Nuclear-radiation-resistant ageing-resistant rubber

Abstract

The invention provides a nuclear-radiation-resistant ageing-resistant rubber and relates to a rubber material which can be used in the environments of gamma, beta and X rays and various charged particle lines. The rubber is high in strength and stable in processing property, and can resist heat and radiation. The rubber comprises the following components in parts by weight: 100 parts of ethylene propylene diene monomer rubber, 5-25 parts of bismuth oxide serving as a radiation-resistant auxiliary agent, 30-60 parts of high-wear-resistance carbon black serving as a reinforcing agent, 2-4 parts of 4,4'-diisopropyl diphenylamine and 1-3 parts of p-benzoquinone dioxime serving as thermal oxidative ageing resistant auxiliary agents, 1-5 parts of dicumyl peroxide serving as a vulcanizer, 4-8 parts of paraffin oil serving as a plasticizer and 1-6 parts of processing aid. The nuclear-radiation-resistant ageing-resistant rubber provided by the invention can meet production of membranes in a nuclear power station, a radioactive medical treatment department and the like; by using the rubber, the phenomena such as minute bubbles, air clog and the like can be reduced; and bismuth oxide in the rubber not only has the effect of radiation protection but also has an activation effect, so that a finished product can maintain extremely high fatigue-resisting strength for a long term in the radioactive environment and can be used for effectively preventing radioactive rays from penetrating. The rubber has the characteristics of high strength, yielding resistance, good hot tearing resistant property and large temperature application range.

Description

technical field [0001] The present invention relates to a rubber material used in γ, β, X-ray, and various charged particle beam environments; especially relates to a new rubber material that can maintain high strength and shield radiation in the aforementioned environment for a long time formula. Background technique [0002] The wall thickness of the rubber diaphragm is relatively thin, and the cloth is sandwiched in the middle. It can be seen from the data books that the anti-γ-ray dose of the rubber used in the general rubber diaphragm is lower than that of EPDM rubber, so EPDM rubber is a good radiation-resistant rubber material. However, if EPDM rubber is vulcanized with peroxide, its flex resistance, hot tear performance and self-strength are very poor; if it is vulcanized with sulfur, it is very easy to bloom. Using other rubber materials, its radiation resistance and aging resistance are far from enough, and it is easy to produce appearance after vulcanization, su...

AI Technical Summary

Problems solved by technology

However, if EPDM rubber is vulcanized with peroxide, its flex resistance, hot tear performance and self-strength are very poor; if it is vulcanized with sulfur, it is very easy to bloom

Using other rubber materials, its radiation resistance and aging resistance are far from enough, and it is easy to produce appearance after vulcanization, such as small bubbles, nests, etc., resulting in waste products and increasing production costs.