THERMOSETTING BINDER FOR FIBROUS INSULATING MATERIALS

Abstract

Statement of the problem. The modernization of insulation systems if engineering structures, including pipelines and industrial facilities, is aimed both at solving the general problems of energy efficiency, as well as the particular tasks of heat saving and environmental safety. In this regard, the development and use of a binder that cures at much lower temperatures and does not contain phenols is an urgent task. Results. An experiment conducted to assess the effect on adhesion to various surfaces of a complex binder, cured in the temperature range from 80 to 140 °C, allowed us to determine the optimal flow rate of the latent component and modifier, which were respectively 3.6--4.0 % and 2.6±0.1 % by weight of a binder at an optimal heat treatment temperature of 100 °C. The calculation established that when switching from heat treatment at 250 °C to heat treatment at 100 °C, direct heat costs are reduced by 60 %, and energy costs for the manufacture of mineral wool cylinders by 20--30 %. Conclusion . The possibility of using epoxy glue on latent hardeners as a binder for highly porous systems with the distribution and curing of this binder on thin mineral fibers was justified theoretically and confirmed experimentally. The characteristic parameters of the curing process were determined, the duration of which decreases with increasing temperature and the content of latent hardener.