Lubricant Oil
Mostrando 1-12 de 38 artigos, teses e dissertações.
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1. DETERMINAÇÃO DOS PARÂMETROS CINÉTICOS E SIMULAÇÃO COMPUTACIONAL DO PERFLUOROPOLIÉTER (PFPE) EMPREGADO COMO LUBRIFICANTE SINTÉTICO
This work aims to determine the kinetic parameters of the thermal decomposition of a lubricating grease based on perfluoropolyether (PFPE) and the computational simulation of this decomposition. The determination of kinetic parameters of thermal decomposition was done by thermal analysis using thermogravimetry (TG) at different heating rates (β) of 10, 15 a
Quím. Nova. Publicado em: 26/08/2019
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2. Influence of water in the MQL technique in the grinding of steel AISI 4340 using CBN wheels
Abstract Usually, machining employs cooling methods to avoid high temperatures. In most cases, the cutting fluid is applied with high flow and low pressures. This technique consumes a large amount of cutting fluid that causes serious problems in the environment and in the health of the worker. An alternative to the conventional cooling method is the Minimum
REM, Int. Eng. J.. Publicado em: 2018-07
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3. Mechanical and Thermo-Physical Properties of Short Glass Fiber Reinforced Polybutylene Terephthalate upon Aging in Lubricant/Refrigerant Mixture
In this study, the relationship between structure and mechanical properties of aged PBT composite was investigated. Short glass fiber reinforced PBT composites were subjected to aging tests in environments typically found in hermetic compressors. Diffusion kinetics were addressed by a periodic control of samples weight, and samples aged in oil presented mass
Mat. Res.. Publicado em: 29/09/2016
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4. Measured Dielectric Permittivity of Contaminated Sandy Soil at Microwave Frequency
Abstract Measurement of dielectric permittivity of soil has been studied by many researchers. However, few studies have been conducted on contaminated soil. The motivation of the present study is to investigate the behavior of sandy soil contaminated by lubricant oil at microwave frequency. Two different artificially prepared soil samples are measured in the
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2016-06
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5. Assessing carriers’ logistical performance indicator by shippers in the São Paulo Metropolitan Area
Abstract This paper aims to assess the logistics services provided by carriers in the São Paulo Metropolitan Area (SPMA) considering two perspectives: the efficiency of the operations and the adoption of sustainable measures. A survey was applied to the 15 main shippers working with the selected carrier in order to assess logistics performance indicators (o
J. Transp. Lit.. Publicado em: 2015-12
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6. Influence of lubricant oil residual fraction on recycled high density polyethylene properties and plastic packaging reverse logistics proposal
Abstract To recycle post-consumer HDPE contaminated with waste lubricating oils, companies include prior washing and drying in the process. This consumes large amounts of water and energy, generates significant effluent requiring treatment. This study assesses lubricating oil influence on HDPE properties to evaluate the feasibility of its direct mechanical r
Polímeros. Publicado em: 2015-10
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7. Máquina de vetores de suporte aplicada a dados de espectroscopia NIR de combustíveis e lubrificantes para o desenvolvimento de modelos de regressão e classificação / Support vectors machine applied to NIR spectroscopy data of fuels and lubricants for development of regression and classification models
Modelos lineares de regressão e classificação por vezes proporcionam um desempenho insatisfatório no tratamento de dados de espectroscopia no infravermelho próximo de produtos derivados de petróleo. A máquina de vetores de suporte (SVM), baseada na teoria do aprendizado estatístico, possibilita o desenvolvimento de modelos de regressão e classifica�
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 15/02/2012
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8. Biodegradation and toxicological evaluation of lubricant oils
The aim of this work was to compare different toxicity levels of lubricant oils. The tests were performed using the earthworm (Eisenia andrei), arugula seeds (Eruca sativa) and lettuce seeds (Lactuca sativa), with three types of contaminants (mineral lubricant oil, synthetic lubricant oil and used lubricant oil) for various biodegradation periods in the soil
Braz. arch. biol. technol.. Publicado em: 2012-12
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9. Simultaneous allergen inactivation and detoxification of castor bean cake by treatment with calcium compounds
Ricinus communis L. is of great economic importance due to the oil extracted from its seeds. Castor oil has been used for pharmaceutical and industrial applications, as a lubricant or coating agent, as a component of plastic products, as a fungicide or in the synthesis of biodiesel fuels. After oil extraction, a castor cake with a large amount of protein is
Braz J Med Biol Res. Publicado em: 2012-11
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10. Eficácia da análise de amostras de óleo lubrificante por espectrometria de emissão óptica com plasma indutivamente acoplado na detecção de desgaste em motores Diesel após amaciamento / Effectiveness of oil lubricating sample analysis by optical emission spectrometry with inductively coupled plasma for wear detection in Diesel engines after running in
Este trabalho tem como objetivo principal avaliar se a determinação da concentração de metais em óleo lubrificante por ICP-OES (Espectrometria de Emissão Ótica com Plasma Indutivamente Acoplado, do inglês Inductively Coupled Plasma Optical Emission Spectroscopy), é capaz de auxiliar no diagnóstico de eventuais falhas por desgaste em motores Diesel
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 15/07/2011
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11. Desenvolvimento de uma unidade virtual para desasfaltação de resíduos pesados de petróleo para maximização de óleo desasfaltado e daí óleo lubrificante / Virtual unity development of heavy petroleum residues deasphalting to maximize the deasphalted oil production, and consequently, the lubricant oil production
O aumento mundial na demanda de energia e o descobrimento de óleo pesado e viscoso por parte da PETROBRAS nos últimos anos têm incrementado o desenvolvimento de novas tecnologias no Brasil para o processamento deste tipo de petróleo, assim como a adequação dos processos já existentes nas refinarias, visando atingir os requerimentos do mercado ao se ob
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/03/2011
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12. Enhanced DLC wear performance by the presence of lubricant additives
Lubricant additives play significant role for reducing friction and wear of mechanical elements. The additives presented in 5W30 oil were developed for metal surfaces. However, they have been used in engine pieces covered with DLC coatings because they also offer the potential to reduce friction losses and wear in automotive applications. The friction and we
Materials Research. Publicado em: 15/04/2011