Hydrogenated butadiene-acrylonitrile rubber composition material and preparation method and application thereof

Abstract

The invention discloses a hydrogenated butadiene-acrylonitrile rubber composition material, and a preparation method and application thereof. The hydrogenated butadiene-acrylonitrile rubber composition material is prepared from the following raw material components in parts by weight: 100 parts of hydrogenated butadiene-acrylonitrile rubber, 4-10 parts of zinc oxide, 0.5-2.5 parts of stearic acid,1-4 parts of an anti-ageing agent, 20-30 parts of carbon black with a particle size of 26-30 nm, 25-35 parts of carbon black with a particle size of 40-48 nm, 5-15 parts of white carbon black, 5-15 parts of a polyester polyether plasticizer, 2-4 parts of a vulcanizing agent and 1-3 parts of an auxiliary crosslinking agent. The acrylonitrile content of the hydrogenated butadiene-acrylonitrile rubber is 41.3-43.1%, the saturation degree of the hydrogenated butadiene-acrylonitrile rubber is 99% or more, and the Mooney viscosity ML(1+4) at a temperature of 100 DEG C of the hydrogenated butadiene-acrylonitrile rubber is 60-70. The composition material is relatively good in breaking strength, tearing strength and elastic ductility; the composition material has relatively good high-temperature resistance, low-temperature resistance and oil resistance; the composition material has a relatively long service life; and the composition material has excellent performance as an oil-seal material for an engine oil dipstick sleeve of an automobile. The preparation method of the composition material is simple in steps, easy in operation, and suitable for industrial production.

Description

technical field [0001] The invention specifically relates to a hydrogenated nitrile rubber composition material, a preparation method and an application. Background technique [0002] On automobile engines, the oil dipstick is a common control gauge used to check the oil stock in the lubricating hole. The oil dipstick is made of highly elastic metal sheet, and the oil dipstick sleeve is connected to the oil pan (there is a turning path). There is a rubber seal between the oil dipstick and its casing (set on the oil dipstick, hereinafter referred to as "oil dipstick casing oil seal") to seal the engine lubrication system. The oil seal material of the oil dipstick casing must have excellent temperature resistance (working temperature -40~160°C) and excellent oil resistance. The oil dipstick is frequently inserted and inserted during use, and there are strict requirements on sealing, pulling force, and pulling force. Therefore, it is generally required that the oil dipstick o...

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Problems solved by technology

[0004] The actual technical problem to be solved in the present invention is to overcome the poor mechanical properties of the oil dipstick casing oil seal material (such as acrylate rubber) in the prior art, the poor low temperature resistance, and the resistance of ethylene-acrylate rubber to low aniline point oil ( Such as IRM No.903 oil, ASTM No.3 oil) poor resistance to polar oil; and the existing hydrogenated nitrile rubber composition material in the working temperature range of -40 ~ 160 ℃, especially the high temperature end of 160 ℃ With the defects of poor heat resistance and oil resistance, a hydrogenated nitrile rubber composition material, preparation method and application are provided

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