Modification method of meta-position aromatic polyamide spinning solution

• Main Authors: LIU PENGQING, XU JIANJUN, LIANG JINGSONG, YE GUANGDOU, YANG YOU, LIU QIANLI, YOU YAN, CAO KAIKAI, JIANG MENGJIN
• Format: Patent
• Language: Chinese; English
• Published: 26.06.2020
• Subjects: APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS; CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS; NATURAL OR ARTIFICIAL THREADS OR FIBRES; SPINNING; TEXTILES

The invention discloses a modification method of a meta-position aromatic polyamide spinning solution and relates to the technical field of dry-wet spinning. M-phthaloyl chloride and m-phenylenediamine are subjected to one-step low-temperature condensation, and alkali metal, alkaline earth metal oxide or hydroxide is used for neutralization to prepare the meta-position aramid spinning solution; trace polyethylene glycol is used as a spinning solution modifier and added into the meta-position aramid solution for modification, the operation is simple and convenient, the price is low, the spinning solution with low surface tension and high viscosity is obtained, and good dry-wet spinnability is ensured, so that high-performance meta-position aramid filaments are prepared. 本发明公开了一种间位芳香族聚酰胺纺丝原液的改性方法，涉及干湿法纺丝技术领域，将间苯二甲酰氯与间苯二胺通过一步低温缩合，并用碱金属或碱土金属氧化物或氢氧化物中和制备间位芳纶纺丝原液；通过将微量聚乙二醇作为纺丝原液改性剂加入间位芳纶溶液中进行改性，操作简单方便且价格低廉，获得表面张力较低、粘度较大的纺丝原液，保证良好的干湿法可纺性从而制备出高性能间位芳纶长丝。