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Sizing material for floating oil seal and preparation method thereof
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A floating oil seal and rubber technology, applied in the field of oil seal rubber, can solve the problems of poor low temperature performance of rubber, seal failure, damage and deformation, etc., and achieve the effect of excellent performance, stable operation and simple control
Active Publication Date: 2020-06-30
青岛高特佳橡塑研究院有限公司 +1
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Abstract
Description
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Problems solved by technology
[0003] At present, the environmental hydraulic oil and mud in contact with the floating oil seal of downhole tools are extremely harsh, and the materials are required to be resistant to high and low temperature, corrosion resistance, and good pressure change performance. Especially in winter, if the low temperature performance of the material is not good, in In the environment of -40~-50℃, it will harden and lose its elasticity, which will cause the seal to fail
The existing rubber materials have poor low-temperature performance, relatively large pressure change, and tend to be hard and brittle in winter, and the deformation is large, resulting in damage and deformation and failure
Method used
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Embodiment 1
[0027] A rubber compound for a floating oil seal, comprising 80 parts of hydrogenated nitrile rubber, 1 part of zincoxide, 20 parts of carbon black, 1 part of anti-aging agent 445, 2 parts of TP759, 5 parts of VC-40CC, TAIC ( The abbreviation of triallyl isocyanate) 2.5 parts, RICO153 3 parts.
[0028] Adopt following table method to prepare mixed rubber:
[0029] Table 1
[0030] operating procedures It takes time, min Cumulative time, min 1. Use a 20L internal mixer with a rotor speed of 32r / min 0 0 2. Hydrogenated nitrilepolymer 2 2 3. Add zincoxide, carbon black, TP759 10 12 4. Add VC-40CC, TAIC, RICON 153 1 13 5. Glue removal and cooling
[0031] The mixing time of the internal mixer is generally between 8 and 15 minutes. In order to make the dispersion good, the mixing time needs to be a little longer. In the production and processing, the rubber mixer can be divided into the following two methods:
[0032] (1) ...
Embodiment 2
[0037] A rubber compound for floating oil seals, including 120 parts of hydrogenated nitrile rubber, 8 parts of zinc oxide, 55 parts of carbon black, 3 parts of anti-aging agent 445, 15 parts of TP759, 10 parts of VC-40CC, 4 parts of TAIC in parts by weight parts, RICO 153 10 parts.
[0038] Adopt following table method to prepare mixed rubber:
[0039] Table 2
[0040] operating procedures It takes time, min Cumulative time, min 1. Use a 20L internal mixer with a rotor speed of 32r / min 0 0 2. Hydrogenated nitrile polymer 2 2 3. Add zinc oxide, carbon black, TP759 10 12 4. Add VC-40CC, TAIC, RICON 153 1 13 5. Glue removal and cooling
Embodiment 3
[0042] A rubber compound for floating oil seals, comprising 100 parts of hydrogenated nitrile rubber, 5 parts of zinc oxide, 45 parts of carbon black, 1.5 parts of anti-aging agent 445, 5 parts of TP759, 8 parts of VC-40CC, and 3 parts of TAIC in parts by weight copies, RICO 153 8 copies.
[0043] Adopt following table method to prepare mixed rubber:
[0044] table 3
[0045]
[0046]
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Abstract
The invention discloses a sizing material for floating oil seal and a preparation method thereof. The invention belongs to the technical field of oil seal sizing materials. The sizing material is prepared from the following components in parts by weight: 80 to 120 parts of hydrogenated butadiene-acrylonitrile rubber, 1 to 8 parts of zincoxide, 20 to 55 parts of carbon black, 1 to 3 parts of an anti-aging agent 445, 2 to 15 parts of TP759, 5 to 10 parts of VC-40CC, 2.5 to 4 parts of TAIC and 3 to 10 parts of RICO 153. The sizing material for the floating oil seal has the advantages of excellent performance, high tensile strength, high temperature aging resistance and excellent low temperature resistance, so that the product can keep excellent performance in a use environment with extremelyhigh rotating speed, and the use requirements of the product can be greatly met.
Description
technical field [0001] The invention belongs to the technical field of oil seal sizing materials, and relates to a sizing material for floating oil seals used in oil field downhole tools and a preparation method thereof, in particular to a sizing material for oil seals and a preparation method thereof. Background technique [0002] Floating oil seals are often used in planetary reducers in the walking part of construction machinery to dynamically seal the end faces of the components. Due to its high reliability, it has also been used as a dynamic seal for oil field downhole tools in recent years. This type of seal is a mechanical seal, generally composed of a floating ring made of iron alloy and an O-ring made of nitrile rubber, fluorine rubber and other materials. Floating rings are used in pairs, one rotates with the rotating part and the other is relatively stationary. The sealing principle of the floating oil seal is: the two floating rings are deformed by the axial co...
Claims
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Application Information
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