1995
DOI: 10.1177/009524439502700103
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Applications of a New Dynamic Mechanical Rheological Tester in Measuring Carbon Black and Oil Effects on Rubber Compound Properties

Abstract: A new dynamic mechanical rheological tester called the RPA 2000 rubber process analyzer by Monsanto can analyze rubber masterbatches as well as rubber compounds before, during and after cure. It requires no special sample preparation, is easy to operate, and can apply a wide range of dynamic test conditions to a rubber sample, including very high strains. This paper discusses the use of this new instrument as a processability tester in predicting the effects of variations in filler and oil types and loadings … Show more

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Cited by 13 publications
(14 citation statements)
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“…Porém, o valor da viscosidade Mooney é obtido à baixa taxa de cisalhamento, e não detecta variações estruturais que afetam o processamento e desempenho final do composto, como é o caso do RPA. Neste equipamento, a distribuição de peso molecular, ramificação, razão entre comonômeros, são alguns exemplos que podem ser detectados [5,9] .…”
Section: Resultsunclassified
“…Porém, o valor da viscosidade Mooney é obtido à baixa taxa de cisalhamento, e não detecta variações estruturais que afetam o processamento e desempenho final do composto, como é o caso do RPA. Neste equipamento, a distribuição de peso molecular, ramificação, razão entre comonômeros, são alguns exemplos que podem ser detectados [5,9] .…”
Section: Resultsunclassified
“…Generally, this behavior is exhibited for a polymer below a particular strain level called the critical strain. 4 Nonlinear viscoelasticity is observed when the ratio of stress to strain changes in a strain sweep, under constant conditions of temperature and frequency. Most industrial processing applications are in the nonlinear viscoleastic region for both raw rubber and compounded stocks.…”
Section: Figurementioning
confidence: 99%
“…11), differently from what is found in the literature. 4 Figure 12 presents the SЉ response from a high strain sweep applied to the investigated compositions. Viscous torque is higher than elastic torque (Fig.…”
Section: Figurementioning
confidence: 99%
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