UHMWPE复合纱的纺制及性能测试
2021-05-07张洁刘新金
张洁 刘新金



摘要:UHMWPE纤维具有较高的比强度和比模量,但纤维吸湿性差。文章以黏胶短纤维为外包纤维,UHMWPE短纤纱(14.75tex)及长丝(16.67tex)为芯丝分别纺制34tex包芯纱。以黏胶短纤维为中间纤维,UHMWPE短纤纱(14.75tex)及长丝(16.67tex)为包缠纤维分別纺制34tex赛络菲尔纱。通过改变UHMWPE短纤纱或长丝与须条的间距优化赛络菲尔纱的性能,并对成纱性能进行测试和对比分析。结果表明:相同线密度纱线,以UHMWPE长丝为芯丝或包缠纤维所纺的包芯纱和赛络菲尔纱除断裂伸长率外,在强度、条干及毛羽方面均优于以UHMWPE短纤纱为芯丝或包缠纤维所纺的包芯纱和赛络菲尔纱。在纺制赛络菲尔纱时,UHMWPE短纤纱与须条的间距以8mm为较优,UHMWPE长丝与须条的间距以6mm为较优。
关键词:超高分子量聚乙烯复合纱;包芯纱;赛络菲尔纱;纱线强度;纱线条干
中图分类号:TS104.2
文献标志码:A
文章编号:10017003(2021)04002405
Abstract:UHMWPEfiberhashighspecificstrengthandspecificmodulus,butpoormoistureabsorption.Inthepaper,withviscosestaplefiberastheouterfiber,andUHMWPEstaplefiberyarn(14.75tex)andfilament(16.67tex)asthecoreyarn,34texcore-spunyarnwasspun.Withviscosestaplefiberastheintermediatefiber,andUHMWPEstaplefiberyarn(14.75tex)andfilament(16.67tex)aswrappingfiber,34texSirofilyarnwasspun.TheperformanceofSirofilyarnwasoptimizedbychangingthespacingbetweentheUHMWPEstaplefiberyarnorfilamentandthefiberstrand.Theresultsshowedthatforyarnswiththesamelineardensity,exceptforelongationatbreak,core-spunyarnsandSirofilyarnswithUHMWPEfilamentasthecoreyarnorwrappingfiberwerebetterthancore-spunyarnsandSirofilyarnswithUHMWPEstaplefiberyarnasthecoreyarnorwrappingfiberinstrength,evennessandhairiness.WhenSirofilyarnsarespun,thespacingbetweentheUHMWPEstaplefiberyarnandfiberstrandispreferably8mm,andthespacingbetweentheUHMWPEfilamentandfiberstrandispreferably6mm.
Keywords:UHMWPEcompositeyarn;core-spunyarn;Sirofilyarn;yarnstrength;yarnevenness
作者简介:张洁(1997),女,硕士研究生,研究方向为新型纺纱技术。通信作者:刘新金,副教授,liuxinjin2006@163.com。
超高分子量聚乙烯(ultrahighmolecularweightpolyethylene,UHMWPE)作为目前世界上最轻的高性能纤维,具有较高的比强度和比模量,合适的断裂伸长率,较高的结晶度,耐紫外、耐化学腐蚀,比能量吸收高等良好的综合性能,因此被广泛应用于航空航天、防弹抗冲击等领域[1-2]。但UHMWPE纤维吸湿性差,纤维表面光滑,在生产加工中容易产生静电,且产品舒适性能较差。针对这一问题,可以通过改变纱线的结构来进行优化。目前在市场上,UHMWPE纤维产品主要以长丝为主[3-4],短纤纱有少量应用,且短纤纱在树脂复合时体现出较好的树脂浸润性。……
