刘森林,闫婷伟,南建举,于金超,张玉梅
LIU Sen-lin,YAN Ting-wei,NAN Jian-ju,YU Jin-chao,ZHANG Yu-mei

• 1:上海益弹新材料有限公司
• 2:东华大学纤维材料改性国家重点实验室

摘要(Abstract)：

为了说明聚醚酯纤维的形态结构与性能的对应关系,选择不同软硬段含量的聚醚酯切片进行熔融纺丝试验。结果发现:随着硬段含量的增加,纤维的断裂强度增大,但回弹性降低;当硬段质量分数为65%时,纤维的断裂强度为1.12 cN/dtex,而回弹性降至50%左右。通过广角X射线散射、小角X射线散射以及双折射、声速取向等试验进一步分析了不同软硬段含量的聚醚酯纤维的形态结构变化,发现在硬段含量高的聚醚酯纤维内部有利于形成较高的取向结构,有助于纤维强度的提升;然而,此时纤维内形成较小尺寸的结晶结构分散于无定形区内,相分离程度低,致使其回弹性降低。
In order to illustrate the relationship between the structures and properties of polyether-ester fi-bers with various soft/hard segment contents, the melt-spinning experious were carried out. It was foundthat the tenacity of the fibers increased with the increase of the hard segment content, while the elastic re-covery decreased. The tenacity could be arrived at 1.12 cN/dtex with the hard segment content of 65% andthe elastic recovery was about 50%. While using different length scale characterization, including wide-an-gle X-ray scattering, small-angle X-ray scattering, birefringence and velocity test, the structures of poly-ether-ester fibers with various soft/hard segment contents were also studied. It was found that higher orien-tation structure tended to be formed with the fibers at larger hard segment contents, which contributed tothe improvement of the tenacity of the fibers. In this case, the crystal structure with smaller size dispersedin the amorphous region and the degree of phase separation was found to be lower, which led to a poor elas-tic recovery.

关键词(KeyWords)： 聚醚酯纤维;硬段;软段;结构;性能
polyether-ester fiber;hard segment;soft segment;structure;property

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 刘森林,闫婷伟,南建举,于金超,张玉梅
LIU Sen-lin,YAN Ting-wei,NAN Jian-ju,YU Jin-chao,ZHANG Yu-mei

DOI: 10.16090/j.cnki.hcxw.2017.11.001

参考文献(References)：

• [1]ABHIRAMAN AS,KIM YW,WAGENER KB.Evolution of structure and properties in fiber formation from a thermoplastic polyester-polyether segmented copolymer[J].Journal of Polymer Science Part B:Polymer Physics,1987,25(1):205-228.
• [2]夏禾,杨晓田,金剑,等.聚醚酯弹性体纺丝工艺的研究(三)[J].纺织科学研究,1995(1):36-39.
• [3]陈吉,潘红霞,李光,等.聚醚酯弹性纤维加工及性能[J].合成纤维工业,2002,25(4):20-23.
• [4]闫婷伟,于金超,张玉梅,等.不同纺丝速度下聚醚酯纤维结构与性能的关系[J].合成纤维,2016,45(4):5-10.
• [5]兰建武,吴大诚,杨大令,等.热定型对嵌段聚醚酯弹性纤维结构与性能的影响[J].合成纤维工业,2002,25(1):12-15.
• [6]YAN T,YAO Y,JIN H,et al.Elastic response of copolyether-ester fiber on its phase morphology under different heat-treatment condition[J].Journal of Polymer Research,2016,23(11):226.
• [7]RICHESON GC,SPRUIELL JE.Preparation,structure,and properties of copolyester-ether elastic filaments[J].Journal of Applied Polymer Science,1990,41(3-4):845-875.
• [8]于金超,王锐,杨春雷,等.梯度热拉伸共聚芳砜酰胺纤维的结构与性能[J].合成纤维工业,2014,37(2):1-5.
• [9]RAN S,FANG D,ZONG X,et al.Structural changes during deformation of Kevlar fibers via on-line synchrotron SAXS/WAXD techniques[J].Polymer,2001,42(4):1601-1612.
• [10]CHE J,LOCKER CR,LEE S,et al.Plastic deformation of semicrystalline polyethylene by X-ray scattering:Comparison with atomistic simulations[J].Macromolecules,2013,46(13):5279-5289.
• [11]YU JC,WANG R,YANG CL,et al.Morphology and structure changes of aromatic copolysulfonamide fibers heat-drawn at various temperatures[J].Polymer International,2014,63(12):2084-2090.
• [12]MURTHY NS,GRUBB DT,ZERO K.Structural implications of the elliptical form of small-angle reflections in oriented semicrystalline polymers[J].Macromolecules,2000,33(3):1012-1021.
• [13]MURTHY NS,GRUBB DT.Tilted lamellae in an affinely deformed3Dmacrolattice and elliptical features in small-angle scattering[J].Journal of Polymer Science Part B Polymer Physics,2006,44(8):1277-1286.