Abstract
Cyanate ester (CE) -3,3′-bis (3-maleimidophenyl) phenyl phosphine oxide (BMI)-modified epoxy matrices were made by using epoxy resin (DGEBA) and 1,3-dicyantobenzene and diaminodiphenyl methane as a curing agent. The properties of BMI-CE epoxy matrices were characterized by differential scanning calorimetry (DSC), thermogravimetric analysis, scanning electron microscopy, water absorption behavior and heat deflection temperature. The matrices were also characterized for their mechanical properties such as tensile strength, flexural strength and unnotched Izod impact strength by ASTM methods. The mechanical and tensile properties were improved by increasing the percentage of the CE in the epoxy resin. DSC thermograms of 1,3-dicyantobenzene as well as BMI-modified epoxy resin showed an unimodal reaction exothermicity.
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