Optimized epoxy foam interface of CFRP/Epoxy Foam/CFRP sandwich composites for improving compressive and impact properties

• DOI: 10.1016/j.jmrt.2021.01.015
• Publication Date: 2021-01-12T21:34:39Z
• Authors: Dong-Jun Kwon; Jong-Hyun Kim; K. Lawrence DeVries; Joung-Man Park
• Keywords: Mining engineering. Metallurgy; Sandwich composite; Fabrication process; Epoxy foam (EF); TN1-997; Micro-mechanics; 02 engineering and technology; 0210 nano-technology; 7. Clean energy

Composite materials for vehicle parts require lightweight, high strength and good impact properties. In this study, the optimized manufacturing conditions of epoxy foam (EF) were investigated to improving mechanical performance carbon fiber reinforced plastic (CFRP)/EF/CFRP sandwich composites such as impact, flexural property. The optimal curing temperature was found be 60 °C, by measuring reaction rate, volume increase density, cell size, glass transition temperature, specific compressive EF. addition, foams after 180 °C thermal aging observed, properties EF cured at most stable under aging. using compressive, strength, lap shear tests. condition correlated interfacial adhesion composite.