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碳纳米管喷涂层增韧玻璃纤维/环氧树脂基复合材料的制备与增韧机制

赵红晨 欧云福 吴龙强 茅东升

赵红晨, 欧云福, 吴龙强, 等. 碳纳米管喷涂层增韧玻璃纤维/环氧树脂基复合材料的制备与增韧机制[J]. 复合材料学报, 2024, 41(5): 2364-2373. doi: 10.13801/j.cnki.fhclxb.20230922.001
引用本文: 赵红晨, 欧云福, 吴龙强, 等. 碳纳米管喷涂层增韧玻璃纤维/环氧树脂基复合材料的制备与增韧机制[J]. 复合材料学报, 2024, 41(5): 2364-2373. doi: 10.13801/j.cnki.fhclxb.20230922.001
ZHAO Hongchen, OU Yunfu, WU Longqiang, et al. Preparation and toughening mechanism of glass fiber/epoxy composites toughened by carbon nanotube sprayed layers[J]. Acta Materiae Compositae Sinica, 2024, 41(5): 2364-2373. doi: 10.13801/j.cnki.fhclxb.20230922.001
Citation: ZHAO Hongchen, OU Yunfu, WU Longqiang, et al. Preparation and toughening mechanism of glass fiber/epoxy composites toughened by carbon nanotube sprayed layers[J]. Acta Materiae Compositae Sinica, 2024, 41(5): 2364-2373. doi: 10.13801/j.cnki.fhclxb.20230922.001

碳纳米管喷涂层增韧玻璃纤维/环氧树脂基复合材料的制备与增韧机制

doi: 10.13801/j.cnki.fhclxb.20230922.001
基金项目: 宁波市自然科学基金(2021J208);中国博士后科学基金(2022M713241);中科院“百人计划”(2021R01005);宁波市“甬江引才工程”(2021A-045-C)
详细信息
    通讯作者:

    欧云福,博士,助理研究员,研究方向为复合材料增强与增韧  E-mail: ouyunfu@nimte.ac.cn

    茅东升,博士,研究员,研究方向纳米增强复合材料  E-mail: maodongsheng@nimte.ac.cn

  • 中图分类号: TB332

Preparation and toughening mechanism of glass fiber/epoxy composites toughened by carbon nanotube sprayed layers

Funds: Natural Science Foundation of Ningbo (2021J208); Fellowship of China Postdoctoral Science Foundation (2022M713241); "One Hundred Talented People" of the Chinese Academy of Sciences (2021R01005); Ningbo Yongjiang Talent Introduction Program (2021A-045-C)
  • 摘要: 玻璃纤维增强树脂基复合板(GFRP)由于价格便宜、力学性能优异、耐疲劳等优点,广泛应用于风电叶片、运动器材等领域。但是上浆剂和树脂间的不良配合易导致层间分层破坏。本文通过在玻璃纤维织物表面喷涂碳纳米管(CNT)喷涂层,在不破坏面内性能的情况下,使双酚F型和双酚A型环氧树脂基体的玻璃纤维/树脂复合材料的层间I型断裂韧性分别提高了71.7%和23.4%。结果表明:CNT-丙酮分散液喷涂工艺在玻璃纤维上稳定地负载了CNT,成功改变了玻璃纤维表面形态,并通过机械锁合、拔出耗能、延长裂纹扩展路线和触发纤维桥接等机制,成功对不同树脂基体的GFRP实现增韧。

     

  • 图  1  碳纳米管(CNT)喷涂层及增韧玻璃纤维增强树脂基复合材料(GFRP)板材制备过程

    Figure  1.  Preparation process of carbon nanotube (CNT) spray coating toughened glass fiber reinforced plastic (GFRP) sheet

    图  2  双悬臂梁试样测试示意图

    Figure  2.  Schematic diagram of double cantilever beam specimen testing

    图  3  ((a), (b)) CNT-丙酮改性前后玻璃纤维(GF)的表面元素;(c) CNT-丙酮改性前后GF的表面粗糙度(Ra)变化;(d) CNT/水分散和CNT-丙酮分散液超声前后状态;(e) CNT在GF表面的状态

    Figure  3.  ((a), (b)) Surface elements of glass fiber (GF) before and after CNT/acetone modification; (c) Surface roughness (Ra) changes of GF before and after CNT/acetone modification; (d) State of CNT/water dispersion and CNT/acetone dispersion before and after ultrasound; (e) State of CNT on GF surface

    图  4  不同树脂基体的CNT/GFRP的I型层间断裂韧性测试过程与结果:(a) I型层间断裂韧性测试过程;((b), (c)) A-Baseline和A-CNT的I型断裂韧性力-位移曲线及R曲线;(d) 两种树脂复合材料I型层间断裂韧性扩展值对比;((e), (f)) F-Baseline和F-CNT的I型断裂韧性力-位移曲线及R曲线

    GIc—Mode I interlaminar fracture toughness propagation value

    Figure  4.  Mode I testing process and results of CNT/GFRP with different resin matrices: (a) Process of mode I interlaminar fracture toughness testing;((b), (c)) A-Baseline and A-CNT mode I fracture toughness force-displacement curves and R-curves; (d) Comparison of the results of mode I interlaminar fracture toughness extension for two resin composite materials; ((e), (f)) Force-displacement curves andR-curves of F-Baseline and F-CNT mode I fracture toughness

    图  5  引入CNT前后复合材料层间裂面状态和力-位移曲线

    Figure  5.  State of interlayer crack surface and force-displacement curves of composite materials before and after the introduction of CNT

    图  6  A-Baseline、A-CNT、F-Baseline、F-CNT这4种样品的Ⅰ型裂纹扩展的超景深显微镜图像

    Figure  6.  Super-depth microscopic images of mode I crack propagation in four samples of A-Baseline, A-CNT, F-Baseline and F-CNT

    The yellow arrow indicates the location where the crack is relatively smooth; The red arrow indicates the location wherefiber nesting bridging may occur

    图  7  双酚F环氧树脂基体GFRP的Ⅰ型断裂侧面形态:(a) F-Baseline层间光滑脱粘;(b) F-CNT层间的纤维桥接;(c) F-CNT样品的分层和“桥接”

    Figure  7.  Type I fracture profile of bisphenol F epoxy resin matrix GFRP: (a) F-Baseline smooth inter layer debonding;(b) Fiber bridging between F-CNT interlayers; (c) Layering and "bridging" of F-CNT samples

    图  8  A-Baseline、A-CNT、F-Baseline、F-CNT这4种样品的I型断裂面的SEM图像

    Figure  8.  SEM images of mode I fracture surfaces of A-Baseline, A-CNT, F-Baseline and F-CNT samples

    表  1  样品标记

    Table  1.   Sample marking

    Resin matrix With or without CNT Abbreviation
    Bisphenol A type epoxy resin and curing agent (R0221A+R0221B) A-Baseline
    Bisphenol A type epoxy resin and curing agent (R0221A+R0221B) CNT A-CNT
    Bisphenol F type epoxy resin and curing agent (Epon862+D230) F-Baseline
    Bisphenol F type epoxy resin and curing agent (Epon862+D230) CNT F-CNT
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出版历程
  • 收稿日期:  2023-07-07
  • 修回日期:  2023-08-30
  • 录用日期:  2023-09-08
  • 网络出版日期:  2023-09-25
  • 刊出日期:  2024-05-01

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