Abstract
The expansion behavior of dismantlable adhesives including thermally expansion agents was investigated experimentally. The adhesives have capability to be separated after use by heating and is quite useful for the recycling of adhered materials. To investigate the expansion mechanism of the adhesive, the volume change of an expansion agent was measured under hydrostatic pressures. Only few MPa of expansion pressure of the agent could be measured at the condition of being included in the cured resin. Using the other organic expansion agents such as ADCA and OBSH, experiments to check their dimantability were carried out. In some cases, separation of the adherends was observed on the specimens bonded with the adhesives.
