NOY公司涤(锦)纶两用细旦纺丝设备及其生产工艺探讨

介绍意大利 NOY工程公司配置的涤 (锦 )纶两用细旦纺丝机的设备特征及工艺特点 ,着重指出了该设备在切片干燥、输送和纺丝系统上与常规设备的差异 ,并结合生产实例对涤 (锦 )纶细旦纺丝在切片干燥、纺丝温度、纺丝速度和侧吹风条件等工艺上的要求作了探讨。     

涤/锦复合丝质量影响因素的探讨

从涤/锦复合纺丝设备和工艺两大方面对影响涤/锦复合丝质量的因素进行了分析和探讨,明确了组件加工精度和涤、锦两种熔体黏度接近是纺好涤锦复合丝的关键。     

复合纺丝法纺制超细旦纤维的工艺研究

用复合纺丝法纺制了涤锦复合超细纤维,在常规及高速纺丝条件下,研究了冷却条件、集束点位置、纺丝速度、涤锦复合比、拉伸条件等对纤维的力学性质、热收缩性、取向和结晶等的影响,得出在上述条件下的影响规律.文中还对纤维的剥离性能及其对纤维的纺织加工性进行研究,为利用剥离法制取涤锦复合超细纤维提供依据.     

涤/锦复合剥离型POY生产工艺探讨

本文介绍了涤/锦复合POY长丝的生产工艺流程,同时论述了在生产过程中对产品性能及质量指标产生较大影响的工艺参数,特别对切片干燥,纺丝温度及冷却条件等工艺参数进行了详细讨论。     

PET／PA6剥离型超细复合纤维研制与生产

论述了利用国产设备研制与生产ＰＥＴ／ＰＡ６超细复合纤维工艺流程特点。选择、优化了干燥、纺丝、卷绕、牵伸等工序的工艺参数。提出严格控制双组分复合纺丝温度等工艺参数是保证涤锦复合超细纤维截面形状均匀，各项经济技术质量指标优良的关键。     

米字型裂片涤锦复合丝的POY纺丝对DTY成品丝染色影响因素的探讨

米字型裂片涤锦复合丝经过POY,DTY加工去开纤,常常会遇到一些染色问题,例如条纹,深浅色等,在此从POY纺丝的工艺和设备等不同方面对DTY成品丝的染色影响因素加以分析。     

PA6／PET切片熔融共混纺丝工艺介绍

在锦纶6（PA6）切片中加入一定数量聚酯（PET）切片进行熔融共混纺丝,主要过程包括配料、熔融、纺丝、侧吹风冷却、上油、拉伸、卷绕成型,获得锦涤FDY工业丝。经测试锦涤工业丝的断裂强度为8．0—8．5cN／dtex,断裂伸长为15％～17％。     

高强高模锦/涤皮芯复合长丝工艺的探索

用高粘度聚酯切片和高分子量聚酰胺切片在自制的(?)20mm双螺杆复合纺丝机上纺制了锦/涤皮芯复合轮胎帘线.探讨了纺丝温度、拉伸温度与倍数,并与高强涤纶及高强锦纶的纺丝工艺进行了比较.     

熔体直纺涤锦复合超细纤维产品研发

探讨聚酯熔体直纺涤锦米字型复合POY超细纤维工艺技术,研究表明:在纺制涤锦复合POY超细纤维规格为290 dtex/72 f时,涤锦2组份质量比PET:PA6为82:18,PET熔体温度为285～290℃,PA6纺丝温度为(270～274)℃,纺丝速度(3000～3300)m/min,冷却风温为(20～22)℃,冷却风...     

米字型涤锦复合丝生产设备、工艺探讨

以北京中丽设备纺丝实例,来分析米字型涤锦复合丝POY,DTY工艺设备以及影响因素。     

Influence of ionomeric compatibilizers on the morphology and properties of amorphous polyester/polyamide blends

The utilization of sulfonated polyester ionomers as minor‐component compatibilizers in blends of an amorphous polyester and polyamide was investigated. The blends were prepared using twin‐screw extrusion and compared to solution blends to investigate the effect of elevated temperatures and shear mixing on blend miscibility and/or phase behavior. The phase domain sizes of the solution blends with respect to ionomer content were studied using small angle light scattering (SALS) and phase contrast optical microscopy. The thermal and mechanical properties of the extruded blends were investigated using dynamic mechanical analysis (DMA) and tensile testing while the morphology was investigated using environmental scanning electron microscopy (ESEM). The interactions between the sulfonate group of the ionomer and the polyamide were characterized using FT‐IR spectroscopy. Binary blends of the amorphous polyester and polyamide were immiscible with poor mechanical properties, while blends containing the polyester ionomer as a minor‐component compatibilizer showed a significant reduction in the dispersed domain sizes and enhanced ultimate mechanical properties. The compatibilization mechanism is attributed to specific interactions between the sulfonate groups on the polyester ionomer and the amide groups of the polyamide. Polym. Eng. Sci. 44:1721–1731, 2004. © 2004 Society of Plastics Engineers.     

液晶聚合物/聚酰胺复合体系的研究进展

综述了液晶聚合物与聚酰胺（PA）复合体系的研究进展,评述了溶致液晶聚酰胺/PA复合体系、热致液晶聚酯/PA复合体系、热致液晶聚酰胺/PA复合体系的各自特点以及影响液晶聚合物与树脂基体间相容性的因素,重点论述了改善热致液晶聚合物/PA组分间相容性的方法及其对材料最终力学性能的影响,指出利用分子间氢键提高热致液晶聚合物/PA相容性的优势,热致液晶聚酰胺增强PA树脂基体将有望成为PA增强改性的新方法。     

Improving the dyeability of synthetic fabrics with basic dyes using in situ plasma polymerisation of acrylic acid

The in situ polymerisation of acrylic acid using low temperature plasma treatment was carried out on polyester, polyamide and polypropylene fabrics with the aim of improving their dyeability with basic dyes. The overall colour strength obtained was significantly increased as a result of this treatment. However, while the wash fastness was acceptable on polyamide, it was unsatisfactory on polyester and polypropylene fabrics, probably due to lack of penetration of these fibres by the acrylic acid monomer. Scanning electron microscopy and Fourier transform infrared spectroscopy confirmed that grafting of polyacrylic acid had taken place only on the surface of the polyester and polypropylene fibres, but in the case of polyamide the interior of the fibre was also modified.     

Study of Sorption of Viscose—Polyamide and Viscose—Polyester Composite Fibres

The use of composite viscose—polyamide and viscose—polyester fibres significantly improves the comfort properties of fabrics and knits. The sorption power of the composite fibres is higher the higher the viscose component content is, since polyester and polyamide fibres are almost nonhygroscopic. Increasing the relative humidity from 66 to 98% increases the moisture content of these fibres by 2-3 times.     

Photo-induced polymerization of methyl acrylate vapors on prewetted polyamide and polyester fibers

Photo-induced polymerization of methyl acrylate vapors on polyamide and polyester fibers occurred when these fibers were wetted with the polar solvents methanol, N,N-dimethylformamide, or dimethyl sulfoxide (neat or in aqueous solution). Polymer grafting was accompanied by homopolymer formation, with the amount of grafting and ratio of grafting to homopolymerization being dependent on the fiber type, the solvent used to wet the fiber, and the amount of water present in the wetting solution. Overall deposition of polymer was higher on polyamide than on polyester under all wetting conditions. Water present in the wetting agent had a limited effect on polymerization of poly(methyl acrylate) on polyamide, whereas water caused a rapid decrease in polymerization on polyester. The nature of polymer grafting on the fibers under various wetting conditions was examined by scanning electron microscopy and tensile property measurements, and the mode of polymer deposition was outlined in light of our findings.     

新型聚酯PTT纤维的现状与发展

介绍了聚对苯二甲酸丙二醇酯 (PTT)的合成、纺丝及性能 ,并对PTT纤维的开发动态和经济分析进行了阐述     

聚酰胺/聚酯皮芯复合纤维的研究开发

聚酯纤维具有模量高、价格低廉的优点,但是存在静电和不易着色;而聚酰胺纤维具有较好的染色性、吸湿性等优点,但是模量较低且成本较高。为充分利用聚酰胺和聚酯的优点而克服因两者相容性差导致的成形问题,从原料黏弹性、挤出成形温度、热拉伸等多个方面入手,探讨提高聚酰胺/聚酯皮芯复合纺丝稳定性的技术方案。流变和纺丝试验结果表明:缩小熔体温度差,使聚酯和聚酰胺熔体黏度相近时,可制备结构稳定、性能较好的皮芯复合纤维;在拉伸温度偏向聚酯组分的拉伸温度时,聚酰胺/聚酯皮芯复合纤维的皮层和芯层组分更易做到同步拉伸;所制备的复合纤维平衡回潮率>2%,并且可以采用常规酸性染料染色,避免了常规聚酯纤维高温高压染色且因染色过程中碱减量造成的环境污染。     

液晶聚酯纤维的性能与结构

本文论述了液晶共聚酯纤维的力学性能与分子量、纺丝加工参数及热处理条件的关系,并揭示出纤维结构特征.指出液晶共聚酯纤维具有比全芳族聚酰胺纤维高的综合性能.