Phenolic Epoxy Resin Viscosity: YLEP-631 vs YLEP-638
Phenolic epoxy resin viscosity is a flow property that separates YLEP-631 from YLEP-638. YLEP-631 is a liquid measuring 1,100-1,700 mPa·s at 52 °C; YLEP-638 is semi-solid, with a 36-40 °C softening point. Their EEW windows overlap at …