Navegando por Palavras-chave "composite polymers"

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    Desenvolvimento de compósitos de resina epóxi/não tecido utilizando refugo da indústria de não tecido
    (Universidade Federal de São Paulo (UNIFESP), 2016-06-20) Leite, Jose Rodolfo Vieira [UNIFESP]; Passador, Fabio Roberto [UNIFESP]; Universidade Federal de São Paulo (UNIFESP)
    Non-wovens are formed by extrusion processes and may be produced in an economical manner which are used in disposable products. Medical and hospital sector and packaging sectors are the largest consumers of non-wovens. The non-woven industry generates a large content of solid waste from the production. The wastes of non-wovem are fibers of various polymers, including polyamide, polyethylene, polypropylene, polyester and polystyrene. These materials have great interest for use as a reinforcing agent in thermosetting matrix, contributing to an improvement in the mechanical properties of these matrices, and also collaborating with the decrease of the solid residue of the non-woven industry. In this work, epoxy/nom-woven composites were prepared using two different types of waste of non-wovenssupplied fromParaíba´s Valley industries. The composites were prepared by hand lay-up thecnique and characterized by thermal, mechanical and morphological properties. The addition of 0.6 to 1.2 phr of fibers of PE/PP non-woven increased the glass transition temperature of the epoxy resin in the composite, besides improving the mechanical properties, as evidenced by the increase in elastic modulus and flexural modulus of the composites. For composite reinforced with laminated of PE/PP/PET non-woven, which presents a preferred direction of the fibers, resulting from the consolidation of these laminates, the mechanical properties of the composite are influenced by the direction of the fibers. Composites whit laminates arranged longitudinally to the direction of consolidation had superior mechanical properties. Thus, residues of the non-woven industry can be used as fillers for preparation of composites materials and can be an alternative for decreasing the amount of discharge of the product, using a low cost and simple method.