| 引用本文: | 代晓青,曾竟成,刘钧,等.RFI用环氧树脂固化工艺研究.[J].国防科技大学学报,2007,29(3):22-26.[点击复制] |
| DAI Xiaoqing,ZENG Jingcheng,LIU Jun,et al.Study on the Curing Reaction of Epoxy Resin for RFI Process[J].Journal of National University of Defense Technology,2007,29(3):22-26[点击复制] |
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| RFI用环氧树脂固化工艺研究 |
| 代晓青, 曾竟成, 刘钧, 肖加余 |
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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: |
| 采用动态差示扫描量热(DSC)法，研究了E-44/E-21混合环氧树脂与GA-327(DDM改性芳胺)的固化过程，研究了升温速率对固化体系DSC曲线的影响，确定了该固化体系的反应动力学方程为dα/dt =2.27×104exp(- 4764.65/T)(1-α)0.861；采用最佳固化温度外推法得到E-44/E-21(6∶4)/GA-327体系的最佳固化制度为100℃/30min＋120℃/30min。按该固化制度制备的浇铸体的固化度达95.7%，拉伸强度和弯曲强度分别为62.71MPa和97.92MPa。 |
| 关键词: 树脂膜熔渗 动态差示扫描量热 环氧树脂 固化动力学 |
| DOI： |
| 投稿日期：2006-11-14 |
| 基金项目:国家“863”基金资助项目(2003AA333120) |
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| Study on the Curing Reaction of Epoxy Resin for RFI Process |
| DAI Xiaoqing, ZENG Jingcheng, LIU Jun, XIAO Jiayu |
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(College of Aerospace and Materials Engineering, National Univ. of Defense Technology, Changsha 410073, China)
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| Abstract: |
| The dynamic scanning calorimetry (DSC) method was used to determine the reaction kinetic parameters of a hybrid resin of E-44/E-21(6∶4) with GA-327 as curing agent. Effects of rate of temperature increasing on the characteristics of DSC curves were investigated. Results suggest that the reaction of the hybrid epoxy resin with GA-327 can be described by the equation of dα/dt =2.27×104exp(- 4764.65/T)(1-α)0.861, and the curing procedure is then determined as 100℃ for 30min, and then 120℃ for 30min. The degree of curing reaction of the casting bodies of the hybrid epoxy resin reaches 95.7%, and tensile strength and flexure strength of the casting body are 62.71MPa and 97.92MPa, respectively. |
| Keywords: RFI DSC epoxy resin curing kinetics |
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