Similar types of fracture morphologies in CTBN
modified epoxies were already described by Pearson and Yee , but not yet for BCP toughened epoxies.
Lay & Associates, a Cincinnati, Ohio-based consultancy that specializes in organizational and leadership development Lay has served as facilitator for the CTBN
from its inception, beginning with concluding the initial research and organization-building effort in 2004.
The large domain of the CTBN
or ATBN modifier in an epoxy matrix--on the order of tens of microns--makes it impossible to toughen ultra-thin applications where the thickness of the epoxy layer is also on the order of microns," Bohen explains.
are provided by Lanzhou Chemistry Institute (Lanzhou, China).
We have found, however, that the BR nanocomposite containing both the organosilicate and the CTBN
oligomer compatibilizer enhances the mechanical properties to a degree similar to that of the nanocomposite incorporating only the organosilicate.
1C] and elastic modulus of a CTBN
-glass bead hybrid epoxy were increased by 55% and 7% respectively, at 15-phr CTBN
and 35-phr glass beads, compared with the CTBN
-modified epoxy at the same CTBN
The MY 9512 was then added to the DGEBA, CTBN
To the total base resin (epoxy resins and curing agents), liquid carboxyl terminated butadiene acrylonitrile rubber, CTBN
, Hycar 1300X13, from BF Goodrich, was added in the amount of 0, 5, 10, 15, 20 phr.
Within a certain range of composition, the rubber encapsulation is found to change the interactions between glass beads and CTBN
particles, resulting in an increase in fracture toughness.
In this work, liquid CTBN
rubber was used to toughen a standard DGEBA epoxy.
materials primarily toughen epoxy matrices through two separate mechanisms.
Bagheri and Pearson (22) have studied the interfacial phenomenon of CTBN