聚对苯二甲酸丙二酯纤维在机织物中的应用

对聚对苯二甲酸丙二酯(PTT)纤维在机织物中的应用进行了研究。利用不同结构的PTT纤维的纯纺和混纺纱线,设计开发了平纹和斜纹组织的交织物,并对其服用性能如弹性回复性、折皱回复性、刚柔度、悬垂性、抗起毛起球性等进行了测试与分析。通过测试分析可以得出:利用PTT纤维可得到柔软、悬垂、抗皱的弹性机织物。     

Tencel织物的服用性能研究

测试了Tencel纯纺和混纺织物的舒适性、悬垂性、折皱回复性、起拱变形性、耐磨性和起毛起球性等服用性能指标，同时与粘胶纤维织物、棉织物进行比较，表明Tencel织物优于其它织物，具有优良的服用性能。     

聚酯纤维

20046047 PTT/PET混合物的染色Yang Yiqi…;AATCC Review,2002,2(8),p.54(英) 研究了PTT/PET混合物的染色性能。测试了染色时间以及温度对上色的影响。在PTT/PET不同混合比的染色条件下,研究混合比对染色品质量的影响, 如上染率,色深,色牢度。由于分散染料的亲和力和PTT的常压可染,PTT/PET混合物在同一染浴中, 只用分散染料染色。同时还讨论了达到这种颜色式样的方法及交染样品的结果。PTT/PET混合物的染色质量与100%PET相近。改善了的织物加工性能以及交染能力为这种新产品提供一些新的性能。(薛敏敏)     

PTT抗折皱织物的开发及服用性能测试

将聚对苯二甲酸丙二酯(PTT)长丝分别与PTT长丝、聚酯(PET)长丝、棉纱以交织的方法开发了PTT抗折皱平纹织物,对产品的服用舒适性、织物风格、抗折皱效果进行了测试、分析与评价。测试结果表明:PTT抗折皱织物具有较好的弹性,在拉伸变形时的回复能力较好,同时在弯曲和剪切变形时也具有相当高的回复能力,即织物拥有较好的抗折皱功能,其各项服用性能也符合开发PTT抗折皱机织类产品的标准。     

网印特效技术开发粘胶长丝产品及服用性能测试的研究

利用网印特效技术开发粘胶长丝产品,并对纯棉织物、纯涤纶织物、网印特效织物的撕破性能、耐磨性、抗皱性、刚柔性、悬垂性、透气性、透湿性以及抗起毛起球性等服用性能进行测试分析,以期对企业有所帮助。     

PTT/PET自卷曲长丝的拉伸和弹性回复性能

对相同细度的3种聚对苯二甲酸丙二醇酯（PTT）／聚对苯二甲酸乙二醇酯（PET）自巷曲长丝进行拉伸性能和定伸长回复性能测试。测试结果表明：PTT/PET自卷曲长丝拉伸曲线具有典型的两个阶段和两个屈服点的特征,预加张力的大小对于伸长率的测试结果影响很大;卷曲伸长对该类长丝较高的伸长率有较大贡献,经过湿热处理后的长丝卷曲伸长和断裂伸长明显增加,但是不同的PTT／PET自卷曲长丝的伸长能力有一定差异;PTT/PET自卷曲长丝的弹性回复性能低于纯PTT长丝,而高于PET长丝,弹性回复性主要来源于具有优异弹性回复性的PTT大分子链结构;热处理的PTT/PET长丝在高定伸长率下有着较好的弹性回复性,在定长为30％时的弹性回复率接近100％。     

PTT／PET混纺或交织物的染色

该文阐述了PTT纤维、PET纤维及其混纺或交织物的染色性能和染色用染料.在染色工艺过程中温度、时间对染色表观深度的影响.染色结果表明混纺或交织物的染色牢度与单一纤维织物的染色牢度相同,分散染料对PTT的染色比PET容易,但在PTT和PET上的染色牢度极为相似.     

丽赛织物洗涤性能研究

测试了纯棉织物以及棉／丽赛、棉／涤纶和棉／粘交织物洗涤一定次数后拉伸性能和悬垂性能的变化，试验结果表明，经过10次洗涤后棉／丽赛交织物的耐洗涤性能较纯棉织物好，比棉／粘交织物有明显提高。     

PET/PTT共混体系的相容特性及力学性能研究

通过熔融共混法制备了聚对苯二甲酸乙二醇酯(PET)与聚对苯二甲酸醇酯(PTT)的共混物,采用差示扫描量热仪、动态热机械分析仪、万能电子试验机等对共混体系的热性能、动态力学性能及拉伸性能进行了测试。测得PET/PTT共混体系只有1个玻璃化转变温度(Tg)和损耗峰,表明在非晶区完全相容,其中纯PET的Tg为84℃,纯PTT的Tg低于50℃; 而双重熔融峰及热结晶峰宽化现象的出现表明,共混体系在晶区是部分相容,各组分倾向于分别进行有序化排列、单独结晶,其中纯PET的熔点为256℃,纯PTT的熔点为229 ℃;共混体系的拉伸模量和拉伸强度随PTT含量的增加呈上升趋势;但当共混比例接近时体系的拉伸模量和拉伸强度有所下降,共混比为5/5时的拉伸模量和拉伸强度分别低达1098MPa和51MPa。     

从织物弹性考查PTT/PET双组分长丝的制造技术

首先采用自纺丝和企业中试丝两大系列18种聚对苯二甲酸丙二酯(PTT)/聚对苯二甲酸乙二酯(PET)双组分长丝,试制了18种机织物试样,并进行织物弹性测试,分析复合方式、PTT组分特性黏度和含量、热盘温度4个主要纺丝工艺参数对织物弹性的影响。试验发现,在采用板内复合纺丝方法,PTT和PET两组分特性黏度差较大,热盘温度高的纺丝条件下,织物的定力伸长率比较大;文献资料报道的PTT质量分数为50%时双组分纤维卷曲曲率及卷曲伸长率最大仅仅是某些条件下的试验结果,当PET与PTT弹性模量比(e)较大时,存在例外情况。     

形状记忆聚氨酯及其应用

主要介绍了形状记忆聚氨酯的最新研究进展及其形状记忆效应的机理和结构特点,分析了其在防水透气织物等领域的应用,并对其发展方向做了展望.     

聚乳酸形状记忆发泡材料制备与形状记忆性能研究

利用超临界CO;间歇性降压法,制备一系列不同微观结构的聚乳酸(PLA)发泡材料,并探究环境温度、保压压强对PLA发泡材料微观形貌、孔隙率、泡孔尺寸的影响,并分析PLA发泡材料的形状记忆性能。结果表明:制备的PLA发泡材料具有结构可调控、形状记忆性能良好等特点。当保压压强为17.24 MPa,环境温度为140℃,PLA发泡材料具有较大膨胀率,且泡孔形貌均匀,具有良好形状记忆性能。低于20℃的变形温度下,PLA发泡材料的形状记忆固定率与回复率较好,其形状记忆回复率达到90%以上。     

Advances in Shape Memory Polyurethanes and Composites: A Review

Polyurethanes are synthetic smart materials having exquisite property to regain original shape from temporary shape when an external force (heat, light, electricity, and entropy driven deformation) is applied. Shape memory polyurethanes have ability to replace shape memory alloys due to cut-rate, easy manufacturing, programing, and high shape recovery ratio. The review focused on polyurethane types exhibiting shape memory effect and various categories of shape memory effects in polyurethane. Moreover, compound structure, modeling structure, applications, and related synthetic methods for shape memory polyurethanes are discussed. The strategies for induction of cross-linking and post cross-linking at high, medium, and low temperature are surveyed.     

智能防水透湿聚氨酯研究进展

简要介绍了实现形状记忆聚氨酯(SMPU)的智能透湿机理,综述了SMPU在智能透湿性方面的研究进展及智能防水透湿膜和织物研究中存在的问题,提出了研究开发具有创新功能的智能防水透湿织物是未来纺织工业发展的趋势。     

形状记忆聚氨酯研究现状

本文在介绍形状记忆聚氨酯的形状记忆机理及其影响因素的基础上,介绍了交联型形状记忆聚氨酯、复合改性形状记忆聚氨酯以及水性形状记忆聚氨酯的国内外研究进展,并简要介绍了形状记忆聚氨酯在纺织、医疗等方面的应用,最后对形状记忆聚氨酯的发展方向进行了展望。     

Properties of Polypropylene/Poly(ethylene terephthalate) Thermostimulative Shape Memory Blends Reactively Compatibilized by Maleic Anhydride Grafted Polyethylene-Octene Elastomer

PP/PET thermostimulative shape memory blends at composition 90/10, which used POE-g-MAH as a reactive compatibilizer, were prepared by melting extrusion. The results of SEM, POM, DSC, mechanical property, shape memory property, and melt rheological behavior showed that addition of POE-g-MAH improved compatibility between PP and PET, increased interaction between the two phases, and reduced size of the dispersive PET phase and crystallization ability of PP. Moderate POE-g-MAH could enhanced the shape memory property of the blends, meanwhile improved the mechanical properties and the processing performance. When concentration of POE-g-MAH was 5–7 phr, the blends had a better comprehensive performance.     

Creating aesthetics and functional values in cotton fabrics through the introduction of thermobonding amorphous polyester fibers into blends

Low‐melting thermobonding PET (copolymer) fibers were used to produce heather effects in fabrics blended with cotton, which could be classified as natural 100% cotton fabrics. PET (copolymer) fibers produced at relatively low molecular weights with intrinsic viscosities of 0.57 and 0.47 were used in this investigation. These were mostly amorphous fibers that showed a low specific gravity at 1.27 g cm^?3. The fibers were blended with cotton to produce open‐ended spun yarns without the PET component being melted. These yarns were knit into fabrics and cured. The curing was based on the thermal behavior of these fibers as observed in differential scanning calorimetry thermograms. The amount of pigmented PET copolymer needed to achieve the required heather effect was optimized by variations of the blend ratios. This approach provided another avenue for introducing additional functional properties, such as antibacterial and soil‐resistance properties, to the fabric. Both the fibers and resultant fabric properties were studied extensively, along with the finishing of these fabrics. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 89: 3747–3756, 2003