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共缩聚法制备含芴大侧基无色透明聚酰亚胺薄膜及其性能

韩龙 李静静 窦垚 奚桢浩 郭旭虹 王杰

韩 龙, 李静静, 窦 垚, 等. 共缩聚法制备含芴大侧基无色透明聚酰亚胺薄膜及其性能[J]. 功能高分子学报,2022,35(4):1-7 doi: 10.14133/j.cnki.1008-9357.20210901001
引用本文: 韩 龙, 李静静, 窦 垚, 等. 共缩聚法制备含芴大侧基无色透明聚酰亚胺薄膜及其性能[J]. 功能高分子学报,2022,35(4):1-7 doi: 10.14133/j.cnki.1008-9357.20210901001
HAN Long, LI Jingjing, DOU Yao, XI Zhenhao, GUO Xuhong, WANG Jie. Colorless and Transparent Polyimide Film with Fluorene-Containing Large Side Groups Prepared by Copolycondensation Method[J]. Journal of Functional Polymers. doi: 10.14133/j.cnki.1008-9357.20210901001
Citation: HAN Long, LI Jingjing, DOU Yao, XI Zhenhao, GUO Xuhong, WANG Jie. Colorless and Transparent Polyimide Film with Fluorene-Containing Large Side Groups Prepared by Copolycondensation Method[J]. Journal of Functional Polymers. doi: 10.14133/j.cnki.1008-9357.20210901001

共缩聚法制备含芴大侧基无色透明聚酰亚胺薄膜及其性能

doi: 10.14133/j.cnki.1008-9357.20210901001
基金项目: 国家自然科学基金(51403062)
详细信息
    作者简介:

    韩龙:韩 龙 (1995—),男,硕士研究生,主要从事无色聚酰亚胺薄膜材料的研究。E-mail: 215313062@qq.com

    通讯作者:

    王 杰,E-mail: jiewang2010@ecust.edu.cn

  • 中图分类号: TQ323.7

Colorless and Transparent Polyimide Film with Fluorene-Containing Large Side Groups Prepared by Copolycondensation Method

  • 摘要: 以4,4′-二氨基二苯醚(ODA)和含芴大侧基的9,9-双(3-氟-4-氨基苯基)芴(FFDA)为二胺单体,4,4′-联苯醚二酐(ODPA)为二酐单体,经常温下溶液共缩聚反应得到含FFDA的聚酰胺酸(PAA)溶液,再经化学亚胺化得到无色透明聚酰亚胺(PI)薄膜。使用傅里叶红外光谱(FT-IR)、差示扫描量热(DSC)、热重分析(TGA)、X射线衍射(XRD)分析、紫外-可见分光光度计(UV-Vis)、万能材料试验机等对PI进行了结构及性能表征。结果表明:随着n(FFDA):n(ODPA)的投料比增加,PI的热性能和力学性能均相应提高,当该比例达到50%时,PI的可见光透过率达到85%,且于室温下在常见极性溶剂中的溶解性较好。

     

  • 图  1  PI的合成路线

    Figure  1.  Synthetic route of PI

    图  2  PI薄膜的红外光谱图

    Figure  2.  FT-IR spectra of PI films

    图  3  PI薄膜的TGA曲线

    Figure  3.  TGA curves of PI films

    图  4  PI薄膜的DSC曲线

    Figure  4.  DSC curves of PI films

    图  5  PI薄膜的XRD谱图

    Figure  5.  XRD patterns of PI films

    图  6  PI薄膜的紫外-可见光谱图

    Figure  6.  UV-Vis spectra of PI films

    图  7  PI薄膜光学透过性对比

    Figure  7.  Comparison of optical transmittance of PI films

    表  1  PI的单体投料比

    Table  1.   Monomer feed ratio of PI

    Samplen (ODA) :n (FFDA) :n (ODPA)n(FFDA):n(ODPA)/%
    PI10:0:100
    PI-30%7:3 :1030
    PI-50%5:5:1050
    PI-70%3:7 :1070
    下载: 导出CSV

    表  2  PAA溶液的黏度

    Table  2.   Viscosities of PAA solutions

    Samplet0/st/sηr/(dL·g−1)ηsp/(dL·g−1)[η]/(dL·g-1)
    PI138.24258.511.870.871.41
    PI-30%138.24236.161.710.711.18
    PI-50%138.24210.731.520.520.90
    PI-70%138.24196.671.420.420.75
    t0:The outflow time of solvent; t:The outflow time of solution
    下载: 导出CSV

    表  3  PI的溶解性能

    Table  3.   Solubilities of PI

    SampleDMAcDMFNMPDMSODCMTHF
    PI+−+−+−+
    PI-30%++++++++++++
    PI-50%++++++++++++
    PI-70%++++++++++−
    ++:Soluble at RT; +:Partially soluble at RT; +-:Soluble after heating; -:Partially soluble after heating
    下载: 导出CSV

    表  4  PI薄膜的力学性能

    Table  4.   Mechanical properties of PI films

    SampleTensile strength/MPaTensile modulus/GPaElongation at break/%
    PI112.42.27.8
    PI-30%123.12.48.1
    PI-50%131.62.910.6
    PI-70%143.43.312.3
    下载: 导出CSV
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出版历程
  • 收稿日期:  2021-09-01
  • 录用日期:  2022-02-28
  • 网络出版日期:  2022-03-07

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