纳米粉体改性生物基尼龙56的等温结晶动力学  

Isothermal Crystallization Kinetics of Nano-powder Modified Bio-based Nylon 56

作　　者：王宇[1] 胡红梅 朱瑞淑 钱思琦 段思雨 俞建勇 王学利 刘修才 WANG Yu;HU Hongmei;ZHU Ruishu;QIAN Siqi;DUAN Siyu;YU Jianyong;WANG Xueli;LIU Xiucai(College of Textiles,Donghua University,Shanghai 201620,China;Innovation Center for Textile Science and Technology,Donghua University,Shanghai 201620,China;Shanghai Cathay Biological Science and Technology Center Company,Shanghai 201620,China)

机构地区：[1]东华大学纺织学院,上海201620 [2]东华大学纺织科技创新中心,上海201620 [3]上海凯赛生物科技研发中心有限公司,上海201620

出　　处：《东华大学学报（自然科学版）》2020年第5期703-711,共9页Journal of Donghua University(Natural Science)

基　　金：国家重点研发计划资助项目(2017YFB0309400)。

摘　　要：采用纳米SiO2、TiO2、Al2O3和ZrO2对生物基尼龙56材料进行改性,利用差示扫描量热仪和偏光显微镜对改性后的生物基尼龙56材料的等温结晶性能进行研究,采用Avrami方程对其等温结晶过程及其动力学进行分析。选用不同纳米SiO2添加量的改性生物基尼龙56材料进行纺丝,并测试所纺长丝的力学性能及沸水收缩率。结果表明:得到的Avrami指数均为2~3,表明纳米粉体的加入并未改变尼龙56的成核机理,偏光显微镜的形貌表征结果也可证实这点;纳米粉体的加入使得生物基尼龙56的半结晶时间t 1/2有所减小、结晶速率有所提高,其中纳米SiO2对提高生物基尼龙56的结晶速率最为有效;纳米SiO2改性生物基尼龙56长丝的力学性能仍处于正常服用尼龙纤维制品范围内,而长丝的沸水收缩率则明显减小。The bio-based nylon 56 material was modified by nano-SiO 2,TiO 2,Al 2O 3 and ZrO 2 respectively.The isothermal crystallization properties of the modified bio-based nylon 56 material were studied by differential scanning calorimetry and polarizing microscope.The isothermal crystallization process and its kinetics of the modified material were analyzed by Avrami equation.The modified bio-based nylon 56 materials with different addition amount of nano-SiO 2 were used for spinning,and the mechanical properties and shrinkage of boiling water of the filament were tested.The results show that the value of the Avrami exponent ranging between 2 and 3,indicating that the addition of nano-powder does not change the nucleation mechanism of nylon 56,and it is verified by the polarizing microscope observation results.The addition of nano-powder shortens the half-crystallization time t 1/2 of bio-based nylon 56,and increases the crystallization speed.Among the four kinds of nano-powders,the nano-SiO 2 is the most effective.The mechanical properties of nano-SiO 2 modified bio-based nylon 56 filament are still in the range of normal nylon fiber products,while the boiling water shrinkage of the filament is significantly reduced.

关 键 词：生物基尼龙56 纳米粉体 非等温结晶 结晶动力学 沸水收缩率 

分 类 号：TS174.3[轻工技术与工程—纺织材料与纺织品设计]