【作者】 李杰； 刘洋； 潘志娟；

【Author】 LI Jie~1,LIU Yang~1,PAN Zhi-juan~(1,2) (1.College of Textile and Clothing,Soochow University,Suzhou 215021,China; 2.National Engineering Laboratory for Modern Silk,Soochow University,Suzhou 215123,China)

【机构】 苏州大学纺织与服装工程学院； 苏州大学现代丝绸国家工程实验室；

【摘要】 静电纺丝是目前国内外的研究热点之一,一般通过静电纺丝得到的产品形式基本为无规则的纤维网,而且产品的力学性能较差。以PA6、多壁碳纳米管(MWNTs)为原料,利用改进的静电纺丝技术纺制了连续的碳纳米管增强PA6纳米纤维纱,并对其进行了后拉伸,研究了干、湿拉伸和拉伸倍数对PA6/MWNTs纳米纤维纱的形态和力学性能的影响。结果表明,随着拉伸倍数的增加,纱线和纤维的直径减小,纤维的定向排列程度和结晶度增加,纱线的断裂强度和初始模量增大;湿拉伸的效果比干拉伸好,湿拉伸1.7倍时,断裂强度和初始模量分别为原样的2.64倍和4.20倍,干拉伸最大拉伸倍数1.6倍,断裂强度和初始模量分别为原样的2.47倍和2.35倍。更多还原

【Abstract】 Electrospinning technique is one of the hot topics all over the world,and the main form of the electro-spun product is generally nonwoven fiber mat with poor mechanical properties.Consecutive PA6/MWNTs nanofiber filaments were successfully fabricated by an improved electrospinning method.We post-drawn the asspun yarns and studied the effects of post-drawn ways(wet or dry) and ratios on the structures and mechanical properties.The results show that with the increase of the draw ratio,the diameters of filament and fiber decrease, while the degree of fiber orientation arrangement and crystallinity is obviously improved,the breaking strength and initial modulus of the yarns increase.The effect of wet post-drawn is finer than dry post-drawn,as the maximum wet draw ratio reaches 1.7,the breaking strength and initial modulus of the filament is respectively 2.64 times and 4.2 times as compared to that of the control sample while the maximum dry draw ratio reaches 1.6,the breaking strength and initial modulus of the filament is respectively only 2.47 times and 2.35 times improved.更多还原