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可回收高性能双固化环氧树脂的制备及其电气性能

王浩欢 秦岭 王天兴 史玲娜 吴金锁 文森

王浩欢, 秦岭, 王天兴, 等. 可回收高性能双固化环氧树脂的制备及其电气性能[J]. 复合材料学报, 2024, 42(0): 1-10.
引用本文: 王浩欢, 秦岭, 王天兴, 等. 可回收高性能双固化环氧树脂的制备及其电气性能[J]. 复合材料学报, 2024, 42(0): 1-10.
WANG Haohuan, QIN Ling, WANG Tianxing, et al. Preparation and electrical properties of recyclable high performance dual-curing epoxy resin[J]. Acta Materiae Compositae Sinica.
Citation: WANG Haohuan, QIN Ling, WANG Tianxing, et al. Preparation and electrical properties of recyclable high performance dual-curing epoxy resin[J]. Acta Materiae Compositae Sinica.

可回收高性能双固化环氧树脂的制备及其电气性能

基金项目: 重庆市交通科技项目(2022-02);重庆市技术创新与应用发展专项重点项目(CSTB2022TIAD-KPX0116;CSTB2022TIAD-KPX0117);交通运输行业重点科技项目(2022-ZD3-023)。
详细信息
    通讯作者:

    王浩欢,博士,工程师,研究方向为交能融合方向, E-mail: 20134209@cqu.edu.cn

  • 中图分类号: TB332

Preparation and electrical properties of recyclable high performance dual-curing epoxy resin

Funds: Project supported by Transportation Technology Program of Chongqing Municipal (2022-02); Special Key Program of Technological Innovation and Application Development of Chongqing Municipal (CSTB2022TIAD-KPX0116;CSTB2022TIAD-KPX0117); Key Technology Program in Transportation Industry (2022-ZD3-023).
  • 摘要: 环氧树脂为交通电气化进程提供了优异的绝缘、支撑和保护功能,但传统环氧树脂难以回收,这不符合绿色交通的可持续发展目标。现有可回收环氧树脂综合性能较差,限制了其在交通电气化进程中的应用,亟需开发高性能可回收的环氧树脂。本文提出了光敏油基树脂和环氧树脂的光-热双固化方法,利用酯交换机制,在无催化剂的高温高压环境下实现了双固化环氧树脂的回收,同时回收树脂仍保持出色的理化和电气性能。结果表明:回收前双固化环氧树脂的综合性能良好;回收树脂的粒径越小、热压压强越大,回收后树脂的理化和电气性能越好,在220℃、10 MPa的环境下热压3 h后回收树脂的综合性能最佳,弯曲和拉伸强度恢复率分别为92.0%和93.7%,工频下介电常数和介质损耗与回收前相差不大,击穿强度恢复率达到98.4%。该树脂在推进交通电气化的过程中具有一定潜力和应用前景。

     

  • 图  1  双固化环氧树脂的制备与回收过程

    Figure  1.  Preparation and recovery process of dual-curing epoxy resin

    图  2  L回收颗粒(a)和S回收颗粒(b)的宏观、微观形貌和粒径分布

    Figure  2.  Macro, micro morphology and size distribution of the L (a) and S (b) particles

    图  3  双固化环氧树脂的回收机制

    Figure  3.  Recovery mechanism of dual-curing epoxy resin

    图  4  双固化环氧树脂的热压回收过程

    Figure  4.  Recovery process of dual-curing epoxy resin by hot pressing

    图  5  双固化环氧树脂固化过程(a)与回收过程(b)的FTIR红外光谱及树脂回收后的DSC测试(c)

    Figure  5.  FTIR spectra of dual-curing epoxy resin at different curing stages (a) and before and after recycling (b), DSC of the dual-curing epoxy resins after recycling (c).

    图  6  双固化环氧树脂回收前后弯曲强度(a)和拉伸强度(b)

    Figure  6.  Bending strength (a) and tensile strength (b) of the dual-curing epoxy resin before and after recycling

    图  7  双固化环氧回收树脂断面形貌

    Figure  7.  Sectional morphology of dual-curing epoxy recovery resin

    图  8  双固化环氧树脂回收前后的介电常数

    Figure  8.  Dielectric constant of dual-curing epoxy resin before and after recycling

    图  9  双固化环氧树脂回收前后的介电损耗

    Figure  9.  Dielectric loss of dual-curing epoxy resin before and after recycling

    图  10  双固化环氧树脂回收前后的击穿强度

    Figure  10.  Breakdown voltage of dual-curing epoxy resin before and after recycling

    表  1  拉伸强度文献比较

    Table  1.   The comparison of the tensile strength among the literature

    Bibliographic Citation catalyst Tensile strength/
    MPa
    [16] Yes 12.0
    [17] Yes 10.3
    [18] Yes 9.9
    [19] Yes 28.0
    [22] Yes 7.0
    [23] No 47
    [24] No 41
    [28] Yes 1.6
    [29] Yes 2.0
    This article No 51.0
    下载: 导出CSV

    表  2  介电损耗文献比较

    Table  2.   The comparison of the dielectric loss among the literature

    Bibliographic citationDielectric loss
    before recycling
    Dielectric loss
    after recycling
    [25]0.047/
    [30]0.1250.9
    [31]0.050.055
    [32]0.02/
    This article0.010.015
    下载: 导出CSV
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  • 收稿日期:  2023-10-12
  • 修回日期:  2023-12-18
  • 录用日期:  2023-12-25
  • 网络出版日期:  2024-01-13

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