静电纺复合隔热纳米纤维膜的制备及性能  

Preparation of composite heat insulating nanofiber membrane by electrostatic spinning and its properties

作　　者：余彦婷 杨雅晴 王欣欣 张汉泽 黄锋林 YU Yanting;YANG Yaqing;WANG Xinxin;ZHANG Hanze;HUANG Fengling(Key Laboratory of Eco-Textiles,Ministry of Education,Jiangnan University,Wuxi 214122,Jiangsu,China)

机构地区：[1]江南大学教育部生态纺织品重点实验室,江苏无锡214122

出　　处：《上海纺织科技》2024年第12期82-86,96,共6页Shanghai Textile Science & Technology

基　　金：江苏省重点研发项目(BE2017060)。

摘　　要：采用同轴静电纺丝工艺制备含有不同质量分数二氧化钛中空微球的复合隔热纳米纤维膜,借助扫描电子显微镜和透射电子显微镜观察微球及纤维形貌,分析微球直径及纤维直径的变化原因。隔热性能测试结果显示:添加20%钛酸四丁酯和2 mL氨水得到的微球隔热温差最大,可达4.2 K;添加2%微球进行同轴静电纺丝,纤维膜热阻可达0.0725 m^(2)·K/W。力学性能测试结果表明:随着中空微球含量增加,断裂伸长和断裂强度先增加后减小;当添加量为2%时断裂强力最大,为7.51 MPa。Composite heat-insulating nanofiber membrane containing hollow titania microspheres with different mass fractions is prepared by coaxial electrospinning.The morphologies of the microspheres and fibers are observed by scanning electron microscopy(SEM)and transmission electron microscopy(TEM),and the reasons for the changes in microsphere diameter and fiber diameter are analyzed.The thermal insulation performance test results show that the microspheres obtained by adding 20% tetrabutyl titanate and 2 mL ammonia solution have the highest thermal insulation temperature difference,reaching 4.2 K;By adding 2% microspheres for coaxial electrospinning,the thermal resistance of the fiber membrane can reach 0.0725 m^(2)·K/W.The mechanical performance test results show that as the content of hollow microspheres increases,the fracture elongation and fracture strength first increase and then decrease;When the addition amount is 2%,the maximum breaking strength is 7.51 MPa.

关 键 词：静电纺丝 二氧化钛 纳米纤维膜 中空微球 隔热性能 力学性能 

分 类 号：TQ340.643[化学工程—化纤工业]