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2003•Acta Aeronautica Et Astronautica SinicaRequires access

Study on Cyanate Ester/Epoxy Resin/Novolac Resin Co-Curing System

Jie Yang

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Abstract

The!kinetics and properties of bisphenol A dicyanate ester/epoxy resin/novolac resin system were discussed. Differential scanning calorimetry(DSC),Kissinger equation and Ozawa equation were employed to detect the kinetics of cocuring system. The apparent reactive activation energy(Ea)was 6294kJ/mol, and velocity constant of reaction under 25℃(K25℃) was 984×10-5 Dielectric and mechanical properties of the laminate composite reinforced by Eglass were investigated. The results showed that composite of cocuring system possess excellent integrated properties. Compared with composition based on cyanate ester/E51 system,inclusion of 15wt% novolac resin led to 6% and 15% increase in the flexural strength and interlaminar shear strength, respectively. The dielectric loss and water absorption decreased 33% and 8%, respectively.

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What this paper is about

The!kinetics and properties of bisphenol A dicyanate ester/epoxy resin/novolac resin system were discussed. Differential scanning calorimetry(DSC),Kissinger equation and Ozawa equation were employed to detect the kinetics of cocuring system. The apparent reactive activation energy(Ea)was 6294kJ/mol, and velocity constant of reaction under 25℃(K25℃) was 984×10-5 Dielectric and mechanical properties of the laminate composite reinforced by Eglass were investigated. The results showed that composite of cocuring system possess excellent integrated properties. Compared with composition based on cyanate ester/E51 system,inclusion of 15wt% novolac resin led to 6% and 15% increase in the flexural strength and interlaminar shear strength, respectively. The dielectric loss and water absorption decreased 33% and 8%, respectively.

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Available abstract

The!kinetics and properties of bisphenol A dicyanate ester/epoxy resin/novolac resin system were discussed. Differential scanning calorimetry(DSC),Kissinger equation and Ozawa equation were employed to detect the kinetics of cocuring system. The apparent reactive activation energy(Ea)was 6294kJ/mol, and velocity constant of reaction under 25℃(K25℃) was 984×10-5 Dielectric and mechanical properties of the laminate composite reinforced by Eglass were investigated. The results showed that composite of cocuring system possess excellent integrated properties. Compared with composition based on cyanate ester/E51 system,inclusion of 15wt% novolac resin led to 6% and 15% increase in the flexural strength and interlaminar shear strength, respectively. The dielectric loss and water absorption decreased 33% and 8%, respectively.

Key concepts: Cyanate ester, Epoxy, Curing (chemistry), Materials science, Differential scanning calorimetry, Bisphenol A, Composite material, Flexural strength

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