| 引用本文: | 刘卓峰,肖加余,曾竟成,等.低粘度环氧树脂VIMP工艺性能研究.[J].国防科技大学学报,2008,30(5):20-24.[点击复制] |
| LIU Zhuofeng,XIAO Jiayu,ZENG Jingcheng,et al.A Study of Processing Properties of an Epoxy Resin System Used in VIMP[J].Journal of National University of Defense Technology,2008,30(5):20-24[点击复制] |
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| 低粘度环氧树脂VIMP工艺性能研究 |
| 刘卓峰, 肖加余, 曾竟成, 江大志, 刘钧 |
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(国防科技大学 航天与材料工程学院，湖南 长沙 410073)
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| 摘要: |
| VIMP(真空注射模塑)工艺以其低成本、环保和适于大型制件一次整体成型等优点得到了广泛应用。本文对VIMP工艺用低粘度环氧树脂体系进行了固化反应动力学和粘度分析，确定了最佳固化温度，建立了树脂体系的流变模型，模型分析结果与实验结果吻合较好，根据此流变模型预报了工艺窗口。并进行了VIMP模塑板材工艺实验，测试了板材的纤维体积含量和力学性能。 |
| 关键词: VIMP 环氧树脂 固化动力学 流变特性 力学性能 |
| DOI： |
| 投稿日期：2008-04-21 |
| 基金项目:国家“863”基金资助项目(2007AA03Z563) |
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| A Study of Processing Properties of an Epoxy Resin System Used in VIMP |
| LIU Zhuofeng, XIAO Jiayu, ZENG Jingcheng, JIANG Dazhi, LIU Jun |
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(College of Aerospace and Materials Engineering, National Univ. of Defense Technology, Changsha 410073, China)
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| Abstract: |
| VIMP (Vacuum Infusion Molding process) is widely used because it has many advantages, such as low cost, environmental protection and suitable for holistic mould of large composite structures. Curing reaction and rheological behavior of a low viscosity epoxy resin system were studied by DSC and viscosity experiments and an optimum curing temperature was found for the resin system. Based on Dual-Arrhenius equation, a rheological model of the resin system was established, and predicted viscosity values of the resins were in good agreement with the results of the experimental results. The low viscosity processing window for the VIMP was determined by the rheological model. A GFRP laminate was fabricated by the VIMP, and the fiber volume content and mechanical strength of the laminate composites were investigated. |
| Keywords: VIMP epoxy resin cure kinetics rheological behavior mechanical properties |
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