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The nylon cord layer in the NR rubber expansion joint is the key component of its structure.
It plays a crucial role in the overall performance and service life of the product.
The following is a detailed description of the structure of the natural rubber expansion nylon cord layer:
Natural rubber expansion joint is mainly composed of inner rubber layer, nylon cord reinforcement layer,
The middle rubber layer, the outer rubber layer and the reinforced metal ring or steel wire ring at the end are composed.
Among them, the nylon cord reinforcement layer, namely, the nylon cord layer,
It is the skeleton material of the rubber expansion joint,
It has an important influence on the bearing capacity and stability of the product.
Nylon cord layer is composed of multi-layer scraped nylon cord fabric,
These curtains are specially treated,
It has high fracture strength and impact resistance.
They are aligned with the meridian section of the rubber expansion joint,
To withstand the large tangential forces generated during operation.
In order to ensure the stability of the cord, there are several layers outside the nylon cord layer composed of high strength,
A belt layer (also called a tightener) made of a material that is not easy to stretch.
The direction of the cord of the belt layer intersects with the meridian section at a large Angle.
High strength materials such as glass fiber, polyamide fiber or steel wire are selected.
They not only play the role of fixing the cord, but also improve the rigidity of the rubber expansion joint by using the band.
In the manufacturing process of natural rubber expansion joints,
Nylon cord layer after high temperature,
High pressure vulcanization molding, closely combined with the inner, middle and outer rubber layer,
Form a whole. This structure makes the rubber expansion joint have excellent pressure resistance,
Elasticity and displacement compensation capability.
At the same time, the existence of nylon cord layer also improves the wear resistance and service life of the product.
