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Oil-resistant rubber

A technology of oil-resistant rubber and butadiene rubber, which is applied in the field of oil-resistant rubber, can solve problems such as technical requirements for vulcanized rubber, unclear control methods, unknown strength and elongation of vulcanized rubber, and no clear control direction for the intrinsic properties of raw rubber. , to achieve stable and reliable mechanical properties, improve strength, and improve mechanical properties

Inactive Publication Date: 2016-01-06
江苏人宇石油装备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. The internal properties of the raw rubber are not very clear, especially the strength and elongation of the vulcanized rubber;
[0004] 2. There is no clear control direction for the intrinsic properties of raw rubber;
[0005] 3. The technical requirements and control methods for vulcanized rubber are not clear

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0014] Embodiment: Produce oil-resistant rubber according to the conventional vulcanized rubber production method from the raw material rubber, the raw material rubber is composed of the following components in parts by weight: 85 NBR40 nitrile rubber with Mooney viscosity ≥ 80, 15 MPOL200 butadiene rubber, 8 zinc oxide, Stearic acid 1.5, sulfur 0.5, CZ accelerator 2.0, TMTD accelerator 1.0, slot black 50, DBT dibutyl phthalate 5, vinyl chloride vinyl acetate copolymer resin 15.

[0015] The tensile strength and elongation of the vulcanizates of the above examples are higher than the standard requirements. Petroleum API6A standard requirements: tensile strength ≥ 25Mpa, elongation ≥ 350%; the vulcanizate of this example is under the condition of 150°C*50min: tensile strength ≥ 29.5Mpa, elongation ≥ 440%, compression set ≤11%.

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PUM

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Abstract

The invention discloses oil-resistant rubber which is made of raw material rubber according to a conventional vulcanized rubber production method. The oil-resistant rubber is characterized in that the raw material rubber is prepared from, by weight, 85 parts of NBR40 nitrile rubber, 15 parts of MPOL200 butadiene rubber, 8 parts of zinc oxide, 1.5 parts of stearic acid, 0.5 part of sulfur, 2.0 parts of CZ accelerant, 1.0 part of TMTD accelerant, 50 parts of channel black, 5 parts of DBT dibutyl phthalate and 15 parts of vinyl chloride-vinyl acetate copolymer. According to the oil-resistant rubber, the tensile strength and tear strength of vulcanized rubber are high, the elongation is large, the physical and mechanical properties are stable, the using reliability of a rubber core of a blowout preventer is guaranteed, and the service life is prolonged.

Description

technical field [0001] The invention relates to rubber, in particular to an oil-resistant rubber with high strength, high elongation and low permanent deformation. Background technique [0002] The blowout preventer rubber core is the core component of the drilling blowout preventer. Only when the quality of the rubber core is stable and reliable can the prevention and control effect of blowout prevention be guaranteed. The quality of the rubber core mainly depends on the physical and mechanical properties of the vulcanized rubber. PetroChina's internal control standards have specified various performance indicators. Among the various performance indicators, the two most likely to cause rubber core failure are tensile strength and elongation. According to the working conditions of the 35-35 spherical rubber core, the nominal diameter of the rubber core is ф350mm, while the actual size is ф360mm. The experimental outline of the blowout preventer clearly requires the rubber ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/02C08L9/00C08L27/06C08K13/02C08K5/09C08K3/06C08K3/22C08K3/04C08K5/12
Inventor 薛宏生陈秋湖
Owner 江苏人宇石油装备有限公司
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