Dismantlable Adhesive and Evaluation of Practical Uses for Building Materials

A new form of dismantiable adhesive technology has been developed. This is a revolutionary development in the construction industry, which makes it possible for the bonded building materials to be separated by the simple appication of heating over 100°C.This article describes the design of dismantlable adhesives (elastomer type and emulsion type) and the evaluation of uses for building materials. For the elastomer type dismantlable adhesive, the weight fraction of thermally expansive particles from 5 to 15% is suitable for both bond strength and dismantlement of joints. For the emulsion type, that from 5 to 20% is suitable for these characteristics. The bond strength of joints could not decrease after durable test at 60°C, 95%RH for 30 days. Then the joints were spparated easily by heating at from 150 to 180°C. In this technology, manufacturing process in equal to the case using conventional adhesives and the time of heating for dismantlement is quite short. So it is efficient for not only performance (adhesion and dismantlement), but also manufacturing and cost.