PTT“形状记忆”织物回复原始形状的机制

为探究PTT（聚对苯二甲酸丙二醇酯）“形状记忆”织物回复原始形状的机制,设计试验,分别应用悬臂梁装置和模仿人熨烫服装的熨烫力作用,研究了外力、温度、外力与人体温度联合3种外界条件对该类织物折皱回复性能的影响。实验结果表明：温度对织物经纬向的回复性能均无明显影响,当温度升至PTT聚合物玻璃化转变温度以上时,织物的折皱回复角没有显著提高;模仿人熨烫服装的作用力对该织物回复原始形状非常有效,当施加很小的力（5 N/cm²）,折皱回复率就超出81%,当温度低于和高出聚合物的玻璃化转变温度时,施加同样的力,PTT织物的折皱回复率却没有显著提高,故认为力是影响PTT“形状记忆”织物回复其原始形状的主要因素。     

形状记忆整理棉织物回复性与物理性能的关系

探讨10种棉及棉型织物经形状记忆整理后的性能.采用灰色关联分析方法对织物的折皱回复性指标如折皱回复角、平整级别和折痕级别与其物理性能如尺寸保持率、断裂伸长率、拉伸强度保持率和撕裂强度保持率的关联度进行了讨论.结果表明,形状记忆整理织物尺寸保持率与折皱回复性能的指标的关联最大,而撕裂强度与这几项特征性能的关联最小.除了尺寸稳定性外,断裂伸长率和拉伸强度保持率与折皱回复角的关联较大;拉伸断裂强度保持率与平整级别和折痕级别的关联较大,其次是断裂伸长率.     

经编纵条衬衫织物折皱回复各向异性及其表征

为研究经编纵条衬衫织物折皱回复的各向异性并合理表征其折皱回复性,运用SDL-M003A折皱回复角试验机测量经编纵条衬衫织物在不同取向角下的折皱回复角。为了提高织物的利用率和测量效率,首先对标准规定的测量方法进行适当改进;然后分析织物在不同取向角下折皱回复性的变化规律;最后采用相关分析法分析织物正反面各个取向角下折皱回复角的均值与取向角为0°和90°下折皱回复角均值之间的相关性。研究结果表明：经编纵条衬衫织物取向角不同,折皱回复性也不同;同一取向角下织物正反面折皱回复性也存在差异;在织物正面,取向角由0°到165°的变化过程中,折皱回复角先增大后减小;可以用正反面取向角0°和90°下折皱回复角的均值表征经编纵条衬衫织物的折皱回复性。     

改性聚硅氧烷整理对涤纶织物性能的影响

以自制的改性聚硅氧烷柔软剂对涤纶织物进行整理,探讨了柔软剂质量浓度、温度、时间、pH等参数对涤纶织物的手感、硬挺度、白度、悬垂系数和折皱回复角等性能的影响。试验结果表明,最佳整理工艺参数为:有机硅柔软剂质量浓度40 g/L焙烘温度150℃整理液pH 5.5~6.0焙烘时间60 s;经过有机硅柔软剂整理后,涤纶织物具有良好的柔软性折皱回复角减小。     

PTT形状记忆织物形变保持及形状回复性研究

为一了研究PTT形状记忆织物的形变保持及回复性能,对4种pn,形状记忆织物进行了折皱回复性能的测定,研究了影响PTT织物形变保持性的因素.结果表明,PTT织物的形变保持性主要受纱线参数和织物结构参数影响.自制了一套用以测试PTT形状记忆织物变形后回复原始形状的装置,测试结果表明,PTT形状记忆织物在较小的外力作用下即可...     

热湿处理对免烫羊毛织物保形性能的影响

为提升热湿处理后免烫羊毛织物的保形性能,分别在不同温度和湿度条件下对免烫羊毛织物进行处理。借助织物折皱弹性测试仪、万能强力仪、扫描电子显微镜、傅里叶红外光谱仪、X射线衍射仪等对处理前后免烫羊毛织物的折皱回复角、断裂强力和微观结构进行测试与表征。结果表明:免烫羊毛织物的折皱回复角随着测试温度和相对湿度的升高而下降,其中经90%相对湿度、100 ℃条件处理的免烫羊毛织物,折皱回复角降低为原样的88.2%;当免烫羊毛织物的处理温度不变时,断裂强力随着相对湿度的增高而逐渐下降;经过较高温度热湿处理的免烫羊毛织物,其表面纤维受到损伤,结晶度基本没有变化。     

棉织物的硅烷偶联剂改性柠檬酸抗皱阻燃整理

采用硅烷偶联剂(APTES)和APTES改性柠檬酸整理棉织物。测定了不同工艺对棉织物折皱回复角、拉伸强力、撕破强力及垂直燃烧性能的影响。采用傅里叶红外光谱图研究改性机理,通过热重分析、扫描电镜研究阻燃效果。结果表明:硅烷偶联剂的氨基与柠檬酸的羧基反应生成酰胺键;改性柠檬酸整理的棉织物,折皱回复角明显提高,阴燃时间趋近于零。其初始分解温度降低,400~600℃下的残留量增加;整理后织物的燃烧残渣形态完整。     

织物折皱回复的各向异性表征

针对织物折皱回复存在各向异性且难以描述的问题,将通过研究试样取向角与其对应的折皱回复角的关系,寻找更科学的织物折皱回复性能表征方法。选择纯棉平纹和斜纹织物为实验材料,从经纱方向（取向角定为0°）顺时针旋转,每隔15°取一试样,平纹织物取样角度范围为0°~90°,斜纹织物取样角度范围为0°~180°。通过机器视觉测量每一试样的折皱回复角,结果表明：平纹织物可用15°和75°取向角对应的折皱回复角均值表征织物折皱回复性能;斜纹织物折皱回复角与其纹路角度密切相关,对于左斜120°左右的斜纹织物,正面用取向角15°、105°、120°的折皱回复角均值,反面用取向角0°、60°、120°的折皱回复角均值来表示织物折皱回复性能更加合理。     

用乙二醛提高真丝织物的抗皱性能

对真丝织物乙二醛的抗皱整理进行了探讨。分析了影响整理的各种因素。实验结果表明，在酸和催化剂的存在下，整理织物的干折皱回复角（ＤＣＲＡ） 得到了显著的提高，织物强度有所增加，白度下降不大，但湿折皱回复角有待进一步提高。     

乙二醛在大豆纤维织物防皱整理中的应用

介绍了乙二醛对大豆纤维进行防皱整理的机理，讨论了整理剂用量、焙烘温度、焙烘时间、催化剂及酸处理对大豆纤维抗皱整理效果的影响，通过测试在不同整理条件下织物的干、湿回复角、白度等性能取得了优化工艺条件。结果表明：在一定工艺条件下，经乙二醛整理后织物的湿弹折皱回复角可提高60％左右。     

形状记忆合金纺织品及其开发

概述了国内外形状记忆合金材料纺织品的研究进展。研制成形状记忆纺织品,包括形状记忆抗皱织物、管状组织织物、文胸内衬织物等。这些织物能随温度变化而改变形状,从而具有特定的功能。     

形状记忆合金纺织品及其开发

概述了形状记忆镍钛合金材料在国内外纺织业的研究进展;开发了形状记忆纺织品。研制出形状记忆抗皱织物、文胸内衬织物、管状组织织物等,这些织物能随温度变化而改变形状,从而具有某种功能。为形状记忆合金织物的开发作了初步探索。     

Inspecting anisotropy in wrinkle recovery angle of woven fabric

In this paper, the anisotropic wrinkle recovery properties of plain and twill fabrics are explored by studying the variations of the wrinkle recovery angle with sample orientation angle. Orientation angle is the angle measured counterclockwise from the weft direction to the sample’s long axis, that is, the crease direction. This study focused on inspecting anisotropy in wrinkle recovery to find more effective test angles for different woven fabrics. A dynamic wrinkle recovery tester was used to measure the recovery angles of specimens automatically which were cut in various directions. The trend of plain fabrics shows that its recovery angle generally increases at first and then decreases with the increase in the orientation angle. The trend of twill fabrics differs in folding ways. The experimental results revealed that the wrinkle recovery angles of the woven fabrics had the lowest values near the orientation angles of 0° and 90°, i.e. the warp and weft directions, and therefore these two traditionally used directions in the standard test method did not best reflect the wrinkle recovery yielded from both warps and wefts. The diagonal direction (45°) was proven to be the optimal orientation angle for a balanced plain fabric, while the two orthogonal directions, i.e. the twill direction and its perpendicular direction, were found to be more relevant for a twill fabric. Optimal orientation angles used to test the wrinkle recovery angle of a woven fabric should be associated with its structure.     

Investigation on the novel measurement for fabric wrinkle simulating actual wear

It is very important to measure fabric wrinkling objectively and accurately. However, the most commonly used measurements could not be employed to realistically evaluate and predict how fabric will resist wrinkle when worn on human body. In our previous study, an equipment of measuring fabric wrinkling that can simulate actual wear was proposed. In this paper, we conduct further investigation on the measurement for fabric wrinkle-simulating actual wear, including improving the equipment, validating its repeatability, and clarifying its more accurate relationship with the wrinkle recovery angle (WRA) method. Results show that the measuring repeatability of the method is much better than WRA method and fabric wrinkling in the warp and bias direction plays more important part than weft. Therefore, it is advisable that WRA of the bias should be increased, whose measurement stability is the best in the WRA method as well. Equations of Wrinkle Density (WD) with WRAs are established, which can be used to estimate wrinkling of clothes after actual wear only by several WRAs of fabrics, avoiding the tedious clothes making and trial work.     

家庭洗涤对免烫棉织物性能的影响

为探究多元羧酸免烫棉织物在日常洗涤过程中免烫性能的保持情况,实验模拟了日常家庭洗涤的环境,对免烫棉织物在不同的洗涤助剂类型、不同洗涤温度、不同洗涤次数下进行洗涤处理。通过测试对比原免烫织物和不同方式洗涤后免烫棉织物的折皱回复角、断裂强力和化学结构表面形貌等,对免烫棉织物的免烫性能在洗涤过程中的保持能力进行分析。结果表明:经重复洗涤,免烫棉织物的断裂强力和折皱回复角都呈现出不同程度的降低;纤维的表面形貌及微观结构都产生了一定的变化;经80 ℃混合溶液重复洗涤处理50次后的断裂强力下降约26%,折皱回复角降低约50%;对免烫棉织物而言,在家庭洗涤过程中,高温复合重复洗涤对其免烫性能的破坏作用较大。     

几种不同组织结构的衬衫面料保形性研究

根据常见的衬衫面料组织结构,使用JC9.7 tex纱线设计了6种不同组织结构的面料,研究不同组织结构对织物保形性的影响。对面料的保形性(尺寸稳定性、抗折皱性、外观平整度、抗起毛起球性、顶破性、悬垂性)及舒适性(透气、透湿性)进行了测试。结果表明:组织结构对织物的折皱回复角、外观平整度等级、顶破强力、透湿量与透气率有直接影响;织物紧度太大、太小都不利于织物的折皱回复,相同紧度下斜纹组织的抗皱性比平纹好;6种组织结构中2/2斜纹组织抗折皱性最好,2/2方平组织的顶破强力、抗起毛起球等级最高,2/2破斜纹透气、透湿性最好,2/2斜纹组织具有良好的保形性。     

Wrinkle-free finishing of cotton fabrics based on click chemistry via ultraviolet radiation

In this paper, a novel method was proposed to achieve anti-wrinkle finishing of cotton fabrics. Cotton fabrics were pre-treated to terminate –OH groups and reduce the amount of –OH groups by the reaction between the –OC₂H₅ groups of 3-mercaptopropyltriethoxysilane and –OH groups of cotton fabrics. Then anti-wrinkle finishing of cotton fabric was obtained with waterborne polyurethane acrylate under ultraviolet radiation (UV) where click reaction between –SH groups and C=C bonds was taken place. The surface morphology, reaction and mechanical properties of cotton fabrics were investigated. The results show that the wrinkle recovery angle (WRA) of cotton fabrics reaches 205°, and the WRA can maintain 190° after 10 washing cycles, revealing that the anti-wrinkle finishing on cotton fabrics has durable effect. Furthermore, the anti-wrinkle finishing cotton fabrics maintain good mechanical properties like breaking strength.     

精纺毛织物折皱回复性研究

选取了24种精纺毛织物,将织物沿0°、10°、20°、30°、40°、45°、50°、60°、70°、80°、90°方向裁剪成11个试样,然后用YG541E型全自动激光织物折皱弹性测试仪测试了24块毛织物在11个方向下的急弹性和缓弹性折皱回复角。经过数据处理得出以下结论:毛织物的平均急弹性回复角(X)和平均缓弹性回复角(Y)之间具有高度正相关关系,且Y=0.9219X+20.275,可以应用此公式由急弹性回复角计算缓弹性回复角,以减少测试工作量;建议今后对毛织物进行折皱回复性测试与评价时,为提高评价准确性,经向、纬向以及45°斜向需一起考虑。