Investigating the Mechanical and Thermal Relationship for Epoxy Blends

Harr, Michael; Moy, Paul; Walter, Tim; Masser, Kevin A.

doi:10.1007/978-3-319-95089-1_37

Cited by 1 publication

(2 citation statements)

References 9 publications

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“…(2) Improvement of the chemical structure of the resin. 3,7,8 Applicate flexible curing agents, such as Jeffamine, can be considered as one of the most effective methods to reduce the hardness of the epoxy network (Jeffamine is a low viscosity diamine with flexible and linear polyether backbone). 9 In addition, the usage of liquid rubbers is another successful method for reducing the hardness, improvement of the toughness, and decrease in the glass transition temperature (T g ), and modulus of the epoxy network (McGarry, first reported this method).…”

Section: Introductionmentioning

confidence: 99%

“…These methods are classified into two categories: (1) Using toughening agents, such as liquid elastomers, mineral compounds, and thermoplastics. (2) Improvement of the chemical structure of the resin 3,7,8 . Applicate flexible curing agents, such as Jeffamine, can be considered as one of the most effective methods to reduce the hardness of the epoxy network (Jeffamine is a low viscosity diamine with flexible and linear polyether backbone) 9 .…”

Section: Introductionmentioning

confidence: 99%

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Studies of thermal, mechanical properties, and kinetic cure reaction of carboxyl‐terminated polybutadiene acrylonitrile liquid rubber with diepoxy octane

Ebrahimabadi

Mehrshad

Mokhtary

et al. 2020

J of Applied Polymer Sci

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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 .

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