Study of the influence of polyurethane in the mechanical and rheological properties of the natural rubber composite and SBR

• Grant number: 20/05549-4
• Support type: Scholarships in Brazil - Scientific Initiation
• Effective date (Start): August 01, 2020
• Effective date (End): July 31, 2021
• Field of knowledge: Engineering - Materials and Metallurgical Engineering - Nonmetallic Materials
• Principal researcher: Renivaldo José dos Santos
• Grantee: Arthur Pimentel de Carvalho
• Home Institution: Universidade Estadual Paulista (UNESP). Campus de Rosana. Rosana , SP, Brazil

Abstract

The Project consists of the obtentions and characterization of the natural rubber (NR) and styrene-butadiene rubber (SBR) composites in the proportion of 50/50 with the addition of the filler, the polyurethane (PU) residue, using the vulcanization semi-eficiente (SEV) system. The influence of the filler on the polymeric matrix and the physical properties of the composites will be the object of this study. The mixture will be made on an open mixer cylinder and the specimen will be made by them pressing in a 2 mm thickness rectangular format, allowing the realization of the study on its physical and chemical properties. The composts will be characterized by the reometric analysis technique, accelerated thermic aging, density, hardness, crosslink density by swelling with organic solvents using the Flory-Reher equation, besides making it possible the abrasion resistance, tear strength and tensile strength. (AU)