明申请公开(公告)号：US20130183525A1
公开(公告)日：2013-07-18
申请号：US13428939
申请日：2012-03-23
申请人： Dezhen Wu , Enlin Han , Lun Li , Hongqing Niu , Gongping Shang , Shengli Qi , Xiaodong Wang
发明人： Dezhen Wu , Enlin Han , Lun Li , Hongqing Niu , Gongping Shang , Shengli Qi , Xiaodong Wang
摘要： The present disclosure provides polyimide fibers with kidney-shaped cross-section and their preparation methods thereof, falling within the technical field of polyimide fiber. Polyimide fibers with kidney-shaped cross-sections are prepared by a continuous, integrated approach, starting from a polyamic acid solution prepared by reacting an aromatic dianhydride with an aromatic diamine. PAA nascent fibers with kidney-shaped cross-sections are obtained by adopting a spinneret having circular orifices under wet spinning process. The kidney-shaped cross-sections are obtained by varying the processing condition, including spinning speed, coagulation bath composition, coagulation temperature, and depth of coagulation bath. After washing and drying, polyamic acid nascent fibers are converted to polyimide fibers with kidney-shaped cross-sections under thermal curing. The integrated preparation methods are suitable for mass industrial production.
摘要翻译： 本发明提供具有肾形横截面的聚酰亚胺纤维及其制备方法，属于聚酰亚胺纤维的技术领域。 具有肾形截面的聚酰亚胺纤维通过连续的一体化方法由从芳族二酐与芳族二胺反应制备的聚酰胺酸溶液开始制备。 通过在湿法纺丝工艺中采用具有圆形孔的喷丝板，获得具有肾形截面的PAA新生纤维。 通过改变加工条件，包括纺丝速度，凝固浴组成，凝固温度和凝固浴的深度，可以获得肾形横截面。 洗涤和干燥后，聚酰胺酸新生纤维在热固化下转变为具有肾形横截面的聚酰亚胺纤维。 综合制备方法适合大批量工业生产。
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2.发明授权公开(公告)号：US08911649B2
公开(公告)日：2014-12-16
申请号：US13428939
申请日：2012-03-23
申请人： Dezhen Wu , Enlin Han , Lun Li , Hongqing Niu , Gongping Shang , Shengli Qi , Xiaodong Wang
发明人： Dezhen Wu , Enlin Han , Lun Li , Hongqing Niu , Gongping Shang , Shengli Qi , Xiaodong Wang
摘要： The present disclosure provides polyimide fibers with kidney-shaped cross-section and their preparation methods thereof, falling within the technical field of polyimide fiber. Polyimide fibers with kidney-shaped cross-sections are prepared by a continuous, integrated approach, starting from a polyamic acid solution prepared by reacting an aromatic dianhydride with an aromatic diamine. PAA nascent fibers with kidney-shaped cross-sections are obtained by adopting a spinneret having circular orifices under wet spinning process. The kidney-shaped cross-sections are obtained by varying the processing condition, including spinning speed, coagulation bath composition, coagulation temperature, and depth of coagulation bath. After washing and drying, polyamic acid nascent fibers are converted to polyimide fibers with kidney-shaped cross-sections under thermal curing. The integrated preparation methods are suitable for mass industrial production.
摘要翻译： 本发明提供具有肾形横截面的聚酰亚胺纤维及其制备方法，属于聚酰亚胺纤维的技术领域。 具有肾形截面的聚酰亚胺纤维通过连续的一体化方法由从芳族二酐与芳族二胺反应制备的聚酰胺酸溶液开始制备。 通过在湿法纺丝工艺中采用具有圆形孔的喷丝板，获得具有肾形截面的PAA新生纤维。 通过改变加工条件，包括纺丝速度，凝固浴组成，凝固温度和凝固浴的深度，可以获得肾形横截面。 洗涤和干燥后，聚酰胺酸新生纤维在热固化下转变为具有肾形横截面的聚酰亚胺纤维。 综合制备方法适合大批量工业生产。
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