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Estudo comparativo e experimental de materiais aplicados a insertos macho de moldes de injeção dentro do conceito de molde híbrido
(2014-05-14)
The application of plastic components has grown significantly in most of industrial segments during last years. This has attracted considerably attention for the injection mould design and manufacturing processes, which ...
Processamento de compósitos de poli (tereftalato de etileno) reciclado reforçado com fibras de vidro
(2014-05-15)
In this work, flake and post-condensed PET composites of different glass fiber contents (0, 20, 30 and 40%) were prepared. Tow kinds of fibers were employed: one fiber having an amino silane-based surface treatment and ...
Estudo de geração de trincas térmicas em discos de freios de veículos comerciais
(2014-05-14)
The disc brake systems, when compared with the drum brake systems currently used in heavy-duty vehicles, resent significant advantages, such as: better performance in relation to temperature and speed and better braking ...
Avaliação da incorporação de nanopartículas de ouro em filmes automontados de polieletrólitos fracos
(2014-06-05)
Nanotechnology has brought some new challenges such as the development of quality and synthesis processes on nanostructures based on inorganic and organic substances. The development of new materials with organic and ...
Preparação e caracterização de membranas poliméricas de poli(fluoreto de vinilideno) para uso em nanofiltração
(2014-06-03)
The search for increasingly efficient technologies in water and effluent treatment made the development of membranes take on an important role in separation processes. The nanofiltration is presented as a promising technology ...
Reação de desinserção em SbxCoSb3-x
(2014-06-03)
The compound SbxCoSb3-x was produced at high pressures and high temperatures in a self-insertion reaction from the binary skutterudite CoSb3. The self-insertion reaction is characterized by the collapse of Sb atoms to the ...
Avaliação da degradação do polietileno contendo aditivo pró-degradante em diferentes meios de exposição
(2014-06-23)
The extensive application of polymers, due to technological progress in several
areas and to economic reasons, has increased the amount of this material in landfills and
home and industrial embankments. Thermoplastic ...
Identificação e caracterização dos sítios superficiais de partículas de alumina e interações de adsorção com o ácido esteárico
(2014-06-24)
Ceramic oxides, e.g. alumina, can be used in various applications due to their
reactive surface, hardness and thermomechanical resistance. One of the attributes that
determines its application is the ability of the surface ...
Caracterização de compósitos elastoméricos com resíduos industriais de copolímero de butadienoe estireno (SBR) desvulcanizado por micro-ondas
(2014-06-23)
The aim of this work was to evaluate the effects of two accelerated aging processes on
the chemical characteristics of styrene butadiene rubber (SBR) composites filled with
industrial scraps (SBR-r) devulcanized by ...
Efeito da oxidação nas análises de dureza e atrito em filmes finos de Si3N4
(2014-06-23)
Hard coatings are widely used in surface engineering of mechanical components due to
their high wear resistance and reduced friction coefficients. Actually, the dry cutting techniques
are demanding new materials with ...