POLYPROPYLENE COMPOSITIONS WITH REDUCED FLAMMABILITY
The disadvantage of polymeric materials is their flammability, which limits the use of products made from them in fire hazardous industries. In this regard, the development of new polymer compositions with reduced combustibility is an urgent task aimed at expanding the areas of application of polymer products. Purpose of the work: study of the effect of industrial flame retardant additives "Antiflame PPKD", FR 0E360 LDFRMB, "Ecopiren-5" on flammability, technological and operational properties of polymer compositions based on polypropylene; determination of the optimal composition. Research methods: thermogravimetric analysis; standard research methods of technological (MFI, density, melting point), strength and deformation characteristics (breaking stress and elongation at break), flammability of polymer composites; experiment planning. It was shown that the antipyrine additives produced by the industry affect not only the flammability of the material, but also the technological and operational properties of the compositions, which in some cases limits the possibility of processing into extrusion products. Additive "Ecopiren-5" is not recommended for the production of extrusion products due to a significant increase in the viscosity of the melt of the polymer composition. Using the method of experiment planning, regression equations are obtained that connect the properties of compositions with the content of a fire retardant additive and the optimal concentrations for the production of extrusion products with reduced flammability are determined.