Formulation of high-concentration ozone resistant rubber tube

Abstract

The invention relates to a formulation of a high-concentration ozone resistant rubber tube, which comprises the following compositions by mass parts: 100 parts of butyronitrile PVC rubber, 20 to 40 parts of fast extruding furnace black (FEF), 20 to 40 parts of MT-N990, 5 to 15 parts of diphenyl octyl phosphate(DOP), 5 to 15 parts of light magnesium oxide, 4 to 10 parts of zinc oxide ( ZnO ), 1.5 to 3 parts of dibenzothiazyl disulfide, 1.5 to 3 parts of 1, 4-bis(tert-butyl peroxy diisopropyl) benzene, 1.5 to 2.5 parts of trially isocyanurate, 0.2 to 0.4 part of sulfur, 3 to 5 parts of coumarone, 1 to 3 parts of stearic acid, 1 to 2 parts of microcrystalline wax, 1 to 2 parts of N-isopropyl-N'-diphenyl-para-phenylene diamine, and 1 to 2 parts of 2, 2, 4-trimethyl-1, 2-dihyaroquinoline polymer. Compared with the traditional formulation, the formulation of the invention improves the function of high-concentration ozone resistance of butyronitrile PVC rubber and leads the butyronitrile PVC rubber to be suitable to the extrusion processing for producing the rubber tube of fuel tank filler, thereby improving the service life of the rubber tube of an automobile fuel tank filler and better satisfying the requirements of fuel resistance and ozone resistance of the rubber tube of the automobile fuel tank filler.

Description

technical field [0001] The invention relates to the technical field of rubber hoses, in particular to the formula of a nitrile PVC resistant to high-concentration ozone rubber hoses. Background technique [0002] High-concentration ozone-resistant hose mainly refers to the fuel tank filler hose used in automobiles. The hose is made of full rubber extrusion, and the material is nitrile PVC rubber. The ozone-resistant rubber hose of the car works in gasoline or ethanol gasoline medium, and is often placed in the air and exposed to sunlight. Due to the effect of sunlight and ultraviolet rays, the surface of the rubber hose will be cracked, causing the hose to rupture and leak oil and cannot work normally. These are all caused by ozone. According to the characteristics of rubber materials, rubbers that are both oil-resistant and ozone-resistant include fluorine rubber, chlorohydrin rubber, and nitrile PVC rubber. Since the first two rubbers are relatively expensive, nitrile PVC...

AI Technical Summary

Problems solved by technology

At present, a better fuel tank hose used in China can only meet the requirement of 50pphm ozone concentration resistance. With the rapid development of automobiles, the safety and environmental requirements of auto parts are becoming higher and higher. The fuel tank filler of some models The rubber hose must meet the ozone concentration requirement of 200pphm. Therefore, in order to improve the high-concentration ozone resistance of the rubber hose of the fuel tank of the automobile without changing the rubber material, this has become an urgent need to solve in the rubber hose industry, and many people are still studying it. A technical problem that can be effectively solved