Rubber torsional vibration damper with anti-static function

Abstract

The invention discloses a rubber torsional vibration damper with an anti-static function. The rubber torsional vibration damper comprises an inner wheel, an outer wheel and a rubber layer arranged between the inner wheel and the outer wheel. The rubber torsional vibration damper is characterized in that the rubber layer comprises, by mass, 100 parts of nitrile rubber, 5 parts of zinc oxide, 2 parts of stearic acid, 1.5 parts of dibenzothiazyl disulfide, 2 parts of ketoamine anti-aging agents, 8-13 parts of acetylene black and dibutyl ester, and the dosage of the dibutyl ester is 40% of the amount of the acetylene black. The rubber torsional vibration damper has the advantages that the rubber layer adopts nitrile rubber as a base material, the acetylene black with a specific content is filled, so that the volume resistance Rv is improved and reaches between 2.0*10<8>omega.cm and 5.8*10<3>omega.cm; and meanwhile, good mechanical properties are obtained, the tensile strength is increased and reaches 21.7 MPa to the maximum extent, and the anti-static and damping effects of the rubber torsional vibration damper can be met.

Description

technical field [0001] The invention relates to a rubber torsional vibration damper, in particular to a rubber torsional vibration damper with antistatic function. Background technique [0002] In the small and medium power engines of modern automobiles, rubber torsional vibration dampers are often installed at the front end of the crankshaft with the largest torsional amplitude. Its function is to reduce the torsional vibration of the shaft system when the engine is running, so as to reduce vibration and noise and prevent the crankshaft from breaking. , to improve the comfort and safety of drivers and passengers; the second is to drive the pulley for the front-end attachment of the engine to ensure the normal operation of the car. [0003] Such as figure 1 As shown, the rubber torsional vibration damper is usually composed of an inner wheel 1, a vulcanized rubber layer 2 and an outer wheel 3, the inner wheel 1 is connected to the crankshaft of the engine, the outer wheel 3...

AI Technical Summary

Problems solved by technology

[0005] However, in the commonly used rubber torsional vibration damper, since there is an insulating rubber layer between the outer wheel and the inner wheel, even if the inner wheel is grounded at this time, when the V-shaped rubber belt rubs against the insulated outer wheel, the two are charged with static electricity, such as Figure 5 shown

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