一步法仿TCS技术生产FOY

一步法仿ＴＣＳ技术生产ＦＯＹ宋子龙（江苏省常熟市合成纤维研究所，２１５５３５）高速纺按ＴＣＳ技术一步法生产涤纶全取向丝（ＦＯＹ）的工艺路线，是国内外的近几年才兴起的纺丝一拉伸技术。由于ＴＣＳ技术特制的热管的温控精度高且均匀一致，可以生产出染色均匀度好...     

浅析热管纺丝技术与产品性能

本文介绍了用ＨＧＳ、ＴＣＳ、ＦＳＹ的纺丝技术改造各类ＰＯＹ纺丝设备的工艺路线,并对其相应的纺丝技术、产品性能和技术经济效果等予以比较。随着ＦＳＹ热管装置和纺丝工艺技术的不断完善和发展,ＦＳＹ工艺技术生产线将成为ＰＯＹ改制能纺ＰＯＹ、ＨＯＹ、ＦＤＹ柔软纺丝生产工艺的较佳选择。     

高速纺一步法仿TCS拉伸特征研究

论述了ＴＣＳ温度梯度拉伸法制取ＦＯＹ纤维的力学性质。并讨论了纤维拉伸丝的形成和它的拉伸原理。对仿ＴＣＳ工艺技术有一定参考价值。     

阳离子可染改性涤纶FDY生产技术

通过对纺丝组件的独特设计和干燥、纺丝拉伸一步法工艺参数的合理有效调整，用国产阳离子可染改性涤纺切片（ＣＤＰ）在日本村田卷绕机生产出质量优良的ＦＤＹ。本文主要介绍ＣＤＰ ＦＤＹ这一差别化纤维的生产技术。     

丙纶FDY设备改造成丙纶BCF设备的经验介绍

本文介绍了对从意大利Ｆｉｌｔｅｗ公司引进的丙纶ＦＤＹ设备进行技术改造，生产丙纶ＢＣＦ的经验。即在原丙纶ＦＤＹ专用纺丝机的基础上，增设必要的变形，网络，塞鼓及相应的附属设备和控制系统，使之符合生产丙纶ＢＣＦ的要求，达到一机两用的效果。     

POY纺丝设备改造为纺程加热式纺丝卷绕一步法设备可行性研究

纺程加热法热制充分结晶ＰＥＴ纤维现有三种不同工艺：热板加热法（ＦＣＹ）；热管加热法（ＴＣＳ）；热板加热并加张力法（ＦＳＹ），均能基本达到纺丝卷统一步法（或称ＦＤＹ）的要求。介绍了各种纺程加热法的工艺流程及条件。由于加工工艺的不同，导致了产品性能和结构的差异，对此作了技术分析。分析了ＰＯＹ设备技术改造为纺程加热式一步法设备的可行性，并对改造费用和经济效益进行了预测。指出伴随着ＰＯＹ及其ＤＴＹ产品市场的低迷状况，这一技术改造具有十分可观的前景。     

涤纶重旦FDY纺丝工艺与设备

根据涤纶重旦ＦＤＹ（３３３ｄｔｅｘ）与常规ＦＤＹ初生丝的超分子结构的差异，借鉴常规涤纶ＦＤＹ生产技术，精心研制出一系列纺制涤纶重旦ＦＤＹ的生产工艺与设备。尤其是纺丝装置上的特殊设计，缓解了初生丝皮芯结构对纤维超分子结构和力学性能的影响，保证了生产的稳定、正常。     

TCS一步法涤纶超细FDY的生产工艺研究

研究了ＴＣＳ一步法涤纶超细ＦＤＹ的生产工艺。结果表明:提高切片干燥效果、纺丝温度、组件压力、上油率,减缓冷却条件,降低热管温度、纺丝速度,可获得质量优异的超细ＦＤＹ。     

涤纶TCS一步法工艺

本文介绍了在ＰＯＹ纺丝机上局部稍加改造，即可一步法生产涤纶ＦＤＹ丝，ＴＣＳ一步法，生产设备简单，工艺独特，尤其适应纺制ｄｐｆ在１．０以上下涤化ＦＤＹ细旦长丝。     

ZHV—2000 FDY涤纶民用丝油剂

讨论了热辊式ＦＤＹ涤纶民用丝生产时，油剂对产品质量和稳定运行的影响。ＦＤＹ油剂丝须具有较低的纤维对金属的摩擦、良好抗静电性以及适宜集束性，才能适应高速牵伸加工过程。     

环己胺反应器还原操作时的温度分布计算及改进方法

对于采用高压饱和水冷却的列管式反应器 ,运用一维数值计算的方法对催化剂升温还原时管壳间的温度分布进行了计算。结果表明 ,若用热氢气直接加热催化剂 ,在保证管壳间温差不超过 70℃的条件下 ,加热时间需要 2 50h以上。由此提出一种新的加热方法 ,可大幅度缩短加热时间 ,并对该方法进行了工业验证。     

多向纤维缠绕复合材料圆筒的研制

介绍多向纤维缠绕复合材料圆筒的结构特性及其生产设备,比较了加入轴向纤维前后的复合材料圆筒的性能。结果表明,加入轴向纤维后,多向纤维缠绕复合材料圆筒的轴向性能得到了很大的提高,能够满足工业生产中对高内压及轴向载荷下制品可靠性的要求。     

零触发调功控制在VK管加热控制中的应用

本文针对国内目前VK管采用的二位或调节温控方式进行了分析,指出其温控方面的不足之处,为了进一步提高产品质量把二位式调节温控方式改进为零触发调功控制。通过一年多的实践证明,改进后的VK管各段温度传热均匀,温控精度高,对提高VK管生产的产品质量起到了很大的作用。     

PP/PA6复合超细纤维的研制

以 PP和 PA6为原料 ,采用复合纺丝技术 ,制成单丝纤度 2～ 3 dtex的常规纤维 ,该纤维在后加工过程中可以剥离成单丝纤度小于 0 .5 dtex的复合超细纤维。介绍了复合纺丝工艺 ,讨论了对纤维物理性能指标产生较大影响的工艺参数 ,试验制得的复合超细纤维截面清晰 ,在常温常压下可染 ,织物服用舒适性良好。     

Studies on the melt spinning of nylon 6. II. Effect of heating the threadline upon orientation and crystallization

The effect of heating nylon 6 threadline in a spinning tube upon its orientation and crystallization behavior was studied by measuring the filament birefringence Δn_H at the outlet of the spinning tube, the conditioned filament birefringence Δn_∞ after take-up, the filament densities and crystallinities of the γ-form, and by calculating the relative crystallinity of the threadline. Results were as follows: When the filament mean temperature \documentclass{article}\pagestyle{empty}\begin{document}$\overline{\theta _s \left(x \right)}$\end{document} in the spinning tube was about 80°C, the birefringence Δn_H showed a peculiar behavior in that, at this temperature, the Δn_H value decreased due to partial melting of the semistable molecular structure of the threadline that had been formed before the inlet of the spinning tube. And, when the temperature was over about 80°C, the Δn_H value increased due to the setting in of crystallization. The relative crystallinity χ of the threadline was calculated using the kinetic theory of nonisothermal crystallization neglecting the entropy effect of molecular orientation. Assuming that the crystal growth was spherulitic rather than fibroid, the calculated χ values approximately agreed with the experimental results.     

Effect of microwave pretreatment on the dyeing behaviour of polyester fabric

Polyester fabric (filament by filament) was pretreated in a microwave oven in the presence of solvents and subsequently dyed with commercial disperse dyes [Dispersol Red C‐B (CI Disperse Red 91) and Dispersol Blue B‐G (CI Disperse Blue 26)] at different temperatures and for different durations of time. It was observed that the solvent interaction with the polyester could be enhanced by using microwave heating. Solvent molecules interact rapidly, not only with the surface of the fibre but also with the interior parts. Scanning electron microscope results showed that structural modifications take place, which produce surface roughness and voids. This enhances the dye uptake by threefold in comparison to conventional methods.     

Fabrication of tubular SiCf/SiC using different preform architectures by electrophoretic deposition and hot pressing

This paper reports the processing feasibility of electrophoretic deposition combined with hot pressing in the fabrication of dense tubular SiC_f/SiC composites using a cylindrical mold. A simulation of pressure distribution using ANSYS software was performed by varying the angular inclinations in a cylindrical mold with an ‘out → in’ configuration so as to ensure a maximum and uniform conversion of vertical hot press force to the lateral side of a centrally-located preform through graphite powder. The simulation revealed an inhomogeneous pressure distribution along the height of the preform, which could be minimized by mold optimization to achieve a more uniform tube density. To verify this, two different preform architectures such as 0/90° woven 2-D fabric rolled in a jelly state and filament winding with two plies having an inter-ply angle of 55° were hot-pressed using a mold fabricated based on the simulation after infiltrating the matrix phase by electrophoretic deposition. The density of the tube could be increased with more uniform microstructures. Although the tube using a filament winding preform exhibited a lower flexural strength (105 MPa) and relative density (90%) than those with the preform rolled in a jelly state (221 MPa, 95%), the results revealed a high degree of fiber pull-out due to the PyC coating on the SiC fiber.     

塑料管材用于干式地板供热、供冷的可行性研究

据塑料管材的力学性能，针对其应用于地板供热、供冷时应注意的问题，从塑料管材使用条件、管材的选择、管壁厚度的确定、地板结构、介质作用温度及供热、供冷运行方式等方面对塑料管材应用于供热、供冷的可行性进行了探讨，提出了一些相应措施和技术方案，并给出了实例。     

纤维缠绕复合材料锥管的挠曲变形计算方法

纤维缠绕的锥形管,由于各截面的纤维层厚在不断变化,弯曲变形计算比较困难。本文以传递矩阵法为基础,计算纤维缠绕锥管在弯曲载荷作用下的挠曲变形,并以实验结果验证了计算结果。本文提出的计算方法比较简便,适合工程应用。     

FDY高强聚酯长丝生产技术研究

较系统地研究了 PET 切片的固相缩聚工艺、高粘度切片的熔融纺丝以及拉伸卷绕工艺.研究结果表明:采用国内 TPA 法生产的 PET 大有光切片,选择合理的固相缩聚工艺,可满足高强聚酯长丝的生产需要;在切片固相缩聚过程中,对粘度增长贡献的大小依次为:真空度>温度>时间;无油丝粘度在0.92dL/g 左右,聚酯纤维可获得优良的物理机械性能和良好的热稳定性.