Glass Fillers
Mostrando 1-12 de 15 artigos, teses e dissertações.
-
1. Physical Properties of Glass Ionomer Cement Containing Pre-Reacted Spherical Glass Fillers
Resumo O objetivo deste estudo foi avaliar o efeito de diferentes fases líquidas comerciais (Ketac, Riva e Fuji IX) e o uso de partículas esféricas de vidro pré-reagido (SPG) na maturação do cimento, liberação de flúor, força de compressão (CS) e resistência biaxial à flexão (BFS) de cimentos de ionômero de vidro (GICs) experimentais. Os GICs
Braz. Dent. J.. Publicado em: 2020-08
-
2. Avaliação da morfologia e propriedades mecânicas de compósitos laminados a base de epóxi, cortiça e microesferas de vidro
RESUMO Neste trabalho foram desenvolvidos compósitos poliméricos epoxídicos laminados a base de cortiça e microesferas ocas de vidro. Os compósitos laminados foram confeccionados manualmente e avaliados quanto às características morfológicas em microscópio eletrônico de varredura e a influência da incorporação das cargas foi avaliada por meio da
Matéria (Rio J.). Publicado em: 16/09/2019
-
3. Presence of iron in polymers extruded with corrosive contaminants or abrasive fillers
Abstract Off-site measurements of the dimensions of extruder screws are used to monitor their wear. This wear causes the presence of metals in the processed polymer. We detected the presence of iron in polymers processed with corrosive contaminants or abrasive fillers. To this end we processed poly(ethylene terephthalate), PET, pure or contaminated with poly
Polímeros. Publicado em: 10/06/2019
-
4. Estrategia para la optimización de un compuesto de caucho con aceite de soja utilizando diseños de experimentos
ABSTRACT When a rubber component is made, is necessary to start from a “rubber compound” which may be composed of one or more polymers and various additives or fillers. The development of an elastomer mixture to produce a compound with a specific end-use is complicated in the field of rubber technology. Therefore, the successful development of a compound
Matéria (Rio J.). Publicado em: 19/07/2018
-
5. Replacement of Commercial Silica by Rice Husk Ash in Epoxy Composites: A Comparative Analysis
Since epoxy resins are used as composite matrix with excellent results, and silica is one of the fillers most often employed, this study compared the performance of rice husk ash (RHA) as filler in epoxy composites, in replacement for high-purity silica. Composites were molded containing 20%, 40%, and 60% (wt) silica or RHA. Viscosity analysis, infrared spec
Mat. Res.. Publicado em: 05/04/2018
-
6. The Influence of Bleached Jute Fiber Filler on the Properties of Vulcanized Natural Rubber
There is growing interest in replacing the synthetic reinforcements used for natural rubber (NR) composites with natural fibers from renewable, environmentally sustainable sources. Jute fibers may be suitable reinforcements for NR because they have a high tensile strength, which is comparable to other fillers such as glass fibers. Thus, we studied the incorp
Mat. Res.. Publicado em: 30/10/2017
-
7. Evaluation of Filler Effects on the Dynamic Mechanical Behavior of HTPB-Elastomer Used as Binder in Exemplary Composite Formulations
ABSTRACT: This study aims to evaluate the dynamic mechanical properties of a binder, used in composite propellants, with increasing amount of different solid fillers. Dynamic Mechanical Analysis (DMA) is performed to determine the region of glass-rubber transition temperature (Tg). Further parameters were obtained from the description of the loss factor curv
J. Aerosp. Technol. Manag.. Publicado em: 2017-09
-
8. Layered double hydroxides as fillers in poly(l-lactide) nanocomposites, obtained by in situ bulk polymerization
Abstract In this study in situ bulk polymerization of L-lactide filled with layered double hydroxides (LDH) was investigated. Four different LDHs intercalated with two different organic anions (salicylate and sebacate) were synthesized and characterized. After characterization, these synthetic layered compounds were used as fillers in poly(L-lactide) (PLLA)
Polímeros. Publicado em: 31/05/2016
-
9. Optimizing light-cured composite through variations in camphorquinone and butylhydroxytoluene concentrations
Abstract The use of a free-radical polymerization inhibitor, butylhydroxytoluene (BHT), and a common photo-initiator, camphorquinone (CQ), to reduce polymerization stress in dental composite was investigated in this study. Samples were prepared by mixing Bis-GMA, UDMA, and TEGDMA at a 1:1:1 ratio (wt%), and silanized borosilicate glass fillers at 70 wt% were
Braz. oral res.. Publicado em: 20/05/2016
-
10. Processamento de vidros de aluminosilicatos de ítrio (YAS) para compósitos odontológicos
Foram moídas duas séries de vidros silicatos para a obtenção de partículas com dimensões nas faixas micrométrica, submicrométrica e nanométrica, utilizando três tipos distintos de processos de moagem: moagem em moinho de esferas, em atritor, e de alta energia. Foram investigados os efeitos do tempo e do tipo do meio de moagem no tamanho de partícu
Cerâmica. Publicado em: 2011-03
-
11. Avaliação do processamento e propriedades de compósitos de poliuretano termoplástico reforçados com fibras silexil, em comparação com outras fibras/cargas comercialmente utilizadas
The introduction of fibers/fillers in polymers is a common strategy to produce material with enhanced properties and low densities for applications such as in the automobile industry. In this work, a novel kind of an inorganic short fiber (Silexil), obtained from mineral resources, was characterized and applied as a reinforcing agent in thermoplastic polyure
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 23/09/2004
-
12. Polissiloxanos polissilazanos como precursores de materiais ceramicos e suas aplicacões na obtenção de compositos de matriz ceramica
In this work different preceramic polymers, as polysiloxane and polysilazane were prepared, and their conversions by controlled pyrolysis to silicon oxycarbide (SiOC) and silicon carbonitride (SiCN) glasses, respectively, were studied. The polysiloxane was prepared from 1,3,5,7-tetravinyl-1,3,5,7-tetramethylciclotetrasiloxane and 1,3,5,7-tetramethyl-1,3,5,7-
Publicado em: 2002