通过拉伸实验获得碳纤维增强聚醚醚酮复合材料(CF/PEEK)拉伸性能随温度的变化关系,并利用扫描电子显微镜观察断口形貌,研究分析了材料高温损伤机理.结果表明,随着环境温度的升高,碳纤维/PEEK的弹性模量与拉伸强度显著降低,在温度达到220℃时,分别下降89.20％和71.18％;断裂伸长率持续上升,在220℃时达到8.84％.弹性模量与断裂伸长率在Tg附近变化显著,主要原因是高温下纤维/树脂界面脱粘和树脂由玻璃态转化为高弹态后拉伸性能的显著变化.借助有限元方法计算由该材料制成的驾驶舱方向舵踏板在不同温度下的疲劳寿命,得出疲劳寿命随温度的升高而下降.在Coffin-Manson方程和通用斜率方程的基础上总结得出该材料疲劳寿命与温度的关系.
参考文献
| [1] | Sandi G. Miller;Gary D. Roberts;Justin L. Bail.Effects of hygrothermal cycling on the chemical, thermal, and mechanical properties of 862/W epoxy resin[J].High performance polymers,20126(6):470-477. |
| [2] | Saud Aldajah;Ammar Al-omari;Ashraf Biddah.Accelerated Weathering Effects On The Mechanical And Surface Properties Of Cfrp Composites[J].Materials & design,20093(3):833-837. |
| [3] | 崔小明.特种工程塑料聚醚醚酮的开发与应用[J].工程塑料应用,2004(10):63-66. |
| [4] | Harsha AP.;Tewari US..Two-body and three-body abrasive wear behaviour of polyaryletherketone composites[J].Polymer Testing,20034(4):403-418. |
| [5] | A. Zafar;F. Bertocco;J. Schjodt-Thomsen;J.C Rauhe.Investigation of the long term effects of moisture on carbon fibre and epoxy matrix composites[J].Composites science and technology,20126(6):656-666. |
| [6] | 林有希;高诚辉.碳纤维增强聚醚醚酮复合材料的研究及应用[J].塑料工业,2005(10):5-8,20. |
| [7] | 代晓瑛;雷兴平.环控系统高温管路用聚醚醚酮的应用性能研究[J].塑料工业,2013(11):100-103. |
| [8] | Lin, L.Y.;Tlatlik, H.;Gralla, R.;Igartua, M.A.;Baets, P.D.;Schlarb, A.K..Mechanical and thermal behaviours of polyetheretherketone-based multi-scale composites[J].Journal of Composite Materials,201317(17):2087-2096. |
| [9] | Rogerio L Mazur;Pedro C Oliveira;Mirabel C Rezende.Environmental effects on viscoelastic behavior of carbon fiber/PEKK thermoplastic composites[J].Journal of Reinforced Plastics and Composites,20148(8):749-757. |
| [10] | 魏建锋;郑修麟.聚醚醚酮基复合材料的疲劳寿命表达式及累积疲劳损伤预测[J].材料工程,1997(12):13. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%