【作者】 王建南；

【导师】 陈宇岳；

【作者基本信息】 苏州大学 ， 纺织工程， 2002， 硕士

【摘要】 本文主要采用化学方法通过对真丝纤维进行改性，制备了一种差别化微空穴真丝纤维材料。 采用中性盐类物质氯化钙、水的二元体系和氯化钙、水、乙醇的三元体系处理桑蚕丝纤维，柞蚕丝在钙盐中溶解性能与桑蚕丝有差异，本文对柞蚕丝采用中强酸磷酸处理，探讨两种丝纤维的微溶解过程，研究改性后的丝纤维的横截面形态、纵向表面形态、聚集态结构及其力学性能的变化规律。研究结果表明，丝纤维在微溶解的过程中，结晶度降低，断裂强度、断裂伸长率、初始模量均有所下降。 真丝纤维在溶解初期，纤维的原纤、微原纤之间出现了分纤，使改性后的真丝纤维内部微空穴增多，在对真丝纤维服用的力学性能影响不显著的前提下，探索并制定了形成真丝纤维微空穴的最佳工艺条件。通过电镜扫描观测了真丝纤维的微观形态结构，采用锡酸增重和测定丝纤维的吸放湿回潮率等方法，定性地表征了真丝纤维改性前后微空穴的变化规律，研究结果表明，均同样地证实了改性后的真丝纤维的微空穴明显增多。更多还原

【Abstract】 The silk fiber is mostly modified by chemical method in this paper. A kind of specialised microvoid silk material is produced.The mulberry silk is treated by binary system neutral salt CaCl2 and H20 and ternary system CaCl2 H2O and C2H5OH. In the calcium salt there is difference between tussah and mulberry silk. The tussah silk is treated by phosphor acid. The dissolution process of two kind of fiber and the law of the changing of the cross section morphology, lengthways surface morphology, aggregate structure and the mechanical properties are studied in this paper. It is found out during the solution process of the silk fiber, the degree of crystallization decreases and the breaking strength, breaking extension and initial modulus also decrease.On the initial stage of the dissolution of the silk, split fibrillar appears between the fibrillar and micro-fibrillar, which make the number of the microvoids in the fiber increases. On the premises of not evident influence on the wear ability, the best process condition to produce the microvoids in the silk is researched and established. The micromorphology of the silk is observed by the scanning electron microscope. The law of the changing of the microvoids in the silk after deformation is characterized by the stannic acid weighting method and the test of the wet picking and releasing moisture regain. It indicates the microvoids in the real silk fiber increases evidently after the modification.更多还原