Rubber hose inner rubber layer for ethanol resistant gasoline oiling machine and preparation method of rubber hose inner rubber layer

Abstract

The invention relates to the field of rubber hose preparation, in particular to a rubber hose inner rubber layer for ethanol resistant gasoline oiling machine and a preparation method of the rubber hose inner rubber layer. The rubber hose inner rubber layer is prepared from the following raw materials in parts by weight: 60-76 parts of nitrile rubber, 24-35 parts of chlorosulfonated polyethylene rubber, 8-13 parts of a homogenizer, 2.7-4.2 parts of zinc oxide, 1.1-1.8 parts of stearic acid, and 2-4 parts of an anti-aging agent, 8.9-10 parts of carbon black, 7-12 parts of white carbon black, 17-25 parts of silica micro powder, 8-13 parts of light calcium carbonate, 7-12 parts of dioctyl ester, 1.2-1.7 parts of sulfur, 0.6-1.1 parts of an accelerant, 0.8-1.3 parts of a vulcanization accelerant and 4.6-7.3 parts of an adhesive. The rubber hose inner rubber layer has good vapor oil resistance and ethanol resistance.

Description

technical field [0001] The invention relates to the field of rubber hose preparation, in particular to an inner rubber layer of a rubber hose for an ethanol-resistant gasoline fuel dispenser and a preparation method thereof. Background technique [0002] Currently, gasoline for vehicles on the market generally uses gasoline with 10% to 20% ethanol added. Gasoline added with ethanol has been widely used as automobile fuel because of its good antiknock performance, high oxygen content, ability to improve the quality of automobile exhaust emissions, and the sustainable regeneration of ethanol. But as we all know, although ethanol is an excellent fuel, it is also an excellent solvent. It is easy to corrode, soften, swell or crack rubber parts and synthetic non-metallic materials. The inner rubber layer of the traditional rubber hose for fuel dispensers is generally made of nitrile rubber composite material. It basically does not have any problems in transporting traditional eth...

AI Technical Summary

Problems solved by technology

The preparation method is simple, the operation is easy, and the equipment investment is small; the filling reinforcing agent is fast pressing furnace black, high wear-resistant furnace black, semi-reinforcing furnace black and medium particle thermal cracking carbon black, white carbon black, clay, One or two or more of calcium carbonate are used in combination; the vulcanization system is accelerator NA-22, tetramethylthiuram disulfide TMTD, sulfenamide, 2,4,6-trithiol thiotriazine One or more of them are used in combination; the protection system is one or more of anti-aging agent MBI, anti-aging agent RD, anti-aging agent D, and anti-aging agent NBC; the activator is zinc oxide, trilead tetraoxide, and magnesium oxide One or two or more of them are used in combination; the plasticizer is one or two of dibutyl phthalate DBP, dioctyl phthalate DOP, dioctyl sebacate DOS, tricresyl phosphate TCP More than one kind are used in combination; the epichlorohydrin rubber is a ternary copolymerized polychloroether rubber, which is expensive and cannot be popularized on fuel dispenser pipes; the epichlorohydrin rubber molecules contain a large amount of oxygen atoms, which are flammable and easy to burn. High requirements for flame retardancy; epichlorohydrin rubber has poor processing technology and is easy to scorch, so it is suitable for molded products, while rubber hoses are extruded products. Therefore, the products obtained by the technical solution disclosed in this patent application cannot be used for fuel dispensers Inner rubber layer with rubber hose

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