Rheological Studies of Reworkable Photocuring Resins
2018 年 31 巻 6 号 p. 727-733
詳細
2018 年 31 巻 6 号 p. 727-733
Rheological studies of reworkable photocuring resins were carried out using reworkable monomers. A dimethacrylate monomer containing tertiary ester units in a molecule and a methacrylate monomer, which has both an epoxy moiety and a thermally-cleavable tertiary ester moiety in a molecule, were employed as the reworkable monomers. When the cured reworkable monomers were irradiated and baked in the presence of a photoacid generator, the storage moduli of the cured resin decreased at elevated temperatures. The decreased storage moduli revealed by the rheological studies were due to the acid-catalyzed decomposition of the tertiary ester linkages in the cured reworkable monomers.
