4纺织报告|FANGZHIBAOGAO1概述氨纶具有断裂伸长率大、弹性回复率高等优点,主要应用在圆机、包纱、经编等领域,后道在袜子、内衣、泳衣、运动面料等方面应用广泛[1-2]。随着生产技术的日益完善,氨纶市场不断扩大,下游客户对氨纶丝断裂强度、断裂伸长率、张力均一性的要求也不断提高,需要满足高密针、与超细硬纱交织、布面无条纹、织造无断丝的要求。纺丝甬道是氨纶丝生产的重要部分,一般由上入口、上出口和下出口组成,其对氨纶丝成型、溶剂挥发回收起到至关重要的作用,因此对甬道侧吹风的流速、均一性要求较高,否则会造成断裂伸长、拉伸应力、回弹等不良,导致布面出现断点、条干等问题[3-4]。本研究通过改变纺丝甬道上入口风窗高度,在保证入口风量、风速不变的情况下,重点研究了风窗高度对氨纶丝力学性能和张力均纺丝甬道风窗高度对氨纶丝性能影响的探究杨森,张磊(连云港杜钟新奥神氨纶有限公司,江苏连云港222000)ExplorationontheinfluenceofspinningtunnelwindwindowheightontheperformanceofspandexwireYangSen,ZhangLei(LianyungangLDZNewAoshenSpandexCo.Ltd.,Lianyungang222000,China)AbstractInthispaper,threegroupsofspandexfiberswerepreparedbychangingtheheightofthetunnelupperentrancewindwindow,andtheirmechanicalpropertiesandtensionuniformityweretestedandcharacterized.Thetestresultsshowthatundertheconditionthattheentrancewindvolumeandflowratearenotchanged,withtheincreaseoftheheightofthewindwindow,theelongationatbreakofthespandexfiberincreasesgradually,thebreakingstrengthdecreasesgradually,andthetensiondifferencedecreasesfirstandthenincreases.Thetensionofthewirethreadatbothendsofthetunnelfluctuatesgreatly,andthetensionofthewirethreadinthemiddleofthetunnelfluctuatesslightly.Thestabilityofthetensionofthespandexyarnattheinletsideishigherthanthatattheoutletside.Keywordstunnelwindwindowheight;tensionuniformity;mechanicalproperties摘要文章通过改变甬道上入口风窗高度制备了3组氨纶丝,并对其力学性能和张力均一性进行检测和表征。测试结果表明:在保证入口风量、流速不变的情况下,随着风窗高度的增加,氨纶丝的断裂伸长率逐渐增大、断裂强度逐渐减小,张力差异先减小后增大;甬道两端丝线的张力波动较大,甬道中间丝线的张力波动较小,进风侧氨纶丝张力的稳...