Nitrile rubber composite capable of improving mechanical property

A technology of nitrile-butadiene rubber and composition is applied in the field of polymer material preparation, which can solve the problems of inability to rebound in place, easy aging of rubber, unstable tensile strength and elongation at break, etc., and achieve the effect of good mechanical properties

Inactive Publication Date: 2014-01-15
HEBEI BOLU TIANBAO PETROLEUM EQUIP MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the technical problems that the rubber used in the rubber core of the existing blowout preventer is easy to age, cannot rebound in place, and the tensile strength and elongation at break are unstable, resulting in poor sealing effect of the rubber core, a rubber core with improved mechanical properties is designed. A nitrile rubber composition, which can be used to obtain a nitrile rubber composition with better mechanical properties, and can be used for blowout preventer rubber sealing products

Method used

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  • Nitrile rubber composite capable of improving mechanical property
  • Nitrile rubber composite capable of improving mechanical property
  • Nitrile rubber composite capable of improving mechanical property

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Embodiment Construction

[0022] A nitrile rubber composition with improved mechanical properties. The composition uses nitrile rubber as the main material and 100 parts by weight of nitrile rubber. The composition includes:

[0023] Nitrile rubber 100 parts,

[0024] Accelerator 1-5 parts,

[0025] Anti-aging agent 1-3 parts,

[0026] 8-10 parts of nano zinc oxide powder,

[0027] 0.5-1.5 parts of crosslinking agent,

[0028] Reinforcing filler 30-60 parts,

[0029] 5-10 parts of inorganic filler,

[0030] T-ZnOw four-needle zinc oxide whiskers 0.5-10 parts,

[0031] 0.2-5 parts of coupling agent,

[0032] 5-15 parts of magnesium methacrylate,

[0033] 1-10 parts of polyester staple fiber.

[0034] The composition of the nitrile rubber includes 35-41% acrylonitrile by weight, and the Mooney viscosity is 50-56 (ML 1+4 100°C).

[0035] The models of the nitrile rubber are N220S, N230S and N240S.

[0036] The accelerator is one or a mixture of two or more of TMTD, CZ, and M.

[0037] The antioxidant is one or a mixture of ...

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Abstract

The invention discloses a nitrile rubber composite capable of improving mechanical property. With the adoption of the composite, the nitrile rubber composite with better mechanical property can be obtained, and can be used for a blowout preventer rubber seal product. The composite adopts the technical scheme that the composite takes nitrile rubber as a main material. The composite adopts a T-ZnOw tetrapod-like zinc oxide whisker and utilizes high strength and high modulus of a complete structure of the composite to improve a high molecule; a three-dimensional crystal form structure of the composite is dispersed in a matrix, so that a skeleton effect is exerted; a unique three-dimensional space structure allows a gripping force between the composite and the matrix to be greater, so that an improvement effect is more significant, and the tensile strength is improved significantly; and transverse and longitudinal tensile strength values are basically same, so that the mechanical property of a matrix material is improved isotropically, and the strength and the processability of the matrix are improved significantly.

Description

Technical field [0001] The invention relates to the preparation of polymer materials, and relates to a nitrile rubber composition for oil well sealing. This composition can be used to prepare non-metallic rubber sealing products for blowout preventer sealing. Background technique [0002] In the construction of oil and natural gas drilling, in order to safely drill through high-pressure oil and gas formations and avoid the occurrence of out-of-control drilling blowout accidents, it is necessary to install blowout preventers on the wellhead of the drilling. When the pressure in the wellbore is less than the formation pressure, the oil, gas, and water in the downhole stratum enter the wellbore and form overflow or surge. In severe cases, drilling blowout and fire accidents may occur. The function of the blowout preventer is to close the wellhead quickly and in time when there is overflow or surge in the well to prevent blowout accidents. In recent years, as the country has con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/02C08L67/00C08K13/04C08K7/08C08K3/22C08K5/098
Inventor 段伟克付兴旺
Owner HEBEI BOLU TIANBAO PETROLEUM EQUIP MFG CO LTD
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