Flexible rubber covering member for steel rail waist and preparation method thereof

Abstract

The invention relates to a flexible rubber covering member for a steel rail waist and a preparation method thereof. The flexible rubber covering member comprises, by weight, 1 to 10% of natural rubber, 60 to 75% of reclaimed rubber, 15 to 28% of a filling material, 0.5 to 5% of an activator, 0.5 to 5% of a softener, 0.02 to 0.1% of a promoter and 0.5 to 4% of a vulcanizing agent. The rubber covering member manufactured in the invention has better physical properties and substantial vibration damping and noise reduction effect, and is simple in formula and low in cost.

Description

technical field [0001] The invention relates to the technical field of rail vibration and noise reduction, in particular to a rail waist flexible rubber covering and a preparation method thereof. Background technique [0002] With the improvement of living standards, people have higher and higher requirements for the operating comfort of railcars, especially those operating in cities, such as urban subways. Low noise will minimize the impact on residents. Therefore, the track flexible wrapping comes into being. This kind of wrapping usually includes the sheath at the bottom of the track (rail bottom sheath) and the track waist wrapping (rail waist cladding), among which the rail waist cladding is a key component to reduce vibration and noise during rail operation. [0003] Rail waist cladding is usually made of damping materials such as rubber materials through special processes. In order to ensure that the product has good elasticity and obvious viscoelastic hysteresis eff...

AI Technical Summary

Problems solved by technology

[0003] Rail waist cladding is usually made of damping materials such as rubber materials through special processes. In order to ensure that the product has good elasticity and obvious viscoelastic hysteresis effect, the existing technology usually needs to use a large amount of natural rubber or synthetic rubber (such as Butadiene rubber, isoprene rubber, butadiene rubber, etc.), and in order to ensure the vibration damping performance and prolong the service life, it is usually necessary to add a large amount of additives such as anti-aging agent, coupling agent, plasticizer, cross-linking agent, foaming agent etc., the formula is complex, the production process is cumbersome, and the cost is extremely high. At the same time, the products prepared by the existing technology still have a lot of room for improvement in terms of vibration reduction, noise reduction, load capacity, and service life.

Images