Side rubber of aircraft tire

Abstract

The invention belongs to the field of aircraft tires and particularly relates to side rubber of an aircraft tire. The side rubber is prepared from the ingredients in parts by weight: 30-70 parts of natural glue, 20-40 parts of ethylene propylene terpolymer rubber, 10-30 parts of cis-butadiene rubber, 40-60 parts of modified carbon black N330, 1-3 parts of paraffin oil, 1-3 parts of tackifying resin, 1-4 parts of leveler, 1-2 parts of crack preventing agent, 0.1-0.5 part of antiozonant H, 1-2 parts of p-phenylenediamine type anti-aging agent, 3-8 parts of zinc oxide, 1-4 parts of stearic acid,0.1-1 part of insoluble sulfur, 1-3 parts of vulcanizer DTDM and 1-3 parts of sulfenamide type accelerator DZ. The side rubber of the aircraft tire, disclosed by the invention, can adapt to high-temperature low-temperature diurnal-cycle thermal vacuum environments and harsh working conditions such as radiation and has more excellent property performance, i.e., heat resistance, cold resistance, ozone resistance, radiation resistance, elongation at rupture and flex cracking resistance.

Description

technical field [0001] The invention belongs to the field of aviation tires, in particular to an aviation tire sidewall rubber. Background technique [0002] The sidewall part of an aviation tire is the part with the largest lateral deformation during the use of the aviation tire, such as taxiing, take-off, and landing. Under the harsh service conditions of cyclic thermal vacuum environment and radiation, vulcanized rubber will volatilize the low molecular weight in the polymer and the volatilization of softeners, anti-aging agents and other compounding agents in vacuum, especially in thermal vacuum, due to high temperature and high energy Due to the action of radiation and certain media, chemical reactions may occur in the vulcanizate. And thus produce low-molecular volatiles, these low-molecular volatiles will sublimate under the condition of high vacuum and decompression, and the sublimation and weight loss will further cause changes in the properties of the vulcanized r...

AI Technical Summary

Problems solved by technology

[0002] The sidewall part of an aviation tire is the part with the largest lateral deformation during the use of the aviation tire, such as taxiing, take-off, and landing. Under the harsh service conditions of cyclic thermal vacuum environment and radiation, vulcanized rubber will volatilize the low molecular weight in the polymer and the volatilization of softeners, anti-aging agents and other compounding agents in vacuum, especially in thermal vacuum, due to high temperature and high energy Due to the action of radiation and certain media, chemical reactions may occur in the vulcanizate. And thus produce low-molecular volatiles, these low-molecular volatiles will sublimate under the condition of high vacuum and decompression, and the sublimation and weight loss will further cause changes in the properties of the vulcanized rubber, such as the volatilization of the softener, which will cause Make the vulcanized rubber gradually harden, become brittle, and deteriorate the flexibility at low temperature, resulting in a decrease in the elongation at break of the carcass

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