增强材料的渗透率是研究和模拟RTM工艺的关键参数。采用单向玻璃纤维织物，在恒定的注射压力下，通过记录树脂在织物内流动前缘椭圆长、短轴随时间的变化，利用Darcy定律测定了不同铺层方式下织物的渗透率，研究了铺层方式对织物渗透率的影响。实验证明，铺层方式改变时，织物的渗透率大小和主轴方向发生改变，其关系符合椭圆的叠加原理
The permeability of fibrous reinforcement is the important parameter for studying and simulating RTM process. In this paper, the unidirectional glass fabric was used to determine the permeability of different kinds of layers under constant injection pressure. During the experiment, the long axis and the short axis of the ellipse, which was formed by the resin flowing in the fabric, were recorded, and the Darcy's law was used to calculate the permeability. The effect of layers on permeability was studied. The results indicate that the orientation of layers influences the value and principal direction of permeability, and it can be determined by the superposition of the ellipse of each single layer.
参考文献
| [1] | ［1］ 徐敬一，马玉录. 树脂传递模塑（RTM）成型工艺及应用［J］. 中国塑料，1992，6 (2): 9-16． |
| [2] | ［2］ 吴 军，程晓宁. 工艺参数对RTM模制品质量的影响［J］. 纤维复合材料，1991，3:43-49． |
| [3] | ［3］ Chan A W， Hwang S T. Modeling of the impregnation process during resin transfer molding［J］. Polym Eng And Sci, 1991，31 (15): 1149-1156． |
| [4] | ［4］ Adams K L, Russel W B， Rebenfeld L. Radial penetration of a viscous liquid into a planar anisotropic porous medium［J］. Int J Multiphase Flow,1988，14 (2): 203-215． |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%