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http://dx.doi.org/10.17702/jai.2014.15.3.100

The Thermal Properties Analysis of the Mixtures Composed with Epoxy Resin and Amine Curing Agent  

Kim, Daeyeon (Research Center for Green Fine Chemicals, Korea Research Institute of Chemical Technology)
Kim, Soonchoen (Research Center for Green Fine Chemicals, Korea Research Institute of Chemical Technology)
Park, Young-Il (Research Center for Green Fine Chemicals, Korea Research Institute of Chemical Technology)
Kim, Young Chul (Research Center for Green Fine Chemicals, Korea Research Institute of Chemical Technology)
Lim, Choong-Sun (Research Center for Green Fine Chemicals, Korea Research Institute of Chemical Technology)
Publication Information
Journal of Adhesion and Interface / v.15, no.3, 2014 , pp. 100-108 More about this Journal
Abstract
In this work, a series of molar ratios composed with YD-128 and DDM were chosen based on the viscosity analysis. The mixtures of YD-128 and DDM with the different molar ratios were cured at $170^{\circ}C$ for 15 min followed by post cure at $190^{\circ}C$ for two hours. The thermal properties of the cured samples were investigated with DSC, TGA, DMA, and TMA. The conversion ratio of the mixtures of YD-128 and DDM (1 : 1.1) was calculated by dividing ${\Delta}H$ obtained from DSC experiments for each cured sample by ${\Delta}H$. The TGA data of the cured samples showed that the thermal stability and thermal degradation activation energy were proportional to the amount of DDM in the mixtures. However, the highest tan ${\delta}$, and the lowest thermal expansion data with DMA and TMA respectively were obtained from the stoichiometric mixture of YD-128 and DDM. Furthermore, the different ratio of mixtures were applied to test specimens to be cured at $170^{\circ}C$ to measure single lap shear strength with universal testing machine.
Keywords
epoxy resin; DDM; aromatic amine; cure behavior; themal stability; storage modulus;
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Times Cited By KSCI : 3  (Citation Analysis)
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