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Nitrile-butadiene rubber material for oil-proof sealing element and preparation method thereof

A technology for nitrile rubber and seals, which is applied in the field of nitrile rubber materials for oil-resistant seals and its preparation, can solve the problems of expensive hydrogenated nitrile rubber and chlorohydrin rubber, long vulcanization time, and low production efficiency. Good tightness, low material cost and high production efficiency

Active Publication Date: 2013-10-23
CGP WUHU SEALING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The usual 41 nitrile rubber formula is inferior to hydrogenated nitrile rubber and chlorohydrin rubber in terms of oil resistance, heat resistance and air tightness, but hydrogenated nitrile rubber and chlorohydrin rubber are expensive, and the vulcanization time is long during processing, and the production efficiency is low and the cost is high. , how to increase the vulcanization speed and improve production efficiency without reducing other comprehensive properties of rubber materials provides a new research direction for rubber production and researchers

Method used

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  • Nitrile-butadiene rubber material for oil-proof sealing element and preparation method thereof

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Embodiment 1

[0016] 1. Raw material preparation:

[0017] Nitrile rubber 3445 80, nitrile rubber 3470 80, dichloromethylxylene 0.8, zinc oxide 8, zinc stearate 1.5, antioxidant RD 3, antioxidant MB 1.5, microcrystalline wax 1.6, rubber processing aid WB212 1.8, carbon black N550 100, carbon black N330 50, dioctyl ester 60, accelerator DM2.4, accelerator TMTD 1.6, accelerator TETD 1.6.

[0018] 2. The preparation method of the nitrile rubber compound of the oil-resistant seal, comprising the following steps:

[0019] (1) Mastication: Start the internal mixer, put nitrile rubber 3445 and nitrile rubber 3470 into the internal mixer for plastication, after 15-25 minutes of plastication, when the temperature reaches 110-120°C, start discharging, Stop and cool for 23-25 ​​hours after discharge;

[0020] (2) Mixing: Add the above-mentioned cooled plastic rubber into the internal mixer, then add zinc oxide, zinc stearate, anti-aging agents, microcrystalline wax, rubber processing aid WB212, and ...

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Abstract

The invention discloses a nitrile-butadiene rubber material for an oil-proof sealing element, which comprises the following raw materials in parts by weight: 75-85 parts of nitrile-butadiene rubber 3445, 75-85 parts of nitrile-butadiene rubber 3470, 0.7-0.9 part of di(chloromethyl)-xylene, 7-9 parts of zinc oxide, 1-2 parts of zinc stearate, 2-4 parts of antioxidant RD, 1-2 parts of antioxidant MB, 1.5-1.7 parts of microcrystalline wax, 1.7-1.9 parts of rubber processing assistant WB2121, 95-105 parts of carbon black N55095, 48-52 parts of carbon black N33048, 55-65 parts of dioctyl ester, 2.3-2.5 parts of accelerator DM, 1.5-1.7 accelerator TMTD, and 1.5-1.7 parts of accelerator TETD. The rubber material disclosed by the invention has rapid curing speed and good other overall properties. The oil-proof sealing element produced from the rubber material has good oil resistance and heat resistance and good air tightness, and at the same time, reduces production cost and improves production efficiency.

Description

technical field [0001] The invention relates to the field of processing rubber composite materials, in particular to a nitrile rubber compound for an oil-resistant seal and a preparation method thereof. Background technique [0002] Oil-resistant seals have special requirements for the formulation of rubber materials, and the products are required to have high oil resistance, high weather resistance, and high air tightness. The usual 41 nitrile rubber formula is inferior to hydrogenated nitrile rubber and chlorohydrin rubber in terms of oil resistance, heat resistance and air tightness, but hydrogenated nitrile rubber and chlorohydrin rubber are expensive, and the vulcanization time is long during processing, and the production efficiency is low and the cost is high. , How to increase the vulcanization speed and improve production efficiency without reducing other comprehensive properties of rubber materials provides a new research direction for rubber production and researc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L9/02C08K13/02C08K5/03C08K3/22C08K5/098C08K3/04C08K5/10B29B7/28B29B7/72
Inventor 邵仁杰
Owner CGP WUHU SEALING