对用于RTM工艺的EPON862环氧树脂体系的化学流变特性进行研究，并根据双阿累尼乌斯方程，建立树脂体系的流变模型。粘度模型与实验结果具有良好的一致性。模型可揭示树脂体系在不同工艺条件下的粘度行为，定量预报RTM工艺树脂的低粘度平台工艺窗口，为合理制定RTM工艺参数、保证产品质量和实现工艺参数的全局优化提供了必要的科学依据
In this paper, the rheological behavior of epoxy resin (EPON862) for resin transfer molding (RTM) was studied with DSC analysis and viscosity experiments. A rheological model based on dual-Arrhenius equation was established and used to simulate rheological behavior of the resin. The estimated viscosity of the model was in good agreement with that of the experiments. The processing window of the resin system can be well determined for the process based on the developed model. It is shown that the optimum processing temperature of the EPON862 resin for RTM process is 50℃, at which the resin can keep the viscosity less than 300 cP for 50 min. The rheological model is important for processing simulation and quality control of RTM processing for high performance composites.
参考文献
| [1] | ［1］ 梁志勇， 段跃新, 张佐光. RTM工艺技术及应用报告（技术鉴定报告）［R］. 北京:北京航空航天大学104教研室，1994. |
| [2] | ［2］ Beckwith S W, Craig R H. Resin transfer molding, a decade of technology advances ［J］. SAMPE Journal， 1998,34(6): 3-23. |
| [3] | ［3］ Shanku R, Vaughan J G, Roux J A. Rheological characteristics and cure kinetics of EPON862/W epoxy used in pultrution［J］. Advances in Polymer Technology, 1997, 16(4): 297-311. |
| [4] | ［4］ Gutowski T G. Advanced composites manufacturing ［M］． New York： John Wiley & Sons Inc， 1997． 393-457. |
| [5] | ［5］ Rudd C D, Long A C, Kendall K N, et al. Liquid moulding technologies［M］． London: Woodhead Publishing Ltd， 1997. 23-28. |
| [6] | ［6］ Loos A C, Springer G S. Curing of epoxy matrix composites［J］. Journal of composite materials, 1983,17(3): 135-167. |
| [7] | ［7］ Halley P J, Mackay M E. Chemorheology of thermoset——an overview［J］. Polymer engineering and science, 1996, 36(5): 593-608. |
| [8] | ［8］ Panagiotis I K, Ivana K P, Attwood David. Modeling the cure of a commercial epoxy resin for applications in resin transfer molding［J］. Polymer International, 1996, 41(2): 183-191. |
| [9] | ［9］ Eckold C. Design and manufacture of composite structure［M］. New York: McGraw-Hill Inc, 1994. 271-277. |
| [10] | ［10］ Kamal M R, Sourour C. Kinetics and thermal characterization of themoset cure［J］. Polymer Engineering and Science. 1973(1): 58-77. |
| [11] | ［11］ Lipshitz S D, Macosko C W. Rheological changes during a urethane network polymerization［J］． Polymer Engineering and Science, 1976(16): 26-38. |
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