江西建材试验与研究·12·2023年6月固态牵伸工艺对UHMWPE纤维性能的影响揭晓东1，丁金友2*，张建强1，柴天红1，霍书怀21.江西省建材科研设计院有限公司，江西南昌330001；2.中国纺织科学研究院有限公司，北京100020摘要：文中采用凝胶纺丝法，以十氢萘为溶剂，制备得到两种干态超高分子量聚乙烯纤维原丝，在后续的固态牵伸（多级牵伸）阶段，系统研究了牵伸倍率、牵伸温度及倍率分配对纤维力学性能的影响。结果表明：牵伸温度与牵伸倍率适配时，较高的牵伸倍率有利于得到更高性能的纤维，制得的纤维强度最高为39.3cN/dtex，模量最高为1570cN/dtex；在相同牵伸倍率及分配的情况下，相比于强度，弹性模量对工艺的变化更敏感，在一定范围内提高温度，纤维模量会下降；在相同总牵伸倍率的情况下，牵伸倍率较大的分配差异更有利于获得高性能纤维。关键词：超高分子量聚乙烯纤维；固态牵伸工艺；力学性能中图分类号：TQ342文献标识码：A文章编号：1006-2890（2023）06-0012-03EffectofSolid-stateDraftingProcessonPropertiesofUHMWPEFibersJieXiaodong1,DingJinyou2*,ZhangJianqiang1,ChaiTianhong1,HuoShuhuai21.JiangxiBuildingMaterialsResearchandDesignInstituteCo.Ltd,Nanchang,Jiangxi330001；2.ChinaTextileAcademy,Beijing100020Abstract:Inthispaper,twokindsofdryultra-highmolecularweightpolyethylenerawfiberswerepreparedbygelspinningmethodwithdecalinassolvent.Inthesubsequentsolid-statedrafting（multistagedrafting）stage,theeffectsofdraw-downratio,temperature,andratiodistributiononthemechanicalpropertiesofthefibersweresystematicallystudied.Theresultsshowthatwhenthedraftingtemperatureissuitableforthedraw-downratio,thehigherdraftingratioisbeneficialtoobtainthefiberwithhigherperformance.Thefiberstrengthandmodulusareupto39.3cN/dtexand1570cN/dtexrespectively.Comparedwiththestrength,theYoung'smodulusismoresensitivetothechangeofprocessunderthesamedraftingratioanddistribution.Thefibermoduluswilldecreasewhenthetemperatureisincreasedwithinacertainrange.Inthecaseofthesametotaldraw-downratio,thelargerdistributionofdraftratioismorebeneficialtoobtainhigh-performancefiber.Keywords:Ultra-highmolecularweightpolyethylenefiber;Solidstatedraftingprocess;Mechanicalproperty0引言...
