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采用熔融纺丝法将改性聚酯切片制成具有与柞蚕丝相似截面形态和结构性能的仿柞蚕丝聚酯纤维,分别探讨了仿柞蚕丝聚酯纤维和柞蚕丝纤维的截面形态和结构性能。研究结果表明仿柞蚕丝聚酯纤维与柞蚕丝纤维具有相似的扁平状截面形态,其截面形态的均匀性较好;仿柞蚕丝聚酯纤维的取向因子、弹性形变、回弹率、柔量、功系数、断裂强度和断裂伸长率都比柞蚕丝纤维的大,而其纤维的声模量和塑性形变比柞蚕丝的塑性形变小;随着定伸长率的增加,仿柞蚕丝聚酯纤维和柞蚕丝的弹性形变和回弹率都明显下降,但其塑性伸长有所增加。 相似文献
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聚酯分散染料染色近况聚酯(涤纶)是最常见的合成纤维,因能抗磨损、耐日晒,还能耐受常用的酸、碱和漂白剂等化学品浸蚀,已广泛用于服装装饰材料和产业用品等方面。有许多方法能使聚酯纤维改性,如改变其分子量,纤维的取向度(结晶度)、改变纤维的横截面形状及卷曲度... 相似文献
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为更好地了解新型差别化聚酯纤维的结构与性能,为后续产品开发提供参考,选取聚对苯二甲酸乙二醇酯(PET)、聚对苯二甲酸丙二醇酯(PTT)、低黏度PET/高收缩PET复合纤维(SPH)、PET/PTT双组分复合弹性纤维(T400)4种差别化聚酯纤维,借助扫描电子显微镜、傅里叶红外光谱仪、X射线衍射仪、超景深三维数码显微镜、热性能分析仪等对纤维的结构与性能进行测试与分析。结果表明:SPH、T400纤维表面有沟槽,可以产生毛细效应;SPH经拉伸或热处理后可产生纤维的自卷曲效应;T400纤维卷曲收缩率大,断裂强度高,弹性回复性好;PET断裂强度高,可以做仿蚕丝产品;PTT分子结构具有独特的奇碳效应,使其纤维具有较高回弹性及弹性回复性。 相似文献
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日本纤维的需求中产业用纤维已上升至40 %。产业用纤维要求有优异的动力学特性、功能及耐用性 ,由于成本和性能的权衡 ,聚酯纤维已经在很多用品中取代了尼龙。这主要是因为聚酯纤维可在多方面满足产业的要求 ,又因为它们的不断开发和发展 ,同时改进了一直不足的性能。本文结合帝人公司的情况对产业用聚酯纤维的开发概况做了介绍。1 产业用聚酯纤维的发展产业用纤维代表性的用途是轮胎帘子线、带、网和绳索、厚帆布、毡及非织造布。毡和非织造布需求的增长令人注目。作为纤维材料 ,聚酯纤维在上述所有用途中都是主要材料。聚酯纤维具有作为… 相似文献
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世界聚酯纤维新产品开发和应用市场趋势 总被引:2,自引:0,他引:2
主要介绍2005年以来世界聚酯纤维产品(包括新聚酯)开发的主要生产技术和产品特点,介绍了聚酯纤维应用市场发展趋势。世界聚酯纤维新产品大类主要体现在:采用新型的聚酯合成工艺,有效提高纤维的再加工性能和纤维的安全、环保等性能的产品;通过改善纤维原料和添加辅助单体性能以及采用复合纺丝等技术,生产用于专业领域的新产品,包括技术纺织品等;采用新聚酯生产技术生产具有前瞻性的商业化产品PTT、PBT、PEN、PLA等。 相似文献
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将涤纶纤维进行不同收缩率,不同纤度,不同孔形的三异化设计,就能赋于织物特殊的外观和手感。三异纤维是理想的仿真丝纤维。文中对三异纤维的工艺路线进行了探讨,认为采用收缩性不同的两种涤纶切片,利用双螺杆复合纺丝技术生产出总纤度小于111dtex的三异纤维的工艺路线是先进的。 相似文献
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论述了极细涤纶纤维的染色性,如极细纤维表观染色深度浅的原因,极细纤维的上染性、染色速度、色泽的鲜明性、染色坚牢度等,着重介绍其改善的途径,主要从染料、材料及染色方法等方面来解决。 相似文献
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Porous polyester fibres with cotton-like dull characteristics were produced by salt leaching method. Polyester was synthesized in the presence of common salt. Fibres containing submicron size salt particles (0.5–1%) were prepared by melt spinning. The fibres were washed in hot water to remove the salt particles creating small craters of size 50–1000?nm. Partially oriented yarn (POY) and fully drawn yarn (FDY) were produced. POY samples were textured to produce polyester textured yarn containing salt particles. The influence of salt particles on polymer crystallization was investigated and found that the presence of salt significantly influences the rate of crystallization. The gloss values of porous FDYs were compared with standard semi-dull polyester yarns of same denier. The light scattering behaviour of the yarn has been enhanced due to porosity. This resulted in a fibre with better dullness characteristics. The light reflectance of porous yarn is lower in the 400–700?nm region compared to control FDY samples. The dyeability of the porous fibre was better than non-porous counterpart. 相似文献
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This present study deals with the compression creep behaviour of polyester needle-punched nonwoven fabrics. Polyester fibres of three different cross-sectional shapes (round, circular hollow and trilobal) have been selected for this study. An instrument has been designed and fabricated to measure the compression creep property of needle-punched fabrics. The effect of duration of compression load, fabric weight, fibre cross-sectional shapes and reinforcing material on percentage compression creep has been studied. It has been observed that initially, compression creep decreases rapidly and with increase in time, decrease of percentage creep becomes minimal. After about 8500?min of application of the same compression load, no change in compression creep is noticed. The percentage compression creep decreases with the increase in fabric weight irrespective to fibre cross-sectional shapes of polyester needle-punched nonwoven fabrics. Trilobal cross-sectional fabric shows maximum amount of percentage compression creep at all levels of fabric weight followed by round and hollow cross-sectional polyester samples, respectively. The percentage compression creep is higher in case of fabric samples made without reinforcing material compared to the samples with reinforcing material. Hollow cross-sectional polyester fibre can be successfully used as raw material for the preparation of needle-punched nonwoven fabrics with or without reinforcing material carpet or floor mats. However, normal round cross-sectional polyester fibre only with reinforcing material can be used for the said application. Compression creep values of these selected polyester needle-punched fabric samples are much lesser in comparison with commercial market polypropylene needle-punched carpet samples. 相似文献
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