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Estudo da influência de íons titânio e cobalto nas propriedades magnéticas e absorvedoras de ondas eletromagnéticas de hexaferrita de bário
(Universidade Federal de São Carlos, 2008-02-22)
In this work Cobalt and Titanium doped Barium hexaferrites were
synthesized by the ceramic method in order to study their use as
electromagnetic absorbing materials in high frequencies. The dopants were
used individually ...
Desenvolvimento de blendas poliméricas PVC/NBR através de processamento reativo e vulcanização dinâmica in situ
(Universidade Federal de São Carlos, 2008-02-28)
Dynamic vulcanization is a process of vulcanization of an elastomer during melt mixing with a thermoplastic which results in a material with better chemical and mechanical properties at high temperature. The PVC/NBR blends ...
Determinação das propriedades mecânicas da liga A356 conformada por spray para diferentes teores de ferro e condições de processamento
(Universidade Federal de São Carlos, 2008-04-22)
The aims of this work were the microstructural and tensile properties characterization of the hypoeutectic spray formed Al-Si 356, with and without contamination for iron, spray formed, extruded and heat treatment. The ...
Desenvolvimento e caracterização de blendas PHBV/Ecoflex® e suas modificações com amidos
(Universidade Federal de São Carlos, 2008-05-30)
Plastics materials produced from petrochemicals are widely used due to
their versatility, mechanical properties and low cost, but they cause environmental
impact as a consequence of the accumulation of great amount of ...
Estudo da tenacidade à fratura por meio do método do trabalho essencial de fratura (EWF) da blenda PBT/ABS, reforçada com fibra de vidro
(Universidade Federal de São Carlos, 2008-06-05)
High rubber content acrylonitrile-butadiene-styrene terpolymer (ABS) has been used to tough PBT. As a result, super tough PBT/ABS blends under notched Izod impact have been obtained. However, there has been a significant ...
Conformação por spray da liga formadora de fase amorfa Fe66B30Nb4
(Universidade Federal de São Carlos, 2008-08-07)
The goal of this doctoral thesis was to contribute to the technology of amorphous metals production with dimensions of the order of millimeters or centimeters through the process of spray forming for the ternary Fe66B30Nb4 ...
Modificação do Poli(hidroxibutirato) PHB com nucleantes e com o copolímero (etileno-co-acetato de vinila) - EVA
(Universidade Federal de São Carlos, 2008-03-19)
In this work, we sought to modify PHB, processing it in the melted state, and to
evaluate the effect of the modifications on its mechanical properties and
biodegradation characteristics. The following systems were therefore ...
Otimização da reciclagem de resíduos siderúrgicos por redução carbotérmica
(Universidade Federal de São Carlos, 2008-04-04)
The evolution of the world-wide production of steel in rates superior to 7% per year in the last five years, strongly driven by China, which got off 222,4 millions in 2003 for 489,0 million tons in 20071, leads to a strong ...
Estudo da previsibilidade de tonalidades na decoração em vidrados transparentes
(Universidade Federal de São Carlos, 2008-12-18)
This study aimed to streamline the use and provide for the tone in the implementation of the decoration in glazed. The industry of traditional ceramics uses a range of dyes and pigments for the decoration of products. ...
Nível de degradação termomecânica e coleta de compostos orgânicos voláteis durante a extrusão de polímeros
(Universidade Federal de São Carlos, 2008-12-01)
In this work we studied the thermomechanical degradation and volatile organic compound (VOC) generated during extrusion of the HDPE, PP, and PS. The degradation processes occurred during extrusion were analyzed by a new ...