晶态结构对聚酯纤维黑度的影响  

Influence of Crystalline Structure of Polyester on Its Blackness

作　　者：曹敏 陆未谷[1] 潘丹[1] 孙俊芬[1] 陈龙[1] Min Cao;Weigu Lu;Dan Pan;Junfen Sun;Long Chen(College of Materials Science and Engineering,State Key Laboratory for Modification of Chemical Fibers and Polymer Materials,Donghua University, Shanghai 201620,China)

机构地区：[1]东华大学材料科学与工程学院纤维材料改性国家重点实验室,上海201620

出　　处：《高分子材料科学与工程》2020年第2期98-104,共7页Polymer Materials Science & Engineering

基　　金：中国化学纤维工业协会绿宇基金项目;国家重点研发项目(2016YFB0302602)。

摘　　要：由于纤维晶区与非晶区具有不同的折光率,晶态结构对炭黑聚酯纤维黑度有很大影响。文中采用纺丝拉伸一步法工艺制备了不同晶态结构的全拉伸(FDY)聚酯纤维,探讨了纤维内部晶粒个数与界面数对纤维黑度的影响。结果表明,随着纤维内部晶粒数的增加,晶粒晶区与非晶区界面数随之增加,进入纤维内部的可见光发生多次反射、散射等相互作用,增加了透射出来的光线在纤维内部所经过的光程,造成更多的光线被吸收衰减,使得聚酯纤维吸光度呈指数倍增加,纤维黑度明显提高。黑色聚酯纤维生产中,可以通过调节工艺来调控纤维晶态结构,达到调控聚酯纤维黑度的要求。Due to the different refractive rates in the fiber crystal area and the amorphous area, the crystalline structure has a great influence on the blackness of polyester fibers. In this paper, FDY polyester fibers with different crystal structure were prepared by one step spinning drawing process. Results show that with the increase of fiber internal crystalline grain number, the interfaces between crystalline area and amorphous area increase, which will cause more frequent interactions such as emission and scattering due to the increase of reflection interfaces, thus increasing light path and causing more light to be absorbed and attenuated. As a result, the polyester fiber absorbance increases exponentially, the fiber blackness becomes deeper. During the black polyester fiber production, company can regulate and control the fiber internal crystalline structure through controlling the spinning process to meet the requirements of regulating the blackness of polyester fibers.

关 键 词：黑度 聚酯纤维 晶态结构 界面数 

分 类 号：TQ324.2[化学工程—合成树脂塑料工业]