PTT形状记忆织物的性能研究

摘要PTT“形状记忆”织物是近三年发展起来的一种新型纺织面料,它是用PTT长丝织造的轻薄高紧密织物,除具有常规PTT织物的柔软手感以外,还具有常规织物不具备的“易塑形”性和折痕易复平性,前者使织物可以用手工折叠或者抓捏成所需的服装造型,后者使织物在穿着和储存过程中产生的折皱可以通过手抚摸平。从广义上讲,该类面料特性符合形状记忆材料的一般定义,即“具有某一原始形状,经过形变并固定后,在外界条件的刺激下能自动回复到初始形状的材料”。PTT“形状记忆”织物的感观特性又酷似形状记忆金属纤维的混纤面料,所以通常也被称作“形状记忆”织物。本课题设计了2个不同的织物组织，通过小样试织确定PTT形状记忆织物最基本的上机工艺参数。按照国家标准要求测定了各个试样的透气性，光泽性，耐磨性，刚柔性及折皱弹性等系列的实验。最后，分析总结各个实验数据，得到织物组织对PTT形状记忆织物各个性能的影响。实验表明,PTT织物的形状记忆效果受大分子材料性能的影响,同时也受其纺织结构的影响,织物经纬交织点越多、紧度越大,则其形状记忆效果越明显。关键词：PTT记忆织物、折皱回复性、记忆性、刚柔性ABSTRACTPTTshapememoryfabricisdevelopedinthelastthreeyearsanewtypeoftextilefabric.itisPTTfilamentweavingthinwovenfabricInadditiontotheconventionalPTTfabricssofttouch,butalsowithconventionalfabricdoesnothaveeasyshapingandcreaseseasilyre-leveling,TheformersothatthefabriccanbemanuallyfoldedorZhuanierequiredcostumes,whichmakeacreasethroughthehandstouchingthefabricintheprocessofwearandstorageBroadlyspeaking,thetypeoffabricpropertiesinlinewiththegeneraldefinitionoftheshapememorymaterial,namely,withacertainoriginalshapeafterdeformationandfixed,underthestimulusofexternalconditionscanautomaticallyreplytotheinitialshapeofthematerial.PTTshapethesensorycharacteristicsofmemoryfabricresemblestheshapememorymetalfiber,mixedfiberfabric,itisusuallycalledshapememoryfabric.Twotissuesfabricweredesignedinthispaper.Moreover,theirmechanicspropertiesweretestedinaccordancewiththenationalstandardtestrequirements,includingofpermeability,gloss,abrasionresistance,rigidflexibleandcreaseflexibility.Finally,analyzeandsummarizethevariousexperimentaldata,andweavetheperformanceofPTTshapememoryfabricanddrawPTTshapememoryfunction。Keywords:PTTmemoryfabric;creaserecovery;memory;rigidandflexible目录前言................................................................................................................................................1第1章绪论.....................................................................................................................................21.1PTT形状记忆织物..................................................................................................................21.1.1形状记忆面料的定义.............................................................................................21.1.2形状记忆机理.........................................................................................................21.2PTT的发展史..........................................................................................................................31.3PTT的市场前景.........................................................................................................................41.4本课题的研究内容....................................................................................................................41.5本课题研究目的和意义............................................................................................................5第2章PTT纤维的结构及性能...................................................................................................62.1PTT纤维的结构.........................................................................................................................62.1.1PTT纤维分子结构..................................................................................................62.1.2PTT纤维的聚集态结构[8].......................................................................................72.2PTT纤维的基本性能..............................................................................................................92.2.1PTT的拉伸力学性能..............................................................................................92.2.2PTT纤维较低的模量............................................................................................102.2.3PTT纤维的低温染色性........................................................................................102.2.4PTT纤维其他性能................................................................................................102.3本章小结..................................................................................................................................11第3章PTT形状记忆织物的设计与上机工艺计算.................................................................123.1织物的设计..............................................................................................................................123.1.1原料的选用...........................................................................................................123.1.2纱线的设计[12]......................................................................................................123.1.3织物结构的设计...................................................................................................133.1.4织物的经纬向密度...............................................................................................133.1.5织物组织图的设计...............................................................................................133.1.6织物的经纬向紧度...............................................................................................143.2织物上机工艺参数设计.....................................................................................................