TTT-diagram for epoxy film adhesives using quasi-isothermal scans with initial fast ramps

2017 ◽  
Vol 135 (9) ◽  
pp. 45791 ◽  
Author(s):  
John Puentes ◽  
Alexander Chaloupka ◽  
Natalie Rudolph ◽  
Tim A. Osswald
Keyword(s):  
CIM Journal ◽  
2015 ◽  
Vol 6 (1) ◽  
pp. 42-50 ◽  
Author(s):  
K. Ebrahimi-Nasrabadi ◽  
M. Barati ◽  
P. W. Scott

2014 ◽  
Vol 55 (9) ◽  
pp. 2073-2088 ◽  
Author(s):  
Nora Catalina Restrepo-Zapata ◽  
Tim A. Osswald ◽  
Juan Pablo Hernández-Ortiz

2008 ◽  
Vol 1104 ◽  
Author(s):  
Jason R Jeffries ◽  
Kerri J. M. Blobaum ◽  
Mark A. Wall ◽  
Adam J. Schwartz

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.


1988 ◽  
Vol 26 (4) ◽  
pp. 315-336 ◽  
Author(s):  
H. Dodiuk ◽  
S. Kenig ◽  
N. Fin Rafael

1989 ◽  
Vol 154 ◽  
Author(s):  
John K. Gillham

AbstractA review of research in the author's laboratory on the conversion of reactive liquids to amorphous polymeric glasses is presented. Inter-relationships between reactants, reaction conditions, and subsequent material properties of thermosetting and high Tg polymers are discussed from the point of view of a generalized time-temperature-transformation (TTT) diagram.


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