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热塑性颗粒-无机粒子协同增韧碳纤维增强环氧树脂复合材料

刘新 陈铎 何辉永 孙涛 武湛君

刘新, 陈铎, 何辉永, 等. 热塑性颗粒-无机粒子协同增韧碳纤维增强环氧树脂复合材料[J]. 复合材料学报, 2020, 37(8): 1904-1910 doi:  10.13801/j.cnki.fhclxb.20191113.006
引用本文: 刘新, 陈铎, 何辉永, 等. 热塑性颗粒-无机粒子协同增韧碳纤维增强环氧树脂复合材料[J]. 复合材料学报, 2020, 37(8): 1904-1910 doi:  10.13801/j.cnki.fhclxb.20191113.006
Xin LIU, Duo CHEN, Huiyong HE, Tao SUN, Zhanjun WU. Synergistic toughening of thermoplastic particles-inorganic particles to carbon fiber reinforced epoxy resin composites[J]. Acta Materiae Compositae Sinica, 2020, 37(8): 1904-1910. doi: 10.13801/j.cnki.fhclxb.20191113.006
Citation: Xin LIU, Duo CHEN, Huiyong HE, Tao SUN, Zhanjun WU. Synergistic toughening of thermoplastic particles-inorganic particles to carbon fiber reinforced epoxy resin composites[J]. Acta Materiae Compositae Sinica, 2020, 37(8): 1904-1910. doi: 10.13801/j.cnki.fhclxb.20191113.006

热塑性颗粒-无机粒子协同增韧碳纤维增强环氧树脂复合材料

doi: 10.13801/j.cnki.fhclxb.20191113.006
详细信息
    通讯作者:

    刘新,博士,副教授,硕士生导师,研究方向为高性能树脂基复合材料 E-mail:liuxindlut@dlut.edu.cn

  • 中图分类号: TB332

Synergistic toughening of thermoplastic particles-inorganic particles to carbon fiber reinforced epoxy resin composites

  • 摘要: 针对碳纤维增强环氧树脂(CF/EP)复合材料层间断裂韧性进行研究,通过在CF/EP复合材料层间添加四种无机纳米粒子和三种热塑性颗粒对其进行II型层间断裂韧性(GIIC)研究,选择工艺性和增韧性效果好的两种无机纳米粒子和热塑性颗粒进行协同增韧研究。结果表明,CF/EP复合材料的GIIC在适当的无机纳米粒子含量下都得到提高,这主要是由于无机纳米粒子在层间形成了有效吸收断裂能的微结构,纳米羟基氧化铝(AlOOH)的工艺性及增韧性等综合性能最好,AlOOH质量分数为1wt%时,CF/EP复合材料的GIIC达到931 J/m2,提高了29.3%;热塑性颗粒中,改性聚芳醚酮颗粒(PAEK)的综合性能最好,添加10wt% PAEK,CF/EP复合材料的GIIC可以提高32%,这是由于预制在层间的热塑性颗粒随着基体流动而得到扩散,形成了独特的跨层间连续结构,从而使裂纹扩展的阻力增加,有效提高了CF/EP复合材料的GIIC;10wt%PAEK和1wt%AlOOH共同增韧CF/EP复合材料的GIIC达到1 368 J/m2,相对于未增韧的CF/EP复合材料提高了90%,增韧效果比PAEK和AlOOH对CF/EP复合材料的增韧效果之和大,这表明,PAEK和AlOOH同时加入CF/EP复合材料层间,对CF/EP复合材料具有协同增韧效应。
  • 图  1  端部缺口弯曲实验试样装置示意图

    Figure  1.  Schematic illustration of specimen for the end-notched flexure test

    图  2  无机纳米粒子增韧CF/EP复合材料的II型层间断裂韧性(GIIC)

    Figure  2.  Type II fracture toughness (GIIC) of CF/EP composites toughened with inorganic nano particles

    图  3  纳米羟基氧化铝(AlOOH)增韧CF/EP复合材料的裂纹扩展的SEM图像

    Figure  3.  SEM image of crack propagation path of CF/EP composites toughened with nano sheet boehmite (AlOOH) particles

    图  4  热塑性颗粒增韧CF/EP复合材料的GIIC

    Figure  4.  GIIC of CF/EP composites toughened with thermoplastic particles

    图  5  热塑性颗粒增韧CF/EP复合材料断裂面的SEM图像

    Figure  5.  SEM images of fracture surfaces of CF/EP composites toughened with thermoplastic particles

    图  6  不同颗粒增韧的CF/EP复合材料的GIIC

    Figure  6.  GIIC of CF/EP composites toughened with different particles

    图  7  PAEK单独增韧和PAEK-AlOOH共同增韧CF/EP复合材料试样断裂面SEM图像

    Figure  7.  SEM images of fracture surfaces of CF/EP composites toughened with PAEK and PAEK-AlOOH

    表  1  T700-12k碳纤维(T700-CF)和TDE85环氧树脂(TDE85-EP)的性能

    Table  1.   Properties of T700-12k carbon fiber (T700-CF) and TDE85 epoxy resin (TDE85-EP)

    Strength/MPaModulus/GPaElongation at break/%Density/(g·cm−3)
    T700-CF 4 800 235 2.0 1.78
    TDE85-EP 70 4.0 1.89 1.22
    下载: 导出CSV

    表  2  各种增韧粒子尺寸及含量

    Table  2.   Size and content of various toughening particles

    AlOOHFe2O3MMTMWCNTsPAEK, PA6, PES
    Size/nm 22 40 2.13 8-15 25×103
    Mass fraction/wt% 0,0.5,1.0,1.5,2.0 0,0.5,1.0,1.5,2.0 0,0.5,1.0,1.5,2.0 0,0.5,1.0,1.5,2.0 10
    Notes:AlOOH—Nano sheet boehmite; MMT—Nano montmorillonite; MWCNTs—Multi-walled carbon nanotubes; PAEK—Modified poly(aryl ether ketone); PA6—Polyamide 6; PES—Polyethersulfone.
    下载: 导出CSV
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出版历程
  • 收稿日期:  2019-09-10
  • 录用日期:  2019-10-22
  • 网络出版日期:  2019-11-13
  • 刊出日期:  2020-08-31

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