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Now showing items 11-20 of 67
Sinterização, caracterização e propriedades de compósitos vidro-minerais para uso como revestimentos
(Universidade Federal de São Carlos, 2017-09-06)
Engineered stones, commonly known in Brazil as quartz surfaces, are
materials used as large tiles for application in architecture and interior
decoration. These materials consist of about 90% by weight of mineral ...
Influência da nióbia no óxido de alumínio eletrofundido para aplicações abrasivas
(Universidade Federal de São Carlos, 2021-07-29)
Abrasives are materials that have as main characteristics their cutting and
grinding power. In its most common crystalline form, aluminum oxide, due to its
high melting point, high hardness and mechanical resistance, ...
Estabilidade microestrutural da liga Cu-0,8Cr-0,07Zr após extrusão em canal angular em temperatura criogênica
(Universidade Federal de São Carlos, 2021-12-20)
Severe Plastic Deformation (SPD) are well established routes with regard to the
intense microstructural refining of metals and alloys up to the submicrometer (<
1 μm) and/or nanometer (< 100 nm) scales. Lowering the ...
Estudo da influência de contraíons nas propriedades eletroquímicas, eletromecânicas e térmicas de compósito polímero ionomérico metal (IPMC) de Náfion®/Pt
(Universidade Federal de São Carlos, 2022-06-21)
In the field of soft actuators, ionomeric polymer metal composite like devices
(IPMCs) are a trend, as they display great displacement when a low electric
potential is applied. Its work mechanism is related to the migration ...
Influência da incorporação de negro de fumo e carbonato de cálcio micro e nanoparticulado nas propriedades reológicas, colorimétricas e mecânicas de filmes de polietileno de baixa densidade
(Universidade Federal de São Carlos, 2021-06-30)
In this work, the influence of incorporation of Carbon Black (CB) and CaCO3, both with different particle sizes, on the rheological, colorimetric and mechanical properties of LDPE films were studied. Three different types ...
Obtenção de quitosana reticulada por processamento termomecânico para aplicações biomédicas
(Universidade Federal de São Carlos, 2022-05-11)
The low processability of chitosan and the obtaining of materials with low structural stability constitute substantial limitations to the commercial use of chitosan, especially in biomedical applications. Furthermore, the ...
Desenvolvimento de eletrólitos nanocompósitos de nafion e nanocristais de celulose para uso em células eletrolíticas com membrana trocadora de prótons (PEMECs)
(Universidade Federal de São Carlos, 2022-04-20)
Proton exchange membrane water electrolysis (PEMWE) performs the
electrolysis of water to produce hydrogen, a source of clean and renewable
energy. The most used commercial electrolyte in PEMWE is the Nafion
membrane, ...
Avaliação da durabilidade do concreto utilizado em postes em São Luís
(Universidade Federal de São Carlos, 2016-06-20)
Reinforced concrete structures built in coastal areas, such as electricity distribution poles, are constantly attacked by aggressive environmental agents. Rebar corrosion mechanism is a specific manifestation of electrochemical ...
Desenvolvimento de uma matriz de fenda instrumentada para o monitoramento reo-óptico do processo de extrusão
(Universidade Federal de São Carlos, 2015-03-13)
A novel slit-die flow cell is presented for the evaluation of extrusion thermo-mechanical history on the flow character of polymers. The rheo-optical concept is claimed once both flow-birefringence and rheological character ...
Estudo do método de mistura das suspensões precipitadas (MPS) para a síntese de catalisadores de tungstênio suportado em zircônia (WOx/ZrO2)
(Universidade Federal de São Carlos, 2017-11-16)
Zirconia-supported tungsten oxide (WOx/ZrO2) is one of the main acid catalysts. The development of new methods for its preparation has been widely studied lately. This thesis presents a study of a new synthesis method, ...