Synthesis and Characterization of Hydroxyl-terminated Block Fluorinated Copolyether(FPO-PTHF-FPO)  

作　　者：LIU Yan LIU Huihui ZHANG Tao ZHU Qing LI Houbin 刘燕;LIU Huihui;ZHANG Tao;ZHU Qing;黎厚斌(School of Printing and Packing,Wuhan University,Wuhan 430072,China;Institute of Chemical Materials,China Academy of Engineering Physics,Mianyang 621000,China)

机构地区：[1]School of Printing and Packing,Wuhan University,Wuhan 430072,China [2]Institute of Chemical Materials,China Academy of Engineering Physics,Mianyang 621000,China

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2022年第2期285-291,共7页武汉理工大学学报（材料科学英文版）

基　　金：Funded by the National Natural Science Associate Foundation(NSAF)of China(No.U1830127)。

摘　　要：We introduced fluorine into hydroxyl-terminated block copolyether so as to prepare polyurethane adhesive with better performance.Fluorine-containing epoxy compounds(FO)was synthesized by one-step method from 2,2,3,3-tetrafluoro-1-propanol(TFP)and epichlorohydrin(ECH).Then,a novel hydroxyl-terminated block fluorinated copolyether(FPO-PTHF-FPO)was prepared by cationic ring-opening polymerization of fluorinated epoxy compound(FO)with polytetrahydrofuran(PTHF)as the macromolecular initiator and boron trifluoride diethyl ether(BF_(3)·OEt_(2))as the catalyst.The structure and properties of hydroxyl-terminated block fluorinated copolyether were characterized by FTIR,^(1)HNMR,GPC,DSC,TGA,and viscosity-temperature curve analysis.In comparison with polytetrahydrofuran(PTHF),hydroxyl-terminated block fluorinated copolyether(FPO-PTHF-FPO)has lower viscosity and only one lower glass transition temperature(-66.6℃)on DSC curve.In addition,hydroxyl-terminated block fluorinated copolyether(FPO-PTHF-FPO)begins to decompose at 187.2℃and is completely decomposed until 431.6℃,which indicates that it has a good thermal stability.

关 键 词：POLYTETRAHYDROFURAN fluoride-containing hydroxyl-terminated block copolyether cationic ring-opening polymerization 

分 类 号：TQ560.4[化学工程—炸药化工] TQ430.4