High strength rubber with radiation resistance and thermal aging resistance and preparation method thereof

Abstract

The invention discloses high strength rubber with both the radiation resistance and the thermal aging resistance, which comprises the following components in parts by weight: 100 parts of crude rubber, 1 to 50 parts of rare earth salt, 10 to 100 parts of reinforcing agent and 0 to 20 parts of other ingredients. The high strength rubber with both the radiation resistance and the thermal aging resistance of the invention has strong environmental adaptability, has tensile strength of over 16MPa and tearing strength of over 40KN / m after being irradiated under the condition of 300KGy, can be used for producing various rubber products with various radiation resistance properties, which comprise a rubber gasket, a seal part, a shock absorbing and buffering part, a spacer bush, a diaphragm and the like, can be widely applied to the environment with high energy radiation in various fields of aerospace, nuclear industry, electronic communication, chemical industry, medicine, watercraft and the like, and has good economic benefits and popularization value.

Description

technical field [0001] The invention relates to a novel rubber and a preparation process thereof, in particular to a high-strength rubber having both radiation resistance and heat aging resistance and a preparation method thereof, belonging to the technical field of rubber production. Background technique [0002] At present, my country's aerospace, atomic energy industry and military fields are developing rapidly. In these fields, a large number of rubber materials are used, such as: various sealing materials used in the supporting equipment of atomic reactors and aerospace equipment exposed to space radiation. pieces etc. Under normal circumstances, the existing rubber is exposed to high-energy radiation, which will cause a series of chemical changes such as chain scission or cross-linking reactions in the rubber macromolecules, and the structure and composition of the material will be destroyed, resulting in serious degradation and failure of the material. Recently, with ...

AI Technical Summary

Problems solved by technology

But the rare earth oxides in this process are simply physical blending

The consequence of this is that when the amount added reaches a certain value, the radiation performance reaches a stable extreme value, so its radiation resistance is limited.

If you continue to add fillers, the radiation resistance cannot be improved, and at the same time, it will cause serious phase separation, resulting in a serious decline in the mechanical properties of the rubber.

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