| 田晓晓,国青怡,彭高蓉.湿热环境对纤维增强环氧树脂基复合材料层间剪切性能的影响及寿命预测[J].装备环境工程,2025,22(5):58-65. TIAN Xiaoxiao,GUO Qingyi,PENG Gaorong.Interlaminar Shear Properties and Lifetime Estimation of Fiber-reinforced Epoxy Composites under Hygrothermal Conditions[J].Equipment Environmental Engineering,2025,22(5):58-65. |
| 湿热环境对纤维增强环氧树脂基复合材料层间剪切性能的影响及寿命预测 |
| Interlaminar Shear Properties and Lifetime Estimation of Fiber-reinforced Epoxy Composites under Hygrothermal Conditions |
| 投稿时间：2025-04-07 修订日期：2025-05-16 |
| DOI：10.7643/issn.1672-9242.2025.05.009 |
| 中文关键词: 复合材料 湿热老化 碳纤维 玻璃纤维 环氧树脂 层间剪切强度 寿命预估中图分类号:TJ04 文献标志码:A 文章编号:1672-9242(2025)05-0058-08 |
| 英文关键词:composite hygrothermal ageing carbon fiber glass fiber epoxy resin interlaminar shear properties life prediction |
| 基金项目: |
|
|
|
|
| 摘要点击次数: |
| 全文下载次数: |
| 中文摘要: |
| 目的 研究湿热环境对环氧树脂基复合材料层间剪切性能的影响，并建立复合材料贮存寿命评估方法。方法 对T700碳纤维/环氧树脂复合材料与SC-1200玻璃纤维/环氧树脂复合材料进行4个温湿度条件下的加速湿热老化实验，测试了湿热老化后试件的红外光谱曲线、玻璃化转变温度和层间剪切强度。通过广义艾林模型计算材料在不同实验条件下的性能退化速率，并建立退化速率与环境温度和相对湿度的关系。结果 随着湿热老化行为的进行，复合材料的玻璃化转变温度明显下降，力学性能也发生明显降低。分析了层间剪切强度退化速率的变化规律，建立了T700碳纤维/环氧树脂复合材料与SC-1200玻璃纤维/环氧树脂复合材料受温湿度调控的退化速率模型，并计算了特定贮存环境下，复合材料力学性能的退化速率。结论 在湿热加速老化过程中，碳纤维/环氧树脂与玻璃纤维/环氧树脂单向板的性能下降明显。以层间剪切强度下降到初始性能的70%为失效判据，可以计算在温度为20 ℃、相对湿度为80%的环境下，T700碳纤维/环氧树脂复合材料可贮存6 119.06 d(16.76 a)，SC-1200玻璃纤维/环氧树脂复合材料可贮存3793.01 d(10.39 a)。 |
| 英文摘要: |
| The work aims to investigate the effect of hygrothermal conditions on interlaminar shear properties and predict the storage life of composite materials. Accelerated hygrothermal ageing experiments were conducted on T700 carbon fiber/epoxy resin composites and SC-1200 glass fiber/epoxy resin composites under four experimental conditions. The infrared spectra, glass transition temperatures, and interlaminar shear properties of the specimens before and after hygrothermal ageing were tested. Degradation rates of material properties under different experimental conditions were calculated with the generalized Eyring model, and the relationship between degradation rate and ambient temperature and relative humidity was established. After hygrothermal ageing, the glass transition temperature of the composites decreased significantly, and their mechanical properties also showed a marked decrease. The variation in the degradation rate of interlaminar shear properties was analyzed, and the model for the degradation rate controlled by the temperature/relative humidity for T700 carbon fiber/epoxy resin composites and SC-1200 glass fiber/epoxy resin composites was established. The degradation rate of the composite mechanical properties under specific storage conditions was estimated. During accelerated hygrothermal ageing, the properties of carbon fiber/epoxy resin and glass fiber/epoxy resin unidirectional board degrade significantly. Based on the failure criterion defined as a reduction to 70% in interlaminar shear properties from initial mechanical properties, it can be calculated that under 20 ℃/ 80%RH condition, T700 carbon fiber/epoxy resin composite can be stored for 6 119.06 days (16.76 years) and SC-1200 glass fiber/epoxy resin composite can be stored for 3 793.01 days (10.39 years). |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| 关闭 |
