RTM成型工艺中纤维体积密度不均匀性对树脂流动的影响

玻璃钢/复合材料 ›› 2017, Vol. 0 ›› Issue (10): 62-67.

RTM成型工艺中纤维体积密度不均匀性对树脂流动的影响

詹东,杨睿^*,孙士勇

大连理工大学机械工程学院,大连116024

收稿日期:2017-03-09 出版日期:2017-10-20 发布日期:2017-10-20
通讯作者: 杨睿(1974-),男,博士,教授,主要从事复合材料方面的研究,yangrui@dlut.edu.cn。
作者简介:詹东(1991-),男,硕士研究生,主要从事复合材料方面的研究。

EFFECT OF FIBER VOLUME DENSITY HETEROGENEITY ON RESINFLOW IN RTM MOLDING PROCESS

ZHAN Dong, YANG Rui^*, SUN Shi-yong

School of Mechanical Engineering, Dalian University of Technology, Dalian 116024, China

Received:2017-03-09 Online:2017-10-20 Published:2017-10-20

摘要/Abstract

摘要： 主要研究局部区域纤维体积密度改变对树脂流动前沿的影响。利用RTM-Worx模拟仿真软件,分析局部渗透率对流动前沿的变化及对填充该区域所用时间的影响规律。在模拟仿真的基础上,通过添加不同厚度垫片改变局部区域纤维体积密度,以对模拟仿真结果进行实验验证。仿真与实验结果表明:当局部纤维体积密度增大到一定值之后,该局部区域流动前沿出现包络现象,并且树脂填充该局部区域所用时间也开始急剧增加;当纤维体积密度继续增大时,该区域会出现树脂填充不完整的现象,最终导致制件出现干斑缺陷。

关键词: RTM, 纤维体积密度, 流动前沿, 渗透率, 干斑

Abstract: In this paper, the influence law of permeability change caused by local fiber volume density on the resin flow front has been investigated. Effects of the local permeability on the flow front and the time of resin filling the local region have been simulated using the commercial software RTM-Worx, respectively. For further verification, the corresponding experiments are designed. In the verification experiments, spacers with different thicknesses have been adopted to change the local fiber volume density. And, good agreements between the simulated and the experimental results can be observed. Both simulation and experimental results show that the time of resin filling the local region increases sharply when the local fiber volume density increases to a certain value. And, if the volume density continues increasing, the region will appear incomplete resin filling, resulting in the phenomenon of the final parts with dry spot defects.

Key words: resin transfer molding, fiber volume density, permeability, flow front, dry spot

中图分类号:

TB332

詹东,杨睿,孙士勇. RTM成型工艺中纤维体积密度不均匀性对树脂流动的影响[J]. 玻璃钢/复合材料, 2017, 0(10): 62-67.

ZHAN Dong, YANG Rui, SUN Shi-yong. EFFECT OF FIBER VOLUME DENSITY HETEROGENEITY ON RESINFLOW IN RTM MOLDING PROCESS[J]. Fiber Reinforced Plastics/Composites, 2017, 0(10): 62-67.

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