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Producing hybrid pultruded structural products based on preforms
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Orientador(es)
Resumo(s)
Hybrid pultrusion is a process that can be used to fabricate different products, enclosing distinct techniques
and materials. Its development comes from the need to obtain properties' reinforcement of the
structural profiles obtained by pultrusion, allowing its application into specific situations, such as
thermal or acoustic insulation or to increase the product's moment of inertia, without having a proportional
weight increase. In this work was developed based on a novel idea of manufacturing pultruded
pipes around preforms of good thermal and/or acoustic insulator materials, such as cork and polyurethane
foam. However, the same terminology was already used to describe fabrication techniques in
which pultruded structural profiles were combined with concrete structures in order to increase the
mechanical and/or flexural resistance, diminishing the total weight.
Nevertheless, no industrial equipment is currently available on the market regarding the production of
hybrid pultruded products based on preforms. Thus, novel equipment has been designed to provide a
good connection with a conventional existing pultrusion machine, allowing the production of pultruded
pipes that involve cork and polyurethane foam preforms in a continuous way. The equipment has been
developed and tested, enable obtaining hybrid pultruded products that can be applied in several situations
where flexural strength, acoustic or thermal insulation must be improved relatively to conventional
pultruded products, broadening the market for this type of structural products. The manufacturing
equipment is prepared to work without permanent workers, needing to be refilled every 60 min and
showed to be competitive, being able to add value to the conventional profiles already on the market.
Preliminary tests were carried out showing clearly the improvement of the mechanical strength, thermal
insulation and acoustic insulation capacities.
Descrição
Palavras-chave
Pultrusion process Hybrid pultruded products Properties improvement Composites Manufacturing processes
Contexto Educativo
Citação
Editora
Elsevier