通过改变纤维层数来改变纤维织物的孔隙率,采用一维饱和流动方法测量了风力发电叶片用玻璃纤维织物(WindstrandTM)三个方向(x、y和z)的饱和渗透率大小.考察了孔隙率、模具尺寸以及纤维方向(平行于和垂直于2%的纤维束两个方向)对其饱和渗透率的影响.结果表明:渗透率随孔隙率的降低而迅速降低;当孔隙率为34.6%~54.7%时,模具尺寸对y向饱和渗透率影响不大;改变2%的纤维束方向(由平行到垂直),当孔隙率为34.6%~54.7%时,对饱和渗透率有一定影响.当孔隙率为45%~55%时,玻璃纤维织物x和y方向的饱和渗透率约为z方向饱和渗透率的3~7倍.
参考文献
[1] | Zhou G,Movva S,Guerra D,Lee L J.Preparation and properties of nano-particle and long fiber reinforced thermoset composites[C]//Proceedings of ANTEC 2007.Cincinnati,OH:ANTEC,2007. |
[2] | Veers P S,Ashwill T D,Sutherland H J,et al.Trends in the design,manufacture and evaluation of wind turbine blades[J].Wind Energy,2003,6(3):245-259. |
[3] | Kris H,Daniela D.New set-up for permeability properties of fibrous reinforcement for RTM[J].Composite Part A,2002,33(1):959-969. |
[4] | 段华军,马会茹.RTM工艺国内外研究现状[J].玻璃钢/复合材料,2000(5):462-471.Duan Huajun,Ma Huiru.Research status of RTM process at home and abroad[J].Fiber Reinforced Plastic/Composite,2000(5):462-471. |
[5] | Long A C.Process modeling for liquid moulding of braided preforms[J].Composites Part A,2001,32(7):941-953. |
[6] | 戴福红,张博明,杜善义.基于均匀化方法的单向纤维增强体渗透率预报[J].力学学报,2004,36(6):709-713.Dai Fuhong,Zhang Boming,Du Shanyi.Permeability estimation of unidirectional reinforcements based on the homogenization theory[J].Acta Mechanica Sinica,2004,36(6):709-713. |
[7] | 李嘉禄,吴晓青,冯驰.RTM中纤维渗透率预测的研究进展[J].复合材料学报,2006,23(6):1-8.Li Jialu,Wu Xiaoqing,Feng Chi.Research progress on the permeability prediction of fiber in RTM[J].Acta Materiae Compositae Sinica,2006,23(6):1-8. |
[8] | 陈萍,李宏运,陈祥宝.铺层方式对织物渗透率的影响[J].复合材料学报,2001,18(1):30-33.Chen Ping,Li Hongyun,Chen Xiangbao,Effect of layers on permeability[J].Acta Materiae Compositae Sinica,2001,18(1):30-33. |
[9] | Chan A W,Hwang S T.Modeling of impregnation process during resin transfer molding[J].Polymer Engand Sci,1991,31(15):1149-1156. |
[10] | Parnas R S,Flynn K M,Dal-Favero M E.A permeability database for composite manufacturing[J].Polymer Composites,1997,18(5):623-633. |
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