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Now showing items 161-170 of 270
Fornos para fusão e espera para indústria de alumínio : caracterização de materiais refratários e conservação de energia
(Universidade Federal de São Carlos, 2012-07-26)
The industrial need to reduce energy consumption is part of a continuous evolution towards higher levels of sustainability and competitiveness. Considering these aspects, the search for alternatives to improve the performance ...
Avaliação da durabilidade de argamassas e pastas de cimentos do tipo Portland preparados com um clínquer contendo resíduo de bauxita como matéria-prima
(Universidade Federal de São Carlos, 2012-08-07)
The structures of Portland cement are frequently exposed to aggressive environments, which can lead to their degradation. Thus, the study of durability is very important to avoid damages caused by early failures as well ...
Erosimetria a quente: equipamento, adequações e correlações dos valores obtidos com as propriedades de concretos refratários
(Universidade Federal de São Carlos, 2011-05-09)
The erosion wear is a mechanism that results in the removal of material from the surface by erosive particles. In some applications, such as calciners used in the aluminum industry and risers of the petrochemical industry, ...
Desenvolvimento de compostos poliméricos biodegradáveis modificados com cargas e fibras naturais vegetais
(Universidade Federal de São Carlos, 2010-08-02)
Due to environmental and economical concerns, the study and utilization of raw materials coming from natural renewable resources have grown significantly in the last years. The utilization of biodegradable polymers has ...
Avaliação da correlação entre o trabalho essencial de fratura (EWF) e o grau de gelificação de compostos de PVC rígido
(Universidade Federal de São Carlos, 2011-07-14)
Poly(vinyl chloride) or PVC is among the most consumed thermoplastics in the world and has great versatility: A wide range of products, from pipes and rigid window frames to flexible foams, various types of materials such ...
Desenvolvimento de compósito de policloreto de vinila (PVC) reforçado com fibra de vidro
(Universidade Federal de São Carlos, 2012-08-06)
This work was focused on the evaluation of the interface between short fiber glass and polymeric matrix of the PVC composites using four different sizings as fiber superficial treatment. The interface analysis was done ...
Obtenção e caracterização de cimentos sulfobelíticos sintetizados a partir do resíduo de bauxita
(Universidade Federal de São Carlos, 2013-03-18)
The modern society has an elevated and increasingly pattern of consumption, demanding a high industrial productivity and generating enormous residue volumes, resulting in a conduct that is becoming each time more unsustainable. ...
Parâmetros térmicos de solidificação, microestrutura e resistência mecânica de ligas eutéticas Sn-0,7%Cu-(xNi)
(Universidade Federal de São Carlos, 2013-07-29)
Sn-Pb traditional solder alloys were overly utilize in electronic devices industry, since their properties and features use were adequate and well known. In the last years many restrictions and directives were and have ...
Avaliação da compatibilidade entre Y-TZP e BICUVOX para obtenção de compósitos condutores de íons de oxigênio
(Universidade Federal de São Carlos, 2013-09-27)
The BICUVOX is a potential candidate for devices that require materials with high ionic conductivity at intermediate temperatures. However, deficiencies such as low mechanical resistance and thermodynamic stability in ...
Carvão vegetal: desenvolvimento de indicadores tecnológicos a partir da análise de documentos de patentes
(Universidade Federal de São Carlos, 2013-08-30)
Charcoal is an important renewable source of energy and feedstock for several applications. Its consumption, production and utilization are known by human kind for many years and have been increasing over time. The constant ...