Recycled high-density polyethylene/gypsum composites: evaluation of the microscopic,thermal, flammability,and mechanical properties |
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| Authors: | F.J.H.T.V. Ramos L.C. Mendes |
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| Affiliation: | Instituto de Macromoléculas Professora Eloísa Mano (IMA), Centro de Tecnologia, Universidade Federal do Rio de Janeiro-UFRJ, Rio de Janeiro, Brazil |
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| Abstract: | Sustainable composites comprising scraps of high-density polyethylene (HDPE) and gypsum waste in proportions HDPE/gypsum 100/0, 50/50, 40/60, and 30/70 wt% were prepared. The morphology of the injected specimens was core-shell. Thermal, flammability, water absorption, and compression resistance were also evaluated. Progressively, the presence of gypsum increased the HDPE crystallinity and Tonset. Concerning the flammability, the composite 30/70 exhibited the burning rate three times lower than HDPE, indicating that the gypsum played a role as a flame retardant. The HDPE acted as waterproofing for gypsum. The compression resistance of the composites was similar to HDPE. |
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| Keywords: | HDPE gypsum composite sustainability |
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