碳纤维表面的微波辐射改性方法及其对CFRPs界面性能的影响

doi:10.19936/j.cnki.2096-8000.20221228.016

复合材料科学与工程 ›› 2022, Vol. 0 ›› Issue (12): 116-123.DOI: 10.19936/j.cnki.2096-8000.20221228.016

碳纤维表面的微波辐射改性方法及其对CFRPs界面性能的影响

张静静¹, 梁森^1*, 汤超²

1.青岛理工大学机械与汽车工程学院,青岛266000;
2.清华大学机械工程系,北京100084

收稿日期:2021-11-22 发布日期:2023-02-03
通讯作者: 梁森(1962-),男,博士研究生,教授,主要从事复合材料结构方面的研究,qdunitec@163.com。
作者简介:张静静(1990-),女,博士研究生,副教授,主要从事树脂基复合材料成型及界面方面的研究。
基金资助:
青岛理工大学“礼贤学者”青年英才支持计划

Microwave irradiation on CFs and its effects on the interfacial properties of CFRPs

ZHANG Jing-jing¹, LIANG Sen^1*, TANG Chao²

1. School of Mechanical and Automotive Engineering, Qingdao University of Technology, Qingdao 266000, China;
2. Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China

Received:2021-11-22 Published:2023-02-03

摘要/Abstract

摘要： 微波辐射改性碳纤维是CFRPs界面强化的有效手段。本工作从电磁场理论、电磁仿真模拟、试验测试的角度全面研究了微波辐射对碳纤维的作用过程,优化了微波电场与碳纤维夹角、辐射区域及辐射时间的工艺参数,定量表征了微波辐射碳纤维对复合材料的界面强化效果。Ansoft HFSS电磁模拟结果表明碳纤维对微波的吸收具有方向选择性:碳纤维对其轴向极化微波产生强反射,反射率高达98.44%;对其径向极化微波的吸收特性良好,反射率仅为6.44%,因此避免微波沿着纤维轴向极化是实现碳纤维有效改性的工艺基础。测试并分析了微波辐射对碳纤维编织布温度的影响规律,优化了适用于碳纤维均匀改性的微波辐射区域;基于微滴脱黏法,建立了CFRPs界面剪切强度与微波辐射时间的关系,获得了辐射80 s时CFRPs界面剪切强度最高22.6%的增幅。

关键词: 碳纤维/树脂复合材料, 碳纤维表面改性, 微波辐射, 界面剪切强度, 吸波特性

Abstract: Microwave irradiation is seen as an effective modification technique for interface enhancement of carbon fiber reinforced plastics (CFRPs). In this study, a microwave system which can transfer single mode of TE₁₀ electromagnetic wave was used for CFs surface modification. The modification process of microwave on carbon fibers (CFs) were investigated in electromagnetic field theory, electromagnetic simulation and experiments. Three irradiating parameters of the angle between CFs and the electric field direction, irradiating area and irradiating time were optimized. The enhancing effect of microwave irradiation on composites were quantitatively characterized. Ansoft HFSS simulation results showed that the microwave absorption property of CFs is related to the direction of microwave polarization, exhibiting a good absorption of microwave that polarized perpendicular to the CFs with reflectivity of only 6.44%, while a high reflectivity of 98.44% to microwave that polarized parallel to the CFs which should be avoided. The temperature of the irradiated CF fabric was tested and analyzed, based on which an optimized irradiating method was obtained for uniform irradiation of the carbon fabric. Based on the micro drop debonding method, the relationship between the interfacial shear strength (IFSS) of CFRPs and the microwave irradiation time was established, and the maximum 22.6% increase of the IFSS of CFRPs was obtained at 80 s radiation.

Key words: CFRPs, surface modification of CFs, microwave irradiation, IFSS, microwave absorption

中图分类号:

TB332

张静静, 梁森, 汤超. 碳纤维表面的微波辐射改性方法及其对CFRPs界面性能的影响[J]. 复合材料科学与工程, 2022, 0(12): 116-123.

ZHANG Jing-jing, LIANG Sen, TANG Chao. Microwave irradiation on CFs and its effects on the interfacial properties of CFRPs[J]. COMPOSITES SCIENCE AND ENGINEERING, 2022, 0(12): 116-123.

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碳纤维表面的微波辐射改性方法及其对CFRPs界面性能的影响

Microwave irradiation on CFs and its effects on the interfacial properties of CFRPs

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