POTENCIAL APLICABILIDADE DE COMPÓSITOS POLIMÉRICOS COM RESÍDUOS MINERAIS E DA CONSTRUÇÃO CIVIL EM REVESTIMENTOS INTERNOS / POTENTIAL APPLICABILITY OF POLYMERIC COMPOSITES WITH MINERAL WASTE AND CIVIL CONSTRUCTION IN INTERNAL COATINGS

The manufacture of composite materials from the reuse of industrial waste has been studied with the objective of developing materials with good physical-mechanical properties combined with sustainable development. With this, polymeric composites were made with reinforcements of marble and granite residues, construction and demolition residues and iron ore residues, in the proportions of 10 and 20% in the 100 mesh size of the Tyler series. The method used to manufacture the composite boards was the hand lay-up. The polymeric matrix used was the unsaturated isophthalic polyester with proportions of 1.5% of cobalt accelerator and 1% of MEK-P catalyst (Butanox M-50). Tests for physical characterization of apparent specific mass (ASTM D-792), water absorption (ASTM D-570) Brazilian Journal of Development Braz. J. of Develop., Curitiba, v. 6, n. 9 , p.73343-73353, sep. 2020. ISSN 2525-8761 73345 and apparent porosity (ASTM D-2734) and horizontal flammability tests, following the ASTM D635 standard. The results obtained show that the composition with 20% iron ore obtained lower values of apparent porosity and water absorption. All composites showed flame retardancy, especially composites with 20% iron ore residue with flame retardancy of approximately 85% in relation to the full matrix. Therefore, these materials prove to be viable for internal coatings in the automobile industry and internal coatings in the area of civil construction, in addition to reducing production costs and minimizing environmental impacts.