Cold-resistant rubber

Abstract

The invention belongs to the rubber field, and particularly relates to cold-resistant rubber. The cold-resistant rubber comprises the components in parts by weight as follows: 50-150 parts of epichlorohydrin rubber, 50-120 parts of natural rubber, 30-70 parts of silicone rubber, 20-60 parts of polyurethane rubber, 10-40 parts of ethylene propylene rubber, 10-30 parts of carbon black N100, 2-8 parts of pottery clay, 2-10 parts of sulfur, 1-5 parts of an aging-resistant agent, 1-10 parts of pottery clay, 1-5 parts of aromatic oil, 1-10 parts of white carbon black, 1-5 parts of an anti-scorching agent, 1-4 parts of nano-zinc oxide, 1-4 parts of zinc diethyldithiocarbamate, 1-4 parts of 2-imidazolidinethione, 1-10 parts of a plasticizer and 4-12 parts of a softening agent. The cold-resistant rubber has the benefits as follows: compared with common rubber, the cold-resistant rubber has good cold-resistant performance and is suitable for continuous persistent use at the low temperature, and meanwhile, the rubber further has the advantages of high tensile strength, fire resistance, corrosion resistance and the like.

Description

technical field [0001] The invention belongs to the technical field of rubber materials, and in particular relates to a cold-resistant rubber with good cold resistance. 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. First, the rubber content can be appropriately increased. Under the same vulcanization conditions, the combined rubber content is relatively reduced, thus improving the cold resistance. Second, the selection and use of plasticizers and oils. Plasticizers facilitate the move...

AI Technical Summary

Problems solved by technology

This phenomenon shows that by exposing the rubber to an appropriate temperature, part of the irregular molecular structure inside the rubber will be rearranged, resulting in an increase in modulus, expansion of permanent deformation, and a decrease in the elasticity of the rubber over time. slowly lost