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Now showing items 31-40 of 42
Laminação em atmosfera inerte de ligas à base de magnésio para armazenagem de hidrogênio
(Universidade Federal de São Carlos, 2014-08-08)
In recent decades, the use of energy presented strong growth due to the need of supplying the daily energy consumption of approximately seven billion people. To solve this problem, it has been investigated the nature, ...
Graftização de anidrido maleico em polipropileno, por extrusão reativa, na presença de nanopartículas: estudo de reação e monitoramento in-line
(Universidade Federal de São Carlos, 2014-04-17)
The grafting reaction of maleic anhydride onto polypropylene by reactive extrusion, in presence of nanoclay, was studied. The organoclay (Cloisite 20A) was used as support for dicumyl peroxide (DCP), and different amounts ...
Estudo de fibras de folhas de abacaxis (gênero Ananas) e sua utilização em compósitos biodegradáveis com matriz de poli(ácido lático) (PLA)
(Universidade Federal de São Carlos, 2014-08-19)
In this work natural fibers from new pineapple varieties were studied aiming at their application as mechanical reinforcement for green polymer composites. Eighteen varieties of pineapple leave fibers (PALFs) were then ...
Desenvolvimento e caracterização de nanocompósitos de blendas de PA6/AES compatibilizadas com copolímero acrílico
(Universidade Federal de São Carlos, 2014-03-31)
Toughened polyamide 6 (PA6) nanocomposites were obtained by incorporation of acrylonitrile-EPDM-styrene (AES). As compatibilizing agents was used the copolymer methyl methacrylate-anhydride (MMA-MA). The effect of the ...
Influência da nanoargila (O-MMT) nas propriedades mecânicas de polipropileno reforçado com fibra de vidro
(Universidade Federal de São Carlos, 2014-07-01)
Hybrid filler reinforced thermoplastics composed with short glass fiber (GF) and different particulate fillers present special interest for engineering applications, as substantial reductions in mechanical anisotropy and ...
Caracterização microestrutural e mecânica da liga AA7050 reciclada por conformação por spray, extrusão e forjamento rotativo
(Universidade Federal de São Carlos, 2014-07-03)
The objective of this study was to evaluate the microstructure and the mechanical properties of hot extruded bars and cold rotary swaging wires of an AA7050 alloy. The ingot for the mechanical conformation operations was ...
Compreendendo a influência da titânia no processamento da alumina eletrofundida marrom e sua caracterização para aplicações abrasivas
(Universidade Federal de São Carlos, 2014-01-28)
Motivated by increased consumption of abrasive grains and the need of the abrasive market to develop roughing, polishing and increasiling efficient cutting tools, this work aimed to understand the influence of titania in ...
Modificação química de poli(ácido láctico) com anidrido maleico por processamento reativo
(Universidade Federal de São Carlos, 2014-08-18)
The chemical modification of PLA with maleic anhydride by reactive processing and the extent of reaction and degradation reactions, were studied. Routes of grafting reaction of maleic anhydride in PLA were evaluated. Dicumyl ...
Cientometria aplicada a materiais para armazenamento de hidrogênio
(Universidade Federal de São Carlos, 2014-09-18)
Fossil Fuels have been used for more than a century as energy sources and vectors. Albeit their high energy densities and easy transport and containment, their availability is limited and they are notorious local pollution ...
Síntese e sinterização em micro-ondas, e caracterização da Perovskita BA 0,5Sr0,5Co0,8Fe0,2O 3-δ
(Universidade Federal de São Carlos, 2014-02-27)
Ba0,5Sr0,5Co0,8Fe0,2O3-δ (BSCF) perovskite-type oxide is currently one of the most promising materials for applications in oxygen separation membranes. BSCF powder synthesis has received considerable attention because ...