The low temperature crystallization of hydrogenated nitrile butadiene rubber (HNBR)

Alcock, B.; Olafsen, Kjell; Huse, J.R.; Grytten, Frode

doi:10.1016/j.polymertesting.2017.12.027

Cited by 19 publications

(12 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[ 26‐29 ] The sulfur curing system was selected in this work to achieve better co‐crosslinking network and get better comprehensive properties. [ 30‐35 ]…”

Section: Introductionmentioning

confidence: 99%

Investigation on the mechanical properties and oil resistance of sulfur cured nitrile rubber/hydrogenated nitrile butadiene rubber blends

Zou

Jing

et al. 2021

Polymer Engineering & Sci

View full text Add to dashboard Cite

Nitrile rubber (NBR)/hydrogenated nitrile butadiene rubber (HNBR) blends with various ratios were compounded with internal mixer and two‐roll open mill. Mechanical properties and low‐temperature performance (TR10) of the NBR/HNBR blends after aging under different conditions were investigated. Furthermore, equilibrium swelling test and moving die rheometer (MDR) test were used to systematically investigate the effects of HNBR dosage on the crosslink densities and curing behaviors. Vulcanization torque and crosslink densities decreased with an increase in HNBR content. The crosslink density of pure HNBR is higher than that of pure NBR, which is related to the macromolecular structures of the rubber. Compression sets of the NBR/HNBR vulcanizates were correlated with HNBR dosage indicating a linear relationship. Low‐temperature performance of the NBR/HNBR blends was improved after being aged in the synthetic hydrocarbon hydraulic oils (SH‐1 and SH‐2). This work shows that the low‐temperature performance and oil resistance could be better balanced by blending NBR with HNBR, while the mechanical properties maintain relatively high level.

show abstract

“…[ 26‐29 ] The sulfur curing system was selected in this work to achieve better co‐crosslinking network and get better comprehensive properties. [ 30‐35 ]…”

Section: Introductionmentioning

confidence: 99%

Investigation on the mechanical properties and oil resistance of sulfur cured nitrile rubber/hydrogenated nitrile butadiene rubber blends

Zou

Jing

et al. 2021

Polymer Engineering & Sci

View full text Add to dashboard Cite

show abstract

“…Hydrogenated nitrile rubber (HNBR) is the product of selective hydrogenation of NBR, which retains the original excellent performances of NBR and improves the ability of heat resistance, acid and alkali resistance and aging resistance [ 4 , 5 , 6 , 7 ]. However, HNBR is easy to crystallize due to the nearly ordered polyethylene structure of main chain [ 8 , 9 ], which causes an increase of T g . As a result, HNBR has poor low temperature resistance.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Low Temperature Resistant Hydrogenated Nitrile Rubber Based on Esterification Reaction

Lin

et al. 2021

Polymers

View full text Add to dashboard Cite

Hydrogenated Nitrile Rubber (HNBR) is widely used in aerospace, petroleum exploration and other fields because of its excellent performances. However, there remains a challenge of balancing the oil resistance and the low temperature resistance for HNBR. In this work, a series of grafted carboxyl nitrile rubber (XNBR) was prepared by the esterification reaction between active functional groups (–COOH) of XNBR and alkanols of different molecular chain lengths (C8H17OH, C12H25OH, C16H33OH, C18H37OH) or Methoxypolyethylene glycols (MPEG) of different molecular weights (Mn = 350, 750, 1000). The structure and low temperature resistance of as-obtained grafted polymers were characterized by Fourier Transform Infrared (FTIR), 1H-NMR and Differential scanning calorimetry (DSC). It was found that the glass transition temperatures (Tg) of grafted XNBR were significantly decreased. MPEG grafted polymers with better low temperature resistance were then selected for hydrogenation. As-prepared hydrogenated XNBR grafted with MPEG-1000 (HXNBR-g-1000) showed the lowest Tg of −29.8 °C and the best low temperature resistance. This work provides a novel and simple preparation method for low temperature resistant HNBR, which might be used potentially in extremely cold environments.

show abstract

“…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

Self Cite

View full text Add to dashboard Cite

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.

show abstract

The low temperature crystallization of hydrogenated nitrile butadiene rubber (HNBR)

Cited by 19 publications

References 45 publications

Investigation on the mechanical properties and oil resistance of sulfur cured nitrile rubber/hydrogenated nitrile butadiene rubber blends

Investigation on the mechanical properties and oil resistance of sulfur cured nitrile rubber/hydrogenated nitrile butadiene rubber blends

Synthesis of Low Temperature Resistant Hydrogenated Nitrile Rubber Based on Esterification Reaction

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

Contact Info

Product

Resources

About