FeOOH纳米粒子协同聚偏氟乙烯电纺纤维膜插层增强碳纤维复合材料层间断裂韧性

付泽浩; 向阳; 马传国; 曾塘玉; 戴培邦

doi:10.13801/j.cnki.fhclxb.20210518.001

FeOOH纳米粒子协同聚偏氟乙烯电纺纤维膜插层增强碳纤维复合材料层间断裂韧性

doi: 10.13801/j.cnki.fhclxb.20210518.001

付泽浩^1,,
向阳^1,,
马传国^{1, 2, ,},
曾塘玉^1,,
戴培邦^{1, 2,}

1.
桂林电子科技大学　材料科学与工程学院，桂林 541004
2.
广西电子信息材料构效关系重点实验室，桂林 541004

基金项目: 国家自然科学基金(51763006)；广西电子信息材料构效关系重点实验室开放研究基金(201018-K)；广西自然科学基金创新团队项目(2019GXNSFGA245005)

详细信息

通讯作者:
马传国，博士，教授，博士生导师，研究方向为高分子功能复合材料、纤维增强复合材料等　E-mail: machuanguo@guet.edu.cn

中图分类号: TB332
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出版历程
- 收稿日期: 2021-04-01
- 修回日期: 2021-05-07
- 录用日期: 2021-05-08
- 网络出版日期: 2021-05-18
- 刊出日期: 2022-04-01

Enhancing interlaminar fracture toughness of carbon fiber composite with interleaved polyvinylidene fluoride electrospun fiber veils cooperating FeOOH nanoparticles

FU Zehao^1
,,
XIANG Yang^1
,,
MA Chuanguo^{1, 2
, ,},
ZENG Tangyu^1
,,
DAI Peibang^{1, 2
,}

1.
School of Material Science and Engineering, Guilin University of Electronic Technology, Guilin 541004, China
2.
Guangxi Key Laboratory of Structure-Effect Relationship of Electronic Information Materials, Guilin 541004, China

摘要

摘要: 为有效增强碳纤维/环氧树脂复合材料层压板(CF/EP)的层间断裂韧性，提出了一种纳米粒子协同纳米纤维膜插层改性方法。首先利用喷涂法将针状羟基氧化铁(FeOOH)纳米粒子均匀负载于碳纤维布表面，然后将制得的静电纺丝聚偏氟乙烯纳米纤维膜(PVDF)插入碳纤维布的层间，采用手工铺设-真空热压法制备了改性复合材料层压板PVDF&FeOOH-CF/EP，研究了不同面密度的FeOOH协同PVDF增强CF/EP层间断裂韧性的作用效果及增强机制。结果表明，FeOOH在碳纤维布上分布均匀，在面密度为2 g/m²时，PVDF&FeOOH-CF/EP层压板获得了最佳的增韧效果，相对于CF/EP，其I型层间断裂韧性G_IC提高了118%，II型层间断裂韧性G_IIC提高了97%，而PVDF-CF/EP的G_IC和G_IIC只分别提高了70%和44%。SEM分析显示，FeOOH的加入不仅提高了基体的断裂韧性，同时也增强了PVDF纤维与基体的界面作用，进而强化了PVDF的增韧行为。
- 碳纤维 /
- 层压板 /
- 断裂韧性 /
- 纳米结构 /
- 静电纺丝
Abstract: For effectively enhancing the interlaminar fracture toughness of carbon fiber epoxy resin composite laminates (CF/EP), a modification method of nanofiber veils intercalation cooperating nanoparticles was proposed. First, the needle-like FeOOH nanoparticles were uniformly loaded on the surface of the carbon fiber cloth by spraying method, and then the prepared electrospun polyvinylidene fluoride (PVDF) nanofiber veils was interleaved between the layers of the FeOOH loaded carbon fiber cloth, and the modified composite laminate PVDF&FeOOH-CF/EP was prepared by manual laying-vacuum hot pressing method, and the effective effect and mechanism of FeOOH with different areal densities in enhancing the interlaminar fracture toughness of CF/EP with the PVDF were studied. The results show that FeOOH is evenly distributed on the carbon fiber cloth. When the areal density is 2 g/m², the PVDF&FeOOH-CF/EP laminate has the best toughening effect. Compared with that of CF/EP, the mode-I interlaminar fracture toughness G_IC is increased by 118% and mode-II interlaminar fracture toughness G_IIC is increased by 97%, while the G_IC and G_IIC of PVDF-CF/EP only are increased by 70% and 44%, respectively. SEM analysis shows that the addition of FeOOH not only improves the fracture toughness of the matrix, but also enhances the interface between the PVDF fiber and the matrix epoxy resin, thereby enhancing the toughening behavior of PVDF fiber.
- carbon fiber /
- laminate /
- fracture toughness /
- nano-structures /
- electrospun

HTML全文

图 1 FeOOH&聚偏氟乙烯纳米纤维膜(PVDF)-碳纤维环氧树脂(CF/EP)复合材料层压板制备示意图

Figure 1. Schematic diagram of preparation of FeOOH&polyvinylidene fluoride nanofiber (PVDF)-carbon fiber/epoxy resin (CF/EP) composite laminate

FeOOH-CF—FeOOH nanoparticles uniformly loaded on the surface of the carbon fiber cloth

下载: 全尺寸图片幻灯片

图 2 FeOOH纳米粒子 ((a)、(a’)) 和PVDF纳米纤维膜 ((b)、(b’)) 的SEM图像

Figure 2. SEM images of FeOOH nanoparticles ((a), (a’)) and PVDF nanofiber veils ((b), (b’))

下载: 全尺寸图片幻灯片

图 3 不同层压板的I型断裂试验分析：(a) 典型载荷-位移曲线；(b) R曲线；(c) 层间断裂韧性

Figure 3. Mode I fracture test analysis of different laminates: (a) Typical load-displacement curves; (b) R curves; (c) Mode I interlaminar fracture toughness

G_{IC init}—Initial fracture toughness of crack; G_{IC prop}—Propagation fracture toughness of crack

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图 4 不同层压板的I型断裂面形貌的SEM图像

Figure 4. SEM images of mode I fracture surface morphology of different laminates (((a),(a’)) CF/EP; ((b),(b’)) PVDF-CF/EP; ((c),(c’)) FeOOH(2)&PVDF-CF/EP)

下载: 全尺寸图片幻灯片

图 5 不同层压板的II型断裂试验分析：(a) 典型载荷-位移曲线；(b) II型断裂韧性值比较

Figure 5. Mode II fracture test analysis of different laminates: (a) Load-displacement curves; (b) Comparison of mode II fracture toughness

下载: 全尺寸图片幻灯片

图 6 不同层压板的II型断裂面形貌的SEM图像

Figure 6. SEM images of mode II fracture surface morphology of different laminates(((a),(a’)) CF/EP; (b),(b’) PVDF-CF/EP; (c),(c’) 2 g/m² FeOOH&PVDF-CF/EP)

下载: 全尺寸图片幻灯片

表 1 不同纳米粒子协同电纺纤维插层材料增强CF/EP复合材料层间断裂韧性比较

Table 1. Comparison of the enhancement of interlaminar fracture toughness of CF/EP composites with different nanoparticles and electrospun fiber interleaves

Interleave	Nanoparticle content	Use of nanoparticle	G_IC/(kJ·m⁻²) modified	Increase in G_IC/%	G_IIC/(kJ·m⁻²) modified	Increasein G_IIC/%	Ref.
FeOOH&PVDF	2 g/m²	Sprayed on CF	1.09	118	4.29	97	This work
TiO₂/PA6	25wt%	Dispersed in electrospun fiber	0.44	14	2.64	4	[18]
SiO₂/nSF	20wt%		0.54	37	1.76	30	[19]
CNC/PSF	0.5wt%		1.12	29	2.44	49	[20]
Al₂O₃-PAN	1wt%		1.22	47	—	—	[21]
CNT/PAN	3wt%		1.10	77	—	—	[22]
CNT /PA66	14wt%	Coated on electrospun fiber	0.82	122	3.01	81	[9]
CNT/PCL	15 g/m²		0.67	68	2.30	44	[23]
CNT/PSF	10wt%		0.75	53	1.87	34	[24]
Notes: PA6—Polyamide 6; nSF—Silk fibroin nanofiber; CNC—Cellulose nanocrystal; PSF—Polysulfone; PAN—polyacrylonitrile; CNT— Carbon nanotubes; PCL—Polycaprolactone; PA66—Polyamide 66; G_IIC—Mode II critical energy release rate.

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