涤纶微细纤维筒子纱染色性能的探讨

主要通过比较涤纶微细纤维膨松线与普通涤纶短纤维线性能的差异。进而研究涤纶微细纤维物理结构对染色的影响以及涤纶微细纤维的染色工艺，并介绍了涤纶微细纤维染色中的注意事项和合适的染色工艺。     

涤纶筒子纱染色质量的控制

介绍了涤纶筒子纱染色的工艺,分析了染色过程中对染色质量产生影响的因素及相应采取的措施,介绍了近几年在涤纶筒子纱染色上为减少色差所采用的新技术。     

解决层差是筒子纱染整的关键

本文简述了影响筒子纱层差的因素，重点论述松简与柔软整理对层差的影响。     

高支纯棉筒子纱染色工艺研究

为了提高纱线染色质量,生产出符合客户要求的200sC/2纯棉纱线,本文结合了生产实践,针对高支纯棉纱线的特点,确定了纯棉筒子纱线染整加工工艺,包括松筒、前处理、染色和柔软处理等,给出了各工序的工艺处方、条件、流程和注意事项。结果表明,染色纱线的强度损伤小,其染色后耐洗牢度、汗渍牢度均较好,湿摩擦牢度能达到4~5级。     

压力式烘干机在筒子纱烘干中的应用

对压力式烘干机的结构、原理、节能、节省劳动力以及便于自动化的特点进行了介绍。着重对压力式烘干机的烘干工艺和能耗水平进行研究,并对全涤纶、全棉以及全羊毛筒子纱进行了烘干试验,通过试验可以发现,压力式烘干机对筒子纱的烘干效果优异,相对于其他两种传统的烘干方式,压力式烘干机在能耗方面具有较大的优势。     

压力式烘干机在筒子纱烘干中的应用

对压力式烘干机的结构、原理、节能、节省劳动力以及便于自动化的特点进行了介绍。着重对压力式烘干机的烘干工艺和能耗水平进行研究,并对全涤纶、全棉以及全羊毛筒子纱进行了烘干试验,通过试验可以发现,压力式烘干机对筒子纱的烘干效果优异,相对于其他两种传统的烘干方式,压力式烘干机在能耗方面具有较大的优势。     

全棉筒子纱氧漂工艺的生产实践

为提高漂白全棉筒子纱的白度、强力、毛效等指标,在生产中探讨了水质、过氧化氢用量、漂液pH值、氧漂温度、氧漂时间对筒子纱性能的影响,得出了全棉筒子纱的最佳氧漂工艺。其中27%双氧水浓度12～13 g/L,pH值10.5～11.5之间,氧漂温度与时间控制98±2℃,55分钟。在此工艺下,全棉筒子纱的白度、强力、毛效获得最佳协同效果,可满足客户要求。     

毛／涤纱分散／酸性（媒染）染料一浴法筒子染色工艺

毛／涤纱分散／酸性(媒染)染料一浴法筒子染色工艺，在100℃条件下能满足毛、涤两种纤维同时上染，染色产品具有着色深浓鲜艳，色泽一致，各项牢度符合要求，对纤维无损伤等优点，从而缩短生产时间，降低成本，提高经济效益。     

可缓存筒子纱包装整列系统的设计与实现

根据全自动筒子纱编织袋包装生产线的生产工艺要求,设计了一种新型的筒子纱整列系统,实现了筒子纱的快速整列装袋功能。相较于传统的整列系统,添加了缓存功能,提高了筒子纱包装的效率。利用西门子的TIA Portal软件进行编程,使用顺序功能图对整列系统的控制程序进行分析与开发。设计出的新型整列系统可以满足整条生产线的效率要求,节省了成本,具有良好的应用前景。     

聚酰胺地毯纱在染色过程中色差的形成与控制

简要介绍了聚酰胺（BCF）地毯纱的优点及染色工艺,分析了影响染色均匀性的因素。指出选择合理的染料,严格调配过程,遵照合理的热定型工艺,即可以提高聚酰胺地毯纱的匀染性,避免出现色差,提高产品的质量。     

涤纶纱线和织物的色差影响因素和控制措施探讨

探讨了涤纶纤维染色机理和色差评价方法,初步分析了涤纶纱线、织物在聚酯合成、纺丝以及纺织染整过程中存在的色差影响因素,并提出了控制色差的有效措施。     

有色BCF色差形成的原因剖析

介绍了膨体变形丝(BCF)的有色切片纺丝、色母粒着色纺丝、熔体着色纺丝和本色切片纺丝后染色的着色方法;从原料、设备和工艺等方面剖析了有色BCF产生色差的原因,提出了预防措施;指出提高色母粒质量,采用高精度色母粒计量添加装置,选择适宜的工艺条件可降低有色BCF的色差。     

涤纶POY底层丝后加工染色色差原因分析

对涤纶POY底层丝进行分析,找出了底层丝后加工染色存在色差的原因,并提出一些解决底层丝染色的方法。     

涤纶DTY结晶行为对其染色性能的影响

以83 dtex/36 f涤纶假捻变形丝(DTY)为例,借助X射线衍射法和差示扫描量热法分析了同一机台不同时间生产的涤纶DTY试样的结晶行为,探讨了涤纶DTY染色不匀的原因。结果表明:DTY试样的结晶速度存在差异是其染色不匀的主要原因;DTY试样的结晶速度快,则其结晶度高且结晶结构不匀,条干不匀率大,导致其染色性能差;反之,则染色性能好;生产中控制涤纶DTY的条干不匀率小于3.0%,DTY染色均匀。     

涤纶FDY色丝工艺

介绍涤纶FDY色丝的生产工艺。控制干燥后切片、色母粒的含水率和黏度降,选择适当的纺丝温度、熔体压力、冷却成形条件、卷绕工艺,可以纺制优质产品。     

Analysis of five sets of color difference data

In a systematic optimization process five sets of recent color difference data have been analyzed for commonalities. Adjustment of the X tristimulus values and application of a systematic, surround dependent S_L function was found to be beneficial in all cases. Other modifications of the CIE94 color‐difference formula were found to bring improvements only in some cases and may be spurious. Application of what seem to be nonsystematic scale factors in a range of 0.78–1.38 improve correlation between calculated and visual color differences in all cases. After optimization, calculated color difference values explain between 80–90% of the variation in visual color differences. Some of the datasets are shown not to be well suited for formula optimization. Optimization in all cases by set, for three sets of data by quadrant in the a^*b^* diagram, and for one set by subset did not reveal any additional systematic trends for improvement. It appears that the basic structure of CIE94, with the recommended modifications, is a good approximation as a model for color‐difference evaluation in the range from 0.5–10 units of difference. The model is surround dependent. A number of issues remain to be resolved. © 2001 John Wiley & Sons, Inc. Col Res Appl, 26, 141–150, 2001     

Color difference predicted by color component differences

A relationship between assessed color differences and assessed components of colors is presented. The perceptual difference between colors j and k is converted to a lightness difference of two Munsell grays, V_A and V_B, and d_jk = |V_A ? V_B|. Scaled values of principal hue components of a color ξ _α(H|V/C), α = R, Y, G, and B, are read from charts based on assessments of observers. Previous charts (Color Research and Application, 1999, 24, 266–279) are enlarged and extended. A linear combination of ΔV = |V_j ? V_k| and Δξ _α = |ξ _α(H_j|V_j/C_j) ? ξ _α(H_k|V_k /C_k)|, d?_jk, is the best to predict d_jk. The root‐mean‐squares of (d_jk ? d?_jk) is 0.34 V, about one third of the lightness difference from V to V + 1 on the Munsell Value Scale.     

PA6 DTY染色不匀影响因素的探讨

对PA6预取向丝(POY)和弹力丝(DTY)的结构、力学性能等进行测试分析,探讨了PA6 POY在DTY加工过程中结构的变化对染色性能的影响。结果表明:PA6 POY经拉伸变形后,其晶型由亚稳定态的γ晶型转变为稳态的α晶型,随着POY双折射和初始模量的增加,在变形加工过程中所受的加捻张力增大。PA6 POY的结构差异在假捻变形中被放大,取向度较低、初始模量较小的PA6 POY在加工过程时受的假捻张力较小,制得的DTY结晶度较低,染色偏深,造成锦纶DTY的染色均匀性下降。     

Geodesic calculation of color difference formulas and comparison with the munsell color order system

Riemannian metric tensors of color difference formulas are derived from the line elements in a color space. The shortest curve between two points in a color space can be calculated from the metric tensors. This shortest curve is called a geodesic. In this article, the authors present computed geodesic curves and corresponding contours of the CIELAB ( ), the CIELUV ( ), the OSA‐UCS (ΔE_E) and an infinitesimal approximation of the CIEDE2000 (ΔE₀₀) color difference metrics in the CIELAB color space. At a fixed value of lightness L*, geodesic curves originating from the achromatic point and their corresponding contours of the above four formulas in the CIELAB color space can be described as hue geodesics and chroma contours. The Munsell chromas and hue circles at the Munsell values 3, 5, and 7 are compared with computed hue geodesics and chroma contours of these formulas at three different fixed lightness values. It is found that the Munsell chromas and hue circles do not the match the computed hue geodesics and chroma contours of above mentioned formulas at different Munsell values. The results also show that the distribution of color stimuli predicted by the infinitesimal approximation of CIEDE2000 (ΔE₀₀) and the OSA‐UCS (ΔE_E) in the CIELAB color space are in general not better than the conventional CIELAB (ΔE) and CIELUV (ΔE) formulas. © 2012 Wiley Periodicals, Inc. Col Res Appl, 38, 259–266, 2013     

涤纶长丝织物产生色差的原因分析

介绍了测试有色差涤纶长丝织物中深浅色差丝的热应力、取向度和单丝直径来分析织物产生色差的原因。指出单丝直径的差异是产生织物色差的主要根源。织物色泽随直径变大而加深 ,单纤维的直径相差越大 ,则色差越明显。