METHOD OF DRY-SPINNING PARA-ARAMID FIBER
    3.
    发明授权
    METHOD OF DRY-SPINNING PARA-ARAMID FIBER 有权
    干纺丝PARA- ARAMID纤维的方法

    公开(公告)号:EP2938764B1

    公开(公告)日:2017-09-13

    申请号:EP13867797.6

    申请日:2013-12-19

    摘要: The present invention provides a method for manufacturing para-aramid fibers, which includes: spinning a polymeric solution containing aramid polymer in an organic solvent through a spinneret into an inert gas to partially remove the organic solvent contained in the spun fiber; contacting the spun fiber with conditioning solution, so as to maintain residual water in fiber in a range of 10 to 15%; and subjecting the treated fiber to drawing, washing and heating in a dry-spinning manner. The present invention may greatly reduce energy consumption and costs for recovery of the solvent, as compared to a conventional manufacturing method of aramid fiber in a wet-spinning manner. Further, the present invention may solve conventional problems such as corrosion of apparatus, deterioration of working environments, or the like, since a concentrated sulfuric acid solvent is not used in a spinning process. Still further, the present invention may conduct drawing and heating after maintaining the residual water in fiber in a range of 10 to 15% before drawing, thereby remarkably improving the strength and elastic modulus of the fiber.

    摘要翻译: 本发明提供一种制造对位芳族聚酰胺纤维的方法,其包括:将含有芳族聚酰胺聚合物的聚合物溶液在有机溶剂中通过喷丝头纺成惰性气体,以部分除去纺丝纤维中所含的有机溶剂; 使纺丝纤维与调节溶液接触,以将纤维中的残留水保持在10至15%的范围内; 并对处理过的纤维进行拉伸,洗涤并以干纺方式加热。 与以湿法纺丝方式的芳族聚酰胺纤维的常规制造方法相比,本发明可以大大降低能量消耗和回收溶剂的成本。 此外,由于在纺丝过程中不使用浓硫酸溶剂,因此本发明可以解决诸如设备腐蚀,工作环境恶化等常规问题。 此外,本发明可以在拉伸之前将纤维中的残留水保持在10至15%的范围内之后进行拉伸和加热,由此显着改善纤维的强度和弹性模量。

    METHOD OF DRY-SPINNING PARA-ARAMID FIBER
    4.
    发明公开
    METHOD OF DRY-SPINNING PARA-ARAMID FIBER 有权
    方法对于干纺PARAARAMIDFASER

    公开(公告)号:EP2938764A1

    公开(公告)日:2015-11-04

    申请号:EP13867797.6

    申请日:2013-12-19

    IPC分类号: D01D5/04 D01D10/00 D01F6/60

    摘要: The present invention provides a method for manufacturing para-aramid fibers, which includes: spinning a polymeric solution containing aramid polymer in an organic solvent through a spinneret into an inert gas to partially remove the organic solvent contained in the spun fiber; contacting the spun fiber with conditioning solution, so as to maintain residual water in fiber in a range of 10 to 15%; and subjecting the treated fiber to drawing, washing and heating in a dry-spinning manner. The present invention may greatly reduce energy consumption and costs for recovery of the solvent, as compared to a conventional manufacturing method of aramid fiber in a wet-spinning manner. Further, the present invention may solve conventional problems such as corrosion of apparatus, deterioration of working environments, or the like, since a concentrated sulfuric acid solvent is not used in a spinning process. Still further, the present invention may conduct drawing and heating after maintaining the residual water in fiber in a range of 10 to 15% before drawing, thereby remarkably improving the strength and elastic modulus of the fiber.

    PARA-ARAMID FIBER AND METHOD OF PREPARING THE SAME
    5.
    发明授权
    PARA-ARAMID FIBER AND METHOD OF PREPARING THE SAME 有权
    对位芳纶纤维及其制造方法

    公开(公告)号:EP2260131B1

    公开(公告)日:2012-08-08

    申请号:EP09754911.7

    申请日:2009-03-31

    摘要: An aramid fiber and a method of producing the same is disclosed, which is capable of realizing high surface uniformity and improved tensile strength and elongation property, wherein the method comprises preparing an aromatic polyamide by polymerizing aromatic diamine with aromatic diacid halide; preparing a spinning dope by dissolving the aromatic polyamide in a solvent; and extruding the spinning dope through a spinneret, and sequentially passing the spinning dope through an air gap, a coagulation bath filled with a coagulation solution, and a co¬ agulation tube having a jet opening, connected with the bottom of the coagulation bath, to obtain a filament wherein a distance from the upper surface of the coagulation solution contained in the coagulation bath to the jet opening of the coagulation tube is within a range between 10 and 35mm.

    PARA-ARAMID FIBER AND METHOD OF PREPARING THE SAME
    6.
    发明公开
    PARA-ARAMID FIBER AND METHOD OF PREPARING THE SAME 有权
    对位芳纶纤维及其制造方法

    公开(公告)号:EP2260131A1

    公开(公告)日:2010-12-15

    申请号:EP09754911.7

    申请日:2009-03-31

    IPC分类号: D01F6/60 D03D15/00

    摘要: An aramid fiber and a method of producing the same is disclosed, which is capable of realizing high surface uniformity and improved tensile strength and elongation property, wherein the method comprises preparing an aromatic polyamide by polymerizing aromatic diamine with aromatic diacid halide; preparing a spinning dope by dissolving the aromatic polyamide in a solvent; and extruding the spinning dope through a spinneret, and sequentially passing the spinning dope through an air gap, a coagulation bath filled with a coagulation solution, and a co¬ agulation tube having a jet opening, connected with the bottom of the coagulation bath, to obtain a filament wherein a distance from the upper surface of the coagulation solution contained in the coagulation bath to the jet opening of the coagulation tube is within a range between 10 and 35mm.