Rubber sizing material for oil-resistant sealing element and preparation method thereof

A technology for rubber compounds and seals, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of high price, long vulcanization time and low production efficiency of hydrogenated nitrile rubber and chlorohydrin rubber, and achieve air tightness. The effect of good performance, low material cost and high production efficiency

Inactive Publication Date: 2012-07-18
CGP WUHU SEALING
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

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 proc

Method used

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  • Rubber sizing material for oil-resistant sealing element and preparation method thereof

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Embodiment 1

[0016] 1. Raw material preparation:

[0017] NBR3606 80, NBR2707 80, dichloromethylxylene 0.8, magnesium oxide 3.5, 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 rubber compound for the oil-resistant seal comprises the following steps:

[0019] (1) Masticating: Start the internal mixer, put NBR3606 and NBR2707 into the internal mixer for masticating, after 15-25 minutes of masticating, when the temperature reaches 110-120°C, start discharging, and stop to cool after discharging 23-25 ​​hours;

[0020] (2) Mixing: Add the above-mentioned cooled plasticized rubber into the internal mixer, then add magnesium oxide, zinc oxide, zinc stearate, antioxidants, microcrystalline wax, rubber processing aid WB212, and mix After 3-4 minute...

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Abstract

The invention discloses a rubber sizing material for an oil-resistant sealing element. The rubber sizing material comprises the following raw materials in part by weight: 75 to 85 parts of NBR3606 (Nitrile-Butadiene Rubber 3606), 75 to 85 parts of NBR2707, 0.7 to 0.9 part of dichloromethyl dimethylbenzene, 3 to 4 parts of magnesium oxide, 7 to 9 parts of zinc oxide, 1 to 2 parts of zinc stearate,2 to 4 parts of age resister RD, 1 to 2 parts of age resister MB, 1.5 to 1.7 parts of microcrystalline wax, 1.7 to 1.9 parts of rubber processing auxiliary WB212, 95 to 105 parts of carbon black N550, 48 to 52 parts of carbon black N330, 55 to 65 parts of dioctyl-phthalate, 2.3 to 2.5 parts of accelerator DM, 1.5 to 1.7 parts of accelerator TMTD (Tetramethyl Thiuram Disulfide) and 1.5 to 1.7 parts of accelerator TETD (Tetraethylthiuram Disulfide). The formula of the rubber sizing material disclosed by the invention has high curing rate. The obtained sizing material has excellent other comprehensive performances. The oil-resistant sealing element produced from the sizing material has excellent oil resistance and heat resistance and good air-tightness. Meanwhile, the production cost is reduced and the production efficiency is improved.

Description

technical field [0001] The invention relates to the field of processing rubber composite materials, in particular to a 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 researchers. ...

Claims

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Application Information

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IPC IPC(8): C08L9/02C08K13/02C08K3/04C08K5/10C08K3/22C08K5/03C08J3/24C09K3/10
Inventor 邵仁杰
Owner CGP WUHU SEALING
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