High-strength cold-resistant rubber

Abstract

The invention discloses a high-strength cold-resistant rubber which is characterized by comprising the following components in parts by weight: 100 parts of nitrile-butadiene rubber, 12 parts of natural rubber, 8 parts of melamine resin, 5 parts of polyvinyl chloride, 33 parts of carbon black, 4 parts of pine tar, 9 parts of bamboo fiber, 2.4 parts of anti-aging agent AW, 3 parts of vulcanizing agent, 0.2 part of accelerator, 5.5 parts of plasticizer, 3.7 parts of softening agent and 4 parts of stearic acid. By adding the bamboo fiber, the obtained rubber has the advantages of high strength and tear resistance; and the high-strength cold-resistant rubber can be used at low temperature for a long time, basically has the same physiochemical properties as normal temperature, and prolongs the service life of the rubber product.

Description

technical field [0001] The invention belongs to the field of rubber, in particular to a high-strength cold-resistant rubber. Background technique [0002] The cold resistance of rubber, that is, the ability to maintain its elasticity and normal work at a specified low temperature, the cold resistance of rubber mainly depends on two basic properties of high polymers, glass transition and crystallization, both of which will make rubber loss of elasticity. The cold resistance of rubber is mainly reflected in the strong movement ability of the molecular chain, the relatively easy movement between molecules, and the relatively low energy of molecular aggregation. The rubber content can be appropriately increased. Under the condition of constant vulcanization conditions, the combined rubber content is relatively reduced, thus improving the cold resistance; the selection and use of plasticizers and oils, plasticizers can make the molecular movement of rubber easy. [0003] In th...

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Problems solved by technology

[0003] In the prior art, rubber generally used at low temperature requires other properties besides low temperature performance, such as oil resistance, medium resistance, high strength and other properties. Therefore, the selection of rubber with good cold resistance alone often cannot meet actual needs. , then it is necessary to consider the combination of two or more rubbers