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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 ...
Avaliação das propriedades mecânicas, térmicas, morfológicas e degradação de compósitos de poli(ácido lático) / buriti
(2014-07-10)
Nowadays, preoccupation with the environment has stimulated the use of biodegradable
polymers substituting the synthetic ones, which are harder to degrade under different
conditions. However, the properties of the ...
Co-pirólise de resíduos de pneus e resina polimérica presente na areia de fundição em um reator de leito fluidizado
(2014-07-10)
The use of rubber powder coming from tires through its thermal conversion, adding economic value to
it through their pyrolysis products may represent a solution to the environmental problem of disposal
of this waste. Two ...
Desenvolvimento e caracterização mecânica e dinâmico-mecânica de compósitos poliméricos híbridos (vidro/ramie) moldados por transferência de resina
(2014-07-10)
The use of ramie fibers as reinforcement in polymer composites is justified considering their satisfactory mechanical properties in comparison with other natural fibers, and their hybridization with synthetic fibers can ...
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 ...
Compósitos de poliestireno e poliestireno expandido reciclado reforçado com fibras de curauá : propriedades e degradação
(2014-07-10)
The use of vegetable fibers as a reinforcing filler in polymer composites is receiving increased attention because of the good properties obtained in the final material and they are able to substitute conventional fillers ...