High-damping rubber material and preparation method thereof

Abstract

The invention discloses a high-damping rubber material. The high-damping rubber material is mainly prepared from raw materials in parts by mass as follows: 100 parts of rubber, 1-4 parts of sulfur, 3-8 parts of an anti-aging agent, 3-10 parts of zinc oxide, 1-5 parts of stearic acid, 20-75 parts of polar filler, 5-20 parts of a plasticizer, 1-3 parts of an accelerant CZ, 0.2-2 parts of an anti-reversion agent and 10-50 parts of hindered phenol and / or hindered amine; the rubber is polar rubber or combination of polar rubber and non-polar rubber; when the rubber is the combination of polar rubber and non-polar rubber, not less than 20 parts by mass of the polar rubber is utilized; the polar filler is lignin fiber and / or white carbon black. The preparation method comprises steps as follows: all the raw materials except sulfur and the accelerant are subjected to high-temperature mixing and cooling, and masterbatch is obtained; sulfur and the accelerant are added to the masterbatch for mixing, still standing and vulcanization, and the high-damping rubber material is obtained. The high-damping rubber material is excellent in heat stability, and thermal-oxidation acceleration based aging proves that no micromolecules are separated out, and long-term use requirement can be met.

Description

technical field [0001] The invention belongs to the field of rubber materials, and in particular relates to a high-damping rubber with good performance stability during long-term use and a preparation method thereof. Background technique [0002] With the development of modern science and technology and the continuous improvement of human living standards, people have put forward higher requirements for the comfort of working and living environments. Therefore, how to effectively control various types of vibration and noise pollution has become an important concern of scientists. one of the subjects. Due to its unique viscoelastic properties, rubber has a good damping effect, and has been widely used for shock and noise reduction in rail transit, construction, machinery and other fields. [0003] Rubber-plastic blending is a common method to improve damping. For example, CN201410128421 patent discloses a high-damping rubber bearing and its preparation method. The molding p...

AI Technical Summary

Problems solved by technology

[0005] In order to improve this technical problem, at present, it is basically improved from the synthesis of hindered phenol with macromolecular chains, which improves the problem that hindered phenol is easy to precipitate in high damping rubber. It solves the problem of single damping stability and cannot be comprehensively improved.

In the long-term use of high-damping rubber, not only will the molecular chain be broken due to the action of thermal oxygen, but also the problem of hindered phenol and operational oil precipitation will occur. This technical problem needs to be comprehensively improved.

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