BMI树脂化学流变模型及RTM工艺窗口预报研究

段跃新; 张宗科; 梁志勇; 林云; 赵渠森; 孙冬生; 谢富元

BMI树脂化学流变模型及RTM工艺窗口预报研究

1.
北京航空航天大学104教研室, 北京 100083;
2.
北京航空工艺研究所, 北京 100024

基金项目: 自然科学基金No.59773004及No.59833110资助项目

详细信息

作者简介:
段跃新(1970),男,讲师,从事复合材料低成本制造工艺研究。

中图分类号: TB332
计量
- 文章访问数: 1966
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出版历程
- 收稿日期: 2000-08-03
- 修回日期: 2000-10-07
- 刊出日期: 2001-08-14

RHEOLOGICAL MODEL AND PREDICTION OF PROCESSING WINDOWS OF BMI RESIN FOR RTM PROCESSES

1.
Beijing University of Aeronautics and Astronautics, Beijing 100083,China;
2.
Beijing Aeronautics Technical Institute, Beijing 100024,China

摘要

摘要: 研究用于航空结构复合材料的RTM工艺专用双马来酰亚胺树脂(BMI)体系化学流变特性,并建立其双阿累尼乌斯流变模型。模型对树脂粘度的模拟结果与实验结果具有良好的一致性。所建立的粘度模型可有效模拟该树脂在不同工艺条件下的粘度行为,准确预报树脂体系的低粘度工艺窗口,为优化RTM工艺参数和保证产品质量提供必要的科学依据。
- 复合材料 /
- RTM工艺 /
- BMI树脂 /
- 流变模型
Abstract: The chemorheological behaviors of bismaleimide resin (QY8911-4) for Resin Transfer Molding (RTM) were studied. A chemorheological model of the resin was developed based on dual-arrhenius equation. The estimated viscosity values of the established model are in good agreement with the experimental ones.The model was used to determine the critical low viscosity windows of the resin system for RTM processes. The optimum processing parameters of QY8911-4 resin for RTM are 100 ℃~110 ℃ at which the viscosity of the resin will be less than 200 cP within 55 minutes. These parameters are essential for the manufacture of structure composites with high fiber content. The longer pot life of the resin also can be obtained with low working temperature between 90 ℃ and 100 ℃, in which the viscosity of the resin can keep less than 800 cP. The developed model is important for processing simulation, parameter optimization and quality control for RTM processes.
- composites /
- RTM /
- BMI /
- manufacture