BN粒子改性PVDF电纺纤维膜插层增强碳纤维/环氧树脂复合材料层间韧性

doi:10.19936/j.cnki.2096-8000.20240428.004

复合材料科学与工程 ›› 2024, Vol. 0 ›› Issue (4): 26-32.DOI: 10.19936/j.cnki.2096-8000.20240428.004

BN粒子改性PVDF电纺纤维膜插层增强碳纤维/环氧树脂复合材料层间韧性

曾塘玉¹, 马传国^1,2*, 向阳¹, 邵士磊¹

1.桂林电子科技大学材料科学与工程学院,桂林 541000;
2.广西电子信息材料构效关系重点实验室,桂林 541004

收稿日期:2023-04-20 出版日期:2024-04-28 发布日期:2024-04-28
通讯作者: 马传国(1978—),男,博士,教授,主要从事先进高分子复合材料方面的研究,machuanguo@guet.edu.cn。
作者简介:曾塘玉(1997—),男,在读硕士研究生,主要从事纤维增强复合材料方面的研究。
基金资助:
国家自然科学基金(12262007);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)

Improving interlaminar fracture toughness of carbon fiber/epoxy resin composite toughened by BN particles modified PVDF electrospinning fibrous interleaf

ZENG Tangyu¹, MA Chuanguo^1,2*, XIANG Yang¹, SHAO Shilei¹

1. School of Materials Science and Engineering, Guilin University of Electronic Technology, Guilin 541000, China;
2. Guangxi Key Laboratory of Electronic Information Materials, Guilin 541004, China

Received:2023-04-20 Online:2024-04-28 Published:2024-04-28

摘要/Abstract

摘要： 针对纤维增强复合材料层压板的分层失效问题,本文提出了一种氮化硼(BN)粒子改性聚偏氟乙烯(PVDF)电纺纤维膜以插层方式增强碳纤维/环氧树脂(CF/EP)复合材料层间断裂韧性的方法。通过超声处理将BN均匀分散于PVDF溶液中,利用静电纺丝方法制备了BN改性PVDF纤维膜(BN&PVDF),作为插层材料被引入碳纤维的层间,采用手工铺设-真空热压法制备BN&PVDF增强CF/EP复合材料层压板(BN&PVDF-CF/EP)。重点研究了BN粒子含量对改性PVDF电纺纤维膜增强CF/EP层间断裂韧性的影响及相关增韧机理。研究结果显示:当BN含量为3.2wt%时,BN&PVDF电纺纤维膜的增韧效果最好,相对于CF/EP,BN&PVDF-CF/EP的Ⅰ型层间断裂韧性提高了129.6%,Ⅱ型层间断裂韧性提高了160.6%;BN粒子引入后,提高了PVDF的拉伸强度和模量;SEM分析显示,BN粒子被部分镶嵌于PVDF纤维上,提高了PVDF纤维表面的粗糙度,增强了PVDF纤维与基体的界面相互作用,引起了更加复杂的增韧形式并提高了PVDF纤维的增韧效果。

关键词: 碳纤维增强复合材料, 层间断裂韧性, 氮化硼粒子, 聚偏氟乙烯, 电纺纤维

Abstract: To address the problem of delamination damage in fiber reinforced composite laminate, an interleaving method of boron nitride (BN) particle-modified electrospun polyvinylidene fluoride (PVDF) fibrous was proposed to improve the interlaminar fracture toughness of carbon fiber/epoxy (CF/EP) composite laminate. The BN was first uniformly dispersedin PVDF solution by ultrasonic treatment, then BN-modified PVDF fibrous (BN&PVDF) was prepared using an electrospinning method and introduced into the interlayer of carbon fibres as an intercalation material, and BN&PVDF reinforced CF/EP composite laminates (BN&PVDF-CF/EP) were prepared by manual lay-up method and vacuum hot-pressing process. The study focused on the effect of BN particle content in modified PVDF electrospun fibrous on the reinforcement of CF/EP interlaminar fracture toughness and the relevant interlaminar toughening mechanism. The results show that the modified PVDF electrospun fibrous with a BN content of 3.2wt% have achieved the best toughening effect. The mode Ⅰ and Ⅱ interlaminar fracture toughness of BN&PVDF-CF/EP are increased by 129.6% and 160.6%, respectively, compared to that of CF/EP. The introduction of the BN particles increases the tensile strength and modulus of the PVDF fibers. The BN particles areembedded in the PVDF fibers and increase the roughness of the PVDF surface, which enhances the interfacial interaction between the PVDF fibers and the matrix, inducing a more complex toughening behavior and improving the toughening effect of the PVDF fibers.

Key words: carbon fiber reinforced composites, interlaminar fracture toughness, boron nitride particles, polyvinylidene fluoride, electrospun fibers

中图分类号:

TB332

曾塘玉, 马传国, 向阳, 邵士磊. BN粒子改性PVDF电纺纤维膜插层增强碳纤维/环氧树脂复合材料层间韧性[J]. 复合材料科学与工程, 2024, 0(4): 26-32.

ZENG Tangyu, MA Chuanguo, XIANG Yang, SHAO Shilei. Improving interlaminar fracture toughness of carbon fiber/epoxy resin composite toughened by BN particles modified PVDF electrospinning fibrous interleaf[J]. COMPOSITES SCIENCE AND ENGINEERING, 2024, 0(4): 26-32.

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BN粒子改性PVDF电纺纤维膜插层增强碳纤维/环氧树脂复合材料层间韧性

Improving interlaminar fracture toughness of carbon fiber/epoxy resin composite toughened by BN particles modified PVDF electrospinning fibrous interleaf

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