The decline of combustibility of heat-insulating composite plates from plant wastes

Abstract

The structure and factors of the process of production of heat-insulating composite plate materials from the waste of spinning of plant fibers are being developed. A disadvantage of the cellulose-containing filler composites is their increased flammability. The stages of thermal destruction of cellulose are considered. To determine the characteristics of the material that affect their fire hazard properties, the differential scanning calorimetry method was used. The paper substantiates the use of the method of introduction of fire retardant at the stage of formation the structure of composite. To reduce the flammability of composite materials from plant raw materials, it was suggested to use ammonium fluoride. The results of the determination of the degree of damage by mass in the case of burning in a “ceramic combustion chamber” of samples of a composite material with filler from irrecoverable waste produced by cotton and linen fibers are obtained. It has been established that the use of ammonium fluoride for the manufacture of heat-insulating composite plate materials from the irrecoverable waste produced by cotton and linen fibers makes it possible to obtain material with a degree of damage by mass of not more than 22 %. Key words: cotton, flax, spinning waste, cellulose, thermal destruction, differential scanning calorimetry, composite materials, loss of mass in combustion, ammonium fluoride.