高速公路用超短涤纶纤维

月前,“高速公路用超短涤纶纤维开发“项目在仪化获得成功,开发出的路用超短纤维,实现了产品工业化稳定生产,形成了具有自主运作权的生产技术。     

涤纶短纤维差别化产品的开发和市场前景

叙述了在合成纤维短纤维试验装置上 ,使用直接纺丝、间接纺丝、复合纺丝等技术 ,开发和研制的涤纶差别化纤维产品——细旦缝纫线用短纤维 ,复合纺丝芳香纤维、涤纶超短纤维、高收缩纤维、“奇异”纤维、增白纤维、中空纤维。同时 ,也对涤纶短纤维差别化产品的市场前景进行探讨 ,认为有显性市场和潜在市场可以开拓     

粘胶超短纤维的生产

粘胶超短纤维是用于高级造纸、植绒的新型纤维品种,衡量粘胶超短纤维质量的主要指标是其分散性及切断长度。介绍了粘胶超短纤维的生产过程和解决其分散性的方法。     

PE/PP皮芯型复合超短纤维生产技术

本文从原丝质量控制、原料选择、油剂的选用和工艺条件等方面介绍了PE/PP(聚乙烯/聚丙烯)皮芯复合超短纤维生产技术，指出分散性是超短纤维最主要的控制指标，3mm纤维是超短纤维的发展趋势．     

产业用聚酯短纤维制造技术和产品开发

广泛应用在纺织和非织造布业的涤纶短纤维直接纺技术、复合纺技术以及熔体改性、超短、三维成型、回收、无机添加等技术的成熟发展,为产业用短纤维开辟了良好的市场前景。产业用纤维的产品开发主要重点是非织造布用基础材料和粘合材料,填充和过滤材料以及道路建筑用材料等。新聚酯和功能性纤维是产业用短纤维的发展希望,目前正从超前开发逐步回归理性,并注重市场开发和可持续发展。     

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。     

涤纶纤维用高温分散剂介绍

一、涤纶纤维的染色涤纶纤维染色是以分散染料为主。涤纶纤维本身具有结晶性和定向性,由于纤维结构紧密,所以染料分子向纤维内扩散困难,比其他纤维染着速度缓慢。为了增大纤维染着速度,一般采用载体染色、高温高压染色和轧蒸法染色及热熔染色等染色方法。本文主要就涤纶纤维染色用高温分散剂做一些介绍。涤纶纤维在染色加工时对于分散剂的要求可归纳     

国内涤纶中空纤维产品状况及发展趋势

涤纶中空纤维作为我国“八五”和“九五”期间大力发展的差别化纤维产品，主要应用于填充料、无纺布、人造毛皮等行业。20世纪90年代初，仪征化纤率先从国外引进三维卷曲涤纶中空纤维生产技术和设备，产品质量和产量在国内一直名列榜首。然而近年来，涤纶中空纤维产能急剧扩大，尤其是一些小化纤厂纷纷用回收瓶料生产涤纶中空纤维，因而在国内涤纶中空纤维产品市场上占有一席之地。     

我国涤纶超细纤维专用分散染料的发展现状和市场分析

介绍了我国涤纶超细纤维及其纺织产品的发展概况以及涤纶超细纤维用分散染料的发展情况,分析了我国涤纶超细纤维专用分散染料的市场现状,对我国今后5年的涤纶超细纤维用分散染料市场发展进行了预测.     

丙纶超短纤维的开发

探讨了丙纶超短纤维的加工技术，采用德国纽马格公司的短程约生产线和适当的工艺条件，加工出３．３ｄｔｅｘ×５．０ｍｍ的丙纶超短纤维。     

低引燃倾向(LIP)卷烟纸热失重和热裂解产物的研究

采用热重分析法研究了低引燃倾向(LIP)卷烟纸的热失重行为。将LIP卷烟纸分别在300,600,900℃的空气环境下进行热裂解,并与对照卷烟纸的裂解产物进行对比。结果表明:①由于阻燃剂吸收部分热量,LIP卷烟纸起始裂解温度向低温方向偏移;②LIP卷烟纸的裂解产物和对照卷烟纸相比,物质和含量不同,但产物种类相同,主要是酮类、酯类、醛类、酸类物质,在LIP卷烟纸中还检测到21种致香成分,明显多于对照卷烟纸的7种,且致香成分的含量随裂解温度的升高而降低。     

Shrinkage of Recycled Paper Sheet During Drying

The properties of recycled paper are strongly affected by shrinking during drying, which depends on the drying conditions. An experimental study of the shrinkage phenomenon during drying of paper is presented. Drying experiments were conducted in a drying oven with controlled temperature. The temperature influence on shrinkage extent, porosity, and apparent density of the paper was evaluated. Structural changes on the paper surface after drying were analyzed by scanning electronic microscopy. Thickness contraction, surface, and volumetric shrinkage were correlated as a function of the moisture content. Lower apparent density values and more porous paper samples were obtained for higher temperatures.     

Mechanical properties of polymer–paper laminates

Tensile mechanical properties of synthetic polymer–paper laminates were measured. The laminates were constructed by hot pressing a sandwich made of a sheet of paper between polymer films. There is complete penetration of the polymer inside the paper; no voids are left. Two different polymer matrices were used: poly(methyl methacrylate) and polyethylene. Several paper samples were utilized: an unoriented holocellulose paper (a strong paper), a highly oriented holocellulose paper, and an unoriented Whatman filter paper (a weak paper). The laminates contain from 0% to 50% of paper. Young's moduli and breaking strengths of the unoriented holocellulose paper laminates can be theoretically predicted from the properties of their constituents using laws of mixtures. The mechanical properties of the Whatman paper laminates are significantly higher than those predicted from the laws of mixtures. This indicates that the polymer increases the strength of the fiber-to-fiber bonds of the weaker sheets, although it does not change the bond strength of a stronger paper such as the holocellulose paper. For the oriented paper laminates, changes in Young's modulus with angle of measurement are explained by the composite materials theories if the angular variations in shear modulus are taken in to account. Changes in breaking strength with angle for the oriented laminates can be analyzed by Tsai and Azzi's theory for composite materials.     

国产间位芳纶纸蜂窝性能的研究

使用国产间位芳纶纸制造蜂窝,研究了国产间芳纶纸蜂窝的主要力学性能及物理性能。结果表明：国产间位芳纶纸蜂窝主要力学性能基本能够达到美国杜邦间位芳纶纸蜂窝的性能,满足民用芳纶纸蜂窝的使用要求。     

喷射器在轻化工节能改造中的应用

介绍了喷射器的工作原理。分析了喷射器在轻化工领域中的造纸行业、石油工业、合成氨生产以及脱碳工艺的节能改造中的应用,文章的研究可为同行业的工业应用提供指导。     

Esterification of Galactomannan and Polyacid as Paper Strengthening Agent

In this paper, eight paper strengthening agents were obtained by the esterification of galactomannan with trimesic acid or butanetetracarboxylic acid. The esterified galactomannan was studied using a ¹³C NMR spectrum, Frontier transform infrared spectroscopy, and elemental analysis. Then, the properties of the paper with esterified galactomannan were also investigated. The results of the ¹³C NMR spectrum and infrared spectroscopic analysis showed that the galactomannan had been successfully esterified with the trimesic acid or butanetetracarboxylic acid. The paper properties with 1% esterified galactomannan were found to be efficiently improved, when compared with the control sample. The polyacid dosages were also found to affect the paper properties. The SEM analysis showed that the esterified galactomannan could effectively increase the inter-fiber bonding in the paper.     

PP编织布与牛皮纸复合工艺易出现缺陷及改进措施

总结了PP编织布与牛皮纸复合工艺中易出现问题 ,并对其原因进行了简要分析 ,提出了切实可行的防止和改进措施     

云母纸表面与界面改性及增强机理研究

云母纸成纸主要依靠云母鳞片间的范德华力和静电引力,纸张强度较低,不佳的表面与界面状态,易导致无法成纸.讨论了粒度级配、表面改性、水质改善等表面与界面改性技术,改善云母纸表面与界面特性,提高云母纸材料的拉伸、介电强度.并结合最大密度曲线理论、架桥键合作用、双电层理论,分析表面与界面增强的机理.研究表明:经表面与界面改性后,云母纸的拉伸强度与介电强度均有较大程度的提升.     

The Influence of Isopropyl Alcohol and Non-ionic Surfactant Solutions on the Mechanical Properties of Offset Paper

The dynamic mechanical properties of coated offset paper before and after application of isopropyl alcohol and surfactant solutions have been investigated. The mechanical properties of the papers were studied with dynamical mechanical analysis in the tensile mode and the samples were submitted to a uniaxial loading in stress–strain measurements. An increase in the isopropyl alcohol concentration slightly reduced the mechanical strength, while the addition of surfactant clearly made the paper stiffer and weakened the paper strength. As the surface tensions of the liquids were adjusted to the same level, the changes in mechanical properties are ascribed to changes in water-induced wetting and subsequent changes in interfacial properties within the paper constituents. The storage and loss moduli of the paper after application of the surfactant solutions were twice those recorded after isopropyl alcohol treatment. The binder was not affected by the solutions, but there was significant debonding, disrupting the internal or surface structure in the base paper-coating layer interface, especially by surfactant solutions.     

造纸用微细碳酸钙的工艺技术

造纸工业在我国国民经济中占有重要地位,而碳酸钙在纸张中的作用主要是作纸张的填料,以保证纸张一定的强度和白度,同时降低生产成本。从目前纸张的产量和结构来看,碳酸钙的需求将会有很大增长。着重介绍了造纸用微细碳酸钙的技术工艺。指出碳酸钙行业应推广机械化立窑、连续碳化、母液闭路循环等新工艺,开发科技含量高、附加值高的微细产品,优化发展环境,并增加产品的抗风险能力和竞争力。