Ageing and Oil Resistance of Fiber-Reinforced CR/NBR Blends

Botros, S. H.; Younan, A. F.; Essa, Mohamed M.

doi:10.1080/10587250008023633

Cited by 9 publications

(4 citation statements)

References 8 publications

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“…Botros et al [11] studied the properties of acrylonitrile butadiene rubber/polychloroprene rubber blend (NBR/CR). The blend was found to possess the thermal resistance of CR and the oil resistance of NBR.…”

Section: Rubber Blendsmentioning

confidence: 99%

Non-linear Viscoelastic Behaviour of Rubber-Rubber Blend Composites and Nanocomposites: Effect of Spherical, Layered and Tubular Fillers

Nair

George

Joseph

2014

Advances in Polymer Science

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This chapter deals with the non-linear viscoelastic behaviour of rubberrubber blend composites and nanocomposites with fillers of different particle size. The dynamic viscoelastic behaviour of the composites has been discussed with reference to the filler geometry, distribution, size and loading. The filler characteristics such as particle size, geometry, specific surface area and the surface structural features are found to be the key parameters influencing the Payne effect. Non-linear decrease of storage modulus with increasing strain has been observed for the unfilled vulcanizates. The addition of spherical or near-spherical filler particles always increase the level of both the linear and the non-linear viscoelastic properties. However, the addition of high-aspect-ratio, fiber-like fillers increase the elasticity as well as the viscosity.

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Section: Rubber Blendsmentioning

confidence: 99%

Non-linear Viscoelastic Behaviour of Rubber-Rubber Blend Composites and Nanocomposites: Effect of Spherical, Layered and Tubular Fillers

Nair

George

Joseph

2014

Advances in Polymer Science

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“…Kwak and Nakajima 11 blended acrylonitrile copolymer (NBR) and poly(vinyl chloride) (PVC) and suggested a schematic model for its homogenization mechanism. The properties of the mixture of NBR and polychloroprene rubber (CR) were investigated by Botros et al 12 Wimolmala et al 13 combined PVC and NBR at various rubber-to-plastic ratios. They concluded that the blend with a 30% rubber composition had the highest tensile toughness among the samples they tested.…”

Section: Introductionmentioning

confidence: 99%

Characterization of the Mechanical, Biodegradation, and Morphological Properties of NBR/Biopolymer Blend, Integrated with a Risk Evaluation

Akbarian-Saravi,

Basar,

Margoto

et al. 2024

ACS Omega

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Biopolymer blends have attracted considerable attention in industrial applications due to their notable mechanical properties and biodegradability. This work delves into the innovative combination of butadiene-acrylonitrile (referred to as NBR) with a pectin-based biopolymer (NGP) at a 90:10 mass ratio through a detailed analysis employing mechanical characterization, Fourier transform infrared (FTIR) analysis, thermogravimetric analysis (TGA), and morphology studies using SEM. Additionally, biopolymer's biodegradability under aerobic and anaerobic conditions is tested. The study's findings underscore the superior tensile strength and elongation at break of the NGP/NBR blend in comparison to pure NBR, while also exhibiting a decrease in puncture resistance due to imperfect bonds at the particle−matrix interfaces, necessitating the use of a compatibilizer. In anaerobic conditions, evaluation of biodegradable properties reveals 2% and 12% biodegradability in NBR and NGP/NBR blend, respectively. The degradation properties were also aligned with TGA results highlighting a lower decomposition temperature for NGP. Additionally, this research integrates the application of a conditional value-at-risk (CVaR)-based analysis of the blend's tensile properties to evaluate the uncertainty impact in the experiment. Under risk, a significant enhancement in the tensile performance (by 80%) of the NGP/NBR blend was shown compared to pure NBR. Ultimately, the study shows that adding pectin to the NBR compound amplifies the overall performance of the biopolymer significantly under select criteria.

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“…Nevertheless, researchers have conducted several studies [22][23][24][25][26][27][28][29][30][31] using model-free thermokinetic methodologies such as OFW and KAS to determine the activation energy and frequency factor with accelerated aging techniques. The existing research primarily focuses on accelerated aging, which may not accurately represent real-world conditions and can induce unrealistic degradation mechanisms and tests are costly.…”

Section: Introductionmentioning

confidence: 99%

Estimating shelf life and degradation mechanisms of nitrile butadiene rubber for viscoelastic dampers

Ammineni,

Lingaraju,

Nagaraju

2024

Journal of Elastomers & Plastics

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This study investigates the shelf life of nitrile butadiene rubber (NBR) based on age and temperature factors. Natural aging of nitrile butadiene rubber samples is performed under laboratory conditions for 2 years, followed by thermogravimetric analysis to evaluate Arrhenius parameters. Toop’s equation is used to predict shelf life at 5% conversion rate. Model-free kinetic methods, including Ozawa-Flynn-Wall (OFW), Kissinger-Akahira-Sunose (KAS), and Kissinger, estimate shelf life at different temperatures for both virgin and naturally aged nitrile butadiene rubber. Results show close correlation between KAS and Kissinger methods, with slight variations in activation energy impacting shelf life. Fourier-transform infrared spectroscopy (FTIR) tests assess functional group changes with age. Virgin nitrile butadiene rubber activation energy: OFW-73.33 kJ/mol, KAS-68.43 kJ/mol. Aged nitrile butadiene rubber activation energy: OFW-72.57 kJ/mol, KAS-67.88 kJ/mol. Shelf life at 40°C: Virgin nitrile butadiene rubber - OFW-111.29 years, KAS-26.31 years. Aged nitrile butadiene rubber - OFW-89.01 years, KAS-22.37 years. These findings provide valuable insights for predicting and assessing nitrile butadiene rubber viscoelastic damper performance in engineering applications.

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Ageing and Oil Resistance of Fiber-Reinforced CR/NBR Blends

Cited by 9 publications

References 8 publications

Non-linear Viscoelastic Behaviour of Rubber-Rubber Blend Composites and Nanocomposites: Effect of Spherical, Layered and Tubular Fillers

Non-linear Viscoelastic Behaviour of Rubber-Rubber Blend Composites and Nanocomposites: Effect of Spherical, Layered and Tubular Fillers

Characterization of the Mechanical, Biodegradation, and Morphological Properties of NBR/Biopolymer Blend, Integrated with a Risk Evaluation

Estimating shelf life and degradation mechanisms of nitrile butadiene rubber for viscoelastic dampers

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