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Crescimento de trinca de fadiga no aço SAE 4140 sujeito à vibração forçada
(2015-10-26)
Fatigue is a common cause of failures in mechanical components and metal structures when subjected to dynamic loads, caused by the growth of a crack, with the so-called Paris’ law the main model for crack propagation. This ...
Estudo morfológico de uma blenda de I-PP e EPDM com argila
(2015-10-07)
In this work were investigated the morphological, themal and rheological properties of a isotactic polypropylene/ethylene-propylene-diene terpolymer rubber/nanoclay Cloisite 15A composite, prepared by mixed melt and submitted ...
Desenvolvimento e caracterização de compósitos de elastômero termoplástico de poliuretano (TPU) com argila
(2015-10-07)
In this study thermoplastic polyurethane (TPU) composites were obtained with different nanoclay contents (0, 1, 3 for all cases and 10 wt% in some cases). The nanoclay Cloisite 30B (C30B) was dispersed in the TPU matrix ...
Estrutura e propriedades elásticas das fases alpha e gama do ZrW2O8
(2015-10-06)
The crystalline structure and some elastic properties of the a and g phases of zirconium tungstate, ZrW2O8, were calculated according to Density Functional Theory using the B3LYP functional (DFT/B3LYP). The structure of ...
Preparação, caracterização e aplicação de híbridos de montmorilonita-alginato-nanopratas na desinfecção de efluentes industriais para águas de reuso
(2015-03-04)
Different techniques have been developed to eliminate microorganisms from industrial wastewater and improve its final quality for reuse. Among them, the use of silver nanoparticles (AgNPs) anchored on montmorillonite (MMT) ...
Deposição e caracterização de filmes finos de nitreto de titânio para aplicações decorativas
(2015-02-11)
This work studies the deposition of titanium nitride (TiN) thin films on stainless steel AISI 304 substrate for decorative applications. The films studied here are composed of a layer of Ti working as an interlayer between ...
Preparação, caracterização e aplicação de um compósito ferromagnético na remoção do corante verde de malaquita em meio aquoso
(2015-07-10)
Textile industries have directly contributed to the contamination of the environment, mainly due to the disposal of effluents, which are generated in the dyeing process. Frequently, these effluents have different colors ...
Microesferas magnéticas de quitosana para remoção do corante violeta de metila 2B em meio aquoso
(2015-07-10)
The increasing use of dyes in the industry generates great quantities of waste. When disposed improperly, they become a source of pollution of aquatic systems which are essential to life and to maintain the equilibrium of ...
Obtenção e caracterização de nanocompósitos de resina epóxi/montmorilonita (MMT) aplicados em tinta em pó
(2015-10-07)
The objective of this dissertation is to present a study of the influence of the addition of nanoclays on thermal, morphological, physical and anticorrosive properties of powder coatings epoxy resin based. Polymeric ...