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Obtenção e caracterização de espumas vítreas a partir de resíduos de lâmpadas fluorescentes descontaminados de mercúrio
(2015-02-23)
Glass foams are heterophasic materials applied in acoustic and thermal insulation, and compared to other materials, are lightweight and sturdy. Glass foams can be prepared from glass packaging, cathode ray tubes and other ...
Avaliação das propriedades de compósitos de poli(hidroxibutirato-co-valerato) reforçado com fibras de curauá
(2014-07-10)
Composites are materials composed of two or more different materials, forming a heterogeneous class of materials which differ in physical and chemical properties. Recent studies on biodegradable polymer composites reinforced ...
Desenvolvimento de compósitos expandidos de poli(etileno-co-acetato de vinila) - eva reforçados com pó de madeira e com fibra de bananeira
(2014-07-10)
Expanded composites or vegetable fiber-reinforced cell composites are a new emerging class
of materials combining good mechanical properties of reduced density, having superior ability
of energy absorption at impact, as ...
Influência da adição de diferentes oligômeros poliédricos de silsesquioxano (POSS) incorporados na resina epóxi no desempenho à corrosão em substrato de aço de baixa liga
(2016-07-05)
The epoxy resin is one of the matrices most used in manufacturing composites and coatings. It is highlighted in the group of thermosetting materials due to good processability, mechanic behavior and thermal stability. ...
A influência das variáveis de processamento e de diferentes tipos de nanocargas nas propriedades dos compósitos de polipropileno
(2015-08-12)
In this work an evaluation of the thermal and mechanical properties of PP/PP-g-MA composites with 5 and 10 wt% of MMT-Na+, MMT-15A, MMT-30B, CaCO3 and CaCO3-AE nanofillers was performed. Composites were prepared in a ...
Caracterização, tratamento e viabilidade de aplicação de argilas provenientes de resíduos de extração de areia na área cosmética
(2017-05-23)
Clays are natural, earthy, fine-grained materials that exhibit plasticity in contact with water. The applicability of the clays in the cosmetic area depends on their chemical and mineralogical composition, but these materials ...
Influência da geometria sobre o rendimento de bocais injetores de turbinas tesla no escoamento compressível supersônico
(2014-07-10)
Nozzles with convergent-divergent geometry are designed and manufactured for the establishment of supersonic flows. The main objective of this work is to verify the variation of isentropic efficiency depending on the ...
Determinação da espessura de camadas duras em aços por técnicas magnéticas
(2014-07-10)
The process most commonly used for surface hardening of steels is annealing. Using conventional thermal treatments, hardened layers were formed on SAE 1020 and SAE 8620 steel by diffusion of carbon into the surface. The ...