摘要
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。
Through changing the number of glass fiber mat layers to control the porosity, the saturated permeability of WindstandTM glass fiber in-plane and trans directions(x, y and z)was measured by the unidirectional saturated flow method. The influence of porosity, mold dimension and fibers direction (parallel and vertical 2% extra fibers tows) which affect the permeability were investigated. The results indicate that with the decrease of porosity, the permeability drops sharply. The effect of mold dimension has little influence of y direction permeability when porosity between 34.6%-54.7 %. Changing 2 % extra fibers tows direction (from parallel to vertical), has an effect on permeability when the porosity between 34.6 %- 54.7 %. When porosity range is 45 %- 55 %, the permeability in-plane direction is about 3 - 7 times as high as that in transone.
出处
《复合材料学报》
EI
CAS
CSCD
北大核心
2013年第4期245-249,共5页
Acta Materiae Compositae Sinica
基金
国家自然科学基金(11172271)
973项目(2012CB025904)
国家基金委在留美期间的资助
关键词
玻璃纤维
RTM
复合材料
饱和渗透率
单向流动
glass fibres
RTM
composites
saturated permeability
unidirectional flow
mold