吸胶膜对复合材料构件固化过程中树脂流动行为的影响

玻璃钢/复合材料 ›› 2017, Vol. 0 ›› Issue (7): 16-21.

吸胶膜对复合材料构件固化过程中树脂流动行为的影响

贺继林, 王小飞, 蒙元明

中南大学机电工程学院,长沙410006

收稿日期:2016-12-23 出版日期:2017-07-28 发布日期:2017-07-28
作者简介:贺继林(1975-),男,博士,副教授,博士生导师,研究方向为高性能复合材料制备,8m07@163.com。
基金资助:
国家“973”项目(2014CB046500)

INFLUENCE OF THE BLEEDERS ON THE RESIN FLOW DURING THE CONSOLIDATION OF RESIN MATRIX COMPOSITE STRUCTURES

HE Ji-lin, WANG Xiao-fei, MENG Yuan-ming

College of Mechanical and Electrical Engineering, Central South University, Changsha 410006, China

Received:2016-12-23 Online:2017-07-28 Published:2017-07-28

摘要/Abstract

摘要： 热固性树脂基复合材料构件成型过程中的树脂流动行为决定了其最终成型后的纤维体积分布情况,严重影响构件的最终成型质量。而吸胶膜作为预浸料中的多余树脂流出构件后的吸收载体,其材料特性对树脂的流动过程起主导作用。以吸胶膜为关注重点,基于AS4/3501-6复合材料体系,建立了厚截面复合材料构件在热压罐中固化压实的仿真模型,模型包括了固化反应、热传导和紧密压实三个模块。模型与实验中构件的压实情况对比,验证模型的可行性。通过模型计算结果研究了吸胶膜的孔隙率、渗透率及厚度等关键参数在压力、温度等工艺条件的协同作用下对树脂流动行为的影响规律。结果表明:吸胶膜的孔隙率和厚度作为吸收树脂载体的空间度量,对构件的最终压实厚度起主要作用;吸胶膜的渗透率通过树脂流动速度影响固化压实过程,渗透率过小时,构件的压实厚度明显减小。

关键词: 复合材料, 固化压实, 树脂流动, 吸胶膜

Abstract: The flow behavior of resin in the process of forming thermoset resin composites determines the volume distribution of the fiber after the final forming, which seriously affects the final forming quality of the components. As the absorption carrier of the excess resin in the prepreg, the material properties of the bleeder play an important role in the flow of the resin. Focusing on the bleeder, a simulation model is established for the consolidation and compaction of thick section composites in autoclave based on the AS4/3501 6 composite system. It contains solidification reaction module, heat conduction module and compaction module. Compared with the experiment data, the feasibility of the model was verified. The influence of the key parameters including porosity, permeability, and thickness on the flow of the resin under the synergistic action of pressure and temperature was studied by the simulation model. The results show that as the spatial measurement of the absorption resin carrier, the porosity and the thickness of the bleeder play a major role in the final compaction thickness of the composite laminates. The permeability of the bleeder influences the compaction by changing the resin flow rate. And, if the permeability is too small, the compaction thickness of the composite laminates would be decreased obviously.

Key words: composites, consolidation, resin flow, bleeder

中图分类号:

TB332

贺继林, 王小飞, 蒙元明. 吸胶膜对复合材料构件固化过程中树脂流动行为的影响[J]. 玻璃钢/复合材料, 2017, 0(7): 16-21.

HE Ji-lin, WANG Xiao-fei, MENG Yuan-ming. INFLUENCE OF THE BLEEDERS ON THE RESIN FLOW DURING THE CONSOLIDATION OF RESIN MATRIX COMPOSITE STRUCTURES[J]. Fiber Reinforced Plastics/Composites, 2017, 0(7): 16-21.

参考文献

[1] Springer G S. Resin Flow During the Cure of Fiber Reinforced Composites[J]. Journal of Composite Materials, 1982, 16(5): 400-410.
[2] Shin D D, Hahn H T. Compaction of thick composites: Simulation and experiment[J]. Polymer Composites, 2004, 25(1): 49-59.
[3] Li Y, Li M, Gu Y, et al. Numerical and Experimental Study of the Bleeder Flow in Autoclave Process[J]. Applied Composite Materials, 2011, 18(18): 327-336.
[4] 张纪奎, 郦正能, 关志东, 等.复合材料层合板固化压实过程有限元数值模拟及影响因素分析[J]. 复合材料学报, 2007, 24(2):125-130.
[5] 吕光全, 张纪奎, 程小全. 厚截面复合材料层合板固化过程数值模拟研究[C]//中国科学技术协会年会. 2010.
[6] 贺继林, 潘若阳, 王特, 等. 曲率参数对纤维增强树脂基复合材料构件固化压实的影响[J]. 复合材料学报, 2016, 33(3): 551-557.
[7] Ganapathi A S, Joshi S C, Chen Z. Simulation of bleeder flow and curing of thick composites with pressure and temperature dependent properties[J]. Simulation Modelling Practice & Theory, 2013, 32(2): 64-82.
[8] Yan X. Finite element modeling of curing of epoxy matrix composites
[J]. Journal of Applied Polymer Science, 2007, 103(103): 2310-2319.
[9] Lee W I, Loos A C, Springer G S. Heat of Reaction, Degree of Cure, and Viscosity of Hercules 3501-6 Resin[J]. Journal of Composite Materials, 1982, 16(6): 510-520.
[10] Gutowski T G. Resin flow/fiber deformation model for composites[J]. SAMPE Q. (United States), 1985, 16: 4.
[11] Young W B. Resin flow analysis in the consolidation of multi-directional laminated composites[J]. Polymer Composites, 1995, 16(3): 250-257.
[12] 王晓霞. 热固性树脂基复合材料的固化变形数值模拟[D]. 济南: 山东大学, 2012.
[13] Hubert P, Poursartip A, Hubert P, et al. A Review of Flow and Compaction Modelling Relevant to Thermoset Matrix Laminate Processing[J]. Journal of Reinforced Plastics & Composites, 1998, 17(17): 286-318.
[14] Hubert P, Poursartip A. Aspects of the Compaction of Composite Angle Laminates: An Experimental Investigation[J]. Journal of Composite Materials, 2001, 35(1): 2-26.
[15] Young W B. Compacting pressure and cure cycle for processing of thick composite laminates[J]. Composites Science & Technology, 1995, 54(3): 299-306.