Anti-aging rubber material and preparation method thereof

Abstract

The invention belongs to the technical field of rubber composite materials, and particularly relates to an anti-aging rubber material and a preparation method thereof. The anti-aging rubber material is prepared from the following components in parts by weight through high-temperature vulcanization: butadiene styrene rubber, butadiene rubber, chlorinated polyethylene, zinc oxide, stearic acid, a flame retardant, a modified reinforcing anti-aging agent, a vulcanizing agent sulfur, an accelerant and a softening agent. The preparation method comprises the following steps: sequentially adding the styrene-butadiene rubber, the butadiene rubber and the chlorinated polyethylene for plastifying and uniform mixing; and sequentially adding the other raw materials, carrying out uniform mixing, and carrying out high-temperature vulcanization. According to the invention, a silane coupling agent is subjected to grafting reaction with an antioxidant and white carbon black at the same time, the micromolecular antioxidant is chemically grafted to the white carbon black through the silane coupling agent, and the silane coupling agent and a rubber chain are cross-linked through high-temperature vulcanization to form a net structure; and thus, the dispersing performance of the white carbon black is improved, and meanwhile, the migration of the anti-aging agent in the rubber is avoided, so the anti-aging performance of the rubber is enhanced.

Description

technical field [0001] The invention belongs to the technical field of rubber composite materials, and in particular relates to an aging-resistant rubber material and a preparation method thereof. Background technique [0002] With the rapid development and wide application of rubber materials, rubber is often in contact with oxygen in the air while being subjected to heat during use. At this time, heat will promote oxidation, while oxygen will promote thermal degradation. Therefore, the use of rubber is trapped in the The aging phenomenon of rubber exposed to natural or extreme environments during transportation and storage and long-term use is manifested in the gradual change of the surface while the physical and mechanical properties of the rubber are greatly reduced and the use value is lost. [0003] At present, in order to suppress or delay the oxidation reaction of rubber, the service life of rubber products is usually extended by adding antioxidants such as amines or...

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Problems solved by technology

[0002] With the rapid development and wide application of rubber materials, rubber is often in contact with oxygen in the air while being subjected to heat during use. At this time, heat will promote oxidation, while oxygen will promote thermal degradation. Therefore, the use of rubber is trapped in the The aging phenomenon of rubber exposed to natural or extreme environments during transportation and storage and long-term use is manifested as the surface gradually changes and the physical and mechanical properties of the rubber are greatly reduced and the use value is lost

[0003] At present, in order to suppress or delay the oxidation reaction of rubber, the service life of rubber products is usually extended by adding antioxidants such as amines or phenols, but since the commonly used rubber antioxidants are usually small molecule antioxidants, they are not compatible with the rubber matrix. It is easy to migrate in the rubber network, which will cause defects in the internal and external structure of the rubber

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