不同结构聚四氟乙烯微纳米纤维的制备  

Preparation of PTFE micro-nano fibers with different structures

作　　者：王安拓 李祥龙[1] 侯腾[1] 周静 杨斌[1] WANG Antuo;LI Xianglong;HOU Teng;ZHOU Jing;YANG Bin(College of Textile Science and Engineering(International Institute of Silk),Zhejiang Sci-Tech University,Hangzhou 310018,China)

机构地区：[1]浙江理工大学纺织科学与工程学院(国际丝绸学院),杭州310018

出　　处：《浙江理工大学学报（自然科学版）》2021年第6期758-762,共5页Journal of Zhejiang Sci-Tech University(Natural Sciences)

基　　金：浙江省自然科学基金项目(LQ21E030011,LY21E030021)。

摘　　要：为实现聚四氟乙烯(PTFE)微纳米纤维结构的多样化、解决纤维形貌单一的问题,以聚环氧乙烯(PEO)或聚乙烯吡咯烷酮(PVP)作为载体黏合剂,与PTFE乳液混合配置纺丝液,利用静电-离心纺丝技术制备PEO/PTFE及PVP/PTFE初生纤维,分析纺丝液溶质比和纺丝液浓度对初生纤维可纺性的影响,并通过不同的后处理方式制备PTFE微纳米纤维。结果表明:当PEO/PTFE溶质比为6∶94,PVP/PTFE质量比为35∶65时,可纺出形貌较好的初生纤维,且初生纤维直径随纺丝液浓度的降低而减小;通过高温煅烧及乙醇浸渍的方法进行后处理,可以成功制备光滑表面、微球结构以及多孔结构PTFE微纳米纤维。研究结果为纤维微结构的开发提供了新思路。In order to implement the diversification of polytetrafluoroethylene(PTFE)micro-nano fiber structure and solve the problem of single fiber morphology,polyethylene oxide(PEO)or polyvinylpyrrolidone(PVP)as a carrier adhesive was mixed with PTFE emulsion to prepare the spinning solution.The PEO/PTFE and PVP/PTFE precursor fibers were prepared by electrostatic-centrifugal spinning method.The effect of solute ratio and concentration of the spinning solution on the spinnability of precursor fibers was researched.Besides,PTFE micro-nano fibers were prepared by different postprocessing methods.The result showed that the precursor fiber with a good morphology when the solute ratio of PEO/PTFE was 6∶94and the mass ratio of PVP/PTFE was 35∶65.The diameter of precursor fibers decreased with the decrease of spinning solution concentration.The PTFE micro-nano fibers with smooth surface,microsphere structure and porous structure were successfully prepared by hightemperature calcination and ethyl alcohol impregnation technology.This result provides a new idea for the development of fiber microstructure in the future.

关 键 词：聚四氟乙烯 静电-离心纺丝 微纳米纤维 可纺性 结构多样化 

分 类 号：TS340.64[轻工技术与工程]