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2007•Journal of National University of Defense TechnologyRequires access

Study on the Curing Reaction of Epoxy Resin for RFI Process

Jiayu Xiao

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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 dαdt=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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What this paper is about

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 dαdt=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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Available 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 dαdt=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.

Key concepts: Epoxy, Curing (chemistry), Materials science, Differential scanning calorimetry, Composite material, Ultimate tensile strength, Casting, Thermodynamics

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