基于接收温度调控的TPU熔体静电直写可控沉积  

Controllable Deposition of TPU Melt Electrowriting Based on Temperature Controlling of the Collector

作　　者：李好义[1,2] 贾紫初 徐锦龙 杨卫民[1,2] 谭晶[2] LI Haoyi;JIA Zichu;XU Jinlong;YANG Weimin;TAN Jing(State Key Laboratory of Organic-Inorganic Composites,Beijing University of Chemical Technology,Beijing 100029,China;College of Mechanical and Electrical Engineering,Beijing University of Chemical Technology,Beijing 100029,China;Jiangsu New Vision Advanced Functional Fiber Innovation Center Co.,Ltd.,Suzhou,Jiangsu 215228,China)

机构地区：[1]北京化工大学有机无机复合材料国家重点实验室,北京100029 [2]北京化工大学机电工程学院,北京100029 [3]江苏新视界先进功能纤维创新中心有限公司,江苏苏州215228

出　　处：《塑料》2023年第5期140-144,共5页Plastics

基　　金：北京化工大学有机无机复合材料国家重点实验室开放课题(oic-202201005)。

摘　　要：通过调控接收板温度,实现了热塑性聚氨酯材料的熔体静电直写制备。通过模拟发现,当纺丝距离为5 mm时,接收板温度升高后,纺丝区间内温度呈线性提高,有利于减缓射流的冷却速度。通过实验探究了不同接收板温度对熔体静电直写制备热塑性聚氨酯材料纤维直径、形貌、沉积精度以及三维网格形貌的影响。实验表明,当接收板温度为80℃时,平均纤维直径与40℃时相比,降低了27.7%;当接收板温度100℃时,纤维沉积误差与60℃时相比,降低了46.8%;当接收板温度为80~100℃时,能够制备稳定的三维纤维结构;当接收板温度为120℃时,射流无法凝固为纤维。The melt electrowriting preparation of thermoplastic polyurethane material was realized by heating the receiver plate.Through the simulation,it was found that when the spinning distance was 5 mm,after the temperature of the receiving plate increases,the temperature in the spinning area increased linearly,which was beneficial to slow down the cooling rate of the jet.The effects of the receiver plate temperature on the fiber diameter,fiber morphology,deposition accuracy and fiber mesh deposition morphology of TPU prepared by melt electrowriting were investigated by experiments.The experiment found that the average fiber diameter decreased by 27.7%when the receiving plate temperature was 80℃compared with that at 40℃;the fiber deposition error decreased by 46.8%when the receiving plate temperature was 100℃compared with 60℃;when the receiving plate temperature was 80~100℃,the multi-layer fiber structure could be prepared;when the temperature of the receiving plate was 120℃,the jet cannot solidify into fibers.

关 键 词：热塑性聚氨酯 熔体静电直写 静电纺丝 聚合物纤维 纤维支架 

分 类 号：TQ323.8[化学工程—合成树脂塑料工业] TP391.7[自动化与计算机技术—计算机应用技术]