Synthetic rubber formula

Abstract

The invention relates to the field of rubber and in particular relates to a synthetic rubber formula. The synthetic rubber formula comprises the following components in percentage by mass: 20 to 23 percent of chloroprene rubber, 11 to 14 percent of butadiene styrene rubber, 7 to 10 percent of nitrile butadiene rubber, 7 to 10 percent of carbon black, 33 to 36 percent of calcium carbonate, 5 to 8 percent of DOP (Dioctyl Phthalate), 1 to 3 percent of activated magnesium oxide, 0.6 to 1.2 percent of stearic acid, 0.5 to 0.8 percent of an anti-ageing agent 4020, 0.3 to 0.6 percent of microcrystalline paraffin wax, 1.5 to 3 percent of zinc oxide, 0.5 to 1 percent of an accelerant MD, 0.5 to 1 percent of an accelerant TMTD (Tetramethylthiuram Disulfide) and 0.1 to 0.4 percent of S. The syntheticrubber formula provided by the invention has the advantages that the rubber is blended and the performance of the rubber is balanced to obtain synthetic rubber which has excellent comprehensive properties including cold-resisting, oil-resisting, anti-ageing properties and the like.

Description

technical field [0001] The invention relates to the rubber field, in particular to a synthetic rubber formula. Background technique [0002] Rubber refers to a highly elastic polymer material with reversible deformation. It is elastic at room temperature, can produce large deformation under a small external force, and can return to its original shape after the external force is removed. Rubber is a completely amorphous polymer with a low glass transition temperature and often a large molecular weight, greater than hundreds of thousands. [0003] Early rubber was latex taken from plants such as rubber trees and rubber grasses, which were processed into materials with elasticity, insulation, impermeability to water and air. High elastic polymer compound. Divided into two kinds of natural rubber and synthetic rubber. Natural rubber is processed by extracting gum from rubber trees, rubber grass and other plants; synthetic rubber is obtained by polymerization of various monome...

AI Technical Summary

Problems solved by technology

[0004] There are many types of rubber, and each rubber has its own characteristics. Natural rubber has good wear resistance, high elasticity, breaking strength and elongation. It is easy to age in the air and becomes sticky when exposed to heat. It is easy to expand and dissolve in mineral oil or gasoline, and is resistant to alkali but not to strong acid; nitrile rubber has good properties of oil resistance, water resistance, solvent resistance and high pressure oil resistance, but its low temperature performance becomes poor, so it is not suitable for extreme Neoprene has particularly good resistance to atmospheric aging, is not afraid of severe twisting, and has high strength, but it is easy to crystallize and harden at low temperatures, and has poor storage stability; SBR has abrasion resistance, heat resistance, and oil resistance. Its performance and aging resistance are better than natural rubber, and its low temperature performance is good. At the same time, styrene-butadiene rubber is very suitable for use with other rubbers to balance various properties. The disadvantage is that the strength of pure rubber is low.

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