A kind of high-performance hydrogenated nitrile rubber compound and preparation method thereof

Abstract

The invention relates to a high-performance hydrogenated nitrile rubber compound and a preparation method thereof. The base material of the high-performance hydrogenated nitrile butadiene rubber compound is composed of high-saturation hydrogenated nitrile butadiene rubber, carboxyl hydrogenated nitrile butadiene rubber and multifunctional epoxy resin , Hydrogenated nitrile rubber is cross-linked under the action of organic peroxide, and the carboxyl hydrogenated nitrile rubber and multifunctional epoxy resin will also produce self-crosslinking, thus forming a diversified polymer crosslinking system To meet the characteristics of oil resistance, heat resistance, hydrogen sulfide resistance, high hardness and good compression resistance required by oil field rubber sealing products. At the same time, the liquefied multi-functional epoxy resin acts as a reactive temporary plasticizer for rubber, which makes the rubber compound have a lower Mooney viscosity, which can improve the mixing, molding and vulcanization performance of the rubber compound . During preparation, the traditional mixing process technology can be used, and an open mixer or an internal mixer can be used for mixing, and it can be adapted to the molding or injection vulcanization molding process. Compared with the prior art, the rubber compound involved in the technology of the present invention has excellent performance, simple and convenient preparation method, low cost and can realize industrialized production.

Description

technical field [0001] The invention relates to a high-performance hydrogenated nitrile-butadiene rubber compound and a preparation method thereof. In particular, the high-performance hydrogenated nitrile-butadiene rubber compound can be kneaded by using a traditional mixing technology, using an open mill or an internal mixer, and Suitable for molding or injection molding vulcanization process. Background technique [0002] Due to years of exploitation of underground crude oil, most oil wells have become low-permeability or ultra-low-permeability oil wells, making it more and more difficult to exploit. Offshore oil exploitation has also begun to shift from shallow sea areas to deep seas, and the depth of oil wells is developing towards deep and ultra-deep wells. Ultra-deep wells are characterized by high temperature and pressure. Generally, the bottom hole temperature of a 5000m deep well will exceed 150°C, and the bottom hole pressure may reach more than 50MPa. The working...

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Problems solved by technology

[0003] As an oilfield downhole rubber sealing product, especially the packer rubber sleeve is the core component of the packer used in the oilfield layered production operation, its performance requirements are extremely demanding. Therefore, many researchers are trying to improve and enhance the oilfield downhole The properties of hydrogenated nitrile rubber materials, such as: using in-situ unsaturated carboxylate to strengthen hydrogenated nitrile rubber [in-situ synthesis of zinc methacrylate to strengthen hydrogenated nitrile rubber, Synthetic Rubber Industry, 2005, 28(3): 205 -210], compound hydrogenated nitrile rubber with aramid short fiber / pulp or phenolic resin, and some people even think of compounding the latest nanomaterials such as carbon nanotubes or graphene with hydrogenated nitrile rubber [invention patent, hydrogenation Nitrile rubber and para-aramid fiber composite material and its preparation method, 200410062207.8; invention patent, an ultra-high pressure acid-resistant rubber sealing material for oil fields and its preparation method, 201310134896.5; invention patent, a hydrogenated nitrile rubber / carbon nanotube Composite materials and their preparation methods, 20120208196.4; Invention patent, a high-strength, high-pressure, high-pressure, hydrogen sulfide and corrosion-resistant hydrogenated nitrile rubber vulcanizate, 201410391897.5], although these research works have obvious effects on improving the mechanical properties of hydrogenated nitrile rubber However, the actual application of oil field downhole rubber sealing products may still need to be improved in industrial production, and the performance is not perfect, such as: resin reinforcement, unsaturated carboxylate reinforcement and aramid fiber reinforced rubber materials. Compression permanent deformation is not ideal

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