Introduction to cord fabric
The cord fabric is made of strong strands, and the medium and fine single yarns are wefted, and the woven fabric is used for the tire. The warp threads are closely arranged, and the weft yarns are arranged sparsely, like a curtain, hence the name.
The cord fabric is used as a skeleton of a rubber product such as a tire to withstand tremendous pressure, impact load, and strong vibration. Cord fabric is an important material that affects tire performance and life. The warp, also known as the cord, is subjected to load and the weft is fixed to the warp position.
The cord has a cotton cord, a viscose cord, a nylon cord, a steel cord, a nylon cord, a polypropylene cord, an aramid cord, a carbon fiber cord, a PEN cord, and the like. The strength of the cotton cord is low, and the manufacture of the tire body requires more layers of cord fabric. In use, the friction heat generated by the movement is high, and the heat dissipation is slow, so the application is gradually reduced. The high-strength adhesive silk cord has the advantages of fatigue resistance, heat resistance, small deformation of the carcass, etc., but since the viscose filament is easy to absorb moisture, the tire needs to be protected in use to make the surface layer intact without cracks, so as to prevent the strength from being lowered by the tide. The nylon cord has high strength, and the carcass has good impact resistance and fatigue resistance, and the tire temperature rises less, but it has the characteristics of heat shrinkage, and the carcass is easily deformed. The carcass made of steel cord has high strength, small rolling loss, good impact resistance and wear resistance, but the rigidity is large, and it is easy to damage the chassis components of the vehicle. In addition, there are polyester cords, glass fiber cords, and the like. In the 1970s, aramid cords (see aramid fibers) appeared, which have the advantages of high strength, high modulus, high temperature resistance and dimensional stability. They are suitable for tires with high performance requirements such as engineering vehicles and airplanes. In addition, there are carbon fiber cord fabrics, and pen fibers are also a trend in the future.