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Mostrando ítems 11-20 de 624
Estudo do deslizamento de aço inoxidável austenítico contra compósito de PTFE e carga de rejeito de scheelita
(BrasilUFRNPROGRAMA DE PÓS-GRADUAÇÃO EM ENGENHARIA MECÂNICA, 2018-07-30)
Contact pressure and sliding speed are parameters that have an influence over the
coefficient of friction and the temperature during the contact between PTFE
composites and a metallic counter-face. The reduction of ...
PTFE as a toughness modifier of high-performance PEI/PBT blends: Morphology control during melt processing
(John Wiley and Sons Ltd, 2021-02-01)
High-performance PEI/PBT blends are brittle because of phase distribution and blends densification. New morphologies developed by adding PTFE to PEI matrix during melt processing favor the toughness improvement of PEI/PBT ...
Avaliação tribológica de um compósito a base de PTFE aplicado em mancais de deslizamento
(BrasilUFRNPROGRAMA DE PÓS-GRADUAÇÃO EM ENGENHARIA MECÂNICA, 2018-08-27)
Polymer plain bearings are often applied to submerged pumping systems.
In the state of Rio Grande do Norte, there is a high demand for this type of
component due to activities such as shrimp farming and nautical industry. ...
Latent track radius of PTFE irradiated with high energy ion beam
(ELSEVIER SCIENCE BVAMSTERDAM, 2013-08-02)
PTFE foils were irradiated with different ion beams (Xe, Au and U) with energies up to 1.5 GeV and fluences between 1 x 10(8) and 1 x 10(13) ions/cm(2) at room temperature. The induced modifications in the polymer were ...
Identificação de um modelo viscoelástico para o comportamento de relaxação de tensões do PTFE sob compressão e em temperatura ambiente
(Universidade Federal de São CarlosUFSCarPrograma de Pós-Graduação em Ciência e Engenharia de Materiais - PPGCEMCâmpus São Carlos, 2019-08-29)
The identification of viscoelastic models is important for the design of polymeric parts by making the mechanical behavior of the material predictable under critical conditions. However, the characterization of this behavior ...
PtFe catalysts supported on hierarchical porous carbon toward oxygen reduction reaction in microbial fuel cells
(Springer, 2019-08)
A new family of PtFe catalysts supported on hierarchical porous carbon (HPC), with different porous sizes, was developed and tested as cathodes in oxygen reduction reaction in acetate-fed microbial fuel cells. The results ...
Efeito do tratamento de polímeros em plasmas de nitrogênio
(Universidade Estadual Paulista (Unesp), 2018-02-20)
O politetrafluoretileno (PTFE) e a poliamida 6 (PA 6) são polímeros que têm excelentes qualidades mecânicas, elétricas e químicas. Por isto, são utilizados em diversos componentes de equipamentos mecânicos e elétricos entre ...
Electrosprayed superhydrophobic PTFE: a non-contaminating surface
(Iop Publishing Ltd, 2007-12-21)
This paper reports on the exposure of superhydrophobic polytetrafluoroethylene ( PTFE) coatings to common aqueous solutions which are used in biology, biotechnology and chemical sensor applications. Advancing contact angles ...
Electrosprayed superhydrophobic PTFE: a non-contaminating surface
(Iop Publishing Ltd, 2007-12-21)
This paper reports on the exposure of superhydrophobic polytetrafluoroethylene ( PTFE) coatings to common aqueous solutions which are used in biology, biotechnology and chemical sensor applications. Advancing contact angles ...