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    伍慧雯, 李华, 康红梅, 刘河洲. 6FDA型聚酰亚胺的合成及其分子量调控[J]. 功能高分子学报, 2012, 25(2).
    引用本文: 伍慧雯, 李华, 康红梅, 刘河洲. 6FDA型聚酰亚胺的合成及其分子量调控[J]. 功能高分子学报, 2012, 25(2).
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    WU Huiwen, LI Hua, KANG Hongmei, LIU Hezhou. Synthesis and Control of Molecular Weight of Fluorinated Polyimide Based on 4, 4′-(Hexafluoroisopropylidene)diphthalic Anhydride[J]. Journal of Functional Polymers, 2012, 25(2).
    Citation: WU Huiwen, LI Hua, KANG Hongmei, LIU Hezhou. Synthesis and Control of Molecular Weight of Fluorinated Polyimide Based on 4, 4′-(Hexafluoroisopropylidene)diphthalic Anhydride[J]. Journal of Functional Polymers, 2012, 25(2).
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    6FDA型聚酰亚胺的合成及其分子量调控

    Synthesis and Control of Molecular Weight of Fluorinated Polyimide Based on 4, 4′-(Hexafluoroisopropylidene)diphthalic Anhydride

      摘要
    • 摘要: 以4，4′-(六氟异丙烯)二酞酸酐(6FDA)为二酐单体，2，2双(3-胺基-4-羟基苯)六氟丙烷为二胺单体，采用“溶液缩聚亚胺化反应”两步合成法，获得了可溶性聚酰亚胺材料。通过傅里叶变换红外光谱 (FT-IR)、凝胶色谱(GPC)、热重分析(TGA)、X射线衍射(XRD)等分析测试，考察了原料配比、亚胺化温度、亚胺化时间及催化剂等因素对产物重均分子量等特性参量的影响。结果表明：通过调节合成条件，该聚酰亚胺重均分子量可达4.5×104，具有优良的热稳定性，其起始分解温度高于490 °C，且在NMP、DMF、DMAc、DMSO、THF、丙酮等有机溶剂中具有优良的溶解性能，能于80 °C的低温下亚胺化制得，对材料的大批量制备具有重要意义。

       

      Abstract: 4,4′(Hexafluoroisopropylidene)diphthalic anhydride (6FDA) was polymerized with 2, 2bis (3amino4hydroxyphenyl) hexafluoropropane (BAPAF). Fluorinated polyimide was obtained via a twostep polycondensaion procedure. The effect of reaction factors like raw materials′ ratio, imidization temperature, imidization time and catalyst on the molecular weight were studied. Polyimide was characterized by FTIR, GPC, XRD and solubility test. Results showed that polyimide of 6FDABAPAF obtained under imidization temperature (80 °C) had high molecular weight reaching 4.5×104, which displayed excellent thermal properties with Td higher than 490 °C and had excellent solubility in polar aprotic organic solvents such as NMP, DMF, DMAc, DMSO, THF and acetone.

       

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