以碳纤维缠绕复合材料NOL环为研究对象,建立了一种研究碳纤维缠绕复合材料的壳体或压力容器在存贮和使用过程中湿热性能的加速老化方法.将复合材料NOL环分别浸泡在35℃、55℃、65℃和75℃蒸馏水中,研究其吸湿特性、动态力学性能以及静态力学性能的变化.结果表明,根据NOL环的吸湿特性,其吸湿过程可分为3个阶段:固有自由体积控制扩散吸湿阶段;分子链松弛控制吸湿阶段;界面破坏及裂纹扩展控制吸湿阶段.当湿含量达到1 wt%左右时,复合材料进入界面破坏吸湿阶段,性能明显下降,剪切强度和弯曲强度保留率约为75%和67%,Tg下降了20℃.该结果可为碳纤维缠绕复合材料壳体或压力容器的存贮寿命的预测与评价提供重要依据.
参考文献
| [1] | 陈平,骞锡高,陈辉,等.碳纤维复合材料发动机壳体用韧性环氧树脂基体的研究[J].复合材料学报,2002,19(2);24-27.Chen Ping,Jian Xigao,Chen Hui,et al.Study of toughened epoxy resins matrix for carbon fiber composite motor case[J].Acta Materiae Compositae Sinica,2002,19(2):24-27. |
| [2] | 杜善义.先进复合材料与航空航天[J].复合材料学报,2007,24(1):1-11.Du Shanyi.Advanced composite materials and aerospace engineering[J].Acta Materiae Compositae Sinica,2007,24(1):1-11. |
| [3] | Prosen S,Karpe S,Kinna M,et al.Compression,fatigue,and stress studies on NOL ring specimens[M].Philadelphia:American Society for Testing and Materials,1963:96-104. |
| [4] | Chen Weiming,Yu Yunhua,Li Peng,et al.Effect of new epoxy matrix for T800 carbon fiber/epoxy filament wound composites[J].Composite Science and Technology,2007,67:2261-2270. |
| [5] | Adams R D,Singh M M.The dynamic properties of fiberreinforced polymers exposed hot,wet conditions[J].Composites Science and Technology,1996,56:977-997. |
| [6] | Ray B C.Temperature effect during humid ageing on interfaces of glass and carbon fibers reinforced epoxy composites[J].Journal of Colloid and Interface Science,2005,298:111-117. |
| [7] | Chifu A F,Iroh J O.Short term isothermal aging of epoxy resin and epoxy-carbon fiber composites[J].Polymer Composites,1996,17(3):408-413. |
| [8] | Gning P B,Tarfaoui M,Collombet F,et al.Damage development in thick composite tubes under impact loading and influence on implosion pressure;Experimental observations[J].Composites Part B:Engineering,2005,36:306-318. |
| [9] | Zhang J S,Karbhari V M,Wu L,et al.Field exposure based durability assessment of FRP column wrap systems[J].Composites Part B:Engineering,2003,34:41-50. |
| [10] | Li Rongbao,Albert F Y,Charles Y C.Moisture absorption and hygrothermal aging in a bismaleimide resin[J].Polymer,2001,42(17):7327-7333. |
| [11] | Li Rongbao,Albert F Y.Effect of temperature on moisture absorption in a bismaleimide resin and its carbon fiber composites[J].Polymer,2002,43:3987-3997. |
| [12] | Patel S R,Case S W.Durability of hygrothermally aged graphite/epoxy woven composite under combined hygrothermal conditions[J].International Journal of Fatigue,2002,24:1295-1301. |
| [13] | Guedesa R M,Morais J J L,Marques A T,et al.Prediction of long-term behaviour of composite materials[J].Computers and Structures,2000,76:183-194. |
| [14] | Papanicolaou G C,Kosmidou T V,Vatalis A S,et al.Water absorption mechanism and some anomalous effects on the mechanical and viscoelastic behavior of an epoxy system[J].Journal of Applied Polymer Science,2006,99:1328-1339. |
| [15] | Chu W,Wu Lixin,Karbhari V M.Durablity evaluation of moderate temperature cured E-glass/vinylester systems[J].Composite Structures,2004,66:367-376. |
| [16] | Zhou J M,Lucas J P.Hygrothermal effects of epoxy resin Ⅰ:The nature of water in epoxy[J].Polymer,1999,40(20):5505-5512. |
| [17] | Luo H L,Lian J J,Wan Y Z,et al.Moisture absorption in VARTMed three-dimensional braided carbon-epoxy composites with different interface conditions[J].Materials Science ＆ Engineering,2006,425:70-77. |
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