Thermal reversible rheology behaviors of biscarbamates-containing uncured epoxy composite pastes

We investigated the rheology behaviors of diglycidyl ether of bisphenol-A (epoxy resin) composite pastes with various biscarbamates and compared them with those of epoxy composites with fumed SiO 2 . Thermal and rheological measurements showed thermal reversible rheology behaviors of shear thinning for all epoxy composites with various biscarbamates. Some biscarbamates endowed their epoxy composites’ stronger shear thinning behaviors than fumed silica did even at the low concentrations. Polarized microscopic, FT-IR, and DSC analyses demonstrated that excellent rheological responses of biscarbamates in epoxy composite pastes could be attributed to their various crystallization self-assemblies formed in epoxy matrix by the intermolecular interactions mainly including hydrogen bonding and van der Waals interactions, and these interactions were closely related to the molecular structures of biscarbamates.