RFI用环氧树脂固化工艺研究
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国家“863”基金资助项目(2003AA333120)


Study on the Curing Reaction of Epoxy Resin for RFI Process
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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。

    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.

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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.
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.

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  • 收稿日期:2006-11-14
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  • 在线发布日期: 2013-02-28
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