Epoxy resins, despite their unique properties, have limitations in many applications due to their low fracture toughness. One of the most effective methods to overcome this limitation is to use toughening agents, such as carboxyl terminated poly butadiene-acrylonitrile (CTBN) in the epoxy matrix. CTBN can react with various compounds, such as epoxies. In this study, we investigated the severity of CTBN sedimentation with di epoxy octane (DEO) in the presence basis catalysts. The studied of the physical properties of the synthesized copolymer in the presence of pyridine compared to other catalysts increases mechanical properties (248.43% elongation, 0.63 MPa strength, and 32 hardness with Shore A) and decreases the glass transition temperature (−45.1) of the copolymer. Investigated the cure kinetics of the CTBN-DEO reaction was in the presence of pyridine using a nonisothermal technique of differential scanning calorimetry, and the curing kinetic parameters, such as activation energy (E a), pre-exponential factor (A), and rate constant (k), were calculated by different kinetic methods. The obtained curing kinetic values with different kinetic methods are well-matched, the E a values are in the range of 91.3-97.1 kJ.mol −1 and the A values are in the range of 0.48 × 10 11-1.51 × 10 11 S −1 .
Epoxidation os liquid carboxyl-terminated butadiene acrylonitrile (CTBN) rubber was done using hydrogen peroxide and Acetic acid, and different degrees of epoxidation was used to curing and harden the epoxy resin. Using H-NMR and also FTIR methods, Epoxy of the double resin bonds used
was investigated. According to the data obtained from these two methods, some available dual links are epoxy and ready for use in the mentioned applications. The peaks appeared at 1070, and 1230 cm-1 in the FTIR spectrum of ECTBN are attributed to the epoxy groups. In the HNMR spectrum
of CTBN, two new signals have appeared at 2.69 ppm and 2.93 ppm, which are attributed to the protons of epoxy groups with Cis and trans configurations, respectively. Epoxy resin has been used as an electrical insulator for burying electronic boards and insulating telecommunication components
and electrochemical sensors (paste electrodes structure and screen printed electrodes) due to its properties such as high breakdown voltage resistance, water-resistance and resistance to chemicals, resistance to thermal and electrical shocks.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.