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涤纶长丝多头纺丝技术的开发 总被引:1,自引:1,他引:0
介绍了2000年以来我国涤纶长丝、PET树脂的生产能力及产量;叙述了大连合成纤维研究所股份有限公司对多头纺丝技术的开发;重点分析了纺丝设备的侧吹风,纺丝组件以及在卷绕设备上卷绕包角上的改进。 相似文献
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采用一步法高速纺丝,在相邻纺丝位生产涤纶高收缩预取向丝(POY)和低收缩全拉伸丝(FDY),再合股加弹变形,生产涤纶双收缩混纤复合丝(BSY),探讨了纺丝工艺对BSY结构及性能的影响。结果表明:高收缩POY的纺丝速度、低收缩FDY的拉伸倍数、热辊温度是影响BSY的结构及性能的主要因素;当热辊GR1,GR2的速度分别为820,2 950 m/min,温度分别为85,110℃,纺丝速度为3 000 m/min时,得到的BSY结晶度为36.60%,声速取向因子达0.723,沸水收缩率达40.80%,其他力学性能也较为优异,断裂强度为1.909 cN/dtex,断裂伸长率为38.17%。 相似文献
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用DIO组件纺涤纶长丝的研发 总被引:1,自引:0,他引:1
利用熔体直接纺一头两尾单产大容量柔性化大型聚合设备的工艺路线,纺丝上利用巴马格DIO组件,先进的EVO环吹纺丝设备和WINGS40T-1500/10型卷绕设备,成功研制了134 dtex/144 f涤纶半光POY产品。研制结果表明,较低的熔体管道输送温度284~286℃、纺丝温度291~293℃,选用最佳的无风区高度、风箱上加装陶瓷耐热环和高密封耐热垫,风筒间加装隔板,集束点在650~750 mm处,导丝盘前使用分散式网络喷嘴,合适控制预网络压力,卷绕张力等工艺条件,生产比较适合加工的细旦产品。该产品内在品质稳定,后加工张力稳定,布料具有独特的柔性风格。 相似文献
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分析了纺丝时毛丝产生的原因。提出了控制熔体温度、缩短熔体输送停留时间,以减少熔体降解;不定期检查和定期更换环吹筒,以保证丝束冷却;加强丝道各部件的维护和保养,以减少对丝束的摩擦;加大组件配件及组装的管理,以防止组件压力非正常上升和漏浆等控制毛丝产生的措施。 相似文献
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为了提高10D系列超细旦涤纶长丝的物理性能,开发了新型环吹风技术、新型环吹滤芯全锭位清洗及检测技术和新型锭轴支撑套加热技术,同时在生产过程中对纺丝温度、冷却条件、上油工艺、拉伸条件等工艺参数进行了优化,得到最佳工艺条件,制备了品质优良的产品。 相似文献
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介绍了高性能的变频调速系统在涤纶两部位高速纺丝机上的应用 ,详细阐明了系统组成及其工作特点。 相似文献
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高速纺涤纶中空长丝的研制 总被引:2,自引:0,他引:2
通过对特殊喷丝板的设计和纺丝工艺的探讨 ,研究了影响高速纺涤纶中空长丝成形的主要因素 ,讨论了喷丝板的设计原则。结果表明 :纺丝速度为 2 .8~ 3.2 km/m in,纺制 POY中空纤维 ,卷绕正常 ,可满足后加工的要求 ;纺丝速度增加 ,中空度降低 ,熔体温度控制在 30 0~ 30 2℃ ;中空喷丝板设计时 ,微孔圆环形狭缝宽度小于 0 .15 mm ,表观拉伸比不能太大 ;POY中空度一般为 15 %~ 2 8% ,F DY的中空度可达 5 0 %。 相似文献
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Sepide Heydari Mohammad Ali Tavanaie Majid Montazer Mahnaz Mahmoudi-Rad 《应用聚合物科学杂志》2024,141(4):e54861
In this research the CuO nanoparticles were synthesized with four different methods then used to produce polyethylene terephthalate (PET) fibers with antibacterial, antifungal, and photocatalytic properties during the melt spinning process. Nanoparticles were synthesized in different ways using copper acetate salt (Cu(CH3COO)2) and sodium hydroxide (NaOH). The synthesis of copper oxide (CuO) nanoparticles was confirmed by field-emission scanning electron microscopy (FE-SEM images), EDX patterns, TGA, FTIR, X-ray diffraction pattern XRD, and UV-vis absorption spectrum. The results showed that synthesized nanoparticles exhibited strong antibacterial activity against gram-positive and gram-negative bacteria. Finally, after examining the fibers with different percentages of nanoparticles), fibers containing 1% of nanoparticles were produced using a 20% nanocopper oxide masterbatch as the optimal sample. The presence of nanoparticles in the fiber structure was confirmed by FE-SEM images, EDX, XRD, and FTIR analysis. Furthermore, the tensile properties, thermal behavior, and photocatalytic properties of the fibers were investigated. Evaluation of the antibacterial and antifungal activity of the produced fibers against gram-positive bacteria Staphylococcus aureus and Candida albicans fungus showed about 90% death of bacteria and fungi. 相似文献
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聚酯二甘醇波动对直纺长丝的影响 总被引:2,自引:1,他引:1
对聚酯二甘醇含量波动对直纺长丝生产及产品质量的影响进行了分析讨论。初步认为就FDY而言,当聚酯 二甘醇波动范围控制在0.14%左右时,绝大部份直纺FDY产品的染色性能不受影响;当聚酯二甘醇波动范围控制在0. 25%左右时,直纺FDY常规品种的染色性能不受影响,但差别化品种(如多孔细旦的FDY 88 dtex71 f等品种)会存在色差。 相似文献
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PET高速纺丝方法及超高速纺丝纤维成形机理 总被引:1,自引:0,他引:1
综述了 PET高速纺丝热辊法生产工艺 (MG)、冷辊拉伸蒸汽定型法生产工艺 (H 4S)、热管法生产工艺 (TCS)、热管拉伸法生产工艺 (HCS)以及超高速纺丝工艺 (SHSS) ;阐明了超高速纺在纺程上结构的发展与成形机理 ,以及超高速纺纺程上的细颈现象 ,超高速纺的成形机理与高速纺是不同的 ,明显区别在于细颈点的出现 相似文献
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采用在线张力仪、光学显微镜、声速仪、紫外光谱、比表面积测定仪等手段研究了干湿法聚丙烯腈(PAN)纤维制备过程中纺丝速度对纤维形貌和结构的影响。结果表明随纺丝速度的提高凝固丝条上的张力线性增大,初生纤维的全取向程度也随之增大;凝固效果没有受到速度变化的影响,没有大的孔洞缺陷生成,纤维的力学性能没有受到影响。 相似文献
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High‐density polyethylene (HDPE) fibers, obtained from a melt‐flow rate (g/10 min) of 11 and 28, was produced by a high‐speed melt‐spinning method in the range of take‐up velocity from 1 to 8 km/min and from 1 to 6 km/min, respectively. The change of fiber structure and physical properties with increasing take‐up velocity was investigated through birefringence, wide‐angle X‐ray diffraction (WAXD), differential scanning calorimetry (DSC), a Rheovibron, and a Fafegraph‐M. With an increase in take‐up velocity, the birefringence showed a sigmoidal increase, which has distinct changes in the range of 1–5 km/min. Throughout the whole take‐up velocities, the birefringence of HDPE(11) was higher than that of HDPE(28). With increasing take‐up velocity, the crystalline orientation was transformed from a‐axis orientation to c‐axis orientation. These crystalline relaxations are confirmed by the tan δ peak of high‐speed spun HDPE fibers. The intensity of the crystalline relaxation peak decreases with increasing take‐up velocity in both HDPE(11) and HDPE(28). As above, the crystalline relaxation peaks shift to lower temperature with increasing take‐up velocity. With increasing take‐up velocity, the ultimate strain decreases while both specific stress and the initial modulus increase. The mechanical behavior may be closely related to, as investigated by birefringence, orientation of the amorphous region, etc., the take‐up velocity. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 77: 1182–1195, 2000 相似文献
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介绍80位涤纶纺丝机的变频调速系统,采用PC机和PLC控制变频器,1台变频器单独驱动1台计量泵电机,16用1备的切换方式,此系统线路简单明析,操作维修方便,控制平稳可靠。并对该系统的常见故障进行了处理。 相似文献