Oil-resisting heat-resisting seal piece size and preparation method thereof

A seal and heat-resistant technology, applied in the field of rubber composite material processing, can solve the problems of high price, low production efficiency and long vulcanization time of hydrogenated nitrile rubber and chlorohydrin rubber, and achieve other good comprehensive performance and high production efficiency , The effect of low material cost

Active Publication Date: 2013-11-06
CGP WUHU SEALING
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  • Abstract
  • Description
  • Claims
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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 proc

Method used

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  • Oil-resisting heat-resisting seal piece size and preparation method thereof

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Embodiment 1

[0016] 1. Raw material preparation:

[0017] NBR3606 80, NBR2707 80, sulfur 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 N550100, Carbon black N330 50, dioctyl ester 60, accelerator DM2.4, accelerator TMTD 1.6, accelerator TETD1.6.

[0018] 2. A method for preparing an oil-resistant and heat-resistant seal material, comprising 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 minutes, add carbon ...

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Abstract

The invention discloses an oil-resisting heat-resisting seal piece size and a preparation method thereof. The oil-resisting heat-resisting seal piece size comprises the following raw material components in parts by weight: 75-85 of NBR (nitrile-butadiene rubber) 3606, 75-85 of NBR 2707, 0.7-0.9 of sulphur, 3-4 of magnesium oxide, 7-9 of zinc oxide, 1-2 of zinc stearate, 2-4 of antiager RD, 1-2 of antiager MB, 1.5-1.7 of microcrystal wax, 1.7-1.9 of rubber processing agent WB, 95-105 of carbon black N550, 48-52 of carbon black N330, 55-65 of dioctyl ester, 2.3-2.5 of accelerating agent DM, 1.5-1.7 of accelerating agent TMTD (tetramethyl thiuram disulfide) and 1.5-1.7 of accelerating agent TETD (tetraethylthiuram disulfide). The rubber size formula disclosed by the invention is rapid in vulcanizing speed; the obtained size is good in other comprehensive performances; and an oil-resisting seal piece produced by using the size is good in oil resistance and heat resistance and good in gas tightness, and simultaneously, production cost is reduced, and production efficiency is improved.

Description

technical field [0001] The invention relates to the field of processing rubber composite materials, in particular to an oil-resistant and heat-resistant rubber material for sealing parts 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 prod...

Claims

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Application Information

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IPC IPC(8): C08L9/02C08K13/02C08K3/06C08K3/22C08K5/098C08K3/04C08K5/10B29B7/28B29B7/72
Inventor 邵仁杰
Owner CGP WUHU SEALING
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