Time–temperature-transformation (TTT) diagram of the isothermal crosslinking of an epoxy/amine system: Curing kinetics and chemorheology

2008 ◽  
Vol 108 (5) ◽  
pp. 2908-2916 ◽  
Author(s):  
E. Mounif ◽  
V. Bellenger ◽  
A. Tcharkhtchi
Keyword(s):  
Curing Kinetics ◽  
Ttt Diagram ◽  
Epoxy Amine ◽  
Amine System ◽  
Temperature Transformation

scholarly journals Time-temperature-transformation (TTT) diagram of a dual-curable off-stoichiometric epoxy-amine system with latent reactivity

2018 ◽  
Vol 666 ◽  
pp. 124-134 ◽  
Author(s):  
Núria Areny ◽  
Osman Konuray ◽  
Xavier Fernàndez-Francos ◽  
Josep M. Salla ◽  
Josep M. Morancho ◽  
...  
Keyword(s):  
Ttt Diagram ◽  
Epoxy Amine ◽  
Amine System ◽  
Temperature Transformation

scholarly journals Time-temperature-transformation (TTT) diagram of dual-curable epoxy thermosets obtained via two sequential epoxy-amine condensations

2019 ◽  
Vol 678 ◽  
pp. 178305 ◽  
Author(s):  
Osman Konuray ◽  
José M. Salla ◽  
José M. Morancho ◽  
Xavier Fernández-Francos ◽  
Montserrat García-Alvarez ◽  
...  
Keyword(s):  
Ttt Diagram ◽  
Epoxy Amine ◽  
Temperature Transformation

Time-temperature-transformation (TTT) diagram of caustic calcined magnesia

CIM Journal ◽  
2015 ◽  
Vol 6 (1) ◽  
pp. 42-50 ◽  
Author(s):  
K. Ebrahimi-Nasrabadi ◽  
M. Barati ◽  
P. W. Scott
Keyword(s):  
Ttt Diagram ◽  
Temperature Transformation

CRIMPS in an Epoxy–Amine System as Studied by ESR

2020 ◽  
pp. 279-287
Author(s):  
Boris E. Krisyuk ◽  
Boris A. Rozenberg
Keyword(s):  
Epoxy Amine ◽  
Amine System

Temperature Dependence of the Behavior of a Reactive Epoxy−Amine System by Means of Dynamic Rheology. 2. High-TgEpoxy−Amine System

1996 ◽  
Vol 29 (21) ◽  
pp. 6917-6927 ◽  
Author(s):  
Jean-Pascal Eloundou ◽  
Jean-François Gerard ◽  
Daniel Harran ◽  
Jean Pierre Pascault
Keyword(s):  
Temperature Dependence ◽  
Dynamic Rheology ◽  
Epoxy Amine ◽  
Amine System

scholarly journals Ambient-temperature Conditioning as a Probe of Double-C Transformation Mechanisms in Pu-2.0 at. % Ga

2008 ◽  
Vol 1104 ◽  
Author(s):  
Jason R Jeffries ◽  
Kerri J. M. Blobaum ◽  
Mark A. Wall ◽  
Adam J. Schwartz
Keyword(s):  
Ttt Diagram ◽  
Optimal Conditioning ◽  
High Temperature Anneal ◽  
Conditioning Treatment ◽  
Conditioning Temperature ◽  
Δ Phase ◽  
Transformation Mechanisms ◽  
Temperature Transformation ◽  
Underlying Mechanisms ◽  
Kinetics Of

AbstractThe gallium-stabilized Pu-2.0 at. % Ga alloy undergoes a partial or incomplete low-temperature martensitic transformation from the metastable δ phase to the gallium-containing, monoclinic α′ phase near -100 °C. This transformation has been shown to occur isothermally and it displays anomalous double-C kinetics in a time-temperature-transformation (TTT) diagram, where two nose temperatures anchoring an upper- and lower-C describe minima in the time for the initiation of transformation. The underlying mechanisms responsible for the double-C behavior are currently unresolved, although recent experiments suggest that a conditioning treatment—wherein, following an anneal at 375 °C, the sample is held at a sub-anneal temperature for a period of time—significantly influences the upper-C of the TTT diagram. As such, elucidating the effects of the conditioning treatment upon the δ⟶α′ transformation can provide valuable insights into the fundamental mechanisms governing the double-C kinetics of the transition. Following a high-temperature anneal, a differential scanning calorimeter (DSC) was used to establish an optimal conditioning curve that depicts the amount of α′ formed during the transformation as a function of conditioning temperature for a specified time. With the optimal conditioning curve as a baseline, the DSC was used to explore the circumstances under which the effects of the conditioning treatment were destroyed, resulting in little or no transformation.

scholarly journals Design and Assessment of a Lightweight Polymer Concrete Utility Manhole

2019 ◽  
Vol 2019 ◽  
pp. 1-12 ◽  
Author(s):  
Luciano Leonardi ◽  
Teresa M. Pique ◽  
Tomas Leizerow ◽  
Humberto Balzamo ◽  
Celina Bernal ◽  
...  
Keyword(s):  
Portland Cement ◽  
Wall Thickness ◽  
Chemical Resistance ◽  
Mechanical Performance ◽  
Minimum Weight ◽  
Polymer Concrete ◽  
Portland Cement Concrete ◽  
Epoxy Amine ◽  
Amine System ◽  
Typical Soil

Polymer concrete is a composite using polymer instead of portland cement as a binder. It allows optimizing the tensile and cracking strength and the chemical resistance of a concrete structure. In this study, different formulations were assessed in order to optimize a polymer concrete underground utility manhole with minimum weight. Formulations were based on an epoxy-amine system mixed with fine regular-weight aggregates and ultralightweight aggregates. The objective was to design and assess an underground utility structure with the epoxy chemical resistance, strength, and lightweight and to study whether the replacement of regular-weight aggregates by ultralightweight aggregates would contribute to improve the strength and reduce the structure weight. Two polymer concrete systems were designed from its formulation, and their mechanical performance was evaluated experimentally. A numerical model was developed for a polymer concrete underground utility structure made from the different formulations. It was simplified as a box subjected to typical soil loads. The size of the box is a standard one. Its minimum wall thickness is specified for sustaining the in-use service pressures obtained from numerical simulation. The model predicted that the epoxy/regular-weight aggregate formulation could be used with a wall thickness significantly smaller than the formulation with ultralightweight aggregates. In addition, the underground utility structure made with this formulation would weigh six times less than the same box made with a traditional portland cement concrete.

Mesoscopic Heterogeneity in the Curing Process of an Epoxy–Amine System

2019 ◽  
Vol 52 (5) ◽  
pp. 2075-2082 ◽  
Author(s):  
Mika Aoki ◽  
Atsuomi Shundo ◽  
Riichi Kuwahara ◽  
Satoru Yamamoto ◽  
Keiji Tanaka
Keyword(s):  
Curing Process ◽  
Epoxy Amine ◽  
Amine System
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