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Estudo da oxidação superficial do copolímero propileno/etileno durante o tratamento corona e sua influência no comportamento de termosoldagem
(Universidade Federal de São Carlos, 2010-06-23)
Different ethylene-propylene copolymers (Ziegler-Natta and Metallocene) were exposed to corona discharge and analyzed by spectroscopic, morphological and fractionation techniques. Effects of different treatment configurations ...
Avaliação de um critério de equivalência entre dados de tração a quente e fluência em aços
(Universidade Federal de São Carlos, 2007-05-28)
This work was conducted in four stages, the first to understand the phenomena that affect the 2.25Cr-1Mo steel hot tensile in different conditions, observing their behavior in a wide range of temperature and strain rates, ...
Desenvolvimento e caracterização de blendas e de compostos empregando polímeros biodegradáveis
(Universidade Federal de São Carlos, 2004-10-25)
This work presents theoretical information and experimental data on the behavior of biodegradable polymers and blends of biodegradable PHB polymer with copolyesters that are also biodegradable. Binary mixtures were made ...
Utilização da borracha natural no desenvolvimento de elastômeros termoplásticos
(Universidade Federal de São Carlos, 2010-05-28)
Dynamic vulcanization is a process of vulcanization of an elastomer during melt mixing with a thermoplastic. This process results in an elastomeric alloy material with the properties of a conventional thermoset rubber, but ...
Comportamento mecânico da liga Ti-6Al-4V com superfície modificada por laser de femtosegundo para uso biomédico
(Universidade Federal de São Carlos, 2012-02-10)
Stainless steel orthopedic implants are still the most widely used in Brazil
due to their lower cost. There is, however, a tendency to expand the use of
special alloys such as titanium-based, due to clinical advantages ...
Compósitos e nanocompósitos de polietileno-celulose : efeito do tamanho e da composição da fibra e do processamento nas propriedades óticas e mecânicas dos filmes
(Universidade Federal de São Carlos, 2017-08-31)
In this study an aqueous dispersion of a polyethylene copolymer with a content of 6 wt% of acrylic acid was used as an alternative medium for incorporation of cellulosic fibers (FC), nanofibrils (NFC) and lignocellulosic ...
Desenvolvimento de um detector de espalhamento de luz LASER de baixo ângulo LALLS operando em tempo real na extrusão
(Universidade Federal de São Carlos, 2005-12-08)
In the present work a prototype of a low angle laser light scattering was developed and installed in an extruder in order to operate in real time. The equipment was built by the research group of which the author is member, ...
Nanotecnologia: indicadores tecnológicos sobre os avanços em materiais a partir da análise de documentos de patentes
(Universidade Federal de São Carlos, 2011-09-19)
Nanotechnology is a technological advance of several fields, regarded to be emergent, universal and diffuse field, involving mainly the development of nanomaterials, which can show different properties and behaviors. The ...
Desenvolvimento e caracterização de biocompósitos de blendas TPU/PCL com hidroxiapatita para produção de scaffolds bioativos via impressão 3D
(Universidade Federal de São Carlos, 2022-08-02)
The increasing need for biological tissues to treat defects caused by disease or injury has demanded new solutions to provide functional substitutes that supply tissue shortages and suit the needs of each patient. In this ...
Desenvolvimento de compósito epóxi/fibra de vidro produzido por enrolamento filamentar para revestimento interno de coluna de produção de petróleo em aço carbono na exploração offshore
(Universidade Federal de São Carlos, 2021-08-04)
Epoxy/glass fiber composites (GRE) were produced by filament winding with a view to application as a liner in a carbon steel tube to replace all-metal super duplex stainless steel column in offshore petroleum exploration. ...