TY - GEN
T1 - Thermal behaviors and fracture toughness of polyurethane-dispersed difunctional epoxy resins
AU - Park, Soo Jin
AU - Lee, Jae Rock
PY - 2008
Y1 - 2008
N2 - In this work, the thermal and mechanical interfacial properties of diglycidylether of bisphenol A (DGEBA)/polyurethane modified epoxy (UME-305) blends were investigated. 4,4'-Diaminodiphenyl methane (DDM) was used as a curing agent, and the content of UME-305 in the mixture was 0, 20, 40, 60, 80, and 100 wt%. The cure behaviors of DGEBA/UME-305 blends were studied by DSC. The mechanical interfacial properties were confirmed by critical stress intensity factor (KIC) at 77K and 298K. As a result, the exothermic peaks in DSC results were shifted to higher temperature region as increasing the UME-305 content in the blends. The KIC was also enhanced with increasing the UME-305 content and showing a maximum value at 60 wt.% UME-305.
AB - In this work, the thermal and mechanical interfacial properties of diglycidylether of bisphenol A (DGEBA)/polyurethane modified epoxy (UME-305) blends were investigated. 4,4'-Diaminodiphenyl methane (DDM) was used as a curing agent, and the content of UME-305 in the mixture was 0, 20, 40, 60, 80, and 100 wt%. The cure behaviors of DGEBA/UME-305 blends were studied by DSC. The mechanical interfacial properties were confirmed by critical stress intensity factor (KIC) at 77K and 298K. As a result, the exothermic peaks in DSC results were shifted to higher temperature region as increasing the UME-305 content in the blends. The KIC was also enhanced with increasing the UME-305 content and showing a maximum value at 60 wt.% UME-305.
KW - Difunctional epoxy
KW - Mechanical interfacial properties
KW - Polyurethane modified epoxy
UR - http://www.scopus.com/inward/record.url?scp=45749142858&partnerID=8YFLogxK
U2 - 10.4028/3-908451-48-5.43
DO - 10.4028/3-908451-48-5.43
M3 - Conference contribution
AN - SCOPUS:45749142858
SN - 9771012039401
T3 - Solid State Phenomena
SP - 43
EP - 46
BT - Nanocomposites and Nanoporous Materials VIII - ISNNM8 - Selected, peer reviewed papers from the 8th International Symposium on Nanocomposites and Nanoporous Materials (ISNNM8)
PB - Trans Tech Publications Ltd
T2 - 8th International Symposium on Nanocomposites and Nanoporous Materials 2007, ISNNM8
Y2 - 22 February 2007 through 24 February 2007
ER -