Avaliação da estrutura de tecidos técnicos como elemento reforçante em compósitos poliméricos sistema poliéster isoftálico
Materials known as technical textiles can be defined as structures designed and developed to meet specific functional requirements of various industry sectors, which is the case in automotive and aerospace industries, and other specific applications. Therefore, the purpose of this work presents the...
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| Formato: | Dissertação |
| Idioma: | por |
| Publicado em: |
Universidade Federal do Rio Grande do Norte
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| Endereço do item: | https://repositorio.ufrn.br/jspui/handle/123456789/15705 |
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| Resumo: | Materials known as technical textiles can be defined as structures designed and
developed to meet specific functional requirements of various industry sectors, which is
the case in automotive and aerospace industries, and other specific applications.
Therefore, the purpose of this work presents the development and manufacture of
polymer composite with isophthalic polyester resin. The reinforcement of the composite
structure is a technical textile fabric made from high performance fibers, aramid (Kevlar
49) and glass fiber E. The fabrics are manufactured by the same method, with the aim of
improving the tensile strength of the resulting polymer composite material. The fabrics,
we developed some low grammage technical textile structures in laboratory scale and
differentiated-composition type aramid (100%), hybrid 1 aramid fiber / glass (65/35%)
and hybrid 2 aramid fiber / glass (85/15% ) for use as a reinforcing element in
composite materials with unsaturated isophthalic polyester matrix. The polymer
composites produced were tested in uniaxial tensile fracture surface and it´s evaluated
by SEM. The purpose of this work characterize the performance of polymer composites
prepared, identifying changes and based on resistance to strain corresponding to the
mechanical behavior. The objectives are to verify the capability of using this
reinforcement structure, along with the use of high performance fibers and resin in
terms of workability and mechanical strength; verify the adherence of the fiber to the
matrix and the fracture surface by electron microscopy scanning and determination of
tensile strength by tensile test. The results indicate that, in a comparative study to the
response of uniaxial tensile test for tensile strength of the composites and the efficiency
of the low percentage of reinforcement element, being a technical textile fabric structure
that features characteristic of lightness and low weight added in polymer composites |
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