Results 201 to 210 of about 16,654 (244)

Advances in Nitrile Rubber Technology

Rubber Chemistry and Technology, 1978
Abstract Considerable advances have been made in NBR technology and still more are possible. The heat resistance of NBR has been raised so that it will with-stand 150°C in air for short periods, instead of 120°C. There is potential in the polymer backbone for still greater stability. It has been demonstrated that the ozone resistance of NBR can
J. R. Dunn, D. C. Coulthard, H. A. Pfisterer   +2 more
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Durability studies of aluminium/ aluminium joints bonded by chlorobutyl rubber-carboxylated nitrile rubber and epichlorohydrin rubber-carboxylated nitrile rubber blends

International Journal of Adhesion and Adhesives, 1992
Abstract Two novel rubber blends based on chlorobutyl rubber ( ciir )-carboxylate nitrile rubber ( xnbr ) and epichlorohydrin rubber (ECO)-carboxylated nitrile rubber ( xnbr ) can be used as adhesives for aluminium/aluminium bonding. Incorporation of silica filler in the ciir-xnbr blend and carbon black in the eco-xnbr blend improves joint ...
T. Bhattacharya, T.B. Ghosh, S.K. De
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A study on the characteristics of a rubber blend of fluorocarbon rubber and hydrogenated nitrile rubber

Journal of Industrial and Engineering Chemistry, 2013
Abstract In this study, the physical and chemical characteristics of a rubber blend of fluorocarbon rubber (FKM) and hydrogenated Nitrile Butadiene rubber (HNBR) were investigated based on the blend ratio for the purpose improving thermal resistance of HNBR and the low-temperature resistance of FKM.
Youn-Gu Yeo, Hyun-Ho Park, Chang-Seop Lee   +2 more
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Phenolic–nitrile rubber copolymers

Journal of Applied Polymer Science, 1961
Nitrile rubbers have often been used together with phenolic resins in molding materials to produce an impactresistant product. These mechanical mixtures may react during final cure. Acrylonitrile–butadiene rubbers containing residual unsaturation can, however, be coreacted with phenolic resins during the early stages of polymerization if appropriate ...
G. R. Sprengling, E. J. Traynor
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Devulcanization of nitrile butadiene rubber in nitrobenzene

Journal of Applied Polymer Science, 2004
AbstractSulfur‐crosslinked nitrile butadiene rubber (s‐NBR) was found to be devulcanized when it was heated with nitrobenzene at 200°C for 3 h. The tetrahydrofuran (THF)‐soluble fraction from s‐NBR heated with nitrobenzene was purified by reprecipitation with THF/n‐hexane, chloroform/n‐hexane, and THF/n‐hexane systems and was then characterized by ...
Kohji Masaki, Shin‐Ichi Ohkawara, Tomohiro Hirano, Makiko Seno, Tsuneyuki Sato   +4 more
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Polyblends of the Carboxylated Nitrile Rubber and Fluoroelastomers

International Journal of Polymeric Materials, 1995
Abstract The blends of carboxylated nitrile rubber with two different grades of fluoroelastomers (Viton) has been studied using different blending techniques, but keeping all other parameters constant. The preblending technique gives better results because of the interpolymer reaction between XNBR and Viton.
S. K. Singha Roy, C. K. Das
openaire   +1 more source

Nitrile Rubber Functionalized for Silica Reinforcement

Rubber Chemistry and Technology, 1979
Abstract 1. Conventional silica-reinforced NBR vulcanizates are characterized by stiffness at low elongation and low modulus at high elongations. These properties are associated with reticulate structure formation of silica particles, which occurs rapidly when compounds are heated to curing temperatures. 2.
D. C. Edwards, K. Sato
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Vulcanization and properties of hydrogenated nitrile rubber/nitrile rubber blends

The HNBR/NBR blends were prepared at ratios of 100/0, 90/10, 80/20 and 70/30 (wt%). The compounds by using a two-roll mixing mill at various ratios filled with two types of carbon black loading, GPF N-660 and SRF N-774 (fixed at 50 phr) were cured by three vulcanization systems: conventional vulcanization, efficient vulcanization and peroxide ...
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Modelling the permeability of nitrile rubber

2016
Elastomer seals are widely used in the oil and gas industry and form small but crucial parts of critical mechanical and electronic components. Ideally, to prevent damage to such components, the seals should act as impermeable barriers. However, under the high pressures and temperatures found downhole, they are liable to suffer two main types of ...
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Hybrid reinforcement in nitrile rubber composites

Macromolecular Symposia, 2001
Nitril rubber -PVC composites having carbon black and mica fillers in different compositions as hybrid reinforcements have been studied. The degree of replacement on static-dynamic mechanical, swelling behavior of resultant composites were all discussed.
N. Nugay, B. Erman
openaire   +1 more source