Mechanical Properties of DGEBA/Amidoamine Blend at Non-Stoichiometric Ratios

2014 ◽  
Vol 597 ◽  
pp. 63-71
Author(s):  
Britto Satheesh ◽  
Nick Warrior ◽  
Kim Yeow Tshai

In this paper, the effect of varying mixing ratio of Diglycidyl ether of bisphenol A (DGEBA)/aliphatic amidoamine hardener on the behavior of dynamic cure profile and mechanical properties of the resulting thermoset was investigated. Epoxy/hardener sample with a stoichiometric mixing ratio of 2:1 are tested against non-stoichiometric ratios of 3:1 and 4:1. The tensile, flexural, and hardness properties of the specimens were measured while SEM is employed to investigate the fracture surface and analyze the failure. Results showed that epoxy enriched samples (non-stoichiometric) has a much brittle behavior and the DGEBA/hardener samples tend to fail under relatively small strain.

2019 ◽  
Vol 137 (8) ◽  
pp. 48404 ◽  
Author(s):  
Zahra Baig ◽  
Nadia Akram ◽  
Khalid Mahmood Zia ◽  
Muhammad Saeed ◽  
Muhammad Kaleem Khosa ◽  
...  

2015 ◽  
Vol 22 (6) ◽  
Author(s):  
Yasser Rostamiyan ◽  
Abdolhossein Fereidoon ◽  
Amin Hamed Mashhadzadeh

AbstractThis study investigated the effect of four different types of reinforcements on the mechanical properties of an epoxy system. The epoxy resin used was diglycidyl ether of bisphenol A (DGEBA) cured by cycloaliphatic polyamine. These four mechanisms use a multi-wall carbon nanotube (MWCNT) as a nanofiber, clay as a nanolayer, SiO


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