Разработка составов и технологии получения теплоизолирующих покрытий для оборудования, работающего при высоких температурах

Abstract

Long-term researches of granulate heat-insulating materials are carried out at the department of technology of glass and ceramics. The results of it researches is waterproof silicate granulated foam-made material with microcellular structure and it bulk weight is 150–250 kg/m3. This material is used as excipient for producing a flameproof heat-insulating coating of the equipment working at temperatures up to 700 ºC. The main objective of researches is development of the compositions including an excipient (polysilikate binding), softeners and also additives for improvement of adhesion of a covering to the surface of the equipment. Main requirement to composition: foaming at rather low temperatures (150–250 °C) due to heat allocated by an inventory. Thus, the developed flameproof compositions fall into categories self-foaming after causing. In this regard the excipient as a part of the offered compositions can be used in the form of primary not frothed granules that provides decrease in expenses. The developed method of receiving a heat-unsulating coating allows to reduce sharply their prime cost as at the heart of technology use of cheap raw materials (a withdrawal of chemical productions) is necessary, prime technology of drawing, lack of energy-intensive stages, lack of need of a heat treatment for making foam coverings.