Research of properties and confirmation of compatibility of fire protection compounds of foreign and domestic production for wooden structures

Introduction. The article studies the properties of flame retardants of foreign and domestic production widely used for processing load-bearing and enclosing structures of buildings and structures made of wood. Detailed studies of the interaction of compounds from different manufacturers are necessary for the subsequent operation of such facilities, since the flame retardant coating must be carried out periodically. Methods. To study the interaction, various equipment was used to study the properties of flame-retardant materials. A full-scale experiment was also conducted on the interaction of samples coated with the studied compounds with water and the effect of humidity on them. Results. Chemical analysis of flame retardants performed on a SPECTROSCAN MAX-GVM wave dispersive X-ray fluorescence spectrometer showed that they differ in terms of the inorganic component. A thermogravimetric study performed on the HQG-2 thermogravimetric analyzer revealed that the samples behave almost identically. In the initial period of time, the samples rapidly lose mass. The weight loss during drying was 14.53 % for the Phoenix DP sample and 13.75 % for Pirilax-K45. There was no particular effect of humidity on the studied samples. Constant exposure to water leads to the destruction of the coating of samples coated with both studied compounds almost simultaneously. Testing of samples in a specialized laboratory confirmed the effectiveness of flame retardants. Discussion. Despite the fact that the composition of flame retardants differs somewhat in terms of the inorganic component, and when heated, the flame retardant of foreign production obviously reacts chemically with air, or the components of this composition interact with each other, which is not observed for the composition of domestic production, the flame retardant and water-repellent properties of the samples are the same. In addition, when heated, the solvent is removed from the formulations in the same temperature range, which indicates that under the same conditions, the drying rate of the coatings will be commensurate. The tests carried out indicate the chemical compatibility of the compounds. The reaction of the compounds and their combinations to the effects of an extremely humid environment and direct ingress of water, as well as the preservation of flame-retardant properties as a result of the interaction of the compounds indicates that they can be used for coating wooden structures both together and separately, but subject to the following conditions.