RESEARCH OF SOME ASPECTS OF WATER PERMEABILITY OF FIRE-RETARDANT FABRIC FOR TENTS

Abstract

The development of reliable methods for studying the conditions of fire protection of fabrics leads to the creation of new types of fireproof materials. At the same time, there is a need to determine the conditions for the formation of a barrier to water mass transfer and to establish a mechanism for inhibiting water penetration through the material. As a result of the conducted researches the influence of intumescent coating on water resistance was determined and the criterion relationswere obtained, which allow to obtain the change of water permeability on the fabric surface, ie the value of water exposure over time, characterized by the amount of absorbed water. . The water penetration time of the sample of the fireproof element of the tent exceeds the data, compared to the untreated sample by more than 30 times.Peculiarities of inhibition of the mass transfer process under the action of water are the isolation of the surface of the fire-retardant fabric by insoluble complexes of the intumescent coating. Thus, a sample of fire-retardant fabric with an intumescent coating on the reverse side after exposure to water showed the amount of absorbed water not more than0.00011 kg, and a sample of uncoated fabric absorbed 0.01 kg.Thus, the obtained data on the influence of intumescent coating on the process of inhibition of water absorption suggest that the main regulator of the process is not so much the formation of a significant number of water-insoluble complexes, as some fireretardant coatings are destroyed by moisture. In this case, a significant impact on the process of protection of natural combustible material in the application of fire-retardant coating is carried out in the direction of waterproofing the fabric surface with a polymer shell resistant to destruction by moisture.