Effect of the Structure of Hydrogenated Butadiene-nitrile Rubber on the Resistance to Aggressive Media and High Temperatures

Khorova, E. A.; Razd'yakonova, G.I.; Khodakova, S. Ya.

doi:10.1016/j.proeng.2016.07.655

Cited by 13 publications

(3 citation statements)

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“…Previously in [7][8][9] HBNR-based AT 5065 VP and Therban AT 5005 VP elastomer properties were studied individually and in different proportions, designed for aggressive environment at higher temperatures operations. It was shown that while Therban AT 5005 VP ratio increases, system unsaturation decreases, RCE operational temperature upper limit expands to 150 °C.…”

Section: Objects and Methods Of Researchmentioning

confidence: 99%

Functional Properties of Elastomers Based on Butadiene-Nitrile Rubbers

Eremin

Khorova

Strizhak

2021

DDF

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In this article Therban AT 5065 VP, Therban AT 5005 VP - HBNR elastomers of different unsaturation degrees and their combined compositions research results (using optical and atomic force microscopy, DSC, DMA) are described. With these results structure and functional properties operational data of nitrile elastomers was obtained with no need of durable tests under different temperatures. It was found out that filler dispersion rises from 61.8 to 90.5 % and decomposition temperature grows from 261.9 to 275.3 °C while Therban AT 5005 VP share is increased from 20 to 50 weight parts. It is shown that elastomers with rubber ratio of 50:50 within temperature range from minus 30 to plus 150 °C have the lowest elasticity coefficient (from 311 to 1.6 MPa) and mechanical loss tangent (0.20) at the end of the test.

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Section: Objects and Methods Of Researchmentioning

confidence: 99%

Functional Properties of Elastomers Based on Butadiene-Nitrile Rubbers

Eremin

Khorova

Strizhak

2021

DDF

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“…Hydrogenated nitrile butadiene rubber (HNBR) is a flexible polymer with excellent mechanical properties and abrasion, temperature, and chemical resistance under extreme conditions [ 41 , 42 , 43 ]. Due to its polyfunctionality, HNBR has been extensively used in oilfield applications, where long-term stability is essential under extreme conditions [ 44 ]. Therefore, it has been hypothesized that HNBR is an excellent candidate for insulating medical implants that require long-term stability.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Polymer-Coated Carbon Nanotube Flexible Microelectrodes for Biomedical Applications

et al. 2023

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The demand for electrically insulated microwires and microfibers in biomedical applications is rapidly increasing. Polymer protective coatings with high electrical resistivity, good chemical resistance, and a long shelf-life are critical to ensure continuous device operation during chronic applications. As soft and flexible electrodes can minimize mechanical mismatch between tissues and electronics, designs based on flexible conductive microfibers, such as carbon nanotube (CNT) fibers, and soft polymer insulation have been proposed. In this study, a continuous dip-coating approach was adopted to insulate meters-long CNT fibers with hydrogenated nitrile butadiene rubber (HNBR), a soft and rubbery insulating polymer. Using this method, 4.8 m long CNT fibers with diameters of 25–66 µm were continuously coated with HNBR without defects or interruptions. The coated CNT fibers were found to be uniform, pinhole free, and biocompatible. Furthermore, the HNBR coating had better high-temperature tolerance than conventional insulating materials. Microelectrodes prepared using the HNBR-coated CNT fibers exhibited stable electrochemical properties, with a specific impedance of 27.0 ± 9.4 MΩ µm2 at 1.0 kHz and a cathodal charge storage capacity of 487.6 ± 49.8 mC cm−2. Thus, the developed electrodes express characteristics that made them suitable for use in implantable medical devices for chronic in vivo applications.

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“…These elastomers may be tailored for specific applications by changing the composition such as the acrylonitrile content or additive packages, or the type and loading of fillers to achieve the desired balance of performance for the intended application. However, it is well known that the properties of elastomers such as HNBRs change once they start to be used in a service environment, during application over extended time periods [1,2], mechanical loading [3], exposure to different chemical environments [4][5][6][7][8][9][10][11], extremes of temperatures [7,[12][13][14][15][16][17], irradiation (for example electron beam [18][19][20], ion beam [21] or gamma irradiation [22,23]) or combinations of these. Depending on the exposure conditions, these changes in properties may be attributed to increased crosslinking, molecular degradation (i.e.…”

Section: Introductionmentioning

confidence: 99%

The effect of hot air exposure on the mechanical properties and carbon dioxide permeability of hydrogenated nitrile butadiene rubber (HNBR) with varying carbon black content

2020

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The effect of hot air exposure at 150 � C for up to 12 weeks (ca. 2000 h) on the properties of hydrogenated nitrile butadiene rubber (HNBR) compounds with varying degrees of carbon black content was investigated and reported in this paper. The composition of the HNBR was varied with 0, 10, 30 or 50 PHR carbon black. The tensile properties, hardness, density, solvent saturation swelling and carbon dioxide permeability of these specimens was investigated before and after exposure in a hot air oven. Correlations between these results are reported for the compounds considered in this work. These correlations illustrate how the changes in performance which would require test samples of specific geometries (such as tensile modulus or gas permeation) might in some cases be predicted by tests which do not require exact geometries (such as density or surface hardness), for the materials investigated in this paper.

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Effect of the Structure of Hydrogenated Butadiene-nitrile Rubber on the Resistance to Aggressive Media and High Temperatures

Cited by 13 publications

References 0 publications

Functional Properties of Elastomers Based on Butadiene-Nitrile Rubbers

Functional Properties of Elastomers Based on Butadiene-Nitrile Rubbers

Evaluation of Polymer-Coated Carbon Nanotube Flexible Microelectrodes for Biomedical Applications

The effect of hot air exposure on the mechanical properties and carbon dioxide permeability of hydrogenated nitrile butadiene rubber (HNBR) with varying carbon black content

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