碳纤维增强树脂基复合材料模拟海洋环境长期老化及失效行为

王登霞; 孙岩; 谢可勇; 李晖; 王新波; 段剑; 邵蒙

doi:10.13801/j.cnki.fhclxb.20210512.002

碳纤维增强树脂基复合材料模拟海洋环境长期老化及失效行为

doi: 10.13801/j.cnki.fhclxb.20210512.002

王登霞^1, ,,
孙岩^1,,
谢可勇^1,,
李晖^1,,
王新波^1,,
段剑^1,,
邵蒙^2,

1.
山东非金属材料研究所　第七科研室，济南 250031
2.
山东非金属材料研究所　第二科研室，济南 250031

基金项目: 国防技术基础科研项目(JSHS2019209C001；JSHS2019207B001)

详细信息

通讯作者:
王登霞，博士，研究员，硕士生导师，研究方向为非金属材料环境试验与寿命预测　 E-mail：dengxiawang@outlook.com

中图分类号: TB332/TB304
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- 被引次数: 0
出版历程
- 收稿日期: 2021-03-31
- 修回日期: 2021-04-22
- 录用日期: 2021-04-25
- 网络出版日期: 2021-05-13
- 刊出日期: 2021-03-01

Long term aging and failure behaviors of carbon fiber reinforced polymer composites in simulated marine environments

WANG Dengxia^{1
, ,},
SUN Yan^1
,,
XIE Keyong^1
,,
LI Hui^1
,,
WANG Xinbo^1
,,
DUAN Jian^1
,,
SHAO Meng^2
,

1.
No. 7 Scientific Research Laboratory, Shandong Institute of Non-metallic Materials, Jinan 250031, China
2.
No. 2 Scientific Research Laboratory, Shandong Institute of Non-metallic Materials, Jinan 250031, China

摘要

摘要: 选取两种先进轻质复合材料：碳纤维增强酚醛树脂复合材料(CF/S-157)与碳纤维增强环氧树脂复合材料(CF/TDE-85)，开展模拟海洋环境实验室盐雾老化、湿热老化和盐水浸泡环境长达9600 h加速试验。基于各种力学性能(拉伸强度、弯曲强度、压缩强度及层间剪切强度)开展材料老化行为规律研究，利用傅立叶变换衰减全反射红外光谱(ATR-FTIR)分析方法对树脂基体在各种加速环境中的分子链段与官能团变化情况进行分析，得到树脂基体的失效模式；利用外观、超声扫描成像、SEM分析树脂/纤维界面的变化情况，明确了树脂/纤维界面的破坏方式；利用差示扫描量热分析(DSC)与热重分析(TG)分析各种加速老化方式对碳纤维增强树脂复合材料的玻璃化转变温度T_g与热失重的影响。结果表明，三种老化方式对树脂基体的老化影响顺序依次为70℃/95%RH (Relative humidity)湿热、35℃盐雾、常温盐水浸泡。得到了先进轻质树脂基复合材料的模拟海洋环境老化行为和失效机制、失效模式，为实现高性能树脂基复合材料的环境适应性评价和使用寿命预测奠定基础。
- 碳纤维增强树脂复合材料 /
- 模拟老化 /
- 力学性能 /
- 腐蚀行为 /
- 失效模式
Abstract: Carbon fiber reinforced phenolic resin composite (CF/S-157) and carbon fiber reinforced epoxy composite (CF/TDE-85), which are widely used at present, were selected to carry out the salt spray aging, hydrothermal aging and salt water immersion environmental test in laboratory. Based on various mechanical properties (tensile strength, flexural strength, compressive strength and interlaminar shear strength), the corrosion behaviors of the composite materials were studied. The changes of molecular segments and functional groups of resin matrix in various aging environments were analyzed by attenuated total reflection flourier transformed infrared spectroscopy (ATR-FTIR), and the failure modes of various matrix resins were obtained. The failure mode of resin/fiber interface was identified based on the characterization of SEM and ultrasonic C-scanning testing and imaging system. The effects of various aging methods on glass transition temperature T_g and thermal mass loss of composites were analyzed by differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). The results show that the deterioration severity order of the three aging methods is hydrothermal aging, salt spray and salt water immersion. The corrosion characterization, failure mechanism and failure mode of the composites in simulated marine environment are obtained, which lays a foundation for environmental adaptability evaluation and service life prediction of high-performance resin matrix composites.
- carbon fiber reinforced polymer composites /
- simulated aging /
- mechanical properties /
- corrosion behaviors /
- failure mode

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图 1 碳纤维/酚醛树脂复合材料(CF/S-157)力学性能随加速老化时间的变化

Figure 1. Mechanical properties evolution curves of carbon fiber reinforced phenolic resin composite (CF/S-157) with aging time

下载: 全尺寸图片幻灯片

图 2 碳纤维/环氧树脂复合材料(CF/TDE-85)力学性能随老化时间的变化

Figure 2. Mechanical properties evolution curves of carbon fiber reinforced epoxy composite (CF/TDE-85) with aging time

下载: 全尺寸图片幻灯片

图 3 CFRP原始拉伸试件与不同方式老化6200 h后外观拉伸破坏方式宏观照片

Figure 3. Macroscopic pictures of appearance tensile failure modes of original CFRP specimens and that of aging 6200 h in different ways

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图 4 CFRP原始试件与不同方式老化6200 h后弯曲破坏样品超声扫描图像

Figure 4. Ultrasonic scanning images of original CFRP specimens and that of aging 6200 h in different ways after flexural failure

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图 5 CFRP不同方式老化6200 h拉伸破坏层间微观形貌

Figure 5. Interlaminar microstructures of tensile failure CFRP specimens after aging 6200 h in different ways

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图 6 CF/S-157中酚醛树脂的分子特征结构

Figure 6. Typical molecular structure of phenolic resin in CF/S-157

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图 7 CF/S-157中酚醛树脂不同方式老化8000 h后的FTIR-ATR谱图

Figure 7. FTIR-ART spectra of phenolic resin in original CF/S-157 and that of aging 8000 h in different ways

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图 8 CF/TDE-85中环氧树脂的分子特征结构

Figure 8. Typical molecular structure of epoxy resin in CF/TDE-85

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图 9 CF/TDE-85中环氧树脂不同方式老化8000 h后的FTIR-ATR谱图

Figure 9. FTIR-ART spectra of epoxy resin in original CF/TDE-85 and that of aging 8000 h in different ways

下载: 全尺寸图片幻灯片

图 10 CF/S-157不同方式老化6200 h后的DSC与TG曲线

Figure 10. DSC and TG curves of CF/S-157 after aging 6200 h in different ways

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图 11 CF/TDE-85不同方式老化6200 h后的DSC与TG曲线

Figure 11. DSC and TG curves of CF/TDE-85 after aging 6200 h in different ways

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表 1 碳纤维增强树脂基复合材料(CFRP)老化试验条件

Table 1. Various artificial aging experimental conditions in lab for carbon fiber reinforced polymer (CFRP)

Aging method	Aging standard	Experimental condition
Hydrothermal	Test method for resistance of glass fiber reinforced plastics to damp heat: GB 2574—1989^[29]	60℃; 95%RH (Relative humidity)
Salty water immersion	Test method for resistance of glass fiber reinforced plastics to water and accelerated test: GB/T 10703—1989^[30]	25℃; 5% NaCl water solution
Salt spray	Paint and varnishes-Determination of resistance to neutral salt spray: GB/T 1771—2007^[31]	5% NaCl fumes at 35℃; Solution pH: 6.8-7.2; Precipitation rate of salt spray: 1.8 mL/(h·80 cm²)

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表 2 CFRP性能测试方法

Table 2. Test methods of mechanical properties for CFRP

Mechanical property	Determination standard	Loaded speed/(mm·min⁻¹)
Tensile strength	Fiber-reinforced plastics composites-Determination of tensile properties: GB/T 1447—2005^[27]	2
Flexural strength	Fiber-reinforced plastics composites-Determination of flexural properties: GB/T 1449—2005^[32]	2
Compressive strength	Fiber-reinforced plastics composites-Determination of compressive properties: GB/T 1448—2005^[28]	5
Shear strength	Fiber-reinforced plastics composites-Determination of apparent interlaminar shear strength by short-beam method: JC/T 773-2010^[33]	1

下载: 导出CSV

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